A clamp device

Abstract

The present application relates to the technical field of medical devices, and discloses a clamp device and a control method thereof, which includes a chuck, a tightening tube, a transmission shaft and a sheath tube, wherein the chuck moves in the tightening tube, the tightening tube has a locking portion for locking the chuck, the transmission shaft controls the movement of the chuck, the sheath tube is sleeved on the transmission shaft, and further includes a handle, a finger ring and a push-pull seat; the finger ring is connected to one end of the handle, and the sheath tube is connected to the end of the handle away from the finger ring; the push-pull seat is slidably sleeved on the handle along the length direction of the handle, and the end of the transmission shaft away from the chuck is connected to the push-pull seat; wherein the hole formed by the finger ring is an inner hole, and an adjustment portion extending into the inner hole is swingable on the finger ring; a stop seat moves in the handle, and a linkage mechanism is coordinated between the adjustment portion and the stop seat, and when the adjustment portion is pushed to swing, the linkage mechanism can drive the stop seat to extend or be recovered to the handle. The present application can reduce the situation of misoperation.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a clamp device and a control method thereof. Background Art

[0002] Currently, when an endoscope is used for surgical treatment, a special endoscopic clip instrument is used to perform hemostasis during the operation.

[0003] The existing clamping device generally includes a push assembly 1, a transmission shaft 2, a sheath tube 3, a tightening tube 4 and a chuck 5. The push assembly 1 includes a handle 101 and a grip 102. The grip 102 slides on the handle 101. One end of the transmission shaft 2 is connected to the handle 102, and the other end of the transmission shaft 2 is connected to the chuck 5 through a connecting portion. One end of the sheath tube 3 is connected to the handle 101, and the other end of the sheath tube 3 extends to the tightening tube 4. The sheath tube 3 is also sleeved with the transmission shaft 2. The chuck 5 moves in the tightening tube 4. Pushing the handle 102 in the direction close to the tightening tube 4 can drive the chuck 5 to open, and pushing the handle 102 in the direction away from the tightening tube 4 can drive the chuck 5 to close to clamp the wound. Continuing to push the handle 102 in the direction away from the tightening tube 4 can limit the chuck 5 in the tightening tube 4 and keep it in a closed state, and the connection portion and the chuck 5 are broken and separated, so that the sheath tube 3 and the transmission shaft 2 can leave the body of the surgical object, while the chuck 5 remains in the body of the surgical object. Among them, the tightening tube 4 has a locking portion 6 for clamping the chuck 5. Before the chuck 5 moves toward the pushing assembly 1 to cooperate with the locking portion 6, the chuck 5 can open and close freely under the push of the handle 102. After the chuck 5 cooperates with the locking portion 6, the chuck 5 remains in a closed state.

[0004] For example, referring to the Chinese patent document with publication number CN117918922A, the clamping part is clamped with the locking hole of the tightening tube to maintain the closed state, and the handle is pushed to pull the connecting part through the core shaft, so that the fragile part on the connecting part breaks, so as to separate the clamping part from the remaining structure. For another example, referring to the publication number CN212490042U, the clamp is clamped with the strip boss in the jacket tube to maintain the closed state, and the slider is pushed to pull the drive shaft, so that the end of the drive shaft away from the slider breaks, so as to separate the clamp from the remaining structure.

[0005] With regard to the above-mentioned related technologies, since the handle 102 drives the chuck 5 to close and the chuck 5 is locked in the tightening tube 4 in the same direction, during the operation, the force of pushing the handle 102 may not be controlled well, and the coordination between the chuck 5 and the wound may not be adjusted well, that is, the chuck 5 may be locked in the tightening tube 4 immediately after being pushed closed. In this case, the clamp instrument needs to be taken out, replaced and re-operated, which is not conducive to the operation time. Summary of the invention

[0006] In order to reduce the possibility of misoperation, the present application provides a clamp device and a control method thereof.

