Blue pliers capable of being adjusted at multiple angles

Abstract

The blue forceps capable of being adjusted at multiple angles comprise a first holding part and a second holding part which are hinged to each other, a forceps rod part detachably connected with the first holding part and an occlusion part rotationally connected with the forceps rod part, and two groups of movable joints are formed by a first joint cotyle seat, a first joint ball head, a second joint cotyle seat and a second joint ball head; an adjusting and jacking assembly and an occlusion traction assembly are arranged in a sleeve of the forceps rod part, the adjusting and jacking assembly is connected with the occlusion part through a first joint socket and a first joint ball head, and rotation limiting and fixing of the occlusion part are achieved; and the occlusion traction assembly is matched with the second joint socket and the second joint ball head to realize rotation adjustment and traction action control on an occlusion knife of the occlusion part. By means of the two movable joints, multi-angle adjustment such as upward bending, downward bending, leftward bending, rightward bending, leftward oblique upward bending, leftward oblique downward bending, rightward oblique upward bending and rightward oblique downward bending of the occlusion part relative to the cannula can be achieved, operation of a doctor is facilitated, and the operation efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and in particular to a blue forceps for trimming the meniscus, which can be adjusted at multiple angles to facilitate the doctor's surgical operation. Background Art

[0002] On the tibial articular surface, there are medial and lateral semi-circular cartilages called menisci. The edge part is thicker and is tightly connected to the joint capsule, while the central part is thin and in a free state.

[0003] The structures of existing blue forceps for trimming the meniscus are diverse. The differences in the structures of various blue forceps basically lie in the shape of the forceps head. According to the shape of the forceps head, they can be divided into: straight forceps head, left-bent forceps head, left-bent 90° forceps head, right-bent forceps head, right-bent 90° forceps head, upward-bent forceps head, downward-bent forceps head, reverse-biting forceps head, etc. During the treatment process, it is usually necessary to trim the meniscus in multiple directions. However, the existing blue forceps are basically of a single fixed structure. Therefore, during the operation, the doctor usually needs to manually adjust the holding direction of the forceps. If the target trimming position and angle cannot be achieved after manually adjusting the holding direction, it is necessary to replace the blue forceps correspondingly and select a blue forceps with a forceps head shape that meets the requirements to continue the surgical operation. Therefore, the existing blue forceps cannot adjust the direction of the forceps head at multiple angles, which affects the surgical efficiency.

[0004] In order to solve the above technical problems, Chinese Utility Model Patent CN202121886742.0 discloses a meniscus blue forceps with a multi-angle adjustment structure, which is provided with an adjustment post. The adjustment post is connected to one side of the blue forceps body. One side of the adjustment post is connected with a rotating end, and a blue forceps rod body is fixed on one side of the rotating end. A steel wire connection belt is arranged inside the blue forceps rod body, and a biting head is arranged at the end of the steel wire connection belt. A fixing knob is arranged on the adjustment post. Although the technical solution disclosed in this document can rotate the blue forceps rod body and the biting head through the adjustment post to adjust the angle of the biting head, this adjustment method only allows the biting head to rotate around the central axis of the blue forceps rod body, which does not change the fact that it is a straight forceps head. In specific surgical operations, it cannot replace general left-bent forceps heads, upward-bent forceps heads, etc.

[0005] In addition, Chinese invention patent CN201910512552.3 discloses a universal blue forceps, which includes a handheld operation part, a connection adjustment part and a resection part. The resection part is connected to the handheld operation part through the connection adjustment part; the handheld operation part includes a mounting frame, a first connecting arm, a first grip ring, a connection seat, a second connecting arm, a second grip ring and a connecting piece. The first connecting arm is integrally arranged at one end of the mounting frame. The connection adjustment part includes a mounting tube, a connecting tube, a nut, an adjustment bolt, a limiting plate, a first disc and a steel wire. The resection part includes a cutter seat, a cutter, a fixed ear, a second disc, a convex block, a fixed seat, a first spring seat, a second spring seat and a spring. Although the technical solution disclosed in this patent document can rotate the mounting tube 360 degrees by loosening the adjustment bolt, expanding the operation range, however, the 360-degree rotation of the mounting tube is only rotated around its central axis, thereby driving the forceps head to rotate around the central axis of the mounting tube. It is still a straight forceps head and cannot replace general upwardly curved forceps heads, downwardly curved forceps heads, etc. in specific surgical operations.

[0006] Therefore, the angle adjustment range of the existing blue forceps is small. The forceps head basically rotates around the central axis of the blue forceps rod and can only achieve 360-degree rotation in a vertical plane, and cannot achieve bending actions such as upward bending, downward bending, left bending, and right bending of the forceps head. Therefore, it is necessary to propose a new technical solution to solve the problems existing in the prior art. Utility Model Content

[0007] This application provides a blue forceps capable of multi-angle adjustment to solve the problems of small angle adjustment range and inconvenient operation and use of the existing blue forceps.

