Improved capsulorhexis forceps for posterior cataract capsular membrane

Abstract

The utility model discloses a pair of improved capsulorhexis forceps for posterior capsular membrane of cataract, which comprises a forceps handle and forceps heads, and the forceps handle comprises an end handle, flat elastic forceps arms and a round handle, the connecting part extends from a round handle and is gradually shrunk to form a thin rod shape, the arc-shaped clamping arm (16 mm) inclines upwards by 150 degrees relative to the connecting part, the arc-shaped blunt end (1 mm) is arranged at the tail end of the arc-shaped clamping arm, the included angle between the arc-shaped clamping arm and the connecting part is increased to 150 degrees from 135 degrees of existing mainstream capsulorhexis forceps, the forceps can reach the posterior capsulorhexis more easily, the capsulorhexis requirement of the posterior capsulorhexis is better met, and the operation is more convenient. Therefore, the posterior capsule can be more effectively clamped, and meanwhile, reduction of surgical field definition caused by cornea extrusion is avoided. In addition, the length of the tail ends (16 mm) of the tweezers heads is increased compared with that of common capsulorhexis tweezers (12 mm), clamping of the posterior capsule is more convenient, and the front boundary membrane of the vitreous body is not prone to being damaged. In addition, compared with pointed capsulorhexis forceps, the arc-shaped blunt end is good in grasping performance, effective in abrasion resistance and high in safety.

Description

Technical Field

[0001] The utility model relates to a medical device, in particular to an improved capsulorhexis forceps for posterior capsule of cataract. Background Art

[0002] The most common complication after cataract surgery is secondary cataract, which is the opacity of the posterior capsule of the lens preserved during surgery. It also seriously affects the patient's vision. Therefore, for cataract patients, continuous circular capsulorhexis of the posterior capsule of the lens during surgery can effectively prevent the occurrence of secondary cataract, avoid the patient's second surgery, and achieve twice the result with half the effort.

[0003] At present, most doctors still use ordinary cataract capsulorhexis forceps for posterior capsule circular capsulorhexis. Ordinary capsulorhexis forceps are designed for anterior capsule capsulorhexis. They are characterized by a large arc at the front end and a short tip for clamping the capsule, which makes it difficult to tear the posterior capsule. By increasing the angle of the forceps arm and extending the forceps head, doctors can maintain the operating angle required for tearing the anterior capsule, making the doctor more comfortable during surgery.

[0004] Ordinary cataract capsulorhexis forceps are used to tear the posterior capsule, which exerts great pressure on the cornea and easily causes corneal deformation, seriously affecting the patient's postoperative vision and visual clarity. Changing the angle between the arc-shaped clamp arm and the connecting part from 135° of the current mainstream capsulorhexis forceps to 150° makes it easier to extend backwards, which can effectively avoid the decrease in surgical field clarity caused by corneal deformation, and improve postoperative recovery effect, visual clarity and patient satisfaction.

[0005] The lens capsule is a thin, elastic, cell-free, transparent membrane that completely surrounds the lens. The thickness of the capsule varies from place to place, and the posterior capsule is thinner than the anterior capsule. Considering that the pointed tip of the posterior capsule tear forceps (CN 206660002 U) used for congenital cataracts may increase the risk of rupture of the anterior vitreous limiting membrane and the risk of damaging the anterior vitreous limiting membrane by puncturing too deeply, the modified posterior capsule tear forceps for adult cataracts have been modified from a pointed tip to a curved blunt tip to increase the contact area, improve the gripping performance, and are wear-resistant, effective, and highly safe. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology, the angle and length of traditional tweezers are designed to reach the anterior capsule. In fact, the anatomical adjacent structures are different during the capsulotomy of the anterior and posterior capsules of the lens. The capsulotomy of the posterior capsule requires special attention to the protection of the integrity of the anterior vitreous limiting membrane to avoid damage to the anterior vitreous limiting membrane and complications such as vitreous prolapse. The use of traditional tweezers to perform capsulotomy of the posterior capsule does not take into account the thickness of the lens, the angle between the incision and the capsulotomy site, and the risk of scratching the anterior vitreous limiting membrane due to the pointed design. The tip of the existing capsulotomy forceps is difficult to clamp the grape skin, and the tweezers tip is prone to poor alignment, and may even directly lead to damage to the capsulotomy forceps. An improved capsulotomy forceps for the posterior capsule of cataract is now proposed, which can safely and effectively perform continuous circular capsulotomy of the posterior capsule.

