A kind of anti-slip puncture hook needle for high ligation of hernial sac in children

Abstract

This invention discloses an anti-slip puncture hook for high ligation of pediatric hernia sacs, relating to the field of small household appliance technology. It aims to solve the problems of easy slippage of ligation sutures, cumbersome operation, uncontrollable suture release, and the inability to actively clamp within the extremely thin needle body. The key technical points are: a hand handle, a slender hollow needle body, and a puncture assembly. This invention connects the first and second needle cores through an elastic layer, and with the cooperation of a pressing and opening / closing structure, it can achieve stable opening and closing clamping functions within a needle body with an extremely small diameter. It eliminates the need for complex hinge and linkage structures, resulting in low processing difficulty and high reliability. Through the cooperation of the squeezing block and the conical separation groove, the axial pressing force can be smoothly converted into the radial opening force of the needle core. After releasing the pressing, the elastic layer automatically drives the needle core to close. The operation is intuitive and simple; the doctor can complete all operations with just one hand holding the handle, without the need for laparoscopic instruments or special techniques, reducing the risk of peritoneal abrasion from the laparoscope.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically a puncture hook needle, which relates to an anti-slipping puncture hook needle used for high ligation of pediatric hernia sac. Background Technology

[0002] Inguinal hernia is a common pediatric surgical disease. Laparoscopic high ligation of the hernia sac is currently the preferred surgical procedure. This surgery requires laparoscopic monitoring, using a puncture instrument to wrap the ligation suture around the internal inguinal ring, and then tightening the ligation to close the neck of the hernia sac.

[0003] The following instruments are commonly used in current surgeries: traditional hernia ring needles and hernia hook needles; Hernia ring needle: The needle tip has a closed hole for bringing the suture into the abdominal cavity. During the operation, laparoscopic instruments are needed to push the suture end out of the hole and leave it in the abdominal cavity. The operation is cumbersome and can easily damage the peritoneum. Hernia hook needle: The needle tip has an open hook groove, which is used to hook the suture end in the abdominal cavity and bring it out of the body. Because the hook groove is an open structure, the suture is very easy to slip off during the needle withdrawal process, resulting in operation failure and repeated punctures, which increases the risk of damage to the abdominal wall, peritoneum and spermatic cord blood vessels.

[0004] Patent application CN106510782B discloses a high ligation needle for hernia sacs, comprising a ligation needle and a pull rod. The ligation needle includes a rod, a handle, and a needle tip. The handle and needle tip are respectively connected to the two ends of the rod. The needle tip is flat and has a notch. The pull rod is associated with the ligation needle and can reciprocate linearly relative to the ligation needle, thereby opening or closing the notch on the needle tip. When the pull rod closes the notch, a hole A is formed between the pull rod and the needle tip for the suture to pass through. The advantages of this invention are that it integrates the functions of existing hernia ring needles and hernia hook needles into one instrument, simplifying surgical steps and improving surgical efficiency; by controlling the pull rod to open or close the notch on the needle tip, a camera is no longer needed during one-hole surgery, reducing collateral damage; leaving the suture in the abdominal cavity and pulling the suture out of the abdominal cavity are both convenient, shortening surgical time and reducing surgical risks.

[0005] The above approach essentially still confines the suture within a variable-diameter hole, allowing the suture to slide freely within the hole. It cannot achieve active "clamping," especially when releasing the suture end in the abdominal cavity, which still requires the assistance of other instruments or techniques, making the operation inconvenient and potentially damaging to tissues. Existing mechanical clamp designs (linkage, hinge, push-pull rod clamping arm, etc.) are either impossible to manufacture or have extremely low reliability due to the needle body diameter being only 0.8-1.2mm and the inner diameter being even smaller.

[0006] In summary, the present invention provides an anti-slipping puncture hook for high ligation of pediatric hernia sacs to solve the above problems. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide an anti-slip puncture hook for high ligation of pediatric hernia sacs. Its advantages include being able to be processed within an extremely fine needle body, being able to actively clamp and release sutures, being intuitive to operate, and being reliable in preventing slippage.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A non-slip puncture hook for high ligation of pediatric hernia sac, comprising: Handle; A slender hollow needle body, which is fixedly mounted on the top of the hand handle; A puncture assembly is installed at the distal end of the slender hollow needle body. The puncture assembly is used to open and close the puncture tip according to the needs of use during puncture, so as to prevent the ligation suture from slipping. The puncture assembly includes a needle core structure mounted on the inner wall of the distal end of the slender hollow needle body through an elastic layer, a conical supplementary ring fixedly sleeved on the outer wall of the elastic layer, a pressing structure mounted inside the handle, and an opening and closing structure mounted inside the slender hollow needle body.

