JP2011177523A - Puncture apparatus capable of adjusting puncture depth - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a puncture apparatus which can hygienically and stably adjust a puncture depth for a long period of time without the need of complicated maintenance. <P>SOLUTION: In the puncture apparatus provided with a puncture depth adjusting mechanism for adjusting the puncture depth by a puncture element 21 to the skin, the puncture depth adjusting mechanism uses a cam mechanism, and includes: a displacement body 6 movable in a puncture direction with respect to a housing or a retracting direction that is a direction opposite to the puncture direction; and a cover 7 movable in the puncture and retracting directions integrally with the displacement body 6. In a state that the cover 7 is removed from the housing, the puncture element 21 can be held. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a puncture device for moving a puncture element to pierce the puncture element into the skin. More specifically, the present invention relates to a puncture device that can adjust the puncture depth of the puncture element with respect to the skin.

  As an adjustment mechanism for adjusting the puncture depth in the puncture device, for example, as shown in FIG. 19 or FIG. 20 of the present application, three members of inner sleeves 90A and 90B, intermediate rings 91A and 91B, and outer sleeves 92A and 92B. (For example, refer to Patent Documents 1 and 2).

  The adjustment mechanism 9A shown in FIG. 19 is configured such that the intermediate ring 91A is fixed to the inner sleeve 90A, and the outer sleeve 92A moves in the directions of arrows N1 and N2 in the drawing relative to the intermediate ring 91A. Is. More specifically, the end surface 93A on the arrow N1 direction side of the intermediate ring 91A is formed in an inclined shape, while an inclined surface 94A that can contact the end surface 93A of the intermediate ring 91A is formed in the outer sleeve 92A. Has been. In this configuration, by rotating the outer sleeve 92A, the outer sleeve 92A moves in the N1 and N2 directions with respect to the intermediate ring 91A and the inner sleeve 90A.

  On the other hand, the adjusting mechanism 9B shown in FIG. 20 is configured such that the intermediate ring 91B is fixed to the outer sleeve 92B, and the intermediate ring 91B moves in the directions of arrows N1 and N2 in the drawing with respect to the inner sleeve 90B. It has been done. More specifically, a thread groove 95B is formed on the inner surface of the intermediate ring 91B, while a thread 96B is formed on the outer surface of the distal end portion of the inner sleeve 90B. In this configuration, by rotating the outer sleeve 92B, the intermediate ring 91B and the outer sleeve 92B move in the N1 and N2 directions with respect to the inner sleeve 90B.

  When the adjustment mechanisms 9A and 9B are incorporated in the puncture device, the movement of the lancet L in the direction of the arrow N1 is limited at the distal end portions 97A and 97B of the internal sleeves 90A and 90B. Therefore, by moving the outer sleeves 92A and 92B in the N1 and N2 directions with respect to the inner sleeves 90A and 90B, the distal end portions 97A and 97B of the inner sleeves 90A and 90B and the distal end portions 98A and 98B of the outer sleeves 92A and 92B , And thus the length by which the needle portion L ′ of the lancet L protrudes from the outer sleeves 92A, 92B can be adjusted.

  In the adjustment mechanisms 9A and 9B, the movement of the lancet L is restricted at the front end portions 97A and 97B of the inner sleeves 90A and 90B, the front end portions 98A and 98B of the outer sleeves 92A and 92B, and the front end portions 97A of the inner sleeves 90A and 90B. , 97B is adjusted to adjust the puncture depth. Therefore, as shown in FIG. 21, blood B tends to accumulate between the front end portions 98A and 98B of the outer sleeves 92A and 92B and the front end portions 97A and 97B of the inner sleeves 90A and 90B, which is unsanitary. Therefore, when considering hygiene, it is necessary to frequently disassemble and clean the adjusting mechanisms 9A and 9B, and then assemble the adjusting mechanisms 9A and 9B again. However, the adjustment mechanisms 9A and 9B are scheduled to be attached to and detached from the main body of the puncture device in the assembled state, and the work of disassembling and assembling the adjustment mechanisms 9A and 9B is not easy and the user is troublesome. Forced to work. In addition, if the adjustment mechanisms 9A and 9B are frequently disassembled and assembled, there is a high possibility that the adjustment mechanisms 9A and 9B will be damaged and parts such as the external sleeves 92A and 92B will be lost. In addition, it is not only troublesome to clean a plurality of complicated parts, but there is a high possibility that a portion that is not sufficiently cleaned remains. Further, the adjusting mechanisms 9A and 9B may be configured so as not to be disassembled in order to avoid breakage or loss, and in that case, there is a higher possibility that a portion that cannot be cleaned will remain.

