WO2011061791A1 - 眼内レンズ挿入器具 - Google Patents
眼内レンズ挿入器具 Download PDFInfo
- Publication number
- WO2011061791A1 WO2011061791A1 PCT/JP2009/006173 JP2009006173W WO2011061791A1 WO 2011061791 A1 WO2011061791 A1 WO 2011061791A1 JP 2009006173 W JP2009006173 W JP 2009006173W WO 2011061791 A1 WO2011061791 A1 WO 2011061791A1
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- WO
- WIPO (PCT)
- Prior art keywords
- intraocular lens
- optical
- stage
- deformed
- support
- Prior art date
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- 238000003780 insertion Methods 0.000 title claims abstract description 98
- 230000037431 insertion Effects 0.000 title claims abstract description 98
- 230000003287 optical effect Effects 0.000 claims abstract description 148
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1662—Instruments for inserting intraocular lenses into the eye
- A61F2/167—Instruments for inserting intraocular lenses into the eye with pushable plungers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2/1662—Instruments for inserting intraocular lenses into the eye
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/14—Eye parts, e.g. lenses or corneal implants; Artificial eyes
- A61F2/16—Intraocular lenses
- A61F2002/1681—Intraocular lenses having supporting structure for lens, e.g. haptics
- A61F2002/16905—Having means on lens to reduce overall dimension of lens for insertion into small incision
Definitions
- the present invention relates to an intraocular lens insertion device used for inserting an intraocular lens into an eye.
- the intraocular lens to be substituted for the lens
- the method of inserting in the eye from the incision wound and placing in the capsule is adopted.
- an intraocular lens insertion instrument as described in Patent Document 1 (Japanese Patent Laid-Open No. 2003-70829) or Patent Document 2 (Japanese Patent Laid-Open No. 2004-351196) is used.
- the insertion tube portion provided at the tip of the instrument body is adapted to be inserted into the eye through the incisional wound of the eye, and the intraocular lens is slightly deformed in the instrument body In the state, it is pushed out from the tip opening of the insertion tube into the eye. Then, the intraocular lens pushed into the eye is disposed in the capsule by expanding in the capsule by its own restoring force.
- the incisional wound can be kept small, and it is possible to reduce the time and labor required for the operation, and also to reduce the risk of occurrence of post-operative astigmatism and infection.
- the intraocular lens is inserted by moving the intraocular lens set on the stage provided on the instrument main body toward the insertion tube by the pushing member. It is pushed into the eye from the distal end opening of the tube portion.
- the intraocular lens is generally set on the stage in a state in which a pair of support portions protruding from the optical portion extend forward and backward in the moving direction of the intraocular lens by the push-out member. is there.
- the pushing member comes in contact with the supporting portion (rear supporting portion) extending backward in the moving direction of the intraocular lens, and the force exerted from the pushing member The entire intraocular lens moves toward the insertion tube by being transmitted to the optical unit through the rear support.
- the rear supporting part may come off the pressing surface (tip end face) of the pushing member. Further, it is difficult for the practitioner to know whether or not the rear support portion has been removed from the pressing surface of the pushing member. Therefore, by continuously pressing the pressing member as it is, the rear support portion which is separated from the pressing surface of the pushing member gradually decreases in the forward direction of the pushing between the inner peripheral surface of the insertion tube and the outer peripheral surface of the pushing member. It will be caught. There is a possibility that the rear support portion may be damaged by the pinching, and the pushing operation resistance of the pushing member may be increased, which may affect the treatment of the intraocular lens.
- JP 2009-18009 A Patent Document 3
- a groove opened on the outer peripheral surface is formed at the tip end portion of the plunger (pushing member), and the groove supporting the rear support portion deviated from the tip end surface of the plunger
- An intraocular lens insertion device of a structure to be accommodated inside has been proposed.
- the rear support portion removed from the groove formed on the outer peripheral surface of the plunger wraps around the outer peripheral surface of the plunger, it immediately enters and is sandwiched between the outer peripheral surface of the plunger and the inner peripheral surface of the insertion cylinder. The problem was that it was not satisfactory.
- An object of the present invention is to provide an intraocular lens insertion device with a novel structure capable of avoiding problems such as damage to the support portion due to the support portion being pinched between the push-out member and the device body.
- a substantially cylindrical device body in which an intraocular lens having a pair of support portions projecting and formed in an optical portion is inserted from the rear in the axial direction with respect to the device body. And a push-out member to be assembled to the device body, and an axially intermediate portion of the device body is provided with a stage on which the intraocular lens is set, and is axially distal to the stage A tapered insertion tube is formed, and the intraocular lens set on the stage is moved forward by the push member in the axial direction of the device body to be slightly deformed through the insertion tube.
- the intraocular lens insertion device In the intraocular lens insertion device to be inserted into the eye by pushing out, the intraocular lens is set on the stage with the pair of support portions extending in the axial direction of the device body from the optical portion.
- the optical portion is deformed into a curved shape that is convex toward the outer peripheral side of the insertion cylinder by being moved forward in the axial direction of the device body by the pushing member.
- the optical part On the end face of the push-out member pushing the intraocular lens, the optical part is bent and deformed so as to be convexed by being engaged with the support part extending rearward in the axial direction of the instrument body from the optical part. It is characterized in that an engaging portion for suppressing the displacement of the supporting portion is provided.
- the supporting part with which the distal end surface of the pushing member abuts that is, the supporting part extending rearward in the axial direction of the instrument body from the optical part
- the supporting part Is curved in the approaching direction with respect to the optical part in a state in which the displacement of the curved optical part to the convex side is restricted by the engaging part provided on the tip end face of the extrusion member.
- the rear support can be accommodated by utilizing the gap formed on the concave side of the optical unit, and the rear supporting part is the pushing member and the instrument It is possible to avoid the problem of being damaged by being pinched between the main body.
- a second aspect of the present invention is the intraocular lens insertion device according to the first aspect, wherein the intraocular lens is moved toward the axial direction front of the device body by the pushing member. Is deformed into a curved shape that is convex toward the upper or lower side of the stage, and with the intraocular lens set on the stage, the optical portion from the optical unit to the axial direction of the instrument body
- a pressing portion is provided for pressing the support portion extending rearward to the opposite side to the upper or lower side of the stage where the optical portion is bent and deformed to be convex, and a pressing portion is provided to deform and displace the optical portion
- the back support portion of the intraocular lens set on the stage is in advance relative to the optical portion on the superposition surface side of the optical portion It is possible to press and displace so as to As a result, the rear support portion can be more reliably and smoothly inserted into the gap formed on the concave side of the curved and deformed optical portion as the intraocular lens is pushed out.
- the press part as described in this aspect may be provided in an instrument main body, and may be comprised with another member assembled
- a separate member assembled to the instrument body for example, if it is a preset type intraocular lens insertion instrument provided with the intraocular lens set in advance on the stage, it is assembled to the instrument body It is possible to form a projecting pressing portion for pressing the supporting portion against the supporting member by using the supporting member provided with the protrusion for positioning and supporting the inner lens.
