Corneal endothelium separation forceps
By designing corneal endothelial separation forceps, the problem of difficulty in separation of the corneal endothelial layer in traditional methods is solved, the complete separation and efficient utilization of the corneal endothelial layer are achieved, and the success rate of corneal transplant surgery is improved.
Patent Information
- Application Number
- CN202422071490.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-26
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-26
AI Technical Summary
Traditional methods are difficult to completely separate the endocortis of young people's corneal strata, and large bubble separation surgery has high technical requirements for the surgeon, which is prone to bubble uncertainty.
A corneal endothelial separation forceps are designed, including upper and lower clamps, with a preset angle and elastic element between the clamp and the operating rod, providing pre-tightening force through the screw and the adjusting nut to ensure stable corneal clamping and accurate insertion of the bubble needle.
The complete separation of the corneal endocortis is achieved, and the bubbles are concentrated in the predetermined space, which improves the corneal usage and the utilization rate of donor corneals, meeting most corneal transplant needs.
Smart Images
Figure CN223126743U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to medical devices, in particular to a corneal endothelium separating forceps. Background Art
[0002] Corneal diseases are the second leading cause of blindness after cataracts. There are about 5 million corneal disease patients in China, and about 100,000 new patients are added every year.
[0003] A considerable number of corneal disease patients have corneal endothelium lesions, mainly including corneal endotheliitis, bullous keratopathy, descemetocele, iridocorneal endothelial syndrome, anterior segment toxic syndrome, and corneal dystrophy, etc.
[0004] Corneal endothelial transplantation is an important surgical method in current corneal transplantation surgery.
[0005] The cornea is a structure that is thin in the middle and thick at the edge. The thickness of the central region is about 550μm, and the thickness of the edge is about 900 - 1000μm. Corneal endothelial transplantation only transplants the innermost layer of the cornea, which is about 15μm thick. The thickness is extremely thin, and it is very difficult to separate it from the cornea. The traditional separation method is only applicable to the corneas of donors over 50 years old because the corneal endothelium of young people is tightly attached to the corneal stromal layer and cannot be completely separated. The development of the single-bubble separation surgery has removed the age limit for donors in corneal endothelial transplantation surgery.
[0006] Because the traditional large-bubble separation technique has no restraint on the cornea, single bubbles or double bubbles may be generated during the operation, which requires a high level of skill from the operator. Summary of the Invention
[0007] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a corneal endothelium separating forceps.
[0008] In order to achieve the above purpose, the utility model adopts the following technical scheme: A corneal endothelium separating forceps, comprising:
[0009] An upper clip, the upper clip includes an upper clamping member, an upper operating rod, and a first elastic element. One end of the upper clamping member is fixedly connected to one end of the upper operating rod, and the other end of the upper operating rod is fixedly connected to one end of the first elastic element;
[0010] Lower clamp, the lower clamp includes a lower clamping member, a lower operating rod, and a second elastic element. One end of the lower clamping member is fixedly connected to one end of the lower operating rod, and the other end of the lower operating rod is fixedly connected to the second elastic element; the other end of the first elastic element is fixedly connected to the other end of the second elastic element, so that when the first elastic element and the second elastic element approach each other or one of them approaches the other, there is an elastic force; the upper clamping member has a first axis, the upper operating rod has a second axis, and there is a preset angle between the extension line of the first axis of the upper clamping member and the extension line of the second axis of the upper operating rod, so that there is a preset angle between the upper clamping member and the upper operating rod; the lower clamping member has a third axis, the lower operating rod has a fourth axis, and there is a preset angle between the extension line of the third axis of the lower clamping member and the extension line of the fourth axis of the lower operating rod, so that there is a preset angle between the lower clamping member and the lower operating rod.
[0011] Further, the upper clamping member deflects relative to the upper operating rod, the lower clamping member deflects relative to the lower operating rod, and the deflection direction of the upper clamping member relative to the upper operating rod is the same as the deflection direction of the lower clamping member relative to the lower operating rod, so that a clamping space is formed between the upper clamping member and the lower clamping member.