[0008] To achieve the above object, this application provides the following technical solutions:

[0009] The present application provides a blue pliers capable of multi-angle adjustment, including a first holding part and a second holding part hinged to the first holding part. One end of the first holding part is detachably connected to a pliers rod part, and one end of the pliers rod part is rotatably connected to a biting part. The pliers rod part includes a sleeve, an adjusting and tightening assembly and a biting and pulling assembly installed on the sleeve; the adjusting and tightening assembly includes an adjusting tube slidably sleeved on the outer wall of the sleeve, a top rod connected to the adjusting tube, and a fastening screw installed on the adjusting tube. The biting and pulling assembly includes a first pulling rod and a second pulling rod movably connected to the first pulling rod. One end of the first pulling rod is connected to the second holding part; a first joint socket is arranged at one end of the sleeve, a second joint socket is slidably arranged above the first joint socket, and the other end of the first pulling rod is connected to the convex surface of the second joint socket; the biting part includes a connecting seat, a first joint ball head is arranged at one end of the connecting seat, a biting seat and a biting knife adapted to the biting seat are arranged at the other end. The first joint ball head is rotatably connected to the concave surface of the first joint socket in an adapted manner, and the top rod passes through the first joint socket and abuts against and limits the first joint ball head; the second pulling rod is slidably installed on the connecting seat, a second joint ball head rotatably connected to the concave surface of the second joint socket is arranged at one end of the second pulling rod, and the other end is connected to the biting knife.

[0010] In the above technical solution, further, the sleeve is a hollow column tube. A first chute and a second chute are oppositely arranged on the side wall of the sleeve. The top rod is slidably installed in the first chute in an adapted manner, and the first pulling rod is slidably installed in the second chute in an adapted manner; after the biting part rotates to a target angle relative to the sleeve through the first joint ball head and the second joint ball head, slide the adjusting tube along the sleeve, drive the top rod to slide towards the first joint ball head and abut against the first joint ball head tightly, and rotate the fastening screw on the adjusting tube so that the fastening screw abuts against the sleeve tightly to realize the limitation of the biting part.

[0011] Furthermore, a through hole allowing the top rod to pass through is opened on the first joint socket. A concave arc surface is arranged at the end of the top rod extending into the first joint socket, and the concave arc surface is used for abutting against the first joint ball head in an adapted manner.

[0012] Furthermore, both the concave surface of the first joint socket and the spherical surface of the first joint ball head are rough surfaces.

[0013] Further, the connecting seat is of a columnar structure. A cutting groove is arranged on the side wall of the connecting seat close to the biting seat, and the bottom surface of the biting seat is flush with the bottom of the cutting groove.

[0014] Further, the first holding part includes a first grip ring, a first connecting rod, and a first mounting seat that are connected in sequence. A rotating pin and a mounting hole seat are provided on the first mounting seat; the second holding part includes a second grip ring, a second connecting rod, and a second mounting seat that are connected in sequence. A rotating hole adapted to be installed with the rotating pin is provided on the second mounting seat. A pulling groove is provided at the edge of the second mounting seat. A pulling block adapted to be connected with the pulling groove is provided at the end of the first pull rod; when holding the first grip ring and the second grip ring to relatively rotate the first holding part and the second holding part, the first pull rod reciprocally slides relative to the sleeve along with the movement of the second holding part, and the first pull rod drives the second pull rod to reciprocally slide along the length direction of the connecting seat through the second ball socket seat. Furthermore, the second pull rod drives the clamping knife to complete the clamping or opening action relative to the clamping seat.

[0015] Furthermore, a disassembly and assembly screw is provided on the mounting hole seat. One end of the sleeve is adaptively inserted into the mounting hole seat, and the first pull rod penetrates through the mounting hole seat and is connected to the pulling groove. The disassembly and assembly screw is threadedly connected to the side wall of the mounting hole seat to realize the tightening and fixing or loosening and removal of the sleeve inserted into the mounting hole seat.

[0016] Further, a knife seat is provided at one end of the clamping knife. The knife seat includes two relatively parallel seat plates. First arc-shaped guide grooves are respectively formed on the opposite plate surfaces of the two seat plates. The first arc-shaped guide grooves are formed along the path of a half circle. Second arc-shaped guide grooves are correspondingly provided on the other side plate surface of each seat plate. The second arc-shaped guide grooves are formed along the path of a quarter circle.

[0017] Furthermore, one end of the second pull rod is adaptively inserted between the two seat plates. First mounting protrusions and second mounting protrusions are oppositely provided on the second pull rod. The first mounting protrusion is adaptively installed with the first arc-shaped guide groove on one seat plate, and the second mounting protrusion is adaptively installed with the first arc-shaped guide groove on the other seat plate.

