CN215192888U

CN215192888U - Limiting device and limiting assembly for capsulorhexis of anterior capsule membrane hole of lens

Info

Publication number: CN215192888U
Application number: CN202121019991.XU
Authority: CN
Inventors: 陈菲菲; 解正高; 朱丹丹; 张文文; 张司; 刘亚军; 何自芳
Original assignee: Nanjing Drum Tower Hospital
Current assignee: Nanjing Drum Tower Hospital
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-12-17
Anticipated expiration: 2031-05-13

Abstract

The utility model relates to a limiting device and spacing subassembly of sacculus is torn in sacculus hole before crystalline lens, wherein limiting device includes annular spacing collar, and one side ring week of annular spacing collar is equipped with annular fluting, and annular grooved annular lip is located the coplanar, and annular grooved annular lip is attached in preceding sacculus surface between two parties during the operation, and the radial body coupling in circumference outer fringe of annular spacing collar has communicating pipe, and communicating pipe and annular grooved vallecular cavity intercommunication, the terminal periphery of communicating pipe are equipped with protruding muscle. The utility model discloses a stop device of capsule is torn in capsular hole before lens for when tearing the capsule in the outer excision of cataract capsule, annular spacing collar is implanted in preceding capsular surface and attached placed in the middle through cornea main incision, make and form a ring chamber between annular fluting and the preceding capsular, the end-to-end connection suction needle tubing of communicating pipe sucks annular grooved ring chamber, make the ring chamber form the negative pressure and adsorb in preceding capsular surface, carry out accurate capsulorhexis trompil of tearing along the inner edge of annular spacing collar again, the position and the shape precision in preceding capsular hole have been ensured.

Description

Limiting device and limiting assembly for capsulorhexis of anterior capsule membrane hole of lens

Technical Field

The utility model relates to the technical field of ophthalmic medical appliances, in particular to a limiting device for a lens front capsule membrane hole capsulorhexis and a limiting component thereof.

Background

In the cataract ultrasonic emulsification suction or cataract extracapsular extraction, the manufacture of the anterior capsule hole of the crystalline lens is one of the key steps of the operation. In order to ensure the success rate of the operation, the quality of the preparation of the anterior capsule hole of the crystalline lens is one of the key factors related to the operation effect, the anterior capsule hole and the pupil are required to be concentric, the shape is a perfect circle with the diameter of 5.5mm, the center, the continuity and the smooth edge are required, and the precision requirement reaches the CCCC (centered continuous annular capsulorhexis). The preparation of the anterior capsule opening is very demanding for the operator, especially for the operation of over-mature cataract or intended to be implanted with multifocal intraocular lens or astigmatic intraocular lens, and has certain challenges and tests compared with the ordinary operators.

SUMMERY OF THE UTILITY MODEL

The utility model discloses in the cataract operation to prior art, the required precision that the operation of anterior capsule membrane hole avulsion bag exists is high, and the problem that the operation degree of difficulty is big provides a stop device that capsule was avulsion bag in anterior capsule membrane hole of crystalline lens to realize accurate avulsion bag, and the greatly reduced operation degree of difficulty reduces the examination of operating doctor.

The utility model aims at realizing like this, a stop device of sac is torn in preceding capsule hole of crystalline lens, including annular spacing collar, one side ring week of annular spacing collar is equipped with annular fluting, annular grooved mouth reason is located the coplanar, and annular grooved annular mouth reason is attached in preceding capsule between two parties during the operation, the radial integrative communicating pipe that is connected with of circumference outer fringe of annular spacing collar, communicating pipe and annular grooved vallecular cavity intercommunication, the terminal periphery of communicating pipe is equipped with protruding muscle.

The utility model discloses a stop device of capsule is torn in capsular hole before lens, when being used for tearing the capsule, annular spacing ring is implanted in the anterior chamber through the main notched operation passageway of cornea, and attached in preceding capsular bag between two parties, make and form a ring chamber between annular fluting and the preceding capsular bag, the inner circle edge of annular spacing ring just in time just right with the preceding capsular hole of waiting to cut simultaneously, the end-to-end connection suction needle tubing of communicating pipe aspirates annular slotted ring chamber, make the ring chamber form the negative pressure and adsorb in preceding capsular bag front surface, carry out accurate capsulorhexis trompil of tearing along the inner edge of annular spacing ring again, the position and the shape accuracy in preceding capsular hole have been ensured. Therefore, the utility model discloses a stop device that capsulorhexis was torn in anterior capsule hole of lens can realize accurate location and tear the bag spacing in tearing the bag operation to guarantee to tear notched shape of bag and position accuracy, reduce the operation degree of difficulty.

