Haemostatic forceps handle assembly with wrench and haemostatic forceps

Abstract

The utility model provides a haemostatic forceps handle part assembly with a wrench and haemostatic forceps, the handle part assembly comprises a shell, the wrench and a transmission main shaft, the wrench is rotatably connected to the shell, and the transmission main shaft is slidably connected to the shell; a guide arm is arranged between the transmission main shaft and the shell, the guide arm is provided with a linkage part and a guide part which are arranged in a staggered manner, and a groove-shaped guide loop is arranged on the shell; the linkage part is rotationally connected to the transmission main shaft and is in linkage with the transmission main shaft in the far-near direction, and the guide part extends into the groove of the guide loop. The linkage part is connected with the transmission main shaft through a pre-deformed guide reset piece, so that the linkage part and the transmission main shaft are in elastic sliding connection in the direction in which the transmission main shaft points to the guide loop; the linkage part moves along with one working stroke of the transmission main shaft to drive the guide part to advance along the guide loop and move around the guide loop by a circle, and the guide reset piece always exerts an elastic effect on the guide arm so that the guide part can abut against the groove bottom of the groove. The guide arm is high in structural strength.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a hemostatic forceps handle component with a wrench and the 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] In order to facilitate the use of hemostatic forceps, a guide circuit is usually provided on the housing. When the user holds the wrench and rotates it, the transmission main shaft cooperates with the guide circuit through the guide arm, and the guide circuit controls the wrench stroke from the mechanical structure, such as the one-way stop control of the wrench during the clamp delivery process, the positioning control of the wrench at the position where the clamp delivery is completed, etc. However, the guide arm currently used has a large longitudinal dimension and is required to be made of elastic material, which results in an increase in the volume of the hemostatic forceps handle assembly and a low structural strength of the guide arm itself.

[0006] For this reason, there is an urgent need for an improved hemostatic forceps handle assembly and hemostatic forceps. 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 object of the present invention is to provide a hemostatic forceps handle assembly with a wrench, wherein the guide arm has a high structural strength.

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

[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 a first aspect, the utility model provides a hemostatic forceps handle assembly with a wrench, comprising a housing, a wrench and a transmission spindle, wherein the wrench is rotatably connected to the housing, and the transmission spindle is slidably connected to the housing;

[0013] A guide arm is arranged between the transmission main shaft and the housing, and the guide arm has a linkage part and a guide part which are arranged in a staggered manner, and a groove-shaped guide loop is arranged on the housing; the linkage part is rotatably connected to the transmission main shaft and is arranged in linkage with the transmission main shaft in the far and near direction, and the guide part extends into the groove of the guide loop; the linkage part is connected to the transmission main shaft through a pre-deformed guide reset member, so that the linkage part and the transmission main shaft form an elastically slidable connection in the direction in which the transmission main shaft points to the guide loop;

[0014] The linkage part moves with the transmission main shaft through a working stroke, driving the guide part to move forward along the guide loop and move around the guide loop for one circle. During this process, the guide reset member always applies elastic force to the guide arm to make the guide part abut against the bottom of the groove.

[0015] Optionally, the wrench rotates to an initial position, a clamp delivery completion position, a firing intermediate position and a firing completion position which are arranged in sequence, and the transmission spindle moves to a first position, a second position, a third position and a fourth position which are arranged in sequence from near to far in response to the actuation of the wrench; the working stroke is that the transmission spindle moves from the first position to the second position, the third position, the second position, the fourth position and the first position in sequence; during the working stroke, the transmission spindle moves to the third position, the guide circuit prevents the guide arm from continuing to move distally, and the transmission spindle moves to the second position for the second time, and the guide circuit prevents the guide arm from continuing to move proximally.

[0016] Optionally, a stop tooth segment is provided on the guide loop; during the working stroke, when the transmission main shaft moves to the second position for the first time, the guide part cooperates with the stop tooth segment to allow the guide part to move forward along the guide loop and prevent the guide part from moving backward along the guide loop.

