Haemostatic forceps handle assembly and haemostatic forceps

Abstract

According to the handle assembly of the hemostatic forceps and the hemostatic forceps, in the handle assembly, a wrench rotates to an initial position, a clip feeding position and a percussion position which are sequentially arranged, and a transmission main shaft responds to actuation of the wrench to move to a first position, a second position and a third position which are sequentially arranged from near to far; a first stop piece is arranged between the transmission main shaft and the shell, a connecting part of the first stop piece is connected to the transmission main shaft and is in linkage with the transmission main shaft in the far-near direction, and a stop part of the first stop piece is matched with a guide loop on the shell; the connecting part moves along with a working stroke of the transmission main shaft to drive the stop part to advance along the guide loop and move around the guide loop by a circle, and the working stroke is that the transmission main shaft sequentially moves to the second position, the third position and the first position from the first position; and when the transmission main shaft moves from the first position to the second position, the stop part is matched with a second stop piece on the guide loop, the stop part is allowed to advance, and the stop part is prevented from retreating. And the wrench can be prevented from retreating in the clamp feeding process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a hemostatic forceps handle component and a hemostatic forceps. Background Art

[0002] In order to fully expose the surgical field during surgery, it is necessary to ligate the blood vessels around the target tissue to stop bleeding. Hemostasis technology has become one of the core basic surgical operation techniques. Surgical operations on any part of the human body almost without exception involve bleeding and hemostasis, and hemostatic forceps and hemostatic clips are generally used to close and stop bleeding.

[0003] In order to improve the efficiency of surgery, hemostatic forceps capable of continuous clip delivery have emerged. The clip compartment of the hemostatic forceps with continuous clip delivery stores multiple hemostatic clips. After the hemostatic forceps completes the firing of one hemostatic clip to close the clip, the next hemostatic clip can be immediately delivered to the clamp for the next firing, thus realizing the continuous firing of the hemostatic forceps on the hemostatic clips.

[0004] Some of the hemostatic forceps currently in clinical use are manually-fired continuous-action hemostatic forceps. Manually-fired continuous-action hemostatic forceps generally include a handle assembly, a shaft assembly, and a clamp, wherein the shaft assembly extends distally from the handle assembly and defines a longitudinal axis, a plurality of hemostatic clips are arranged in the shaft assembly, and the clamp is installed at the distal end of the shaft assembly. The handle assembly includes a housing, a wrench, and a transmission spindle at least partially arranged in the housing, the wrench is rotatably mounted on the housing, the wrench is transmission-connected to the transmission spindle, the transmission spindle is transmission-connected to the shaft assembly, the transmission spindle can move longitudinally in response to the actuation of the wrench, and then drive the shaft assembly to sequentially complete the clip delivery and firing actions. Specifically, the squeezing wrench rotates from the initial position to the clamp delivery position, and the transmission spindle moves distally along the longitudinal axis in response to the actuation of the wrench, driving the shaft assembly to complete the clamp delivery action; the squeezing wrench rotates from the clamp delivery position to the firing position, and the transmission spindle continues to move distally along the longitudinal axis in response to the actuation of the wrench, driving the shaft assembly to complete the firing action; release the wrench, the wrench automatically returns to the initial position from the firing position, the transmission spindle automatically moves proximally along the longitudinal axis to the initial position (i.e., reset), and the shaft assembly automatically returns to its initial state.

[0005] During the process of rotating the gripping wrench from the initial position to the clamp delivery position (i.e., during the delivery of the hemostatic forceps), the wrench is required not to retract, otherwise the sorting state of the hemostatic clamps in the shaft assembly will be disordered, resulting in poor clamp delivery or jamming.

[0006] For this reason, a hemostatic forceps handle assembly and a hemostatic forceps are badly needed. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In view of the problems existing in the above technology, the present invention solves the problems to a certain extent. To this end, the first purpose of the present invention is to provide a hemostatic forceps handle assembly, which can prevent the wrench from retreating during the clamp delivery process, and has a simple structure and a small size.

[0009] The second purpose of the utility model is to provide a hemostatic forceps having the above-mentioned hemostatic forceps handle assembly.