[0009] By adopting the above technical solution, active clamping and automatic reset are achieved, solving the problem of easy slippage of traditional crochet hooks. Moreover, the overall structure is compact and can be implemented in the body of an extremely fine needle.

[0010] The present invention is further configured such that: the needle core structure includes a first needle core and a second needle core mounted on the inner sidewall of the distal end of the slender hollow needle body through half of the elastic layer, and the bottom opposite sides of the first needle core and the second needle core are respectively provided with separation grooves.

[0011] By adopting the above technical solution, a precise force-bearing point is provided for the extrusion block, making the needle core opening process stable and controllable, while ensuring the synchronicity and symmetry of the opening and closing of the two needle cores.

[0012] The present invention is further configured such that: a reset cavity is provided inside the hand handle, a guide groove is provided on the inner side wall of the reset cavity, and the pressing structure includes a reset plate slidably connected to the inside of the guide groove via a guide block, a reset spring having its two ends respectively fused between the reset plate and the top wall of the reset cavity, a connecting rod fixedly welded to the center hole of the reset plate, and a pressing plate fixedly welded to the bottom of the connecting rod.

[0013] By adopting the above technical solution, the press-reset function is realized. The cooperation between the guide groove and the guide block ensures the linear movement during the pressing process. The reset spring provides a reliable automatic return force, and the operation feel is clear, allowing doctors to easily control the opening and closing of the needle core.

[0014] The present invention is further configured such that the opening and closing structure includes a support rod fixedly welded to the top of the connecting rod and a pressing block fixedly installed at the end of the support rod.

[0015] By adopting the above technical solution, the extrusion block acts directly on the separation tank, resulting in a short transmission path, minimal force loss, and high reliability.

[0016] The present invention is further configured such that the two separation grooves are combined into a conical groove, the extrusion block is hemispherical, and the extrusion block cooperates with the conical groove.

[0017] By adopting the above technical solution, the axial thrust during pressing is efficiently converted into radial spreading force, achieving the largest and most stable needle core opening amplitude with the minimum pressing force. At the same time, the squeezing block can be smoothly withdrawn after release without jamming.

[0018] The present invention is further configured such that: the conical supplement ring is installed at the top of the distal end of the slender hollow needle body, the inner sidewall of the conical supplement ring is in contact with the elastic layer, and the front ends of the first needle core and the second needle core are brought together to form a smooth puncture conical surface when in the closed state.

[0019] By adopting the above technical solution, the needle tip remains intact and the resistance is low during the puncture process, while the elastic layer is not exposed, thus avoiding tissue adhesion or damage.

[0020] The present invention is further configured such that both the elastic layer and the conical supplementary ring are made of medical-grade silicone.

[0021] By adopting the above technical solution, it has good elastic recovery ability, biocompatibility and flexibility, can provide stable needle core closure force for a long time, and will not cause hard damage to surrounding tissues.

[0022] The present invention is further configured such that the inner sidewalls of the first needle core and the second needle core are provided with anti-slip textures, grooves or friction coatings.

[0023] By adopting the above technical solution, the friction between the thread and the suture is increased. When gripping the suture, even if the suture surface is smooth or wetted with liquid, it can still maintain a firm grip, further eliminating the risk of slippage.

[0024] In summary, the beneficial technical effects of the present invention are as follows: This invention connects the first and second needle cores through an elastic layer. Combined with a pressing and opening / closing structure, it achieves stable opening and closing clamping within a needle with an extremely small diameter. It eliminates the need for complex hinge and linkage structures, resulting in low manufacturing difficulty and high reliability. Through the cooperation of the compression block and the conical separation groove, axial pressing force is smoothly converted into radial opening force of the needle core. After releasing the pressure, the elastic layer automatically drives the needle core to close. The operation is intuitive and simple. Using active clamping, the suture is firmly clamped after the needle core closes, and it can withstand a certain amount of tension during needle withdrawal, preventing slippage. The success rate of one-time grasping is close to 100%. The doctor can complete all operations with one hand holding the handle, without the need for laparoscopic instruments or special techniques, reducing the risk of peritoneal abrasion from the lens. When the needle core closes, it forms a complete and smooth puncture cone surface, resulting in low puncture resistance. After closing and clamping the suture, it effectively prevents slippage during needle withdrawal, avoiding tissue damage caused by repeated punctures, and significantly improving the operational efficiency and safety of high ligation of the pediatric hernia sac.

