Small-incision skin traction hook

Abstract

The utility model provides a small incision skin traction hook which solves the problem that a special instrument used for a small incision of an ophthalmologic operation is lacked at present. A small incision skin traction hook is formed by sequentially connecting a ring part, a connecting part and a traction part, the front end of the traction part is provided with two hook claws bent towards the lower left, the traction hook is pulled through a silk thread fixed to the ring part, and the silk thread is fixed through hemostatic forceps or a fixing part.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and particularly to the field of ophthalmic surgical instruments technology, specifically a small incision skin traction hook. Background Technology

[0002] Traction of the incision is often required in percutaneous ophthalmic surgeries, such as percutaneous external approach surgery for chronic dacryocystitis and percutaneous resection of periorbital tumors. The purpose of traction is to fully expose the surgical area and provide a good surgical field and operating space.

[0003] To achieve the above objectives, skin retractors are commonly used clinically for traction. However, eye surgery incisions are typically less than 2 cm, and skin retractors are relatively large. Besides obstructing the surgeon's view, they can also cause significant pressure on the patient during placement. Alternatively, suture-assisted traction is also used clinically, involving traction after suturing. However, because the sutures are thin, incision deformation often occurs during traction due to factors such as traction position or force, significantly impacting the surgery.

[0004] In summary, there is currently a lack of a specialized instrument for small incisions in ophthalmic surgery to achieve stable traction and adequate visual field exposure. Utility Model Content

[0005] This invention provides a small-incision skin traction hook, which solves the problem of the current lack of a dedicated instrument for small incisions in ophthalmic surgery.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A small incision skin traction hook, wherein the traction hook is composed of a ring, a connecting part and a traction part connected in sequence, wherein the front end of the traction part has two hook claws that bend downward to the left, and the traction hook is pulled by a thread fixed to the ring, wherein the thread is fixed by a hemostat or a fixing part.

[0008] Furthermore, the hook and the connecting part form an angle of 45-60°.

[0009] Furthermore, the length of the hook is 3-4 mm, and the distance between the two hooks is 3-4 mm.

[0010] Furthermore, the front end of the hook is a round, blunt-tipped claw.

[0011] Furthermore, the ring, connecting part, and traction part are all machined from solid cylinders with a diameter of 1 mm.

[0012] Furthermore, the length of the connecting part is 4-5mm.

[0013] Furthermore, the ring portion has a ring opening on the side near the connecting portion to facilitate the thread passing through.

[0014] Furthermore, the lower outer surface of the hook is provided with threads.

[0015] Furthermore, the hook claw is a flat hook claw, and the flat hook claw has a structure that is narrow at the top and wide at the bottom.

[0016] Furthermore, the flat hook claw body is a flat part, and there are several evenly distributed flat claw heads below the flat part, with gaps formed between adjacent flat claw heads.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This utility model is designed for small incision traction settings, especially for eye-related surgeries, which can both provide traction and allow for viewing of the surgical field through the field of vision between the hooks;

[0019] The traction part has a backward-curving structure and the claw head has a round blunt head structure, which is very friendly to traction, and can both grasp the tissue firmly without damaging the tissue.

[0020] The structure of this utility model is small and lightweight, and one or more can be used at the same time to obtain the desired surgical field environment;

[0021] The hooks of this invention can take many forms. For example, flat hooks can increase the contact area with tissues, enabling better traction and fixation of tissues. At the same time, the contact and traction situation with tissues can be observed from the gap. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a small-incision skin traction hook according to Embodiment 1 of this utility model;

[0023] Figure 2 This is a frontal projection view of a small-incision skin traction hook according to Embodiment 1 of this utility model;

[0024] Figure 3 This is a schematic diagram of the hook claw structure in a small incision skin traction hook according to Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the open ring in a small incision skin traction hook according to Embodiment 2 of this utility model;

[0026] Figure 5 This is a schematic diagram of the flat hook claw in a small incision skin traction hook according to Embodiment 3 of this utility model;

[0027] Figure 6This is a bottom view schematic diagram of the flat hook claw in a small incision skin traction hook according to Embodiment 3 of this utility model.

[0028] Among them, 10-ring portion, 11-ring opening, 20-connecting portion, 30-traction portion, 31-hook claw, 32-claw head, 33-flat hook claw, 331-flat portion, 332-flat claw head, 333-spacer portion. Detailed Implementation

[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0030] The main objective of this invention is to provide a traction device suitable for use in ophthalmic surgery. Ophthalmic incisions are characterized by their small size and susceptibility to excessive force, which can lead to incision deformation. Therefore, the designed device must be compact and lightweight, with low and adjustable traction force, while also not obstructing the field of vision.

