Carpal surgery suture device

Abstract

The present invention relates to a suture device for wrist bone surgery, including a surgical thread guide and a thread hook device, wherein the surgical thread guide device includes a gun-shaped hand-held handle and a puncture needle, wherein the needle head of the puncture needle is provided with a thread fixing structure that can be detachably clamped and fixed, and the gun-shaped hand-held handle is provided with a surgical thread positioning device for the surgical thread to pass through at the tail position of the puncture needle, and the surgical thread positioning device and the thread fixing structure are used to realize that the surgical suture is stretched along the puncture needle and is tensioned on the side of the puncture needle, and the thread hook device includes a hook needle positioning guide seat fixed on the gun-shaped hand-held handle and a hook needle axially positioned and slidably matched on the hook needle positioning guide seat, and the hook needle has a puncture tip and a hook thread mouth adjacent to the puncture tip, and the hook needle and the puncture needle are matched at an angle, and under the guidance of the hook needle positioning guide seat, the hook thread mouth of the hook needle can reach the rear of the needle head of the puncture needle so that the tensioned surgical suture enters the hook thread mouth. It is convenient to pass the surgical thread through a narrow space, and has the advantages of simple and convenient operation and improved surgical efficiency.

Description

Technical Field

[0001] The present invention relates to surgical instruments, more particularly to a suture device for wrist bone surgery. Background Art

[0002] In wrist fracture surgery, Kirschner wires are usually inserted into the fracture ends and then fixed with sutures. However, due to the small bone gap between the wrist bones, the surgical needle must pass through the soft tissue between the two wrist bones so that the surgical thread can sew the soft tissue, making the operation difficult. Summary of the invention

[0003] Purpose of the invention: To overcome the defects of the prior art, the present invention provides a suture device for carpal bone surgery that is convenient for passing surgical thread through a narrow space, which has the advantages of simple and convenient operation and improved surgical efficiency.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A suture device for wrist bone surgery comprises a surgical thread guide and a thread hook device, the surgical thread guide comprises a gun-shaped hand-held handle, a puncture needle is fixed on the gun-shaped hand-held handle, a thread fixing structure that can detachably clamp and fix the thread head is provided at the needle head of the puncture needle, the gun-shaped hand-held handle is provided with a surgical thread positioning device for the surgical thread to pass through at the tail position corresponding to the puncture needle, the surgical thread positioning device and the thread fixing structure are used to realize the surgical suture to be tensioned along the puncture needle and upward on the puncture needle side, the thread hook device comprises a hook needle positioning guide seat and a hook needle, the hook needle positioning guide seat is positioned and fixed on the gun-shaped hand-held handle, the hook needle has a puncture tip and a hook thread opening adjacent to the puncture tip, the hook needle is axially positioned and slidably matched on the hook needle positioning guide seat, the hook needle and the puncture needle are matched at an angle, and under the guidance of the hook needle positioning guide seat, the hook thread opening of the hook needle can reach behind the needle head of the puncture needle so that the tensioned surgical suture enters the hook thread opening.

[0006] By adopting the above technical scheme, during operation, the puncture needle is inserted into the soft tissue at the bone gap by holding the gun-shaped handle at a certain angle, and the surgical suture is brought into the soft tissue through the puncture needle. Then the hook needle is inserted, and the hook needle is positioned and guided by the hook needle positioning guide seat fixed on the gun-shaped handle, so that the puncture tip of the hook needle is inserted between the puncture needle and the surgical suture. Since the surgical suture is tensioned, when the hook thread opening is reached, the surgical suture enters the hook thread opening, and the hook needle is pulled out to hook the surgical suture and bring it out; the cooperation of the puncture needle and the hook needle can achieve suture operation in a narrow space.