International Publication No. 97/4707 Pamphlet Japanese National Patent Publication No. 10-508527

  The present invention has been conceived under such circumstances, and does not require complicated maintenance, so that the puncture depth can be adjusted stably over a long period of time in a sanitary manner. It is an issue.

  In the present invention, in order to solve the above-described problems, the following technical means are taken.

  That is, in the present invention, a puncture device for moving the puncture element held in the housing in the puncture direction and piercing the puncture element into the skin, in order to adjust the puncture depth of the puncture element with respect to the skin In the puncture device having the puncture depth adjustment mechanism, the puncture depth adjustment mechanism uses a cam mechanism and is in the puncture direction or the direction opposite to the puncture direction with respect to the housing. There is provided a puncture apparatus capable of adjusting the puncture depth, characterized by comprising a displacement body movable in the retraction direction and a cover that integrally moves in the puncture and retraction direction.

  The cam mechanism is, for example, an operating body for moving a displacement body, and is provided with an operating body having a shaft portion, a housing and the displacement body, and a first and a second for allowing the shaft portion to move. And a groove portion. In this case, it is preferable that the puncture depth adjusting mechanism is configured such that the position of the displacement body with respect to the housing is changed by moving the shaft portion in the first and second groove portions.

  In this puncture device, the position of the displacement body with respect to the housing is adjusted by making the cover detachable from the displacement body and applying the puncture depth adjustment mechanism to the displacement body with the cover removed. It is preferable to configure. The cover is configured to be attached to the displacement body so as to cover at least a part of the displacement body, for example.

  The cover is formed to be transparent or translucent so that the inside can be observed, for example.

It is a whole perspective view which shows the puncture apparatus which concerns on the reference example of this invention. It is a perspective view which shows the state which removed the cover from the state shown in FIG. It is sectional drawing which follows the III-III line of FIG. It is a disassembled perspective view of the front-end | tip part of the puncture apparatus shown in FIG. It is sectional drawing of the guide member in the puncture apparatus shown in FIG. (A) is the whole perspective view of the rotary body in the puncture apparatus shown in FIG. 1, (b) is the sectional drawing. It is sectional drawing for demonstrating the operation | movement which mounts | wears a lancet with the puncture apparatus shown in FIG. It is sectional drawing for demonstrating the operation | movement which mounts | wears a lancet with the puncture apparatus shown in FIG. FIG. 6 is a cross-sectional view for explaining an operation of adjusting the puncture depth in the puncture device shown in FIG. 1. It is sectional drawing for demonstrating the puncture operation | movement in the puncture apparatus shown in FIG. It is sectional drawing for demonstrating the puncture operation | movement in the puncture apparatus shown in FIG. It is sectional drawing of the puncture apparatus which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the puncture operation | movement of the puncture apparatus shown in FIG. It is principal part sectional drawing of the puncture apparatus which concerns on the other reference example of this invention. It is a whole perspective view of the puncture apparatus which concerns on other embodiment of this invention. It is sectional drawing which follows the XVI-XVI line | wire of FIG. It is sectional drawing which follows the XVII-XVII line of FIG. FIG. 16 is a cross-sectional view for explaining a puncturing operation of the puncture device shown in FIG. 15. It is a figure for demonstrating an example of the puncture depth adjustment mechanism in the conventional puncture apparatus, (a) is an exploded perspective view, (b) is an exploded sectional view. It is a figure for demonstrating the other example of the puncture depth adjustment mechanism in the conventional puncture apparatus, (a) is a disassembled perspective view, (b) is shown with an assembly sectional drawing. It is principal part sectional drawing of the adjustment mechanism for demonstrating the subject in the conventional adjustment mechanism.

