Trigger-driven separating type uterus forceps

Abstract

The invention relates to the technical field of medical equipment, in particular to trigger-driven separating type uterus forceps, and aims to solve the technical problems of reduction of response accuracy and increase of complexity caused by limitation of a two-hand operation mode in related technologies. The separating type uterus forceps driven by the trigger comprise a fixing clamp, operating forceps and a dragging rope. The fixing clamp comprises a first clamping arm, a second clamping arm and a clamping and locking mechanism. The operating clamp comprises a first clamp arm, a second clamp arm and a grip assembly. The first clamp arm and the second clamp arm are detachably connected with the first clamping arm and the second clamping arm respectively. The grip assembly is used for driving the clamping and locking mechanism to lock or unlock the clamping angle of the first clamping arm and the second clamping arm. The separating type uterus forceps driven by the trigger are provided with the grip assembly, the grip assembly is triggered once to drive the clamping and locking mechanism to lock or unlock the clamping angle of the first clamping arm and the second clamping arm, and clamping, locking, separating and other operations can be completed with one hand. The technical problems that the response accuracy is reduced and the complexity is increased due to the fact that existing separating type uterus forceps are limited by a two-hand operation mode are solved.

Description

Technical Field

[0001] The present invention and the technical field of medical equipment particularly relate to a trigger-driven detachable uterine forceps. Background Art

[0002] During gynecological surgery, when the doctor uses a uterine grasping forceps to fix the position of the uterus, its handle and connecting rod will block the surgical field of view, affecting the doctor's direct observation of the surgical area. The existing detachable uterine forceps avoids blocking the field of view of subsequent surgical steps by providing a detachably connected fixing clamp and operating forceps, and separating the operating forceps after the fixing clamp bites the uterine tissue and locks it. However, the existing detachable uterine forceps switches the working state of the detachable uterine forceps by directly pushing the slider with a pull ring. Since the doctor needs to control the clamping of the forceps with one hand and pull the pull ring with the other hand to drive the slider, this two-handed operation mode limits the rapid response and accuracy of the operation, and also increases the complexity of the operation, affecting the doctor's work efficiency and surgical results.

[0003] Existing separate uterine forceps have technical problems of reduced response accuracy and increased complexity due to being limited to a two-handed operation mode. Summary of the invention

[0004] The object of the present invention is to provide a trigger-driven separate uterine forceps to solve the technical problems in the related art that the response accuracy is reduced and the complexity is increased due to the limitation of the two-handed operation mode.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] The trigger-driven detachable uterine forceps provided by the present invention comprises:

[0001] A fixing clamp, an operating clamp and a towing rope, wherein the fixing clamp comprises a hinged first clamp arm, a second clamp arm and a clamp locking mechanism. The operating clamp comprises a hinged first clamp arm, a second clamp arm and a handle assembly. The first clamp arm and the second clamp arm are detachably connected to the first clamp arm and the second clamp arm, respectively, and are used to control the clamping angle of the first clamp arm and the second clamp arm. The handle assembly is installed on the second clamp arm, and is used to drive the clamp locking mechanism to lock or unlock the clamping angle of the first clamp arm and the second clamp arm. One end of the towing rope is connected to the fixing clamp. Specifically, the clamping and locking mechanism includes a positioning block and a locking block respectively installed on the first clamping arm and the second clamping arm, and a sliding bolt slidably connected to the second clamping arm. The positioning block and the locking block are provided with a plurality of mutually engaging serrations on the fitting surfaces, which are used to lock the clamping angles of the first clamping arm and the second clamping arm. The sliding bolt is provided with a transmission inclined surface, and the transmission inclined surface abuts against the locking block. The handle assembly is used to drive the sliding bolt to slide along its own axis to apply a thrust to the locking block through the transmission inclined surface, thereby driving the locking block to disengage from the positioning block and thereby switching the fixing clamp from the clamping state to the unlocking state. In the clamping state, the clamping angles of the first clamping arm and the second clamping arm are locked by the positioning block and the locking block. In the unlocking state, the first clamping arm and the second clamping arm can rotate freely.

[0002] Specifically, the trigger-driven separate uterine forceps also includes a switching control mechanism, which includes a sliding handle and a bidirectional pushing assembly. The sliding handle is slidably connected to the second clamp arm and is detachably connected to the sliding bolt, and is used to drive the fixed clamp to switch states. The bidirectional pushing assembly is installed at one end of the sliding handle away from the clamping locking mechanism, and applies a thrust to the sliding handle through the elastic force of a spring to drive the sliding handle to slide along the second clamp arm so that the operating clamp switches between a first posture and a second posture, thereby driving the fixed clamp to switch states. In the first posture, the fixed clamp is in a clamped state. In the second posture, the fixed clamp is in an unlocked state.