[0007] Preferably, the hook needle is provided with a mandrel hole leading to the hook thread opening, and a pressing mandrel is axially slidably fitted in the mandrel hole, one end of the pressing mandrel is a pressing end that can slide in and out of the hook thread opening, and the other end of the pressing mandrel is an operating end for driving the pressing end in and out of the hook thread opening. Under this structural design, after the surgical suture enters the hook thread opening, it is pressed and fixed by the pressing end of the mandrel, thereby facilitating the surgical suture to escape from the fixed thread structure.

[0008] Preferably, the crochet hook is equipped with an electric drive device, which includes a drive motor and a transmission mechanism. The drive motor drives the crochet hook to slide axially through the transmission mechanism. The crochet hook includes a crochet hook body and a drive shaft for installing the crochet hook body. The drive shaft slides axially on the crochet hook positioning guide seat. The drive shaft is tubular and connected to the output end of the transmission mechanism. The wire pressing mandrel includes a mandrel body inserted into the crochet hook body and a mandrel drive rod inserted into the drive shaft. The mandrel drive rod is equipped with a mandrel drive mechanism for pulling the drive mandrel drive rod to achieve the wire pressing end of the wire pressing mandrel entering and exiting the wire hooking port. The motor switch for controlling the drive motor switch is arranged on the gun-shaped handheld handle. Under this structural design, the electric drive crochet hook moves axially to achieve the wire hooking operation, which has the advantages of convenient and reliable operation.

[0009] Preferably, the spindle driving mechanism includes a toggle device installed on the hook needle positioning guide seat and surrounding the driving shaft, the toggle device includes an annular seat shell, a toggle block radially slidingly matched in the annular seat shell, one end of the toggle block corresponding to the driving shaft is a stop toggle end that can extend out of the annular seat shell, the other end of the toggle block is abutted against a toggle block spring, a driving inclined surface is provided at the rear of the stop toggle end of the toggle block, and driving inclined surfaces are provided at both axial ends of the toggle block, the axial top end of the spindle driving rod is provided with an annular pushing step groove, an annular toggle groove is provided circumferentially at the axial end near the tail of the spindle driving rod, the top pushing step groove of the spindle driving rod extends out of the upper port of the driving shaft, the upper port of the driving shaft is pushed and matched with the driving inclined surface, and a toggle groove is provided on the driving shaft A window is exposed for the stop and toggle end of the shift block to be inserted into the toggle groove, and the window has an axial height extending along the axial direction of the drive shaft to form a relative axial movement of the shift block in the window. The two axial end faces of the window are pushed together with the driving inclined surface. When the spindle body exits the hook line mouth position, the pushing step groove is higher than the upper port of the drive shaft by a distance corresponding to the moving stroke of the wire pressing spindle and the position of the toggle groove corresponding to the upper end face of the window. When the hook needle is in the initial position of the insertion action, the window of the drive shaft is higher than the upper port of the annular seat shell of the toggle device or the stop and toggle end of the shift block is correspondingly inserted into the toggle groove. When the hook needle is in the end position of the insertion action, the step surface of the pushing step groove corresponds to the lower port of the annular seat shell and is close to the stop and toggle end of the shift block. When the thread hooking operation is carried out, the driving shaft moves downward axially, and the core shaft driving rod in the driving shaft moves synchronously, and the window of the driving shaft moves to the position of entering the toggle device. Under the drive of the toggle block spring, the stop toggle end is stuck in the toggle groove along the window, thereby realizing that the core shaft driving rod is restricted, and the core shaft driving rod is displaced and increased relative to the driving shaft. As the driving shaft moves downward, until the driving inclined surface of the toggle block abuts the upper end surface of the window, the toggle block is forced to move and exit the toggle groove until it exits the window, so that the pressing end of the core shaft body can reliably exit the hook thread opening. After the hook needle is punctured in place, the toggle block is stuck in the pushing step groove under the action of the toggle block spring. Thereafter, the driving shaft rises axially, and the core shaft driving rod is restricted under the holding of the toggle block, and the relative displacement of the core shaft driving rod in the driving shaft decreases, so that the pressing end of the core shaft body extends into the hook thread opening to realize the clamping and fixing of the surgical suture, making the thread hooking operation more reliable. As the driving shaft rises, the upper end of the driving shaft abuts the driving inclined surface, and the toggle block moves and exits the pushing step groove.