[0007] In a first aspect, the present application provides a clamp device, which adopts the following technical solution:

[0008] A clamp device, comprising a clamp, a tightening tube, a transmission shaft and a sheath tube, wherein the clamp moves in the tightening tube, the tightening tube has a locking portion for locking the clamp, the transmission shaft controls the movement of the clamp, the sheath tube is sleeved on the transmission shaft, and further comprises a handle rod, a finger ring and a push-pull seat; the finger ring is connected to one end of the handle rod, the sheath tube is connected to the end of the handle rod away from the finger ring; the push-pull seat is slidably sleeved on the handle rod along the length direction of the handle rod, and the end of the transmission shaft away from the clamp is connected to the push-pull seat;

[0009] The hole formed by the finger ring is an inner hole, and an adjusting portion extending into the inner hole is swingably provided on the finger ring; a stop seat is movable in the handle, and a linkage mechanism is provided between the adjusting portion and the stop seat, and when the adjusting portion is pushed to swing, the linkage mechanism can drive the stop seat to extend out or be retracted into the handle;

[0010] When the stop seat extends out of the handle and the push-pull seat abuts against one end of the stop seat away from the finger ring, the chuck is closed and the chuck and the locking portion are in a separated state.

[0011] By adopting the above technical solution, by pushing the adjustment part to swing, the linkage mechanism can drive the stop seat to extend or retract into the handle rod, thereby controlling the moving range of the push-pull seat. When the stop seat extends out of the handle rod and abuts against the push-pull seat, the chuck is closed but not locked in the tightening tube, which provides the user with an opportunity to adjust the fit between the chuck and the wound. Only after the user confirms that the chuck is in a suitable position, the operation continues to lock the chuck in the tightening tube, thereby reducing the problem of needing to replace the instrument and re-operate due to improper operation, thereby improving the efficiency of the operation.

[0012] Optionally, the linkage mechanism includes

[0013] A hinge shaft, fixed to the adjusting part and rotating in the finger ring, and coaxial with the rotating axis of the adjusting part;

[0014] A linkage rod is slidable in the handle rod along the length direction of the handle rod, the end of the linkage rod away from the finger ring has a first inclined surface, and the stop seat is magnetically attracted to the first inclined surface; and

[0015] The conversion assembly is arranged between the hinge shaft and the linkage rod, and is used for driving the linkage rod to move in the handle rod when the hinge shaft rotates.

[0016] By adopting the above technical solution, when the adjusting part is swung, the hinge shaft rotates together, thereby driving the linkage rod through the conversion component to push the stop seat to move out or retract to the handle rod.

[0017] Optionally, the conversion assembly includes a conversion tooth and a rack; the conversion teeth are evenly distributed on the outer wall of the hinge shaft along the circumference of the hinge shaft; the rack is embedded in the linkage rod and meshes with the conversion teeth.

[0018] By adopting the above technical solution, through the meshing of the conversion tooth and the rack, the slight change of the swing of the adjustment part can be converted into the movement of the linkage rod, thereby improving the accuracy and stability of the operation.

[0019] Optionally, the stop seat has a second inclined surface, and the second inclined surface is attached to and magnetically attracted to the first inclined surface.

[0020] By adopting the above technical solution, the second inclined surface can increase the contact area between the stop seat and the linkage rod, thereby improving the matching effect between the linkage rod and the stop seat.

[0021] Optionally, there are two stop seats, the linkage rods correspond to the stop seats one by one, and the hinge shaft controls the two linkage rods simultaneously.

[0022] Optionally, the push-pull seat includes a protruding section and a recessed section; the protruding section and the recessed section are both sleeved on the outer wall of the handle rod, there are two protruding sections, the two protruding sections are respectively connected to the two ends of the recessed section along the length direction of the handle rod, and the outer periphery of the recessed section is recessed relative to the outer periphery of the protruding section towards the outer wall of the handle rod.

[0023] By adopting the above technical solution, the recessed section is recessed relative to the protruding section to facilitate the operator to hold it, thereby improving the convenience for the operator to push and pull the push-pull seat.

[0024] Optionally, a travel hole penetrating through two opposite sides of the handle rod is formed on the handle rod, and both the protruding section and the recessed section have a travel portion that slides in the travel hole.

[0025] By adopting the above technical solution, the cooperation between the travel hole and the travel part guides the movement of the push-pull seat.

[0026] Optionally, the outer wall of the handle rod is provided with a groove along the length direction of the handle rod, and the handle rod forms a plurality of limiting teeth in the groove distributed along the length direction of the handle rod; the recessed section has an elastic part, and the elastic part is opposite to the groove, and the elastic part can enter the groove and be stuck in the gap between the limiting teeth after being pressed.