[0018] Furthermore, a mounting groove for adaptively installing the knife seat is formed on the clamping seat. Arc-shaped protrusions are respectively correspondingly provided on the two opposite groove walls of the mounting groove. The arc-shaped protrusions are formed along the path of a quarter circle. One arc-shaped protrusion is adaptively fitted and installed with the second arc-shaped guide groove on one seat plate, and the other arc-shaped protrusion is adaptively fitted and installed with the second arc-shaped guide groove on the other seat plate.

[0019] Furthermore, when the second pull rod is driven by the first pull rod to move in the direction away from the clamping part, the first mounting protrusion and the second mounting protrusion on the second pull rod respectively slide in the corresponding first arc-shaped guide grooves, and the knife seat of the clamping knife slides along the arc-shaped protrusion on the clamping seat through the second arc-shaped guide groove on it, and the clamping knife rotates and opens relative to the clamping seat.

[0020] Compared with the prior art, the present application has at least the following beneficial effects:

[0021] 1. This application is based on further analysis and research of the problems in the prior art. It is recognized that existing blue forceps can basically only make the forceps head rotate around the central axis of the blue forceps rod, and cannot achieve actions such as upward bending, downward bending, left bending, and right bending of the forceps head. Therefore, its angle adjustment range is limited. For this reason, this application provides a pair of blue forceps. Two sets of movable joints are formed by the first articular socket, the first articular ball head, the second articular socket, and the second articular ball head. An adjusting and tightening assembly and a biting and pulling assembly are arranged in the sleeve of the forceps rod. The adjusting and tightening assembly is connected to the biting part through the first articular socket and the first articular ball head, and realizes the rotational limit fixation of the biting part. The biting and pulling assembly cooperates with the second articular socket and the second articular ball head to realize the rotational adjustment and pulling action control of the biting knife of the biting part. Therefore, when the blue forceps provided in this application are used, multi-angle adjustments such as upward bending, downward bending, left bending, right bending, left oblique upward bending, left oblique downward bending, right oblique upward bending, and right oblique downward bending of the biting part relative to the sleeve can be realized through the two sets of movable joints; after the biting part is adjusted to the target angle, the ejector rod and the fastening screw of the adjusting and tightening assembly can be used to tighten the first articular ball head, so that the first articular ball head is limited and fixed under the tightening force and the friction force with the first articular socket. Then, the first holding part and the second holding part driven by hinges drive the biting and pulling assembly to traction the biting knife to rotate and bite or rotate and open relative to the biting seat. Therefore, compared with traditional blue forceps, the blue forceps provided in this application have a wider adjustment angle of the biting part, can adapt to various operating angles that need to be bent upward, downward, leftward, rightward, or obliquely during surgery, facilitate the operation of doctors, and do not require frequent replacement of blue forceps, thus improving the surgical efficiency.

[0022] 2. Two chutes are oppositely arranged on the sleeve of the blue forceps provided in this application. The ejector rod and the first pulling rod are respectively arranged in one chute. The chute can play a role of moving guidance, ensuring the transmission coherence and stability, and ensuring the action accuracy.

[0023] 3. In this application, the ejector rod is integrally connected with the adjusting tube. By sliding the adjusting tube along the sleeve, the tightening degree of the ejector rod on the first articular ball head can be adjusted to realize the angle adjustment of the biting part. After the adjustment is in place, the angle can be locked by tightening the fastening screw on the adjusting tube against the sleeve, ensuring that the angle of the biting part will not change during the operation of the doctor and ensuring the reliable structure.

[0024] 4. The end of the ejector rod used to tighten the first articular ball head in this application is provided with a concave arc surface, which can be adapted to and abutted against the spherical surface of the first articular ball head to achieve surface contact, improving the reliability of locking. Moreover, the inner concave surface of the first articular socket and the spherical surface of the first articular ball head in this application are both rough surfaces. The setting of this rough surface can increase the frictional resistance during locking and does not affect the angle adjustment after unlocking.

[0025] 5. A cutting groove is provided on the connecting seat of the occluding part in this application. The bottom of the cutting groove is flush with the bottom surface of the occluding seat. The setting of the cutting groove can reduce the thickness of the occluding seat. A thinner occluding seat can adapt to a smaller joint space, avoiding the problem that the blue forceps cannot be inserted when the patient's joint space is small and the surgical operation cannot be performed.

[0026] 6. In this application, the first holding part and the second holding part are hinged, and the forceps rod part can be detachably connected to the mounting hole seat on the first holding part. A disassembly and assembly screw is provided on the mounting hole seat. Loosen the disassembly and assembly screw to pull out the forceps rod part. This detachable structure design is convenient for maintenance and replacement.

[0027] 7. In this application, the pulling block at the end of the first pull rod is detachably and adaptively connected to the pulling groove on the second holding part. After loosening the disassembly and assembly screw, the forceps rod part is pulled out from the mounting hole seat, and the pulling block can be disengaged from the pulling groove. During installation, the pulling block can be inserted into the pulling groove, and after the forceps rod part is inserted in place, tighten the disassembly and assembly screw.