Furthermore, in order to facilitate the accurate control of the size of the anterior capsule hole, the diameter of the inner ring of the annular limiting ring is equal to that of the anterior capsule hole of the crystalline lens.

Furthermore, the section of the annular limiting ring is in a semicircular shape.

Furthermore, the inner diameter of the communicating pipe is 0.5-0.8 mm, and the length of the communicating pipe is 5-8 mm.

In order to facilitate extrusion implantation and repeated sterilization in operation, the annular limiting ring and the communicating pipe are made of silica gel materials.

Adopt the utility model discloses a stop device of anterior capsule membrane hole of lens tear capsule has following beneficial effect when tearing the capsule:

1. the shape and the diameter of the anterior capsule hole of the crystalline lens are accurately controlled, the operation is simple and convenient, the cost performance is higher than that of femtosecond laser capsulorhexis, and the economic burden of a patient is relieved;

2. the limiting device is made of silica gel, can be folded, can pass through a small corneal incision, and cannot damage corneal endothelium under the protection of viscoelastic agent; the silica gel material is high temperature resistant, can be subjected to conventional high temperature and high pressure sterilization treatment, and can be repeatedly used;

3. the perfect capsulorhexis can be achieved by attaching and positioning the limiting ring and the surface of the front capsular membrane, and even a beginner is easy to master and strong in applicability;

4. the silica gel has better elasticity, and can ensure that the annular limiting ring part of the device is in a perfect circle shape;

5. for white cataract or black cataract, the capsule cutting method and dyeing are not needed, and the opening of the anterior capsule membrane hole can not occur;

6. the high-quality and high-standard anterior capsule hole manufactured by the device provides important technical guarantee for the application of functional artificial lenses such as multifocal artificial lenses, astigmatic correction artificial lenses and the like.

For further be convenient for the operation, the utility model also provides a spacing subassembly that is used for anterior capsule hole of lens to tear the bag, including being used for spacing above-mentioned anterior capsule hole of lens to tear the stop device of bag, the end-to-end connection of stop device's communicating pipe has the hose, the other end of hose is connected with the suction needle tubing that is used for sucking annular grooved vallecular cavity.

Drawings

Fig. 1 is a front view of the limiting device for capsulorhexis of the anterior capsule of the lens of the present invention.

Fig. 2 is a cross-sectional view taken along a-a of fig. 1.

Fig. 3 is a view of the present invention showing a spacing assembly for capsulorhexis of the anterior lens capsule.

Wherein, 1, an annular spacing ring; 1A, annularly slotting; 2, communicating pipes; 2A, convex ribs; 3, a hose; 4 suction needle tube.

Detailed Description

Example 1

As shown in fig. 1 and 2, do the utility model discloses a stop device that capsular bag was torn in lens anterior capsule hole, including annular spacing collar 1, one side ring week of annular spacing collar 1 is equipped with annular fluting 1A, and annular fluting 1A's mouth reason is located the coplanar, and annular fluting 1A's annular mouth reason is attached in the front side of anterior capsule between two parties during the operation, and the radial body coupling in circumference outer fringe of annular spacing collar 1 has communicating pipe 2, and communicating pipe 2 communicates with annular fluting 1A's vallecular cavity, and communicating pipe 2's terminal periphery is equipped with protruding muscle 2A. In order to facilitate the folding implantation of the limiting device into eyes in an operation, the annular limiting ring 1 and the communicating pipe 2 are made of silica gel materials, and the limiting device made of the silica gel materials can be reused after high-temperature disinfection.