- a third aspect of the present invention is the intraocular lens insertion device according to the first or second aspect, wherein the intraocular lens is moved toward the axial front of the device body by the pushing member. Accordingly, the optical unit is deformed into a curved shape that is convex toward the upper or lower side of the stage, and the optical unit is curved and deformed to be convex at the tip end surface of the extrusion member One side of the upper and lower sides of the stage protrudes in the axial direction more than the other side to form a step surface, and the support portion is engaged with the step surface to displace the support portion.
- the projecting portion of the tip surface of the push-out member advances so as to overlap without hitting the back support.
- the non-projecting portion of the tip surface of the pusher member begins to hit and push against the rear support.
- the floating of the rear support portion (displacement of the curved optical portion to the convex side) is restricted by the locking action of the pushing member on the step surface.
- the intraocular lens set on the stage includes the pair of the intraocular lens relative to the optical unit.
- the support part is a one-piece structure integrally molded.
- the present invention is also applicable to an insertion device for an intraocular lens such as a three-piece structure in which a supporting portion formed separately from the optical portion is post-fixed to the optical portion.
- the present invention is preferably applied to an intraocular lens insertion device used to insert an intraocular lens having a one-piece structure, as in this embodiment.
- the intraocular lens having a one-piece structure since the support is formed of the same soft material as the optical portion, the intraocular lens of the three-piece structure is often formed of a material harder than the optical portion. Therefore, the rigidity of the support portion is low, and the cross-sectional area of the support portion is also large.
- the intraocular lens when the intraocular lens is pushed out by the pushing member, it is necessary to secure a large space for releasing the support portion so as not to be pinched between the instrument body and the pushing member. Therefore, the space formed inside the curved and deformed optical part is carefully utilized to secure a space for releasing the support part. Thereby, even if it is an intraocular lens of a one-piece structure, when pushing out through an insertion cylinder part, pinching of the support part between the outer peripheral surface of an extrusion member and the inner peripheral surface of an insertion cylinder part is prevented, It is possible to effectively protect the department.
- a fifth aspect of the present invention is the intraocular lens insertion device according to any one of the first to fourth aspects, wherein in the device body, a ridge line or a valley line extending the optical unit in its moving direction
- a deformation guide means is provided for folding and deforming in a chevron or valley shape which is convex on either of the upper and lower sides of the stage.
- a curved shape that is convex in the target direction can be more stably provided to the optical portion of the intraocular lens.
- a gap can be more stably formed on the concave side of the curved optical unit, and the rear support can be more reliably inserted into the gap. It becomes possible.
- the deformation guide means interferes with the intraocular lens to be moved in the insertion tube portion to cause the insertion in the insertion tube portion And a deformation guide portion that gradually deforms the optical portion of the intraocular lens with the movement of the lens.
- the optical part does not need to be bent and deformed in advance, and the optical part needs to be bent and deformed at one time by a special operation on the stage Nor.
- the special operation for bending the optical part is not necessary.
- the optical part can be curved and pushed out. As a result, the task of setting and pushing the intraocular lens on the stage is facilitated.
- the intraocular lens may be provided in a state of being set in advance on the stage, or an intraocular lens may be provided separately from the intraocular lens insertion device so that the intraocular lens is set on the stage during the operation. It is good.
- the rear support portion approaches the optical portion in a state in which the displacement of the rear support portion on the convex side of the optical portion to be curved and deformed is regulated by the engagement portion provided on the tip end surface of the extrusion member. It is bent and deformed in the direction Thereby, the rear support portion can be smoothly fitted into the gap formed on the concave side of the curved and deformed optical portion.
- the rear support is damaged by being pinched between the outer peripheral surface of the push-out member and the inner peripheral surface of the insertion tube, etc. It is possible to avoid the problem of
- FIG. 1 is a plan view of an intraocular lens insertion device according to a first embodiment of the present invention.
- the side view of the intraocular lens insertion instrument shown in FIG. The top view which shows the intraocular lens set to the instrument main body of the intraocular lens insertion instrument shown in FIG.
- the side view of the intraocular lens shown in FIG. The plane explanatory drawing which shows the nozzle part provided in the instrument main body of the intraocular lens insertion instrument shown in FIG.
- FIG. 6 is a cross-sectional view taken along line A-A to C-C in FIG. 5.
- FIG. 9 is a side view of the pushing member shown in FIG. 8;
- FIG. 9 is an enlarged plan view showing a tip portion of the pushing member shown in FIG. 8;
- FIG. 9 is an enlarged side view showing a tip portion of the pushing member shown in FIG. 8;
- Cross-sectional explanatory drawing corresponded in the XIV-XIV cross section in FIG.
- FIG. 6A is a cross-sectional view for explaining another aspect of the deformation guide means that can be adopted in the present invention, and is a cross-sectional view taken along line A-A to C-C in FIG. 5; Sectional explanatory drawing for demonstrating the aspect of the press part in the case of employ
- adopted by this embodiment The side view for demonstrating the other aspect of the guide surface which can be employ
- FIG. 1 and 2 show an intraocular lens insertion device 10 according to a first embodiment of the present invention.
- the intraocular lens insertion device 10 has a structure in which a push-out member 16 is inserted and assembled to a substantially cylindrical device main body 14 in which an intraocular lens 12 described later is set.
- the left direction in FIG. 1 is taken as the front in the axial direction of the intraocular lens insertion device 10
- the right direction in FIG. 1 is taken as the rear in the axial direction.
- the up-down direction of FIG. 2 while making the up-down direction of FIG. 2 into a height direction, let the up-down direction of FIG. 1 be a width direction.
- the intraocular lens 12 is a conventionally known intraocular lens 12, and as shown in FIGS. 3 and 4, a pair of supporting portions 20 a and 20 b are integrated with the optical portion 18. It has a one-piece structure.
- the intraocular lens 12 may have a three-piece structure in which a support portion separately formed from the optical portion is post-fixed to the optical portion.
- the optical unit 18 provides optical characteristics, and in the illustrated case, the optical unit front surface 22 located on the cornea side in the capsular bag and the optical unit rear surface 24 located on the vitreous body are mutually placed in the lens capsule. It is formed with different curvatures.
- the pair of support portions 20 a and 20 b protrudes from the outer peripheral portion opposite to each other in the radial direction of the optical portion 18 toward the outer peripheral side which is substantially opposite to each other with the optical portion 18 interposed therebetween. Further, the protruding tip portions of the pair of support portions 20 a and 20 b are curved and extended in the same direction in the circumferential direction of the optical portion 18.
- the instrument body 14 in which such an intraocular lens 12 is set is formed of a hard synthetic resin material having optical transparency, and a central hole 26 extending in an axial direction with a substantially rectangular cross section is formed.
- a main body tubular portion 28 is provided.
- a stage 30 is provided axially forward of the main body cylindrical portion 28.
