Lens capsular bag drag hook device

Abstract

According to the lens capsular bag drag hook device provided by the invention, through the structural design of pre-integrating the suture, the drag hook part and the suture needle, the operation safety and operability are remarkably improved; the pre-fixing design of the suture, the drag hook part and the suture needle eliminates the tedious steps of manufacturing the drag hook on site during the operation, shortens the learning curve and ensures the standardization of the instrument; the long needle scheme is matched with the cornea size, repeated puncture caused by insufficient length during intraocular operation is avoided, the short needle scheme is combined with the sleeve design to provide stable guidance, and tissue damage caused by shaking of the needle body is prevented; the size of the drag hook part is optimized and accurately matched with the bag space, and the accidental injury risk is reduced; the sleeve structure enhances the operation hand feeling, the bottom through opening prevents the drag hook from causing obstruction, and the safety is further improved. In conclusion, by means of the integrated and standardized instrument design, the core problems that in the prior art, operation is complex, the injury risk is high, and adaptability is poor are solved.

Description

Technical Field

[0001] This invention relates to the field of medical consumables, and in particular to a lens capsule retractor device. Background Technology

[0002] Lens subluxation or intraocular lens capsular bag dislocation is a common challenge in ophthalmic surgery. Traditional solutions rely on capsular bag retractors or fixators to achieve capsular bag repositioning. Existing technologies (such as patent CN113208774A) propose single-hole capsular bag retractors that eliminate the need for a scleral flap. These retractors use a one-piece molded hook structure (including an arc-shaped hook and a connecting end with a through hole) to form a loop with the suture, avoiding penetration of the equatorial capsular membrane and the creation of a scleral flap, thus reducing the risk of capsular bag tearing and suture knot exposure. Representative technologies include PMMA anchor retractors, nylon bio-adhesive fixation retractors, and polypropylene T-type retractors. Their core improvement lies in using 4-0 polypropylene sutures pre-fabricated into hooks with through holes, achieving interlaminar fixation of the sclera through an 8-0 suture loop.

[0003] Although the above approach reduces surgical trauma, it still has significant drawbacks:

[0004] The procedure is complicated: the retractor needs to bend the suture on the spot, heat and shape it, and puncture to create a hole (such as using an electrocoagulator to burn the U-shaped end, using a needle holder to hold the blunt end, and using a needle to puncture the hole). There are as many as 5 steps, which prolongs the operation time and depends on the surgeon's proficiency, resulting in a steep learning curve.

[0005] High risk of injury from puncture path: The retractor needs to be inserted into the eye from outside the sclera via a long path (>11mm corneal diameter). Existing needle holders are difficult to control the long needle accurately, which can easily damage the capsule or intraocular tissues (such as the retina).

[0006] Insufficient instrument compatibility: When operating with long needles (>12mm) inside the eye, there is a lack of dedicated needle-holding instruments, which can easily cause positioning deviations due to shaking; while if short needles are used, there is a lack of matching stable guiding devices.

[0007] Lack of standardization: The poor dimensional consistency of temporarily made hooks (such as hook length and through hole diameter relying on manual control) affects the stability of the fixing effect.

[0008] The aforementioned issues limit the safety of the surgery, and the risks of complications (such as pocket damage and secondary dislocation) have not been fundamentally resolved, thus restricting the widespread application of this technique.

[0009] Therefore, there is an urgent need to develop a pre-assembled, easy-to-operate, and safe capsular retractor device to completely eliminate the manual fabrication process during surgery, shorten the learning curve, and resolve the contradiction between the risks of long needle operation and the insufficient stability of short needle, thus providing a standardized solution for the treatment of lens dislocation. Summary of the Invention

[0010] The purpose of this invention is to provide a lens capsule retractor device to solve the problems existing in the prior art.

[0011] To achieve the above objectives, the present invention provides the following solution:

[0012] This invention provides a lens capsule retractor device, comprising:

[0013] The sewing thread has a hook at one end and a connecting part at the other end.

[0014] A sewing needle, one end of which is provided with a needle tip, and the other end of which is provided with a through hole, the connecting part being inserted into and fixed to the through hole;

[0015] A sleeve is fitted over the outside of the needle and the suture thread. The sleeve includes a needle holder tube and a gripping part connected to the needle holder tube. The bottom of the sleeve has a through opening.

[0016] Preferably, the suture is a medical-grade polypropylene suture.

[0017] Preferably, the hook portion includes a first hook body, a second hook body, and a third hook body, wherein the first hook body is connected to the sewing thread, the third hook body is parallel to the first hook body, and the second hook body is connected between the first hook body and the third hook body.

[0018] Preferably, the second hook body has an arc-shaped structure.

[0019] Preferably, the length of the first hook is greater than the length of the third hook, and the length of the third hook is 1.5-2.5 mm.

[0020] Preferably, the suture needle is a medical-grade stainless steel needle.

[0021] Preferably, the suture needle is a short needle with a length of less than or equal to 12 mm.

[0022] Preferably, the needle holder tube is smoothly connected to the gripping part, and the diameter of the gripping part is larger than the diameter of the needle holder tube.