[0003] Specifically, the bidirectional pushing assembly includes a bow block, a first spring, a second spring and a second connecting member connected to the sliding handle. The bow block is provided with a limiting groove, and the second connecting member is provided with a limiting block, and the limiting block slides in the limiting groove. The first spring and the second spring are respectively arranged on both sides of the limiting block and abut against the bow block. The first spring and the second spring are respectively arranged on both sides of the limiting block and abut against the bow block, and the first spring and the second spring are used to apply thrusts in opposite directions to the limiting block. The handle assembly is used to drive the bow block to slide along the second clamp arm to drive the first spring and the second spring to move along the second clamp arm, thereby driving the sliding handle to slide along the second clamp arm through the first spring and the second spring.

[0004] Specifically, the switching control mechanism further includes a slider locking assembly, the slider locking assembly includes a locking slider and a locking hook and a third spring respectively arranged at both ends of the locking slider, the locking slider is connected to the two-way pushing assembly and slidably connected to the second clamp arm. One end of the third spring is connected to the locking slider, and the other end is connected to the second clamp arm. The locking slider is provided with a guide groove, and the guide groove includes a first guide groove, a second guide groove, a third guide groove and a fourth guide groove connected end to end in sequence. One end of the locking hook is slidably connected to the guide groove, and the other end is rotatably connected to the second clamp arm. The junctions of the first guide groove, the second guide groove, the third guide groove and the fourth guide groove are all provided with steps, which only allow the locking hook to slide in the first guide groove, the second guide groove, the third guide groove and the fourth guide groove in sequence. The handle assembly is connected to the locking slider, and the thrust of the handle assembly on the locking slider is used to overcome the elastic force of the third spring to drive the locking slider to slide axially, thereby driving the locking hook to slide in the first guide groove, the second guide groove, the third guide groove and the fourth guide groove in sequence, thereby switching the slider locking assembly between a forward pressure state and a backward pull state. In the forward pressure state, the locking hook is clamped at the first clamping point, the distance between the locking slider and the sliding handle is shortened, and the force applied by the bidirectional pushing assembly to the sliding handle is manifested as an elastic force approaching the fixing clamp. In the backward pull state, the locking hook is clamped at the second clamping point, the distance between the locking slider and the sliding handle is extended, and the force applied by the bidirectional pushing assembly to the sliding handle is manifested as an elastic force away from the fixing clamp.

[0005] Specifically, the grip assembly includes a trigger, a first connecting member and a trigger spring. The first connecting member is mounted on the locking slider, the trigger is hinged to the second clamp arm, and the rotation of the trigger is used to apply a thrust to the first connecting member to switch the direction of the elastic force applied by the bidirectional pushing assembly to the sliding handle. The trigger spring is used to drive the trigger to reset.

[0006] Specifically, a sleeve ring is provided at one end of the sliding bolt away from the transmission inclined surface. The sliding handle includes a connecting rod and a plug cone, the connecting rod is slidably connected to the second clamp arm, and the plug cone is installed on the connecting rod and plugged into the sleeve ring. The sliding of the connecting rod along the second clamp arm is used to drive the sleeve ring through the plug cone to drive the sliding bolt to slide along its own axis direction, thereby controlling the fixing clamp to switch between the clamping state and the unlocking state.

[0007] Specifically, the clamping and locking mechanism further includes a reset spring, which is installed at one end of the clamping block away from the positioning block. The clamping block is slidably connected to the second clamping arm along the hinge axis direction of the first clamping arm and the second clamping arm. The two ends of the reset spring are respectively in contact with the clamping block and the second clamping arm, and are used to apply a thrust to the clamping block so that the clamping block is in contact with the positioning block.

[0008] Specifically, the fixing clamp further includes a torsion spring, which is arranged at a hinge point between the first clamping arm and the second clamping arm; the elastic force of the torsion spring is used to drive the first clamping arm and the second clamping arm to rotate in a direction in which the angle is enlarged.

[0009] Specifically, the hinge axis of the first clamp arm and the second clamp arm is parallel to the hinge axis of the first clamp arm and the second clamp arm. The first clamp arm and the second clamp arm are both provided with buckles, and the first clamp arm and the second clamp arm are both provided with grooves, and the buckles are used to be clamped in the grooves to achieve detachable connection. The buckles are all set to be cylinders parallel to the hinge axis of the first clamp arm and the second clamp arm. The groove corresponds to the shape of the buckle.

[0007] Based on the above technical solutions, the beneficial effects of the present invention are analyzed as follows:

[0008] The present invention provides a trigger-driven split uterine forceps, comprising:

[0010] A fixing clamp, an operating clamp and a towing rope, wherein the fixing clamp comprises a hinged first clamp arm, a second clamp arm and a clamp locking mechanism. The operating clamp comprises a hinged first clamp arm, a second clamp arm and a handle assembly. The first clamp arm and the second clamp arm are detachably connected to the first clamp arm and the second clamp arm, respectively, and are used to control the clamping angle of the first clamp arm and the second clamp arm. The handle assembly is installed on the second clamp arm, and is used to drive the clamp locking mechanism to lock or unlock the clamping angle of the first clamp arm and the second clamp arm. One end of the towing rope is connected to the fixing clamp.