[0027] By adopting the above technical solution, when the elastic part is pressed into the groove and stuck in the gap between the limiting teeth, the position of the push-pull seat is fixed, so that the operator can maintain the current opening and closing state of the chuck as needed to facilitate observation of the chuck.

[0028] Optionally, a plurality of grooves are arranged along the circumference of the handle rod, and the elastic parts correspond to the grooves one by one.

[0029] By adopting the above technical solution, the push-pull seat can be limited from different directions and positions through the cooperation of multiple grooves and elastic parts.

[0030] In a second aspect, the present application provides a clamp device control method, which adopts the following technical solution:

[0031] A method for controlling a clamp apparatus, comprising:

[0032] Push the adjustment part to move the stop seat out of the handle;

[0033] When the chuck needs to clamp and close the wound, pull the push-pull seat toward the finger ring;

[0034] After confirming that the chuck clamps and closes the wound, push the adjustment part to retract the stop seat into the handle, and then pull the push-pull seat toward the direction close to the finger ring.

[0035] In summary, the present application includes at least one of the following beneficial effects:

[0036] 1. After pushing the chuck closed, the operator can readjust the position of the chuck as needed, and then perform the locking operation after confirming that it is correct, thereby reducing the problem of needing to replace instruments due to improper operation and improving the flexibility and accuracy of the operation;

[0037] 2. The coordination of the protruding section and the recessed section of the push-pull seat, as well as the travel hole and the limit teeth on the handle, further enhance the stability of the clamp during surgery and reduce the risk of operational errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the prior art;

[0039] Figure 2 It is a schematic diagram of the structure of an embodiment of the present application;

[0040] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0041] Figure 4 It is a schematic diagram of the structure of the rear handle rod of the push-pull seat hidden in the embodiment of the present application;

[0042] Figure 5 It is a schematic diagram of the structure of the finger ring after being cut and coordinated with the linkage mechanism in the embodiment of the present application;

[0043] Figure 6 It is a structural schematic diagram of the linkage mechanism in the embodiment of the present application;

[0044] Figure 7 yes Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0045] Explanation of the reference numerals in the accompanying drawings: 1. Pushing assembly; 101. Handle; 102. Handle; 2. Transmission shaft; 3. Sheath; 4. Tightening tube; 5. Chuck; 6. Locking part; 7. Handle rod; 8. Finger ring; 9. Push-pull seat; 91. Protruding section; 92. Recessed section; 921. Elastic part; 922. Fixed part; 10. Inner hole; 11. Adjusting part; 12. Stop seat; 13. Articulated shaft; 14. Linking rod; 15. Conversion assembly; 151. Conversion tooth; 152. Rack; 18. First inclined plane; 19. Second inclined plane; 20. Travel hole; 21. Travel part; 22. Groove; 23. Limiting tooth; 24. Connection part; 25. Adjusting groove; 26. Locking end; 27. Unlocking end. DETAILED DESCRIPTION

[0046] The following is combined with Figure 2-Figure 7 This application is described in further detail.

[0047] The present application embodiment discloses a clamp device. Figure 2 and Figure 3 The clamp device includes a clamp 5, a tightening tube 4, a transmission shaft 2, a sheath tube 3, a handle rod 7, a finger ring 8 and a push-pull seat 9.

[0048] Among them, the tightening tube 4, the sheath tube 3, the handle 7 and the finger ring 8 are arranged in sequence, the finger ring 8 is fixed to the end of the handle 7 away from the tightening tube 4, and the push-pull seat 9 slides along the length direction of the handle 7 and is sleeved on the handle 7. The chuck 5 moves in the tightening tube 4, and the end of the tightening tube 4 close to the handle 7 has a locking portion 6 for locking the chuck 5. The locking portion 6 in this embodiment is a slot on the wall of the tightening tube 4, and the chuck 5 has a portion that can be inserted into the locking portion 6. One end of the transmission shaft 2 is connected to the chuck 5 through a connecting portion (not shown in the figure), and the other end of the transmission shaft 2 is connected to the push-pull seat 9. The sheath tube 3 is sleeved on the transmission shaft 2, and one end of the sheath tube 3 is connected to the end of the handle 7 away from the finger ring 8, and the other end of the sheath tube 3 is close to the end of the tightening tube 4 close to the handle 7, so that the sheath tube 3 guides the transmission shaft 2, and the sheath tube 3 limits the distance between the tightening tube 4 and the handle 7.

