Cervical lesion tissue biopsy forceps capable of fixing, preventing slipping and accurately positioning

Abstract

The present invention relates to the technical field of biopsy forceps, and in particular to a biopsy forceps for cervical lesion tissue that can be fixed, non-slip and accurately positioned. It includes a forceps body and a positioning and attraction component installed on the forceps body; the forceps body includes a fixed handle, a movable handle, a fixed forceps rod, a sliding push rod, a movable forceps head and an elastic top pressure piece; the positioning and attraction component includes a guide block, a suction nozzle and a tube body, the end of the tube body is connected to a negative pressure pump body, and the positioning and attraction component also includes a traction component fixedly connected to the movable handle and the tube body between the guide block and the fixed handle. The present invention adds a positioning and attraction component to the existing biopsy forceps, and uses the suction nozzle to absorb and position the part to be collected, and during the shearing process of the movable forceps head, the absorbed part is pulled backward and sent into the shearing port to facilitate the collection of living tissue. It has the advantages of fixed and non-slip, accurate sample collection, improved work efficiency and reduced pain for patients during examination.

Description

Technical Field

[0001] The invention relates to the technical field of biopsy forceps, in particular to a biopsy forceps for cervical lesion tissue which can be fixed, prevented from slipping and accurately positioned. Background Art

[0002] Cervical biopsy is a biopsy of the cervix, which uses biopsy forceps to take a small piece or several pieces of tissue from the surface of the cervix for pathological examination to confirm the diagnosis. It is often used when the cervix is ​​suspected of cancer, or there are suspected cancer cells in the cervical scraping, or there is suspected specific inflammation, such as cervical tuberculosis. Cervical biopsy can confirm the diagnosis and determine the treatment method. Cervical biopsy is a reliable basis for confirming cervical cancer.

[0003] Patent number "ZL201920285929.1" is a disposable cervical biopsy forceps, the biopsy forceps includes a fixed handle, a movable handle, an elastic plate, a clamp rod, a push rod and a clamp head, the upper end of the fixed handle is fixedly connected to the clamp rod, and the connection between the fixed handle and the clamp rod is longitudinally provided with a through opening, the movable handle is inserted into the opening and connected to the fixed handle, the fixed handle and the movable handle are connected by a V-shaped elastic plate, and a horizontal push rod is provided on the top of the movable handle, and the push rod is placed on the upper surface of the clamp rod. The biopsy forceps uses the upper and lower opening and closing of the clamp head to collect samples. The following problems exist in the collection process: because the surface of the cervix is ​​very slippery, especially for postmenopausal women, the cervix is ​​hard, and the biopsy forceps are more likely to slip and shift during the sampling process, and it is difficult to accurately collect cervical living tissue at one time. It often takes multiple operations to take out the required samples, which will cause low work efficiency of medical staff and increase the pain of patients. Summary of the invention

[0004] The purpose of the present invention is to overcome the above shortcomings and provide a cervical lesion tissue biopsy forceps that can be fixed, non-slip and accurately positioned. The biopsy forceps adds a positioning and suction component on the basis of the existing biopsy forceps, and the part to be collected is adsorbed and positioned through the suction nozzle. During the cutting process of the movable forceps head, the adsorbed part is pulled backward and sent into the cutting port to facilitate the collection of living tissue. It has the advantages of fixed and non-slip, accurate sample collection, improved work efficiency and reduced patient pain during examination.

[0005] The present invention is realized by the following technical scheme: a cervical lesion tissue biopsy forceps capable of fixing, preventing slipping and accurately positioning, characterized in that: it comprises a forceps body and a positioning and attracting assembly installed on the forceps body; the forceps body comprises a fixed handle, a movable handle, a fixed forceps rod, a sliding push rod, a movable forceps head, and an elastic pressing member;