[0009] In specific application, the head end of the towing rope is connected to the fixing clamp. After the fixing clamp is docked with the operating forceps, the fixing clamp is sent into the patient's abdominal cavity in a closed state of minimum size through the operating forceps. At this time, the end of the towing rope extends out of the abdominal cavity. After the fixing clamp is opened in the abdominal cavity, the angle between the first clamp arm and the second clamp arm is controlled by the clamping of the first clamp arm and the second clamp arm to bite the uterine tissue. The first clamp arm and the second clamp arm are locked at the current clamping angle by the state of the clamping locking mechanism driven by the handle assembly to lock the fixing clamp and the uterine tissue. The operating forceps are separated from the first clamp arm and the second clamp arm and pulled out of the abdominal cavity. The towing rope is used to lift the uterine tissue.

[0010] It can be seen that, compared with the prior art, the trigger-driven separate uterine forceps is provided with the grip assembly, and the gripping locking mechanism is driven to lock or unlock the gripping angles of the first clamping arm and the second clamping arm by a single trigger of the grip assembly, so that clamping, locking and separation operations can be completed with one hand. The technical problems of the existing separate uterine forceps, which are limited to the two-handed operation mode and lead to reduced response accuracy and increased complexity, are overcome. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 A schematic diagram of the overall structure of the detachable uterine forceps when the operating forceps provided by an embodiment of the present invention is in a first posture;

[0013] Figure 2 is a schematic diagram of the structure when the operating forceps is in a first posture;

[0014] Figure 3 is a schematic diagram of the structure when the operating forceps is in a second posture;

[0015] Figure 4 It is a schematic diagram of the structure of the plug-in cone when the operating forceps is in the first posture;

[0016] Figure 5 It is a schematic diagram of the structure of the plug-in cone when the operating forceps is in the second posture;

[0017] Figure 6 It is a structural schematic diagram of the bidirectional pushing assembly when the operating forceps is in a first posture;

[0018] Figure 7 It is a structural schematic diagram of the bidirectional pushing assembly when the operating forceps is in the second posture;

[0019] Figure 8 It is a structural schematic diagram of the slider locking assembly when the operating pliers is in a first posture;

[0020] Fig. 9 It is a structural schematic diagram of the slider locking assembly when the operating pliers is in the second posture;

[0021] Fig.10 for Figure 8 An enlarged schematic diagram of the structure at the middle guide groove;

[0022] Fig.11 for Fig. 9 An enlarged schematic diagram of the structure at the middle guide groove;

[0023] Fig.12 An enlarged diagram of the structure of the guide groove Figure 1 ;

[0024] Fig.13 An enlarged diagram of the structure of the guide groove Figure 2 ;

[0025] Fig.14 It is a schematic diagram of the cutaway structure of the grip assembly when the trigger is pulled;

[0026] Fig.15 It is a schematic diagram of the cutaway structure of the grip assembly when the trigger is reset;

[0027] Fig.16 The structure diagram of the fixed clip in the clamped state Figure 1 ;

[0028] Fig.17 The structure diagram of the fixed clip in the clamped state Figure 2 ;

[0029] Fig.18 The structure diagram of the fixed clip in the clamped state Figure 3 ;

[0030] Fig.19 The structure diagram of the fixed clip in the clamped state Figure 4 ;

[0031] Fig. 20 The cutaway structure is shown when the fixing clip is unlocked. Figure 1 ;

[0032] Fig.21 It is a schematic diagram of the cross-section structure when the fixing clamp is in a clamping state;

[0033] Fig. 22 The cutaway structure is shown when the fixing clip is unlocked. Figure 2 ;

[0034] Fig.23 The cutaway structure is shown when the fixing clip is unlocked. Figure 3 .

[0035] icon:

[0036] 100, fixing clamp; 110, first clamping arm; 103, arc groove; 102, groove; 120, second clamping arm; 130, clamping and locking mechanism; 131, positioning block; 1311, sawtooth; 132, engaging block; 133, sliding bolt; 1331, sleeve ring; 101, transmission inclined plane; 134, reset spring; 140, torsion spring; 150, fastening screw;

[0037] 200, operating pliers; 210, first pliers arm; 211, buckle; 220, second pliers arm; 230, grip assembly; 231, trigger; 232, first connecting member; 233, trigger spring; 240, main grip; 250, secondary grip;

[0038] 300. Tow rope.