  Hereinafter, preferred embodiments and reference examples of the present invention will be specifically described with reference to the drawings.

  The puncture apparatus 1 shown in FIGS. 1 to 3 relates to a reference example of the present invention, and is used with a lancet 2 as shown in FIG. The lancet 2 has a form in which the needle portion 21 protrudes from the main body portion 20. The needle portion 21 is integrated with the main body portion 20 by insert molding when the main body portion 20 is formed of synthetic resin, for example.

  The puncture device 1 includes a housing 3, a lancet holder 4, an operation cap 5, a rotating body 6 and a cover 7.

  The housing 3 is for housing the lancet holder 4. The housing 3 has a configuration in which a guide member 31 is fixed to the main body 30.

  The main body 30 has a through hole 32, a convex portion 33, and an annular concave portion 34. The through hole 32 is for allowing the operation cap 5 to move, and is provided in the upper wall 35 of the housing 3. The convex portion 33 is for holding the coil springs S <b> 1 and S <b> 2 and engaging the lancet holder 4. The annular recess 34 is for fixing the guide member 31 to the main body 30.

  The guide member 31 is for restricting the movement of the lancet holder 4 to be described later in the puncturing direction N1 and for supporting the rotating body 6. As shown well in FIGS. 4 and 5, the guide member 31 includes an outer flange portion 36, an inner flange portion 37, a plurality of linear recess portions 38, and a spiral recess portion 39.

  The outer flange portion 36 is used to fix the guide member 31 to the main body portion 30 and is fitted into the annular recess 34 of the main body portion 30. Thereby, the guide member 31 is fixed to the main body 30 so as not to rotate. The inner flange portion 37 is for causing interference with a flange portion 42 of the lancet holder 4 described later (see FIG. 3). The plurality of linear recesses 38 are for engaging projections 64 (see FIG. 6A) of the movable part 60 of the rotating body 6 described later, and extend in the puncture and retraction directions N1 and N2 and guide members. 31 are provided at regular intervals in the circumferential direction on the inner surface of 31. The spiral recess 39 is for engaging inclined projections 65A and 65B (see FIGS. 6A and 6B) of projecting pieces 61A and 61B in the rotating body 6 described later.

  As can be seen from FIG. 3, the lancet holder 4 is for holding the lancet 2 and can be moved in the puncture direction N <b> 1 by a pressing operation of the operation cap 5. The lancet holder 4 is provided with a pair of engaging claws 40, a recess 41 and a flange portion 42.

  The pair of engaging claws 40 can be engaged with the convex portion 33 of the housing 3 and have elasticity capable of approaching and separating from each other (see FIG. 10). The recess 41 is for holding the lancet 2. The flange portion 42 is a portion that interferes with the inner flange portion 37 of the guide member 31 as described above, and is used to hold the coil spring S <b> 1 together with the convex portion 33 of the housing 3. The coil spring S <b> 1 is in a compressed state when the pair of engaging claws 40 are engaged with the convex portion 33. Therefore, when the state in which the pair of engaging claws 40 are engaged with the convex portion 33 is released, the lancet holder 4 is moved in the puncture direction N1 by the elastic force of the coil spring S1 (see FIGS. 10 and 11).

