A pouch drawstring

Abstract

This invention discloses a pouch retractor, belonging to the field of medical device technology. The pouch retractor of this invention includes a first hook body, a second hook body, and a third hook body. The second hook body is arc-shaped, with its first end connected to the first end of the first hook body; the first end of the third hook body is connected to the second end of the second hook body. The third hook body is provided with a threading part and a fixing part. The threading part is used for threading sutures, and the end of the suture can be wrapped around the fixing part and tied into a knot. A receiving space is provided between the fixing part and the third hook body to accommodate the knot, and this space can be used to hide the knot of the suture, solving the problem of easy exposure of suture knots after surgery in traditional methods. Furthermore, this product does not require the creation of an additional scleral flap during surgery, solving the problems of significant eye damage and easy slippage of the lens fixation in traditional lens surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a bag hook. Background Technology

[0002] The lens inside the eye is suspended and fixed to the ciliary body by the suspensory ligaments of the lens. If the suspensory ligaments rupture or are damaged, their ability to fix the lens is weakened, leading to a change in the lens's position, clinically known as lens dislocation or subluxation. Many factors can cause lens dislocation, such as intraocular inflammation, surgery, trauma, and age-related degenerative changes. These can all cause lesions or ruptures of the suspensory ligaments, necessitating surgical treatment for lens dislocation or subluxation.

[0003] Currently, doctors can temporarily or permanently implant a fixator inside the eye to reposition a subluxated lens. The procedure involves one end of the fixator supporting and fixing the lens capsular bag below the anterior capsular opening, and the other end fixed within the scleral layer. The capsular tension ring is a common fixator. However, when doctors use traditional methods to fix the modified capsular tension ring with polypropylene sutures, an additional scleral flap needs to be created for the surgery. Furthermore, there are risks of suture knot exposure post-operatively, leading to lens re-dislodgement.

[0004] Therefore, there is an urgent need for a bag hook to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a capsular retractor to avoid problems such as postoperative suture exposure and lens re-dislodgement.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A pouch hook, comprising:

[0008] First hook body;

[0009] The second hook is arc-shaped, and the first end of the second hook is connected to the first end of the first hook.

[0010] The third hook body has a first end connected to the second end of the second hook body, and the third hook body is provided with a threading part and a fixing part;

[0011] The threading part is used for threading the suture, and the end of the suture can be wrapped around the fixing part and tied into a knot. A receiving space is provided between the fixing part and the third hook body to accommodate the knot. 。

[0012] Preferably, the angle θ between the first hook and the second hook is 5° to 30°.

[0013] Preferably, the threading part includes a threading hole through which the third hook body passes along the width direction of the third hook body, and the threading hole is used for threading the suture.

[0014] Preferably, the second end of the third hook is provided with a groove, which extends through the opposite side walls of the third hook along the width direction. The groove communicates with the threading hole, and the fixing part is disposed in the groove. The space surrounding the fixing part in the groove is the receiving space.

[0015] Preferably, the groove opening diameter D2 is 0.2mm to 0.4mm.

[0016] Preferably, the third hook body includes a first hook body and a second hook body, the first end of the first hook body is connected to the second end of the second hook body, the second end of the first hook body is connected to the first end of the second hook body, the second end of the second hook body is provided with the groove and the threading hole, and the thickness of the second hook body is greater than the thickness of the first hook body.

[0017] Preferably, the thickness D1 of the second hook section is 0.2mm to 0.6mm.

[0018] Preferably, the thickness D3 of the first hook body is 0.1 mm to 0.4 mm.

[0019] Preferably, the first end of the first hook body is provided with a bevel.

[0020] Preferably, the first hook, the second hook, and the third hook have the same width, which is 0.05mm to 2mm.

