CN114224602A - Cataract treatment device - Google Patents
Cataract treatment device Download PDFInfo
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- CN114224602A CN114224602A CN202111630495.2A CN202111630495A CN114224602A CN 114224602 A CN114224602 A CN 114224602A CN 202111630495 A CN202111630495 A CN 202111630495A CN 114224602 A CN114224602 A CN 114224602A
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- 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
- A61F9/007—Methods or devices for eye surgery
- A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
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Abstract
The invention relates to the field of medical equipment, and discloses a cataract treatment device, which comprises a light source mechanism, a light splitting mechanism, a supporting mechanism and at least one light emitting mechanism, wherein the light source mechanism is used for emitting light; the input end of the light splitting mechanism is connected with the light source mechanism, the light splitting mechanism is provided with at least one output end, and the output end of the light splitting mechanism is connected with the corresponding light emitting mechanism; the light-emitting mechanism is arranged on the supporting mechanism, and the included angle between the emergent light emitted by the light-emitting mechanism and the visual axis reaches a preset angle. The invention can solve the technical problem that the energy which is vertically incident to the eyeball and correspondingly transmitted to the macular area of the retina is too concentrated, so that the macular area is burnt.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a cataract treatment device.
Background
Cataract is a common blinding eye disease, and due to some reasons, the lens is turbid, the cataract is formed, and the retinal image is influenced, so that the vision is reduced, and people cannot see clearly.
At present, cataract treatment is to improve the vision of a patient by replacing an intraocular lens through surgical intervention. In the field of non-invasive treatment, there are disclosed techniques for cataract treatment using direct light energy. During treatment, the treatment light is incident perpendicular to the surface of the pupil of the human eye and directly irradiates the center of the crystalline lens, so that the cataract pathological tissue on the crystalline lens absorbs the light energy. At this point, the light rays enter the pupil perpendicularly, nearly coinciding with the visual axis. According to the field of vision, the light which is vertically incident is transmitted to the retina and is basically concentrated in the macular area, and the macular area is the most concentrated area of the cone cells and is the most important part of the vision. If the macular area is damaged by visual cells, the visual field is obviously damaged. For example, in daily life, after the eyes are irradiated by strong light, black plaques similar to the shape of the light source can be seen in the visual field, because the cone cells in the area are directly irradiated by the strong light, and the supersaturation of the light sensing capacity is caused as a protection mechanism.
Because the degree of cataract is different, for patients with mild cataract or slowly-reduced cataract, the blocking degree of cataract tissues is lower, and the therapeutic light can be more transmitted to the macular area of the retina, thereby generating great potential threat to the vision of the patients. Especially, with a long continuous irradiation, optic nerve cell burn may occur, resulting in permanent visual impairment.
In conclusion, in the existing cataract phototherapy technology, therapeutic light is vertically incident on an eyeball, and energy transmitted to a macular area of retina is too concentrated, so that the macular area is burnt.
Disclosure of Invention
The embodiment of the invention provides a cataract treatment device, which aims to solve the technical problem that the energy transmitted to a macular area of retina is too concentrated and the macular area is burnt when light is vertically incident to an eyeball.
In order to solve the above technical problem, an embodiment of the present invention provides a cataract therapy device, including a light source mechanism, a light splitting mechanism, a supporting mechanism, and at least one light emitting mechanism, where the light source mechanism is used for emitting light;
the input end of the light splitting mechanism is connected with the light source mechanism, the light splitting mechanism is provided with at least one output end, and the output end of the light splitting mechanism is connected with the corresponding light emitting mechanism;
the light-emitting mechanism is arranged on the supporting mechanism, and the included angle between the emergent light emitted by the light-emitting mechanism and the visual axis reaches a preset angle.
Preferably, the outgoing light ray emitted by at least one of the light-emitting mechanisms intersects with the visual axis at a point.
Preferably, the beam splitting mechanism is provided with three output ends, the three output ends of the beam splitting mechanism are respectively connected with the light emitting mechanisms, the light emitting mechanisms are respectively arranged on the supporting mechanism, and the light emitting mechanisms are circumferentially distributed on the periphery of the visual axis.
Preferably, the input end of the light splitting mechanism is connected with the light source mechanism through a total output optical fiber, and the output end of the light splitting mechanism is connected with the light emitting mechanism through a branch optical fiber.