[0023] The present invention achieves the following beneficial technical effects compared to the prior art:

[0024] This invention provides a lens capsular retractor device that significantly improves surgical safety and operability through a pre-integrated suture, retractor, and needle design. The pre-fixation design of the suture, retractor, and needle eliminates the cumbersome step of fabricating the retractor on-site during surgery, shortening the learning curve and ensuring instrument standardization. The long needle design adapts to corneal size, avoiding repeated punctures due to insufficient length during intraocular operations, while the short needle design, combined with a sleeve design, provides stable guidance and prevents needle movement from damaging tissue. The optimized retractor size precisely matches the capsular space, reducing the risk of accidental injury. The sleeve structure enhances the operating feel, and the through-hole at the bottom prevents the retractor from causing obstruction, further improving safety. In summary, this invention, with its integrated and standardized instrument design, solves the core problems of existing technologies, such as complex operation, high risk of injury, and poor adaptability. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a lens capsule retractor device according to Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of a lens capsule hook device according to Embodiment 2 of the present invention;

[0028] Figure 3 This is a schematic diagram of the sleeve structure in Embodiment 2 of the lens capsular hook device provided by the present invention. Detailed Implementation

[0029] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] The purpose of this invention is to provide a lens capsule retractor device to solve the problems existing in the prior art.

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] Example 1:

[0035] This embodiment provides a lens capsule retractor device, such as... Figure 1 As shown, it includes:

[0036] The sewing thread 1 has a hook part 11 at one end and a connecting part 12 at the other end.

[0037] The sewing needle 2 has a needle tip 21 at one end and a through hole 22 at the other end. The connecting part 12 passes through the through hole 22 and is fixed thereto.

[0038] The lens capsular retractor device in this embodiment significantly improves surgical safety and operability through its pre-integrated suture, retractor, and needle structure design. The pre-fixation design of the suture, retractor, and needle eliminates the cumbersome steps of fabricating the retractor on-site during surgery, shortens the learning curve, and ensures instrument standardization.

[0039] In one implementation, the suture 1 is made of medical polypropylene suture, which can be 5-0 medical polypropylene suture, 6-0 medical polypropylene suture, 7-0 medical polypropylene suture, etc.

[0040] In one embodiment, the hook part 11 includes a first hook body 111, a second hook body 112 and a third hook body 113. The first hook body 111 is connected to the sewing thread 1, the third hook body 113 is parallel to the first hook body 111, and the second hook body 112 is connected between the first hook body 111 and the third hook body 113.

[0041] In one embodiment, the second hook 112 has an arc-shaped structure.

[0042] In one implementation, the length of the first hook 111 is greater than the length of the third hook 113, and the length of the third hook 113 is 2mm, thereby ensuring a good hooking effect.

[0043] As one implementation method, the suture needle 2 is a medical-grade stainless steel needle.

[0044] As one implementation method, the suture needle 2 is a long needle with a length of 14mm, which can be adapted to the corneal size and avoid repeated punctures caused by insufficient length during intraocular operations.

[0045] Example 2:

[0046] As a variation of Embodiment 1, this embodiment provides a short needle solution, such as... Figure 2 and 3 As shown, the needle 2 is a short needle with a length of 8mm. A sleeve 3 is fitted around the needle 2 and the thread 1. The sleeve 3 includes a needle holder tube 31 and a gripping part 32 connected to the needle holder tube 31. The bottom of the sleeve 3 has a through opening, the size of which is larger than the diameter of the thread, to ensure that the thread can move freely in it, and to prevent the hook from being obstructed and deformed inside the needle holder tube 31, thereby further improving reliability and safety.

[0047] In one implementation, the needle holder 31 is smoothly connected to the gripping part 32, and the diameter of the gripping part 32 is larger than the diameter of the needle holder 31, thereby providing precise guidance.

[0048] It should be understood that the front part of the needle holder 31 should have a limiting structure 33, so that the needle 2 can be limited within the needle holder 31, thereby preventing the needle 2 from moving automatically and retracting within the needle holder 31, which would prevent suturing. The limiting structure is hollow and the hollow part continues the through opening at the bottom of the sleeve 3, which only restricts the needle 2 from moving freely and retracting within the needle holder 31. The suture 1 can move within it, and the hook part 11 can move freely within the limiting structure and the through opening at the bottom of the sleeve 3 without affecting the shape of the hook part 11.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0051] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A lens capsule retractor device, characterized in that: include: The sewing thread has a hook at one end and a connecting part at the other end. A sewing needle, one end of which is provided with a needle tip, and the other end of which is provided with a through hole, the connecting part being inserted into and fixed to the through hole; A sleeve is fitted over the outside of the needle and the suture thread. The sleeve includes a needle holder tube and a gripping part connected to the needle holder tube. The bottom of the sleeve has a through opening.

2. The lens capsule retractor device according to claim 1, characterized in that: The sutures used are medical-grade polypropylene sutures.

3. The lens capsule retractor device according to claim 1, characterized in that: The hook part includes a first hook body, a second hook body and a third hook body. The first hook body is connected to the sewing thread, the third hook body is parallel to the first hook body, and the second hook body is connected between the first hook body and the third hook body.

4. The lens capsule retractor device according to claim 3, characterized in that: The second hook has an arc-shaped structure.

5. The lens capsule retractor device according to claim 3, characterized in that: The length of the first hook is greater than the length of the third hook, and the length of the third hook is 1.5-2.5mm.

6. The lens capsule retractor device according to claim 1, characterized in that: The suture needle is a medical-grade stainless steel needle.

7. The lens capsule retractor device according to claim 1, characterized in that: The needle used is a short needle with a length of less than or equal to 12 mm.

8. The lens capsule retractor device according to claim 1, characterized in that: The needle holder tube is smoothly connected to the gripping part, and the diameter of the gripping part is larger than the diameter of the needle holder tube.

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