[0006] The fixing clamp rod is extended in the transverse direction and the transverse rear end is fixedly connected to the upper end portion of the fixing handle. The fixing clamp rod is provided with a slot hole extending in the vertical direction and passing through the fixing clamp rod at the transverse rear end near the fixing handle. The movable handle is located in the transverse front of the fixed handle and is located below the slot hole. The upper end of the movable handle is fixedly provided with a connecting rod body extending upward in the vertical direction. The connecting rod body is passed through the slot hole and passes through the slot hole upward. The sliding push rod is also extended in the transverse direction and is slidably connected to the fixed clamp rod in the transverse direction; the lower end of the connecting rod body is hinged with the fixed clamp rod through a first pin extending in the longitudinal direction, and the upper end of the connecting rod body is hinged with the sliding push rod through a second pin extending in the longitudinal direction. The elastic top pressure piece is pressed between the fixed handle and the lower side portion of the movable handle to keep the fixed handle and the lower side portion of the movable handle in a tendency to separate; the transverse front end of the fixed clamp rod is provided with a slot hole extending in the vertical direction and passing through the fixing clamp rod at a position close to the front end wall. The collecting hole of the fixed clamp rod, the movable clamp head comprises a connecting body and a clamp, the connecting body is located at the lateral rear of the collecting hole and close to the collecting hole, and the lower end of the connecting body is hinged to the fixed clamp rod through a third pin shaft extending in the longitudinal direction, the upper end of the connecting body is hinged to the sliding push rod through a fourth pin shaft extending in the longitudinal direction, the lateral rear end of the clamp is fixedly connected to the upper end of the connecting body, and the vertical connection line of the axis of the third pin shaft and the fourth pin shaft is inclined to the clamp; when the fixed handle and the movable handle are not subjected to an external force that causes the lower side parts of the two to close together, the clamp is located above the collecting hole and the position of the lateral front end of the clamp is higher than the position of the lateral rear end so that an angle less than 90 degrees is formed between the clamp and the front end of the fixed handle; when the fixed handle and the movable handle are subjected to an external force that causes the lower side parts of the two to close together and close each other, the clamp can be embedded in the collecting hole during the rotation process around the third pin shaft, so that the material embedded between the collecting hole and the clamp can be sheared;

[0007] The positioning and suction assembly includes a guide block fixedly connected to the fixed clamp rod and located at the transverse rear of the movable clamp head and one or more suction nozzles arranged on the longitudinal outer side of the movable clamp head, the guide block is provided with guide holes of the same number and corresponding position as the suction nozzles and extending through the guide block in the transverse direction, the positioning and suction assembly also includes a tube body connected to each corresponding suction nozzle and movably inserted into the corresponding guide hole of the guide block, the end of the tube body is connected to the negative pressure pump body for providing negative pressure suction to the suction nozzle, the positioning and suction assembly also includes a traction assembly fixedly connected to the movable handle and the tube body between the guide block and the fixed handle; when the movable handle and the fixed handle are not subjected to an external force that causes the lower side portions of the two to close together, the suction front end opening of the suction nozzle is located in the transverse front end wall of the fixed handle; when the fixed handle and the movable handle are subjected to an external force that causes the lower side portions of the two to close together and close each other, the movable handle can drive the tube body and the suction nozzle thereon to move and drag along the guide direction of the guide hole toward the transverse rear side through the traction assembly to a position where the suction front end opening of the suction nozzle is located at the transverse rear side of the transverse front end edge of the collection hole.

[0008] Its working principle and process are as follows: the biopsy forceps are sent to the corresponding part, the position to be collected is found, the position is adsorbed and positioned by the suction nozzle, and then the movable handle is manually driven to rotate around the first pin axis in the direction close to the fixed handle. During the rotation process, the movable handle can push the sliding push rod to slide forward relative to the fixed clamp rod through the connecting rod body and the second pin axis, and the sliding push rod can push the clamp of the movable clamp head to rotate downward around the third pin axis during the movement process, so as to shear in the direction close to the collection hole. At the same time, during the rotation process of the movable handle around the first pin axis in the direction close to the fixed handle, the traction assembly connected between the tube body and the movable handle can drive the tube body and the suction nozzle thereon to move backward along the guide direction of the guide hole, so that the suction nozzle can drag the corresponding cervical part to move backward, so as to gradually send it into the angle opening formed by the clamp and the fixed clamp rod, and then the clamp falls to shear and sample. Finally, the force applied by the movable handle is released, and the movable handle is reset under the push of the elastic top pressure piece, and each component is reset in turn under the drive of the movable handle to complete the operation.

[0009] In order to better implement this plan, the following optimization solutions are also provided:

[0010] Preferably, the height position of the suction nozzle in the vertical direction is located between the angle opening formed by the clamp relative to the fixed clamp rod.