Preferably, the light-emitting mechanism includes a fiber tail and a collimating lens, the fiber tail is the end of the branch optical fiber far away from the light-splitting mechanism, the fiber tail is arranged in the shell of the collimating lens, and the light-emitting mechanism emits the emergent light through the collimating lens.
Preferably, the supporting mechanism is provided with a moving assembly, the moving assembly is connected with the light emitting mechanism, and the moving assembly is used for driving the light emitting mechanism to move, so that the included angle between the emergent light and the visual axis reaches a preset angle.
Preferably, the supporting mechanism further comprises a control module, and the control module is used for controlling the moving assembly to drive the light emitting mechanism to move.
Preferably, the preset angle is 5-55 °.
The embodiment of the invention also provides a cataract treatment device, which comprises a supporting mechanism, at least one light source mechanism and at least one light-emitting mechanism, wherein the light source mechanism is used for emitting light, the output end of the light source mechanism is connected with the corresponding light-emitting mechanism, the light-emitting mechanism is arranged on the supporting mechanism, the included angle between the emergent light emitted by the light-emitting mechanism and the visual axis reaches a preset angle, and the emergent light emitted by the at least one light-emitting mechanism and the visual axis are crossed at one point.
Preferably, the light source mechanism is equipped with threely, light-emitting mechanism is equipped with threely, and is three light source mechanism's output respectively with threely the light-emitting mechanism is connected, and is three the light-emitting mechanism set up respectively in supporting mechanism is last, and is three the light-emitting mechanism encircles and distributes in all sides of visual axis.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the emergent light emitted by the light-emitting mechanism and the visual axis reach the preset angle, so that the emergent light enters the eyeball to irradiate the crystalline lens and is finally transmitted to the retina, thereby avoiding the macular area on the retina. Meanwhile, when a plurality of light emitting mechanisms are arranged, light emitted by the light source mechanism can be uniformly dispersed to each light emitting mechanism and then transmitted to the retina, so that the energy of emergent light is more dispersed, and the risk of burning a macular area can be further reduced. In another embodiment, when a plurality of light source mechanisms are used, the emergent light energy of each light source mechanism can be set according to the finally required light energy, and the risk of burning the macular area can be further reduced.
Drawings
FIG. 1 is a schematic view of a cataract treatment device provided in a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the position distribution of the light extraction mechanism provided in a preferred embodiment of the present invention;
FIG. 3 is a view of a human eye field;
FIG. 4 is a horizontal optic nerve cell distribution curve;
FIG. 5 is a schematic view illustrating the orientation of the right eye view;
FIG. 6 is a schematic diagram of the position distribution of the light-emitting mechanism provided in another preferred embodiment of the present invention;
fig. 7 is a schematic view of a cataract treatment device provided in another preferred embodiment of the present invention;
fig. 8 is a schematic structural view of a support mechanism in a preferred embodiment of the present invention.
Wherein the reference numbers are as follows: 1. a light source mechanism; 11. a total output optical fiber; 2. a light splitting mechanism; 21. a branch optical fiber; 3. a support mechanism; 31. a support arm; 32. a mounting seat; 4. a light emitting mechanism; 5. the eyeball.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a first embodiment of the present invention provides a cataract therapy apparatus, which includes a light source mechanism 1, a light splitting mechanism 2, a support mechanism 3, and at least one light emitting mechanism 4, wherein the light source mechanism 1 is configured to emit light, an input end of the light splitting mechanism 2 is connected to the light source mechanism 1, the light splitting mechanism 2 is provided with at least one output end, an output end of the light splitting mechanism 2 is connected to a corresponding light emitting mechanism 4, the light emitting mechanism 4 is disposed on the support mechanism 3, and an included angle between an emergent light emitted by the light emitting mechanism 4 and a visual axis reaches a preset angle.
In this embodiment, the number of the light emitting mechanisms 4 can be set as required, as long as it is satisfied that the emergent light emitted by at least one of the light emitting mechanisms 4 intersects with the visual axis at a point.
Referring to fig. 1 and 2, in an embodiment, there are three light emitting mechanisms 4, the corresponding light splitting mechanism 2 has three output ends, the three output ends of the light splitting mechanism 2 are respectively connected to the three light emitting mechanisms 4, the three light emitting mechanisms 4 are respectively disposed on the supporting mechanism 3, and the three light emitting mechanisms 4 are circumferentially distributed around the visual axis (shown by the dotted line in the figure).
