Separating type traction forceps

Abstract

The utility model relates to the technical field of medical instruments, in particular to a pair of separating type traction forceps, and aims to solve the technical problems that the tissue injury risk is increased, the operation time is prolonged and the traction part cannot be flexibly adjusted due to the fact that a puncture suture penetrates through tissues in the prior art. The pair of separating type traction pliers comprises a clamping assembly, a grab handle assembly and a traction rope. The clamping assembly comprises a first clamping jaw, a second clamping jaw and a clamping mechanism, the grab handle assembly comprises a main plier body, an auxiliary plier body and a sliding mechanism, and the main plier body and the auxiliary plier body are hinged through the sliding mechanism. The main plier body and the auxiliary plier body are detachably connected with the first clamping jaw and the second clamping jaw respectively. The sliding mechanism is used for driving the clamping mechanism to lock or unlock the clamping angles of the first clamping jaw and the second clamping jaw. The separating type traction forceps are provided with the clamping assembly and the grab handle assembly which are detachably connected, the clamping assembly which locks the clamping angle after being separated is meshed on the abdominal cavity tissue, and rapid and firm butt joint with the abdominal cavity tissue is achieved. The technical problems that the tissue damage risk is increased, the operation time is prolonged and the traction part cannot be flexibly adjusted due to the fact that a puncture suture penetrates through the tissue in an existing tissue traction mode of the laparoscopic operation are solved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a detachable traction clamp. Background Technology

[0002] In laparoscopic surgery, traction of abdominal tissues is necessary to obtain a clear surgical field and sufficient operating space. Currently, the specific method for achieving traction involves placing a figure-eight suture around the desired area of ​​abdominal tissue, and then controlling the position of the abdominal tissue by pulling on the free end of the suture to expose the surgical field. However, this method is time-consuming, and once the suture is embedded in the tissue, excessive pressure on the soft tissue during traction can lead to tissue tearing, increasing the risk of tissue damage and prolonging the operation time. Furthermore, the inflexible adjustment of the position of the sutured tissue increases the inconvenience and difficulty of the surgical procedure.

[0003] Existing laparoscopic surgical methods for traction tissue have technical problems such as increased risk of tissue damage due to suture penetration, prolonged operation time, and inability to flexibly adjust the traction site. Utility Model Content

[0004] The purpose of this invention is to provide a detachable traction clamp to solve the technical problems in related technologies, such as increased risk of tissue damage, prolonged operation time, and inability to flexibly adjust the traction position due to the insertion of sutures through the tissue.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] The detachable traction clamp provided by this utility model includes:

[0007] The system includes a clamping assembly, a handle assembly, and a traction rope. The clamping assembly comprises a hinged first jaw, a second jaw, and a locking mechanism. The locking mechanism locks the clamping angles of the first and second jaws. One end of the traction rope is connected to the clamping assembly. The handle assembly includes a main jaw, a secondary jaw, and a sliding mechanism. The sliding mechanism is mounted on the main jaw, and the secondary jaw is rotatably connected to the sliding mechanism. The main jaw and the secondary jaw are detachably connected to the first and second jaws, respectively, and are used to control the clamping angles of the first and second jaws. The sliding mechanism moves the secondary jaw closer to or further away from the main jaw along the rotation axis, causing the locking mechanism to lock or unlock the clamping angles of the first and second jaws.

[0008] Specifically, the locking mechanism includes a first locking plate and a second locking plate. The first locking plate and the second locking plate have the same structure. The first locking plate includes locking blocks and elastic insertion plates, with the two elastic insertion plates respectively inserted into the first gripper and the second gripper. The two locking blocks have multiple interlocking ratchet teeth on their contact surfaces to lock the clamping angle of the first gripper and the second gripper. The sliding mechanism applies a pushing force to the locking blocks to disengage the first locking plate from the second locking plate, thereby switching the clamping assembly from a clamped state to an unlocked state. At this time, the elastic insertion plate undergoes elastic bending. In the clamped state, the clamping angle of the first gripper and the second gripper is locked by the first locking plate and the second locking plate. In the unlocked state, the first gripper and the second gripper can rotate freely.