[0010] Preferably, the two axial end surfaces of the window are inclined surfaces arranged opposite to each other. Under this structural design, the inclined surface cooperates with the driving inclined surface, which has the advantage of reliable cooperation.

[0011] Preferably, the upper end surface of the driving shaft is an inclined surface, and the inclined surface is matched with the driving inclined surface, which has the advantage of reliable matching.

[0012] Preferably, the transmission mechanism includes a driving arm, one end of which is fixed on the driving shaft, and the other end of which is connected to a driving nut, which is matched with a driving screw, and the driving screw is positioned and rotated to match the hook needle positioning guide seat, and a transmission bevel gear is provided on the driving screw, and the transmission bevel gear is matched with a driving bevel gear, and the driving bevel gear is installed on the motor shaft of the driving motor, and the driving motor is installed on the hook needle positioning guide seat near the gun-shaped hand-held handle. Under this structural design, the driving screw is driven to rotate by the driving bevel gear and the transmission bevel gear, thereby driving the driving nut to rotate, and then driving the driving shaft to move axially, so that the driving motor is installed on the hook needle positioning guide seat near the gun-shaped hand-held handle, so that the weight is concentrated on the gun-shaped hand-held handle, making the puncture needle puncture operation more stable and reliable.

[0013] Preferably, the needle shaft of the puncture needle is flat, and the needle shaft of the puncture needle has a surgical thread support surface facing the hook needle side, and a supporting convex rib is provided in the center of the surgical thread support surface, and the supporting convex rib has a break for the hook needle to pass through corresponding to the hook needle puncture stroke position. Under this structural design, better support for the surgical suture is achieved, and the needle tip of the hook needle penetrates between the puncture needle and the surgical gap along the break. Then, when the hook thread opening of the hook needle corresponds to the surgical suture, the surgical suture enters the hook thread opening under the action of tension, which is convenient for the hook thread operation.

[0014] Preferably, the puncture needle includes a needle bar and a needle head, and an annular thread clamping opening ring is provided at the head end of the needle bar, and the axial inner end face of the thread clamping opening ring is smoothly transitioned and connected with the surgical thread support surface. The needle bar of the hook needle is provided with guide grooves on both sides, and the needle head includes a puncture tip and a locking sleeve, and the locking sleeve can be inserted into and slid into the thread clamping opening ring, and the axial end face of the locking sleeve and the axial end face of the thread clamping opening ring are smoothly transitioned and matched, and the locking sleeve extends axially with a connecting arm that matches the guide groove, and the connecting arm can be axially slidably matched in the guide groove. Under this structural design, since one end of the surgical suture is fixed on the Kirschner wire and has only a single thread head, the thread head is inserted into the thread clamping opening ring, and then the needle head is locked, so that the thread head is clamped and fixed under a certain clamping force, and the thread head can be detached during the later hooking operation.

[0015] Preferably, the surgical thread positioning device includes a thread passing seat with a gun-shaped hand-held handle corresponding to the fixed end position of the puncture needle, the thread passing seat has an opening corresponding to the surgical thread support surface, and a thread positioning ring is rotated on the thread passing seat, and the thread positioning ring has a thread passing notch that matches the opening, and the thread positioning ring can be rotated to the notch end of the thread passing notch and connected and closed with one end of the opening of the thread passing seat, so that the thread passing notch forms a thread positioning hole, and the thread positioning ring can be rotated to the notch end of the thread passing notch to disengage one end of the opening of the thread passing seat to open the notch end of the thread passing notch, so that the notch end of the thread passing notch is connected with the opening of the thread passing seat. Under this structural design, the surgical gap is hung in and out of the thread passing notch by rotating the thread positioning ring, which has the advantages of simple structure and convenient operation.