[0011] Preferably, the tube body is an elastic hose, and the traction assembly comprises a fixing block fixedly mounted on the movable handle, and the fixing block is fixedly connected to a corresponding portion of the tube body.

[0012] In order to facilitate the disassembly and assembly of the tube body for subsequent disinfection operations, the pliers body, guide block and fixed block are all made of metal materials, the tube body is made of plastic material, and the nozzle is made of rubber material. The fixed block is provided with fixing holes whose number is the same as the number of nozzles and extends through in the transverse direction. The tube body and the fixing holes of the fixed block are tightly fitted and installed. The guide holes of the guide block and the sides of the fixing holes of the fixed block are provided with grooves for facilitating the disassembly and assembly of the tube body and the guide block or the fixed block. The grooves extend through in the transverse direction and penetrate the corresponding longitudinal side walls of the guide holes and the guide blocks or penetrate the corresponding longitudinal side walls of the fixing holes and the fixed blocks in the longitudinal direction, and the arc of the notch of the groove relative to the center of the corresponding guide hole or the fixing hole is less than 180 degrees.

[0013] In order to facilitate the stability of adsorption, the number of the suction nozzles is two and they are arranged on both longitudinal sides of the movable clamp head.

[0014] In order to facilitate the suction buffering of the suction nozzle, the suction nozzle includes an elastic sleeve section fixedly installed with the corresponding tube body and an elastic buffer tube fixedly arranged at the lateral front end of the corresponding elastic sleeve section. The cross-section of the tube wall of the elastic buffer tube in the axial direction is a corrugated shape with alternating concave and convex arrangements.

[0015] Preferably, the guide block is ellipsoidal, and the central axis of the long axis of the ellipsoid extends in the transverse direction. The middle part of the guide block is provided with a mounting hole extending through the guide block in the axial direction parallel to the long axis. The guide block is sleeved on the outer periphery of the fixed clamp rod and the sliding push rod through the mounting through hole, and the fixed clamp rod is tightly fitted and fixedly installed in the mounting through hole, and the sliding push rod is movably inserted into the mounting through hole.

[0016] Preferably, the traction assembly includes a movable block located between the guide block and the movable handle and below the fixed clamp rod and fixedly connected to the tube body, and one or more connecting rods hinged to the movable block at one end and hinged to the movable handle at the other end.

[0017] Compared with the previous technology, the beneficial effects of the present invention are:

[0018] 1. The present invention relates to a cervical lesion tissue biopsy forceps that can be fixed, non-slip and accurately positioned. The biopsy forceps adds a positioning and suction component on the basis of the existing biopsy forceps. The part to be collected is adsorbed and positioned through the suction nozzle, and during the cutting process of the movable forceps head, the adsorbed part is pulled backward and sent into the cutting port to facilitate the collection of living tissue. The biopsy forceps has the advantages of fixed and non-slip, accurate sample collection, improved work efficiency and reduced patient pain during examination.

[0019] 2. The present invention provides a cervical lesion tissue biopsy forceps which can be fixed, prevented from slipping and accurately positioned. In the biopsy forceps, the guide hole of the positioning block and the fixing hole of the fixing block are both provided with slots. The hose can be installed in the positioning block and the fixing block by deformation and contraction. During later disinfection, the hose can be manually pulled out through the slots, so that the hose and the suction nozzle can be taken out for independent disinfection. That is, the hose and the suction nozzle can be sterilized at low temperature, and the metal parts can be sterilized at high temperature. The biopsy forceps has the advantages of being reusable and easy to sterilize and disassemble.

[0020] 3. The cervical lesion tissue biopsy forceps capable of fixing, preventing slipping and accurately positioning of the present invention also has the advantages of simple operation, convenient installation and easy promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the first embodiment;

[0022] Figure 2 It is a structural schematic diagram of the clamp body in the first embodiment;

[0023] Figure 3 This is a schematic diagram of the internal structure of the clamp body in the first embodiment;

[0024] Figure 4 It is a partial structural diagram of embodiment 1;

[0025] Figure 5 It is a structural schematic diagram of the guide block in the first embodiment;

[0026] Figure 6 It is a structural schematic diagram of the fixed block in the first embodiment;

[0027] Figure 7 is a top view of the first embodiment;

[0028] Figure 8 Figure 7 Sectional view of AA in the middle;

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the second embodiment.