- a concave groove 32 which opens upward and extends in the axial direction is formed in the stage 30 in communication with the central hole 26 of the main body cylindrical portion 28. That is, the stage 30 has a shape in which one long side portion in the cross section of the main body cylindrical portion 28 is removed, and is shaped so as to extend axially forward.
- the bottom surface of the concave groove 32 is a lens mounting surface 34, and the lens mounting surface 34 is a flat surface which spreads with a width slightly larger than the outer diameter of the optical portion 18 of the intraocular lens 12. It is assumed.
- the length dimension (the dimension in the axial direction) of the lens mounting surface 34 is slightly larger than the maximum length dimension (the dimension in the horizontal direction in FIG.
- the intraocular lens 12 is placed flat in a free state in the substantially central portion of the lens mounting surface 34 without hitting the both side walls of the concave groove 32.
- the support units 20a and 20b hit the both side walls of the concave groove 32 and the rotation is blocked.
- the carrier member 36 is detachably mounted on the stage 30 from the outer peripheral surface opposite to the lens mounting surface 34.
- the carrier member 36 includes a base plate portion 38 (see FIG. 14) superimposed on the outer surface of the bottom wall portion of the concave groove 32 forming the lens mounting surface 34.
- the base plate portion 38 has a concave groove.
- a plurality of action projections 40a, 40a, 40b and 40b are formed to project on the surface of the base plate 32 on the bottom wall.
- the base plate portion 38 is integrally formed with an operation piece 42 which extends outward and extends outward as opposed to the surface of the concave groove 32 on the bottom wall portion.
- the carrier member 36 is assembled to the main body cylindrical portion 28 such that the base plate portion 38 is superimposed on the bottom wall portion of the concave groove 32 of the stage 30 from the outside. Further, a plurality of through holes 44a, 44a, 44b, 44b are formed in the bottom wall portion of the stage 30 to which the support member 36 is assembled. Then, the plurality of action projections 40a, 40a, 40b, 40b provided on the support member 36 assembled to the main body cylindrical portion 28 pass through the through holes 44a, 44a, 44b, 44b to form the bottom wall of the stage 30. It is projected on the inner surface of the part.
- the number, shape, and formation position of the action protrusions 40 are not particularly limited.
- the intraocular lens 12 is lifted and supported in a floating state from the bottom wall portion of the stage 30, or the intraocular lens 12 may be set as appropriate to position the stage 12 in the stage 30 or to prevent displacement of the push member 16 relative to the main cylinder 28 in the pushing direction.
- the positions and the shapes of the plurality of through holes 44 in the stage 30 are set corresponding to the positions and the shapes of the plurality of action protrusions 40.
- each action projection 40a is positioned by interposing the support portions 20a and 20b from both sides in the circumferential direction of the optical portion 18 with two positioning projections provided on the projecting tip end face thereof, thereby positioning the intraocular lens 12 It is supposed to
- the carrier member 36 is attached to the instrument body 14.
- the action projection 40 may be pressed into the through hole 44 to use the frictional force between the two.
- a lid 48 connected to the stage 30 by a hinge 46 is provided on one side in the width direction of the stage 30 (upper side in FIG. 1). It is possible to do it.
- the lid 48 is provided with a pair of left and right guiding plate portions 50, 50 which project toward the lens mounting surface 34 and extend in the axial direction in a state in which the upper opening of the concave groove 32 is covered.
- a central guide plate 52 extending in the same direction as the left and right guide plates 50, 50 between the pair of left and right guide plates 50, 50 and extending parallel to the left and right guide plates 50, 50 on the lid 48. Is provided.
- the lid 48 is provided with two pressing portions 54 projecting toward the lens mounting surface 34 in a state where the lid 48 is closed.
- These two pressing parts 54, 54 are respectively projections formed integrally with the lid 48, and their shapes and sizes are the same.
- Each of the two pressing portions 54, 54 has a cylindrical shape, and the projecting tip end surface thereof is a flat surface extending in parallel with the lens mounting surface 34 when the lid 48 is closed.
- the protruding tip surfaces of the two pressing portions 54, 54 are at the same height position.
- the outer diameter dimension of the two pressing portions 54, 54 is larger than the width dimension of the support portion 20b.
- the two pressing portions 54, 54 are provided at positions in contact with the support portion 20b positioned rearward in the movement direction of the intraocular lens 12 in a state in which the lid 48 is closed. Particularly in the present embodiment, the two pressing portions 54, 54 are provided to abut on the support portion 20b at a position where the contact position of the push-out member 16 in the support portion 20b is sandwiched in the groove width direction of the concave groove 32. .
- the two pressing portions 54, 54 face the supporting portion 20b of the intraocular lens 12 placed flat on the lens mounting surface 34 in the free state to the lens mounting surface 34. Press.
- the support part 20b is deformed to the lens mounting surface 34 side with respect to the optical part 18 compared with the case of a free state. That is, the support portion 20 b is displaced in the direction approaching the lens mounting surface 34 by being pushed by the two pressing portions 54, 54 as compared with the case of the free state.
- the shape and size of the pressing portion 54, the formation position, the number of arrangement, and the like are not limited to the illustrated embodiment.
- one pressing portion 54 may be formed only on one side in the groove width direction of the concave groove 32 than the contact position of the extrusion member 16 in the support portion 20b, or one pressing on only the other side in the groove width direction.
- the part 54 may be formed.
- the pressing portion 54 makes surface contact with the support portion 20b from the viewpoint of securing a pressing area with respect to the support portion 20b or the like, the surface contact is not necessarily required.
- the pressing portion 54 has a conical shape, a hemispherical shape, a shape such as a gable roof, a tapered shape such as a roving roof, etc., and the pressing portion 54 makes point contact or line contact with the support portion 20b. You may
- each pressing part 54 When a plurality of pressing parts 54 are provided, the shape and size of each pressing part 54 are set in consideration of the contact position to the support part 20 b and the like, and may be the same as each other. It may be different. When the projecting heights of the plurality of pressing portions 54 are the same as each other, the supporting portions 20 b pressed toward the lens mounting surface 34 by the plurality of pressing portions 54 can be made horizontal. As a result, the support portion 20b can be easily inserted below the step surface 86 as described later.
- the pressing portion 54 does not have to be integrally formed on the lid 48. It is of course also possible to fix the pressing portion 54 separately formed from the lid 48 to the lid 48 later.
- a nozzle portion 56 as an insertion tube portion is provided axially forward of the stage 30 in the instrument body 14.
- the nozzle portion 56 has a proximal end 58, an intermediate portion 60, and a distal end 62 in this order from the stage 30 side, and as a whole goes from the proximal end to the distal end It has a tapered outer shape.
- the proximal end 58 and the distal end 62 extend straight in the axial direction with a substantially constant cross-sectional shape.
- the middle portion 60 is a tapered cross-sectional gradual reduction portion whose cross-sectional shape gradually decreases as going axially forward.