[0010] (II) Technical solution

[0011] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0012] In the first aspect, the utility model provides a hemostatic forceps handle assembly, including a shell, a wrench and a transmission spindle, the wrench is rotatably mounted on the shell, and the transmission spindle is slidably mounted on the shell; the wrench rotates to an initial position, a clamp delivery position and a firing position arranged in sequence, and the transmission spindle moves to a first position, a second position and a third position arranged in sequence from near to far in response to the actuation of the wrench; a first stop member is arranged between the transmission spindle and the shell, the first stop member has a connecting portion and a stop member, a guide circuit is arranged on the shell, and a second stop member is arranged on the guide circuit; the connecting portion is connected to the transmission spindle and is arranged in linkage with the transmission spindle in the near and far direction, and the stop member cooperates with the guide circuit; the connecting portion follows the movement of a working stroke of the transmission spindle, drives the stop member to move forward along the guide circuit, and moves around the guide circuit for one circle, and the working stroke is that the transmission spindle moves from the first position to the second position, the third position and the first position in sequence;

[0013] During the working stroke, when the transmission main shaft moves from the first position to the second position, the stop portion cooperates with the second stop member, and the second stop member allows the stop portion to move forward along the guide loop and prevents the stop portion from moving backward along the guide loop.

[0014] Optionally, the transmission main shaft moves from the first position to the second position and the third position in sequence, and the connecting part drives the stop part to always move distally along the guide loop; the transmission main shaft moves from the third position to the first position, and the connecting part drives the stop part to always move proximally along the guide loop.

[0015] Optionally, the connecting portion is rotatably connected to the transmission main shaft, and the stop portion and the connecting portion are staggered.

[0016] Optionally, the guide circuit includes a first passage and a second passage that are connected in sequence, the proximal end of the first passage is connected with the proximal end of the second passage to form a first connecting point, and the distal end of the first passage is connected with the distal end of the second passage to form a second connecting point; the transmission main shaft is located at the first position, and the stop part is located at the starting point, and the starting point is at the proximal end of the first passage and on the proximal side of the first connecting point; during the working stroke, the transmission main shaft moves from the first position to the third position, driving the stop part to move along the first passage to the second connecting point, and the transmission main shaft moves from the third position to the first position, driving the stop part to move along the second passage through the first connecting point and back to the starting point.

[0017] Optionally, both the first passage and the second passage are grooves, and the stop portion extends into the groove; the connecting portion moves with the transmission main shaft, driving the stop portion to move along the groove.

[0018] Optionally, a first guide structure is provided at the proximal end of the second passage, and a second guide structure is provided at the distal end of the first passage; during the movement of the stop portion along the guide loop, the first guide structure allows the stop portion to enter the first passage from the second passage, and the first guide structure prevents the stop portion from entering the second passage from the first passage, and the second guide structure allows the stop portion to enter the second passage from the first passage, and the second guide structure prevents the stop portion from entering the first passage from the second passage.

[0019] Optionally, the second stop member includes a plurality of stop teeth connected in sequence from near to far, and the plurality of stop teeth are arranged on the first passage and extend along the first passage; during the working stroke, when the transmission main shaft moves from the first position to the second position, the stop part cooperates with the stop teeth, and the stop teeth allow the stop part to move forward along the guide loop and prevent the stop part from retreating along the guide loop.

[0020] Optionally, among the multiple stop teeth, the tooth top height of the most distal stop tooth is the largest.

[0021] Optionally, the transmission spindle moves to the third position, and the guide circuit prevents the stopper from continuing to move distally.

[0022] In a second aspect, the utility model provides a hemostatic forceps having the hemostatic forceps handle assembly as described above.

[0023] (III) Beneficial effects

[0024] The beneficial effects of the utility model are:

[0025] The hemostatic forceps provided by the utility model can realize one-way stopping of the wrench in the clamp delivery process through the cooperation of the wrench, the transmission main shaft, the first stop piece, the guide loop and the second stop piece. On the basis of ensuring the clamp delivery, firing and resetting of the hemostatic forceps, it can also realize the one-way stopping of the wrench in the clamp delivery process, that is, the wrench and the transmission main shaft cannot retreat in the clamp delivery process, thereby ensuring the sorting state of the hemostatic clamps in the shaft assembly, which is conducive to stable clamp delivery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The utility model is described with the help of the following drawings:

[0027] Figure 1 It is a structural schematic diagram of the hemostatic forceps according to Example 1 of the utility model, showing the internal structure of the handle assembly, wherein the wrench is in the initial position and the transmission spindle is in the first position;

[0028] Figure 2 for Figure 1 A schematic diagram of the cooperation between the first stop member and the guide loop on the housing;

[0029] Figure 3 for Figure 2 A magnified schematic diagram of area A in the middle;