In addition, according to the visual field concept, when a person gazes at a point in the middle, the perception of the periphery of the gazing direction is limited. The principle is that the visual field corresponds to the optic nerve cells on the retina, the visual perception capability is not available at the position without the distribution of the optic nerve cells, the optic nerve cells are not uniformly distributed at the area with the distribution of the optic nerve cells on the retina, the optic nerve cells are more abundant at the position close to the macular area, and the optic nerve cells are more sparse at the position close to the edge. In other words, the visual perception is highest in the macular area and decreases toward the periphery.
Referring to fig. 3, it can be known from the visual field diagram of human eyes that the perception of human vision can reach a level in the direction of the temporal side of human eyes. Whereas the nasal side, due to the complementary eyes, has a perception angle of only about 50. The perception level here is only that which is perceived by humans, not that which is clearly visible, and in fact the optic nerve cells outside of 20 ° around the visual axis have been greatly reduced. As shown in fig. 4, the distribution of optic nerve cells on the retina is in the horizontal direction, the blue line is cone cells, and the red line is rod cells. Therefore, the preset angle is set to be 5-55 degrees, the macular area can be avoided when the included angle between the emergent ray and the visual axis is more than 5 degrees, and the risk of burning the macular area is further reduced. Preferably, the preset angle is set to 50-55 deg., at which the best therapeutic effect can be achieved.
Further, as shown in fig. 5, in the view of the right eye of the human, the area enclosed by the middle dotted line represents the range of the visual perception capability in front of the human eye. The eye vision field image is taken as the azimuth reference, the three light emitting mechanisms 4 are respectively arranged at the 12-point azimuth, the 6-point azimuth and the nose side azimuth (corresponding to the nose side of the affected eye) of the vision field, at the moment, the core vision area can be avoided, and the risk of burn is reduced. Of course, in other embodiments, the light emitting mechanisms 4 may be set to four, five, etc., and in this case, only three light emitting mechanisms 4 of the 12-point position, the 6-point position, and the nose side position of the visual field need to be selected from other appropriate positions for increasing.
Referring to fig. 6, in another embodiment, one light emitting mechanism 4 is provided, and the corresponding light splitting mechanism 2 is provided with an output end, and the output end of the light splitting mechanism 2 is connected with the light emitting mechanism 4. In order to achieve better treatment effect, the light emitting mechanism 4 is arranged on the supporting mechanism 3 at a position corresponding to the nose side position on the human eye visual field diagram.
In another embodiment, there are two light emitting mechanisms 4, the light splitting mechanism 2 has two output ends, and the two output ends of the light splitting mechanism 2 are connected to the two light emitting mechanisms 4. In order to achieve better treatment effect, the two light emitting mechanisms 4 are arranged on the supporting mechanism 3 at positions corresponding to the positions of the nose side and 12 points on the human eye visual field diagram.
For ease of understanding, three light emitting mechanisms 4 are described as an example.
For better consistency and safety, as shown in fig. 7, one light source mechanism 1 is provided, and the light source mechanism 1 is used for emitting light. The light splitting mechanism 2 can adopt an optical fiber light splitter, the optical fiber light splitter divides the light emitted by the light source mechanism 1 into three paths, the energy of the three paths of light is consistent, the stability and the limitation of the total energy are ensured, and therefore a patient cannot receive the irradiation of excessive light.
Referring to fig. 1, in order to facilitate the angle adjustment of the light emitting mechanism 4, the input end of the light splitting mechanism 2 is connected to the light source mechanism 1 through the total output optical fiber 11, and the output end of the light splitting mechanism 2 is connected to the light emitting mechanism 4 through the branch optical fiber 21. The light emitting mechanism 4 comprises an optical fiber tail and a collimating lens, the optical fiber tail is one end of the branch optical fiber 21 far away from the light splitting mechanism 2, the optical fiber tail is arranged in a shell of the collimating lens, and the light emitting mechanism 4 emits emergent light through the collimating lens. After optical fiber light splitting is adopted, the light emitting mechanism 4 consists of an optical fiber tail and a collimating lens, and the size and the quality of the whole device can be effectively reduced.