  The operation cap 5 is a portion that is operated when the lancet holder 4 is moved in the puncture direction N1, and is slidably held in the housing 3 so that a part thereof protrudes from the through hole 32 of the housing 3. . The operation cap 5 has a flange portion 50 and a pair of pressing portions 51. A coil spring S <b> 2 is disposed between the flange portion 50 and the convex portion 33 of the housing 3. The flange portion 50 is in contact with the upper wall 35 of the housing 3 in a natural state. On the other hand, when the operation cap 5 is pressed in the puncture direction N1, the operation cap 5 moves in the puncture direction N1 while compressing the coil spring S2 (see FIG. 10). On the other hand, when the pressing force on the operation cap 5 is removed, the operation cap 5 returns to the original position by the elastic force of the coil spring S2 (see FIG. 11).

  As shown in FIG. 10, each pressing portion 51 presses the pair of engaging claws 40 when the operation cap 5 is moved in the puncturing direction N1 by a predetermined distance or more, so that the end portions thereof are close to each other. Each engaging claw 40 is shifted to the above. The pair of engaging claws 40 are released from the engaged state (latched state) with the convex portion 33 by the action of the pressing portion 51, and as described above, the lancet holder 4 is moved in the puncture direction N1 by the elastic force of the coil spring S1. It is moved in the direction (see FIG. 11).

  As shown in FIGS. 6A and 6B, the rotating body 6 is a portion that is operated when adjusting the puncture depth, and includes a movable portion 60, a pair of projecting pieces 61A and 61B, and a flange portion 62. have.

  The movable portion 60 is provided with a spring property by providing an L-shaped cutout 63, and has a protrusion 64 extending in the directions of arrows N1 and N2. As described above, the protrusion 64 is for engaging the linear recess 38 (see FIG. 5) in the guide member 31. The pair of protruding pieces 61A and 61B protrude in the direction of the arrow N2 while facing each other with the center of the rotating body 6 therebetween, and are different in height from each other. Inclined protrusions 65A and 65B are formed on the protruding pieces 61A and 61B. As described above, the inclined protrusions 65A and 65B are for engaging with the spiral recess 39 of the guide member 31, and are disposed on a spiral locus having the same pitch as that of the spiral recess 39 (see FIG. 5). However, in the rotating body 6, the number of protruding pieces is not limited to two, and may be one or three or more. The flange portion 62 is used when the cover 7 is attached, and has an annular recess 66 for engaging an annular projection 71 of the cover 7 described later (see FIG. 3).

  A scale 68 is attached to the end 67 of the rotating body 6. This scale 68 is used when adjusting the puncture depth. More specifically, as shown in FIG. 2 and FIG. 4, by rotating the rotating body 6, the target number on the scale 68 is aligned with the mark M provided on the outer surface of the guide member 31. The puncture depth can be adjusted.

  As expected from FIGS. 4 to 6, if the rotating body 6 is rotated with the protrusion 64 and the inclined protrusions 65 </ b> A and 65 </ b> B engaged with the linear recess 38 and the spiral recess 39 of the guide member 31, the inclined protrusion 65A and 65B move in the spiral recess 39, and the inclined protrusions 65A and 65B perform a spiral motion. As a result, the rotating body 6 moves in the puncturing or retracting directions N1 and N2 with respect to the guide member 31 (see FIGS. 9A and 9B). On the other hand, the protrusion 64 performs a spiral motion in the same manner as the inclined protrusions 65A and 65B as the rotating body 6 rotates. At this time, the protrusion 64 is related to the linear recess 38 corresponding to the position of the inclined protrusions 65A and 65B. Match. Therefore, when the rotating body 6 is rotated, a click feeling is obtained by the engagement between the protrusion 64 and the linear recess 38, and the rotation of the rotating body 6 is performed with the protrusion 64 and the linear recess 38 engaged. By stopping, the state where the rotating body 6 is fixed to the guide member 31 is maintained.

