CN212592684U

CN212592684U - A Knife Making Knife for Endothelial Transplantation Donor

Info

Publication number: CN212592684U
Application number: CN202020786037.2U
Authority: CN
Inventors: 李贵刚
Original assignee: Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology
Current assignee: Tongji Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-02-26
Anticipated expiration: 2030-05-13

Abstract

The utility model relates to the technical field of medical instruments, in particular to a knife for making a donor for corneal endothelial transplantation. The knife for making donors for corneal endothelial transplantation of the present invention comprises a knife body, one end of the knife body is provided with an annular tubular knife edge, and the knife edge is protruded to many places along the contour line of the knife body and forms a plurality of intervals The marking ear of the knife body is provided with a handle at the other end of the knife body. Advantages: Reasonable structural design, simple and convenient operation and use, after cutting the tissue, the self-contained label can identify the front and back of the donor, and it will not cause damage to the endothelial cells of the donor tissue, which can save the operation time and improve the success rate of the operation.

Description

Corneal endothelium transplantation donor manufacturing knife

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a knife for manufacturing corneal endothelial graft donor.

Background

Corneal transplantation is an ophthalmic treatment method for improving vision or treating certain corneal diseases by replacing turbid corneal tissue with transparent and healthy donor corneal tissue to revitalize patients or control corneal lesions. Corneal graft surgery (DMEK) is a new surgical method in which a normal elastic membrane and an endothelial cell layer behind the cornea are used to replace the elastic membrane and the endothelial cell layer behind the diseased cornea. In this process, the corneal endothelial cells need to face the iris to function normally, and the surgery is successful. Therefore, it is very critical to distinguish the front and back of the elastic corneal endothelial donor after the cornea in the operation.

The currently clinically used corneal donor manufacturing tool is a vacuum negative pressure corneal trephine, and the existing corneal trephine cuts the corneal donor in a ring shape, so that various marks (S or F-shaped marks) are needed to be made on donor tissues to distinguish the positive side from the negative side when the donor tissues are manufactured for endothelium manufacturing, and the corneal endothelium tissues are damaged by various marks used by doctors and a longer operation time is needed. The method can shorten the operation time, retain more normal endothelial cells, and improve the success rate of the operation.

At present, medical staff generally adopt a staining marking method to distinguish the front side from the back side on donor tissues, but the staining method has the following defects: 1 as the operation time is prolonged, the staining marks of the donor tissues fade, which causes difficulty in observation during the operation; 2 the process of making the staining marker is prone to damage donor tissue endothelial cells, affecting the success rate of the surgery and adversely affecting the duration of the surgical effect (long-term effectiveness).

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a knife for making corneal endothelium transplantation donor, which effectively overcomes the defects of the prior art.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

the utility model provides a corneal endothelium transplantation operation donator preparation sword, including the cutter body, above-mentioned cutter body one end is equipped with annular tubulose cutting edge, and above-mentioned cutting edge sets up to its many places bulges all around along its contour line to form a plurality of spaced mark ears, above-mentioned cutter body other end is equipped with handheld portion.

The utility model has the advantages that: the tissue self-carried mark after cutting can be used for distinguishing the front and the back of a donor, does not cause endothelial cell damage of the donor tissue, can save the operation time and improve the operation success rate.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the cutter body is in a circular tube shape, a plurality of convex edge portions with arc-shaped cross sections are convexly arranged on the tube wall along the periphery of the cutter body, one end of the cutter body is processed into the cutting edge, and the cutting edge corresponding to the convex edge portions forms the marking lug.

The beneficial effects of adopting the further scheme are that the shape design is reasonable, and the processing is easy.

Further, the hand-held part is a handle detachably connected with the other end of the knife body.

The medical staff can hold the medical staff conveniently.

Further, the hand-held part is a strip-shaped plate-shaped structure vertical to the knife body, and the other end of the knife body is connected with the middle part of one side of the hand-held part.

Adopt the beneficial effect of above-mentioned further scheme to make things convenient for medical personnel to hold the both ends of handheld portion and carry out steady operation cutting.

Furthermore, the middle part of one side of the hand-held part is provided with an assembly groove matched with the other end of the cutter body, and the other end of the cutter body is embedded and fixed in the assembly groove.

The beneficial effect of adopting above-mentioned further scheme is that the two connect compactly, and overall structure is more firm.

Further, the number of the marking ears is three, and two of the marking ears are close to each other.

The beneficial effect of adopting the further scheme is that the medical staff can conveniently and rapidly find and determine the front and back surfaces of the corneal tissue.

Further, the cutter body is a metal alloy cutter body.

The beneficial effects of adopting above-mentioned further scheme are that accord with medical standard, structural strength is high.

Drawings

FIG. 1 is a schematic structural view of a donor-producing knife for corneal endothelial transplantation of the present invention;

FIG. 2 is a schematic structural view of a knife body of the corneal endothelial graft donor manufacturing knife of the present invention;

fig. 3 is a schematic structural view of the hand-held portion of the corneal endothelial graft donor scalpel of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. cutter body, 2, handheld portion, 11, cutting edge, 12, mark ear, 21, assembly groove.

Detailed Description

The principles and features of the present invention are described below, with the examples being given only for the purpose of illustration and not for the purpose of limiting the scope of the invention.