[0030] Figure 4 It is a structural schematic diagram of the hemostatic forceps according to Example 1 of the utility model, showing the internal structure of the handle assembly, wherein the wrench is in the clamp delivery position and the transmission spindle is in the second position;

[0031] Figure 5 for Figure 4 A schematic diagram of the cooperation between the first stop member and the guide loop on the housing;

[0032] Figure 6 It is a structural schematic diagram of the hemostatic forceps according to Example 1 of the utility model, showing the internal structure of the handle assembly, wherein the wrench is in the firing position and the transmission spindle is in the third position;

[0033] Figure 7 for Figure 6 A schematic diagram of the cooperation between the first stop member and the guide loop on the housing;

[0034] Figure 8 It is a structural schematic diagram of the hemostatic forceps according to Example 1 of the utility model, showing the internal structure of the handle assembly, wherein the wrench is at a certain position during the resetting process, and the transmission spindle is at a certain position during the resetting process;

[0035] Fig. 9 for Figure 8 A schematic diagram of the cooperation between the first stop member and the guide loop on the housing;

[0036] Fig.10 It is a schematic diagram of the three-dimensional structure of the first stop member according to Example 1 of the utility model.

[0037] [Description of Reference Numerals]

[0038] 11: housing; 12: wrench; 13: transmission spindle; 14: first stop member; 15: guide circuit; 16: second stop member;

[0039] 141: connecting portion; 142: stopping portion;

[0040] 151: first passage; 152: second passage; 153: stopper; 154: first guide surface; 155: second guide surface;

[0041] 161: stop tooth;

[0042] 2: shaft assembly;

[0043] 3: Clamp. DETAILED DESCRIPTION

[0044] It should be noted that the “near” mentioned in this article refers to the side close to the operator, and the “far” refers to the side close to the patient. The directional terms such as “upper”, “lower”, “front”, “back”, “left” and “right” mentioned in this article are used in conjunction with the patient’s position. Figure 1 The orientation is used as a reference, and the direction from front to back is also the direction from far to near.

[0045] Example 1

[0046] like Figures 1 to 10 As shown, this embodiment provides a manually-fired continuous-fire hemostatic forceps, which includes a handle assembly, a shaft assembly 2 and a clamp 3.

[0047] The handle assembly includes a housing 11, a wrench 12, and a transmission main shaft 13 at least partially arranged in the housing 11, and the housing 11 has a handle for holding. The first end of the wrench 12 is rotatably mounted on the housing 11 through a wrench 12 reset member (such as a wrench 12 spring), and the second end of the wrench 12 and the handle are separated from each other to form a V-shaped opening. When the wrench 12 is gripped and rotated, the reset member of the wrench 12 is elastically deformed, and the second end of the wrench 12 approaches the handle to reduce the V-shaped opening. When the wrench 12 is released, the reset member of the wrench 12 is elastically restored to drive the second end of the wrench 12 away from the handle to increase the V-shaped opening.

[0048] The shaft assembly 2 extends distally from the handle assembly and defines a longitudinal axis. Multiple hemostatic clips are arranged in the shaft assembly 2. The clamp 3 is installed at the distal end of the shaft assembly 2. The transmission spindle 13 is installed in the housing 11 through a spindle reset member. The transmission spindle 13 is transmission-connected to the shaft assembly 2. The wrench 12 is transmission-connected to the transmission spindle 13.

[0049] To facilitate the cooperation between the wrench 12 and the transmission spindle 13 , in this embodiment, the transmission spindle 13 is located above the wrench 12 .

[0050] The wrench 12 can rotate between the initial position, the clamp delivery position and the firing position arranged in sequence, and the transmission main shaft 13 can move between the first position, the second position and the third position arranged in sequence from near to far along the longitudinal axis. The gripping wrench 12 rotates from the initial position to the clamp delivery position, and the transmission main shaft 13 moves from the first position to the second position in response to the actuation of the wrench 12, and the main shaft reset member is elastically deformed, and the transmission main shaft 13 drives the shaft assembly 2 to complete the clamp delivery action; the gripping wrench 12 rotates from the clamp delivery completion position to the firing position, and the transmission main shaft 13 moves from the second position to the third position in response to the actuation of the wrench 12, and the main shaft reset member continues to be elastically deformed, and the transmission main shaft 13 drives the shaft assembly 2 to clamp the clamp 3 to close the hemostatic clip; the wrench 12 is released, and the reset member of the wrench 12 is elastically restored to drive the wrench 12 to automatically return from the firing position to the initial position, and at the same time, the main shaft reset member is elastically restored to drive the transmission main shaft 13 to automatically return from the third position to the first position, and at the same time, the shaft assembly 2 returns to the initial state.