- a through hole 64 extending over the entire length in the axial direction is formed in the nozzle portion 56 in communication with the concave groove 32, and the width dimension of the proximal end opening 66 of the through hole 64 is the groove of the concave groove 32.
- the size is substantially the same as the width dimension (the width dimension of the lens mounting surface 34).
- the through hole 64 has a crescent-shaped or gauze-shaped opening cross section at the proximal end opening 66, but gradually deforms as it goes to the distal end opening 68 into a substantially oval opening cross section.
- the through holes 64 of the nozzle portion 56 have the width direction in the vertical direction in FIG. 5 same as the width direction of the stage 30, and the height direction in the vertical direction in FIG.
- the cross-sectional shape is wide and horizontal.
- the flatness (flatness) of the proximal end opening 66 is larger than that of the distal end opening 68 and gradually changes in the middle portion 60.
- a bottom surface 70 continuous with no step from the lens mounting surface 34 and a top surface 72 located above the bottom surface 70 are formed.
- the bottom surface 70 is formed with an inclined surface 74 which gradually rises in the axial forward direction so as to extend over the base end portion 58 and the middle portion 60.
- both axial direction side portions sandwiching the inclined surface 74 are flat surfaces.
- the top surface 72 is a flat surface having no step over the entire length in the axial direction.
- a pair of guide rails 76, 76 projecting toward the top surface 72 is formed at a widthwise central portion of the bottom surface 70 of the base end portion 58.
- the guide rails 76, 76 are axially linearly extending projections over a predetermined dimension, and the tip portion (axial front end) of the guide rails 76, 76 is the tip (axial forward end) of the inclined surface 74. Located in).
- the tip end portions of the guide rails 76, 76 are gradually drawn up to the bottom surface 70 as they go to the tip by being gradually rising as the inclined surface 74 goes forward in the axial direction, and the same height as the bottom surface 70. It is in position.
- the rear end portions of the guide rails 76 extend beyond the rear end of the proximal end portion 58 to the lens mounting surface 34.
- Such guide rails 76, 76 are formed substantially in parallel with each other at a predetermined distance in the width direction across the center of the bottom surface 70 in the width direction.
- the side rail 78 is a protrusion extending linearly in the axial direction over a predetermined dimension, and the tip end portion (axial front end portion) of the side rail 78 is substantially in the same axial direction as the tip end portion of the guide rails 76, 76.
- the tip end portion of the side rail 78 is made equal to the inner surface of the nozzle portion 56 so as to be gradually sucked into the inner surface of the nozzle portion 56 as it goes to the tip (axially forward).
- the rear end portion of the side rail 78 is located at the proximal end opening 66 which is the rear end of the proximal end 58.
- Such side rails 78 are formed substantially parallel to each other.
- the pushing member 16 is inserted into the center hole 26 from the axial direction rear of the instrument body 14 and assembled to the instrument body 14. As shown in FIGS. 8 and 9, the push-out member 16 has a substantially rod shape, and the action portion 80 located on the front side in the axial direction and the back side in the axial direction with respect to the action portion 80 The insertion portion 82 is provided.
- the action portion 80 is in the form of a rod extending straight in the axial direction with a constant cross-sectional shape of a substantially oval shape, and its distal end portion 84 is, as shown enlarged in FIGS. 10 and 11, from the proximal end portion Also, the dimension in the width direction (vertical direction in FIG. 11) is reduced.
- a step surface 86 as an engaging portion is formed in the tip end portion 84 so as to extend in the axial direction over a predetermined length.
- the tip end portion 84 has the projecting end surface 88 formed on the upper side in the height direction (the opening side of the recessed groove 32) across the step surface 86, and the lower side in the height direction (the bottom side of the recessed groove 32). That is, the pressing surface 90 is formed on the lens mounting surface 34 side).
- the protruding end surface 88 is located axially forward of the pushing member 16 with respect to the pressing surface 90.
- the axial dimension (depth dimension) of the step surface 86 is not particularly limited as long as it can be engaged with the support portion 20b, but is larger than half of the width dimension of the support portion 20b. Is desirable. As a result, it is possible to stably hold down the support 20b by the step surface 86 as described later.
- the dimension in the height direction of the pressing surface 90 is not particularly limited as long as it can be engaged with the support portion 20b, but is larger than the height dimension (thickness dimension) of the support portion 20b. Is desirable. Thereby, the pressing of the supporting portion 20b by the pressing surface 90 as described later can be stably realized.
- thin plate-like reinforcing ribs 92 are provided on both sides in the width direction of the action part 80, and the strength of the action part 80 is secured.
- the insertion portion 82 as a whole has a H-shaped cross section and a straight rod shape, and a pressure plate 94 for applying a pressing force when pushing the pushing member 16 spreads in a direction perpendicular to the axis at the rear end. It is integrally formed.
- Such an extrusion member 16 is assembled to the instrument main body 14 by being inserted into the main body cylindrical portion 28 from the action portion 80 side. Thereby, the intraocular lens insertion device 10 is obtained.
- the locking claw 96 provided in the insertion portion 82 is locked in the locking hole 98 formed in the main body cylindrical portion 28, whereby The initial position of the pushing member 16 is set.
- the push-out member 16 can not be pulled out of the main body cylindrical portion 28 by the locking action of the locking claw 96 in the locking hole 98, and a predetermined resistance in the pushing direction into the main body cylindrical portion 28. It is supposed that it is displaceable.
- the intraocular lens 12 is set in the intraocular lens insertion device 10 in which the pushing member 16 is assembled at the initial position with respect to the device body 14 as described above.
- the intraocular lens 12 is accommodated in the concave groove 32 of the stage 30 in which the lid 48 is opened and opened in the instrument body 14.
- An inner lens 12 is disposed on the stage 30.
- the intraocular lens 12 is accommodated in the concave groove 32 with the optical part rear surface 24 facing downward, and is positioned by the action projections 40 a and 40 a of the carrier member 36 assembled to the stage 30. Is set. Under this condition, the central portion of the optical back surface 24 of the intraocular lens 12 is placed in contact with the guide rails 76, 76.
- the proximal end portions of the support portions 20a and 20b of the intraocular lens 12 are placed on the upper end surfaces of the two action protrusions 40a and 40a, and the substantially entire intraocular lens 12 is a concave groove 32. It may be lifted from the bottom surface of the lens and set in such a state that the action of the contact stress on the bottom surface on the optical section 18 is avoided as much as possible.
- the intraocular lens 12 positioned by the two action projections 40a and 40a is held in a free state in which the action stress and strain on the optical unit 18 are reduced, and the pair of support portions 20a and 20b is a device body It extends toward both axial directions (front and rear direction) of the reference numeral 14.
- the support portion 20b located axially rearward of the optical portion 18 is located slightly apart from the projecting end surface 88 of the extrusion member 16 at the initial position in the forward direction of the extrusion direction.