[0039] 400, switching control mechanism; 410, sliding handle; 411, connecting rod; 412, plug-in cone; 420, two-way pushing assembly; 421, bow block; 401, limiting groove; 422, first spring; 423, second spring; 424, second connecting member; 4241, limiting block; 430, slider locking assembly; 431, locking slider; 402, first guide groove; 403, second guide groove; 404, third guide groove; 405, fourth guide groove; 432, locking hook; 433, third spring. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are sub-embodiments of the present invention, rather than the embodiments of the whole block. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0043] Existing separate uterine forceps have technical problems of reduced response accuracy and increased complexity due to being limited to a two-handed operation mode.

[0044] In view of this, the present invention provides a trigger-driven separate uterine forceps, comprising:

[0011] The fixing clamp 100, the operating clamp 200 and the towing rope 300, the fixing clamp 100 comprises a hinged first clamp arm 110 and a second clamp arm 120 and a clamp locking mechanism 130. The operating clamp 200 comprises a hinged first clamp arm 210, a second clamp arm 220 and a handle assembly 230. The first clamp arm 210 and the second clamp arm 220 are detachably connected to the first clamp arm 110 and the second clamp arm 120 respectively, and are used to control the clamping angle of the first clamp arm 110 and the second clamp arm 120. The handle assembly 230 is installed on the second clamp arm 220, and is used to drive the clamp locking mechanism 130 to lock or unlock the clamping angle of the first clamp arm 110 and the second clamp arm 120. One end of the towing rope 300 is connected to the fixing clamp 100.

[0045] In summary, the trigger-driven detachable uterine forceps provided by the present invention can achieve the following technical effects:

[0046] The trigger-driven separation type uterine forceps is provided with a grip assembly 230, and a single triggering of the grip assembly 230 drives the clamping locking mechanism 130 to lock or unlock the clamping angle of the first clamping arm 110 and the second clamping arm 120, so that clamping, locking and separation operations can be completed with one hand. The technical problems of the existing separation type uterine forceps, such as reduced response accuracy and increased complexity due to the limitation of the two-handed operation mode, are overcome.

[0047] The following combination Figures 1 to 23 The structure and shape of the trigger-driven separate uterine forceps provided in this embodiment are described in detail:

[0012] Regarding the structural composition of the clamping and locking mechanism 130, specifically:

[0013] The clamping and locking mechanism 130 includes a positioning block 131 and a clamping block 132 respectively mounted on the first clamping arm 110 and the second clamping arm 120, and a sliding bolt 133 slidably connected to the second clamping arm 120. The positioning block 131 and the clamping block 132 are provided with a plurality of mutually engaged saw teeth 1311 on the abutting surfaces, which are used to lock the clamping angle of the first clamping arm 110 and the second clamping arm 120. The sliding bolt 133 is provided with a transmission inclined surface 101, and the transmission inclined surface 101 abuts against the clamping block 132. The handle assembly 230 is used to drive the sliding bolt 133 to slide along its own axis to apply a thrust to the clamping block 132 through the transmission inclined surface 101, thereby driving the clamping block 132 to disengage from the positioning block 131 and thereby switching the fixing clamp 100 from the clamped state to the unlocked state.

[0014] In the solution of this embodiment, the sawtooth 1311 is also provided with a guide slope 104, which is used to prevent the first clamping arm 110 and the second clamping arm 120 from rotating in the direction of reducing the included angle. The sawtooth 1311 is provided as a one-way tooth structure similar to a ratchet. Since the clamping angle of the first clamping arm 110 and the second clamping arm 120 can only change in the direction of reducing the included angle, after the operating forceps 200 are separated from the fixing clamp 100, the fixing clamp 100 can still remain in the state of biting the uterine tissue.

[0015] In the scheme of this embodiment, the trigger-driven separate uterine forceps also includes a switching control mechanism 400, which includes a sliding handle 410 and a bidirectional pushing assembly 420. The sliding handle 410 is slidably connected to the second clamp arm 220 and is detachably connected to the sliding bolt 133, and is used to drive the fixed clamp 100 to switch states. The bidirectional pushing assembly 420 is installed at the end of the sliding handle 410 away from the sliding bolt 133, and applies a thrust to the sliding handle 410 through the elastic force of the spring to drive the sliding handle 410 to slide along the second clamp arm 220 so that the operating forceps 200 switch between the first posture and the second posture, thereby driving the fixed clamp 100 to switch states. In the first posture, the fixed clamp 100 is in a clamping state, and the clamping angles of the first clamping arm 110 and the second clamping arm 120 are locked by the clamping locking mechanism 130. In the second posture, the fixed clamp 100 is in an unlocked state, and the first clamping arm 110 and the second clamping arm 120 can rotate freely.