[0012] Further, the angle between the extension line of the first axis of the upper clamping member and the extension line of the second axis of the upper operating rod is 25°, and the angle between the extension line of the third axis of the lower clamping member and the extension line of the fourth axis of the lower operating rod is 25°.
[0013] Further, it further includes a screw rod and an adjusting nut. The screw rod is provided with an external thread, and the adjusting nut has an internal thread adapted to the screw rod; one end of the screw rod is fixedly connected to the upper operating rod of the upper clamp, a first through hole is provided on the lower operating rod of the lower clamp, the first through hole penetrates the lower operating rod, the other end of the screw rod passes through the first through hole, and the adjusting nut and the other end of the screw rod are screwed in, so that the adjusting nut and the screw rod are threadedly connected. By rotating the adjusting nut, when the adjusting nut presses the lower operating rod against the upper operating rod, the upper clamping member and the lower clamping member approach each other.
[0014] Further, the upper clamping member has a first fitting through hole, and the lower clamping member has a second fitting through hole. The first fitting through hole penetrates the upper clamping member, and the second fitting through hole penetrates the lower clamping member.
[0015] Further, an annular protrusion protrudes from the inner wall of the second adaptation through hole of the lower clamping member towards the first adaptation through hole of the upper clamping member; an annular concave surface facing the lower clamping member is provided on the inner wall of the first adaptation through hole of the upper clamping member, and the annular protrusion and the annular concave surface cooperate to stably clamp the donor cornea between the upper clamping member and the lower clamping member.
[0016] Further, a through groove is provided on the upper clamping member, and the through groove radially penetrates the upper clamping member from the outer surface of the upper clamping member, so that the through groove communicates with the first adaptation through hole of the upper clamping member; the cross section of the upper clamping member is circular, and the cross section of the lower clamping member is circular.
[0017] Further, a first bending transition section and a second bending transition section are further included. One side of the first bending transition section is fixedly connected to the upper clamping member, and the first bending transition section is fixedly connected to the upper operating rod. The first bending transition section has a bend with a preset radian, so that a preset included angle is formed between the upper clamping member and the upper operating rod; one side of the second bending transition section is fixedly connected to the lower clamping member, and the other side of the second bending transition section is fixedly connected to the lower operating rod. The second bending transition section has a bend with a preset radian, so that a preset included angle is formed between the lower clamping member and the lower operating rod.
[0018] Further, a preset number of second through holes are provided on the upper operating rod, and the second through holes penetrate the upper operating rod; a preset number of third through holes are provided on the lower operating rod, and the third through holes penetrate the lower operating rod.
[0019] Further, anti-slip teeth are provided on the circumferential outer surface of the adjusting nut to prevent slipping when the adjusting nut is rotated.
[0020] The beneficial effects of the present application are as follows: The present application provides a corneal endothelial separation forceps. Due to being clamped by the corneal endothelial separation forceps, air bubbles will not randomly generate at any position of the cornea, but can only enter the space with a diameter of about 9 mm in the middle of the corneal endothelial separation forceps, forming a single air bubble with a clear edge. The separated corneal epithelium layer is complete and undamaged, improving the utilization rate of the cornea. The diameter of the corneal epithelium layer separated by the air bubble is about 9 mm, which is larger than the size required by most recipients, meeting the needs of most corneal transplantation surgeries. A slope of 25° is designed between the upper and lower clips, which coincides with the natural angle of the cornea, can lock the donor cornea without deformation, ensuring the stability of the donor cornea during the entire operation, thus ensuring the requirement of only collecting the central area of the donor corneal epithelium. The locking nut provides a pre-tightening force to ensure that the cornea does not move during the operation. Marks are engraved on the edge of the upper clip of the corneal endothelial separation forceps corresponding to the position of the lower clip groove, ensuring that after clamping the cornea, the large air bubble needle can correctly penetrate between the corneal epithelium layer and the stroma layer through the lower clip groove. Because the corneal endothelial separation forceps are used, the utilization rate of the donor cornea is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 FIG. is a schematic structural diagram of a corneal endothelial separation forceps provided by the present utility model.
[0022] Figure 2 FIG. is another schematic structural diagram of a corneal endothelial separation forceps provided by the present utility model.
