Tissue suture gun

Abstract

The utility model discloses a tissue suture gun which comprises a suture gun handle, a gun barrel and a gun head, the suture gun handle comprises a front handle, a rear handle and a trigger, the gun head comprises a lower clamping plate and an upper clamping plate rotationally connected with the lower clamping plate, the upper clamping plate is in transmission connection with the trigger, and a guide part is arranged on the lower clamping plate and rotationally connected with the lower clamping plate through a rotating shaft. A push-pull rod is installed on the gun barrel in a sliding mode, one end of the push-pull rod is connected with the guide part, the other end of the push-pull rod is provided with an adjusting handle, the adjusting handle is connected with a spring, and in the initial state, the push-pull rod is tightly jacked and limited through the spring so that the protruding structure of the guide part can be higher than the lower clamping plate. The adjusting handle can be shifted to compress the spring, the push-pull rod moves backwards to drive the guide portion to rotate relative to the lower clamping plate, the protruding structure on the guide portion is lower than the plate face of the lower clamping plate, the gun head is easily taken out, the rotating angle of the upper clamping plate can be increased, adaptability of the tissue suture gun to thick tissue is improved, and operation of a doctor is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a tissue suture gun capable of suturing and repairing cartilage tissue, and can be specifically applied to suture the meniscus during arthroscopic surgery. Background Art

[0002] Injuries to cartilage tissues such as the meniscus are common types of sports injuries, mostly caused by torsional external forces. With the in-depth study of the anatomy, physiological functions, and post-injury repair mechanisms of cartilage tissues such as the meniscus, the treatment methods for cartilage tissues such as the meniscus have changed from initial subtotal resection and total resection to repairing cartilage tissues such as the meniscus. Suturing and repairing of cartilage tissues such as the meniscus is one of the main current repair methods.

[0003] Chinese invention patent CN202010588848.6 discloses a suture gun handle and a tissue suture gun, and this tissue suture gun can be applied in the process of suturing and repairing cartilage tissues such as the meniscus.

[0004] The suture gun handle disclosed in the above patent document includes a front gun handle, a rear gun handle, a trigger, and a penetration joint. Among them: an installation hole and a penetration hole are provided on the front gun handle. The installation hole is used for installing the gun rod, and the penetration hole communicates with the installation hole. The penetration hole and the installation hole allow the suture needle to penetrate in sequence along the insertion direction; the rear gun handle is movably arranged on one side of the front gun handle close to the penetration hole, and when the rear gun handle moves, it can push the suture needle to move along the insertion direction; the trigger is movably arranged on the front gun handle, and when the trigger moves, it can drive the gun head connected to it through transmission to act; the penetration joint is arranged at one end of the penetration hole far from the installation hole, the penetration joint allows the suture needle to penetrate, and the penetration joint can be connected to the disinfection pipeline.

[0005] The tissue suture gun disclosed in the above patent document includes: a gun rod, a gun head, and a suture gun handle. One end of the gun rod is fixedly arranged in the installation hole on the front gun handle, and the gun head is arranged at the end of the gun rod far from the front gun handle. When the gun rod is fixedly arranged in the installation hole, the gun head is in transmission connection with the trigger; the gun head is in the form of a duckbill clip, and the gun head includes an upper splint and a lower splint. The lower splint is fixedly arranged at the end of the gun rod far from the front gun handle, the upper splint is rotatably arranged on the lower splint, and the upper splint is in transmission connection with the trigger. When the trigger moves, it can drive the upper splint to rotate and clamp the tissue to be sutured; a guiding part is provided on the lower splint, and a penetration hole is provided on the upper splint. When the rear gun handle pushes the suture needle to move along the insertion direction, the guiding part guides the needle tip of the suture needle to penetrate out from the penetration hole. During the suture repair process of the meniscus, it is necessary to first pull the trigger to drive the upper splint of the gun head to rotate and open to clamp the meniscus to be sutured, and then drive the suture needle to carry the suture thread to penetrate out from the penetration hole and pierce into the meniscus through the rear gun handle.

[0006] In addition, Chinese invention patent CN201910429554.6 discloses a device for meniscus suture, which is also a tissue suture gun. It mainly includes a front gun handle, a rear gun handle, a needle core and a duckbill clip; the front gun handle and the rear gun handle are movably connected to form a pistol grip structure, and a moving guiding mechanism and an elastic reset mechanism are provided between them. The moving guiding mechanism is used to guide the rear gun handle to move towards the front gun handle when a holding force is applied, and the elastic reset mechanism is used to drive the rear gun handle to perform a reset movement when the holding force is released; the needle core is mainly composed of a needle seat, a needle rod and a puncture needle connected in sequence. The needle seat is connected to the rear gun handle, and the puncture needle is located on the side of the front gun handle away from the rear gun handle; the duckbill clip is located on the side of the front gun handle away from the rear gun handle, and is used to clamp the tissue to be sutured. It includes an upper splint and a lower splint. A puncture needle channel for the puncture needle to pass through is provided in the lower splint, and a puncture needle through hole for the puncture needle to pass through is provided in the upper splint.