[0016] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a suture device for carpal bone surgery according to a specific embodiment of the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged view of part A;

[0019] Figure 3 It is a partial enlarged view of the position of the puncture needle head in a specific embodiment of the present invention;

[0020] Figure 4 This is a diagram of a surgical thread positioning device in a closed state according to a specific embodiment of the present invention;

[0021] Figure 5 This is a diagram of the open state of the surgical thread positioning device according to a specific embodiment of the present invention;

[0022] Figure 6 The crochet structure of the specific embodiment of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 7 The crochet structure of the specific embodiment of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 8 It is a schematic structural diagram of an electric drive device for a crochet hook according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0025] See attached Figures 1 to 8The present invention discloses a suture device for wrist bone surgery, comprising a surgical thread guide 1 and a thread hook 2. The surgical thread guide 1 comprises a gun-shaped hand-held handle 11, and the gun-shaped hand-held handle 11 comprises a holding support handle 111, a needle seat 112 and an upper thumb hook ring 113. The bottom of the needle seat 112 is connected to the holding support handle 111, and an upper thumb hook ring 113 is arranged on the upper end of the needle seat 112, so that the hand-held gun-shaped hand-held handle 11 is more stable and reliable. A puncture needle 12 is fixed on the gun-shaped hand-held handle 11, and the needle seat 112 is used to fix the puncture needle 12. A thread fixing structure with a detachable clamping and fixing thread head is arranged at the needle head of the puncture needle 12. The thread fixing structure can be a needle hole, but there is insufficient tension force of the surgical suture, but the gun-shaped hand-held handle 11 corresponds to A surgical thread positioning device for the surgical thread to pass through is provided at the tail end of the puncture needle 12. The surgical thread positioning device and the thread fixing structure enable the surgical suture to be tensioned along the puncture needle 12 and on the side of the puncture needle 12. The thread hooker 2 includes a hook needle positioning guide seat 21 and a hook needle 22. The hook needle positioning guide seat 21 is positioned and fixed on the gun-shaped hand handle 11. The hook needle 22 has a puncture tip 221 and a hook thread opening 222 adjacent to the puncture tip 221. The hook needle 22 is axially positioned and slidably fitted on the hook needle positioning guide seat 21. The hook needle 22 and the puncture needle 12 are matched at an angle. Under the guidance of the hook needle positioning guide seat 21, the hook thread opening of the hook needle 22 can reach the rear of the needle head of the puncture needle 12 to achieve the tensioned surgical suture entering the hook thread opening. During operation, the gun-shaped handle 11 is held to insert the puncture needle 12 into the soft tissue at the bone gap at a certain angle, and the surgical suture is brought into the soft tissue through the puncture needle 12. Then the hook needle 22 is inserted. The hook needle 22 is positioned and guided by the hook needle positioning guide seat 21 fixed on the gun-shaped handle 11, so that the puncture tip 221 of the hook needle 22 is inserted between the puncture needle 12 and the surgical suture. Since the surgical suture is tensioned, when the hook thread opening is reached, the surgical suture enters the hook thread opening, and the hook needle 22 is pulled out to hook the surgical suture and bring it out; the cooperation of the puncture needle 12 and the hook needle 22 achieves suture operation in a narrow space, overcoming the defect that the traditional surgical needle tip is inconvenient to operate when inserting and passing through a narrow space.