[0028] 8. In this application, the occluding knife is rotationally connected to the mounting groove on the occluding seat through a knife seat, and a second pull rod is inserted into and slidably connected to the knife seat. The guiding and sliding structures between the knife seat and the mounting groove and between the knife seat and the second pull rod both adopt the form of guide grooves and protrusions, without fasteners such as screws. The overall structure is reliably connected and exquisitely matched. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. It should be understood that the specific shapes and structures shown in the drawings generally should not be regarded as limiting conditions when implementing this application; for example, those skilled in the art are capable of making conventional adjustments or further optimizations to the addition / deletion / attribution division of certain units (components), specific shapes, positional relationships, connection methods, dimensional ratio relationships, etc. based on the technical concepts disclosed in this application and the exemplary drawings.

[0030] Figure 1 It is a front view structural schematic diagram of the blue forceps provided in this application in one embodiment;

[0031] Figure 2 It is a three-dimensional structural schematic diagram of the blue forceps provided in this application in one embodiment;

[0032] Figure 3 It is a structural schematic diagram of the remaining structure after removing a part of the outer shell of the first holding part of the blue forceps in this application in one embodiment;

[0033] Figure 4 is Figure 3 a schematic diagram of a partially enlarged structure at position A in

[0034] Figure 5 a schematic cross-sectional structure diagram of the blue clamp provided by the present application in an embodiment;

[0035] Figure 6 is Figure 5 a schematic diagram of a partially enlarged structure at position B in

[0036] Figure 7 a schematic diagram of the structure of the rod part and the biting part of the blue clamp provided by the present application in an embodiment, showing the disassembled state of the sleeve, the ejector rod and the first pull rod in the figure;

[0037] Figure 8 a schematic top view structure diagram of the biting part of the blue clamp provided by the present application in an embodiment;

[0038] Figure 9 is Figure 8 a schematic disassembled structure diagram of the biting knife and the biting seat in

[0039] Figure 10 a schematic bottom view structure diagram of the biting part of the blue clamp provided by the present application in an embodiment;

[0040] Figure 11 a schematic diagram of the structure of the biting knife of the blue clamp provided by the present application in an embodiment.

[0041] Explanation of reference numerals:

[0042] 1. First holding part; 11. First grip ring; 12. First connecting rod; 13. First mounting seat; 14. Rotating pin; 15. Mounting hole seat; 16. Disassembly and assembly screw;

[0043] 2. Second holding part; 21. Second grip ring; 22. Second connecting rod; 23. Second mounting seat; 24. Pulling groove;

[0044] 3. Rod part; 31. Sleeve; 32. First joint socket; 33. Adjusting and tightening assembly; 331. Adjusting tube; 332. Ejector rod; 333. Tightening screw; 34. Biting and pulling assembly; 341. First pull rod; 3411. Pulling block; 342. Second pull rod; 3421. First mounting protrusion; 3422. Second mounting protrusion; 343. Second joint socket; 344. Second joint ball head;

[0045] 4. Biting part; 41. Connecting seat; 411. Cutting groove; 42. First joint ball head; 43. Biting seat; 431. Mounting groove; 432. Arc-shaped protrusion; 44. Biting knife; 441. Knife seat; 4411. First arc-shaped guide groove; 4412. Second arc-shaped guide groove. Detailed implementation manners

[0046] The following further details the present application through specific embodiments in conjunction with the accompanying drawings.

[0047] In the description of the present application: Unless otherwise specified, the meaning of "a plurality" is two or more. Terms such as "first" and "second" in the present application are intended to distinguish the objects being referred to, and do not have special significance in terms of technical connotations (for example, they should not be understood as emphasizing importance or order, etc.). Expressions such as "including", "comprising", and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0048] Terms such as "upper", "lower", "left", and "right" cited in the present application are usually for facilitating intuitive understanding with reference to the accompanying drawings, rather than an absolute limitation on the positional relationship in the actual product. Without departing from the technical concept disclosed in the present application, changes in these relative positional relationships should also be regarded as within the scope of the present application's description.

[0049] To solve the problems existing in the prior art, the present application provides a blue forceps capable of multi-angle adjustment. The occluding part of the blue forceps can be bent upwards, downwards, leftwards, rightwards, upwards and leftwards obliquely, downwards and leftwards obliquely, upwards and rightwards obliquely, downwards and rightwards obliquely, etc. relative to the forceps rod part. When using this blue forceps to trim the meniscus, the doctor can simply adjust the blue forceps according to the required angle to meet the target trimming angle. The operation is simple, and there is no need to frequently replace different blue forceps, which improves the surgical efficiency. The structural principle and adjustment method of this blue forceps are described in detail below.