[0007] The device disclosed in this patent document uses the opening angle of the upper and lower splints of the head duckbill clip to directly bite the tissue to be sutured, which is convenient to operate and can shorten the operation time; and when the device reaches the designated position, the front and rear gun handles can be tightly held to directly activate the needle core device, and the puncture needle can pass through the tissue with the thread to quickly suture.

[0008] It can be seen that the technical solutions disclosed in the above two patent documents can both achieve rapid meniscus suture. However, in the actual application process, the technical solutions disclosed in these two patent documents still have the following defects:

[0009] In the technical solutions disclosed in the above two patent documents, guiding parts are provided on the lower splints of the gun heads. Although the guiding parts can guide the needle tip of the suture needle to penetrate obliquely upward to assist in suturing, this is a convex structure, and a guiding slope will be formed relative to the upper plate surface of the lower splint. For the meniscus with relatively thick tissue, this convexity often gets stuck in the meniscus after the gun head clamps the meniscus, making it difficult for the gun head to escape, which brings trouble to the doctor's surgical operation. Therefore, it is necessary to propose a new technical solution to solve the problems existing in the prior art. Utility Model Content

[0010] The present utility model provides a tissue suture gun to solve the problem that the existing tissue suture gun is difficult to adapt to relatively thick tissue, is easy to get stuck, and causes inconvenient operation.

[0011] To achieve the above object, the present utility model provides the following technical solutions:

[0012] The utility model provides a tissue suturing gun, comprising a suturing gun handle, a gun barrel and a gun head. The suturing gun handle comprises a front handle, a rear handle and a trigger. A needle hole and a mounting hole connected to the needle hole are arranged at one end of the front handle. The mounting hole is used to install the gun barrel. A mounting seat for fitting a suturing needle is arranged at one end of the rear handle. The needle hole and the mounting hole allow the suturing needle to be sequentially inserted into the gun head along an insertion direction. The gun head is in the shape of a duckbill clamp. The gun head comprises a lower clamp and an upper clamp rotatably connected to the lower clamp. The lower clamp is fixedly arranged at one end of the gun barrel. The upper clamp The plate is connected to the trigger transmission, a guiding part is arranged on the lower clamping plate, a through hole is arranged on the upper clamping plate, a mounting groove is arranged on the lower clamping plate, a rotating shaft is arranged in the mounting groove, and the guiding part is rotatably connected with the lower clamping plate through the rotating shaft; a first guiding groove is arranged on the side wall of the gun barrel, a push-pull rod is adapted to be slidably installed in the first guiding groove, one end of the push-pull rod is connected to the guiding part, and an adjusting handle is arranged on the other end, a spring is arranged on the groove wall of the first guide groove close to the adjusting handle, the guiding part can rotate relative to the lower clamping plate under the pushing and pulling action of the push-pull rod, and the spring is used to tighten and limit the push-pull rod.

[0013] Furthermore, in the above technical solution, the adjusting handle is a rod extending outward from the first guide groove, and the end of the adjusting handle facing away from the push-pull rod is connected to the spring; the length direction of the spring is the same as the length direction of the push-pull rod, and the spring tightens and limits the push-pull rod in the initial state, so that the raised structure on the guide part protrudes from the upper surface of the lower clamp; when the push-pull rod is moved toward the handle of the suture gun by the adjusting handle, the push-pull rod compresses the spring, and the push-pull rod pulls the guide part to rotate with the rotating axis as the rotation center, so that the raised structure on the guide part rotates below the upper surface of the lower clamp.

[0014] Furthermore, a second guide groove and a third guide groove adjacent to the second guide groove are provided on the side wall of the gun barrel, the second guide groove is connected to the third guide groove, and the second guide groove is arranged opposite to the first guide groove; a front half adjustment rod and a rear half adjustment rod are adapted and slidably installed in the second guide groove, the front half adjustment rod and the rear half adjustment rod are arranged relatively spaced in the second guide groove, an intermediate adjustment rod is adapted and slidably installed in the third guide groove, the front half adjustment rod and the rear half adjustment rod are connected through the intermediate adjustment rod, a long strip adjustment groove is provided on the intermediate adjustment rod, a fastening screw is slidably arranged in the adjustment groove, and the fastening screw is used to fasten the intermediate adjustment rod to the front half adjustment rod.

[0015] Further, a connection groove is provided at one end of the upper clamping plate. A connection hole is provided at the end of the connection groove away from the upper clamping plate. A rotating shaft is inserted through the connection hole. The upper clamping plate is rotatably connected to the lower clamping plate through the rotating shaft. The end of the front half adjusting rod facing away from the rear half adjusting rod forms a rotation driving groove. The rotation driving groove is a groove opened on the lower surface of the front half adjusting rod. The front half adjusting rod extends into the connection groove of the upper clamping plate, and the bottom of the rotation driving groove is slidably connected to the rotating shaft. The end of the rear half adjusting rod facing away from the front half adjusting rod is in transmission connection with the trigger. Pulling the trigger can drive the front half adjusting rod to slide along the second guide groove towards the suture gun handle through the rear half adjusting rod. During the sliding process of the front half adjusting rod, a sliding friction is formed between the bottom of the rotation driving groove and the rotating shaft, driving the rotating shaft to rotate, thereby realizing the rotation and opening of the upper clamping plate relative to the lower clamping plate.

