Medical suture needle

Abstract

The present application relates to the medical field, especially to a medical suture needle, which aims to solve the problems of inconvenient threading, unreliable suture fixation, unadjustable needle body length and undetachable needle tail. The technical scheme is as follows: a medical suture needle comprises a needle body, a connecting body, an adjusting body and a needle tail. The needle body is in the shape of a fishhook. The connecting body is arranged on the needle body. The adjusting body is movably connected to the connecting body. The needle tail for threading and fixing is installed on the adjusting body. The needle tail is provided with an open threading port on the upper side. The threading port is in a V-shaped structure. The suture does not need to pass through a closed small hole, but only needs to be put into the V-shaped opening side to slide in, which greatly reduces the difficulty of threading alignment and improves the threading efficiency.

Description

Technical Field

[0001] This invention relates to the medical field, and more particularly to a medical suture needle. Background Technology

[0002] In clinical surgery, suture needles are among the most frequently used medical instruments. Existing suture needles are typically made as a single unit, with the needle body and tail forming a single piece. The tail has a threading hole, requiring the surgeon to pass the suture through this extremely small hole, a time-consuming and laborious operation, especially in emergency situations or when suturing deep tissues. Furthermore, the fixed length of existing suture needles limits their applicability; the tail is inseparable from the body, requiring postoperative suture cutting to remove the needle, a cumbersome procedure; and the suture, secured only by the threading hole, is prone to loosening or dislodging during repeated tissue punctures, affecting suture quality. Therefore, it is necessary to provide a medical suture needle that is easy to thread, reliably fixed, adjustable in length, and has a replaceable tail. Summary of the Invention

[0003] In order to overcome the shortcomings of existing suture needles, such as inconvenience in threading, unreliable suture fixation, non-adjustable needle length, and non-removable needle tail, this invention provides a medical suture needle.

[0004] The technical solution is: a medical suture needle, including a needle body; the needle body is configured in the shape of a fishhook; it also includes a connector, an adjusting body and a needle tail; the connector is provided on the needle body; the adjusting body is movably connected to the connector; the needle tail for threading and fixing is installed on the adjusting body.

[0005] Furthermore, a clamping part is provided at the tip of the needle body.

[0006] Furthermore, the needle body is provided with a flat section.

[0007] Furthermore, the adjusting body and the connecting body are connected by a thread.

[0008] Furthermore, the adjusting body has a mating part, and it is connected to the needle tail by a thread.

[0009] Furthermore, a wire inlet is provided on the upper side of the needle tail, and the wire inlet is designed as an open V-shaped structure.

[0010] Furthermore, a fixing part is provided at the bottom of the needle tail.

[0011] Furthermore, the suture inlet is designed as two symmetrical, elastic forked arms, with the suture being introduced through a V-shaped opening and then inserted between the two arms.

[0012] Furthermore, an anti-slip part is provided on the needle tail, and the surface of the anti-slip part is provided with anti-slip texture or serrated structure.

[0013] Furthermore, the fixing part is designed as an inverted frustum shape.

[0014] The beneficial effects are as follows: This invention achieves the following by setting an open thread inlet on the upper side of the needle tail and adopting a V-shaped structure. The thread does not need to pass through the closed small hole. It can be slid in by simply inserting it from the side of the V-shaped opening, which greatly reduces the difficulty of threading and alignment and improves threading efficiency. The overall working length of the suture needle can be continuously finely adjusted by rotating the adjusting body through a threaded connection between the adjusting body and the connecting body, adapting to different tissue depths. The same needle body and connecting body can be matched with adjusting bodies of different lengths. Longer specifications are selected for deep suturing, and shorter specifications are selected for superficial suturing, reducing the types of instruments to be stocked and lowering procurement costs. The connecting body and adjusting body are detachable, and the adjusting body and needle tail are detachably connected via two threads. After surgery, each component can be quickly separated for easy cleaning, disinfection, and individual replacement. When the needle tip becomes dull, the needle body can be replaced separately; when the needle tail is worn or needs to be adapted to different sutures, the needle tail can be replaced separately, eliminating the need to discard the entire suture needle, reducing consumable costs, and increasing the flexibility of instrument use. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the medical suture needle of the present invention; Figure 2 This is a three-dimensional structural diagram of the connector and adjuster assembly of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the needle tail of the present invention; Figure 4 This is an exploded view of the adjusting body and needle tail of the present invention.