  The cover 7 shown in FIGS. 1 to 4 is for bringing the needle portion 21 of the lancet 2 into contact with the skin, and is entirely transparent so that the inside of the cover 7 can be observed. Is formed into a thing. Accordingly, even when the cover 7 is attached to the rotating body 6, it can be confirmed whether or not the lancet 2 is attached to the lancet holder 4, so that erroneous operations can be suppressed. Furthermore, it becomes possible to confirm whether blood has entered the cover 7 after puncturing. As a result, it is only necessary to wash the cover 7 when blood enters the inside of the cover 7, and it is not necessary to wash the cover 7 every time puncture is performed.

  The cover 7 has a through hole 70 provided at the tip portion and an annular convex portion 71 provided on the inner surface. The through hole 70 is for allowing the needle portion 21 of the lancet 2 to protrude. The annular convex portion 71 is for engaging with the flange portion 62 of the rotating body 6 as described above. Although the annular convex portion 71 is not clearly shown in the drawing, the width dimension and the height dimension are smaller than the width dimension and the depth dimension of the flange portion 62 of the rotating body 6. Therefore, when the cover 7 is rotated, the cover 7 rotates independently of the rotating body 6, and the cover 7 is detachable from the rotating body 6. As a result, first, even if an external force acts on the cover 7 or the user rotates the cover 7, the rotating body 6 does not rotate at that time, and the puncture depth that has been set once is not prepared Will not be changed. Secondly, even if blood enters the inside of the cover 7, it can be easily and surely washed by removing the cover 7, so that maintenance labor is reduced and it is hygienic. In addition, since the inside of the cover 7 can be cleaned by removing the cover 7, it is not necessary to disassemble the entire mechanism for adjusting the puncture depth. In this respect also, it can be said that the maintenance burden is reduced.

  As described above, the cover 7 is attached to the rotating body 6 by engaging the annular convex portion 71 provided on the inner surface thereof with the flange portion 62 of the rotating body 6. Therefore, in a state where the cover 7 is attached to the rotating body 6, the end portion 67 provided with the scale 68 in the rotating body 6 is accommodated inside the cover 7. As a result, the scale 68 is not exposed to the outside since the scale 68 is not exposed to the outside when the cover 7 is attached to the rotating body 6, and the user has a threatening idea that the rotating body 6 should be operated. Freed from urges. Therefore, it becomes possible to suppress the operation of the puncture apparatus 1 from giving a complicated impression.

  Next, the usage method of the puncture apparatus 1 is demonstrated. In the puncturing operation, first, the lancet 2 is mounted on the lancet holder 4 as shown in FIG. As shown in FIG. 7, the lancet 2 is attached with the body portion 20 of the lancet 2 with the protective cap 22 attached to the recess 41 of the lancet holder 4 with the cover 7 removed from the housing 3. This is done by fitting from the side opposite to the part 21. At this time, the pair of engaging claws 40 of the lancet holder 4 may be engaged with the convex portion 33 of the housing 3 to achieve a latched state. Of course, the latch state may be performed separately from the operation of holding the lancet 2. That is, the latch state may be achieved before the lancet 2 is held.

  When the lancet 2 with the protective cap 22 is attached to the lancet holder 4, the protective cap 22 is removed as shown in FIG. The protective cap 22 is removed by, for example, picking the protective cap 22 with a fingertip and twisting off the protective cap 22.

  Before and after the mounting of the lancet 2, the puncture depth is adjusted as necessary. The adjustment of the puncture depth is performed by rotating the rotator 6 and moving the rotator 6 relative to the housing 3 in the puncture or retreat direction N1, N2. The puncture depth is selected by aligning the number of the scale 68 on the rotating body 6 with the mark M of the guide member 31 as described above. As shown by the phantom lines in FIGS. 9A and 9B, the rotating body 6 is later fitted with a cover 7, so that the rotating body 6 is moved in the puncturing or retracting direction N1, N2. Then, the position of the cover 7 at the time of puncturing, and thus the position of the through hole 70 of the cover 7 can be selected. Here, the movement of the lancet holder 4 in the puncturing direction N1 is restricted by the flange portion 42 interfering with the inner flange portion 37 of the guide member 31, but the position of the inner flange portion 37 is the rotation of the rotating body 6. Regardless of whether it is fixed. Therefore, the position where the lancet holder 4 is stopped is fixed regardless of the position of the rotating body 6. Therefore, by rotating the rotating body 6 and changing the position of the cover 7 (through hole 70), the amount by which the needle portion 21 of the lancet 2 protrudes from the through hole 7 can be adjusted.