[0016] Further, the front half adjusting rod and the rear half adjusting rod are respectively hollow rods. The suture needle can be inserted into the rear half adjusting rod and the front half adjusting rod in sequence from the needle-piercing hole and extend out of the front half adjusting rod to the guiding part. A hook wire groove is provided at one end of the suture needle penetrating into the guiding part. A connecting seat is provided at the other end of the suture needle. A hanging groove is opened on the connecting seat, and the hanging groove is adaptively clamped with the fixing column on the mounting seat arranged on the rear handle.

[0017] Further, a baffle is rotatably arranged at one end of the upper clamping plate away from the connection groove. The baffle is correspondingly arranged above the guiding part. The baffle is rotatably connected to the upper clamping plate through a rotating shaft and a torsion spring. When the baffle rotates towards the direction away from the lower clamping plate, a piercing hole is formed on the upper clamping plate. Insert the suture needle into the guiding part and hang the suture thread on the hook wire groove. Push the rear handle to make the suture needle move along the insertion direction. The suture needle moves obliquely upwards under the guiding action of the guiding part and pushes the baffle to rotate. The suture needle carries the suture thread and penetrates out of the piercing hole. After the rear handle is reset, the suture needle retracts to the guiding part, and the baffle resets under the action of the torsion spring.

[0018] Further, one end of the rear handle is used for adaptively installing the suture needle. The other end of the rear handle is hinged to one end of the front handle. The other end of the front handle is provided with a needle-piercing hole and a mounting hole, and the needle-piercing hole and the mounting hole are in the same direction as the insertion direction of the suture needle. The trigger is rotatably connected to the end of the front handle provided with the mounting hole, and the trigger is connected to the rear half adjusting rod.

[0019] Further, the distance between the fixing column on the rear handle and the needle-piercing hole on the front handle is adapted to the track length of the suture needle moving out of the piercing hole from the guiding part.

[0020] Compared with the prior art, the utility model has at least the following beneficial effects:

[0021] 1. The utility model is based on further analysis and research of the existing technical problems, and recognizes that the guide part of the existing tissue suturing gun realizes the guiding effect on the suturing needle through the protruding structure thereon, but this protruding structure is easily stuck by thicker tissue, which makes it difficult for the gun head to come out, causing trouble for the doctor's surgical operation. Therefore, the utility model sets the guide part as a rotatable structure, and the guide part is rotatably connected to the lower splint through a rotating shaft, and a push-pull rod is slidably installed on the gun barrel, one end of the push-pull rod is connected to the guide part, and the other end is provided with an adjusting handle, and the adjusting handle is connected to a spring. In the initial state, the push-pull rod is tightened and limited by the spring so that the guide part is limitedly installed on the lower splint, and the protruding structure of the guide part is higher than the lower splint, and the doctor can hold the tissue suturing gun and pull the trigger The gun head clamps the tissue to be sutured. After the suture needle completes puncture and suturing, the doctor can turn the adjusting handle to compress the spring, and the push-pull rod moves backward to drive the guide part to rotate relative to the lower splint, so that the raised structure on the guide part is lower than the board surface of the lower splint, and the gun head can be easily taken out. The doctor releases the adjusting handle, and the push-pull rod automatically resets under the action of the spring elastic force, that is, the guide part also rotates and resets to the initial state, and the doctor can hold the tissue suturing gun and continue the suturing operation. It can be seen that the utility model arranges the guide part as a rotatable structure, so that after the guide part completes the guiding work in the initial state, the rotatable position makes the raised structure thereon lower than the board surface of the lower splint, and the gun head can be easily taken out, thereby improving the adaptability of the tissue suturing gun to thicker tissues, avoiding the gun head from getting stuck, and facilitating the doctor's operation.

[0022] 2. The gun barrel of the tissue suturing gun provided by the utility model is slidably provided with a front half adjustment rod, a rear half adjustment rod and an intermediate adjustment rod connecting the above two adjustment rods and being misaligned with the above two adjustment rods. The intermediate adjustment rod is provided with a fastening screw for tightening or releasing the front half adjustment rod. The other end of the front half adjustment rod is provided with a rotation drive groove, which can be slidably connected with the rotating shaft on the upper clamping plate. The utility model can adjust the sliding distance between the rotation drive groove and the rotating shaft by adjusting the position of the front half adjustment rod front and back, thereby controlling the rotation angle of the rotating shaft. The rotation angle of the upper clamping plate of the traditional tissue suturing gun is generally about 60°, and the utility model can increase the rotation angle of the upper clamping plate to 90° through structural improvement. Of course, the structure proposed by the utility model can also be used to produce a tissue suturing gun with an upper clamping plate rotation angle greater than 90°, but since it is difficult to achieve the purpose of occlusal clamping after it is greater than 90°, it has no application significance in practice. Therefore, the utility model increases the rotation angle of the upper clamping plate through structural improvement, so that it can better adapt to thicker tissues and improve the practicality of the tissue suturing gun.