- the support surface 20b is pressed toward the lens mounting surface 34 by overlapping the step surface 86 provided on the tip end portion 84 of the push-out member 16 from the upper side with respect to the support portion 20b, and the support surface 20b is used as a lens It may be displaced toward the mounting surface 34. In this case, the lid 48 need not have the pressing portion 54.
- the lid 48 is closed, whereby the upper opening of the concave groove 32 is covered with the lid 48.
- the intraocular lens 12 is set in the state of being accommodated in the instrument body 14.
- the lid 48 is closed, the engagement piece 100 provided on the lid 48 is engaged with the engagement notch 102 provided on the stage 30, and the lid 48 is maintained in the closed state. .
- one pressing portion 54 is on the proximal side of the contact position of the pushing member 16 in the support portion 20 b and acts The other pressing portion 54 is in contact with the extension end side of the support portion 20b with respect to the contact position of the push-out member 16 while being in contact with the extension end side with respect to the positioning position by the portion 40a.
- the contact portion of the push member 16 in the support portion 20 b is located lower than the stepped surface 86 formed on the push member 16 in the height direction.
- the pushing member 16 may be inserted into the instrument body 14 and set at the initial position before the intraocular lens 12 is accommodated in the concave groove 32 of the stage 30, but the intraocular lens 12 may be concave groove 32.
- the pushing member 16 may be inserted into the instrument body 14 after being accommodated therein or after the lid 48 is closed.
- the intraocular lens insertion device 10 in which the intraocular lens 12 is set is packaged by a sealed case or the like, stored and shipped, and provided. At that time, appropriate sterilization treatment and the like are performed in the process before and after packaging in the sealed case, or in both processes before and after packaging.
- the carrier member 36 is pulled below the stage 30 and removed from the instrument body 14. Thereby, the positioning state of the intraocular lens 12 by the action projections 40 a formed on the support member 36 is released, and the intraocular lens 12 can be moved on the lens mounting surface 34.
- a suitable lubricant may be injected into the stage 30 or the nozzle portion 56 through the injection hole 104 formed in the lid 48.
- the intraocular lens 12 can be lifted from the guide rails 76 before being pushed out by the pushing member 16.
- the support portion 20b is inserted into the inside of the optical portion 18 bent and deformed in a mountain-folded state, or the support portion 20b is inserted below the optical portion 18 before being bent and deformed in a mountain-folded state. Becomes easier.
- the distal opening 68 of the nozzle 56 is inserted into the incision provided in the eye tissue. Then, the push-out member 16 is pushed into the instrument body 14 while maintaining the insertion state of the nozzle portion 56 into the incisional wound.
- the pushing member 16 in the support portion 20 b is located closer to the lens mounting surface 34 than the step surface 86 formed on the pushing member 16, the pushing member 16 is pushed into the instrument body 14.
- the support portion 20 b located rearward in the axial direction (rearward in the moving direction) of the intraocular lens 12 enters the lower side of the step surface 86 formed on the push-out member 16, It abuts against the pressing surface 90.
- the support portion 20 b is curved and deformed in the direction approaching the optical portion 18 by being pushed toward the optical portion 18 by the pressing surface 90.
- the projecting end surface 88 When the projecting end surface 88 is positioned forward of the supporting portion 20b in the moving direction with the supporting portion 20b in contact with the pressing surface 90, the projecting end surface 88 of the pushing member 16 is the outer periphery of the optical portion 18. By pressing on the surface, the pressing force of the pushing member 16 is directly transmitted to the optical unit 18. At this time, the support portion 20 b may or may not be in contact with the outer peripheral surface of the optical portion 18.
- the pressing portions 54, 54 push the support portion 20b toward the lens mounting surface 34 side.
- a gap is formed between the support portion 20 b and the step surface 86.
- the support portion 20b moved while being pushed by the pushing member 16 is displaced to the upper side in the height direction (the opening side of the concave groove 32) by its own elasticity when it is released from the pressing position by the pressing portions 54,54.
- the step surface 86 is located above the support portion 20 b, the support portion 20 b abuts on the step surface 86. Thereby, when the support portion 20 b is pressed by the pressing surface 90, the upward displacement in the height direction is blocked by the step surface 86.
- the intraocular lens 12 fed to the proximal end 58 has a center portion of the optical back surface 24 in contact with the guide rails 76, 76, and Side rails 78, 78 are in contact with both side ends in a direction perpendicular to the extrusion direction at 22.
- an external force directed to the top surface 72 is exerted on the central portion of the back surface 24 of the optical section, while an external force directed to the bottom surface 70 is exerted on both end portions of the optical section front surface 22 in the direction orthogonal to the extrusion direction.
- FIG. 19 schematically shows how the optical part 18 of the intraocular lens 12 is deformed into a mountain-folded state, and the support parts 20a and 20b are not shown.
- the intraocular lens 12 subjected to the initial deformation in the mountain-folded state at the proximal end 58 is deformed to a smaller size through the intermediate portion 60 as shown in FIG. It is sent out to the part 68.
- the optical portion 18 is deformed along the inner surface shape of the through hole 64, and the mountain-folded state is further advanced, and the optical portion front surface 22 is rounded in a state in contact with the top surface 72.
- the optical portion 18 has a substantially oval shape at the tip portion 62 of the nozzle portion 56, as shown in FIG. 19C, by the through holes 64 which are gradually formed in a substantially oval shape toward the tip portion 62. Rounded to a small size.
- the deformation guide means is configured to include the pair of guide rails 76, 76, the pair of side rails 78, 78, and the through hole 64 of the specific shape formed in the nozzle portion 56.
- a deformed guide portion is constituted by the pair of guide rails 76, 76 and the pair of side rails 78, 78 respectively.
- the optical part 18 when the optical part 18 starts to be deformed in the mountain-folded state, it is formed on the optical part rear surface 24 side (concave side) of the optical part 18 deformed in the mountain-folded state. A space (gap) appears.
- the support portion 20b engaged with the tip end portion 84 of the push-out member 16 is deformed into a mountain-folded state, as schematically shown in FIG.
- the support 20 b is protected so as to be enclosed by the optical unit 18.
- the intraocular lens 12 moves in the nozzle unit 56 in a state in which the support unit 20 b is encased by the optical unit 18 as described above.
- the support portion 20b may not enter the side of the rear surface 24 of the optical portion 18 when the optical portion 18 is deformed to a mountain-folded state. For example, depending on the floating amount of the optical unit 18 from the guide rails 76 and 76 before the pushing member 16 pushes the supporting unit 20 b, the pressing amount of the supporting unit 20 b by the pressing units 54 and 54, etc. Before being deformed, the support portion 20b may intrude into the rear surface 24 side of the optical portion.
- the support unit 20 a located forward in the extrusion direction of the intraocular lens 12 is inserted into the rounded optical unit 18.
- the intraocular lens 12 in the through hole 64 develops a tacking state.
- the intraocular lens 12 is pushed out from the distal end side opening 68 of the nozzle unit 56 and inserted into the eye in a state where the support units 20a and 20b enter the inside (concave side) of the curved and deformed optical unit 18 Be done.