[0023] Figure 3 is Figure 2 a partial enlarged view of a corneal endothelial separation forceps shown in
[0024] Figure 4 is Figure 1 a partial enlarged view of a corneal endothelial separation forceps shown in DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] The present application will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid the core part of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the descriptions in the specification and general technical knowledge in the art.
[0026] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operation steps involved in each embodiment can also be reordered or adjusted in a manner obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a certain embodiment and do not mean to be the necessary composition and / or order.
[0027] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any sequential or technical meaning. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling).
[0028] Please refer to Figures 1-4 , this application provides a corneal endothelium separating forceps (hereinafter referred to as separating forceps), and the separating forceps includes:
[0029] an upper clamp 1, the upper clamp 1 includes an upper clamping member 11, an upper operating rod 12, and a first elastic element 13. One end of the upper clamping member 11 is fixedly connected to one end of the upper operating rod 12, and the other end of the upper operating rod 12 is fixedly connected to one end of the first elastic element 13;
[0030] a lower clamp 2, the lower clamp 2 includes a lower clamping member 21, a lower operating rod 22, and a second elastic element 23. One end of the lower clamping member 21 is fixedly connected to one end of the lower operating rod 22, and the other end of the lower operating rod 22 is fixedly connected to the second elastic element 23; wherein, the other end of the first elastic element 13 is fixedly connected to the other end of the second elastic element 23, so that when the first elastic element 13 and the second elastic element 23 approach each other or one of them approaches the other, there is an elastic force; the upper clamping member 11 has a first axis 110, the upper operating rod 12 has a second axis 120, and there is a preset included angle between the extension line of the first axis 110 of the upper clamping member 11 and the extension line of the second axis 120 of the upper operating rod 12, so that there is a preset included angle between the upper clamping member 11 and the upper operating rod 12; the lower clamping member 21 has a third axis 210, the lower operating rod 22 has a fourth axis 220, and there is a preset included angle between the extension line of the third axis 210 of the lower clamping member 21 and the extension line of the fourth axis 220 of the lower operating rod 22, so that there is a preset included angle between the lower clamping member 21 and the lower operating rod 22.
[0031] In an embodiment of the present application, the upper clamping member 11 deflects relative to the upper operating rod 12, and the lower clamping member 21 deflects relative to the lower operating rod 22. The deflection direction of the upper clamping member 11 relative to the upper operating rod 12 is the same as the deflection direction of the lower clamping member 21 relative to the lower operating rod 22, so that a clamping space is formed between the upper clamping member 11 and the lower clamping member 21.
[0032] In an embodiment of the present application, the included angle between the extension line of the first axis 110 of the upper clamping member 11 and the extension line of the second axis 120 of the upper operating rod 12 is 25°, and the included angle between the extension line of the third axis 210 of the lower clamping member 21 and the extension line of the fourth axis 220 of the lower operating rod 22 is 25°.
[0033] In an embodiment of the present application, the separating forceps further includes a screw 3 and a tightening nut 4. The screw 3 is provided with an external thread, and the tightening nut 4 has an internal thread adapted to the screw 3. One end of the screw 3 is fixedly connected to the upper operating rod 12 of the upper clamp 1. A first through hole 221 is provided on the lower operating rod 22 of the lower clamp 2. The first through hole 221 penetrates through the lower operating rod 22. The other end of the screw 3 passes through the first through hole 221, and the tightening nut 4 and the other end of the screw 3 are screwed in, so that the tightening nut 4 and the screw 3 are threadedly connected. By rotating the tightening nut 4, when the tightening nut 4 presses the lower operating rod 22 against the upper operating rod 12, the upper clamping member 11 and the lower clamping member 21 approach each other.
[0034] In an embodiment of the present application, the upper clamping member 11 has a first fitting through hole 111, and the lower clamping member 21 has a second fitting through hole 211. The first fitting through hole 111 penetrates through the upper clamping member 11, and the second fitting through hole 211 penetrates through the lower clamping member 21.