[0017] Optionally, the guide circuit includes a first passage, a second passage, a third passage and a fourth passage connected in sequence, the proximal end of the first passage is connected with the proximal end of the fourth passage to form a first connection point, the distal end of the first passage and the distal end of the fourth passage are separated from each other to form a second V-shaped opening, the second passage and the third passage are both located in the second V-shaped opening, the distal end of the second passage is connected with the distal end of the first passage to form a second connection point, the proximal end of the second passage is connected with the proximal end of the third passage to form a third connection point, and the distal end of the third passage is connected with the distal end of the fourth passage to form a fourth connection point; the transmission main shaft is located at the first position, the guide part is located at the starting point, and the starting point is at the proximal end of the first passage and is located proximal to the first connection point;

[0018] During the working stroke, the transmission main shaft moves from the first position to the third position, driving the guide part to move along the first passage to the second connecting point, the transmission main shaft moves from the third position to the second position, driving the guide part to move along the second passage to the third connecting point, the transmission main shaft moves from the second position to the fourth position, driving the guide part to move along the third passage to the fourth connecting point, the transmission main shaft moves from the fourth position to the first position, driving the guide part to move along the fourth passage through the first connecting point and return to the starting point.

[0019] Optionally, during the working stroke, when the transmission main shaft moves from the first position to the second position for the first time, it drives the guide part to move from the starting point to the clamping point along the first passage; the stop tooth segment is arranged on the first passage and extends along the first passage, and the distal end of the stop tooth segment is located at the clamping point.

[0020] Optionally, the guide arm includes a linkage portion, a connection portion and a guide portion which are sequentially connected in the far and near direction, the linkage portion extends out of the connection portion toward the transmission main shaft, and the guide portion extends out of the connection portion toward the guide loop.

[0021] Optionally, the linkage part and the guide part are both columnar, the connecting part is plate-shaped, the linkage part is arranged at the first end of the connecting part and extends from the first end of the connecting part to the transmission main shaft, and the guide part is arranged at the second end of the connecting part and extends from the second end of the connecting part to the guide circuit.

[0022] Optionally, the linkage portion of the guide arm is connected to the left side portion of the transmission main shaft, and the guide circuit is arranged on the left inner wall of the shell.

[0023] In the second aspect, the utility model provides a hemostatic forceps, including an axis assembly, a clamp and the hemostatic forceps handle assembly as described above; the axis assembly extends distally from the hemostatic forceps handle assembly and defines a longitudinal axis, a plurality of hemostatic clamps are arranged in the axis assembly, the clamp is installed at the distal end of the axis assembly, and a transmission spindle is transmission-connected to the axis assembly; the transmission spindle can move longitudinally in response to the actuation of a wrench, driving the axis assembly to sequentially complete the clamp delivery and firing actions.

[0024] Optionally, the transmission spindle moves to a third position, and the clamp can pass through the trocar.

[0025] (III) Beneficial effects

[0026] The beneficial effects of the utility model are:

[0027] The hemostatic forceps provided by the utility model provide elastic action for the guide arm through the guide resetting member, so that the guide part always abuts against the bottom of the groove of the guide loop, which is beneficial to the cooperation between the guide part and the guide loop; there is no need for the guide arm itself to be made of elastic material, and a guide arm made of rigid material can be selected, which improves the structural strength of the guide arm and can reduce the longitudinal size of the guide arm, thereby reducing the volume of the hemostatic forceps handle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The utility model is described with the help of the following drawings:

[0029] Figure 1 Schematic diagram of the internal structure of the clip applier according to a specific embodiment of the utility model, wherein the wrench is in the initial position and the transmission main shaft is in the first position;

[0030] Figure 2 for Figure 1 Schematic diagram of the coordination between the middle guide arm and the guide circuit on the handle body;

[0031] Figure 3 It is a schematic diagram of the cooperation between the guide arm and the guide circuit on the handle body according to a specific embodiment of the utility model, which respectively shows the position of the guide arm when the transmission main shaft moves from the first position to the second position, the third position, the second position and the fourth position in sequence;

[0032] Figure 4 It is a top view schematic diagram of a guide arm according to a specific embodiment of the utility model;

[0033] Figure 5 It is a side view of a guide arm according to a specific embodiment of the present utility model.

[0034] [Description of Reference Numerals]

[0035] 11: housing; 12: wrench; 13: transmission spindle; 14: guide arm; 15: guide circuit;

[0036] 141: linkage part; 142: guide part;

[0037] 150: stop tooth segment; 151: first passage; 152: second passage; 153: third passage; 154: fourth passage; 155: first stop portion; 156: second stop portion; 157: first guide surface; 158: second guide surface; 159: third guide surface; 160: fourth guide surface;

[0038] 2: shaft assembly;

[0039] 3: Clamp. DETAILED DESCRIPTION

[0040] 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.