  Next, as shown in FIG. 10, after attaching the cover 7 to the rotating body 6, the end surface 71 of the cover 7 is brought into close contact with the skin Sk, and then the lancet 2 is punctured as shown in FIG. The needle part 21 of the lancet 2 is pierced into the skin Sk by moving in the direction N1. As shown in FIG. 10, the piercing of the needle portion 21 with respect to the skin Sk is performed by depressing the operation cap 5 in the puncturing direction N1 and releasing the latched state of the lancet holder 4. Accordingly, as shown in FIG. 11, the lancet holder 4 is moved in the puncture direction N1 by the elastic force of the coil spring S1, and the needle portion 21 of the lancet 2 is pierced into the skin Sk. At this time, the skin Sk is incised, and blood comes out from the skin. In a state where the needle portion 21 is pierced into the skin Sk, the coil spring S1 is extended because the coil spring S1 is fixed to the convex portion 33 of the housing 3 and the flange portion 42 of the lancet holder 4. Therefore, since the needle part 21 is immediately extracted from the skin Sk by the elastic force of the coil spring S1, the time during which the needle part 21 pierces the skin Sk is short, and puncture pain can be reduced.

  Next, a puncture device according to a first embodiment of the present invention will be described with reference to FIGS. 12 and 13.

  The puncture device 1B shown in FIG. 12 includes a puncture depth adjustment mechanism similar to the puncture device 1 (see FIG. 3) according to the reference example. That is, the puncture depth adjusting mechanism has a configuration in which the cover 7 is held so as to be integrally movable with the rotating body 6 and the rotating body 6 is screwed with the guide member 31.

  On the other hand, the puncture device 1B is different from the puncture device 1 (see FIG. 3) in the configuration for moving the lancet holder 45B. In other words, the puncture device 1B is configured to use the cam mechanism 4B to move the lancet 2 and regulate the movement of the lancet 2 in the puncture direction N1 without interfering with the housing 3B.

  The cam mechanism 4B has a link member 43B, a moving plate 44B, and a lancet holder 45B, and converts the reciprocating motion of the moving plate 44B into the reciprocating motion of the lancet holder 45B via the circular motion of the link member 43B. It is configured as follows.

  The link member 43B connects the moving plate 44B and the lancet holder 45B, and moves the lancet holder 45B in conjunction with the movement when the moving plate 44B moves. The link member 43B has a first movable pin 43Ba, a second movable pin 43Bb, and a fixed pin 43Bc. These pins 43Ba, 43Bb, and 43Bc are connected to each other via arm members 43Bd and 43Be. The fixing pin 43Bc is not clearly shown on the drawing, but is fixed to the housing 3B. Thereby, link member 43B can rotate centering on fixed pin 43Bc with respect to housing 3B.