- the support portion 20b is pushed toward the optical portion 18 in a state of being embedded below the step surface 86 formed on the extrusion member 16, the optical portion It is possible to suppress the displacement of the support portion 20b in the direction (opening side of the concave groove 32) where the projection 18 is convex. As a result, when the optical part 18 is in a mountain-folded state, the support part 20 b can be inserted into the concave side (inner side) of the optical part 18.
- the support portion 20b is pressed toward the lens mounting surface 34 by the two pressing portions 54 and 54 in a state where the lid 48 is closed, the extrusion of the intraocular lens 12 by the extrusion member 16 is started.
- the support portion 20 b can be positioned closer to the lens mounting surface 34 than the step surface 86 before the mounting. Therefore, when the extruding member 16 of the intraocular lens 12 starts pushing the support portion 20b, the support portion 20b can be reliably embedded below the step surface 86. As a result, the upward displacement of the support portion 20b can be effectively suppressed.
- the optical unit 18 is bent and deformed into a mountain-folded state, so the optical unit 18 is bent and deformed into a mountain-folded state beforehand, and the intraocular lens 12 is staged 30. There is no need to set it. Therefore, the task of setting the intraocular lens 12 on the stage 30 is facilitated.
- the intraocular lens 12 has a one-piece structure in which the volume of the support portions 20a and 20b is larger than that of an intraocular lens having a three-piece structure, the concave side of the optical portion 18 deformed in the mountain-folded state The support portion 20b is inserted into a relatively large gap formed in the above. As a result, even with the intraocular lens 12 having a one-piece structure, it is possible to secure a sufficient space for releasing the support portion 20b.
- the intraocular lens 12 has a one-piece structure in which the rigidity of the support portions 20a and 20b is lower than that of the three-piece intraocular lens, the optical portion 18 in which the support portion 20b is deformed in a mountain-folded state Because it is protected so as to wrap up, damage to the support portion 20b can be effectively avoided.
- transformation guide means is not limited to what was comprised by each pair of guide rails 76 and 76 shown in this embodiment, the side rails 78 and 78, and the through-hole 64.
- FIG. For example, even in the through holes 64 not provided with the guide rails 76 and the side rails 78, a deformation guide means for folding and deforming the intraocular lens 12 into a mountain shape by appropriately setting the cross sectional shape and the change mode of the extrusion direction. It is also possible to constitute, and it is also possible to form a partial convex part and a crevice in penetration hole 64, and to constitute a modification guide means etc.
- the deformation guide means not only deforms the optical part 18 in a mountain-folded state as described above, but the rear part 24 of the optical part is convex toward the bottom surface 70 located on the lower side in the height direction.
- the optical unit 18 may be deformed in a valley-folded state extending in the movement direction of the inner lens 12.
- a through hole or the like having a cross-sectional shape in which the through hole 64 of the above embodiment is upside down can be adopted as the deformation guide means for realizing the valley-folded state.
- the pressing portion 54 is provided so as to protrude from the lens mounting surface 34, as shown in FIG.
- the support portion 20 b can be pressed upward in the height direction (the opening side of the concave groove 32), and the support portion 20 b can be displaced upward before extrusion by the extrusion member 16.
- the optical portion 18 may be pushed toward the lens mounting surface 34 by the left and right guide plate portions 50, 50 or the central guide plate portion 52. good.
- the push-out member a member provided with a tip portion having a shape in which the tip portion 84 of the above embodiment is upside down can be adopted.
- the pressing portion 54 may be provided to project from the base plate portion 38 of the support member 36 as long as the deformation guide means for realizing the valley folding state of the optical portion 18 is adopted.
- the insertion hole through which the pressing portion 54 is inserted is formed in the bottom wall of the concave groove 32, and the pressing portion 54 inserted into the insertion hole is placed on the lens when the carrier member 36 is assembled to the instrument body 14.
- a method of projecting on the mounting surface 34 or the like may be employed.
- the support portion 20b may be placed on the step surface 86 formed on the tip end portion 84 of the push-out member 16 to lift the support portion 20b upward.
- the optical portion 18 is bent and deformed with a ridge line extending parallel to the central axis of the instrument body 14 so as to be convex outward in the groove width direction of the concave groove 32 (that is, left or right in FIG. 14).
- the deformation guide means for example, a through hole having a cross-sectional shape as if the through hole 64 of the above embodiment is rotated 90 degrees around the central axis of the instrument main body 14 may be employed.
- the intraocular lens 12 is vertically placed in the concave groove 32, and is set on the stage 30 with the optical part front surface 22 and the optical part rear surface 24 facing outward in the groove width direction of the concave groove 32.
- the pushing member one provided with a tip portion as if the tip portion 84 of the above embodiment is rotated 90 degrees around the central axis may be employed. Thereby, the displacement of the support portion 20b in the direction in which the optical portion 18 becomes convex can be suppressed, and the support portion 20b can be inserted into the concave side (inner side) of the optical portion 18 as in the above embodiment.
- an intraocular lens insertion device as another embodiment of the present invention will be described.
- Each of the second to fifth embodiments described below is an example of another aspect of the pushing member employed in the intraocular lens insertion device of the first embodiment.
- only portions different from the first embodiment will be described, and members and portions having the same structure as the first embodiment are given the same reference numerals as the first embodiment. To explain.
- FIG. 23 shows a pushing member 106 that constitutes a second embodiment of the present invention.
- the push-out member 106 is viewed from the side in each of the boundary between the stepped surface 86 and the projecting end surface 88 and the boundary between the stepped surface 86 and the pressing surface 90 (perpendicular direction corresponding to FIG. 10 of the first embodiment).
- the guide surfaces 108a and 108b are curved in an arc shape.
- the front guide surface 108a is an arc section with a quarter circumference that is convex outward, while the rear guide surface 108b is a circular section with a quarter circumference that is concave outward. ing.
- the support surface 20a is supported by the guide surface 108a before the pushing out of the intraocular lens 12 by the pushing member 106, even if the support portion 20b is above the step surface 86.
- the portion 20b is guided toward the locking portion. That is, when the push-out member 106 advances and the support portion 20b abuts on the front guide surface 108a, the support portion 20b slides on the guide surface 108a, whereby the support portion 20b moves below the step surface 86. Do. Thereby, the upward displacement of the support portion 20b can be suppressed.
- the support portion 20 b slides on the step surface 86 and then slides on the rear guide surface 108 b, whereby the support portion 20 b moves from the step surface 86 It abuts on the pressing surface 90 at a position spaced downward.
- the support portion 20b can be pushed in a state in which the support portion 20b is further approached toward the lens mounting surface 34.
- the support portion 20 b can be further easily inserted into the optical portion rear surface 24 of the optical portion 18.
- the guide surfaces 108 a and 108 b need not be formed on both the front end and the rear end of the stepped surface 86.