[0041] like Figures 1 to 4 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.

[0042] 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.

[0043] 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.

[0044] 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 .

[0045] A guide arm 14 is provided between the transmission main shaft 13 and the housing 11. The guide arm 14 has a linkage portion 141 and a guide portion 142 which are arranged in a staggered manner. A groove-shaped guide loop 15 is provided on the housing 11. The linkage portion 141 is rotatably 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 guide portion 142 extends into the groove of the guide loop 15. The linkage portion 141 is connected to the transmission main shaft 13 through a pre-deformed guide reset member, so that the linkage portion 141 and the transmission main shaft 13 form an elastically slidable connection in the direction in which the transmission main shaft 13 points to the guide loop 15. The linkage portion 141 follows the movement of a working stroke of the transmission main shaft 13, driving the guide portion 142 to move forward along the guide loop 15 and move around the guide loop 15 for one circle. In this process, the guide reset member always applies elastic action to the guide arm 14 to make the guide portion 142 abut against the bottom of the groove.

[0046] The hemostatic forceps configured in this way provide elasticity for the guide arm 14 through the guide resetting member, so that the guide portion 142 always abuts against the bottom of the groove of the guide loop 15, which is beneficial to the cooperation between the guide portion 142 and the guide loop 15; there is no need for the guide arm 14 itself to be made of elastic material, and the guide arm 14 of rigid material can be selected, which improves the structural strength of the guide arm 14 and can reduce the longitudinal dimension of the guide arm 4, thereby reducing the volume of the hemostatic forceps handle assembly.

[0047] like Figure 3As shown, the wrench 12 can rotate among the initial position, the clamp delivery completion position, the firing middle position and the firing completion position which are arranged in sequence, and the transmission spindle 13 can move among the first position, the second position, the third position and the fourth position which are arranged in sequence from near to far along the longitudinal axis. The gripping wrench 12 rotates from the initial position to the clamp delivery completion position, and the transmission spindle 13 moves from the first position to the second position in response to the actuation of the wrench 12, the spindle reset part undergoes elastic deformation, and the transmission spindle 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 middle position, and the transmission spindle 13 moves from the second position to the third position in response to the actuation of the wrench 12, the spindle reset part continues to undergo elastic deformation, and the transmission spindle 13 drives the shaft assembly 2 to half-close the clamp. Clamp 3 (at this time, the hemostatic clamp in clamp 3 is in a semi-closed state. After clamp 3 is opened, the hemostatic clamp in clamp 3 will also open due to its own elastic restoring force); the gripping wrench 12 rotates from the clamp delivery completion position to the firing completion position, and the transmission main shaft 13 moves from the second position to the fourth position in response to the actuation of the wrench 12. The main shaft reset part undergoes elastic deformation, and the transmission main shaft 13 drives the shaft assembly 2 to fully close the clamp 3 (at this time, the hemostatic clamp in clamp 3 is in a fully closed state, achieving blood vessel clamping). Release the wrench 12, the reset part of the wrench 12 undergoes elastic recovery to drive the wrench 12 to automatically return from the firing completion position to the initial position, and at the same time, the main shaft reset part undergoes elastic recovery to drive the transmission main shaft 13 to automatically return from the fourth position to the first position, and the shaft assembly 2 returns to the initial state.

[0048] Preferably, the working stroke is that the transmission main shaft 13 moves from the first position to the second position, the third position, the second position, the fourth position and the first position in sequence; during the working stroke, the transmission main shaft 13 moves to the third position, the guide circuit 15 prevents the guide arm 14 from continuing to move distally, and the transmission main shaft 13 moves to the second position for the second time, and the guide circuit 15 prevents the guide arm 14 from continuing to move proximally.

[0049] Specifically, in this embodiment, the guide loop 15 has a unique forward path, that is, the linkage part 141 follows the movement of the transmission main shaft 13 in a working stroke, driving the guide part 142 to always move forward along the guide loop 15 in a unique clockwise rotation direction (i.e., clockwise or counterclockwise).