[0050] In one embodiment, referring to Figure 1 、 2 , the present application provides a blue forceps capable of multi-angle adjustment, which mainly includes a first holding part 1, a second holding part 2, a forceps rod part 3, and an occluding part 4. Specifically: The first holding part 1 and the second holding part 2 are hinged, similar to scissors. One end of the first holding part 1 is detachably connected to the forceps rod part 3 in a plug-in manner for convenient disassembly and replacement. One end of the forceps rod part 3 is rotatably connected to the occluding part 4 to achieve multi-angle adjustment.

[0051] Referring to Figure 3 、 5, the above-mentioned tong rod part 3 mainly includes a sleeve 31, an adjusting and tightening assembly 33 and a biting and pulling assembly 34 installed on the sleeve 31. Specifically: The adjusting and tightening assembly 33 mainly includes an adjusting tube 331 slidably sleeved on the outer wall of the sleeve 31, a push rod 332 connected to the adjusting tube 331, and a fastening screw 333 installed on the adjusting tube 331; The biting and pulling assembly 34 mainly includes a first pull rod 341 and a second pull rod 342 movably connected to the first pull rod 341, and one end of the first pull rod 341 is connected to the second holding part 2.

[0052] See Figure 6 , one end of the sleeve 31 of the above-mentioned tong rod part 3 is provided with a first socket 32, a second socket 343 is slidably arranged above the first socket 32, the other end of the first pull rod 341 is connected to the convex surface of the second socket 343, and the two sockets are key components for the biting part 4 to rotate relative to the tong rod part 3.

[0053] See Figure 3 , 6 , the above-mentioned biting part 4 includes a connecting seat 41, a first spherical head 42 is arranged at one end of the connecting seat 41, a biting seat 43 and a biting knife 44 adapted to the biting seat 43 are arranged at the other end, the first spherical head 42 is rotatably connected to the concave surface of the first socket 32 in an adapted manner, the push rod 332 passes through the first socket 32 and abuts against and limits the first spherical head 42, and the first spherical head 42 and the first socket 32 form a set of movable joints, which are functional components for realizing the rotation of the biting part 4 relative to the tong rod part 3; The second pull rod 342 is slidably installed on the connecting seat 41, a second spherical head 344 rotatably connected to the concave surface of the second socket 343 is arranged at one end of the second pull rod 342, and the other end is connected to the biting knife 44. The second spherical head 344 and the second socket 343 form another set of movable joints, which are also functional components for realizing the rotation of the biting part 4 relative to the tong rod part 3.

[0054] Therefore, the blue tong provided by the present application forms two sets of movable joints through the first socket 32, the first spherical head 42, the second socket 343 and the second spherical head 344, and an adjusting and tightening assembly 33 and a biting and pulling assembly 34 are arranged in the sleeve 31 of the tong rod part 3. The adjusting and tightening assembly 33 is connected to the biting part 4 through the first socket 32 and the first spherical head 42, and realizes the rotational limit and fixation of the biting part 4. The biting and pulling assembly 34 cooperates with the second socket 343 and the second spherical head 344 to realize the rotational adjustment and pulling action control of the biting knife 44 of the biting part 4. Through the above structural design, the blue tong provided by the present application can realize multi-angle adjustment of the biting part 4 relative to the sleeve 31, such as upward bending, downward bending, left bending, right bending, left obliquely upward bending, left obliquely downward bending, right obliquely upward bending, right obliquely downward bending, etc. under the support of two sets of movable joints.

[0055] In one embodiment, referring to Figure 7 , the sleeve 31 of the pliers rod portion 3 is a hollow columnar tube, which can be a round tube, a square tube, etc. A first sliding groove and a second sliding groove are oppositely arranged on the side wall of the sleeve 31. The ejector rod 332 is slidably installed in the first sliding groove in a matching manner, and the first pull rod 341 is slidably installed in the second sliding groove in a matching manner; the sliding groove can play a role in moving guidance, ensuring the continuity and stability of transmission and ensuring the action accuracy.

[0056] In one embodiment, continue to refer to Figure 7 , after the above-mentioned occluding portion 4 rotates relative to the sleeve 31 to a target angle through the first spherical joint 42 and the second spherical joint 344, the adjusting tube 331 is slid along the sleeve 31, driving the ejector rod 332 to slide toward the first spherical joint 42 and abutting tightly against the first spherical joint 42. The fastening screw 333 on the adjusting tube 331 is rotated so that the fastening screw 333 abuts tightly against the sleeve 31 to realize the limit of the occluding portion 4. Therefore, during use, after the occluding portion 4 is adjusted to the target angle, the ejector rod 332 and the fastening screw 333 of the tightening assembly 33 can be adjusted to tightly abut against the first spherical joint 42, so that the first spherical joint 42 is limited and fixed under the tightening force and the friction force with the first acetabular socket 32, ensuring that the angle of the occluding portion 4 does not change during the doctor's operation and ensuring the reliable structure. After the fixation is completed, the occluding and pulling assembly 34 can be driven by the articulated first holding portion 1 and the second holding portion 2 to drive the occluding knife 44 to rotate and occlude or rotate and open relative to the occluding seat 43 for meniscus trimming operation.

