CN218852941U

CN218852941U - Forceps for fixing vitreous cavity cataract nucleus

Info

Publication number: CN218852941U
Application number: CN202320158943.1U
Authority: CN
Inventors: 孙学泉; 林青; 栾莉; 孙晓祥; 黄旭东
Original assignee: Qingdao Qingda Zhengda Guangming Eye Hospital Co ltd
Current assignee: Qingdao Qingda Zhengda Guangming Eye Hospital Co ltd
Priority date: 2023-01-31
Filing date: 2023-01-31
Publication date: 2023-04-14
Anticipated expiration: 2033-01-31

Abstract

The utility model discloses tweezers for fixing a vitreous cavity cataract nucleus, which comprise two opposite tweezers handles, wherein an elastic opening structure is arranged between the two tweezers handles, clamping rods are respectively and fixedly arranged at the end parts of the two tweezers handles, the two clamping rods can jointly extend into the vitreous cavity, and the extending ends of the clamping rods are provided with clamping parts; an optical fiber which can be jointly extended into the vitreous cavity is arranged between the two clamping rods. The utility model discloses during the use, the outside exerting pressure of tweezers handle of two clamping parts accessible, the realization is to the centre gripping of target nuclear piece, optic fibre can be directly shone target nuclear piece, the convenience is realized carrying out effectual interim fixing to the cataract nuclear piece of vitreous body intracavity under the microscope, the head of vitrectomy is when absorbing so, just directly look for the target easily and absorb, be difficult to arouse the vitreous body to mix repeatedly, and to the great nuclear piece of volume, also the convenience is under the stable condition of centre gripping, progressively cut apart and absorb.

Description

Forceps for fixing vitreous cavity cataract nucleus

Technical Field

The utility model relates to a surgical instrument, in particular to a pair of tweezers for fixing a vitreous cavity cataract nucleus.

Background

In the case of cataract ophthalmic surgery, it is now occasionally the case that the posterior capsule is ruptured and the cataract nucleus (also called debris) falls into the vitreous cavity. These core pieces need to be removed in time to achieve the goal of completing the surgery. At present, the above-mentioned extraction operation is mainly to make two puncture holes at the target sclera by using a 23G puncture knife, then to place a vitrectomy head and an optical fiber at the two puncture holes respectively, and to search for the cataract nucleus block by using the glass fiber head and suck it out under the condition of optical fiber illumination, thus completing the nucleus extraction operation. However, the cataract surgery is a fine operation performed under a microscope, the operation space is narrow, the vitrectomy head has a lot of difficulties in the process of sucking the cataract nucleus block falling into the vitreous cavity, if the sucking position is not easy to be accurately found, but the sucking action which is not accurately found can also stir the vitreous body, so that the position of the nucleus block is changed and even falls to the fundus, the sucking can be realized through repeated operation, if the size of the cataract nucleus block is large, the sucking is difficult to suck once, the sucking can be divided into a plurality of times only through a method of repeated adsorption and cutting, and the sucking action can also occur again and the situation that the vitreous body is stirred and sucked repeatedly can be realized. Therefore, the operation efficiency is seriously reduced, the operation difficulty is obviously increased, more importantly, the repeated suction action performed by following the nuclear block easily accidentally injures the fundus tissue, causes complications such as hemorrhage, retinal detachment and the like, and increases the pain of patients. Therefore, it is necessary to provide a surgical instrument which can cooperate with the vitrectomy head to achieve stable and accurate aspiration of the cataract nucleus, so as to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a tweezers for fixing vitreous cavity cataract nucleus piece is provided, it conveniently carries out cataract nucleus piece and fixes temporarily, does benefit to cataract nucleus piece and is stabilized and accurate suction, does benefit to and reduces the cataract surgery degree of difficulty and risk.

In order to solve the technical problem, the technical scheme of the utility model is that: the forceps for fixing the vitreous cavity cataract nucleus comprise two forceps handles which are oppositely arranged, an elastic opening structure is arranged between the two forceps handles, clamping rods are respectively and fixedly arranged at the end parts of the two forceps handles, the two clamping rods can jointly extend into the vitreous cavity, and a clamping part is arranged at the extending end of each clamping rod; and an optical fiber which can jointly extend into the vitreous cavity is arranged between the two clamping rods.

As a preferred technical scheme, avoidance grooves corresponding to the optical fibers are respectively formed in the near side surfaces of the two clamping rods.

As a preferred technical scheme, the cross section of the clamping rod is arranged in an arc shape.

As a preferred technical scheme, the elastic distraction structure comprises a connector positioned between the two forceps handles, and distraction spring plates are respectively fixedly arranged between the connector and each forceps handle.

As a preferred technical solution, the optical fiber is mounted on the connecting body.

As a preferred technical scheme, the far side surfaces of the two forceps handles are respectively provided with anti-skid grains.

Due to the adoption of the technical scheme, the forceps for fixing the vitreous cavity cataract nucleus comprise two forceps handles which are oppositely arranged, an elastic opening structure is arranged between the two forceps handles, the end parts of the two forceps handles are respectively fixedly provided with the clamping rods, the two clamping rods can jointly extend into the vitreous cavity, and the extending ends of the clamping rods are provided with clamping parts; and an optical fiber which can jointly extend into the vitreous cavity is arranged between the two clamping rods. The utility model discloses during the use, optic fibre is along with two the clamping bar is together stretched into the vitreous body intracavity, two the clamping part accessible outside is right the clamp of handle is exerted pressure, realizes the centre gripping to target nuclear piece, optic fibre can be directly shone target nuclear piece, conveniently realizes carrying out effectual interim fixing to the cataract nuclear piece of vitreous body intracavity under microscope, so the head is cut to the vitreous is when absorbing, just directly finds the target easily and absorbs, is difficult to arouse the vitreous to mix repeatedly, and to the great nuclear piece of volume, also conveniently under the stable circumstances of centre gripping, progressively cuts apart and absorb, therefore the cataract nuclear piece is stabilized and accurate suction easily, does benefit to and reduces the cataract surgery degree of difficulty, guarantees operation efficiency, and reduces tissue damage and complication risk.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

fig. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is an enlarged schematic view taken at A-A of FIG. 1;

fig. 3 is a schematic perspective sectional structural view of an embodiment of the present invention;

fig. 4 is a schematic diagram of a state of the embodiment of the present invention in use.