Exemplarily, in an embodiment corresponding to three light-exiting mechanisms 4, referring to fig. 8, the support mechanism 3 includes three support arms 31, first ends of the three support arms 31 are connected to each other, and a distance between a second end of a middle one of the support arms 31 and second ends of two outer support arms 31 is equal. In one embodiment, the outer two support arms 31 may be integrally formed, and the middle support arm 31 is vertically mounted on the middle point of the integrally formed support arm 31. Of course, the support mechanism 3 may have other structures as long as it can support the three light emitting mechanisms 4. In addition, when the number of the light emitting mechanisms 4 is changed, the number of the support arms 31 is changed accordingly.
Furthermore, a moving assembly is arranged on the supporting mechanism 3 and connected with the light emitting mechanism 4, and the moving assembly is used for driving the light emitting mechanism 4 to move so that the included angle between the emergent light and the visual axis reaches a preset angle.
In a specific implementation, the moving assembly includes a mounting seat 32, the mounting seat 32 is disposed on the supporting arm 31, and the fiber tail and the collimating lens are accommodated in the mounting seat 32. The mount pad 32 is movably arranged on the support arm 31, and when the mount pad 32 moves, the mount pad 32 drives the fiber tail of the optical fiber and the collimating lens to move, so that the position of the light emitting mechanism 4 is adjusted, and the angle of emergent light is adjusted.
Preferably, the supporting mechanism 3 further includes a control module and a motor, and the control module is configured to control the motor to move, so that the motor drives the mounting base 32 and the light emitting mechanism 4 to move. When the light emitting mechanism is used, the required emergent light angle is input into the control module, the control module converts the angle into the distance which needs to be moved by the mounting seat 32 and the light emitting mechanism 4, and then the motor is controlled to rotate, so that the light emitting mechanism 4 is moved to the specified position.
It should be noted that, in order to make the included angle between the emergent ray and the visual axis reach the preset angle, the light-emitting mechanism 4 needs to have the characteristic of being flexibly adjustable. In the traditional optical design scheme, light rays are horizontally and vertically transmitted, a steering system is 180 degrees or 90 degrees, and if the deflection of 10 degrees is required, the most direct scheme is to use a reflector of 10 degrees. However, if the light emitting means 4 are all mirrors, the whole treatment device will be too bulky, resulting in too large a mass of the device for production and installation. In addition, when light is used to treat cataract, the total energy of the irradiation of light has a safety upper limit. The output energy fluctuation of the multi-path light-emitting mechanism 4 is large, and the final total energy of superposition may exceed the safety upper limit.
In this embodiment, the light emitted from the light source mechanism 1 is guided out through one total output optical fiber 11, and then is equally divided into three output lights by the optical fiber splitting box, and the three output lights reach the light emitting mechanism 4 through the branch optical fiber 21, and finally irradiate to the eyes through the collimating lens. Wherein, the total energy of multiplexed output light can not exceed the total output energy of light source mechanism 1, just can ensure the safety of eyes through guaranteeing the total output energy of light source mechanism 1. Moreover, the output light split by the optical fiber splitting box has consistent power, and can be equally split into tens of paths of output light, which is beneficial to the flexible arrangement of the emergent light, thereby conveniently increasing or reducing the emergent light.
In summary, in the embodiment of the present invention, the outgoing light emitted by the light-emitting mechanism 4 and the visual axis reach a predetermined angle, so that the outgoing light enters the eyeball 5 to irradiate the crystalline lens, and is finally transmitted to the retina, thereby avoiding the macular area on the retina. Meanwhile, when a plurality of light-emitting mechanisms 4 are arranged, the light emitted by the light source mechanism 1 can be uniformly dispersed to each light-emitting mechanism 4 and then transmitted to the retina, so that the energy of the emergent light is more dispersed, and the risk of burning a macular area can be further reduced.
A second embodiment of the present invention provides a cataract therapy apparatus, which includes a support mechanism, at least one light source mechanism and at least one light emitting mechanism, wherein the light source mechanism is used for emitting light, an output end of the light source mechanism is connected to the corresponding light emitting mechanism, the light emitting mechanism is disposed on the support mechanism, an included angle between an emergent light emitted by the light emitting mechanism and a visual axis reaches a preset angle, and the emergent light emitted by the at least one light emitting mechanism and the visual axis intersect at a point.