[0057] In one embodiment, a through hole allowing the ejector rod 332 to pass through is provided on the first acetabular socket 32. The end of the ejector rod 332 extending to the first acetabular socket 32 is provided with a concave arc surface, which can be adapted to abut against the spherical surface of the first spherical joint 42 to achieve surface contact, improving the reliability of locking. And in this application, the inner concave surface of the first acetabular socket 32 and the spherical surface of the first spherical joint 42 are both rough surfaces. The setting of this rough surface can increase the frictional resistance during locking and does not affect the angle adjustment after unlocking.

[0058] In one embodiment, referring to Figure 3 , the connecting seat 41 of the occluding portion 4 is a columnar structure. Referring to Figure 6 , a cutting groove 411 is provided on the side wall of the connecting seat 41 close to the occluding seat 43. The bottom surface of the occluding seat 43 is flush with the bottom of the cutting groove 411. The bottom of the cutting groove 411 can be a horizontal plane or a slope surface. If it is a slope surface, the bottom surface of the occluding seat 43 is smoothly arranged along the slope surface, that is, the inclination angle of the bottom surface of the occluding seat 43 is the same as the inclination angle of the slope surface. The setting of the cutting groove 411 can reduce the thickness of the occluding seat 43. The thinner occluding seat 43 can adapt to a smaller joint gap, avoiding the problem that the blue pliers cannot be inserted when the patient's joint gap is small and the operation cannot be performed.

[0059] During specific processing and manufacturing, the thickness of the occlusal seat 43 can be adaptively processed according to the value of the minimum joint clearance of the human body obtained through clinical statistics. The production material of the blue forceps provided in this application is stainless steel, so its structural strength of the occlusal seat 43 can be guaranteed.

[0060] In one embodiment, referring to Figure 3 , the structures of the first holding portion 1 and the second holding portion 2 are similar, and both include a grip ring and a connecting rod. Specifically: the first holding portion 1 mainly includes a first grip ring 11, a first connecting rod 12, and a first mounting seat 13 connected in sequence. A rotating pin 14 and a mounting hole seat 15 are provided on the first mounting seat 13; the second holding portion 2 mainly includes a second grip ring 21, a second connecting rod 22, and a second mounting seat 23 connected in sequence. A rotating hole adapted to be mounted with the rotating pin 14 is provided on the second mounting seat 23. Therefore, the first holding portion 1 and the second holding portion 2 are hinged through the rotating pin 14.

[0061] Referring to Figure 4 , a pulling groove 24 is further provided at the edge of the second mounting seat 23, and a pulling block 3411 adapted to be connected to the pulling groove 24 is provided at the end of the first pull rod 341.

[0062] When holding the first grip ring 11 and the second grip ring 21 to make the first holding portion 1 and the second holding portion 2 rotate relative to each other, the first pull rod 341 reciprocally slides relative to the sleeve 31 along with the movement of the second holding portion 2, and the first pull rod 341 drives the second pull rod 342 to reciprocally slide along the length direction of the connecting seat 41 through the second joint socket 343. Furthermore, the second pull rod 342 drives the occlusal knife 44 to complete the occlusal or opening action relative to the occlusal seat 43.

[0063] In one embodiment, the first holding portion 1 and the forceps rod portion 3 are detachably connected. Therefore, a disassembly and assembly screw 16 is provided on the mounting hole seat 15 of the first holding portion 1. One end of the sleeve 31 is adaptively inserted into the mounting hole seat 15, and the first pull rod 341 passes through the mounting hole seat 15 and is connected to the pulling groove 24. The disassembly and assembly screw 16 is threadedly connected to the side wall of the mounting hole seat 15 to realize the tightening and fixing or loosening and removal of the sleeve 31 inserted into the mounting hole seat 15. Loosening the disassembly and assembly screw 16 can pull out the forceps rod portion 3. This detachable structure design is convenient for maintenance and replacement. At the same time, preferably, the pulling block 3411 is adaptively and detachably connected to the pulling groove 24. After loosening the disassembly and assembly screw 16, the forceps rod portion 3 is pulled out from the mounting hole seat 15, and the pulling block 3411 can be disengaged from the pulling groove 24. During installation, the pulling block 3411 can be inserted into the pulling groove 24, and after the forceps rod portion 3 is inserted in place, the disassembly and assembly screw 16 is tightened.