[0016] The component names and serial numbers in the diagram are as follows: 1-Needle body, 1001-Clamping part, 1002-Flat part, 2-Connecting body, 3-Adjusting body, 3001-Thread 1, 3002-Matching part, 4-Needle tail, 4001-Inlet, 4002-Anti-slip part, 4003-Fixing part, 4004-Thread 2. Detailed Implementation

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0018] Example 1

[0019] A type of medical suture needle, such as Figures 1-4 As shown, it includes a needle body 1; the needle body 1 is configured in the shape of a fishhook; It also includes a connector 2, an adjuster 3, and a needle tail 4; the connector 2 is provided on the needle body 1; the adjuster 3 is movably connected to the connector 2; and the needle tail 4 is installed on the adjuster 3.

[0020] The needle body 1 has a clamping part 1001 at the needle tip so that the tweezers can easily grasp and fix the needle tip after it passes through the wound, thus preventing slippage.

[0021] The needle body 1 is provided with a flat part 1002 so that when medical staff hold the needle body 1, it will not slip and cause the needle tip to puncture the medical staff.

[0022] The adjusting body 3 and the connecting body 2 are connected by a thread 3001 so that the length of the adjusting body 3 can be adjusted.

[0023] The adjusting body 3 has a mating part 3002, and is connected to the needle tail 4 by a thread 4004, so that the adjusting body 3 and the needle tail 4 are detachable and replaceable.

[0024] The needle tail 4 has a wire inlet 4001 on its upper side, and the wire inlet 4001 is designed as an open V-shaped structure.

[0025] The bottom of the needle tail 4 is provided with a fixing part 4003, which makes it easy to wind and fix the thread to prevent it from falling off.

[0026] The 4001 inlet is designed with two symmetrical elastic forked arms. The suture is introduced through the V-shaped opening and then inserted between the two arms.

[0027] The needle tail 4 is provided with an anti-slip part 4002. The surface of the anti-slip part 4002 is provided with anti-slip texture or serrated structure to increase the friction between it and the sewing thread.

[0028] The needle body 1 in this application is made of maraging stainless steel, the composition of which is: Cr: 11.5-12.5wt%; Ni: 11.5-12.5wt%; Mo: 2.5-3.5wt%; Cu: 1.0-2.0wt%; Ti: 1.4-1.8wt%; Mn: ≤2.0wt%; Al: ≤2.0wt%; Si: ≤1.0wt%; C: <0.03wt%; F: balance. After solution treatment, multi-pass cold drawing and aging treatment, the Vickers hardness can reach about Hv650. It has the characteristics of sharp and tough needle tip that is not easy to break, and high strength of needle body 1 that is not easy to break, and is especially suitable for medical suture needles with a cross-sectional diameter of less than 2mm. The specific composition and preparation method of the above-mentioned maraging stainless steel can be found in Chinese invention patent with publication number CN107254642B.

[0029] Traditional suture needles typically have a closed threading hole at the end, requiring the suture to pass through one end of the hole and out the other. This requires alignment during threading, which is time-consuming, especially in emergency situations, deep tissue suturing, or when the surgeon is wearing gloves or has limited visibility. Furthermore, the threading hole has a fixed diameter, which can only accommodate sutures of a specific diameter. Sutures that are too thick cannot pass through, while those that are too thin tend to slide inside the hole.

[0030] This structure features a suture inlet 4001 on the upper side of the needle tail 4, and the inlet 4001 is designed as an open V-shape. When threading the suture, it does not need to pass through a closed small hole; it can simply be inserted laterally from the V-shaped opening and slid along the V-shaped slope between the two forked arms. The open V-shaped structure of the inlet 4001 provides guidance and error tolerance, and the large opening allows the surgeon to quickly complete the threading without precisely aligning the suture with the eyelet, significantly improving threading efficiency.

[0031] Meanwhile, the two forked arms of the thread inlet 4001 have a certain degree of elasticity. When the thread diameter is small, the thread can be inserted into the bottom of the V-shape; when the thread diameter is large, the forked arms are stretched open and generate clamping force, holding the thread between the forked arms. Therefore, the thread inlet 4001 can accommodate threads of different diameters, including finer non-absorbable threads, thicker braided threads, and absorbable threads, solving the problem of the narrow thread diameter compatibility range of traditional closed thread holes.