[0009] Specifically, the locking block has a mating groove, and both the main clamp and the auxiliary clamp are provided with buckles. The buckles engage with the mating groove to achieve a detachable connection. Taking the hinge axis direction of the first jaw and the second jaw as the first direction, the sliding mechanism is used to drive the main clamp and the auxiliary clamp to move in opposite directions along the first direction, so that the two buckles move in opposite directions along the first direction, thereby applying a pushing force to the locking block through the mating groove, thereby driving the first clamping plate and the second clamping plate to disengage, and the clamping assembly switches from the clamping state to the unlocked state.

[0010] Specifically, the sliding mechanism includes a sliding frame and a sliding sleeve. The sliding frame is mounted on the main clamp body, and the sliding frame has a slide rail extending along the first direction. The sliding sleeve is slidably mounted on the slide rail. The secondary clamp body is hinged to the sliding sleeve. The sliding of the sliding sleeve along the slide rail is used to move the secondary clamp body closer to or away from the main clamp body, thereby causing the two latches to move towards or away from each other along the first direction.

[0011] Specifically, the sliding mechanism further includes a threaded knob, which is rotatably connected to the sliding frame and threaded to the sliding sleeve. The rotation of the threaded knob around its own axis is used to drive the sliding sleeve to slide along the slide rail.

[0012] Specifically, in the clamped state, the ratchet teeth of the first and second clamping plates engage together. The ratchet teeth are also provided with guide ramps to allow the first and second clamping jaws to rotate in the direction of decreasing angle, while restricting the first and second clamping jaws from rotating in the direction of increasing angle.

[0013] Specifically, it also includes a straightening component, which comprises a connector, a straightening block, and a sliding shaft. The straightening block has a limiting groove, and the clamping component engages with the limiting groove to prevent the clamping component from deflecting under the unbalanced forces of the two latches. The connector is installed on the secondary clamp body and disposed within the limiting groove. The sliding shaft is installed on the straightening block and inserted into the connector along the first direction to allow the straightening block to slide along the first direction. During state switching, the straightening block slides along the first direction and remains relatively stationary with respect to the clamping component. The engagement of the clamping component with the limiting groove keeps the hinge axes of the first and second jaws parallel to the hinge axes of the secondary clamp body and the sliding sleeve.

[0014] Specifically, the straightening assembly further includes a straightening spring, which is installed in the limiting groove and sleeved on the sliding shaft. When the main clamp and the auxiliary clamp move in opposite directions, the straightening spring is compressed. The straightening spring is used to drive the straightening block to slide along the first direction and abut against the connecting member.

[0015] Specifically, the clamping assembly further includes a torsion spring disposed at the hinge point of the first and second grippers. The spring force is used to drive the first and second grippers to rotate in the direction of increasing the included angle.

[0016] Specifically, the clamping assembly further includes a fastening screw. The first jaw has a groove, and the fastening screw is threaded to the second jaw and inserted into the groove. When the first jaw and the second jaw rotate relative to each other, the fastening screw slides along the groove.

[0017] Based on the above technical solutions, the beneficial effects of this utility model are analyzed as follows:

[0018] This utility model provides a detachable traction clamp, comprising:

[0019] The system includes a clamping assembly, a handle assembly, and a traction rope. The clamping assembly comprises a hinged first jaw, a second jaw, and a locking mechanism. The locking mechanism locks the clamping angles of the first and second jaws. One end of the traction rope is connected to the clamping assembly. The handle assembly includes a main jaw, a secondary jaw, and a sliding mechanism. The sliding mechanism is mounted on the main jaw, and the secondary jaw is rotatably connected to the sliding mechanism. The main jaw and the secondary jaw are detachably connected to the first and second jaws, respectively, and are used to control the clamping angles of the first and second jaws. The sliding mechanism moves the secondary jaw closer to or further away from the main jaw along the rotation axis, causing the locking mechanism to lock or unlock the clamping angles of the first and second jaws.

[0020] In practical application, the traction rope is connected to the clamping assembly, and the handle assembly is aligned with the clamping assembly. The clamping assembly, in its smallest closed state, is then inserted into the patient's abdominal cavity via the laparoscopic puncture cannula. Once the clamping assembly opens within the abdominal cavity, the angle between the first and second jaws is controlled by the clamping of the main and auxiliary clamping bodies, thereby engaging the abdominal tissue. The sliding mechanism drives the locking mechanism to switch states, locking the first and second jaws at the current clamping angle to secure the clamping assembly to the abdominal tissue. The handle assembly is then separated from the first and second jaws, and the laparoscopic puncture cannula is withdrawn from the abdominal cavity. The traction rope is used to lift the clamped abdominal tissue.