[0016] Regarding the structural composition of the bidirectional pushing assembly 420, specifically:

[0017] The bidirectional pushing assembly 420 includes a bow block 421, a first spring 422, a second spring 423 and a second connecting member 424 connected to the sliding handle 410. The bow block 421 is provided with a limiting groove 401, and the second connecting member 424 is provided with a limiting block 4241, and the limiting block 4241 slides in the limiting groove 401. The first spring 422 and the second spring 423 are respectively arranged on both sides of the limiting block 4241 and abut against the bow block 421. The first spring 422 and the second spring 423 are used to apply thrusts in opposite directions to the limiting block 4241, and the combined force applied by the first spring 422 and the second spring 423 to the limiting block 4241 is directed to the center position of the limiting groove 401. The grip assembly 230 is used to drive the bow block 421 to slide along the second clamp arm 220 to drive the first spring 422 and the second spring 423 to move along the second clamp arm 220, thereby driving the sliding handle 410 to slide along the second clamp arm 220 through the first spring 422 and the second spring 423. The first spring 422 and the second spring 423 are set to be springs of the same model.

[0018] How the force direction of the bidirectional pushing component 420 on the sliding handle 410 is switched is specifically:

[0019] The switching control mechanism 400 further includes a slider locking assembly 430, which includes a locking slider 431 and a locking hook 432 and a third spring 433 respectively disposed at both ends of the locking slider 431. The locking slider 431 is connected to the bidirectional pushing assembly 420 and is slidably connected to the second clamp arm 220. One end of the third spring 433 is connected to the locking slider 431, and the other end is connected to the second clamp arm 220. The locking slider 431 is provided with a guide groove, which includes a first guide groove 402, a second guide groove 403, a third guide groove 404 and a fourth guide groove 405 connected end to end in sequence. One end of the locking hook 432 is slidably connected to the guide groove, and the other end is rotatably connected to the second clamp arm 220. The joints of the first guide groove 402, the second guide groove 403, the third guide groove 404 and the fourth guide groove 405 are all provided with steps, which only allow the locking hook 432 to slide sequentially in the first guide groove 402, the second guide groove 403, the third guide groove 404 and the fourth guide groove 405. The grip assembly 230 is connected to the locking slider 431. The thrust of the grip assembly 230 on the locking slider 431 is used to overcome the elastic force of the third spring 433 to drive the locking slider 431 to slide axially, thereby driving the locking hook 432 to slide sequentially in the first guide groove 402, the second guide groove 403, the third guide groove 404 and the fourth guide groove 405, thereby switching the slider locking assembly 430 between the forward pressing state and the rearward pulling state. In the forward pressing state, the locking hook 432 is clamped at the first clamping point, the distance between the locking slider 431 and the sliding handle 410 is shortened, and the force applied by the bidirectional pushing assembly 420 to the sliding handle 410 is manifested as an elastic force close to the fixing clamp 100, and the sliding handle 410 pushes the sliding bolt 133 to slide at an adaptive distance under the elastic force. In the backward pulling state, the locking hook 432 is clamped at the second clamping point, the distance between the locking slider 431 and the sliding handle 410 is extended, and the force applied by the bidirectional pushing assembly 420 to the sliding handle 410 is manifested as an elastic force away from the fixing clamp 100, and the sliding handle 410 pulls the sliding bolt 133 to slide at an adaptive distance under the elastic force.

[0020] Regarding the structural composition of the grip assembly 230, specifically:

[0021] The grip assembly 230 includes a trigger 231, a first connecting member 232 and a trigger spring 233. The first connecting member 232 is mounted on the locking slider 431, and the trigger 231 is hinged to the second clamp arm 220. The rotation of the trigger 231 is used to apply a thrust to the first connecting member 232 to switch the direction of the elastic force applied by the bidirectional pushing assembly 420 to the sliding handle 410. The trigger spring 233 is used to drive the trigger 231 to reset.

[0022] In the scheme of this embodiment, the operating pliers 200 also includes a main handle 240 and a secondary handle 250. The main handle 240 is arranged at the end of the first pliers arm 210 away from the fixed clamp 100, and the secondary handle 250 is arranged at the end of the second pliers arm 220 away from the fixed clamp 100, so as to facilitate the application of force to the first pliers arm 210 and the second pliers arm 220.

[0001] Regarding how the sliding bolt 133 is connected to the sliding bolt 133, specifically:

[0023] The end of the sliding bolt 133 away from the transmission inclined surface 101 is provided with a sleeve ring 1331. The sliding handle 410 includes a connecting rod 411 and a plug cone 412. The connecting rod 411 is slidably connected to the second clamp arm 220, and the plug cone 412 is installed on the connecting rod 411 and plugged into the sleeve ring 1331. The sliding of the connecting rod 411 along the second clamp arm 220 is used to drive the sleeve ring 1331 through the plug cone 412 to drive the sliding bolt 133 to slide along its own axis direction, thereby controlling the fixing clamp 100 to switch between the clamping state and the unlocking state.