[0021] The beneficial effects of this invention are:

[0022] This invention provides a capsular retractor, comprising a first hook body, a second hook body, and a third hook body connected end-to-end. The third hook body is provided with a threading part and a fixing part. The threading part is used for threading sutures, and the end of the suture can be wrapped around the fixing part and tied into a knot. A receiving space is provided between the fixing part and the third hook body to accommodate the suture knot. Using the capsular retractor provided by this invention, the receiving space can be used to hide the suture knot, solving the problems of easy exposure of suture knots and lens re-dislodgement after surgery in traditional methods. Furthermore, it eliminates the need for additional scleral flap creation to complete the surgery, thus solving the problem of large surgical trauma in traditional methods. Attached Figure Description

[0023] Figure 1 This is a front view of the hook unit of the present invention;

[0024] Figure 2This is an isometric view of the hook unit of the present invention;

[0025] Figure 3 This is a schematic diagram (a) of the implantable pouch hook device of the present invention in use;

[0026] Figure 4 This is a schematic diagram (II) of the use state of the implantable pouch hook device of the present invention.

[0027] In the picture:

[0028] 1. First hook body; 11. Inclined plane;

[0029] 2. Second hook body;

[0030] 3. Third hook body; 31. Threading hole; 32. Fixing part; 33. First section; 34. Second section;

[0031] 4. Sutures;

[0032] 5. Anterior capsule;

[0033] 6. Posterior capsule. Detailed Implementation

[0034] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail 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.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] like Figures 1 to 4 As shown, this invention provides a capsular retractor, comprising a first hook body 1, a second hook body 2, and a third hook body 3. The second hook body 2 is arc-shaped, with its first end connected to the first end of the first hook body 1, and the first end of the third hook body 3 connected to the second end of the second hook body 2. The third hook body 3 has a threading portion and a fixing portion 32. The threading portion is used for threading a suture 4, and the end of the suture 4 can be wrapped around the fixing portion 32 and tied into a knot. A receiving space for accommodating the knot is provided between the fixing portion 32 and the third hook body 3. Using the capsular retractor provided in this embodiment, the receiving space can be used to hide the suture knot, solving the problems of easy exposure of the knot and lens re-dislodgement after surgery in traditional methods. Furthermore, it eliminates the need for additional scleral flap creation to complete the surgery, thus solving the problem of large surgical trauma in traditional methods.

[0039] In this embodiment, the first hook 1, the second hook 2, and the third hook 3 are all made of implantable metal or polymer materials. Specifically, the implantable metal material is stainless steel, nickel-titanium alloy, or cobalt-chromium-nickel alloy. The polymer material is PEEK or polyurethane. Preferably, the first hook 1, the second hook 2, and the third hook 3 are all made of PEEK.

[0040] Furthermore, the bag retractor can be integrally molded through injection molding or machined. Compared with the bag retractor made by doctors through thermoforming with polypropylene sutures during surgery, its size, angle and other parameters are controllable and it is easy to form a standardized product.

[0041] In this embodiment, the angle θ between the first hook 1 and the second hook 2 is 5° to 30°, which is more conducive to hooking with the anterior capsule 5. Preferably, the angle θ between the first hook 1 and the second hook 2 is 10°.

[0042] In this embodiment, the threading part includes a threading hole 31 through which the third hook 3 passes along the width direction of the third hook 3, and the threading hole 31 is used for the thread 4 to pass through.

[0043] Furthermore, a groove is provided at the second end of the third hook 3, extending through the opposite side walls of the third hook 3 along its width direction. The groove communicates with the threading hole 31, and a fixing part 32 is disposed within the groove. The space surrounding the fixing part 32 within the groove serves as the accommodating space. Preferably, the fixing part 32 has a columnar structure, with its two ends connected to the opposite side walls of the groove. The diameter of the fixing part 32 is smaller than the width of the groove, and the space surrounding the fixing part 32 within the groove is used to accommodate the knot, preventing the knot from being exposed.

[0044] Furthermore, the groove opening diameter D2 is 0.2mm to 0.4mm, preferably 0.2mm. The groove opening diameter D2 being 0.2mm to 0.4mm ensures that the accommodating space is large enough to accommodate the knots of the suture thread.

[0045] In this embodiment, the third hook 3 includes a first hook 33 and a second hook 34. The first end of the first hook 33 is connected to the second end of the second hook 2, and the second end of the first hook 33 is connected to the first end of the second hook 34. The second end of the second hook 34 is provided with a groove 34 and a threading hole 31. The thickness of the second hook 34 is greater than the thickness of the first hook 33 to increase the structural strength of the second hook 34.

[0046] Furthermore, the thickness D1 of the second hook body 34 is 0.2mm to 0.6mm, preferably 0.4mm. The thickness D1 of the second hook body 34 being 0.2mm to 0.6mm ensures that the groove opening diameter D2 is 0.2mm to 0.4mm.