[0026] Furthermore, the needle bar of the puncture needle 12 is flat, and the needle bar of the puncture needle 12 has a surgical thread support surface facing the hook needle 22. A support convex rib 121 is provided at the center of the surgical thread support surface. The support convex rib 121 has a break 1211 for the hook needle 22 to pass through corresponding to the puncture stroke position of the hook needle 22. To achieve better support for the surgical suture, the needle tip of the hook needle 22 penetrates between the puncture needle 12 and the surgical gap along the break, and then when the hook thread opening of the hook needle 22 corresponds to the surgical suture, the surgical suture enters the hook thread opening under the action of tension, which is convenient for the hook thread operation. The puncture needle 12 includes a needle bar and a needle head. The needle bar head end is provided with an annular thread clamping opening ring 122. The axial inner end surface of the thread clamping opening ring 122 is smoothly connected to the surgical thread support surface. The needle bar of the hook needle 22 is provided with guide grooves 123 on both sides. The needle head includes a puncture tip 124 and a locking sleeve 125. The locking sleeve 125 can be inserted into and slid into the thread clamping opening ring 122. The axial end surface of the locking sleeve 125 is smoothly matched with the axial end surface of the thread clamping opening ring 122. The locking sleeve 125 extends axially with a connecting arm 126 that matches the guide groove 123. The connecting arm 126 can be axially slidably matched in the guide groove 123. Since one end of the surgical suture is fixed on the Kirschner wire and has only a single thread head, the thread head is inserted into the thread clamping opening ring 122, and then the needle head is locked, so that the thread head is clamped and fixed under a certain clamping force, and the thread head can be detached during the later hooking operation. The surgical thread positioning device includes a thread passing seat 114 with a gun-shaped hand-held handle corresponding to the fixed end position of the puncture needle, the thread passing seat 114 has an opening 1141 corresponding to the surgical thread support surface, and a thread positioning ring 115 is rotatably matched on the thread passing seat 114. The thread positioning ring 115 has a thread passing notch 1151 that matches the opening 1141. The thread positioning ring 115 can be rotated until the notch end of the thread passing notch 1151 is connected and sealed with one end of the opening 1141 of the thread passing seat 114 (such as Figure 4 As shown), so that the wire gap 1151 forms a wire positioning hole, the wire positioning ring 115 can be rotated to the gap end of the wire gap 1151 to disengage one end of the opening 1141 of the wire seat 114 to open the gap end of the wire gap 1151 (as shown in FIG. Figure 5 As shown), so that the notch end of the wire-passing notch 1151 is connected to the opening 1141 of the wire-passing seat 114.

[0027] In order to make the hooking operation more reliable, the hook needle 22 is provided with a core shaft hole 223 leading to the hooking port, and a pressing core shaft 224 is axially slidably matched in the core shaft hole 223. One end of the pressing core shaft 224 is a pressing end 2241 that can slide in and out of the hooking port, and the other end of the pressing core shaft 224 is an operating end for driving the pressing end 2241 to enter and exit the hooking port. After the surgical suture enters the hooking port, it is pressed and fixed by the pressing end 2241 of the core shaft, so as to facilitate forcing the surgical suture to escape from the fixed line structure.

[0028] The hook 22 can be operated manually, but manual operation has the disadvantage of being inconvenient to operate. Therefore, the hook 22 is equipped with an electric drive device, which includes a drive motor 23 and a transmission mechanism. The drive motor 23 drives the hook 22 to slide axially through the transmission mechanism. The hook 22 includes a hook body 22-1 and a drive shaft 22-2 for installing the hook body 22-1. The drive shaft 22-2 is axially slidably matched on the hook positioning guide seat 21. The drive shaft 22-2 is tubular. The driving shaft 22-2 is connected to the output end of the transmission mechanism, the crimping mandrel 224 includes a mandrel body 224-1 inserted into the hook body 22-1 and a mandrel driving rod 224-2 inserted into the driving shaft 22-2, the mandrel driving rod 224-2 is matched with a mandrel driving mechanism for pulling and driving the mandrel driving rod 224-2 to achieve the crimping end 2241 of the crimping mandrel 224 entering and exiting the hooking port, and the motor switch for controlling the switch of the driving motor 23 is arranged on the gun-shaped hand handle 11. The electric drive crochet 22 moves axially to achieve the hooking operation, which has the advantages of convenient and reliable operation.