[0021] As can be seen, compared with existing technologies, this detachable traction forceps is equipped with a detachably connected clamping assembly and a handle assembly. After separation, the clamping assembly, with its clamping angle locked, engages with the abdominal tissue, achieving rapid and secure attachment. The clamping position can be flexibly adjusted by unlocking and relocking. This overcomes the technical problems of existing laparoscopic surgical tissue traction methods, such as increased risk of tissue damage due to suture penetration, prolonged surgical time, and the inability to flexibly adjust the traction site. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the split-type traction clamp in the closed state, as provided in an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the overall structure of the detachable traction clamp when it is in the unlocked and deployed state.

[0025] Figure 3 This is a schematic diagram of the clamping assembly when it is closed in the clamping state;

[0026] Figure 4 This is a schematic diagram of the clamping assembly when it is unfolded in the clamped state.

[0027] Figure 5 This is a cross-sectional diagram of the clamping assembly when it is unfolded in the clamped state.

[0028] Figure 6 This is a cross-sectional view of the locking mechanism when it is closed in the clamping state.

[0029] Figure 7 This is a cross-sectional schematic diagram of the locking mechanism when it is in the unlocked state and closed.

[0030] Figure 8 This is a schematic diagram of the structure when the straightening component is closed in the clamped state. Figure 1 ;

[0031] Figure 9 A schematic diagram of the structure when the straightening component is in the unlocked state and closed;

[0032] Figure 10 Schematic diagram of the straightening component in the clamped state Figure 2 ;

[0033] Figure 11 This is a schematic diagram of the sliding mechanism when it is closed in the clamped state;

[0034] Figure 12 This is a schematic diagram of the sliding mechanism when it is in the unlocked state and closed.

[0035] Figure 13 This is a cross-sectional schematic diagram of the sliding mechanism when it is in the unlocked state and closed.

[0036] icon:

[0037] 100. Clamping assembly; 110. First gripper; 103. Slide groove; 120. Second gripper; 130. Engaging mechanism; 131. First locking plate; 1311. Engaging block; 101. Ratchet; 1011. Guide ramp; 102. Connecting groove; 1312. Elastic insertion plate; 132. Second locking plate; 140. Torsion spring; 150. Fastening screw;

[0038] 200. Handle assembly; 210. Main clamp body; 201. Snap-lock; 203. Z-shaped bend; 220. Secondary clamp body; 230. Sliding mechanism; 231. Sliding frame; 202. Slide rail; 232. Sliding sleeve; 233. Threaded knob;

[0039] 300. Towing rope;

[0040] 400, straightening component; 410, connector; 420, straightening block; 401, limiting groove; 4011, straightening front; 430, sliding shaft; 440, straightening spring. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0042] 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 claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0043] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0044] Existing laparoscopic surgical methods for traction tissue have technical problems such as increased risk of tissue damage due to suture penetration, prolonged operation time, and inability to flexibly adjust the traction site.

[0045] In view of this, the present invention provides a detachable traction clamp, comprising:

[0046] The system comprises a clamping assembly 100, a grip assembly 200, and a traction rope 300. The clamping assembly 100 includes a hinged first gripper 110, a second gripper 120, and a locking mechanism 130. The locking mechanism 130 locks the clamping angle of the first gripper 110 and the second gripper 120. One end of the traction rope 300 is connected to the clamping assembly 100. The grip assembly 200 includes a main clamping body 210, a secondary clamping body 220, and a sliding mechanism 230. The sliding mechanism 230 is mounted on the main clamping body 210, and the secondary clamping body 220 is rotatably connected to the sliding mechanism 230. The main clamping body 210 and the secondary clamping body 220 are detachably connected to the first gripper 110 and the second gripper 120, respectively, and are used to control the clamping angle of the first gripper 110 and the second gripper 120. The sliding mechanism 230 is used to drive the secondary clamp 220 to move closer to or further away from the main clamp 210 along the rotation axis so that the locking mechanism 130 locks or unlocks the clamping angle of the first jaw 110 and the second jaw 120.