[0030] Explanation of the reference numerals: 1-clamp body, 11-fixed handle, 12-movable handle, 121-connecting rod body, 13-fixed clamp rod, 131-slot hole, 132-collection hole, 14-sliding push rod, 15-movable clamp head, 151-connecting body, 152-clamp, 16-elastic top pressure piece, 17-first pin shaft, 18-second pin shaft, 19-third pin shaft, 110-fourth pin shaft, 2-positioning and attraction assembly, 21-guide block, 211-guide hole, 212-mounting through hole, 22-suction nozzle, 221-elastic sleeve section, 222-elastic buffer tube, 23-tube body, 24-fixed block, 241-fixed hole, 25-movable block, 26-connecting rod, 3-slot. DETAILED DESCRIPTION

[0031] The present invention is described in detail below in conjunction with the accompanying drawings:

[0032] Embodiment 1:

[0033] like Figure 1-8 As shown, a cervical lesion tissue biopsy forceps capable of fixing, preventing slipping and accurately positioning is characterized in that it comprises a forceps body 1 and a positioning and attracting assembly 2 mounted on the forceps body 1; the forceps body 1 comprises a fixed handle 11, a movable handle 12, a fixed forceps rod 13, a sliding push rod 14, a movable forceps head 15, and an elastic top pressing member 16;

[0034] The fixed clamp rod 13 is extended in the transverse direction and the transverse rear end is fixedly connected to the upper end of the fixed handle 11. The fixed clamp rod 13 is provided with a slot 131 extending through the fixed clamp rod 13 in the vertical direction at the transverse rear end near the fixed handle 11. The movable handle 12 is located in the transverse front of the fixed handle 11 and below the slot 131. The upper end of the movable handle 12 is fixedly provided with a connecting rod body 121 extending upward in the vertical direction. The connecting rod body 121 is inserted in the slot 131 and passes through the slot 131 upward. The sliding push rod 14 is also extended in the transverse direction. The connecting rod 121 is arranged and connected with the fixed clamp rod 13 in a slidable manner in the transverse direction; the lower end of the connecting rod body 121 is hinged to the fixed clamp rod 13 through a first pin shaft 17 extending in the longitudinal direction, and the upper end of the connecting rod body 121 is hinged to the sliding push rod 14 through a second pin shaft 18 extending in the longitudinal direction. The elastic top pressure piece 16 is pressed between the fixed handle 11 and the lower side of the movable handle 12 to keep the lower side of the fixed handle 11 and the movable handle 12 separated from each other; the transverse front end of the fixed clamp rod 13 is provided with a collection hole 13 extending in the vertical direction and penetrating the fixed clamp rod 13 at a position close to the front end wall. 2. The movable clamp head 15 includes a connecting body 151 and a clamp 152. The connecting body 151 is located at the rear of the collection hole 132 and close to the collection hole 132, and the lower end of the connecting body 151 is hinged to the fixed clamp rod 13 through a third pin shaft 19 extending in the longitudinal direction, and the upper end of the connecting body 151 is hinged to the sliding push rod 14 through a fourth pin shaft 110 extending in the longitudinal direction. The rear end of the clamp 152 is fixedly connected to the upper end of the connecting body 151, and the vertical connection line of the axis of the third pin shaft 19 and the fourth pin shaft 110 is inclined to the clamp 152; when When the fixed handle 11 and the movable handle 12 are not subjected to an external force that causes the lower sides of the two to close together, the clamp 152 is located above the collection hole 132 and the position of the lateral front end of the clamp 152 is higher than the position of the lateral rear end, so that an angle less than 90 degrees is formed between the clamp 152 and the front end of the fixed handle 11; when the fixed handle 11 and the movable handle 12 are subjected to an external force that causes the lower sides of the two to close together and close together, the clamp 152 can be embedded in the collection hole 132 during the process of rotating around the third pin 19, so that the material embedded between the collection hole 132 and the clamp 152 can be sheared;