[0029] Furthermore, the spindle drive mechanism includes a toggle 24 installed on the hook needle positioning guide seat 21 and surrounding the drive shaft 22-2. The toggle 24 includes an annular seat shell 241, a toggle block 242 radially slidingly fitted in the annular seat shell 241, and one end of the toggle block 242 corresponding to the drive shaft 22-2 is a stop toggle end 2421 that can extend out of the annular seat shell 241. The other end of the toggle block 242 is abutted against a toggle block spring 243. A driving inclined surface 2422 is provided behind the stop toggle end 2421 of the toggle block 242. Both axial ends of the toggle block 242 have driving inclined surfaces. 2422, the top axial end of the mandrel driving rod 224-2 has an annular push step groove 224-21, and the mandrel driving rod 224-2 is provided with an annular toggle groove 224-22 along the circumferential direction near the tail of the axial direction. The top push step groove 224-21 of the mandrel driving rod 224-2 extends out of the upper end of the driving shaft 22-2, and the upper end of the driving shaft 22-2 is pushed and matched with the driving inclined surface 2422. The upper end surface 22-23 of the driving shaft 22-2 is an inclined surface, and the driving shaft 22-2 is provided with a toggle groove 224-22 to expose the toggle block The stop toggle end 2421 of 242 is inserted into the window 22-21 of the toggle groove 224-22. The window 22-21 has an axial height extending along the axial direction of the drive shaft 22-2 to form a relative axial movement of the toggle block 242 in the window 22-21. The axial end faces of the window 22-21 are pushed together with the driving inclined surface 2422. The axial end faces of the window 22-21 are inclined surfaces arranged oppositely. When the core shaft body 224-1 exits the hook line mouth position, the push step groove 224-21 is higher than the corresponding wire pressing core shaft of the upper port of the drive shaft 22-2 The distance of the moving stroke of 224 and the toggle groove 224-22 correspond to the upper end surface position of the window 22-21. When the hook needle 22 is located at the initial position of the insertion action, the stop toggle end 2421 of the toggle block 242 is correspondingly inserted into the toggle groove 224-22 (or the window 22-21 of the driving shaft 22-2 is higher than the upper end of the annular seat shell 241 of the toggle device 24). When the hook needle 22 is located at the end position of the insertion action, the step surface of the push step groove 224-21 corresponds to the lower end of the annular seat shell 241 and is close to the stop toggle end 2421 of the toggle block 242.During the line hooking operation, the driving shaft 22-2 moves axially downward, the core shaft driving rod 224-2 in the driving shaft 22-2 moves synchronously, and the window 22-21 of the driving shaft 22-2 moves to the position of entering the toggle 24. The toggle block 242 is driven by the toggle block spring 243, and the stop toggle end 2421 is inserted into the toggle groove 224-22 along the window 22-21, so that the core shaft driving rod 224-2 is restricted, and the core shaft driving rod 224-2 moves upward relative to the driving shaft 22-2. As the driving shaft 22-2 moves downward, until the driving inclined surface 2422 of the toggle block 242 hits the upper end surface of the window 22-21, the toggle block 242 is forced to move out of the toggle groove 224-22 until it exits the window 22-21, reaching The pressing end 2241 of the core shaft body 224-1 can reliably withdraw from the hook thread opening. After the hook needle 22 is pierced into place, the shift block 242 is stuck into the pushing step groove 224-21 under the action of the shift block spring 243. After that, the drive shaft 22-2 rises axially, and the core shaft driving rod 224-2 is restricted under the retention of the shift block 242. The core shaft driving rod 224-2 is relatively displaced and decreased in the drive shaft 22-2, so that the pressing end 2241 of the core shaft body 224-1 is extended into the hook thread opening to achieve the clamping and fixation of the surgical suture, making the hook thread operation more reliable. As the drive shaft 22-2 rises, the upper end of the drive shaft 22-2 contacts the driving inclined surface 2422, and the shift block 242 moves out of the pushing step groove 224-21. Preferably, when the hook needle 22 is located at the initial position of the insertion action, the stop and push end 2421 of the push block 242 is correspondingly inserted into the push groove 224-22, and the driving motor drives the hook needle to move up to the initial position when driving the hook needle to pull out the needle, and then drives the hook needle to move down, so as to realize the action of loosening the surgical suture by the thread pressing core shaft.