  The moving plate 44B is movable with respect to the housing 3B in the puncturing and retracting directions N1, N2, and is connected to the housing 3B via a coil spring S3. The moving plate 44B has a groove 44Ba, an operation part 44Bb, and a hook part 44Bc. The groove 44Ba is for allowing the movement of the first movable pin 43Ba in the link member 43B. The operation unit 44Bb is used when the moving plate 44B is manually moved, and is allowed to move in the puncture and retraction directions N1 and N2 by the opening 38B of the housing 3B. The hook portion 44Bc is for engaging the protruding portion 33B of the housing 3B to latch the moving plate 44B in the housing 3B. In a state where the hook portion 44Bc is engaged with the protruding portion 33B, the coil spring S3 is extended, and the moving plate 44B is urged toward the retracting direction N2. Therefore, when the state where the hook portion 44Bc is engaged with the protruding portion 33B is released, the moving plate 44B moves in the puncture direction N1 due to the elastic force of the coil spring S3. The engagement state of the hook portion 44Bc is released using the latch release member 46B. The latch release member 46B has moderate elasticity and is fixed to the housing 3B at the fixed end 46Ba so that the free end 46Bb can swing around the fixed end 46Ba as a fulcrum. Yes. The free end portion 46Bb is disposed close to the hook portion 44Bc, and is configured to interfere with the hook portion 44Bc when the free end portion 46Bb is pressed.

  The lancet holder 45B is for holding the lancet 2 and moving the lancet 2, and is movable in the puncturing and retracting directions N1 and N2 in the same manner as the moving plate 44B. The lancet holder 45B has a holder portion 45Ba for holding the lancet 2 and a groove 45Bb for connecting to the moving plate 44B via a link member 43B. The groove 45Bb is for allowing the movement of the second movable pin 43Bb in the link member 43B, and extends in a direction orthogonal to the puncturing and retracting directions N1, N2.

  In the puncture device 1B, as shown in FIGS. 12 and 13, after engaging the hook portion 44Bc of the moving plate 44B with the protruding portion 33B, the free end portion 46Bb of the latch release member 46B is pushed down, thereby the lancet. The two needle portions 21 can be pierced into the skin Sk. When the free end portion 46Bb of the latch release member 46B is pressed, the free end portion 46Bb acts on the hook portion 44Bc, and the state where the hook portion 44Bc is engaged with the protruding portion 33B is released. At this time, as shown in FIGS. 13A and 13B, the moving plate 44B moves in the retracting direction N2, and accordingly, the link member 43B rotates in the clockwise direction to move the lancet holder 45B. The needle portion 21 of the lancet 2 is pierced into the skin Sk by being pushed down in the puncturing direction N1. Thereafter, as shown in FIGS. 13B and 13C, the moving plate 44B further moves in the retracting direction N2, and accordingly, the lancet holder 45B is lifted in the retracting direction N2, and the lancet 2 is removed from the skin Sk. The needle portion 21 is removed.

  The cam mechanism in the present embodiment is an example, and the lancet holder may be moved in the puncturing and retracting directions using another cam mechanism. For example, a member corresponding to the moving plate can be moved in a circular motion in the housing, and the lancet holder can be moved in the puncturing or retracting direction in conjunction with the circular motion.

  Next, a puncture apparatus according to another reference example of the present invention will be described with reference to FIG.

  In puncture device 1C shown in FIG. 14, a puncture depth adjustment mechanism different from that in the above embodiment is employed. This puncture depth adjusting mechanism includes a guide member 31C, a rotating body 6C, and a cover 7C.

  The guide member 31C is fixed to the main body 30C of the housing 3C so as not to rotate. The rotating body 6C is screwed into the guide member 31C, and is configured to move in the puncture or withdrawal direction N1, N2 by rotating around the puncture or withdrawal direction N1, N2. The rotating body 6C is provided with a flange portion 69C for allowing the lancet holder 4C to interfere. The cover 7C is fixed to the guide member 31C so as to be rotatable with respect to the guide member 31C and immovable in the puncture and retraction directions N1 and N2.

  In this configuration, since the distance between the end surface 71C of the cover 7C and the flange portion 69C of the rotating body 6C can be changed by rotating the rotating body 6C, the puncture depth can be adjusted by adjusting the position of the flange portion 69C. Can be adjusted.

  Next, a puncture apparatus according to a second embodiment of the present invention will be described with reference to FIGS. 15 to 18.

  The puncture device 1D shown in FIGS. 15 to 17 is configured to adjust the puncture depth using a cam mechanism 8D, and includes a housing 3D, a lancet holder 4D, a displacement body 6D, and a cover 7D. is doing.