[0007] The utility model is realized by the following technical scheme: the utility model proposes a modified cataract posterior capsule tear forceps, based on the lens thickness (4mm) of the Gullstrand precision model eye, the depth, characteristics and proximity of the posterior capsule anatomy, the length of the existing anterior capsule tear forceps head, the angle between the incision to the anterior capsule tear part and the incision to the posterior capsule tear part, the length of the posterior capsule tear forceps head, and the precise design of a modified cataract posterior capsule tear forceps, comprising a forceps handle and a forceps head, characterized in that: the forceps handle (1) comprises an end handle (11), a cylindrical elastic forceps arm (12) extending into a forked shape, the forceps head (2) comprises a connecting portion (21) extending from the cylindrical elastic forceps arm (12) and gradually shrinking into a thin rod shape, an arc-shaped clamp arm (22) inclined upward by 150 degrees with the connecting portion (21) and having a length of 16mm, and an arc-shaped blunt head (23) with a length of 1mm arranged at the end of the arc-shaped clamp arm (22).

[0008] As an improvement, the outer surface of the cylindrical elastic forceps arm (12) is provided with horizontal and vertical groove knurling.

[0009] As an improvement, an anti-collision buckle is provided on the inner surface of the cylindrical elastic tweezers arm (12).

[0010] As an improvement, the tweezer head is modified to have a connecting portion that is inclined upward by 150°, an arc-shaped clamp arm with a length of 16 mm, and an arc-shaped blunt head with a length of 1 mm arranged at the end of the arc-shaped clamp arm.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model mentions a cataract posterior capsule modified capsulorhexis forceps, which is a more accurate design based on the Gullstrand precision model eye. The utility model is aimed at the posterior capsule continuous circular capsulorhexis surgery of the lens. The angle between the arc clamp arm and the connecting part is increased from 135° of the current mainstream capsulorhexis forceps to 150°, which makes it easier to reach the posterior capsule and better meets the requirements of posterior capsule tearing, so that the posterior capsule can be clamped more effectively, while avoiding corneal compression and causing a decrease in the clarity of the surgical field. In addition, the length of the end of the forceps head (16mm) is increased compared with the ordinary capsulorhexis forceps (12mm), which is more convenient for clamping the posterior capsule and is not easy to damage the anterior vitreous membrane.

[0013] By increasing the angle of the forceps arms and extending the forceps heads, doctors can maintain the operating angle required for tearing the anterior capsule, making the surgery more comfortable for doctors.

[0014] The lens capsule is a thin, elastic, cell-free, transparent membrane that completely surrounds the lens. The thickness of the capsule varies from place to place, and the posterior capsule is thinner than the anterior capsule. Considering that the pointed tip of the posterior capsule tear forceps (CN 206660002 U) used for congenital cataracts may increase the risk of rupture of the anterior vitreous limiting membrane and the risk of damaging the anterior vitreous limiting membrane by puncturing too deeply, the modified posterior capsule tear forceps for adult cataracts have been modified from a pointed tip to a curved blunt tip to increase the contact area, improve the gripping performance, and are wear-resistant, effective, and highly safe.

[0015] The viscoelastic agent will not leak out in large quantities, the stability of the anterior chamber will be better, and the operation will be safer.

[0016] Existing capsulotomy forceps are prone to poor alignment of the forceps tips, which may even directly lead to damage to the capsulotomy forceps. The improved capsulotomy forceps for the posterior capsule of cataract have improved the pointed tip into an arc-shaped blunt tip, which increases the contact area, improves the gripping performance, and is more wear-resistant and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model. Among them: 1, tweezer handle; 11, end handle; 12, elastic tweezer arm; 121, horizontal and vertical groove knurling; 122, anti-collision buckle; 21, connecting part; 22, arc-shaped clamp arm; 23, arc-shaped blunt head.

[0018] Figure 2 It is a structural schematic diagram of the arc-shaped blunt head of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the arc-shaped clamping arm of the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Figure 1 The improved capsulorhexis forceps for posterior capsule of cataract shown in the figure comprises a forceps handle (1) and a forceps head (2), characterized in that: the forceps handle (1) comprises an end handle (11), a cylindrical elastic forceps arm (12) extending in a forked shape. The forceps head (2) comprises a connecting portion (21) extending from the cylindrical elastic forceps arm (12) and gradually shrinking to form a thin rod shape, an arc-shaped clamp arm (22) inclined upward by 150 degrees with the connecting portion (21) and having a length of 16 mm, and an arc-shaped blunt head (23) with a length of 1 mm arranged at the end of the arc-shaped clamp arm (22).