[0024] In the solution of this embodiment, the clamping and locking mechanism 130 further includes a return spring 134, which is installed at one end of the clamping block 132 away from the positioning block 131. The clamping block 132 is slidably connected to the second clamping arm 120 along the hinge axis direction of the first clamping arm 110 and the second clamping arm 120. Both ends of the return spring 134 abut against the clamping block 132 and the second clamping arm 120, respectively, for applying a thrust to the clamping block 132 so that the clamping block 132 abuts against the positioning block 131.

[0002] How the first clamping arm 110 and the second clamping arm 120 achieve angle expansion in the unlocked state is described in detail as follows:

[0025] The fixing clamp 100 also includes a torsion spring 140, which is arranged at the hinge point of the first clamping arm 110 and the second clamping arm 120; when the fixing clamp 100 is in the unlocked state, the elastic force of the torsion spring 140 is used to drive the first clamping arm 110 and the second clamping arm 120 to rotate in the direction of increasing the angle.

[0003] How does the fixing clamp 100 prevent the first clamping arm 110 and the second clamping arm 120 from excessively expanding the angle under the elastic force of the torsion spring 140? Specifically:

[0004] The fixing clamp 100 further includes a fastening screw 150. The first clamping arm 110 is provided with an arc groove 103, which is coaxial with the hinge axis of the first clamping arm 110 and the second clamping arm 120. The fastening screw 150 passes through the arc groove 103 and is threadedly connected to the second clamping arm 120. The arc groove 103 is used to limit the maximum angle between the first clamping arm 110 and the second clamping arm 120.

[0005] How the operating clamp 200 is docked with the fixing clamp 100 is described in detail as follows:

[0006] The hinge axis of the first clamp arm 210 and the second clamp arm 220 is parallel to the hinge axis of the first clamp arm 110 and the second clamp arm 120. The first clamp arm 210 and the second clamp arm 220 are both provided with a buckle 211, and the first clamp arm 110 and the second clamp arm 120 are both provided with a groove 102, and the buckle 211 is used to be clamped in the groove 102 to achieve a detachable connection. The buckle 211 is configured as a cylinder parallel to the hinge axis of the first clamp arm 110 and the second clamp arm 120. The groove 102 corresponds to the buckle 211 in shape. When the first clamp arm 110 and the second clamp arm 120 form any angle, the cylindrical wall surface of the buckle 211 can be clamped in the groove 102 to achieve a stable connection. When the second clamp arm 220 is connected to the second clamp arm 120 , the sliding movement of the sliding handle 410 relative to the second clamp arm 220 is equivalent to the movement of the sliding handle 410 relative to the second clamp arm 120 , thereby pulling the sliding bolt 133 .

[0048] In summary, the specific working process of the trigger-driven separate uterine forceps provided in this embodiment is as follows:

[0049] Take the example that the initial state of the fixing clamp 100 is the clamping state, the initial state of the operating clamp 200 is the first posture, and the initial state of the slider locking assembly 430 is the rearward pulling state.

[0050] After the first end of the towing rope 300 is connected to the fixing clamp 100 and the groove 102 of the fixing clamp 100 is connected to the buckle 211 of the operating forceps 200, the fixing clamp 100 is sent into the patient's abdominal cavity in a closed state with a minimum size through the operating forceps 200. At this time, the end of the towing rope 300 extends out of the abdominal cavity.

[0051] The trigger 231 is pulled to contact and push the first connecting member 232. The first connecting member 232 overcomes the elastic force of the third spring 433 and pushes the locking slider 431, thereby driving the locking hook 432 to slide along the guide groove and clamped at the first clamping point. The locking slider 431 and the arch block 421 move toward the direction close to the fixing clamp 100, and the distance between the locking slider 431 and the sliding handle 410 is shortened. The force applied by the two-way pushing assembly 420 to the sliding handle 410 is manifested as an elastic force close to the fixing clamp 100. The two-way pushing assembly 420 drives the connecting rod 411 to slide along the second clamp arm 220 through the elastic force, thereby driving the plug cone 412 to drive the sleeve ring 1331 and then drive the sliding bolt 133 to slide along its own axis direction to make the clamping block 132 disengage from the positioning block 131, and the fixing clamp 100 switches from the clamping state to the unlocking state.

[0052] The elastic force of the torsion spring 140 drives the first clamping arm 110 and the second clamping arm 120 to open in the abdominal cavity, and then the first clamping arm 210 and the second clamping arm 220 are clamped to control the angle between the first clamping arm 110 and the second clamping arm 120 to decrease so as to bite the uterine tissue.