[0049] When the push-pull seat 9 slides on the handle rod 7 relative to the handle rod 7 in the direction away from the finger ring 8, power is transmitted through the transmission shaft 2 to drive the chuck 5 to slide relative to the tightening tube 4 in the direction away from the handle rod 7, so that the chuck 5 is opened. When the push-pull seat 9 slides on the handle rod 7 relative to the handle rod 7 in the direction close to the finger ring 8, power is transmitted through the transmission shaft 2 to drive the chuck 5 to slide relative to the tightening tube 4 in the direction close to the handle rod 7, so that the chuck 5 clamps the wound and closes. The push-pull seat 9 continues to slide in the direction close to the finger ring 8, so that the chuck 5 cooperates with the locking part 6 to maintain the locked state, and the connecting part is separated from the chuck 5. Among them, the structures of the chuck 5, the tightening tube 4, the transmission shaft 2, the sheath tube 3, and the way in which the tightening tube 4 locks the chuck 5 through the locking part 6 are all existing technologies and will not be elaborated here.

[0050] Reference Figure 3 Specifically, the handle 7 is in the shape of a round rod, the finger ring 8 is in the shape of a circular ring, the hole formed by the finger ring 8 is an inner hole 10, and the axis of the finger ring 8 is perpendicular to the axis of the handle 7. The part of the finger ring 8 close to the handle 7 is a connecting part 24, which extends from the outer periphery of the finger ring 8 and gradually expands into a cylindrical shape that is coaxial with the handle 7 and has the same outer diameter.

[0051] Reference Figure 3 and Figure 4 More specifically, the connecting portion 24 is rotatably connected with the adjusting portion 11, the rotation axis of the adjusting portion 11 is perpendicular to the axes of the handle 7 and the finger ring 8, and one end of the adjusting portion 11 away from its own rotation axis extends into the inner hole 10. The finger ring 8 is provided with an adjusting slot 25 for the adjusting portion 11 to swing in the inner hole 10, and the extension angle of the adjusting slot 25 is greater than 90°.

[0052] There are two stop seats 12 in the handle 7 that move along the vertical length direction of the handle 7, and the two stop seats 12 are symmetrical along the center line of the handle 7. A linkage mechanism is provided between the stop seat 12 and the adjustment part 11. When the adjustment part 11 is swung to adjust the position of the adjustment part 11, the linkage mechanism simultaneously drives the stop seat 12 to move in the handle 7. The adjustment part 11 swings in the adjustment slot 25 to the positions of the two ends that are away from each other, namely the locking end 26 and the unlocking end 27. When the adjustment part 11 swings in the adjustment slot 25 to the unlocking end 27, the linkage mechanism drives the stop seat 12 to be completely received in the handle 7; when the adjustment part 11 swings in the adjustment slot 25 to the locking end 26, the linkage mechanism drives the stop seat 12 to extend out of the periphery of the handle 7.

[0053] Reference Figure 2 and Figure 3When the push-pull seat 9 is adjusting the opening and closing of the chuck 5, the position of the push-pull seat 9 on the handle 7 is always between the side of the stop seat 12 away from the finger ring 8 and the end of the handle 7 away from the finger ring 8. When the stop seat 12 extends out of the handle 7, the push-pull seat 9 moves to abut against the side of the stop seat 12 away from the finger ring 8. At this time, the chuck 5 is in a closed state, and the locking part 6 is not locked with the chuck 5, and the push-pull seat 9 can still be pushed away from the finger ring 8 to drive the chuck 5 to open.

[0054] Therefore, during the operation, the operator first swings the adjustment part 11 to the locking end 26, and at the same time puts the thumb into the finger ring 8 to press the adjustment part 11, so that the adjustment part 11 remains at the locking end 26, so that when the push-pull seat 9 is moved during the operation, it is not easy to move the push-pull seat 9 to the position where the clamp 5 is locked. After confirming that the clamp 5 has clamped the wound, the adjustment part 11 is swung to the unlocking end 27 and pressed against the adjustment part 11 again, so that the push-pull seat 9 can continue to move toward the finger ring 8, so as to drive the clamp 5 to cooperate with the locking part 6.

[0055] The adjusting portion 11 may be in a sheet shape or a rod shape. In the present embodiment, the adjusting portion 11 is in a sheet shape which is easier to press.