[0032] After threading, the anti-slip part 4002 comes into contact with the thread. The surface of the anti-slip part 4002 is provided with anti-slip texture, serrated or mesh-like raised structure, which can increase the friction between it and the thread. Before the thread is finally tightened and fixed, even if the suture needle is temporarily placed or moved, the thread is not easy to slip off from the thread inlet 4001, which facilitates subsequent winding and fixing operations.

[0033] After the thread is inserted through the inlet 4001, it passes through the anti-slip part 4002 and then wraps around the fixing part 4003 at the bottom of the needle tail 4. The fixing part 4003 is an annular groove or a winding post structure, and the thread can be wrapped one or more times. Subsequently, the needle tail 4 is tightened to the mating part 3002 on the adjusting body 3 through the second thread 4004. During the tightening process, an axial pressing force is generated between the end face of the adjusting body 3 or the mating part 3002 and the bottom of the needle tail 4, pressing the thread wrapped around the fixing part 4003; at the same time, the second thread 4004 locks the needle tail 4 to the adjusting body 3, preventing it from loosening in the opposite direction.

[0034] Thus, the suture is secured in multiple ways: the V-shaped structure of the suture inlet 4001 creates a wedge, the anti-slip part 4002 provides frictional resistance, the fixing part 4003 provides a wrapping fixation, and the adjusting body 3, when tightened with the needle tail 4, creates axial compression. These four elements work together to significantly improve the suture's tensile strength, making it less prone to loosening or slippage during repeated punctures of tough tissue, resulting in high suture reliability. This fixation method requires no knotting or additional pressing, is simple to operate, and is adaptable to sutures of different diameters.

[0035] After sewing is completed, rotate the needle tail 4 in the opposite direction to loosen the thread 4004 from the mating part 3002, thus releasing the pressure on the suture on the fixing part 4003. Since the thread inlet 4001 has an open V-shaped structure, the suture does not need to be withdrawn from the closed hole and can be taken out directly from the side of the V-shaped opening; at the same time, the wrapping on the fixing part 4003 is released, and the suture can be quickly untied.

[0036] Therefore, there is no need to cut the sutures with scissors after surgery, avoiding the cumbersome suture cutting operation and the presence of suture ends in the body, reducing the risk of foreign bodies; suture removal is quick, shortening the surgical completion time. The needle tail 4, adjusting body 3, connecting body 2, and needle body 1 can be disassembled separately for easy cleaning, disinfection, and replacement. When the needle tip becomes dull, needle body 1 can be replaced individually; when needle tail 4 is worn or needs to be adapted to different sutures, needle tail 4 can be replaced individually, thereby reducing consumable costs and improving the flexibility of instrument use.

[0037] Furthermore, before surgery, the surgeon selects an adjusting body 3 of appropriate length based on the tissue depth of the surgical site, the patient's body type, and operating habits. The connecting body 2 and the adjusting body 3 are connected by a 3001 thread. Rotating the adjusting body 3 allows it to move axially along the connecting body 2, thereby continuously fine-tuning the overall working length of the suture needle. When a significant extension is required, the adjusting body 3 can be completely detached from the connecting body 2 and replaced with a longer adjusting body 3, or an extension joint can be added through the separation interface between the connecting body 2 and the adjusting body 3, and then tightened again. Therefore, the overall length of the suture needle can be adjusted within a wide range, which has the following advantages: First, when suturing deep tissues, there is no need to replace the long needle holder or use an extended one-piece suture needle, avoiding operational difficulties caused by the needle body 1 being too short; Second, the needle body 1 can be shortened during superficial surgery, improving operational controllability; Third, the connector 2 and the adjustment body 3 can be separated, making the suture needle a modular structure. The same needle body 1 and connector 2 can be paired with adjustment bodies 3 of different lengths, reducing instrument inventory and procurement costs; Fourth, the threaded 3001 connection has a friction-resistant anti-loosening effect, and the connection is stable after adjustment, making it less likely to retract or detach during puncture; Fifth, it is easy to clean, disinfect, and replace individually after disassembly, and if a part is damaged, there is no need to discard the entire suture needle.