[0035] The positioning and suction component 2 includes a guide block 21 fixedly connected to the fixed clamp rod 13 and located at the lateral rear of the movable clamp head 15, and one or more suction nozzles 22 arranged on the longitudinal outer side of the movable clamp head 15. The guide block 21 is provided with guide holes 211 whose number is the same as the number of the suction nozzles 22 and whose positions correspond to the number of the suction nozzles 22 and which extend through the guide block 21 in the lateral direction. The positioning and suction component 2 also includes a tube body 23 connected to each corresponding suction nozzle 22 and movably passed through the corresponding guide hole 211 of the guide block 21. The end of the tube body 23 is connected to the negative pressure pump body for providing negative pressure suction to the suction nozzle 22. The positioning and suction component 2 also includes a tube body 23 fixedly connected to the movable The handle 12 and the traction component on the tube body 23 located between the guide block 21 and the fixed handle 11; when the movable handle 12 and the fixed handle 11 are not subjected to an external force that causes the lower side portions of the two to close together, the suction front end opening of the suction nozzle 22 is located in the transverse front end wall of the fixed handle 11; when the fixed handle 11 and the movable handle 12 are subjected to an external force that causes the lower side portions of the two to close together and close together, the movable handle 12 can drive the tube body 23 and the suction nozzle 22 thereon to move and drag along the guide direction of the guide hole 211 toward the transverse rear direction through the traction component until the suction front end opening of the suction nozzle 22 is located in the transverse rear side of the transverse front end edge of the collection hole 132.

[0036] Preferably, the height position of the suction nozzle 22 in the vertical direction is located between the angle opening formed by the clamp 152 and the fixed clamp rod 13.

[0037] Preferably, the tube body 23 is an elastic hose, and the traction assembly includes a fixing block 24 fixedly mounted on the movable handle 12 , and the fixing block 24 is fixedly connected to a corresponding portion of the tube body 23 .

[0038] In order to facilitate the disassembly and assembly of the tube body for later disinfection operations, the pliers body 1, the guide block 21 and the fixed block 24 are all made of metal materials, the tube body 23 is made of plastic material, and the suction nozzle 22 is made of rubber material. The fixed block 24 is provided with fixing holes 241, the number of which is the same as the number of the suction nozzles 22 and extending through in the transverse direction. The tube body 23 is tightly fitted with the fixing holes 241 of the fixing block 24, and the sides of the guide holes 211 of the guide block 21 and the fixing holes 241 of the fixing block 24 are both provided with slots 3 for facilitating the disassembly and assembly of the tube body 23 and the guide block 21 or the fixing block 24. The slots 3 extend through in the transverse direction and penetrate the corresponding longitudinal side walls of the guide holes 211 and the guide blocks 21 or penetrate the corresponding longitudinal side walls of the fixing holes 241 and the fixing blocks 24 in the longitudinal direction, and the arc of the notch of the slot 3 relative to the center of the corresponding guide hole 211 or the fixing hole is less than 180 degrees.

[0039] In order to facilitate the stability of adsorption, the number of the suction nozzles 22 is two and they are respectively arranged on both sides of the movable clamp head 15 in the longitudinal direction.

[0040] In order to facilitate the suction buffering of the suction nozzle, the suction nozzle 22 includes an elastic sleeve section 221 fixedly mounted with the corresponding tube body 23 and an elastic buffer tube 222 fixedly arranged at the lateral front end of the corresponding elastic sleeve section 221, and the cross-section of the tube wall of the elastic buffer tube 222 in the axial direction is a corrugated shape with alternating concave and convex arrangements.

[0041] Preferably, the guide block 21 is ellipsoidal, and the central axis of the long axis of the ellipsoid extends in the transverse direction. A mounting through hole 212 is provided in the middle of the guide block 21 and extends through the guide block 21 in a direction parallel to the axial direction of the long axis. The guide block 21 is sleeved on the outer periphery of the fixed clamp rod 13 and the sliding push rod 14 through the mounting through hole 212, and the fixed clamp rod 13 is tightly fitted and fixedly installed with the mounting through hole 212, and the sliding push rod 14 is movably inserted into the mounting through hole 212.