[0064] In one embodiment, the implementation structure for the second pull rod 342 in the present application to drive the biting knife 44 to rotate and bite or rotate and open relative to the biting seat 43 is as follows:

[0065] Refer to Figure 9 、 11 , a tool holder 441 is provided at one end of the biting knife 44. The tool holder 441 mainly includes two relatively parallel seat plates. First arc-shaped guide grooves 4411 are respectively formed on the opposite plate surfaces of the two seat plates. The first arc-shaped guide grooves 4411 are formed along the path of a half circle. Second arc-shaped guide grooves 4412 are correspondingly provided on the other side plate surface of each seat plate. The second arc-shaped guide grooves 4412 are formed along the path of a quarter circle.

[0066] Refer to Figure 8 、 9 , one end of the second pull rod 342 is adaptively inserted between the two seat plates. First mounting protrusions 3421 and second mounting protrusions 3422 are oppositely arranged on the second pull rod 342. The first mounting protrusion 3421 is adaptively mounted with the first arc-shaped guide groove 4411 on one seat plate, and the second mounting protrusion 3422 is adaptively mounted with the first arc-shaped guide groove 4411 on the other seat plate.

[0067] Refer to Figure 9 、 10 , an installation groove 431 for adaptively mounting the tool holder 441 is formed on the biting seat 43. Arc-shaped protrusions 432 are respectively provided on the two opposite groove walls of the installation groove 431. The arc-shaped protrusions 432 are formed along the path of a quarter circle. One arc-shaped protrusion 432 is adaptively and fittingly mounted with the second arc-shaped guide groove 4412 on one seat plate, and the other arc-shaped protrusion 432 is adaptively and fittingly mounted with the second arc-shaped guide groove 4412 on the other seat plate.

[0068] Based on the above structure, when the second pull rod 342 is driven by the first pull rod 341 to move in a direction away from the biting part 4, the first mounting protrusion 3421 and the second mounting protrusion 3422 on the second pull rod 342 respectively slide in the corresponding first arc-shaped guide grooves 4411, and the tool holder 441 of the biting knife 44 slides along the arc-shaped protrusions 432 on the biting seat 43 through the second arc-shaped guide grooves 4412 on it, and the biting knife 44 rotates and opens relative to the biting seat 43.

[0069] It can be seen that in the present application, the biting knife 44 is adaptively rotationally connected to the installation groove 431 on the biting seat 43 through the tool holder 441, and the second pull rod 342 is inserted into the tool holder 441 and is slidably connected to the second pull rod 342. Both between the tool holder 441 and the installation groove 431 and between the tool holder 441 and the second pull rod 342 adopt a guiding and sliding structure in the form of a guide groove and a protrusion, similar to a mortise and tenon structure, without fasteners such as screws. The overall structure is reliably connected and exquisitely matched.

[0070] In summary, the blue forceps provided by the present application can achieve multi-angle adjustment of the occluding part relative to the sleeve through two sets of movable joints, such as upward bending, downward bending, leftward bending, rightward bending, left oblique upward bending, left oblique downward bending, right oblique upward bending, right oblique downward bending, etc. After the occluding part is adjusted to the target angle, the ejector rod and fastening screw of the tightening assembly can be adjusted to tighten the first joint ball head, so that the first joint ball head is limited and fixed under the tightening force and the friction force with the first joint socket. Then, the occluding pulling assembly is driven by the hinged first holding part and the second holding part to drive the occluding knife to rotate and occlude or rotate and open relative to the occluding seat, and the second joint socket and the second joint ball head cooperate to achieve structural pulling during the pulling process; therefore, the blue forceps provided by the present application can adapt to various operating angles that need to be bent upward, downward, leftward, rightward or obliquely, which is convenient for doctors to operate, without the need to frequently replace the blue forceps, and improves the surgical efficiency.

[0071] The technical features of the above embodiments can be combined arbitrarily (as long as there is no contradiction in the combination of these technical features). For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written out should also be considered to be within the scope described in this specification.

[0072] In the above text, the present application has been described in a relatively specific and detailed manner through general descriptions and specific embodiments. It should be understood that based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; but as long as they do not depart from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the present application.

Claims

1. A blue pliers capable of multi-angle adjustment, comprising a first holding part and a second holding part hinged to the first holding part, one end of the first holding part being detachably connected to a pliers rod part, characterized in that, One end of the pliers rod part is rotatably connected to the biting part. The pliers rod part includes a sleeve, an adjusting and tightening assembly and a biting and pulling assembly mounted on the sleeve. The adjusting and tightening assembly includes an adjusting tube slidably sleeved on the outer wall of the sleeve, a top rod connected to the adjusting tube, and a fastening screw mounted on the adjusting tube. The biting and pulling assembly includes a first pulling rod and a second pulling rod movably connected to the first pulling rod. One end of the first pulling rod is connected to the second holding part. One end of the sleeve is provided with a first socket. A second socket is slidably arranged above the first socket. The other end of the first pulling rod is connected to the convex surface of the second socket. The biting part includes a connecting seat. One end of the connecting seat is provided with a first ball head, and the other end is provided with a biting seat and a biting knife adapted to the biting seat. The first ball head is rotatably connected to the concave surface of the first socket in an adapted manner. The top rod passes through the first socket and abuts against and limits the first ball head. The second pulling rod is slidably mounted on the connecting seat. One end of the second pulling rod is provided with a second ball head rotatably connected to the concave surface of the second socket in an adapted manner, and the other end is connected to the biting knife.