  The cam mechanism 8D has a first groove portion 80D, a second groove portion 81D, and an operating body 82D. The first groove 80D is provided through the housing 3D and is inclined with respect to the puncturing and retracting directions N1 and N2. The second groove portion 81D is provided in a non-penetrating manner in the displacement body 6D and is orthogonal to the puncturing and retracting directions N1, N2. The operating body 82D has a shaft portion 83D that can move in the first and second groove portions 80D and 81D.

  The housing 3D, the lancet holder 4D, and the cover 7D are basically the same in function although they are different from the first embodiment. That is, the lancet holder 4D is movable inside the housing 3D, and the lancet holder 4D moves in the puncturing direction N1, whereby the needle portion 21 of the lancet 2 pierces the skin. The movement of the lancet holder 4D in the puncturing direction N1 is stopped by interfering with the flange portion 37D of the housing 3D. However, the housing 3D is provided with the first groove 80D constituting the cam mechanism 8D as described above, which is different from the first embodiment.

  In the puncture device 1D, as shown in FIGS. 18A to 18C, the puncture depth can be adjusted by moving the operating body 82D in a direction orthogonal to the puncture and retraction directions N1 and N2. More specifically, when the operation body 82D is moved, the shaft portion 83D moves straight in the first and second groove portions 80D and 81D. At this time, since the first groove portion 80D is provided in an inclined shape, the shaft portion 83D moves the second groove portion 81D while moving the displacement body 6D in the puncturing or retracting directions N1, N2. Here, since the cover 7D moves integrally with the displacement body 6D, the position of the cover 7D with respect to the housing 3D changes as the displacement body 6D moves. Therefore, if the operating body 82D is moved to move the displacement body 6D, the cover 7D can be moved and the puncture depth can be adjusted.

1, 1B, 1C, 1D Puncture device 21 (lancet) needle (puncture element)
3, 3B, 3D Housing 30, 30C (Housing) Main body 31, 31C (Housing) Guide member 37 (Guide member) Inner flange (Step)
37D (housing) flange (step)
4,4C, 4D lancet holder (moving body)
6,6C Rotating body (displacement body)
6D Displacement body 64 (Rotating body) protrusion (one or more protrusions)
65A, 65B (rotating body) inclined projection (projection)
68 Scale (of rotating body) 69C Flange part 7 Cover 8D Cam mechanism 80D First groove part 81D (Cam mechanism) Second groove part 82D (Cam mechanism) Operating body Sk Skin N1 Puncture direction N2 Retraction direction

Claims (4)

A puncture device for moving the puncture element held in the housing in the puncture direction and piercing the puncture element into the skin, comprising a puncture depth adjusting mechanism for adjusting the puncture depth of the puncture element with respect to the skin In the provided puncture device,
The puncture depth adjusting mechanism uses a cam mechanism, and is capable of moving with respect to the housing in the puncture direction or a retracting direction opposite to the puncture direction, and the displacement body And a cover that moves integrally in the puncturing and retracting direction,
A puncture apparatus capable of adjusting a puncture depth, wherein the puncture element can be held with the cover removed from the housing. The cam mechanism is an operating body for moving the displacement body, and is provided with an operating body having a shaft portion, the housing and the displacement body, and a first and a first body for allowing the shaft portion to move. A second groove, and
The puncture device according to claim 1, wherein the puncture depth is adjustable by moving the shaft portion in the first and second groove portions to change the position of the displacement body with respect to the housing. .   The cover is detachable with respect to the displacement body, and is configured such that the position of the displacement body with respect to the housing is adjusted by applying a load to the displacement body with the cover removed. The puncture apparatus which can adjust the puncture depth of Claim 1 or 2.   The puncture apparatus according to any one of claims 1 to 3, wherein the cover is formed to be transparent or translucent so that the inside can be observed.

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