[0047] In summary, the detachable traction clamp provided by this utility model can achieve the following technical effects:

[0048] This detachable traction forceps features a detachable clamping assembly 100 and a handle assembly 200. After separation, the clamping assembly 100, with its clamping angle locked, engages with the abdominal tissue, achieving rapid and secure attachment. The clamping position can be flexibly adjusted by unlocking and relocking. This overcomes the technical problems of existing laparoscopic tissue traction methods, such as increased risk of tissue damage due to suture penetration, prolonged operation time, and inability to flexibly adjust the traction site.

[0049] The following combination Figures 1 to 13 The structure and shape of the detachable traction clamp provided in this embodiment are described in detail below:

[0050] Regarding how the locking mechanism 130 locks or unlocks the clamping angles of the first gripper 110 and the second gripper 120, specifically:

[0051] The locking mechanism 130 includes a first locking plate 131 and a second locking plate 132. The first locking plate 131 and the second locking plate 132 have the same structure. The first locking plate 131 includes a locking block 1311 and an elastic insertion plate 1312. The two elastic insertion plates 1312 are respectively inserted into the first gripper 110 and the second gripper 120. The two locking blocks 1311 are provided with a plurality of interlocking ratchet teeth 101 on the contact surface for locking the clamping angle of the first gripper 110 and the second gripper 120. The sliding mechanism 230 is used to apply a pushing force to the locking block 1311 to disengage the first locking plate 131 from the second locking plate 132, thereby switching the clamping assembly 100 from the clamping state to the unlocked state. At this time, the elastic insertion plate 1312 undergoes elastic bending. In the clamping state, the clamping angle of the first gripper 110 and the second gripper 120 is locked by the first locking plate 131 and the second locking plate 132. In the unlocked state, the first gripper 110 and the second gripper 120 can rotate freely.

[0052] In this embodiment, in the clamping state, the ratchet teeth 101 of the first clamping plate 131 and the second clamping plate 132 are engaged together. The ratchet teeth 101 are also provided with guide ramps 1011 to allow the first gripper 110 and the second gripper 120 to rotate in the direction of decreasing angle, while restricting the first gripper 110 and the second gripper 120 from rotating in the direction of increasing angle. Since the clamping angle of the first gripper 110 and the second gripper 120 can only change in the direction of decreasing angle, after the handle assembly 200 is separated from the clamping assembly 100, the clamping assembly 100 can still maintain the state of clamping the abdominal tissue.

[0053] Specifically, regarding how the sliding mechanism 230 controls the state switching of the engaging mechanism 130:

[0054] The locking block 1311 has a docking groove 102. Both the main clamp body 210 and the auxiliary clamp body 220 are equipped with latches 201, which engage with the docking groove 102 for a detachable connection. With the hinge axis of the first jaw 110 and the second jaw 120 as the first direction, the sliding mechanism 230 drives the main clamp body 210 and the auxiliary clamp body 220 to move in opposite directions along the first direction, causing the two latches 201 to move in opposite directions as well. This applies a pushing force to the locking block 1311 through the docking groove 102, thereby causing the first clamping plate 131 and the second clamping plate 132 to disengage, and the clamping assembly 100 switches from the clamping state to the unlocked state. Both the docking groove 102 and the latches 201 are provided with guide angles to increase docking stability.

[0055] Regarding the structural composition of the sliding mechanism 230, specifically:

[0056] The sliding mechanism 230 includes a sliding frame 231 and a sliding sleeve 232. The sliding frame 231 is mounted on the main clamp body 210 and has a slide rail 202 extending along a first direction. The sliding sleeve 232 is slidably mounted on the slide rail 202. The secondary clamp body 220 is hinged to the sliding sleeve 232. The sliding of the sliding sleeve 232 along the slide rail 202 is used to drive the secondary clamp body 220 to move closer to or away from the main clamp body 210, thereby driving the two latches 201 to move towards or away from each other along the first direction, and thus driving the clamping assembly 100 to switch between a clamping state and an unlocked state.

[0057] Regarding how the sliding of the sleeve 232 within the slide rail 202 is controlled, specifically:

[0058] In this embodiment, the sliding mechanism 230 further includes a threaded knob 233, which is rotatably connected to the sliding frame 231 and threadedly connected to the sliding sleeve 232. The rotation of the threaded knob 233 around its own axis is used to drive the sliding sleeve 232 to slide along the slide rail 202, thereby driving the secondary clamp body 220 to move closer to or away from the main clamp body 210 so that the two latches 201 move towards or away from each other in the first direction, thereby driving the clamping assembly 100 to switch between the clamping state and the unlocking state.