2. The blue clamp capable of multi-angle adjustment according to claim 1, wherein The sleeve is a hollow columnar tube. A first chute and a second chute are oppositely arranged on the side wall of the sleeve. The top rod is slidably mounted in the first chute in an adapted manner, and the first pulling rod is slidably mounted in the second chute in an adapted manner. After the biting part rotates relative to the sleeve to a target angle through the first ball head and the second ball head, slide the adjusting tube along the sleeve, drive the top rod to slide towards the first ball head and abut against the first ball head tightly, and rotate the fastening screw on the adjusting tube so that the fastening screw abuts against the sleeve tightly to realize the limitation of the biting part.

3. The blue clamp capable of multi-angle adjustment according to claim 2, wherein A through hole allowing the top rod to pass through is formed in the first socket. The end of the top rod extending into the first socket is provided with a concave arc surface for abutting against the first ball head in an adapted manner. Both the concave surface of the first socket and the spherical surface of the first ball head are rough surfaces.

4. The blue clamp capable of multi-angle adjustment according to claim 1, wherein The connecting seat is of a columnar structure. A cutting groove is arranged on the side wall of the connecting seat close to the biting seat. The bottom surface of the biting seat is flush with the bottom of the cutting groove.

5. The blue clamp capable of multi-angle adjustment according to claim 1, wherein The first holding part includes a first grip ring, a first connecting rod and a first mounting seat connected in sequence. A rotating pin and a mounting hole seat are arranged on the first mounting seat. The second gripping part includes a second gripping ring, a second connecting rod and a second mounting seat which are connected in sequence; the second mounting seat is provided with a rotating hole which is adapted to be mounted with the rotating pin; a pulling groove is provided at the edge of the second mounting seat; and a pulling block which is adapted to be connected with the pulling groove is provided at the end of the first pulling rod; when the first gripping ring and the second gripping ring are gripped to make the first gripping part and the second gripping part rotate relative to each other, the first pulling rod slides back and forth relative to the sleeve along with the movement of the second gripping part, and the first pulling rod pulls the second pulling rod to slide back and forth along the length direction of the connecting seat through the second acetabulum, and then the second pulling rod drives the bite knife to complete the bite or opening action relative to the bite seat.

6. The blue pliers capable of multi-angle adjustment according to claim 5, wherein The mounting hole seat is provided with a disassembly screw, one end of the sleeve is adapted to be inserted into the mounting hole seat, and the first pulling rod passes through the mounting hole seat and is connected to the pulling groove, and the disassembly screw is threadedly connected to the side wall of the mounting hole seat to achieve tight fixation or loose removal of the sleeve inserted in the mounting hole seat.

7. The blue clamp capable of multi-angle adjustment according to claim 1, characterized in that, A knife seat is arranged at one end of the bite knife, and the knife seat includes two relatively parallel seat plates, and first arc guide grooves are respectively opened on the opposite plate surfaces of the two seat plates, and the first arc guide grooves are formed along a path of half a circular arc, and a second arc guide groove is correspondingly arranged on the other side plate surface of each seat plate, and the second arc guide groove is formed along a path of a quarter circular arc.

8. The blue clamp capable of multi-angle adjustment according to claim 7, wherein One end of the second pulling rod is adapted to be inserted between the two seat plates, and a first mounting protrusion and a second mounting protrusion are relatively arranged on the second pulling rod. The first mounting protrusion is adapted to be installed in the first arc-shaped guide groove on one seat plate, and the second mounting protrusion is adapted to be installed in the first arc-shaped guide groove on the other seat plate.

9. The blue clamp capable of multi-angle adjustment according to claim 8, wherein The engaging seat forms a mounting groove for fitting the knife seat, and two opposite groove walls of the mounting groove are respectively provided with arc-shaped protrusions, and the arc-shaped protrusions are formed along a path of a quarter arc, and one of the arc-shaped protrusions is fitted and installed in a second arc-shaped guide groove on one of the seat plates, and the other arc-shaped protrusion is fitted and installed in a second arc-shaped guide groove on the other seat plate.

10. The blue clamp capable of multi-angle adjustment according to claim 9, characterized in that, When the second pulling rod is driven by the first pulling rod to move in the direction away from the engaging part, the first mounting protrusion and the second mounting protrusion on the second pulling rod slide in the first arc-shaped guide groove corresponding thereto respectively, and the knife seat of the engaging knife slides along the arc-shaped protrusion on the engaging seat through the second arc-shaped guide groove thereon, and the engaging knife opens relative to the rotation of the engaging seat.

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