[0050] The hemostatic forceps thus configured are used for user operation, and the working principle is as follows: first, the user starts to rotate the wrench 12 from the initial position, driving the transmission spindle 13 to move distally from the first position, and the linkage portion 141 follows the movement of the transmission spindle 13 to drive the guide portion 142 to move forward along the guide loop 15. When the wrench 12 rotates to drive the transmission spindle 13 to move to the third position, the guide loop 15 prevents the guide arm 14 from continuing to move distally, that is, the guide loop 15 prevents the transmission spindle 13 from continuing to move distally and prevents the wrench 12 from continuing to move distally. The lever 12 is then released and the guide arm 142 is moved forward along the guide loop 15, and the guide arm 142 is moved forward along the guide loop 15. When the guide arm 142 is moved to the second position (i.e., when the lever 12 is rotated to the position where the clamp delivery is completed), the guide loop 15 stops the guide arm 142 from moving forward and the guide arm 142 is moved forward and the guide loop 15 stops the guide arm 142 from moving ... The guide loop 15 stops the transmission spindle 13 from moving proximally and stops the wrench 12 from rotating. At this time, the wrench 12 can be stably stopped at the clamp delivery completion position, which is convenient for the user to find the blood vessel to be clamped and place the blood vessel to be clamped in the hemostatic clip of the clamp 3. After that, the user starts to rotate the wrench 12 from the clamp delivery completion position to drive the transmission spindle 13 to move distally from the second position. The linkage part 141 follows the movement of the transmission spindle 13 and drives the guide part 142 to continue to move forward along the guide loop 15 until the blood vessel 12 is clamped. When the transmission spindle 13 moves to the fourth position (i.e., the wrench 12 rotates to the firing completion position), the clamp 3 is closed; finally, the user releases the wrench 12, and the wrench 12 rotates from the firing completion position to the initial position. At the same time, the transmission spindle 13 moves proximally from the fourth position, and the linkage part 141 follows the movement of the transmission spindle 13 to drive the guide part 142 to continue to move along the guide loop 15. When the transmission spindle 13 moves to the first position (i.e., when the wrench 12 rotates to the initial position), the guide part 142 moves one circle along the guide loop 15.

[0051] The above-mentioned hemostatic forceps, through the cooperation of the transmission main shaft 13, the guide arm 14 and the guide loop 15, enables the hemostatic forceps to drive the shaft assembly 2 to realize the clamp delivery and firing action with a new working stroke of the transmission main shaft 13, which can effectively remind the user that the clamp delivery is completed on the one hand, and can stably stop the wrench 12 at the clamp delivery completion position on the other hand, so that the user can find the blood vessel to be clamped and place the blood vessel to be clamped in the hemostatic clamp of the clamp 3. The clamp delivery stroke of the wrench 12 and the firing stroke of the wrench 12 are clearly distinguished from the mechanical structure, and the guide loop controls the wrench stroke from the mechanical structure, reducing the operating requirements of the hemostatic forceps on the user and avoiding the occurrence of the situation where the clamp 3 is fired by mistake.

[0052] Further preferably, the guide loop 15 has a stop tooth segment 150; during the working stroke, when the transmission main shaft 13 moves to the second position for the first time, the guide portion 142 cooperates with the stop tooth segment 150 to allow the guide portion 142 to move forward along the guide loop 15 and prevent the guide portion 142 from retreating along the guide loop 15.

[0053] The hemostatic forceps configured in this way are used for user operation, and the working principle is as follows: the user rotates the wrench 12 from the initial position, driving the transmission spindle 13 to move distally from the first position, and the linkage part 141 follows the movement of the transmission spindle 13 to drive the guide part 142 to move forward along the guide loop 15. During the first movement of the transmission spindle 13 to the second position, the guide part 142 cooperates with the stop tooth segment 150, and the stop tooth segment 150 allows the guide part 142 to move forward along the guide loop 15, and the stop tooth segment 150 prevents the guide part 142 from retreating along the guide loop 15, so that the wrench 12 and the transmission spindle 13 cannot retreat during the clamp delivery process, which is beneficial to stable clamp delivery.

[0054] Furthermore, during the movement of the guide arm 14 following the transmission spindle 13 through a working stroke, the linkage portion 141 and the guide portion 142 are always arranged in sequence from near to far, or the linkage portion 141 and the guide portion 142 are always arranged in sequence from far to near. In this way, during the movement of the guide arm 14 following the transmission spindle 13 through a working stroke, it is beneficial to drive the guide portion 142 to move along the guide loop 15.