[0042] The working principle and process of this embodiment are as follows: the biopsy forceps are sent to the corresponding part, the position to be collected is found, the position is adsorbed and positioned by the suction nozzle 22, and then the movable handle 12 is manually driven to rotate around the first pin shaft 17 in the direction close to the fixed handle 11. During the rotation process, the movable handle 12 can push the sliding push rod 14 to slide forward relative to the fixed clamp rod 13 through the connecting rod 121 body and the second pin shaft 18. During the movement, the sliding push rod 14 can push the clamp 152 of the movable clamp head 15 to rotate downward around the third pin shaft 19, thereby shearing in the direction close to the collection hole 132. At the same time, when the movable handle 12 rotates around the first pin 17 toward the fixed handle 11, the traction assembly connected between the tube body 23 and the movable handle 12 can drive the tube body 23 and the suction nozzle 22 thereon to move backward along the guide direction of the guide hole 211, so that the suction nozzle 22 can drag the corresponding cervical part to move backward, and gradually send it into the angle opening formed by the clamp 152 and the fixed clamp rod 13, and then the clamp 152 falls to shear and sample. Finally, the force applied by the movable handle 12 is released, and the movable handle is pushed by the elastic top pressure piece 16 to return to the 12th position, and each component is reset in turn under the drive of the movable handle to complete the operation.

[0043] Embodiment 2:

[0044] like Fig. 9As shown, the difference between this embodiment and the first embodiment is that the pulling assembly includes a movable block 25 located between the guide block 21 and the movable handle 12 and below the fixed clamp rod 13 and fixedly connected to the tube body 23, and one or more connecting rods 26, one end of which is hinged to the movable block 25 and the other end of which is hinged to the movable handle 12. This embodiment uses the connecting rod 23 to pull the tube body 23 to move forward and backward relative to the guide block 21 (similar to the crank slider mechanism), so that the type of the tube body 23 is not limited to a hose, and other plastic hard tubes or metal tubes are also acceptable.

[0045] Although the present invention is illustrated and described by specific embodiments and their alternatives, it should be understood that various changes and modifications within the spirit and scope of the present invention can be implemented. Therefore, it should be understood that the present invention is not limited in any sense except by the limitations of the attached claims and their equivalents.