[0031] This embodiment provides a small-incision skin traction hook, such as Figure 1 As shown, it is composed of a ring portion 10, a connecting portion 20, and a traction portion 30 connected sequentially. The ring portion 10 is a circular structure used to fix one end of the pull wire, which serves to tighten and fix it. The connecting portion 20 has the ring portion 10 and the traction portion 30 fixedly connected to its two ends respectively. The connecting portion 20 is a cylinder and can be made of either a rigid material or a soft, flexible material. A rigid material connecting portion 20 is easier to manufacture as a single piece, while a soft, flexible material can better conform to the surgical periphery (eye surgery usually requires the traction hook to be pulled and fixed around the eye, and the periphery of the eye has a certain curvature compared to the surgical area). The traction portion 30 is a key component of the traction hook in this embodiment. The traction portion consists of two hooks 31, as shown... Figure 2 As shown, the hooks 31 have a certain distance between them. In this embodiment, the distance between the two hooks 31 is 3-4 mm, preferably 4 mm. The hooks 31 are bent to the lower left at a certain angle relative to the connecting part 20. In this embodiment, the angle between the hooks 31 and the plane containing the connecting part 20 is 45-60°, and the length of the hooks 31 is 3-4 mm. Figure 3 As shown, the end of the claw 32 (the end that contacts the tissue) is a rounded blunt tip, which can grip the tissue firmly without damaging it.

[0032] The ring 10, connecting part 20, and traction part 30 can be integrally molded, for example, made of stainless steel, which is beneficial for repeated disinfection and use. In this embodiment, the ring 10, connecting part 20, and traction part 30 are all machined from a solid cylinder with a diameter of 1 mm, and the length of the connecting part 20 is 4-5 mm.

[0033] The method of use in this embodiment is as follows: the 5-0 silk thread is wrapped and knotted to fix it on the ring 10, the claw 32 of the traction part 30 is placed in the skin incision, the silk thread is pulled back to adjust the traction part 30 to a suitable position (at this time the incision is pulled open at a suitable distance), the silk thread is tightened, and the silk thread is fixed to the sterile cloth around the incision with hemostatic forceps. The size of the incision traction can be adjusted at any time by adjusting the tightness of the silk thread.

[0034] Example 1 provides a traction fixation device, but there is still room for improvement: In the scheme of Example 1, the suture first needs to be wound and fixed to the loop, and then knotted for fixation. This process is relatively time-consuming. If the workload of this step can be reduced through structural improvements, the product will be more conducive to clinical use. Furthermore, there is also room for optimization in fixing the suture to the sterile cloth with hemostats. For example, the sterile cloth is easily deformed when pulled, which is not conducive to fixation and adjustment of the suture. Moreover, the suture is very thin, and hemostats are usually used to clamp tissue or blood vessels, so it is easy to slip or loosen when holding the suture.

[0035] like Figure 4 As shown, an improvement to the ring portion 10 is illustrated, wherein a ring opening 11 is provided on the right side of the ring portion 10 (near the connecting rod). The direction of the ring opening 11 is either obliquely upward or obliquely downward, for example... Figure 4 The image shows an upward-sloping opening, with the opening size being slightly larger than the diameter of the thread for optimal results.

[0036] When using it, fold the thread, pass the folded part through the ring opening 11 and pull it to the left. The two free ends of the thread are fixed with hemostatic forceps. The advantage is that it reduces the time spent tying the thread to the ring 10 and improves the efficiency of the operation.

[0037] To optimize the traction effect of the hook and better prevent slippage, Figure 5 and Figure 6 One optimization scheme is shown. In this embodiment, the hook is a flat hook 33. The flat hook 33 has smooth edges and is shaped like a "webbed foot". Its width gradually increases from top to bottom.

[0038] The main body of the flat hook 33 is the flat part 331. Below the flat part 331 are several flat claw heads 332. The adjacent flat claw heads 332 form a spacer 333. The spacer 333 can reduce the weight of the flat hook 33 and facilitate the observation of the contact and traction of the flat claw heads 332 on the tissue.

[0039] In addition, the hook structure in Embodiment 1 can be continued, and threaded protrusions can be provided on the lower surface of the hook 31, which can also strengthen the traction tissue.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small-incision skin traction hook, characterized in that, The traction hook is composed of a ring, a connecting part and a traction part connected in sequence. The front end of the traction part has two hook claws that bend downward to the left. The traction hook is pulled by a thread fixed to the ring. The thread is fixed by a hemostat or a fixing part.

2. The small-incision skin traction hook according to claim 1, characterized in that, The hook and the connecting part form an angle of 45-60°.

3. The small-incision skin traction hook according to claim 2, characterized in that, The length of the hook is 3-4mm, and the distance between the two hooks is 3-4mm.

4. The small-incision skin traction hook according to claim 3, characterized in that, The front end of the hook claw has a round, blunt-tipped structure.

5. A small-incision skin traction hook according to claim 1, characterized in that, The ring, connecting part and traction part are all machined from solid cylinders with a diameter of 1mm.

6. A small-incision skin traction hook according to claim 5, characterized in that, The length of the connecting part is 4-5mm.

7. A small-incision skin traction hook according to claim 1, characterized in that, The ring portion has a ring opening on the side near the connecting portion to facilitate the thread passing through.

8. A small-incision skin traction hook according to claim 1, characterized in that, The hook claw has threads on its lower outer surface.

9. A small-incision skin traction hook according to claim 1, characterized in that, The hook claw is a flat hook claw, and the flat hook claw has a structure that is narrow at the top and wide at the bottom.

10. A small-incision skin traction hook according to claim 9, characterized in that, The flat hook claw body is a flat part, and there are several evenly distributed flat claw heads below the flat part, with gaps formed between adjacent flat claw heads.

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