[0023] 3. The distance between the fixing post on the rear handle and the needle-passing hole on the front handle of the tissue suture gun provided by the present utility model is adapted to the track length of the suture needle moving out of the passing hole on the upper clamping plate from the guiding part. Since the present utility model increases the rotation angle of the upper clamping plate, therefore, compared with the traditional tissue suture gun, the track length of the suture needle in the present utility model is longer. Therefore, the distance between the fixing post on the rear handle and the needle-passing hole on the front handle of the tissue suture gun in the present utility model is larger than that of the traditional tissue suture gun. In this way, the length of the suture needle moving out of the passing hole on the upper clamping plate from the guiding part can be increased, adapting to the rotation angle of the upper clamping plate and ensuring the suture effect.

[0024] 4. The tissue suture gun provided by the present utility model is made of metals such as stainless steel and has sufficient structural strength. Therefore, during specific processing, the thickness of the lower clamping plate can be appropriately reduced so that it can adapt to the minimum joint clearance of the human body and facilitate the insertion operation of the gun head. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. It should be understood that the specific shapes and structures shown in the drawings generally should not be regarded as limiting conditions when implementing the present utility model; for example, those skilled in the art are capable of making conventional adjustments or further optimizations to the addition / deletion / attribution division of certain units (components), specific shapes, positional relationships, connection methods, dimensional proportional relationships, etc. based on the technical concepts disclosed in the present utility model and the exemplary drawings.

[0026] Figure 1 FIG. is a schematic diagram of the overall structure of the tissue suture gun provided by the present utility model in an embodiment, where the upper clamping plate of the gun head rotates and opens relative to the lower clamping plate;

[0027] Figure 2 is Figure 1 a schematic diagram of the open state of the gun head part;

[0028] Figure 3 FIG. is a schematic diagram of the overall structure of the tissue suture gun provided by the present utility model in an embodiment, where the upper clamping plate of the gun head closes relative to the lower clamping plate;

[0029] Figure 4 is Figure 3 a schematic diagram of the closed state of the gun head part;

[0030] Figure 5Schematic diagram of the structure of the tissue suture gun provided by the present utility model in an embodiment. In the figure, a part of the outer shell of the suture gun handle is removed to show the connection state of the internal related structures;

[0031] Figure 6 Schematic diagram of the structure of the gun barrel of the tissue suture gun provided by the present utility model in an embodiment from a bottom view angle, mainly showing the installation position of the push-pull rod structure;

[0032] Figure 7 Schematic diagram of the structure of the gun barrel of the tissue suture gun provided by the present utility model in an embodiment from a top view angle, mainly showing the related structure of the adjusting rod for adjusting the rotation angle of the upper splint;

[0033] Figure 8 Schematic diagram of the internal connection structure after removing a part of the outer shell of the gun head of the tissue suture gun provided by the present utility model in an embodiment.

[0034] Explanation of reference numerals:

[0035] 1. Suture gun handle; 11. Front handle; 111. Needle-passing hole; 112. Installation hole; 12. Rear handle; 121. Fixed column; 13. Trigger;

[0036] 2. Gun barrel; 21. Push-pull rod; 211. Adjusting handle; 22. Spring; 23. Front half adjusting rod; 231. Rotation driving groove; 24. Rear half adjusting rod; 25. Intermediate adjusting rod; 26. Tightening screw;

[0037] 3. Gun head; 31. Lower splint; 311. Guide part; 312. Rotation shaft; 32. Upper splint; 321. Connection groove; 322. Rotating shaft; 323. Baffle; 324. Torsion spring;

[0038] 4. Suture needle; 41. Groove for hooking thread; 42. Hanging groove. Detailed implementation manners

[0039] The present utility model will be further described in detail below with reference to the accompanying drawings through specific embodiments.

[0040] In the description of the present utility model: Unless otherwise specified, the terms "first", "second", etc. in the present utility model are intended to distinguish the objects being referred to, and do not have special meanings in terms of technical connotations (for example, it should not be understood as emphasizing the importance degree or order, etc.). Expressions such as "including", "comprising", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).

[0041] The terms such as "upper", "lower", "front", "back", "middle" etc. used in this utility model are usually used to facilitate intuitive understanding by referring to the drawings, and are not absolute limitations on the positional relationship in the actual product. Without departing from the technical concept disclosed in this utility model, changes in these relative positional relationships should also be regarded as the scope of this utility model.

[0042] Embodiment 1

[0043] This embodiment provides a tissue suturing gun that can suturing and repairing cartilage tissue, for example, it can be used to suturing the meniscus in arthroscopic surgery. Figure 1 , 3 The tissue suturing gun mainly includes a suturing gun handle 1, a gun barrel 2 and a gun head 3. The suturing gun handle 1 is mainly used for holding operation, on which the gun barrel 2 is installed, and the gun head 3 is arranged at the far end of the gun barrel 2. When the tissue suturing gun is used, it needs to cooperate with the insertion of the suturing needle 4 and the hanging of the suture thread to complete the suturing operation.