[0055] Specifically, in this embodiment, during the movement of the guide arm 14 following the transmission main shaft 13 during a working stroke, the linkage portion 141 and the guide portion 142 are always arranged in sequence from near to far.

[0056] Preferably, if Figure 2As shown, the guide circuit 15 is formed by a first passage 151, a second passage 152, a third passage 153 and a fourth passage 154 which are connected in sequence, the proximal end of the first passage 151 is connected with the proximal end of the fourth passage 154 to form a first connection point, the distal end of the first passage 151 and the distal end of the fourth passage 154 are away from each other to form a second V-shaped opening, the second passage 152 and the third passage 153 are both located in the second V-shaped opening, the distal end of the second passage 152 is connected with the distal end of the first passage 151 to form a second connection point, the proximal end of the second passage 152 is connected with the proximal end of the third passage 153 to form a third connection point, and the distal end of the third passage 153 is connected with the distal end of the fourth passage 154 to form a fourth connection point; the transmission main shaft 13 is located at the first position, and the guide portion 142 is located at the starting point, which is at the proximal end of the first passage 151 and on the proximal side of the first connection point. During the working stroke, the transmission main shaft 13 moves from the first position to the third position, driving the guide part 142 to move along the first passage 151 to the second connection point, the transmission main shaft 13 moves from the third position to the second position, driving the guide part 142 to move along the second passage 152 to the third connection point, the transmission main shaft 13 moves from the second position to the fourth position, driving the guide part 142 to move along the third passage 153 to the fourth connection point, the transmission main shaft 13 moves from the fourth position to the first position, driving the guide part 142 to move along the fourth passage 154 through the first connection point and back to the starting point. Providing such a shape of the guide loop 15 is conducive to the cooperation between the guide part 142 and the guide loop 15.

[0057] Furthermore, during the working stroke, when the transmission main shaft 13 moves from the first position to the second position for the first time, it drives the guide part 142 to move from the starting point to the clamping point along the first passage 151; the stop tooth segment 150 is arranged on the first passage 151 and extends along the first passage 151, and the distal end of the stop tooth segment 150 is located at the clamping point.

[0058] Specifically, in this embodiment, the stop tooth segment 150 includes a plurality of stop teeth connected in sequence from near to far, and each stop tooth includes a guide slope and a stop surface arranged in sequence from near to far; during the cooperation between the guide portion 142 and the stop tooth segment 150, the guide portion 142 can move distally along the guide slope to pass over the stop tooth, and after passing over the stop tooth, the guide portion 142 abuts against the stop surface to prevent the guide portion 142 from moving proximally. In this way, the stop tooth segment 150 allows the guide portion 142 to move forward along the guide loop 15 and prevents the guide portion 142 from retreating along the guide loop 15.

[0059] Preferably, if Figure 3As shown, a first stop portion 155 is provided at the second connection point, and when the transmission main shaft 13 moves to the third position, the first stop portion 155 abuts against the guide portion 142 to prevent the guide portion 142 from continuing to move distally; a second stop portion 156 is provided at the third connection point, and when the transmission main shaft 13 moves to the second position, the second stop portion 156 abuts against the guide portion 142 to prevent the guide portion 142 from continuing to move distally.

[0060] Preferably, the proximal end of the fourth passage 154 is provided with a first guide structure, the distal end of the first passage 151 is provided with a second guide structure, the proximal end of the second passage 152 is provided with a third guide structure, and the distal end of the third passage 153 is provided with a fourth guide structure; during the movement of the guide portion 142 along the guide loop 15, the first guide structure allows the guide portion 142 to enter the first passage 151 from the fourth passage 154, the first guide structure prevents the guide portion 142 from entering the fourth passage 154 from the first passage 151, and the second guide structure allows the guide portion 142 to enter the first passage 151 from the fourth passage 154. The first guide structure allows the guide part 142 to enter the second passage 152 from the first passage 151, the second guide structure prevents the guide part 142 from entering the first passage 151 from the second passage 152, the third guide structure allows the guide part 142 to enter the third passage 153 from the second passage 152, the third guide structure prevents the guide part 142 from entering the second passage 152 from the third passage 153, the fourth guide structure allows the guide part 142 to enter the fourth passage 154 from the third passage 153, and the fourth guide structure prevents the guide part 142 from entering the third passage 153 from the fourth passage 154. In this way, the guide part 142 can move in a unique direction at the intersection of the guide loop 15 (i.e., the first connection point, the second connection point, the third connection point, and the fourth connection point), ensuring that the guide part 142 always moves along the guide loop 15 in a unique clockwise direction (i.e., clockwise or counterclockwise).