[0030] In this specific embodiment, the transmission mechanism includes a driving arm 25, one end of which is fixed on the driving shaft 22-2, and the other end of the driving arm 25 is connected to a driving nut 26, which is matched with a driving screw 27, and the driving screw 27 is positioned and rotated to match the hook needle positioning guide seat 21, and a transmission bevel gear 28 is provided on the driving screw 27, and the transmission bevel gear 28 is matched with a driving bevel gear 29, and the driving bevel gear 29 is installed on the motor shaft of the driving motor 23, and the driving motor 23 is installed at the hook needle positioning guide seat 21 near the gun-shaped hand-held handle 11. The driving screw 27 is driven to rotate by the driving bevel gear 29 and the transmission bevel gear 28, thereby driving the driving nut 26 to rotate, and then driving the driving shaft 22-2 to move axially, so that the driving motor 23 is installed at the hook needle positioning guide seat 21 near the gun-shaped hand-held handle 11, so that the weight is concentrated on the gun-shaped hand-held handle 11, so that the puncture operation of the puncture needle 12 is more stable and reliable.

[0031] The above embodiments are only used to illustrate the present invention, and are not intended to limit the protection scope of the present invention. Those skilled in the art may make corresponding modifications or variations under the guidance of the essence of the present invention. For example, the transmission mechanism may also adopt other transmission forms in the prior art, such as worm gears, etc. Therefore, all equivalent technical solutions fall within the protection scope of the present invention.

Claims

1. A suture device for wrist bone surgery, characterized in that: The invention comprises a surgical thread guide and a thread hook, wherein the surgical thread guide comprises a gun-shaped hand-held handle, a puncture needle is fixed on the gun-shaped hand-held handle, a thread fixing structure is provided at the needle head of the puncture needle, a surgical thread positioning device for the surgical thread to pass through is provided at the tail position of the puncture needle corresponding to the gun-shaped hand-held handle, and the surgical suture is tensioned along the puncture needle and upward on the side of the puncture needle through the surgical thread positioning device and the thread fixing structure, and the thread hook comprises a hook needle positioning guide seat and a hook needle, the hook needle positioning guide seat is positioned and fixed on the gun-shaped hand-held handle, the hook needle has a puncture tip and a hook thread opening adjacent to the puncture tip, the hook needle is axially positioned and slidably matched on the hook needle positioning guide seat, the hook needle and the puncture needle are matched at an angle, and under the guidance of the hook needle positioning guide seat, the hook thread opening of the hook needle can reach behind the needle head of the puncture needle so that the tensioned surgical suture enters the hook thread opening;The crochet needle is provided with a core shaft hole leading to the hook wire mouth, and a wire pressing core shaft is axially slidably matched in the core shaft hole, one end of the wire pressing core shaft is a wire pressing end that can slide into and out of the hook wire mouth, and the other end of the wire pressing core shaft is an operating end for driving the wire pressing end to enter and exit the hook wire mouth. The crochet needle is matched with an electric driving device, and the electric driving device includes a driving motor and a transmission mechanism. The driving motor drives the crochet needle to slide axially through the transmission mechanism. The crochet needle includes a crochet needle body and a driving shaft for installing the crochet needle body. The driving shaft is axially slidably matched on the crochet needle positioning guide seat. The driving shaft is tubular, and the driving shaft and the output end of the transmission mechanism are connected. The crimping mandrel comprises a mandrel body inserted into the hook body and a mandrel driving rod inserted into the driving shaft, the mandrel driving rod is matched with a mandrel driving mechanism for pulling and driving the mandrel driving rod to achieve the crimping end of the crimping mandrel entering and exiting the hook wire port, the motor switch for controlling the driving motor switch is arranged on the gun-shaped handheld handle, the mandrel driving mechanism comprises a toggle device installed on the hook needle positioning guide seat and surrounding the driving shaft, the toggle device comprises an annular seat shell, a toggle block radially slidingly fitted in the annular seat shell, one end of the toggle block corresponding to the driving shaft is a stop toggle end that can extend out of the annular seat shell, and the other end of the toggle block abuts against the hook needle positioning guide seat. There is a shift block spring, a driving inclined surface is arranged behind the stop and shift end of the shift block, and both axial ends of the shift block have driving inclined surfaces, the axial top end of the core shaft driving rod has an annular pushing step groove, and the core shaft driving rod is axially provided with an annular shifting groove along the circumferential direction near the tail, and the top pushing step groove of the core shaft driving rod extends out of the upper port of the driving shaft, and the upper port of the driving shaft pushes and cooperates with the driving inclined surface, and a window is provided on the driving shaft for exposing the shifting groove so that the stop and shifting end of the shift block can be inserted into the shifting groove, and the window has an axial height extending along the axial direction of the driving shaft to form an axial relative movement of the shift block in the window, and the axial end surfaces of the window are The driving inclined surface pushes and cooperates. When the mandrel body exits the hook line mouth position, the pushing step groove is higher than the upper port of the driving shaft by the distance of the moving stroke of the pressing mandrel and the toggle groove corresponds to the upper end surface position of the window. When the hook needle is at the initial position of the piercing action, the window of the driving shaft is higher than the upper port of the annular seat shell of the toggle or the stop toggle end of the toggle block and is correspondingly inserted into the toggle groove. When the hook needle is at the end position of the piercing action, the step surface of the pushing step groove corresponds to the lower port of the annular seat shell and is close to the stop toggle end of the toggle block. The two axial end surfaces of the window are relatively arranged inclined surfaces, and the upper end surface of the driving shaft is an inclined surface. ; 2. The suture device for wrist bone surgery according to claim 1, characterized in that: The transmission mechanism includes a driving arm, one end of which is fixed on the driving shaft, and the other end of the driving arm is connected to a driving nut, which is matched with a driving screw, and the driving screw is positioned and rotated to match the crochet positioning guide seat, and a transmission bevel gear is provided on the driving screw, and the transmission bevel gear is matched with a driving bevel gear, and the driving bevel gear is installed on the motor shaft of the driving motor, and the driving motor is installed on the crochet positioning guide seat near the gun-shaped handheld handle.