In order to facilitate accurate control of the size of the anterior capsule hole, the diameter of an inner ring of the annular limiting ring 1 is equal to that of the anterior capsule hole of the crystalline lens, the cross section of the annular limiting ring 1 is in a semicircular shape, the inner diameter of the communicating pipe 2 is 0.5-0.8 mm in order to adapt to the size of the anterior capsule hole, and the length of the communicating pipe is 5-8 mm. When the front capsular sac hole is torn, the annular limiting ring 1 is attached to the surface of the front capsular sac, and the front capsular sac can be fixedly torn along the annular inner opening edge of the annular groove 1A, so that the smooth and round front capsular sac hole can be accurately manufactured, and the operation control difficulty is reduced.

Example 2

Fig. 3 shows a limiting assembly for capsulorhexis of anterior lens capsule according to this embodiment, which includes the limiting device for capsulorhexis of anterior lens capsule according to embodiment 1, the end of the communicating tube 2 of the limiting device is connected with a flexible tube 3, and the other end of the flexible tube 3 is connected with an aspiration needle tube 4 for aspirating the annular slotted cavity.

By adopting the limiting assembly for tearing the capsule from the anterior capsular sac hole of the crystalline lens, when the capsule is torn, the annular limiting ring 1 is implanted into the anterior chamber through an operation channel of a main corneal incision by using implantation forceps, the annular limiting ring is attached to the surface of the anterior capsular sac in the middle, an annular cavity is formed between the annular groove and the anterior capsular sac by slight pressure, meanwhile, the edge of an inner ring of the annular limiting ring 1 just faces the anterior capsular sac hole to be cut, the communicating pipe 2 is connected to the suction needle tube 4 through the hose 3 to suck the annular cavity, so that negative pressure is formed in the annular cavity and is adsorbed on the surface of the anterior capsular sac, and accurate capsule tearing and opening are carried out from the main corneal incision by using the capsule tearing forceps along the inner edge of the annular limiting ring 1, so that the position and the shape accuracy of the anterior capsular sac hole are ensured. With the help of the spacing subassembly that is used for anterior capsule opening of lens to tear capsule of this embodiment, in the operation of tearing the capsule, can realize accurate location and tear the capsule spacing to guarantee to tear the shape and the position accuracy of a bag incision, reduce the operation degree of difficulty, to the operation operator of beginner, also grasp very easily, the patient of specially adapted complicated symptom. For example, white cataract or black cataract does not need to use the cutting method and dyeing, and anterior capsule membrane hole opening does not occur;

by adopting the limiting component of the embodiment, the manufactured high-standard high-precision anterior capsule hole provides an important technical guarantee for the success of functional artificial lens implantation operations such as multifocal artificial lenses, astigmatic correction artificial lenses and the like.

Claims

1. The utility model provides a stop device of sacculus is torn in lens anterior capsule membrane hole, a serial communication port, including annular spacing collar, one side ring week of annular spacing collar is equipped with annular fluting, annular grooved annular mouth is along being located the coplanar, and annular grooved annular mouth is along attached in anterior capsule membrane between two parties during the operation, the radial body coupling in circumference outer fringe of annular spacing collar has communicating pipe, communicating pipe and annular grooved vallecular cavity intercommunication, the terminal periphery of communicating pipe is equipped with protruding muscle.

2. The device for limiting capsulorhexis of an anterior lens capsule according to claim 1, wherein the diameter of the inner ring of the annular limiting ring is equal to the diameter of the anterior lens capsule.

3. The device for limiting capsulorhexis of an anterior lens capsule according to claim 1, wherein the cross section of the annular limiting ring is semicircular.

4. The device for limiting capsulorhexis of an anterior lens capsule according to claim 1, wherein the inner diameter of the communicating tube is 0.5-0.8 mm, and the length of the communicating tube is 5-8 mm.

5. The device for limiting capsulorhexis of an anterior lens capsule according to claim 1, wherein the annular limiting ring and the communicating tube are made of silica gel material.

6. A limiting assembly for capsulorhexis of anterior lens capsule, which is characterized by comprising the device for limiting capsulorhexis of anterior lens capsule of any one of claims 1-5, wherein the end of a communicating pipe of the limiting device is connected with a hose, and the other end of the hose is connected with an aspiration needle tube for aspirating the annular slotted groove cavity.