In the figure: 1-forceps handle; 11-anti-skid lines; 2-an elastic distraction structure; 21-a linker; 22-spreading the elastic sheet; 3-clamping the rod; 31-avoidance groove; 4-a clamping part; 5-an optical fiber; 91-vitreous chamber; 92-core block; 93-sclera; 94-glass cutting head.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, exemplary embodiments of the invention are described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in fig. 1 to 4, the forceps for fixing a vitreous cavity cataract nucleus comprise two forceps handles 1 which are arranged oppositely, an elastic opening structure 2 is arranged between the two forceps handles 1, clamping rods 3 are respectively and fixedly arranged at the end parts of the two forceps handles 1, the two clamping rods 3 can jointly extend into a vitreous cavity 91, and a clamping part 4 is arranged at the extending end of each clamping rod 3. In the present embodiment, the thin rod 3 is used as a connecting structure extending into the vitreous cavity 91, so that the injury of the sclera 93 caused by puncture is prevented from being too large, and the tissue damage is reduced. The two forceps handles 1 can keep the two clamping parts 4 in a naturally opened state under the action of the elastic force of the elastic opening structure 2, and when the two forceps handles 1 are pressed by external force, the two clamping parts 4 can be close to each other to form forceps-closing clamping on a target object. Preferably, the distal surfaces of the forceps handles 1 are respectively provided with anti-slip lines 11 to ensure stable operation.

In this embodiment, the elastic distraction structure 2 includes a connecting body 21 located between the two forceps handles 1, a distraction spring plate 22 is respectively fixedly disposed between the connecting body 21 and each forceps handle 1, and when in actual production and manufacture, half of the distraction spring plate 22 and the connecting body 21 can be integrally disposed with the corresponding forceps handle 1.

An optical fiber 5 which can be extended into the vitreous cavity 91 together is disposed between the two clamping rods 3, and for the elastic distraction structure 2 of the present embodiment, the optical fiber 5 is mounted on the connecting body 21. This embodiment is when using, optic fibre 5 is along with two in the clamping bar 3 together stretches into vitreous cavity 91, optic fibre 5 can be directly shone target nuclear piece 92, and the convenience realizes carrying out effectual interim fixing to the cataract nucleus piece 92 in the vitreous cavity 91 under the microscope, so the vitrectomy head 94 when absorbing, just so directly find the target easily and absorb, be difficult to arouse the vitreous body to stir repeatedly, and to the great nuclear piece 92 of volume, also the convenience is under the stable condition of centre gripping, progressively cut apart and absorb, therefore cataract nucleus piece 92 is stabilized and accurate suction easily, do benefit to and reduce the cataract surgery degree of difficulty, guarantee operation efficiency, and reduce tissue damage and complication risk.

Preferably, the proximal surfaces of the two clamping bars 3 are respectively provided with an avoidance groove 31 corresponding to the optical fiber 5. The arrangement of the avoiding groove 31 can ensure that the optical fiber 5 does not obstruct the two clamping rods 3 to be close to each other when the core block 92 is clamped, so that the two clamping parts 4 can be clamped and fixed smoothly, the two clamping rods 3 can be enabled to be smaller in cross section width, the sclera 93 is further prevented from being punctured and wounded excessively, the tissue damage is reduced, and the slender clamping rods 3 can have better bending strength, so that the smooth transmission of the clamping acting force is ensured. Preferably, the cross section of the clamping rod 3 is arc-shaped, the arc-shaped inner side naturally forms the avoiding groove 31, the arc-shaped structure is simple to process, and the outer surface is smooth, so that the secondary scratch to the sclera 93 can be avoided when the device is used.

The basic principles, main features and advantages of the present invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a tweezers for fixing vitreous body cavity cataract nucleus piece, includes two relative tweezers handles that set up, two be equipped with elasticity between the tweezers handle and strut structure, its characterized in that: the end parts of the two forceps handles are respectively fixedly provided with a clamping rod, the two clamping rods can jointly extend into the vitreous body cavity, and the extending ends of the clamping rods are provided with clamping parts; and an optical fiber which can jointly extend into the vitreous cavity is arranged between the two clamping rods.

2. The forceps for immobilizing a vitreous cavity cataract nucleus of claim 1, wherein: and avoidance grooves corresponding to the optical fibers are respectively formed on the near side surfaces of the two clamping rods.

3. The forceps for immobilizing a vitreous cavity cataract nucleus as claimed in claim 2, wherein: the cross section of the clamping rod is arc-shaped.

4. The forceps for immobilizing a vitreous cavity cataract nucleus of claim 1, wherein: the elastic opening structure comprises a connector positioned between the two forceps handles, and opening elastic sheets are fixedly arranged between the connector and each forceps handle respectively.

5. The forceps for immobilizing a vitreous cavity cataract nucleus as claimed in claim 4, wherein: the optical fiber device is installed on the connecting body.

6. The forceps for immobilizing a vitreous cavity cataract nucleus of claim 1, wherein: the far side surfaces of the two forceps handles are respectively provided with anti-skidding grains.