[0051] A first stopper 14 is provided between the transmission main shaft 13 and the housing 11. The first stopper 14 has a connecting portion 141 and a stopper 142. A guide loop 15 is provided on the housing 11. The guide loop 15 has a second stopper 16. The connecting portion 141 is connected to the transmission main shaft 13 and is arranged in linkage with the transmission main shaft 13 in the far and near direction. The stopper 142 cooperates with the guide loop 15. The connecting portion 141 follows the movement of the transmission main shaft 13 in a working stroke, drives the stopper 142 to move forward along the guide loop 15, and moves around the guide loop 15 for one circle. The working stroke is that the transmission main shaft 13 moves from the first position to the second position, the third position and the first position in sequence. In the working stroke, when the transmission main shaft 13 moves from the first position to the second position, the stopper 142 cooperates with the second stopper 16. The second stopper 16 allows the stopper 142 to move forward along the guide loop 15 and prevents the stopper 142 from retreating along the guide loop 15.

[0052] Specifically, in this embodiment, the guide loop 15 has a unique forward path, that is, the connecting portion 141 follows the movement of the transmission main shaft 13 in a working stroke, driving the stop portion 142 to always move forward along the guide loop 15 in a unique clockwise rotation direction (i.e., clockwise or counterclockwise).

[0053] The hemostatic forceps configured in this way are used for user operation, and the working principle is as follows: first, the user starts to squeeze the wrench 12 from the initial position and rotates it, driving the transmission spindle 13 to move distally from the first position until it moves to the second position to complete the clamp delivery action. In this process, the connecting portion 141 follows the movement of the transmission spindle 13 to drive the stop portion 142 to move forward along the guide loop 15, and the stop portion 142 will cooperate with the second stop member 16. The second stop member 16 allows the stop portion 142 to move forward along the guide loop 15, and the second stop member 16 prevents the stop portion 142 from retreating along the guide loop 15, so that the wrench 12 and the transmission spindle 13 are not in the clamp delivery process. It can retract, which is beneficial to stable clamp delivery; then the grip and pressure wrench 12 is rotated to drive the transmission spindle 13 to move to the third position, completing the firing action. In this process, the connecting part 141 follows the movement of the transmission spindle 13 to drive the stop part 142 to continue to move along the guide loop 15; finally, the user releases the wrench 12, and the wrench 12 rotates from the firing position to the initial position. At the same time, the transmission spindle 13 moves proximally from the third position until it moves to the first position, completing the resetting action. In this process, the connecting part 141 follows the movement of the transmission spindle 13 to drive the stop part 142 to continue to move along the guide loop 15 until it completes one circle around the guide loop 15.

[0054] The hemostatic forceps provided in this embodiment, through the cooperation of the wrench 12, the transmission main shaft 13, the first stop member 14, the guide loop 15 and the second stop member 16, can not only ensure the delivery, firing and resetting of the hemostatic forceps, but also achieve the one-way stop of the wrench 12 during the delivery process, that is, the wrench 12 and the transmission main shaft 13 cannot retreat during the delivery process, thereby ensuring the sorting state of the hemostatic clamps in the shaft assembly 2, which is conducive to stable delivery.

[0055] Preferably, the transmission main shaft 13 moves from the first position to the second position and the third position in sequence, and the connection portion 141 drives the stop portion 142 to move distally along the guide loop 15; the transmission main shaft 13 moves from the third position to the first position, and the connection portion 141 drives the stop portion 142 to move proximally along the guide loop 15. This is conducive to the stable matching of the transmission main shaft 13, the first stop member 14 and the guide loop 15.

[0056] In this embodiment, the guide loop 15 extends in the direction of the transmission main shaft 13 (i.e., the far and near direction), and also extends in a direction perpendicular to the transmission main shaft 13. Preferably, the connecting portion 141 is rotatably connected to the transmission main shaft 13, and the stop portion 142 is staggered with the connecting portion 141. In this way, the connecting portion 141 can move with the transmission main shaft 13, thereby driving the stop portion 142 to move along the guide loop 15, and because the connecting portion 141 is rotatably connected to the transmission main shaft 13, the stop portion 142 can rotate around the connecting portion 141, which is conducive to the movement of the stop portion 142 along the guide loop 15 in a direction perpendicular to the transmission main shaft 13, and facilitates the cooperation between the stop portion 142 and the guide loop 15.