[0061] In this embodiment, the first passage 151 is a first groove, the second passage 152 is a second groove, the third passage 153 is a third groove, and the fourth passage 154 is a fourth 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 first stopper 155; at the third connection point, the inner wall of the second groove is connected to the inner wall of the third groove through the second connecting wall, and the second connecting wall serves as a second stopper 156. 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 set in this way makes the guide loop 15 simple in structure and can realize the stop position of the wrench 12 at the firing middle position and the clamp delivery completion position.

[0062] In this embodiment, if Figure 2As shown, the first guiding structure includes a first guiding surface 157 and a first blocking surface which are arranged at the bottom of the fourth groove and arranged in sequence along the fourth passage 154, 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 157 is connected to the bottom of the fourth groove, and the second end of the first guiding surface 157 is connected to the second end of the first blocking surface; during the movement of the guide portion 142 along the guiding loop 15, the guide portion 142 can move along the first guiding surface 157 until it passes the first blocking surface and reaches the first connecting point to enter the first groove, at the first connecting point the guide portion 142 abuts against the first blocking surface, the first blocking surface prevents the guide portion 142 from entering the fourth groove, and allows the guide portion 142 to enter the first groove and move along the first groove.

[0063] The second guiding structure includes a second guiding surface 158 and a second blocking surface which are arranged at the bottom of the first groove and are 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 158 is connected to the bottom of the first groove, and the second end of the second guiding surface 158 is connected to the second end of the second blocking surface; during the movement of the guiding portion 142 along the guiding loop 15, the guiding portion 142 can move along the second guiding surface 158 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 guiding portion 142 abuts against the second blocking surface, and the second blocking surface prevents the guiding portion 142 from entering the first groove, and allows the guiding portion 142 to enter the second groove and move along the second groove.

[0064] The third guiding structure includes a third guiding surface 159 and a third blocking surface which are arranged at the bottom of the second groove and arranged in sequence from far to near, the first end of the third blocking surface is connected to the bottom of the second groove, the second end of the third blocking surface extends in a direction away from the bottom of the second groove, the first end of the third guiding surface 159 is connected to the bottom of the second groove, and the second end of the third guiding surface 159 is connected to the second end of the third blocking surface; during the movement of the guide portion 142 along the guiding loop 15, the guide portion 142 can move along the third guiding surface 159 until it crosses the third blocking surface and reaches the third connecting point to enter the third groove, at the third connecting point the guide portion 142 abuts against the third blocking surface, and the third blocking surface prevents the guide portion 142 from entering the second groove, allowing the guide portion 142 to enter the third groove and move along the third groove.

[0065] The fourth guiding structure includes a fourth guiding surface 160 and a fourth blocking surface which are arranged at the bottom of the third groove and arranged in sequence from near to far, the first end of the fourth blocking surface is connected to the bottom of the third groove, the second end of the fourth blocking surface extends in a direction away from the bottom of the third groove, the first end of the fourth guiding surface 160 is connected to the bottom of the third groove, and the second end of the fourth guiding surface 160 is connected to the second end of the fourth blocking surface; during the movement of the guide portion 142 along the guiding loop 15, the guide portion 142 can move along the fourth guiding surface 160 until it crosses the fourth blocking surface and reaches the fourth connecting point to enter the fourth groove, at the fourth connecting point the guide portion 142 abuts against the fourth blocking surface, the fourth blocking surface prevents the guide portion 142 from entering the third groove, and allows the guide portion 142 to enter the fourth groove and move along the fourth groove.

[0066] The first guiding structure, the second guiding structure, the third guiding structure and the fourth guiding structure arranged in this way have a simple structure.