[0053] The trigger 231 is pulled to contact and push the first connecting member 232. The first connecting member 232 overcomes the elastic force of the third spring 433 to push the locking slider 431, thereby driving the locking hook 432 to slide along the guide groove and clamped at the second clamping point. The locking slider 431 and the arch block 421 move away from the fixing clamp 100, and the distance between the locking slider 431 and the sliding handle 410 is extended. The force applied by the two-way pushing assembly 420 to the sliding handle 410 is manifested as an elastic force away from the fixing clamp 100. The two-way pushing assembly 420 drives the connecting rod 411 to slide along the second clamp arm 220 through the elastic force, thereby driving the plug cone 412 to drive the sleeve ring 1331 and then drive the sliding bolt 133 to slide along its own axis direction so that the clamping block 132 abuts against the positioning block 131 under the elastic force of the return spring 134, and the fixing clamp 100 switches from the unlocked state to the clamped state. At this time, the first clamping arm 110 and the second clamping arm 120 are locked at the current clamping angle to lock the fixing clip 100 with the uterine tissue.

[0054] The operating forceps 200 are separated from the first clamping arm 110 and the second clamping arm 120 and withdrawn from the abdominal cavity. Pulling the towing rope 300 outside the abdominal cavity can be used to pull up the uterine tissue.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for the block-by-block or full-block technical features therein. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A trigger-driven split uterine forceps, characterized in that: include: A fixing clamp (100), an operating clamp (200) and a towing rope (300), wherein the fixing clamp (100) comprises a hinged first clamping arm (110) and a second clamping arm (120) and a clamping locking mechanism (130); The operating pliers (200) comprises a hinged first pliers arm (210), a second pliers arm (220) and a grip assembly (230); The first clamp arm (210) and the second clamp arm (220) are detachably connected to the first clamp arm (110) and the second clamp arm (120) respectively, and are used to control the clamping angles of the first clamp arm (110) and the second clamp arm (120); The grip assembly (230) is mounted on the second clamp arm (220) and is used to drive the clamp locking mechanism (130) to lock or unlock the clamping angle of the first clamping arm (110) and the second clamping arm (120); One end of the towing rope (300) is connected to the fixing clamp (100).

2. The trigger-driven split uterine forceps according to claim 1, characterized in that: The clamping and locking mechanism (130) comprises a positioning block (131) and a locking block (132) respectively mounted on the first clamping arm (110) and the second clamping arm (120), and a sliding bolt (133) slidably connected to the second clamping arm (120); The positioning block (131) and the locking block (132) are provided with a plurality of mutually engaging saw teeth (1311) on the fitting surfaces, which are used to lock the clamping angle of the first clamping arm (110) and the second clamping arm (120); The sliding bolt (133) is provided with a transmission inclined surface (101), and the transmission inclined surface (101) abuts against the engaging block (132); The handle assembly (230) is used to drive the sliding bolt (133) to slide along its own axis so as to apply a thrust to the engaging block (132) through the transmission inclined surface (101), thereby driving the engaging block (132) to disengage from the positioning block (131) and thereby switching the fixing clamp (100) from a clamped state to an unlocked state; In the clamping state, the clamping angles of the first clamping arm (110) and the second clamping arm (120) are locked by the positioning block (131) and the locking block (132); In the unlocked state, the first clamping arm (110) and the second clamping arm (120) can rotate freely.

3. The trigger-driven split uterine forceps according to claim 2, characterized in that: It also includes a switching control mechanism (400), wherein the switching control mechanism (400) includes a sliding handle (410) and a bidirectional pushing component (420); The sliding handle (410) is slidably connected to the second clamp arm (220) and is detachably connected to the sliding bolt (133), and is used to drive the fixing clamp (100) to switch states; The bidirectional pushing assembly (420) is installed at one end of the sliding handle (410) away from the sliding bolt (133), and applies a pushing force to the sliding handle (410) through the elastic force of a spring to drive the sliding handle (410) to slide along the second clamp arm (220) so that the operating clamp (200) switches between the first posture and the second posture, thereby driving the fixing clamp (100) to switch the state; In the first posture, the fixing clamp (100) is in a clamped state; In the second posture, the fixing clip (100) is in an unlocked state.

4. The trigger-driven split uterine forceps according to claim 3, characterized in that: The bidirectional pushing assembly (420) comprises a bow block (421), a first spring (422), a second spring (423) and a second connecting member (424) connected to the sliding handle (410); The arch block (421) is provided with a limiting groove (401), and the second connecting member (424) is provided with a limiting block (4241), and the limiting block (4241) slides in the limiting groove (401); The first spring (422) and the second spring (423) are respectively arranged on both sides of the limit block (4241) and abut against the bow block (421), and the first spring (422) and the second spring (423) are used to apply thrusts in opposite directions to the limit block (4241); The handle assembly (230) is used to drive the bow block (421) to slide along the second clamp arm (220) to drive the first spring (422) and the second spring (423) to move along the second clamp arm (220), thereby driving the sliding handle (410) to slide along the second clamp arm (220) through the elastic force of the first spring (422) and the second spring (423).