[0057] Furthermore, during the movement of the first stopper 14 following the transmission spindle 13 through a working stroke, the connection portion 141 and the stopper 142 are always arranged in sequence from near to far, or the connection portion 141 and the stopper 142 are always arranged in sequence from far to near. In this way, during the movement of the first stopper 14 following the transmission spindle 13 through a working stroke, it is beneficial to drive the stopper 142 to move along the guide loop 15.

[0058] Specifically, in this embodiment, during the movement of the first stop member 14 following the transmission main shaft 13 during a working stroke, the connecting portion 141 and the stop portion 142 are always arranged in sequence from near to far.

[0059] Preferably, if Figure 3 As shown, the guide circuit 15 includes a first passage 151 and a second passage 152 which are connected in sequence, the proximal end of the first passage 151 is connected with the proximal end of the second passage 152 to form a first connection point, and the distal end of the first passage 151 is connected with the distal end of the second passage 152 to form a second connection point; the transmission main shaft 13 is located at the first position, and the stop portion 142 is located at the starting point, and the starting point is at the proximal end of the first passage 151 and is located near the first connection point. During the working stroke, the transmission main shaft 13 moves from the first position to the third position, driving the stop portion 142 to move along the first passage 151 to the second connection point, and the transmission main shaft 13 moves from the third position to the first position, driving the stop portion 142 to move along the second passage 152 through the first connection point and back to the starting point. Setting the guide circuit 15 in such a shape is conducive to the cooperation between the stop portion 142 and the guide circuit 15.

[0060] Specifically, in this embodiment, the first passage 151 and the second passage 152 surround to form a parallelogram. Optionally, the first passage 151 and the second passage 152 surround to form a rugby ball shape.

[0061] Preferably, the first passage 151 and the second passage 152 are grooves, and the stopper 142 extends into the grooves; the connecting part 141 moves with the transmission main shaft 13, driving the stopper 142 to move along the grooves. The groove-shaped guide loop 15 is provided to make the cooperation between the stopper 142 and the guide loop 15 more stable.

[0062] Preferably, the second stop member 16 includes a plurality of stop teeth 161 connected in sequence from near to far, and the plurality of stop teeth 161 are arranged on the first passage 151 and extend along the first passage 151; during the working stroke, when the transmission main shaft 13 moves from the first position to the second position, the stop portion 142 cooperates with the stop teeth 161, and the stop teeth 161 allow the stop portion 142 to move forward along the guide loop 15, and prevent the stop portion 142 from retreating along the guide loop 15. Further, during the working stroke, when the transmission main shaft 13 moves from the first position to the second position, the stop portion 142 is driven to move from the starting point to the clamping point along the first passage 151, and the stop portion 142 at the clamping point cooperates with the farthest stop tooth 161 among the plurality of stop teeth 161.

[0063] Further preferably, the stop teeth 161 include a guide slope and a stop surface arranged in sequence from near to far; during the cooperation between the stop portion 142 and the stop tooth 161, the stop portion 142 can move distally along the guide slope and pass over the stop tooth 161. After passing over the stop tooth 161, the stop portion 142 abuts against the stop surface to prevent the stop portion 142 from moving proximally. In this way, the stop tooth 161 allows the stop portion 142 to move forward along the guide loop 15 and prevents the stop portion 142 from retreating along the guide loop 15.

[0064] Further preferably, the tooth top height of the most distal stop tooth 161 among the plurality of stop teeth 161 is the largest. In this way, the depth of the stop tooth 161 groove corresponding to the most distal stop tooth 161 is the deepest compared to the stop tooth 161 grooves corresponding to other stop teeth 161; since the stop portion 142 extends into the stop tooth 161 groove and is blocked by the stop tooth 161 corresponding to the stop tooth 161 groove, the stop portion 142 and the stop tooth 161 are matched, so when the stop portion 142 cooperates with the most distal stop tooth 161, the stop portion 142 extends deeper into the stop tooth 161 groove, and compared to the cooperation between the stop portion 142 and other stop teeth 161, a louder impact sound can be generated to remind the user to deliver the clip to the right position.

[0065] Preferably, the transmission main shaft 13 moves to the third position, and the guide loop 15 prevents the stop portion 142 from continuing to move distally. In this way, the firing limit of the transmission main shaft 13 is achieved, and the user can be effectively prompted to fire in place.