[0067] Preferably, the first end of the first blocking surface is flush with the inner side wall of the first groove, the first end of the second blocking surface is flush with the inner side wall of the second groove, the first end of the third blocking surface is flush with the inner side wall of the third groove, and the first end of the fourth blocking surface is flush with the inner side wall of the fourth groove. In this way, the first blocking surface is arranged to facilitate the guide part 142 to move along the first groove, the second blocking surface is arranged to facilitate the guide part 142 to move along the second groove, the third blocking surface is arranged to facilitate the guide part 142 to move along the third groove, and the fourth blocking surface is arranged to facilitate the guide part 142 to move along the fourth groove.

[0068] Preferably, in this embodiment, the first blocking surface is vertically arranged with the bottom of the fourth groove, the second blocking surface is vertically arranged with the bottom of the first groove, the third blocking surface is vertically arranged with the bottom of the second groove, and the fourth blocking surface is vertically arranged with the bottom of the third groove. The blocking surface arranged in this way can effectively play a blocking role when the guide portion 142 abuts against the blocking surface.

[0069] In this embodiment, the clamping point is located between the first connection point and the second connection point, and preferably, the stop tooth segment 150 is disposed between the first connection point and the second connection point. In this way, the cooperation process between the guide portion 142 and the stop tooth segment 150 occurs between the first connection point and the second connection point, thereby preventing the guide portion 142 from being lifted up and entering the fourth groove through the first connection point due to the cooperation between the guide portion 142 and the stop tooth segment 150.

[0070] Preferably, if Figure 4 and Figure 5As shown, the guide arm 14 includes a linkage portion 141, a connection portion, and a guide portion 142 which are sequentially connected in the far and near direction, the linkage portion 141 extends out of the connection portion toward the transmission main shaft 13, and the guide portion 142 extends out of the connection portion toward the guide loop 15. The guide arm 14 of such a shape facilitates the connection between the connection portion and the transmission main shaft 13, and facilitates the cooperation between the guide portion 142 and the guide loop 15.

[0071] Specifically, in this embodiment, the linkage part 141 and the guide part 142 are both columnar, the connecting part is plate-shaped, the linkage part 141 is arranged at the first end part of the connecting part, and extends from the first end part of the connecting part to the transmission main shaft 13, and the guide part 142 is arranged at the second end part of the connecting part, and extends from the second end part of the connecting part to the guide loop 15.

[0072] Preferably, the transmission main shaft 13 moves to the third position, and the clamp 3 can pass through the trocar. In this way, the user can be effectively reminded that the clip delivery is completed, and the user can conveniently control the clamp 3 to be half closed in a state where the trocar can pass through.

[0073] Specifically, in this embodiment, the linkage part 141 of the guide arm 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 linkage part 141 of the guide arm 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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 with a wrench, characterized in that: It comprises a housing (11), a wrench (12) and a transmission main shaft (13), wherein the wrench (12) is rotatably connected to the housing (11), and the transmission main shaft (13) is slidably connected to the housing (11); A guide arm (14) is arranged between the transmission main shaft (13) and the housing (11), the guide arm (14) having a linkage portion (141) and a guide portion (142) which are arranged in a staggered manner, and a groove-shaped guide loop (15) is arranged on the housing (11); the linkage portion (141) is rotatably connected to the transmission main shaft (13) and is arranged in linkage with the transmission main shaft (13) in a distal direction, and the guide portion (142) extends into the groove of the guide loop (15); the linkage portion (141) is connected to the transmission main shaft (13) through a pre-deformed guide reset member, so that the linkage portion (141) and the transmission main shaft (13) form an elastically slidable connection in a direction in which the transmission main shaft (13) points to the guide loop (15); The linkage part (141) moves along a working stroke of the transmission main shaft (13), driving the guide part (142) to move forward along the guide loop (15) and move around the guide loop (15) for one circle. During this process, the guide reset member always applies elastic action to the guide arm (14) so ​​that the guide part (142) abuts against the bottom of the groove.

2. The hemostatic forceps handle assembly with a wrench according to claim 1, characterized in that: The wrench (12) rotates to an initial position, a clamp delivery completion position, a firing intermediate position and a firing completion position which are arranged in sequence, and the transmission main shaft (13) moves to a first position, a second position, a third position and a fourth position which are arranged in sequence from near to far in response to the actuation of the wrench (12); The working stroke is that the transmission main shaft (13) moves from the first position to the second position, the third position, the second position, the fourth position and the first position in sequence; during the working stroke, the transmission main shaft (13) moves to the third position, the guide circuit (15) prevents the guide arm (14) from continuing to move distally, the transmission main shaft (13) moves to the second position for the second time, and the guide circuit (15) prevents the guide arm (14) from continuing to move proximally.