- only the front guide surface 108a may be formed. In this case, even if the pressing portion 54 of the first embodiment is not provided and the support portion 20 b is not displaced toward the lens mounting surface 34 in advance, the support portion 20 b is inserted below the step surface 86. It is easy to
- only the rear guide surface 108b may be formed.
- the support portion 20 b can be made closer to the lens mounting surface 34, the optical unit 18 sufficiently floats from the lens mounting surface 34 based on the buoyancy by the lubricant injected from the injection hole 104. Even when the support 20b is not pressed sufficiently by the pressing unit 54 or the like, the support 20b can be easily inserted into the rear surface 24 side of the optical unit 18 even if the support 20b is not sufficiently pressed.
- the guide surfaces 108a and 108b need not be curved in an arc shape in a side view as shown in FIG. 23 as long as the guide portions 108a and 108b can guide the support portion 20b.
- the guide surfaces 108a and 108b it is possible to adopt an inclined surface which gradually goes downward in the figure as going axially backward.
- FIG. 27 shows a pushing member 110 that constitutes a third embodiment of the present invention.
- the pushing member 106 is gradually inclined downward in the height direction as it goes from the axial direction to the rear in the step surface 86.
- the component of the pushing force acts on the supporting portion 20b, whereby the supporting portion 20b has a stepped surface. It slides on 86 and approaches the lens mounting surface 34. Therefore, the support portion 20b can be more reliably inserted into the optical portion rear surface 24 side of the optical portion 18.
- the stepped surface 86 having the guide function as described above is not limited to that shown in FIG.
- the step surface 86 may be curved in an arc shape in a side view.
- FIG. 29 shows a pushing member 112 which constitutes a fourth embodiment of the present invention.
- the pushing member 112 is inclined downward with respect to the projecting end surface 88 as it goes axially rearward.
- the support portion 20b In the intraocular lens insertion device provided with such an extruding member 112, even if the support portion 20b is not previously positioned closer to the lens mounting surface 34 than the step surface 86, the support portion 20b abuts on the projecting end surface 88. However, the support portion 20 b enters the lower side of the step surface 86 by slidingly displacing the top of the projecting end surface 88 downward based on the action of the component force of the contact force.
- the projecting end face 88 having the guide function as described above is not limited to that shown in FIG.
- it may be a projecting end surface 88 curved in an arc shape in a side view.
- FIG. 31 shows a pushing member 114 which constitutes a fifth embodiment of the present invention.
- the pushing member 114 has a guide surface 116 curved in an arc shape that is convex outward in a side view with respect to the front upper end portion of the tip end portion 84.
- the guide surface 116 may be a beveled beveled surface that gradually inclines upward as going from the front to the rear in the side view, as shown in FIG.
- FIG. 33 shows a pushing member 118 that constitutes a sixth embodiment of the present invention.
- the push-out member 118 is integrally formed with an engagement protrusion 120 as an engagement portion projecting forward in the axial direction of the push-out member 118 in a region substantially on the upper half in the height direction of the tip end portion 84.
- the engagement protrusion 120 is substantially in the shape of a right triangle in a side view, and the side surface 122 that constitutes an oblique side in a side view is an inclined surface that gradually moves downward from the front to the rear.
- the side surface 122 constitutes a tip end surface in the upper half area of the tip end portion 84 of the push-out member 118 in the height direction.
- the area on the lower half of the height direction of the tip end portion 84 of the pushing member 118 is a pressing surface 90 having a planar shape that spreads in the direction perpendicular to the axis of the pushing member 118 There is.
- an intraocular lens insertion device provided with such a pushing member 118
- the support portion 20b in contact with the side surface 122 of the engagement protrusion 120 has an abutment force of By action, the sliding movement is made downward on the side surface 122.
- the support part 20b moves to the lens mounting surface 34 side.
- the support portion 20 b can easily enter the inside (concave side) of the curved and deformed optical portion 18.
- the side surface 122 of the engagement protrusion 120 which has a guide function as mentioned above is not limited to what was shown in FIG.
- it may be curved in an arc shape that is concave outward in side view.
- FIG. 35 shows a pushing member 124 that constitutes a seventh embodiment of the present invention.
- the pushing member 124 is an inclined surface in the downward direction as the leading end surface 126 across the leading end portion 84 goes from the front to the rear.
- the tip end surface 126 constitutes an engaging portion.
- the support portion 20b in contact with the distal end surface 126 acts as an apical force by the action of the contact component force. It slide-displaces toward the upper part downward. Thereby, the support part 20b moves to the lens mounting surface 34 side. As a result, the support portion 20 b can easily enter the inside (concave side) of the curved and deformed optical portion 18.
- the distal end surface 126 of the distal end portion 84 having the guide function as described above is not limited to that shown in FIG.
- the distal end surface 126 of the distal end portion 84 may be curved in an arc shape in a side view.
- the support member 36 is detachably assembled to the stage 30 of the instrument main body 14, and the intraocular lens 12 is configured by the action projections 40a, 40a, 40b and 40b of the support member 36.
- a carrying member 36 is not essential in the present invention.
- the intraocular lens 12 is placed on the lens mounting surface 34 of the stage 30. It may be placed directly and set.
- the intraocular lens 12 is not packaged and provided in advance but provided separately from the intraocular lens insertion device 10 at the time of treatment. It is desirable that the intraocular lens 12 be unpacked and housed and set on the lens mounting surface 34 of the stage 30 of the intraocular lens insertion device 10. Thereby, the problem caused by the fact that the lens mounting surface 34 is in direct contact with the optical part 18 of the intraocular lens 12 for a long period of time in the process of storage and circulation and exerts a stress can be avoided. It can.
- the optical member 18 of the intraocular lens 12 or the intermediate portion or tip portion in the extension direction of the support portions 20a and 20b abuts on the position to support them. It is also possible to form a part.
- the shape and structure of the stage 30 and the insertion tube portion (nozzle portion 56) of the instrument body 14 for determining the deformation mode of the optical portion of the intraocular lens are intended to be deformed when the intraocular lens is inserted into the eye It is appropriately set according to the shape, and is not limited to the description of the embodiment including, for example, adoption and rejection of the guide rails 76 and 76, the side rails 78 and 78, and the like. That is, the mode of making small deformation when inserting the intraocular lens is not limited to the mountain-folded state or valley-folded state as described above, but is variously known as in the prior art. According to such a target deformed shape, various structures known in the prior art can also be adopted in the intraocular lens insertion device of the present invention.
- the intraocular lens 12 was placed flat on the lens mounting surface 34 in a free state, but when the intraocular lens 12 is set on the stage 30, the axis of the optical unit 18 is the axis of the instrument body 14. It may be in a mountain-folded state in which ridge lines extend in a direction or in a valley-folded state in which a valley line extends in an axial direction of the tool body 14.
- a method of setting the optical portion 18 in a mountain-folded state or a valley-folded state in advance for example, reducing the groove width of the concave groove 32 formed in the stage 30 may be employed.