[0044] The above-mentioned suture gun handle 1 mainly includes a front handle 11, a rear handle 12 and a trigger 13. A needle hole 111 and a mounting hole 112 connected to the needle hole 111 are arranged at one end of the front handle 11. The mounting hole 112 is used to install the gun barrel 2. A mounting seat for mounting the suture needle 4 is arranged at one end of the rear handle 12. The other end of the rear handle 12 is hinged to one end of the front handle 11. The needle hole 111 and the mounting hole 112 are arranged at the other end of the front handle 11. The needle hole 111 and the mounting hole 112 are in the same insertion direction as the suture needle 4. The trigger 13 is rotatably connected to the end of the front handle 11 provided with the mounting hole 112. The above-mentioned suture needle 4 can be inserted into the gun head 3 from the needle hole 111, the mounting hole 112 and the gun barrel 2 in sequence, as shown in FIG. Figure 1 , 2 .

[0045] See also Figure 2 , 4 The gun head 3 in this embodiment is in the shape of a duckbill clamp, mainly comprising a lower clamping plate 31 and an upper clamping plate 32 rotatably connected to the lower clamping plate 31. The lower clamping plate 31 is fixedly arranged at one end of the gun rod 2, and the upper clamping plate 32 is transmission-connected to the trigger 13. A guide portion 311 is arranged on the lower clamping plate 31, a through hole is arranged on the upper clamping plate 32, and a mounting groove is arranged on the lower clamping plate 31. A rotating shaft 312 is arranged in the mounting groove, and the guide portion 311 is rotatably connected to the lower clamping plate 31 through the rotating shaft 312. See Figure 6A first guide groove is provided on the side wall of the gun barrel 2, in which a push-pull rod 21 is slidably installed. One end of the push-pull rod 21 is connected to the guide portion 311, and an adjusting handle 211 is provided at the other end. A spring 22 is provided on the groove wall of the first guide groove near the adjusting handle 211. The guide portion 311 can rotate relative to the lower clamping plate 31 under the push-pull action of the push-pull rod 21. The spring 22 is used to tighten and limit the push-pull rod 21. In addition, the spring can automatically reset after being compressed, which can assist the automatic reset of the guide portion in the utility model and simplify the operation.

[0046] In this embodiment, the adjustment handle 211 arranged at one end of the push-pull rod 21 is a rod extending outward from the first guide groove. Preferably, the push-pull rod 21 and the adjustment handle 211 constitute an L-shaped structure, and the end of the adjustment handle 211 facing away from the push-pull rod 21 is connected to the spring 22; the length direction of the spring 22 is the same as the length direction of the push-pull rod 21.

[0047] The guide portion 311 on the lower splint 31 is set to a rotatable structure in the utility model. In the initial state, the push-pull rod 21 is tightened and limited by the spring 22 so that the guide portion 311 is limitedly installed on the lower splint 31. The raised structure of the guide portion 311 is higher than the lower splint 31. The doctor can hold the tissue suturing gun and pull the trigger 13 to make the gun head 3 clamp the tissue to be sutured. After the suture needle 4 completes the puncture and suturing, the doctor can turn the adjusting handle 211 to compress the spring 22, and the push-pull rod 21 moves backward to drive the guide portion 311 to rotate relative to the lower splint 31, so that the raised structure on the guide portion 311 is lower than the board surface of the lower splint 31, and the gun head 3 is easily taken out. Then the doctor releases the adjusting handle 211, and the push-pull rod 21 automatically resets under the elastic force of the spring 22, that is, the guide portion 311 also rotates and resets to the initial state, and the doctor can hold the tissue suturing gun and continue the suturing operation. It can be seen that the utility model sets the guide part 311 as a rotatable structure, so that after the guide part 311 completes the guiding work in the initial state, the rotatable position makes the raised structure thereon lower than the plate surface of the lower clamping plate 31, and the gun head 3 can be easily taken out, thereby improving the adaptability of the tissue suturing gun to thicker tissues, avoiding the gun head 3 from getting stuck, and facilitating the doctor's operation.

[0048] Embodiment 2

[0049] This embodiment provides a tissue suturing gun, including all the contents recorded in the first embodiment. Compared with the first embodiment, the rotation angle of the upper clamping plate 32 of the gun head 3 is improved on the basis of the first embodiment, and the related structural improvements are as follows:

[0050] In this embodiment, see Figure 7A second guide groove opposite to the first guide groove and a third guide groove adjacent to the second guide groove are provided on the side wall of the gun barrel 2, and the second guide groove is connected to the third guide groove. Specifically, the first guide groove is provided below the gun barrel 2, the second guide groove is provided above the gun barrel 2, and the third guide groove is provided in front of the gun barrel 2 and is adjacent to and connected to the second guide groove.