[0066] like Figure 6 and Figure 7As shown, a stopper 153 is provided at the second connection point, and when the transmission main shaft 13 moves to the third position, the stopper 153 abuts against the stopper 142, preventing the stopper 142 from moving further distally. In this way, the transmission main shaft 13 moves to the third position, and the guide circuit 15 prevents the first stopper 14 from moving further distally.

[0067] Specifically, in this embodiment, the first passage 151 is a first groove, and the second passage 152 is a second groove; at the second connection point, the outer wall of the first groove is connected to the outer wall of the second groove through the first connecting wall, and the first connecting wall serves as a stopper 153. It should be noted that "inside" refers to the inside of the shape surrounded by the guide loop 15, and "outside" refers to the outside of the shape surrounded by the guide loop 15. The stopper 153 set in this way makes the guide loop 15 simple in structure and can achieve the stop position of the wrench 12 at the firing position.

[0068] Preferably, the proximal end of the second passage 152 is provided with a first guide structure, and the distal end of the first passage 151 is provided with a second guide structure; during the movement of the stopper 142 along the guide loop 15, the first guide structure allows the stopper 142 to enter the first passage 151 from the second passage 152, and the first guide structure prevents the stopper 142 from entering the second passage 152 from the first passage 151, and the second guide structure allows the stopper 142 to enter the second passage 152 from the first passage 151, and the second guide structure prevents the stopper 142 from entering the first passage 151 from the second passage 152. With such a configuration, the stopper 142142 can move in a unique direction at the intersection of the guide loop 15 (i.e., the first connection point and the second connection point), ensuring that the stopper 142 always moves in a unique clockwise direction (i.e., clockwise or counterclockwise) along the guide loop 15.

[0069] Specifically, Figure 3 As shown, in the present embodiment, the first guiding structure includes a first guiding surface 154 and a first blocking surface which are arranged at the bottom of the second groove and are arranged in sequence along the second passage 152, the first end of the first blocking surface is connected to the bottom of the fourth groove, the second end of the first blocking surface extends in a direction away from the bottom of the fourth groove, the first end of the first guiding surface 154 is connected to the bottom of the fourth groove, and the second end of the first guiding surface 154 is connected to the second end of the first blocking surface; during the movement of the stop portion 142 along the guiding loop 15, the stop portion 142 can move along the first guiding surface 154 until it passes over the first blocking surface and reaches the first connecting point to enter the first groove, at the first connecting point the stop portion 142 abuts against the first blocking surface, the first blocking surface prevents the stop portion 142 from entering the second groove, and allows the stop portion 142 to enter the first groove and move along the first groove.

[0070] The second guiding structure includes a second guiding surface 155 and a second blocking surface which are arranged at the bottom of the first groove and arranged in sequence from near to far, wherein the first end of the second blocking surface is connected to the bottom of the first groove, and the second end of the second blocking surface extends in a direction away from the bottom of the first groove, the first end of the second guiding surface 155 is connected to the bottom of the first groove, and the second end of the second guiding surface 155 is connected to the second end of the second blocking surface; during the movement of the stop portion 142 along the guiding loop 15, the stop portion 142 can move along the second guiding surface 155 until it passes over the second blocking surface and reaches the second connecting point to enter the second groove, and at the second connecting point the stop portion 142 abuts against the second blocking surface, and the second blocking surface prevents the stop portion 142 from entering the first groove, allowing the stop portion 142 to enter the second groove and move along the second groove.

[0071] The first guiding structure and the second guiding structure arranged in this way have a simple structure.

[0072] Preferably, the first end of the first blocking surface is flush with the inner side wall of the first groove, and the first end of the second blocking surface is flush with the inner side wall of the second groove. In this way, the first blocking surface is arranged to facilitate the stopper 142 to move along the first groove, and the second blocking surface is arranged to facilitate the stopper 142 to move along the second groove.

[0073] Preferably, in this embodiment, the first blocking surface is perpendicular to the bottom of the second groove, and the second blocking surface is perpendicular to the bottom of the first groove. The blocking surface thus arranged can effectively play a blocking role when the stop portion 142 abuts against the blocking surface.

[0074] Optionally, the angle between the first blocking surface and the bottom of the second groove is an acute angle, and the angle between the second blocking surface and the bottom of the first groove is an acute angle. The blocking surface configured in this way can also effectively play a blocking role when the stop portion 142 abuts against the blocking surface.

[0075] In this embodiment, the clamping point is located between the first connection and the second connection, and preferably, a plurality of stop teeth 161 are provided between the first connection and the second connection. In this way, the cooperation process between the stop portion 142 and the stop teeth 161 occurs between the first connection and the second connection, thereby preventing the stop portion 142 from being lifted up and entering the second groove through the first connection due to the cooperation between the stop portion 142 and the stop teeth 161.