Example (b): as shown in fig. 1 to 3, the knife body of the donor for corneal endothelial transplantation of the present embodiment includes a knife body 1, one end of the knife body 1 is provided with a circular tubular cutting edge 11, the cutting edge 11 protrudes along the contour line to a plurality of positions around the cutting edge and forms a plurality of spaced marking lugs 12, and the other end of the knife body 1 is provided with a handle 2.

The operation process is as follows:

after the cornea donor is fixed, the medical staff holds the hand-held part 2, the blade 11 is attached to the surface of the cornea donor, the cornea tissue is cut off by pressing down, a plurality of cornea ear marks (mark ears 12) appear on the edge of the cut cornea tissue, and the front side and the back side of the cornea can be easily and quickly distinguished by marking the positions of the ears 12 and referring to the cutting directions of the knife body 1 and the blade 11.

In a preferred embodiment, the cutter body 1 is a circular tube, a plurality of convex ridges 13 having an arc-shaped cross-sectional shape are formed on a wall of the circular tube so as to protrude outward along a circumference of the circular tube, one end of the cutter body 1 is formed into the cutting edge 11, and the marking lug 12 is formed on the cutting edge 11 corresponding to the convex ridges 13.

In this embodiment, the cutter body 1 and the blade 11 are integrally formed, a plurality of protruding ridges 13 are formed on the cutter body 1 at first during machining, the positions of the protruding ridges 13 are optimized for easy distinguishing, and then the blade 11 is machined at one end of the cutter body 11, so that the shape design of the whole cutter body 1 is simple and reasonable, and the integral forming machining process is simple.

In a preferred embodiment, the handle 2 is a handle detachably connected to the other end of the cutter body 1.

In this embodiment, the connection of the handle to the other end of the cutter body 1 allows the cutter body 1 to be operated by pinching the handle to cut corneal tissue when a donor is prepared.

In a preferred embodiment, the handle 2 has a strip-shaped plate-like structure perpendicular to the blade body 1, and the other end of the blade body 1 is connected to a middle portion of the handle 2 on one side.

In this embodiment, the handle shape design is simple, and when the operation was cut the cornea tissue, medical personnel pinched the both ends of this handheld portion 2 with both hands, can be steady hold whole preparation sword.

Of course, the hand-held portion 2 may be designed in other shapes, such as a hand ring or a horizontal rod-shaped handle disposed on each of the two sides of the other end of the knife body 1.

In a preferred embodiment, a middle portion of one side of the handle 2 is provided with an assembly groove 21 matched with the other end of the cutter body 1, and the other end of the cutter body 1 is fixedly fitted in the assembly groove 21.

In this embodiment, handheld portion 2 is connected closely with cutter body 1, and difficult relative pine that appears takes off rocks, and the steady of easily making goes on.

In a preferred embodiment, three of the marker ears 12 are provided, and two of the marker ears are adjacent to each other.

In this embodiment, form three point mark through three mark ear 12 to the contour line of the positive and negative of location cornea tissue compares cutter body 1 cutting position through the contour line, thereby can confirm the positive and negative of cornea tissue fast, and whole positioning process can not harm the cornea tissue, and labour saving and time saving.

It should be noted that: through the position arrangement of the two near and far marking points, medical staff can very quickly find the front and back surfaces of corneal tissue.

In a preferred embodiment, the cutter body 1 is a metal alloy cutter body.

In this embodiment, the material is selected rationally, and the cutter body accords with medical standard, and sound construction.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A knife for making a donor for corneal endothelial transplantation, characterized in that it comprises a knife body (1), one end of the knife body (1) is provided with an annular tubular knife edge (11), and the knife edge (11) extends along the The contour lines of the cutter body (1) are protruded to many places around it, and a plurality of spaced marking ears (12) are formed.

2 . The knife for making a donor for corneal endothelial transplantation according to claim 1 , characterized in that: the knife body ( 1 ) is in the shape of a circular tube, and the tube wall is protruded with a plurality of cross-sections along its circumferential direction. 3 . A convex corrugated portion (13) in the shape of an arc, one end of the cutter body (1) is processed into the blade (11), and the blade (11) corresponding to the convex corrugated portion (13) forms the marking lug (12).

3 . The knife for making a donor for corneal endothelial transplantation according to claim 2 , wherein the hand-held portion ( 2 ) is a handle that is detachably connected to the other end of the knife body ( 1 ). 4 .

4 . The knife for making donors for corneal endothelial transplantation according to claim 3 , wherein the hand-held portion ( 2 ) is a strip-shaped plate-shaped structure perpendicular to the knife body ( 1 ). The other end of the cutter body (1) is connected with the middle part of one side of the handle portion (2).

5 . The knife for making a donor for corneal endothelial transplantation according to claim 4 , wherein a middle part of one side of the hand-held part ( 2 ) is provided with a knife that matches the other end of the knife body ( 1 ). 6 . An assembly groove (21) is provided, and the other end of the cutter body (1) is embedded and fixed in the assembly groove (21).

6. The knife for making a donor for corneal endothelial transplantation according to any one of claims 1 to 5, characterized in that: the marking ears (12) are provided with three, and two of them are close to each other.

7 . The knife for making a donor for corneal endothelial transplantation according to claim 2 , wherein the knife body ( 1 ) is a metal alloy knife body. 8 .