[0051] The front half adjusting rod 23 and the rear half adjusting rod 24 are adapted and slidably installed in the above-mentioned second guide groove, and the front half adjusting rod 23 and the rear half adjusting rod 24 are arranged relatively spaced in the second guide groove. The middle adjusting rod 25 is adapted and slidably installed in the third guide groove, and the front half adjusting rod 23 and the rear half adjusting rod 24 are connected through the middle adjusting rod 25. A long strip-shaped adjusting groove is opened on the middle adjusting rod 25, and a fastening screw 26 is slidably arranged in the adjusting groove. The fastening screw 26 is used to fasten the middle adjusting rod 25 and the front half adjusting rod 23 together. A plurality of threaded holes can be set at the end of the front half adjusting rod 23 near the middle adjusting rod 25. After moving the front half adjusting rod 23, it can be threadedly fastened to the corresponding threaded hole through the fastening screw 26.

[0052] In this embodiment, see Figure 8 A connecting groove 321 is provided at one end of the upper clamping plate 32, and a connecting hole is provided at the end of the connecting groove 321 away from the upper clamping plate 32. A rotating shaft 322 is passed through the connecting hole. The upper clamping plate 32 is rotatably connected to the lower clamping plate 31 through the rotating shaft 322, and the upper clamping plate 32 is fixed on the rotating shaft 322.

[0053] In order to realize the transmission connection between the front half adjustment rod 23 and the upper clamping plate 32, the utility model sets a rotation driving groove 231 at the end of the front half adjustment rod 23 away from the rear half adjustment rod 24. The rotation driving groove 231 is a long strip groove opened on the lower surface of the front half adjustment rod 23. The length direction of the long strip groove is consistent with the length direction of the front half adjustment rod 23. The groove bottom of the rotation driving groove 231 should be set to a rough surface to increase the sliding friction. The front half adjustment rod 23 extends into the connection groove 321 of the upper clamping plate 32, and the groove bottom of the rotation driving groove 231 is slidably connected with the rotating shaft 322 to generate sliding friction. The end of the rear half adjustment rod 24 away from the front half adjustment rod 23 is in transmission connection with the trigger 13. Pulling the trigger 13 can drive the front half adjustment rod 23 to slide along the second guide groove toward the suture gun handle 1 through the rear half adjustment rod 24. During the sliding process of the front half adjustment rod 23, the bottom of the rotating driving groove 231 forms a sliding friction with the rotating shaft 322, driving the rotating shaft 322 to rotate, thereby realizing the upper clamping plate 32 to rotate and open relative to the lower clamping plate 31. During the resetting process of the trigger 13, the rear half adjustment rod 24 drives the front half adjustment rod 23 to slide along the second guide groove toward the gun head. During the sliding process of the front half adjustment rod 23, the bottom of the rotating driving groove 231 forms a sliding friction with the rotating shaft 322, driving the rotating shaft 322 to rotate, thereby realizing the upper clamping plate 32 to rotate and close relative to the lower clamping plate 31.

[0054] Therefore, the utility model can adjust the sliding distance between the rotation driving groove 231 and the rotating shaft 322 by adjusting the position of the front half adjusting rod 23 back and forth, thereby controlling the rotation angle of the rotating shaft 322. The rotation angle of the upper clamping plate 32 of the traditional tissue suture gun is generally about 60°. However, through structural improvement, the rotation angle of the upper clamping plate 32 of the utility model can be increased to 90°, enabling it to better adapt to thicker tissues and improving the practicability of the tissue suture gun.

[0055] Since the rotation angle of the upper clamping plate 32 is increased in this embodiment, compared with the traditional tissue suture gun, the piercing trajectory length of the suture needle 4 in the utility model is longer. Therefore, the distance between the fixing column 121 for clamping the suture needle 4 on the rear handle 12 of the tissue suture gun and the needle-passing hole 111 on the front handle 11 is increased in the utility model. In this way, the length of the suture needle 4 moving out of the piercing hole on the upper clamping plate 32 from the guiding portion 311 can be increased to adapt to the rotation angle of the upper clamping plate 32 and ensure the suture effect.

[0056] In this embodiment, the front half adjusting rod 23 and the rear half adjusting rod 24 are respectively hollow rods. The suture needle 4 can be inserted into the rear half adjusting rod 24 and the front half adjusting rod 23 in sequence from the needle-passing hole 111 and extend out of the front half adjusting rod 23 to the guiding portion 311, as Figure 1 , 8 .

[0057] In this embodiment, referring to Figure 8 , a hook groove 41 is provided at one end of the suture needle 4 inserted into the guiding portion 311; a connecting seat is provided at the other end of the suture needle 4, and a hanging groove 42 is formed on the connecting seat, as Figure 5 . The hanging groove 42 is adaptively clamped with the fixing column 121 provided on the mounting seat of the rear handle 12 and can be manually installed and disassembled.

[0058] In this embodiment, referring to FIGS. 4 and 8, a baffle 323 is rotatably provided at one end of the upper clamping plate 32 away from the connecting groove 321, and the baffle 323 is correspondingly provided above the guiding portion 311. Continuing to refer to Figure 8 , the baffle 323 is rotatably connected to the upper clamping plate 32 through a rotating shaft 322 and a torsion spring 324. When the baffle 323 rotates away from the lower clamping plate 31, a piercing hole is formed on the upper clamping plate 32.