[0035] In an embodiment of the present application, an annular protrusion 212 protruding from the inner wall of the second fitting through hole 211 of the lower clamping member 21 towards the first fitting through hole 111 of the upper clamping member 11 is provided. An annular concave surface 112 facing the lower clamping member 21 is provided on the inner wall of the first fitting through hole 111 of the upper clamping member 11. The annular protrusion 212 and the annular concave surface 112 cooperate to stably clamp the donor cornea between the upper clamping member 11 and the lower clamping member 21.
[0036] In an embodiment of the present application, a through groove 113 is provided on the upper clamping member 11. The through groove 113 radially penetrates the upper clamping member 11 from the outer surface of the upper clamping member 11, so that the through groove 113 communicates with the first mating through hole 111 of the upper clamping member 11; the cross-section of the upper clamping member 11 is circular, and the cross-section of the lower clamping member 21 is circular.
[0037] In an embodiment of the present application, the separating forceps further includes a first bending transition section 14 and a second bending transition section 24. On the one hand, the first bending transition section 14 is fixedly connected to the upper clamping member 11, and the first bending transition section 14 is fixedly connected to the upper operating rod 12. The first bending transition section 14 has a bend with a preset radian, so that a preset included angle is formed between the upper clamping member 11 and the upper operating rod 12; on the one hand, the second bending transition section 24 is fixedly connected to the lower clamping member 21, and on the other hand, the second bending transition section 24 is fixedly connected to the lower operating rod 22. The second bending transition section 24 has a bend with a preset radian, so that a preset included angle is formed between the lower clamping member 21 and the lower operating rod 22.
[0038] In an embodiment of the present application, a preset number of second through holes 121 are provided on the upper operating rod 12, and the second through holes 121 penetrate the upper operating rod 12; a preset number of third through holes 222 are provided on the lower operating rod 22, and the third through holes 222 penetrate the lower operating rod 22.
[0039] In an embodiment of the present application, anti-slip teeth 40 are provided on the circumferential outer surface of the adjusting nut 4 to prevent slipping when the adjusting nut 4 is rotated.
[0040] The working principle of the present application is as follows: The present application provides a corneal endothelium separating forceps. The upper clamping member and the lower clamping member of the separating forceps clamp the donor cornea, and at the same time, the corneal endothelium of the donor is facing upwards. The air bubble needle passes through the through groove on the upper clamping member and inserts at the corneal marking position, and air bubbles are injected between the stromal layer and the inner corneal layer. As the air bubbles enter, the corneal epithelium and the stromal layer are quickly separated.
[0041] Due to being clamped by the corneal endothelium separating forceps, air bubbles will not randomly generate at any position of the cornea, and can only enter the space with a diameter of about 9 mm in the middle of the corneal endothelium separating forceps, forming a single air bubble with a clear edge. The separated corneal epithelium is complete and undamaged, improving the utilization rate of the cornea.
[0042] The diameter of the corneal epithelium separated by the air bubbles is about 9 mm, which is larger than the size required by most recipients, meeting the needs of most corneal transplantation surgeries.
[0043] A 25° slope is designed between the upper and lower clamps, which coincides with the natural angle of the cornea, can lock the donor cornea without deformation, ensuring the stability of the donor cornea during the whole operation, thus meeting the requirement of only collecting the central area of the donor corneal epithelium. The lock nut provides a pre-tightening force to ensure that the cornea does not move during the operation.
[0044] Markings are engraved on the edge of the upper clamp of the corneal endothelial separation forceps corresponding to the position of the lower clamp groove, ensuring that after clamping the cornea, the air bubble needle can correctly penetrate between the corneal epithelium and stroma through the lower clamp groove.
[0045] Because the corneal endothelial separation forceps are used, the utilization rate of the donor cornea is greatly improved.
[0046] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims
1. A corneal endothelium separating forceps, characterized in that, Comprising: An upper clamp, the upper clamp includes an upper clamping member, an upper operating rod, and a first elastic element. One end of the upper clamping member is fixedly connected to one end of the upper operating rod, and the other end of the upper operating rod is fixedly connected to one end of the first elastic element; A lower clamp, the lower clamp includes a lower clamping member, a lower operating rod, and a second elastic element. One end of the lower clamping member is fixedly connected to one end of the lower operating rod, and the other end of the lower operating rod is fixedly connected to the second elastic element; the other end of the first elastic element is fixedly connected to the other end of the second elastic element, so that when the first elastic element and the second elastic element approach each other or one of them approaches the other, there is an elastic force; the upper clamping member has a first axis, the upper operating rod has a second axis, and there is a preset angle between the extension line of the first axis of the upper clamping member and the extension line of the second axis of the upper operating rod, so that there is a preset angle between the upper clamping member and the upper operating rod; the lower clamping member has a third axis, the lower operating rod has a fourth axis, and there is a preset angle between the extension line of the third axis of the lower clamping member and the extension line of the fourth axis of the lower operating rod, so that there is a preset angle between the lower clamping member and the lower operating rod.