3. The suture device for wrist bone surgery according to claim 1, characterized in that: The needle bar of the puncture needle is flat and has a surgical thread support surface facing the hook needle side. A supporting rib is provided at the center of the surgical thread support surface. The supporting rib has a break corresponding to the hook needle puncture stroke position for the hook needle to pass through.

4. The suture device for wrist bone surgery according to claim 3, characterized in that: The puncture needle comprises a needle rod and a needle head, an annular wire clamping opening ring is provided at the head end of the needle rod, the axial inner end surface of the wire clamping opening ring is smoothly connected with the surgical wire supporting surface, guide grooves are provided on both sides of the needle rod of the hook needle, and the needle head comprises a puncture tip and a locking sleeve, the locking sleeve can be inserted into and slid into the wire clamping opening ring, the axial end surface of the locking sleeve is smoothly matched with the axial end surface of the wire clamping opening ring, the locking sleeve extends axially with a connecting arm matched with the guide groove, and the connecting arm can axially slide in the guide groove.

5. The suture device for wrist bone surgery according to claim 4, characterized in that: The surgical wire positioning device includes a wire seat with a gun-shaped hand-held handle corresponding to the fixed end position of the puncture needle, the wire seat having an opening corresponding to the surgical wire support surface, a wire positioning ring rotating on the wire seat, the wire positioning ring having a wire notch matching the opening, the wire positioning ring can be rotated to the notch end of the wire notch and connected and closed with one end of the opening of the wire seat, so that the wire notch forms a wire positioning hole, the wire positioning ring can be rotated to the notch end of the wire notch to disengage from one end of the opening of the wire seat to open the notch end of the wire notch, so that the notch end of the wire notch is connected with the opening of the wire seat.

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