[0059] During use, the suture needle 4 is inserted into the guiding portion 311 and the suture thread is hung on the hook groove 41. The rear handle 12 is pushed to make the suture needle 4 move along the insertion direction. Under the guiding action of the guiding portion 311, the suture needle 4 moves obliquely upward and pushes the baffle 323 to rotate. The suture needle 4 carries the suture thread out of the piercing hole. After the rear handle 12 is reset, the suture needle 4 retracts to the guiding portion 311, and the baffle 323 is reset under the action of the torsion spring 324.

[0060] Therefore, through the relevant structural design of the front half adjusting rod 23, the rear half adjusting rod 24, and the middle adjusting rod 25 that connects the two aforementioned adjusting rods and is arranged offset from the two aforementioned adjusting rods, the present utility model realizes an increase in the rotation angle of the upper clamping plate 32. Moreover, by expanding the distance between the fixing post 121 on the rear handle 12 and the needle-passing hole 111 on the front handle 11 of the tissue suture gun in the present utility model, the trajectory length of the suture needle 4 moving out of the passing hole on the upper clamping plate 32 from the guiding portion 311 is increased, ensuring the suture effect. Additionally, the increase in the rotation angle of the upper clamping plate 32 can further improve the adaptability of the tissue suture gun to thicker tissues.

[0061] In the present utility model, the suture gun handle 1, the gun barrel 2, and the gun head 3 of the tissue suture gun can be made of stainless steel, which has sufficient structural strength. Therefore, during specific processing, the thickness of the lower clamping plate 31 can be appropriately reduced to enable it to adapt to the smallest joint space of the human body, facilitating the insertion operation of the gun head 3 and enhancing the application flexibility of the tissue suture gun.

[0062] In summary, compared with traditional tissue suture guns, in the present utility model, the guiding portion is set as a rotatable structure. In the initial state, the push-pull rod is tightly limited by the spring, and the guiding portion is limited and installed on the lower clamping plate. The convex structure of the guiding portion is higher than the lower clamping plate. After the doctor holds the tissue suture gun and pulls the trigger to clamp the tissue to be sutured and completes the puncture suture with the suture needle, the adjusting handle can be toggled to compress the spring. The rearward movement of the push-pull rod drives the guiding portion to rotate relative to the lower clamping plate, making the convex structure on the guiding portion lower than the plate surface of the lower clamping plate, avoiding the problem of thicker tissues being stuck by the convex structure, and the gun head can be easily removed. After releasing the adjusting handle, the push-pull rod automatically resets under the elastic force of the spring, that is, the guiding portion also rotates and resets to the initial state, and the doctor can continue the suture operation while holding the tissue suture gun. Therefore, the present utility model is convenient to operate and use, and can automatically rotate and reset to ensure the continuity of the operation.

[0063] In addition, a front half adjusting rod, a rear half adjusting rod, and a middle adjusting rod that connects the two aforementioned adjusting rods and is arranged offset from the two aforementioned adjusting rods are slidably arranged on the gun barrel of the tissue suture gun provided by the present utility model. One end of the front half adjusting rod is provided with a rotation driving groove, which can be slidably connected to the rotating shaft on the upper clamping plate to generate sliding friction and drive the rotating shaft to rotate through the sliding friction, causing the upper clamping plate to rotate. During actual application, the position of the front half adjusting rod can be manually adjusted back and forth as needed, thereby adjusting the sliding distance between the rotation driving groove and the rotating shaft, and thus controlling the rotation angle of the rotating shaft. In a preferred embodiment, through structural improvement, the present utility model can increase the rotation angle of the upper clamping plate to 90°, enabling it to better adapt to thicker tissues and enhancing the practicality of the tissue suture gun.

[0064] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written out should also be considered to be within the scope described in this specification.

[0065] In the foregoing, the present utility model has been described in a relatively specific and detailed manner through general descriptions and specific embodiments. It should be understood that based on the technical concept of the present utility model, several conventional adjustments or further innovations can also be made to these specific embodiments; but as long as they do not depart from the technical concept of the present utility model, the technical solutions obtained through these conventional adjustments or further innovations also fall within the scope of protection of the claims of the present utility model.

Claims

1. A tissue suturing gun, comprising a suturing gun handle, a gun barrel and a gun head, the suturing gun handle comprising a front handle, a rear handle and a trigger, one end of the front handle is provided with a needle hole and a mounting hole connected to the needle hole, the mounting hole is used to install the gun barrel, one end of the rear handle is provided with a mounting seat for adapting to install a suturing needle, the needle hole and the mounting hole allow the suturing needle to be inserted into the gun head in sequence along the insertion direction, the gun head is in the shape of a duckbill clamp, the gun head comprises a lower clamp and an upper clamp rotatably connected to the lower clamp, the lower clamp is fixedly arranged at one end of the gun barrel, the upper clamp is transmission-connected to the trigger, a guide portion is arranged on the lower clamp, and a through hole is opened on the upper clamp, characterized in that The lower clamping plate is provided with an installation groove, a rotating shaft is arranged in the installation groove, and the guide part is rotatably connected with the lower clamping plate through the rotating shaft; the side wall of the gun barrel is provided with a first guide groove, a push-pull rod is adapted to be slidably installed in the first guide groove, one end of the push-pull rod is connected with the guide part, and an adjusting handle is arranged at the other end, a spring is arranged on the groove wall of the first guide groove close to the adjusting handle, the guide part can rotate relative to the lower clamping plate under the pushing and pulling action of the push-pull rod, and the spring is used to tighten and limit the push-pull rod.