[0076] Preferably, during the movement of the first stopper 14 following the transmission main shaft 13 through a working stroke, the stopper 142 is always subjected to the elastic action directed from the transmission main shaft 13 toward the guide loop 15 and abuts against the bottom of the groove of the guide loop 15. In this way, the stopper 142 can move more stably along the guide loop 15, and the cooperation between the stopper 142 and the first and second guide members and the stopper teeth 161 is more stable.

[0077] Preferably, if Fig.10 As shown, the first stopper 14 includes a connecting portion 141, a rod-shaped portion, and a stopper 142 connected in sequence along the far-near direction, the connecting portion 141 extends the rod-shaped portion toward the transmission main shaft 13, and the stopper 142 extends the rod-shaped portion toward the guide loop 15. The first stopper 14 of such a shape facilitates the connection between the rod-shaped portion and the transmission main shaft 13, and facilitates the cooperation between the stopper 142 and the guide loop 15.

[0078] Specifically, in this embodiment, the connecting portion 141, the rod-shaped portion and the stop portion 142 are all columnar, the connecting portion 141 is arranged at the first end portion of the rod-shaped portion, and extends from the first end portion of the rod-shaped portion to the transmission main shaft 13, and the stop portion 142 is arranged at the second end portion of the rod-shaped portion, and extends from the second end portion of the rod-shaped portion to the guide loop 15.

[0079] Further preferably, during the movement of the first stop member 14 following a working stroke of the transmission main shaft 13, the rod-shaped portion is elastically deformed, so that the stop portion 142 provides an elastic action from the transmission main shaft 13 to the guide loop 15, so that the stop portion 142 always abuts against the bottom of the groove of the guide loop 15.

[0080] Specifically, in this embodiment, the connecting portion 141 of the first stopper 14 is connected to the left side of the transmission main shaft 13, and the guide loop 15 is arranged on the left inner wall of the housing 11. Optionally, the connecting portion 141 of the first stopper 14 is connected to the upper side of the transmission main shaft 13, and the guide loop 15 is arranged on the upper inner wall of the housing 11.

[0081] Example 2

[0082] The main difference between this embodiment and embodiment 1 is that:

[0083] The clamping point is located near the first connection, and among the multiple stop teeth, the most proximal stop tooth is located at the starting point of the stop portion, and the most distal stop tooth is located at the clamping point of the stop portion. In this way, it is not necessary to set multiple stop teeth between the first connection and the second connection, so as to avoid the situation that the stop portion is lifted up through the first connection and enters the second groove due to the cooperation between the stop portion and the stop teeth; and the one-way stop in the whole process of clamping can be achieved.

[0084] The rest of the contents are the same as those in Example 1 and will not be repeated here.

[0085] Example 3

[0086] The main difference between this embodiment and embodiment 1 is that:

[0087] The connecting portion of the first stop member is rotatably connected to the transmission main shaft through a torsion spring; during the movement of the first stop member following a working stroke of the transmission main shaft, the torsion spring elastically deforms to provide elastic action to the stop portion, so that the stop portion always abuts against the side wall of the groove of the guide loop.

[0088] In this way, the stop portion can move more stably along the guide loop, and the cooperation between the stop portion and the first and second guide members is more stable.

[0089] Preferably, during the movement of the stop portion along the first passage, the stop portion always abuts against the outer side wall of the first groove; and a plurality of stop teeth are arranged on the outer side wall of the first groove.

[0090] Further preferably, among the multiple stop teeth, the most proximal stop tooth is located at the starting point of the stop portion, and the most distal stop tooth is located at the clamping point of the stop portion. In this way, it is not necessary to arrange multiple stop teeth between the first connection point and the second connection point, so as to avoid the situation that the stop portion is lifted up through the first connection point and enters the second groove due to the cooperation between the stop portion and the stop teeth; and the one-way stop can be achieved in the whole process of clamping.

[0091] The rest of the contents are the same as those in Example 1 and will not be repeated here.