5. The trigger-driven split uterine forceps according to claim 4, characterized in that: The switching control mechanism (400) further comprises a slider locking assembly (430), wherein the slider locking assembly (430) comprises a locking slider (431) and locking hooks (432) and a third spring (433) respectively arranged at two ends of the locking slider (431), wherein the locking slider (431) is connected to the bidirectional pushing assembly (420) and is slidably connected to the second clamp arm (220); One end of the third spring (433) is connected to the locking slider (431), and the other end is connected to the second clamp arm (220); The locking slide block (431) is provided with a guide groove, and the guide groove comprises a first guide groove (402), a second guide groove (403), a third guide groove (404) and a fourth guide groove (405) which are sequentially connected end to end; One end of the locking hook (432) is slidably connected to the guide groove, and the other end is rotationally connected to the second clamp arm (220); The connecting parts of the first guide groove (402), the second guide groove (403), the third guide groove (404) and the fourth guide groove (405) are all provided with steps, so that only the locking hook (432) is allowed to slide in the first guide groove (402), the second guide groove (403), the third guide groove (404) and the fourth guide groove (405) in sequence; The handle assembly (230) is connected to the locking slider (431), and the thrust of the handle assembly (230) on the locking slider (431) is used to overcome the elastic force of the third spring (433) to drive the locking slider (431) to slide axially, thereby driving the locking hook (432) to slide in the first guide groove (402), the second guide groove (403), the third guide groove (404) and the fourth guide groove (405) in sequence, thereby switching the slider locking assembly (430) between a forward pressing state and a rearward pulling state; In the forward pressing state, the locking hook (432) is clamped at the first clamping point, the distance between the locking slider (431) and the sliding handle (410) is shortened, and the force applied by the bidirectional pushing component (420) to the sliding handle (410) is manifested as an elastic force close to the fixing clamp (100); In the rear-pulling state, the locking hook (432) is engaged with the second engaging point, the distance between the locking slider (431) and the sliding handle (410) is extended, and the force applied by the bidirectional pushing assembly (420) to the sliding handle (410) is manifested as an elastic force away from the fixing clamp (100).

6. The trigger-driven split uterine forceps according to claim 5, characterized in that: The grip assembly (230) comprises a trigger (231), a first connecting member (232) and a trigger spring (233); The first connecting member (232) is mounted on the locking slider (431), the trigger (231) is hinged to the second clamp arm (220), and the rotation of the trigger (231) is used to apply a thrust to the first connecting member (232) to switch the direction of the elastic force applied by the bidirectional pushing assembly (420) to the sliding handle (410); The trigger spring (233) is used to drive the trigger (231) to reset.

7. The trigger-driven split uterine forceps according to claim 6, characterized in that: A sleeve ring (1331) is provided at one end of the sliding bolt (133) away from the transmission inclined surface (101); The sliding handle (410) comprises a connecting rod (411) and an inserting cone (412), wherein the connecting rod (411) is slidably connected to the second clamp arm (220), and the inserting cone (412) is installed on the connecting rod (411) and inserted into the sleeve ring (1331); The sliding movement of the connecting rod (411) along the second clamp arm (220) is used to drive the sleeve ring (1331) through the plug cone (412), thereby driving the sliding bolt (133) to slide along its own axial direction and thereby controlling the fixing clamp (100) to switch between a clamped state and an unlocked state.

8. The trigger-driven split uterine forceps according to claim 2, characterized in that: The clamping and locking mechanism (130) further comprises a return spring (134), wherein the return spring (134) is mounted on an end of the locking block (132) away from the positioning block (131); The engaging block (132) is slidably connected to the second clamping arm (120) along the hinge axis direction of the first clamping arm (110) and the second clamping arm (120); Two ends of the return spring (134) respectively abut against the engaging block (132) and the second clamping arm (120), and are used to apply a thrust to the engaging block (132) so that the engaging block (132) abuts against the positioning block (131).

9. The trigger-driven split uterine forceps according to claim 1, characterized in that: The fixing clamp (100) further comprises a torsion spring (140), wherein the torsion spring (140) is arranged at a hinge point between the first clamping arm (110) and the second clamping arm (120); the elastic force of the torsion spring (140) is used to drive the first clamping arm (110) and the second clamping arm (120) to rotate in a direction in which the angle is enlarged.

10. The trigger-driven split uterine forceps according to claim 1, characterized in that: The hinge axis of the first clamp arm (210) and the second clamp arm (220) is parallel to the hinge axis of the first clamp arm (110) and the second clamp arm (120); The first clamp arm (210) and the second clamp arm (220) are both provided with a buckle (211), the first clamp arm (110) and the second clamp arm (120) are both provided with a groove (102), and the buckle (211) is used to be clamped in the groove (102) to achieve a detachable connection; The buckles (211) are all configured as cylinders parallel to the hinge axis of the first clamping arm (110) and the second clamping arm (120); The groove (102) corresponds in shape to the buckle (211).

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