[0056] Reference Figure 5 and Figure 6 As for the linkage mechanism, the linkage mechanism includes a hinge shaft 13, a linkage rod 14 and a conversion assembly 15. The hinge shaft 13 is fixed to the rotating end of the adjusting portion 11 and is coaxial with the rotating end of the adjusting portion 11. The two ends of the hinge shaft 13 that are far from each other extend out of the two opposite sides of the adjusting portion 11, respectively, and the part of the hinge shaft 13 that extends out of the side of the adjusting portion 11 rotates in the connecting portion 24 at the same time.

[0057] There are two linkage rods 14, which are in the shape of square rods with their length extending in a direction parallel to that of the handle 7. Both linkage rods 14 slide in the handle 7 and the connecting portion 24 along the length direction parallel to the handle 7, and the two linkage rods 14 are respectively located on opposite sides of the handle 7. More specifically, the two linkage rods 14 correspond to the two stop seats 12, respectively, and the two linkage rods 14 correspond to the two ends of the hinge shaft 13 that are away from each other. Specifically, one end of the linkage rod 14 close to the finger ring 8 is opposite to the outer peripheral wall of the hinge shaft 13, and one end of the linkage rod 14 away from the finger ring 8 is against the opposite stop seat 12.

[0058] The conversion assembly 15 is arranged between the hinge shaft 13 and the linkage rod 14. When the adjustment part 11 swings, the linkage rod 14 is driven to move by the conversion assembly 15. The linkage rod 14 has a first inclined surface 18 at one end away from the finger ring 8. The linkage rod 14 abuts against the stop seat 12 through the first inclined surface 18, and a magnet (not shown in the figure) for magnetically attracting the stop seat 12 is embedded in the linkage rod 14, so that the stop seat 12 always abuts against the first inclined surface 18 when the linkage rod 14 moves in the handle 7.

[0059] Reference Figure 4 , Figure 5 and Figure 7 Specifically, the first inclined surface 18 is inclined from the direction away from the finger ring 8 to the direction away from the stop seat 12. When the linkage rod 14 moves toward the direction close to the finger ring 8, the stop seat 12 is attracted by the first inclined surface 18 and gradually moves toward the direction of being recovered to the handle rod 7; and when the linkage rod 14 moves toward the direction away from the finger ring 8, the stop seat 12 is gradually pushed out of the handle rod 7 by the first inclined surface 18. Further, in order to improve the abutting effect between the stop seat 12 and the first inclined surface 18, the stop seat 12 forms a second inclined surface 19 with an inclination angle consistent with the first inclined surface 18 on one side of the first inclined surface 18. The stop seat 12 is in contact with the first inclined surface 18 through the second inclined surface 19, so as to increase the abutting area between the stop seat 12 and the linkage rod 14, thereby increasing the magnetic attraction effect of the linkage rod 14 on the stop seat 12.

[0060] Reference Figure 5 and Figure 6 , wherein the conversion assembly 15 includes a conversion tooth 151 and a rack 152. The conversion tooth 151 is in the shape of a gear tooth. The conversion tooth 151 is fixed on the outer wall of the hinge shaft 13 away from both ends, and a plurality of conversion teeth 151 are fixed at each end of the hinge shaft 13 at evenly spaced intervals along the circumference of the hinge shaft 13. The rack 152 is embedded in a side of the linkage rod 14 relative to the hinge shaft 13. The teeth in the rack 152 are distributed along the length direction of the linkage rod 14. The conversion teeth 151 at both ends of the hinge shaft 13 are respectively engaged with the racks 152 of the two linkage rods 14. Therefore, when the hinge shaft 13 rotates, the engagement of the conversion tooth 151 and the rack 152 can simultaneously drive the two linkage rods 14 to move synchronously along the length direction of the handle rod 7, thereby driving the stop seat 12 to move.

[0061] Reference Figure 3Furthermore, the push-pull seat 9 includes a protruding section 91 and a recessed section 92. The protruding section 91 is in a frustum shape, and the recessed section 92 is in a truncated cone shape. The protruding section 91 and the recessed section 92 are coaxially slidably sleeved on the outer wall of the handle rod 7. The protruding section 91 has two sections, and the two protruding sections 91 are coaxially fixed to the two ends of the recessed section 92 that are far away from each other, and the outer diameters of the two protruding sections 91 gradually decrease toward the recessed section 92. The outer diameter of the recessed section 92 is consistent with the minimum outer diameter of the protruding section 91, so that the outer periphery of the recessed section 92 is recessed relative to the outer periphery of the protruding section 91, so that the operator can hold the recessed section 92 with the index finger and the middle finger together and push and pull the push-pull seat 9.