2. The corneal endothelium separating forceps according to claim 1, wherein The upper clamping member deflects relative to the upper operating rod, the lower clamping member deflects relative to the lower operating rod, and the deflection direction of the upper clamping member relative to the upper operating rod is the same as the deflection direction of the lower clamping member relative to the lower operating rod, so that a clamping space is formed between the upper clamping member and the lower clamping member.
3. The corneal endothelium separating forceps according to claim 1, characterized in that, The angle between the extension line of the first axis of the upper clamping member and the extension line of the second axis of the upper operating rod is 25°, and the angle between the extension line of the third axis of the lower clamping member and the extension line of the fourth axis of the lower operating rod is 25°.
4. The corneal endothelium separating forceps according to claim 1, characterized in that, It further includes a screw rod and an adjusting nut. The screw rod is provided with an external thread, and the adjusting nut has an internal thread adapted to the screw rod; one end of the screw rod is fixedly connected to the upper operating rod of the upper clamp, a first through hole is provided on the lower operating rod of the lower clamp, the first through hole penetrates the lower operating rod, the other end of the screw rod passes through the first through hole, and the adjusting nut and the other end of the screw rod are screwed in, so that the adjusting nut and the screw rod are threadedly connected. By rotating the adjusting nut, when the adjusting nut squeezes the lower operating rod against the upper operating rod, the upper clamping member and the lower clamping member approach each other.
5. The corneal endothelium separating forceps according to claim 4, characterized in that, The upper clamping member has a first fitting through hole, and the lower clamping member has a second fitting through hole. The first fitting through hole penetrates the upper clamping member, and the second fitting through hole penetrates the lower clamping member.
6. The corneal endothelium separating forceps according to claim 5, characterized in that, There is a circular protrusion on the inner wall of the second fitting through hole of the lower clamping member protruding towards the first fitting through hole of the upper clamping member; there is a circular concave surface facing the lower clamping member on the inner wall of the first fitting through hole of the upper clamping member. The circular protrusion and the circular concave surface cooperate to stably clamp the donor cornea between the upper clamping member and the lower clamping member.
7. The corneal endothelial separation forceps according to claim 6, characterized in that, A through groove is provided on the upper clamping member, and the through groove radially penetrates the upper clamping member from the outer surface of the upper clamping member, so that the through groove communicates with the first mating through hole of the upper clamping member; the cross section of the upper clamping member is circular, and the cross section of the lower clamping member is circular.
8. The corneal endothelium separating forceps according to claim 1, characterized in that, It further includes a first bending transition section and a second bending transition section. On the one hand, the first bending transition section is fixedly connected to the upper clamping member, and on the other hand, the first bending transition section is fixedly connected to the upper operating rod. The first bending transition section has a bend with a preset radian, so that a preset included angle is formed between the upper clamping member and the upper operating rod; on the one hand, the second bending transition section is fixedly connected to the lower clamping member, and on the other hand, the second bending transition section is fixedly connected to the lower operating rod. The second bending transition section has a bend with a preset radian, so that a preset included angle is formed between the lower clamping member and the lower operating rod.
9. The corneal endothelium separating forceps according to claim 1, characterized in that, A preset number of second through holes are provided on the upper operating rod, and the second through holes penetrate the upper operating rod; a preset number of third through holes are provided on the lower operating rod, and the third through holes penetrate the lower operating rod.
10. The corneal endothelium separating forceps according to claim 4, wherein, Anti-slip teeth are provided on the circumferential outer surface of the adjusting nut to prevent slipping when the adjusting nut is rotated.