[0047] Furthermore, the length L of the third hook 3 is 2mm to 6mm, preferably 3mm. This length setting ensures that the length of the third hook 3 matches the size of the anterior capsule 5 and the posterior capsule 6.

[0048] In this embodiment, the thickness D3 of the first hook 1 is 0.1mm to 0.4mm. Preferably, the thickness D3 of the first hook 1 is 0.2mm. This avoids the first hook 1 being too thin, resulting in low strength and excessive deformation when it penetrates the anterior capsule 5.

[0049] In this embodiment, the first end of the first hook 1 is provided with a bevel 11, which reduces the contact area between the first end of the first hook 1 and the anterior capsule 5, reduces the trauma to the anterior capsule 5, and facilitates the first hook 11 to penetrate the anterior capsule 5.

[0050] In this embodiment, the first hook 1, the second hook 2, and the third hook 3 have the same width, ranging from 0.05 mm to 2 mm. Preferably, the first hook 1, the second hook 2, and the third hook 3 have the same width, ranging from 1 mm. This avoids the first hook 1, the second hook 2, and the third hook 3 being too narrow, which would cause excessive pressure on the anterior capsule 5 and increase the risk of tearing of the anterior capsule 5. It also avoids the first hook 1, the second hook 2, and the third hook 3 being too wide, which would cause an excessively large wound to the anterior capsule 5 during surgery.

[0051] Reference Figure 3 and Figure 4 As shown, during use, firstly, a threader is used to pass one end of the suture 4 through the threading hole 31, and then it is tied to the fixing part 32 so that the knot is hidden in the receiving space. Then, through the corneal incision or corneoscleral incision, the capsular hook is placed into the eye. The first hook 1 passes through the anterior capsule 5, and the second hook 2 is hooked to the anterior capsule 5. The doctor pulls the other end of the suture 4 according to the position of the lens to adjust the tension of the capsular hook. Then, the other end of the suture 4 is cut close to the scleral surface. The scleral surface is gently pressed to bury the other end of the suture 4 of the capsular hook into the scleral tunnel.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A pouch hook, characterized in that, include: First hook (1); The second hook (2) is arc-shaped, and the first end of the second hook (2) is connected to the first end of the first hook (1); The third hook (3) has a first end connected to the second end of the second hook (2), and the third hook (3) is provided with a threading part and a fixing part (32). The threading part is used for threading the suture, and the end of the suture can be wrapped around the fixing part (32) and tied into a knot. There is a receiving space between the fixing part (32) and the third hook (3) for accommodating the knot. The threading part includes a threading hole (31) through which the third hook (3) passes along the width direction of the third hook (3), and the threading hole (31) is used for threading the suture. The second end of the third hook (3) is provided with a groove. The groove extends through the opposite side walls of the third hook (3) along the width direction. The groove communicates with the thread hole (31). The fixing part (32) is provided in the groove. The space surrounding the fixing part (32) in the groove is the accommodating space.

2. The pouch hook according to claim 1, characterized in that, The angle θ between the first hook (1) and the second hook (2) is 5°~30°.

3. The pouch hook according to claim 1, characterized in that, The groove opening diameter D2 is 0.2mm~0.4mm.

4. The pouch hook according to claim 1, characterized in that, The third hook (3) includes a first hook (33) and a second hook (34). The first end of the first hook (33) is connected to the second end of the second hook (2), and the second end of the first hook (33) is connected to the first end of the second hook (34). The second hook (34) is provided with the thread hole (31) and the second end of the second hook (34) is provided with the groove (34). The thickness of the second hook (34) is greater than the thickness of the first hook (33).

5. The pouch hook according to claim 4, characterized in that, The thickness D1 of the second hook body (34) is 0.2mm~0.6mm.

6. The pouch hook according to claim 1, characterized in that, The thickness D3 of the first hook body (1) is 0.1mm~0.4mm.

7. The pouch hook according to claim 1, characterized in that, The first end of the first hook body (1) is provided with a slope (11).

8. The pouch hook according to claim 1, characterized in that, The first hook (1), the second hook (2) and the third hook (3) have the same width and the width is 0.05mm~2mm.

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