[0059] Regarding how the clamping assembly 100 avoids deflection under the unbalanced force of the latch 201, specifically:

[0060] The split-type traction clamp also includes a straightening assembly 400, which includes a connector 410, a straightening block 420, and a sliding shaft 430. The straightening block 420 has a limiting groove 401, and the clamping assembly 100 is engaged with the limiting groove 401. That is, two straightening faces 4011 are formed at both ends of the limiting groove 401, which clamp the clamping assembly 100 at both ends along a first direction, to prevent the clamping assembly 100 from deflecting under the unbalanced force of the two latches 201. The connector 410 is installed on the secondary clamp body 220 and disposed in the limiting groove 401. The sliding shaft 430 is installed on the straightening block 420 and inserted into the connector 410 along the first direction so that the straightening block 420 can slide along the first direction. During state switching, the straightening block 420 slides along the first direction and remains relatively stationary with respect to the clamping assembly 100. The clamping action of the straightening face 4011 keeps the hinge axes of the first gripper 110 and the second gripper 120 parallel to the hinge axis of the secondary clamping body 220 and the sliding sleeve 232. Since the hinge axes of the first gripper 110 and the second gripper 120 are always parallel to the hinge axis of the secondary clamping body 220 and the sliding sleeve 232 and will not deflect, the movement of the secondary clamping body 220 towards or away from the main clamping body 210 along the first direction affects the engaging mechanism 130 by causing the first clamping plate 131 and the second clamping plate 132 to engage or disengage, thereby causing the clamping assembly 100 to switch between the clamping state and the unlocked state. The straightening face 4011 is provided with a guide angle to guide the straightening block 420 to clamp onto the clamping assembly 100.

[0061] Specifically, regarding how the centering block 420 achieves the reset:

[0062] The straightening assembly 400 also includes a straightening spring 440, which is installed in the limiting groove 401 and sleeved on the sliding shaft 430. When the main clamp body 210 and the auxiliary clamp body 220 move in opposite directions, the straightening spring 440 is compressed. The straightening spring 440 is used to drive the straightening block 420 to slide along the first direction and abut against the connector 410 to achieve reset. Therefore, when the handle assembly 200 mates with the clamping assembly 100, the buckle 201 engages with the mating groove 102, and the clamping assembly 100 also engages with the limiting groove 401.

[0063] Regarding how the first gripper 110 and the second gripper 120 achieve angle expansion in the unlocked state, specifically:

[0064] In this embodiment, the clamping assembly 100 further includes a torsion spring 140, which is disposed at the hinge point of the first gripper 110 and the second gripper 120. The elastic force of the torsion spring 140 is used to drive the first gripper 110 and the second gripper 120 to rotate in the direction of increasing included angle.

[0065] Regarding how the clamping assembly 100 prevents the angle between the first gripper 110 and the second gripper 120 from expanding excessively under the force of the torsion spring 140, specifically:

[0066] The clamping assembly 100 also includes a fastening screw 150. The first gripper 110 has a groove 103, and the fastening screw 150 is threaded to the second gripper 120 and inserted into the groove 103. When the first gripper 110 and the second gripper 120 rotate relative to each other, the fastening screw 150 slides along the groove 103. The groove 103 limits the maximum included angle between the first gripper 110 and the second gripper 120.

[0067] To avoid the opening and closing angles of the main clamp 210 and the auxiliary clamp 220 being limited by the diameter of the laparoscopic puncture cannula, in this embodiment, both the main clamp 210 and the auxiliary clamp 220 are provided with a Z-shaped bend 203. The Z-shaped bend 203 provides clearance for the orifice of the laparoscopic puncture cannula, thereby increasing the maximum opening and closing angles of the main clamp 210 and the auxiliary clamp 220. The minimum distance between the middle section of the Z-shaped bend 203 and the rotation axis of the auxiliary clamp 220 is greater than the length of the laparoscopic puncture cannula.

[0068] In summary, the specific working process of the detachable traction clamp provided in this embodiment is as follows:

[0069] Taking the initial state of the clamping component 100 as the clamping state as an example.

[0070] After connecting the first end of the traction rope 300 to the clamping assembly 100 and aligning the docking groove 102 of the clamping assembly 100 with the buckle 201 of the handle assembly 200, the laparoscopic puncture cannula is inserted into the patient's abdominal cavity through the handle assembly 200 in a closed state with the clamping assembly 100 at its smallest size.