[0021] The outer surface of the cylindrical elastic forceps arm (12) is provided with horizontal and vertical groove knurling (121) to prevent slipping, so that the fingers can hold the forceps more steadily. The cylindrical elastic forceps arm (12) is provided with an anti-collision buckle (122).

[0022] The tweezer head (2) is improved to be an arc-shaped blunt head (23) with a length of 1 mm and arranged at the end of the arc-shaped clamp arm (22).

[0023] The cylindrical elastic forceps arms (12) are two semi-cylindrical forceps handles, which are more convenient for rotation and operation at other angles than a flat hand-held portion. The round handle increases the gripping area and is more stable and easy to control.

[0024] The utility model discloses an improved capsulorhexis forceps for cataract posterior capsule. When used, the method is similar to that of ordinary capsulorhexis forceps. After the lens cortex is cleaned by suction, the forceps are inserted into the posterior lens capsule from the main incision of the cataract, and a scratch is made to remove the flap. The posterior capsule flap is clamped with an arc-shaped blunt tip (23) with a terminal length of 1 mm, and a clockwise or counterclockwise circular motion is made to complete the continuous circular capsulorhexis of the posterior capsule.

[0025] It is worth mentioning that the utility model is aimed at existing products:

[0026] First of all, for the posterior capsule continuous circular capsulotomy surgery of the lens, the angle between the arc-shaped clamp arm and the connecting part is increased from 135° of the current mainstream capsulotomy forceps to 160°, which makes it easier to reach the posterior capsule and better meets the requirements of posterior capsule tearing, thereby more effectively clamping the posterior capsule and avoiding squeezing of the cornea that causes a decrease in the clarity of the surgical field.

[0027] Secondly, the end of the forceps head (16mm) is longer than the ordinary capsulorhexis forceps (12mm), which is more convenient for clamping the posterior capsule and less likely to damage the anterior vitreous membrane. By increasing the angle of the forceps arm and extending the forceps head, the doctor can maintain the operating angle required for tearing the anterior capsule, making the doctor more comfortable during surgery.

[0028] In addition, the lens capsule is a layer of elastic, acellular, transparent film that completely surrounds the lens. The thickness of the capsule in different parts is inconsistent, and the posterior capsule is thinner than the anterior capsule. Considering that the pointed tip of the posterior capsule tear forceps (CN 206660002 U) used for congenital cataracts may increase the risk of rupture of the anterior vitreous limiting membrane and the risk of damaging the anterior vitreous limiting membrane by piercing too deep, the adult cataract posterior capsule tear forceps has been modified to a curved blunt tip to increase the contact area, improve the gripping performance, and be wear-resistant, effective, and highly safe.

[0029] At the same time, the viscoelastic agent will not leak out in large quantities, the stability of the anterior chamber will be better, and the operation will be safer.

[0030] Finally, existing capsulotomy forceps are prone to poor alignment of the forceps tips, which may even directly lead to damage to the capsulotomy forceps. The improved capsulotomy forceps for the posterior capsule of cataract have improved the pointed tip into an arc-shaped blunt tip, which increases the contact area, improves the gripping performance, and is more wear-resistant and effective.

[0031] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary personnel in the field to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents of the present invention for protection have been fully recorded in the claims.

Claims

1. An improved cataract posterior capsule tear forceps, comprising a forceps handle (1) and a forceps head (2), characterized in that The tweezer handle (1) comprises an end handle (11), a cylindrical elastic tweezer arm (12) extending in a forked shape, and the tweezer head (2) comprises a connecting portion (21) extending from the cylindrical elastic tweezer arm (12) and gradually shrinking to form a thin rod shape, an arc-shaped clamp arm (22) inclined upward by 150 degrees with the connecting portion (21) and having a length of 16 mm, and an arc-shaped blunt head (23) having a length of 1 mm arranged at the end of the arc-shaped clamp arm (22).

2. The improved capsulorhexis forceps for posterior cataract capsule according to claim 1, characterized in that The outer surface of the cylindrical elastic forceps arm (12) is provided with horizontal and vertical groove knurling (121).

3. The improved capsulorhexis forceps for posterior cataract capsule according to claim 1, characterized in that The cylindrical elastic forceps arm (12) is provided with an anti-collision buckle (122).

4. The improved capsulorhexis forceps for posterior cataract capsule according to claim 1, characterized in that The tweezer head (2) is improved to be an arc-shaped blunt head (23) with a length of 1 mm and arranged at the end of the arc-shaped clamp arm (22).

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