2. The tissue stapling gun according to claim 1, characterized in that: The adjusting handle is a rod extending outward from the first guide groove, and one end of the adjusting handle facing away from the push-pull rod is connected to the spring; The length direction of the spring is the same as the length direction of the push-pull rod. In the initial state, the spring tightens and limits the push-pull rod, so that the raised structure on the guide part protrudes from the upper surface of the lower clamping plate; when the push-pull rod is moved toward the handle of the suture gun by the adjusting handle, the push-pull rod compresses the spring, and the push-pull rod pulls the guide part to rotate with the rotating axis as the rotation center, so that the raised structure on the guide part rotates below the upper surface of the lower clamping plate.

3. The tissue stapling gun according to claim 1, characterized in that: A second guide groove and a third guide groove adjacent to the second guide groove are formed on the side wall of the gun barrel, the second guide groove is connected to the third guide groove, and the second guide groove is arranged opposite to the first guide groove; A front half adjusting rod and a rear half adjusting rod are adapted and slidably installed in the second guide groove, and the front half adjusting rod and the rear half adjusting rod are relatively spaced apart in the second guide groove. An intermediate adjusting rod is adapted and slidably installed in the third guide groove, and the front half adjusting rod and the rear half adjusting rod are connected through the intermediate adjusting rod. A long strip-shaped adjusting groove is provided on the intermediate adjusting rod, and a fastening screw is slidably arranged in the adjusting groove, and the fastening screw is used to fasten the intermediate adjusting rod to the front half adjusting rod.

4. The tissue stapling gun according to claim 3, characterized in that: A connecting groove is provided at one end of the upper clamping plate, a connecting hole is provided at the end of the connecting groove away from the upper clamping plate, a rotating shaft is passed through the connecting hole, and the upper clamping plate is rotatably connected to the lower clamping plate through the rotating shaft; The end of the front half adjustment rod away from the rear half adjustment rod forms a rotation driving groove, the rotation driving groove is a groove opened on the lower surface of the front half adjustment rod, the front half adjustment rod extends into the connecting groove of the upper clamping plate, and the groove bottom of the rotation driving groove is slidably connected with the rotating shaft; The end of the rear half adjusting rod facing away from the front half adjusting rod is transmission connected to the trigger. Pulling the trigger can drive the front half adjusting rod to slide along the second guide groove toward the suture gun handle through the rear half adjusting rod. During the sliding process of the front half adjusting rod, sliding friction is formed between the bottom of the rotation drive groove and the rotating shaft, thereby driving the rotating shaft to rotate, thereby realizing the rotation and opening of the upper clamping plate relative to the lower clamping plate.

5. The tissue stapling gun according to claim 4, characterized in that: The front half adjustment rod and the rear half adjustment rod are respectively hollow rods, and the suture needle can be inserted into the rear half adjustment rod and the front half adjustment rod in sequence from the needle threading hole, and extend from the front half adjustment rod to the guide part; One end of the suture needle that passes through the guide part is provided with a hooking groove, and the other end of the suture needle is provided with a connecting seat. The connecting seat is provided with a hanging groove, and the hanging groove is adapted to be clamped with a fixing column arranged on the mounting seat of the rear handle.

6. The tissue stapling gun according to claim 5, characterized in that: A baffle is rotatably provided at one end of the upper clamping plate away from the connecting groove, the baffle is correspondingly arranged above the guide portion, the baffle is rotatably connected to the upper clamping plate through a rotating shaft and a torsion spring, and when the baffle rotates in a direction away from the lower clamping plate, the through hole is formed on the upper clamping plate; The suture needle is inserted into the guide part and the suture thread is hooked on the thread hook groove, and the rear handle is pushed to move the suture needle along the insertion direction. Under the guidance of the guide part, the suture needle moves obliquely upward and pushes the baffle to rotate. The suture needle carries the suture thread out of the exit hole. After the rear handle is reset, the suture needle retreats to the guide part, and the baffle is reset under the action of the torsion spring.

7. The tissue stapling gun according to claim 5, characterized in that: One end of the rear handle is adapted to mount the suture needle, the other end of the rear handle is hinged to one end of the front handle, the other end of the front handle is provided with the needle threading hole and the mounting hole, and the needle threading hole and the mounting hole are in the same insertion direction as the suture needle; The trigger is rotatably connected to one end of the front handle where the mounting hole is provided, and the trigger is connected to the rear half adjustment rod.

8. The tissue stapling gun according to claim 5, characterized in that: The distance between the fixing column on the rear handle and the needle hole on the front handle is adapted to the length of the trajectory of the suture needle moving from the guide portion to pass through the exit hole.

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