[0071] Rotating the threaded knob 233 causes the sliding sleeve 232 to slide, causing the sliding sleeve 232 to move the secondary clamp body 220 away from the main clamp body 210, thereby causing the two latches 201 engaged in the mating groove 102 to move in opposite directions along the first direction. At this time, the straightening block 420 slides along the first direction and remains relatively stationary with the clamping assembly 100. Through the clamping action of the straightening face 4011, the hinge axis of the first jaw 110 and the second jaw 120 remains parallel to the hinge axis of the secondary clamp body 220 and the sliding sleeve 232. The two latches 201 move in opposite directions along the first direction to apply a pushing force to the engaging block 1311, thereby causing the first clamping plate 131 and the second clamping plate 132 to disengage. The clamping assembly 100 switches from the clamping state to the unlocked state. At this time, the elastic insertion plate 1312 undergoes elastic bending.

[0072] The elastic force of the torsion spring 140 causes the first clamp 110 and the second clamp 120 to open in the abdominal cavity. Then, the clamping of the main clamp body 210 and the auxiliary clamp body 220 controls the angle between the first clamp 110 and the second clamp 120 to decrease, thereby biting the abdominal tissue.

[0073] Rotating the threaded knob 233 causes the sliding sleeve 232 to slide, causing the sliding sleeve 232 to move the secondary clamp body 220 closer to the main clamp body 210, thereby causing the two latches 201 engaged in the docking groove 102 to move towards each other in the first direction. At this time, the straightening block 420 slides in the first direction and remains relatively stationary with respect to the clamping assembly 100. Through the clamping action of the straightening face 4011, the hinge axes of the first jaw 110 and the second jaw 120 remain parallel to the hinge axes of the secondary clamp body 220 and the sliding sleeve 232. The two latches 201 move towards each other in the first direction to apply a pushing force to the engaging block 1311. At the same time, the elastic insertion plate 1312 elastically bends and returns to its original position, thereby causing the first clamping plate 131 and the second clamping plate 132 to engage together, and the clamping assembly 100 switches from the unlocked state to the clamping state. The clamping angle of the first jaw 110 and the second jaw 120 is locked at the current angle to lock the clamping assembly 100 with the abdominal tissue.

[0074] The handle assembly 200 is separated from the first gripper 110 and the second gripper 120 and withdrawn from the abdominal cavity through a laparoscopic puncture cannula.

[0075] Pull the free end of the traction rope 300 to apply directional traction to the clamped abdominal tissue.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A split draw forceps characterized by, include: Clamping assembly (100), handle assembly (200), and traction rope (300); The clamping assembly (100) includes a hinged first jaw (110), a second jaw (120), and a locking mechanism (130); The locking mechanism (130) is used to lock the clamping angle of the first jaw (110) and the second jaw (120); One end of the traction rope (300) is connected to the clamping assembly (100); The grip assembly (200) includes a main clamp body (210), a secondary clamp body (220), and a sliding mechanism (230). The sliding mechanism (230) is mounted on the main clamp body (210), and the secondary clamp body (220) is rotatably connected to the sliding mechanism (230). The main clamp body (210) and the auxiliary clamp body (220) are detachably connected to the first gripper (110) and the second gripper (120) respectively, and are used to control the clamping angle of the first gripper (110) and the second gripper (120); The sliding mechanism (230) is used to drive the secondary clamp (220) to move closer to or further away from the main clamp (210) along the rotation axis so that the locking mechanism (130) locks or unlocks the clamping angle of the first jaw (110) and the second jaw (120).

2. The detachable traction clamp according to claim 1, characterized in that: The locking mechanism (130) includes a first locking plate (131) and a second locking plate (132). The first locking plate (131) and the second locking plate (132) have the same structure. The first locking plate (131) includes a locking block (1311) and an elastic plug-in plate (1312). The two elastic plug-in plates (1312) are respectively plugged into the first gripper (110) and the second gripper (120). The two locking blocks (1311) are provided with a plurality of interlocking ratchet teeth (101) on the mating surface, which are used to lock the clamping angle of the first jaw (110) and the second jaw (120); The sliding mechanism (230) is used to apply a pushing force to the locking block (1311) to drive the first locking plate (131) to disengage from the second locking plate (132), thereby switching the clamping assembly (100) from the clamping state to the unlocked state; At this time, the elastic plug plate (1312) undergoes elastic bending; In the clamped state, the clamping angles of the first jaw (110) and the second jaw (120) are locked by the first clamping plate (131) and the second clamping plate (132); In the unlocked state, the first gripper (110) and the second gripper (120) can rotate freely.