[0025] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the closed end in this invention; Figure 3 For the present invention Figure 2 Enlarged 3D structural diagram at point A; Figure 4 This is a three-dimensional cross-sectional view of the end section in the open state of the present invention; Figure 5 For the present invention Figure 4 Enlarged 3D structural diagram at point B; Figure 6 This is a three-dimensional structural diagram of the disassembled puncture component in this invention; Figure 7 For the present invention Figure 6 Enlarged 3D structural diagram at point C; Figure 8 For the present invention Figure 6 A magnified 3D structural diagram at point D in the diagram.

[0027] The diagram is marked as follows: 1. Handle; 2. Slender hollow needle body; 3. Puncture assembly; 301. Elastic layer; 302. Needle core structure; 3021. First needle core; 3022. Second needle core; 303. Conical supplementary ring; 304. Pressing structure; 3041. Guide block; 3042. Reset plate; 3043. Reset spring; 3044. Connecting rod; 3045. Pressing plate; 305. Opening and closing structure; 3051. Support rod; 3052. Compression block; 4. Separation tank. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Reference Figure 1-8 The present invention discloses an anti-slipping puncture hook for high ligation of pediatric hernia sac, comprising a hand handle 1, a slender hollow needle body 2, and a puncture component 3.

[0030] A slender, hollow needle body 2 is fixedly mounted on the top of the hand handle 1; The puncture component 3 is installed at the distal end of the slender hollow needle body 2. The puncture component 3 is used to open and close the puncture tip according to the needs of use during puncture, so as to prevent the ligation line from slipping. The puncture assembly 3 includes a needle core structure 302 mounted on the inner wall of the distal end of the slender hollow needle body 2 via an elastic layer 301, a conical supplementary ring 303 fixedly sleeved on the outer wall of the elastic layer 301, a pressing structure 304 mounted inside the hand handle 1, and an opening and closing structure 305 mounted inside the slender hollow needle body 2. The needle core structure 302 includes a first needle core 3021 and a second needle core 3022 mounted on the inner wall of the distal end of the slender hollow needle body 2 through a half elastic layer 301. Separation grooves 4 are respectively opened on the opposite sides of the bottom of the first needle core 3021 and the second needle core 3022.

[0031] When the pressing structure 304 is pressed, it drives the opening and closing structure 305 to move forward, opening the two needle cores to form a clamping groove. When the pressing structure 304 is released, the opening and closing structure 305 retracts, and the two needle cores close under the elastic force of the elastic layer 301 to clamp or release the ligation suture.

[0032] Furthermore, a reset cavity is provided inside the handle 1, and a guide groove is provided on the inner side wall of the reset cavity. The pressing structure 304 includes a reset plate 3042 that is slidably connected to the inside of the guide groove through a guide block 3041, a reset spring 3043 whose two ends are respectively fused between the reset plate 3042 and the top wall of the reset cavity, a connecting rod 3044 that is fixedly welded to the center hole of the reset plate 3042, and a pressing plate 3045 that is fixedly welded to the bottom of the connecting rod 3044.

[0033] Furthermore, the opening and closing structure 305 includes a support rod 3051 fixedly welded to the top of the connecting rod 3044 and a pressing block 3052 fixedly installed at the end of the support rod 3051.

[0034] Furthermore, the two separation grooves 4 are combined into a conical groove, and the extrusion block 3052 is hemispherical, which is matched with the conical groove.

[0035] Furthermore, a conical supplement ring 303 is installed on the top of the distal end of the slender hollow needle body 2. The inner wall of the conical supplement ring 303 is in contact with the elastic layer 301. When the front ends of the first needle core 3021 and the second needle core 3022 are closed, they come together to form a smooth puncture conical surface.

[0036] Furthermore, both the elastic layer 301 and the conical supplementary ring 303 are made of medical-grade silicone.

[0037] Furthermore, the inner walls of both the first needle core 3021 and the second needle core 3022 are provided with anti-slip textures, grooves, or friction coatings.