[0092] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0093] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0095] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0096] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A hemostatic forceps handle assembly, characterized in that: It comprises a housing (11), a wrench (12) and a transmission main shaft (13), wherein the wrench (12) is rotatably mounted on the housing (11), and the transmission main shaft (13) is slidably mounted on the housing (11); The wrench (12) rotates to an initial position, a clamping position and a firing position arranged in sequence, and the transmission main shaft (13) moves to a first position, a second position and a third position arranged in sequence from near to far in response to the actuation of the wrench (12); A first stop member (14) is arranged between the transmission main shaft (13) and the housing (11), the first stop member (14) comprising a connecting portion (141) and a stop member (142), a guide circuit (15) is arranged on the housing (11), and a second stop member (16) is arranged on the guide circuit (15); the connecting portion (141) is connected to the transmission main shaft (13) and is arranged in linkage with the transmission main shaft (13) in a distal direction, and the stop member (142) cooperates with the guide circuit (15); the connecting portion (141) follows the movement of the transmission main shaft (13) in a working stroke, drives the stop member (142) to move along the guide circuit (15), and moves around the guide circuit (15) for one circle, and the working stroke is that the transmission main shaft (13) moves from a first position to a second position, a third position and the first position in sequence; During the working stroke, when the transmission main shaft (13) moves from the first position to the second position, the stop portion (142) cooperates with the second stop member (16), and the second stop member (16) allows the stop portion (142) to move forward along the guide loop (15) and prevents the stop portion (142) from moving backward along the guide loop (15).

2. The hemostatic forceps handle assembly according to claim 1, characterized in that: The transmission main shaft (13) moves from the first position to the second position and the third position in sequence, and the connection portion (141) drives the stop portion (142) to always move toward the distal side along the guide loop (15); the transmission main shaft (13) moves from the third position to the first position, and the connection portion (141) drives the stop portion (142) to always move toward the proximal side along the guide loop (15).

3. The hemostatic forceps handle assembly according to claim 1, characterized in that: The connecting portion (141) is rotatably connected to the transmission main shaft (13), and the stop portion (142) is staggered with the connecting portion (141).

4. The hemostatic forceps handle assembly according to claim 1, characterized in that: The guide circuit (15) comprises a first passage (151) and a second passage (152) which are connected in sequence, the proximal end of the first passage (151) is connected with the proximal end of the second passage (152) to form a first connection point, and the distal end of the first passage (151) is connected with the distal end of the second passage (152) to form a second connection point; the transmission main shaft (13) is located at a first position, the stop portion (142) is located at a starting point, and the starting point is at the proximal end of the first passage (151) and is located proximal to the first connection point; During the working stroke, the transmission main shaft (13) moves from the first position to the third position, driving the stop portion (142) to move along the first passage (151) to the second connecting point, and the transmission main shaft (13) moves from the third position to the first position, driving the stop portion (142) to move along the second passage (152) through the first connecting point and return to the starting point.

5. The hemostatic forceps handle assembly according to claim 4, characterized in that: The first passage (151) and the second passage (152) are both grooves, and the stop portion (142) extends into the grooves; the connecting portion (141) moves along with the transmission main shaft (13), driving the stop portion (142) to move along the grooves.

6. The hemostatic forceps handle assembly according to claim 4, characterized in that: A first guide structure is disposed at the proximal end of the second passage (152), and a second guide structure is disposed at the distal end of the first passage (151); During the movement of the stop portion (142) along the guide loop (15), the first guide structure allows the stop portion (142) to enter the first passage (151) from the second passage (152), and the first guide structure prevents the stop portion (142) from entering the second passage (152) from the first passage (151). The second guide structure allows the stop portion (142) to enter the second passage (152) from the first passage (151), and the second guide structure prevents the stop portion (142) from entering the first passage (151) from the second passage (152).

7. The hemostatic forceps handle assembly according to claim 1, characterized in that: The second stop member (16) comprises a plurality of stop teeth (161) connected in sequence from near to far, and the plurality of stop teeth (161) are arranged on the first passage (151) and extend along the first passage (151); During the working stroke, when the transmission main shaft (13) moves from the first position to the second position, the stop portion (142) cooperates with the stop tooth (161), and the stop tooth (161) allows the stop portion (142) to move forward along the guide loop (15) and prevents the stop portion (142) from moving backward along the guide loop (15).

8. The hemostatic forceps handle assembly according to claim 7, characterized in that: Among the multiple stop teeth (161), the tooth top height of the most distal stop tooth (161) is the largest.

9. The hemostatic forceps handle assembly according to claim 1, characterized in that: The transmission main shaft (13) moves to the third position, and the guide circuit (15) prevents the stop portion (142) from continuing to move distally.

10. A hemostatic forceps, characterized in that: A hemostatic forceps handle assembly as claimed in any one of claims 1 to 9.

Images