[0062] Adaptively, the handle 7 is provided with a travel hole 20 along its length direction, the travel hole 20 passes through the two opposite sides of the handle 7, and the protruding section 91 and the recessed section 92 are both fixed with a travel portion 21 extending into the travel hole 20, and the travel portion 21 slides in the travel hole 20 along the length direction of the handle 7 to limit the coaxial rotation of the push-pull seat 9 relative to the handle 7 and guide the movement of the push-pull seat 9 along the length direction of the handle 7. In addition, the transmission shaft 2 extends into the travel hole 20 and is fixed to the travel portion 21, and the travel portion 21 drives the transmission shaft 2 to move while the push-pull seat 9 moves.

[0063] Reference Figure 3 and Figure 4 Furthermore, the outer wall of the handle 7 is provided with a plurality of grooves 22 at intervals along its circumference, and the extension position of the grooves 22 is located between the stop seat 12 and the end of the handle 7 away from the finger ring 8, and the plurality of grooves 22 on the handle 7 are symmetrically arranged relative to the travel hole 20. The handle 7 is integrally formed with a plurality of evenly spaced limiting teeth 23 in the grooves 22 along the length direction of the handle 7, and the side of the limiting teeth 23 away from the axis of the handle 7 is lower than the outer circumference of the handle 7.

[0064] The recessed section 92 includes an elastic portion 921 and a fixed portion 922 alternately arranged along the circumference of the handle rod 7, the elastic portion 921 is connected between two adjacent fixed portions 922, and similarly, the fixed portion 922 is connected between two adjacent elastic portions 921, and the position of the elastic portion 921 corresponds to the groove 22 of the handle rod 7. The elastic portion 921 and the fixed portion 922 are both in the shape of a long strip extending along the length direction of the handle rod 7, the fixed portion 922 is a hard material and is fixed between the two protruding portions to maintain the relative positioning between the two protruding portions, and the elastic portion 921 is made of a material capable of elastic deformation, and in this embodiment, the elastic portion 921 is made of elastic rubber.

[0065] The operator can abut against the elastic part 921 on the clamping recessed section 92, and the elastic part 921 is located outside the groove 22 in a natural state. When it is necessary to temporarily position the position of the push-pull seat 9 relative to the handle 7 to observe the state of the chuck 5, by increasing the clamping force to squeeze the elastic part 921, the elastic part 921 can be elastically deformed and pressed into the groove 22 and abut against the limiting teeth 23, and the elastic part 921 that undergoes elastic deformation enters the gap between adjacent limiting teeth 23 and abuts against the tooth surface of the limiting teeth 23, thereby limiting the movement of the push-pull seat 9 relative to the handle 7 through the cooperation of the elastic part 921 and the limiting teeth 23. In addition, when the operator adjusts the adjustment part 11 or when the exchanger holds the push-pull seat 9, the push-pull seat 9 can also be kept stable by squeezing the elastic part 921; wherein, when the exchanger holds the push-pull seat 9, the current operator and the exchanged operator squeeze different elastic parts 921 respectively to improve the stability of the exchange process.

[0066] The present application also provides a method for controlling a clamp device, comprising the following steps:

[0067] Step 1: When the chuck 5 has not yet entered the body of the surgical object, the adjusting portion 11 is first pushed to the locking end 26 to keep the stop seat 12 in a state of being moved out of the handle 7, and then the chuck 5 is inserted into the body of the surgical object;

[0068] Step 2: Push and pull the push seat relative to the handle 7 along the length direction of the handle 7 to drive the chuck 5 to open and close;

[0069] Step 3: After making sure that the chuck 5 has clamped and closed the wound, press the elastic portion 921 to make it interfere with the limiting tooth 23, so that the push-pull seat 9 is positioned relative to the handle rod 7, and then push the adjustment portion 11 to the unlocking end 27 to retract the stop seat 12 into the handle rod 7, and then pull the push-pull seat 9 toward the finger ring 8, so that the chuck 5 is locked by the tightening tube 4 and remains in a closed state, and the chuck 5 is separated from the transmission shaft 2, so that the chuck 5 remains in the body of the surgical subject.