3. The hemostatic forceps handle assembly with a wrench according to claim 2, characterized in that: The guide loop (15) is provided with a stop tooth segment (150); during the working stroke, when the transmission main shaft (13) moves to the second position for the first time, the guide portion (142) cooperates with the stop tooth segment (150) to allow the guide portion (142) to move forward along the guide loop (15) and prevent the guide portion (142) from moving backward along the guide loop (15).

4. The hemostatic forceps handle assembly with a wrench according to claim 2 or 3, characterized in that: The guide circuit (15) comprises a first passage (151), a second passage (152), a third passage (153) and a fourth passage (154) which are connected in sequence, the proximal end of the first passage (151) is connected with the proximal end of the fourth passage (154) to form a first connection point, the distal end of the first passage (151) and the distal end of the fourth passage (154) are separated from each other to form a second V-shaped opening, the second passage (152) and the third passage (153) are both located in the second V-shaped opening, the distal end of the second passage (152) is connected with the distal end of the first passage (151) to form a second connection point, the proximal end of the second passage (152) is connected with the proximal end of the third passage (153) to form a third connection point, and the distal end of the third passage (153) is connected with the distal end of the fourth passage (154) to form a fourth connection point; the transmission main shaft (13) is located at the first position, the guide 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 on the proximal side of the first connection point; During the working stroke, the transmission main shaft (13) moves from the first position to the third position, driving the guide part (142) to move along the first passage (151) to the second connecting point; the transmission main shaft (13) moves from the third position to the second position, driving the guide part (142) to move along the second passage (152) to the third connecting point; the transmission main shaft (13) moves from the second position to the fourth position, driving the guide part (142) to move along the third passage (153) to the fourth connecting point; the transmission main shaft (13) moves from the fourth position to the first position, driving the guide part (142) to move along the fourth passage (154) through the first connecting point and return to the starting point.

5. The hemostatic forceps handle assembly with a wrench according to claim 4, characterized in that: During the working stroke, when the transmission main shaft (13) moves from the first position to the second position for the first time, it drives the guide part (142) to move from the starting point to the clamping point along the first passage (151); The stop tooth segment (150) is arranged on the first passage (151) and extends along the first passage (151), and the distal end of the stop tooth segment (150) is located at the clamping point.

6. The hemostatic forceps handle assembly with a wrench according to claim 1, characterized in that: The guide arm (14) comprises a linkage part (141), a connection part and a guide part (142) which are sequentially connected in the far and near direction; the linkage part (141) extends out of the connection part toward the transmission main shaft (13), and the guide part (142) extends out of the connection part toward the guide loop (15).

7. The hemostatic forceps handle assembly with a wrench according to claim 6, characterized in that: The linkage part (141) and the guide part (142) are both columnar, the connection part is plate-shaped, the linkage part (141) is arranged at a first end of the connection part and extends from the first end of the connection part to the transmission main shaft (13), and the guide part (142) is arranged at a second end of the connection part and extends from the second end of the connection part to the guide circuit (15).

8. The hemostatic forceps handle assembly with a wrench according to claim 1, characterized in that: The linkage part (141) of the guide arm (14) is connected to the left side of the transmission main shaft (13), and the guide circuit (15) is arranged on the left inner wall of the housing (11).

9. A hemostatic forceps, characterized in that: It comprises a shaft assembly (2), a clamp (3) and a hemostatic forceps handle assembly as claimed in any one of claims 1 to 8; The shaft assembly (2) extends distally from the hemostatic forceps handle assembly and defines a longitudinal axis. A plurality of hemostatic clamps are arranged in the shaft assembly (2). The clamps (3) are mounted at the distal end of the shaft assembly (2). The transmission main shaft (13) is transmission-connected to the shaft assembly (2). The transmission main shaft (13) can move longitudinally in response to the actuation of the wrench (12), thereby driving the shaft assembly (2) to sequentially complete the clamp feeding and firing actions.

10. The hemostatic forceps according to claim 9, characterized in that: The transmission main shaft (13) moves to the third position, and the clamp (3) can pass through the trocar.

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