[0038] Example 2

[0039] Based on Example 1, such as Figure 4 As shown, the fixing part 4003 is configured as an inverted frustum shape.

[0040] After the suture is introduced through the inlet 4001, it is wound around the fixing part 4003. The fixing part 4003 is shaped like an inverted frustum and is made of a material or structure with elastic deformation capability (e.g., a thin-walled elastic metal, elastic plastic, or an elastomer with radial grooves). When the needle tail 4 is tightened with the mating part 3002 on the adjusting body 3 through the thread 4004, the end face or inner conical surface of the mating part 3002 of the adjusting body 3 gradually presses against the outer circumferential surface of the inverted frustum of the fixing part 4003. Due to the conical mating relationship of the inverted frustum structure, the axial force generated by tightening is decomposed into a radial component through the conical surface, causing the fixing part 4003 to be subjected to inward radial pressure. Under the action of radial pressure, the fixing part 4003 undergoes elastic contraction deformation, and its outer diameter gradually decreases, thereby tightly holding the suture wound around it.

[0041] The tightening process is gradual and adjustable: as the needle tail 4 is screwed into the suture more deeply, the radial contraction of the fixing part 4003 gradually increases, and the clamping force on the suture also increases. When tightened to the predetermined position, the fixing part 4003 forms a stable radial compression fixation on the suture. Because the fixing part 4003 is elastic, its contraction deformation can adapt to sutures of different diameters, avoiding damage or cutting of the suture due to rigid compression; at the same time, the elastic deformation can also provide cushioning when the suture is subjected to instantaneous tension, preventing the suture from breaking due to impact load.

[0042] Furthermore, the elastic contraction of the fixing part 4003 and the wedging action of the thread inlet 4001 work together: the thread inlet 4001 applies an initial clamping force and pre-tension force to the suture, keeping the suture tight during winding; while the fixing part 4003 applies a radial clamping force to the suture after tightening, together forming a double locking of axial wedging and radial clamping. When the needle tail 4 is rotated in the opposite direction, the radial pressure on the fixing part 4003 is released, the elasticity is restored, and the suture can be easily untied from the fixing part 4003 and taken out laterally from the open V-shaped opening of the thread inlet 4001 without cutting the suture, achieving convenient suture removal.

[0043] The elastic tightening structure of the aforementioned inverted frustum-shaped fixing part 4003 makes the suture fixing no longer rely solely on winding friction and axial compression, but rather on the radial contraction of the inverted frustum driven by the tightening action, which converts the tightening force into a radial clamping force on the suture, thereby significantly improving the suture's resistance to pull-out and ensuring that the suture does not loosen or fall off during repeated tissue punctures.

[0044] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A medical suture needle, comprising a needle body (1); the needle body (1) is configured in a fishhook shape; characterized in that, It also includes a connector (2), an adjuster (3) and a needle tail (4); the connector (2) is provided on the needle body (1); the adjuster (3) is movably connected to the connector (2); the needle tail (4) for threading and fixing is installed on the adjuster (3).

2. A medical suture needle according to claim 1, characterized in that, The needle body (1) has a clamping part (1001) at the needle tip.

3. A medical suture needle according to claim 1, characterized in that, The needle body (1) is provided with a flat part (1002).

4. A medical suture needle according to claim 1, characterized in that, The adjusting body (3) and the connecting body (2) are connected by thread 1 (3001).

5. A medical suture needle according to claim 4, characterized in that, The adjusting body (3) has a mating part (3002) and is connected to the needle tail (4) by a thread (4004).

6. A medical suture needle according to claim 5, characterized in that, The needle tail (4) has an inlet (4001) on the upper side, and the inlet (4001) is set as an open V-shaped structure.

7. A medical suture needle according to claim 6, characterized in that, The bottom of the needle tail (4) is provided with a fixing part (4003).

8. A medical suture needle according to claim 6, characterized in that, The inlet (4001) is set as two symmetrical elastic forked arms, and the suture is inserted through the V-shaped opening and then inserted between the two arms.

9. A medical suture needle according to claim 7, characterized in that, The needle tail (4) is provided with an anti-slip part (4002), and the surface of the anti-slip part (4002) is provided with anti-slip texture or serrated structure.

10. A medical suture needle according to claim 7, characterized in that, The fixing part (4003) is configured as an inverted frustum shape.

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