The present embodiment is different from the first embodiment in that: in the embodiment, at least one light source mechanism is arranged, and a light splitting mechanism is not required. The output ends of the light source mechanisms correspond to the light emitting mechanisms one by one, and when a plurality of light emitting mechanisms are needed, the number of the light source mechanisms is correspondingly increased.
For example, when the light emitting mechanisms are three, the light source mechanisms are correspondingly three, the output ends of the three light source mechanisms are respectively connected with the three light emitting mechanisms, the three light emitting mechanisms are respectively arranged on the supporting mechanism, and the three light emitting mechanisms are circumferentially distributed on the periphery of the visual axis. The eye vision field image is taken as the azimuth reference, the three light emitting mechanisms are respectively arranged at the 12-point azimuth, the 6-point azimuth and the nose side azimuth (corresponding to the nose side of the affected eye) of the vision field, at the moment, the core vision area can be avoided, and the risk of burn is reduced. At this time, the finally required light energy can be evenly dispersed to the emergent light energy of each light source mechanism, and the risk of burning the macular area can be further reduced.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.
Claims (10)
1. The cataract treatment device is characterized by comprising a light source mechanism, a light splitting mechanism, a supporting mechanism and at least one light emitting mechanism, wherein the light source mechanism is used for emitting light;
the input end of the light splitting mechanism is connected with the light source mechanism, the light splitting mechanism is provided with at least one output end, and the output end of the light splitting mechanism is connected with the corresponding light emitting mechanism;
the light-emitting mechanism is arranged on the supporting mechanism, and the included angle between the emergent light emitted by the light-emitting mechanism and the visual axis reaches a preset angle.
2. The cataract treatment device of claim 1, wherein at least one of the light extraction mechanisms emits an exit ray that intersects the visual axis at a point.
3. The cataract treatment device of claim 1, wherein the light splitting mechanism has three output ends, the three output ends of the light splitting mechanism are respectively connected to the three light emitting mechanisms, the three light emitting mechanisms are respectively disposed on the supporting mechanism, and the three light emitting mechanisms are circumferentially distributed around the visual axis.
4. The cataract treatment device of claim 1, wherein the input end of the light-splitting mechanism is connected to the light source mechanism through a main output optical fiber, and the output end of the light-splitting mechanism is connected to the light-emitting mechanism through a branch optical fiber.
5. The cataract treatment device of claim 4, wherein the light exit mechanism includes a fiber tail and a collimating lens, the fiber tail is an end of the branch optical fiber away from the light splitting mechanism, the fiber tail is disposed in a housing of the collimating lens, and the light exit mechanism emits the emergent light through the collimating lens.
6. The device for treating cataract of claim 1, wherein the supporting mechanism is provided with a moving component, the moving component is connected to the light emitting mechanism, and the moving component is configured to drive the light emitting mechanism to move, so that an included angle between the emergent light and the visual axis reaches a preset angle.
7. The cataract treatment device of claim 6, wherein the support mechanism further comprises a control module, and the control module is configured to control the moving assembly to drive the light extraction mechanism to move.
8. The cataract treatment device of any one of claims 1-7, wherein the predetermined angle is between 5 ° and 55 °.
9. The utility model provides a cataract therapy device, its characterized in that includes supporting mechanism, at least one light source mechanism and at least one light-emitting mechanism, light source mechanism is used for sending light, light source mechanism's output with correspond light-emitting mechanism connects, light-emitting mechanism locates on the supporting mechanism, the emergent ray that light-emitting mechanism jetted out reaches preset angle, at least one with the contained angle of looking the axle emergent ray that light-emitting mechanism jetted out intersects in a bit with looking the axle.
10. The cataract treatment device of claim 9, wherein there are three light source mechanisms and three light emitting mechanisms, the output ends of the three light source mechanisms are respectively connected to the three light emitting mechanisms, the three light emitting mechanisms are respectively disposed on the supporting mechanism, and the three light emitting mechanisms are circumferentially distributed around the visual axis.
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| CN202111630495.2A CN114224602A (en) | 2021-12-28 | 2021-12-28 | Cataract treatment device |
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| CN202111630495.2A CN114224602A (en) | 2021-12-28 | 2021-12-28 | Cataract treatment device |
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