[0070] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A clamping device, comprising a clamp (5), a tightening tube (4), a transmission shaft (2) and a sheath tube (3), wherein the clamp (5) moves in the tightening tube (4), the tightening tube (4) has a locking portion (6) for locking the clamp (5), the transmission shaft (2) controls the movement of the clamp (5), and the sheath tube (3) is sleeved on the transmission shaft (2), characterized in that: It also comprises a handle bar (7), a finger ring (8) and a push-pull seat (9); the finger ring (8) is connected to one end of the handle bar (7), and the sheath tube (3) is connected to the end of the handle bar (7) away from the finger ring (8); the push-pull seat (9) is slidably sleeved on the handle bar (7) along the length direction of the handle bar (7), and the end of the transmission shaft (2) away from the chuck (5) is connected to the push-pull seat (9); The hole formed by the finger ring (8) is an inner hole (10), and an adjusting portion (11) is swingably provided on the finger ring (8) and extends into the inner hole (10); a stop seat (12) is movable in the handle (7), and a linkage mechanism is provided between the adjusting portion (11) and the stop seat (12), so that when the adjusting portion (11) is pushed to swing, the linkage mechanism can drive the stop seat (12) to extend out or be retracted into the handle (7); When the stop seat (12) extends out of the handle (7) and the push-pull seat (9) abuts against one end of the stop seat (12) that is away from the finger ring (8), the chuck (5) is closed and the chuck (5) and the locking portion (6) are in a separated state; The linkage mechanism includes A hinge shaft (13) fixed to the adjusting portion (11) and rotatable in the finger ring (8), and coaxial with the rotation axis of the adjusting portion (11); A linkage rod (14) is slidable in the handle rod (7) along the length direction of the handle rod (7), the end of the linkage rod (14) away from the finger ring (8) has a first inclined surface (18), and the stop seat (12) is magnetically attracted to the first inclined surface (18); and A conversion assembly (15) is arranged between the hinge shaft (13) and the linkage rod (14), and is used to drive the linkage rod (14) to move in the handle rod (7) when the hinge shaft (13) rotates.

2. A clamp device according to claim 1, characterized in that: The conversion assembly (15) comprises conversion teeth (151) and a rack (152); the conversion teeth (151) are evenly spaced and distributed on the outer wall of the hinge shaft (13) along the circumference of the hinge shaft (13); the rack (152) is embedded in the linkage rod (14) and meshes with the conversion teeth (151).

3. A clamp device according to claim 1, characterized in that: The stop seat (12) has a second inclined surface (19), and the second inclined surface (19) is attached to and magnetically attracted to the first inclined surface (18).

4. A clamp device according to claim 1, characterized in that: There are two stop seats (12), the linkage rods (14) correspond one to one with the stop seats (12), and the hinge shaft (13) controls the two linkage rods (14) simultaneously.

5. A clamp device according to claim 1, characterized in that: The push-pull seat (9) comprises a protruding section (91) and a recessed section (92); the protruding section (91) and the recessed section (92) are both sleeved on the outer wall of the handle rod (7); there are two protruding sections (91); the two protruding sections (91) are respectively connected to two ends of the recessed section (92) along the length direction of the handle rod (7); and the outer periphery of the recessed section (92) is recessed relative to the outer periphery of the protruding section (91) towards the outer wall of the handle rod (7).

6. A clamp device according to claim 5, characterized in that: The handle rod (7) is provided with a travel hole (20) penetrating two opposite sides of the handle rod (7), and the protruding section (91) and the recessed section (92) both have a travel portion (21) that slides in the travel hole (20).

7. A clamp device according to claim 5, characterized in that: The outer wall of the handle rod (7) is provided with a groove (22) along the length direction of the handle rod (7), and the handle rod (7) forms a plurality of limiting teeth (23) in the groove (22) distributed along the length direction of the handle rod (7); the recessed section (92) has an elastic portion (921), the elastic portion (921) is opposite to the groove (22), and the elastic portion (921) can enter the groove (22) and be stuck in the gap between the limiting teeth (23) after being pressed.

8. A clamp device according to claim 7, characterized in that: A plurality of the grooves (22) are arranged along the circumference of the handle rod (7), and the elastic portions (921) correspond one-to-one to the grooves (22).

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