3. The detachable traction clamp according to claim 2, characterized in that: The locking block (1311) has a docking groove (102), and both the main clamp body (210) and the auxiliary clamp body (220) are provided with buckles (201). The buckles (201) are engaged with the docking groove (102) to achieve a detachable connection. With the hinge axis of the first gripper (110) and the second gripper (120) as the first direction, the sliding mechanism (230) is used to drive the main clamp body (210) and the auxiliary clamp body (220) to move in opposite directions along the first direction, so that the two latches (201) move in opposite directions along the first direction, thereby applying a pushing force to the locking block (1311) through the docking groove (102), thereby driving the first locking plate (131) and the second locking plate (132) to disengage, and the clamping assembly (100) switches from the clamping state to the unlocking state.

4. The detachable traction clamp according to claim 3, characterized in that: The sliding mechanism (230) includes a sliding frame (231) and a sliding sleeve (232). The sliding frame (231) is mounted on the main clamp body (210). The sliding frame (231) has a slide rail (202) extending along the first direction. The sliding sleeve (232) is slidably mounted on the slide rail (202). The secondary clamp (220) is hinged to the sliding sleeve (232). The sliding sleeve (232) along the slide rail (202) is used to drive the secondary clamp (220) to move closer to or away from the main clamp (210), thereby driving the two latches (201) to move towards or away from each other in the first direction.

5. The detachable traction clamp according to claim 4, characterized in that: The sliding mechanism (230) further includes a threaded knob (233), which is rotatably connected to the sliding frame (231) and threadedly connected to the sliding sleeve (232). The rotation of the threaded knob (233) around its own axis is used to drive the sliding sleeve (232) to slide along the slide rail (202).

6. The detachable traction clamp according to claim 2, characterized in that: In the clamped state, the ratchet teeth (101) of the first clamping plate (131) and the second clamping plate (132) are engaged together; The ratchet (101) is also provided with a guide ramp (1011) to allow the first jaw (110) and the second jaw (120) to rotate in the direction of decreasing angle, while restricting the first jaw (110) and the second jaw (120) from rotating in the direction of increasing angle.

7. The detachable traction clamp according to claim 4, characterized in that: It also includes a straightening component (400), which includes a connector (410), a straightening block (420) and a sliding shaft (430). The straightening block (420) has a limiting groove (401), and the clamping component (100) is engaged with the limiting groove (401) to prevent the clamping component (100) from deflecting under the action of the two buckles (201). The connector (410) is installed on the secondary clamp body (220) and disposed in the limiting groove (401); The sliding shaft (430) is mounted on the straightening block (420) and inserted into the connector (410) along the first direction so that the straightening block (420) can slide along the first direction; During state switching, the straightening block (420) slides along the first direction and remains relatively stationary with respect to the clamping assembly (100). The engagement of the clamping assembly (100) with the limiting groove (401) keeps the hinge axis of the first jaw (110) and the second jaw (120) parallel to the hinge axis of the sub-clamp body (220) and the sliding sleeve (232).

8. The detachable traction clamp according to claim 7, characterized in that: The straightening assembly (400) further includes a straightening spring (440), which is installed in the limiting groove (401) and sleeved on the sliding shaft (430); When the main clamp (210) and the secondary clamp (220) move in opposite directions, the straightening spring (440) is compressed; The straightening spring (440) is used to drive the straightening block (420) to slide along the first direction and abut against the connector (410).

9. The detachable traction clamp according to claim 1, characterized in that: The clamping assembly (100) further includes a torsion spring (140), which is disposed at the hinge point of the first gripper (110) and the second gripper (120); The elastic force of the torsion spring (140) is used to drive the first gripper (110) and the second gripper (120) to rotate in the direction of increasing the included angle.

10. The detachable traction clamp according to claim 1, characterized in that: The clamping assembly (100) further includes a fastening screw (150), the first jaw (110) has a groove (103), and the fastening screw (150) is threaded to the second jaw (120) and inserted into the groove (103); When the first gripper (110) and the second gripper (120) rotate relative to each other, the fastening screw (150) slides along the groove (103).

Images