[0038] Working principle: During use, the ligation suture is released into the abdominal cavity and brought out from the outside through two puncture operations. During the first puncture, the doctor holds the handle 1. Without pressing the pressure plate 3045, the first needle core 3021 and the second needle core 3022 are kept together by the elastic force of the elastic layer 301, and the needle tip forms a complete and smooth puncture cone surface, which can smoothly complete the abdominal wall puncture operation. The closed first needle core 3021 and the second needle core 3022 clamp the ligation suture and enter the abdominal cavity through the abdominal wall. When the puncture is in place and the ligation needs to be loosened, press down on the pressing plate 3045. The pressing plate 3045 drives the connecting rod 3044, the support rod 3051 and the squeezing block 3052 to move forward along the guide groove. The hemispherical squeezing block 3052 moves forward along the assembled conical groove, converting the axial pressing force into a radial spreading force, which spreads the first needle core 3021 and the second needle core 3022 to both sides. The needle tip opens to form an opening to accommodate the suture. After the ligation end loses its clamping, it remains in the abdominal cavity. After the pressing plate 3045 is released, the reset spring 3043 drives the squeezing block 3052 to retract, and the elastic layer 301 and the conical supplementary ring 303 close the first needle core 3021 and the second needle core 3022, thus withdrawing the needle body; During the second puncture, when the ligation suture needs to be retrieved after the puncture is in place, press the needle core in the same way to open it and form a suture clamping groove. After the suture end in the abdominal cavity is introduced, release the pressing plate 3045. The needle core closes under the action of the elastic layer 301. The anti-slip texture / groove / friction coating on the inner wall enhances the clamping force and prevents slippage during needle withdrawal. After the ligation suture is brought out, press the pressing plate 3045 again to open the needle core and release the ligation suture, leading the ligation suture out of the body. Finally, tighten and tie the knot to complete the ligation of the inner ring. The entire operation can be completed without the assistance of additional instruments, and the active clamping and release can be completed. The structure is compact and reliable, and can be adapted to extremely fine puncture needles. The operation is convenient and reduces the risk of tissue damage.

[0039] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A non-slip puncture hook for high ligation of the pediatric hernia sac, characterized in that: include: Handle (1); A slender hollow needle body (2) is fixedly mounted on the top of the hand handle (1); The puncture assembly (3) is installed at the distal end of the slender hollow needle body (2). The puncture assembly (3) is used to open and close the puncture tip according to the usage requirements during puncture, so as to prevent the ligation line from slipping. The puncture assembly (3) includes a needle core structure (302) mounted on the inner wall of the distal end of the slender hollow needle body (2) through an elastic layer (301), a conical supplementary ring (303) fixedly sleeved on the outer wall of the elastic layer (301), a pressing structure (304) mounted inside the hand handle (1), and an opening and closing structure (305) mounted inside the slender hollow needle body (2).

2. The anti-slip puncture hook needle for high ligation of pediatric hernia sac according to claim 1, characterized in that, The needle core structure (302) includes a first needle core (3021) and a second needle core (3022) mounted on the inner wall of the distal end of the slender hollow needle body (2) through half of the elastic layer (301). Separation grooves (4) are respectively opened on the opposite sides of the bottom of the first needle core (3021) and the second needle core (3022).

3. The anti-slip puncture hook needle for high ligation of pediatric hernia sac according to claim 2, characterized in that, The hand handle (1) has a reset cavity inside, and a guide groove is provided on the inner side wall of the reset cavity. The pressing structure (304) includes a reset plate (3042) slidably connected to the inside of the guide groove through a guide block (3041), a reset spring (3043) with both ends respectively fused between the reset plate (3042) and the top wall of the reset cavity, a connecting rod (3044) fixedly welded to the center hole of the reset plate (3042), and a pressing plate (3045) fixedly welded to the bottom of the connecting rod (3044).

4. The anti-slip puncture hook needle for high ligation of pediatric hernia sac according to claim 3, characterized in that, The opening and closing structure (305) includes a support rod (3051) fixedly welded to the top of the connecting rod (3044) and a pressing block (3052) fixedly installed at the end of the support rod (3051).

5. The anti-slip puncture hook needle for high ligation of pediatric hernia sac according to claim 4, characterized in that, The two separation grooves (4) are combined into a conical groove, and the extrusion block (3052) is hemispherical and the extrusion block (3052) cooperates with the conical groove.

6. The anti-slip puncture hook needle for high ligation of pediatric hernia sac according to claim 2, characterized in that, The conical supplement ring (303) is installed at the top of the distal end of the slender hollow needle body (2). The inner sidewall of the conical supplement ring (303) is in contact with the elastic layer (301). The front ends of the first needle core (3021) and the second needle core (3022) are brought together in the closed state to form a smooth puncture conical surface.

7. The anti-slip puncture hook needle for high ligation of pediatric hernia sac according to claim 1, characterized in that, Both the elastic layer (301) and the conical supplementary ring (303) are made of medical-grade silicone.

8. The anti-slip puncture hook needle for high ligation of pediatric hernia sac according to claim 2, characterized in that, The inner walls of the first needle core (3021) and the second needle core (3022) are provided with anti-slip textures, grooves or friction coatings.

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