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Abstract
Description
Claims (6)
- 光学部に一対の支持部が突出形成された眼内レンズがセットされる略筒状の器具本体と、該器具本体に対して軸方向の後方から挿し入れられて該器具本体に組み付けられる押出部材とを含んで構成されていると共に、該器具本体の軸方向中間部分には該眼内レンズがセットされるステージが設けられて、該ステージより軸方向先端側に向かって先細形状の挿入筒部が形成されており、該ステージにセットされた該眼内レンズを該押出部材で該器具本体の軸方向前方に移動させて該挿入筒部を通じて小さく変形せしめて押し出すことにより眼内に挿入する眼内レンズ挿入器具において、
前記一対の支持部が前記光学部から前記器具本体の軸方向前後方向に延び出した状態で前記眼内レンズが前記ステージにセットされて、前記押出部材で前記器具本体の軸方向前方に向かって移動されることにより該光学部が該挿入筒部の外周側に向かって凸となる湾曲形状に変形されるようになっていると共に、該眼内レンズを押す該押出部材の先端面において、該光学部から前記器具本体の軸方向後方に延び出した該支持部に係合して該光学部が湾曲変形されて凸となる側への該支持部の変位を抑制する係合部が設けられていることを特徴とする眼内レンズ挿入器具。 - 前記眼内レンズが前記押出部材で前記器具本体の軸方向前方に向かって移動されることにより前記光学部が前記ステージの上方又は下方に向かって凸となる湾曲形状に変形されるようになっていると共に、該眼内レンズが該ステージにセットされた状態で、該光学部から該器具本体の軸方向後方に延び出した前記支持部を、該光学部が湾曲変形されて凸となる該ステージの上方又は下方とは反対に向けて押圧して、該光学部に対して変形変位させる押圧部が設けられている請求項1に記載の眼内レンズ挿入器具。
- 前記眼内レンズが前記押出部材で前記器具本体の軸方向前方に向かって移動されることにより前記光学部が前記ステージの上方又は下方に向かって凸となる湾曲形状に変形されるようになっていると共に、該押出部材の先端面において、該光学部が湾曲変形されて凸となる該ステージの上方及び下方の一方の側が他方の側よりも軸方向に突出されて段差面が形成されており、この段差面に対して前記支持部が係止されることで該支持部の変位を規制する前記係合部が構成されている請求項1又は2に記載の眼内レンズ挿入器具。
- 前記ステージにセットされる前記眼内レンズが、前記光学部に対して前記一対の支持部が一体成形されたワンピース構造である請求項1~3の何れか1項に記載の眼内レンズ挿入器具。
- 前記器具本体には、前記光学部をその移動方向に延びる稜線又は谷線をもって前記ステージの上方及び下方の何れか一方に凸となる山形又は谷形に折畳み変形させる変形ガイド手段が設けられている請求項1~4の何れか1項に記載の眼内レンズ挿入器具。
- 前記変形ガイド手段が、前記挿入筒部内を移動せしめられる前記眼内レンズに干渉して該挿入筒部内での移動に伴って該眼内レンズの前記光学部を次第に変形させる変形ガイド部によって構成されている請求項5に記載の眼内レンズ挿入器具。
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KR1020127015537A KR101630637B1 (ko) | 2009-11-17 | 2009-11-17 | 안내 렌즈 삽입 기구 |
CN200980162482.8A CN102647958B (zh) | 2009-11-17 | 2009-11-17 | 眼内透镜插入器具 |
US13/509,467 US20120253356A1 (en) | 2009-11-17 | 2009-11-17 | Intraocular lens insertion device |
EP09851417.7A EP2502603B1 (en) | 2009-11-17 | 2009-11-17 | Intraocular lens insertion device |
ES09851417.7T ES2617979T3 (es) | 2009-11-17 | 2009-11-17 | Dispositivo de inserción de lente intraocular |
PCT/JP2009/006173 WO2011061791A1 (ja) | 2009-11-17 | 2009-11-17 | 眼内レンズ挿入器具 |
JP2011541732A JP5412526B2 (ja) | 2009-11-17 | 2009-11-17 | 眼内レンズ挿入器具 |
HK13101747.9A HK1174527A1 (en) | 2009-11-17 | 2013-02-07 | Intraocular lens insertion device |
US15/140,108 US9713528B2 (en) | 2009-11-17 | 2016-04-27 | Intraocular lens insertion device |
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PCT/JP2009/006173 WO2011061791A1 (ja) | 2009-11-17 | 2009-11-17 | 眼内レンズ挿入器具 |
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US13/509,467 A-371-Of-International US20120253356A1 (en) | 2009-11-17 | 2009-11-17 | Intraocular lens insertion device |
US15/140,108 Division US9713528B2 (en) | 2009-11-17 | 2016-04-27 | Intraocular lens insertion device |
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US (2) | US20120253356A1 (ja) |
EP (1) | EP2502603B1 (ja) |
JP (1) | JP5412526B2 (ja) |
KR (1) | KR101630637B1 (ja) |
CN (1) | CN102647958B (ja) |
ES (1) | ES2617979T3 (ja) |
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US20130338676A1 (en) * | 2010-12-14 | 2013-12-19 | Kowa Company, Ltd. | Intraocular lens insertion apparatus |
WO2014003186A1 (ja) * | 2012-06-29 | 2014-01-03 | 興和株式会社 | 眼内レンズの挿入器具及び、眼内レンズの挿入器具に備えられる位置決め部材 |
JP2014147612A (ja) * | 2013-02-04 | 2014-08-21 | Kowa Company Ltd | 眼内レンズの挿入器具 |
JPWO2013038687A1 (ja) * | 2011-09-15 | 2015-03-23 | 興和株式会社 | 眼内レンズの挿入器具 |
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JP2016019608A (ja) * | 2014-07-14 | 2016-02-04 | 株式会社ニデック | 眼内レンズ挿入器具及び眼内レンズ挿入システム |
JP2020146526A (ja) * | 2013-03-15 | 2020-09-17 | パワーヴィジョン・インコーポレーテッド | 眼内レンズの収容および載置装置ならびにその使用方法 |
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Also Published As
Publication number | Publication date |
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CN102647958A (zh) | 2012-08-22 |
KR20120087175A (ko) | 2012-08-06 |
US9713528B2 (en) | 2017-07-25 |
JPWO2011061791A1 (ja) | 2013-04-04 |
HK1174527A1 (en) | 2013-06-14 |
EP2502603A4 (en) | 2014-07-02 |
US20160278911A1 (en) | 2016-09-29 |
US20120253356A1 (en) | 2012-10-04 |
ES2617979T3 (es) | 2017-06-20 |
JP5412526B2 (ja) | 2014-02-12 |
CN102647958B (zh) | 2014-11-26 |
KR101630637B1 (ko) | 2016-06-15 |
EP2502603A1 (en) | 2012-09-26 |
EP2502603B1 (en) | 2016-10-19 |
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