Claims

1. A cervical lesion tissue biopsy forceps capable of fixing, preventing slipping and accurately positioning, characterized in that: The invention comprises a clamp body (1) and a positioning and attracting assembly (2) mounted on the clamp body (1); the clamp body (1) comprises a fixed handle (11), a movable handle (12), a fixed clamp rod (13), a sliding push rod (14), a movable clamp head (15), and an elastic pressing member (16); The fixed clamp rod (13) is extended in the transverse direction and its transverse rear end is fixedly connected to the upper end of the fixed handle (11). The fixed clamp rod (13) is provided with a slot hole (131) extending in the vertical direction and penetrating the fixed clamp rod (13) at the transverse rear end close to the fixed handle (11). The movable handle (12) is located in the transverse front of the fixed handle (11) and below the slot hole (131). The upper end of the movable handle (12) is fixedly provided with a connecting rod body (121) extending upward in the vertical direction. The connecting rod body (121) is inserted into the slot hole (131) and passes through the slot hole (131) upward. The sliding push rod (14) is also extended in the transverse direction. The connecting rod body (121) is arranged and connected to the fixed clamp rod (13) in a slidable manner in the transverse direction; the lower end of the connecting rod body (121) is hinged to the fixed clamp rod (13) via a first pin shaft (17) extending in the longitudinal direction; the upper end of the connecting rod body (121) is hinged to the sliding push rod (14) via a second pin shaft (18) extending in the longitudinal direction; the elastic pressing member (16) is pressed between the lower side portions of the fixed handle (11) and the movable handle (12) to keep the lower side portions of the fixed handle (11) and the movable handle (12) in a tendency to separate; the transverse front end of the fixed clamp rod (13) is provided with a collection hole (132) extending in the vertical direction and penetrating the fixed clamp rod (13) at a position close to the front end wall. The movable clamp head (15) comprises a connecting body (151) and a clamp (152), wherein the connecting body (151) is located laterally rearward of the collecting hole (132) and close to the collecting hole (132), and the lower end of the connecting body (151) is hinged to the fixed clamp rod (13) via a third pin shaft (19) extending in the longitudinal direction, and the upper end of the connecting body (151) is hinged to the sliding push rod (14) via a fourth pin shaft (110) extending in the longitudinal direction, and the lateral rear end of the clamp (152) is fixedly connected to the upper end of the connecting body (151), and the vertical connection line of the axis center line of the third pin shaft (19) and the fourth pin shaft (110) and the inclined arrangement of the clamp (152) are perpendicular to each other. When the fixed handle (11) and the movable handle (12) are not subjected to an external force that causes the lower sides of the two to close together, the clamp (152) is located above the collection hole (132) and the position of the lateral front end of the clamp (152) is higher than the position of the lateral rear end so that an angle less than 90 degrees is formed between the clamp (152) and the front end of the fixed handle (11); when the fixed handle (11) and the movable handle (12) are subjected to an external force that causes the lower sides of the two to close together and close together, the clamp (152) can be embedded in the collection hole (132) during the process of rotating around the third pin shaft (19), so that the material embedded between the collection hole (132) and the clamp (152) can be sheared; The positioning and suction component (2) comprises a guide block (21) fixedly connected to the fixed clamp rod (13) and located laterally behind the movable clamp head (15) and one or more suction nozzles (22) arranged on the longitudinal outer side of the movable clamp head (15); the guide block (21) is provided with guide holes (211) whose number is the same as the number of the suction nozzles (22) and whose positions correspond to the number of the suction nozzles (22) and which extend through the guide block (21) in the transverse direction; the positioning and suction component (2) further comprises a tube body (23) connected to each corresponding suction nozzle (22) and movably inserted into the corresponding guide hole (211) of the guide block (21); the end of the tube body (23) is connected to the negative pressure pump body for providing negative pressure suction to the suction nozzle (22); the positioning and suction component (2) further comprises a traction component fixedly connected to the movable handle (12) and to the tube body (23) located between the guide block (21) and the fixed handle (11); when the movable handle (12) and the fixed handle (11) are in contact with each other, the suction nozzles (22) are moved in a direction opposite to the guide hole (211) of the guide block (21); 1) When no external force is applied to close the lower sides of the two, the suction front opening of the suction nozzle (22) is located in the transverse front end wall of the fixed handle (11); when the fixed handle (11) and the movable handle (12) are applied with an external force to close the lower sides of the two and close together, the movable handle (12) can drive the tube body (23) and the suction nozzle (22) thereon to move in the transverse rear direction along the guide direction of the guide hole (211) through the traction assembly to a position where the suction front opening of the suction nozzle (22) is located in the transverse rear side of the transverse front end edge of the collection hole (132); the height position of the suction nozzle (22) in the vertical direction is located between the angle openings formed by the clamp (152) relative to the fixed clamp rod (13); the tube body (23) is an elastic hose, and the traction assembly comprises a fixed block (24) fixedly mounted on the movable handle (12), and the fixed block (24) is fixedly connected to a corresponding portion of the tube body (23).

2. The fixable, anti-slip and accurately positioned cervical lesion tissue biopsy forceps according to claim 1, characterized in that: The clamp body (1), the guide block (21) and the fixed block (24) are all made of metal material, the tube body (23) is made of plastic material, the suction nozzle (22) is made of rubber material, the fixed block (24) is provided with fixing holes (241) the same number as the suction nozzle (22) and extending through in the transverse direction, the tube body (23) and the fixing holes (241) of the fixed block (24) are tightly fitted and installed, the guide hole (211) of the guide block (21) and the fixing hole (24) of the fixed block (24) are The side of the (241) is provided with a slot (3) for facilitating the disassembly and assembly of the tube body (23) and the guide block (21) or the fixing block (24); the slot (3) extends through the guide hole (211) and the guide block (21) in the transverse direction, and passes through the corresponding longitudinal side wall of the guide hole (211) and the guide block (21) or passes through the corresponding longitudinal side wall of the fixing hole (241) and the fixing block (24) in the longitudinal direction; and the arc of the slot opening of the slot (3) relative to the center of the corresponding guide hole (211) or the fixing hole is less than 180 degrees.

3. The fixable, anti-slip and accurately positioned cervical lesion tissue biopsy forceps according to claim 1, characterized in that: The number of the suction nozzles (22) is two and they are arranged on both longitudinal sides of the movable clamp head (15).

4. The fixable, anti-slip and accurately positioned cervical lesion tissue biopsy forceps according to claim 1, characterized in that: The suction nozzle (22) comprises an elastic sleeve section (221) fixedly mounted in cooperation with a corresponding tube body (23), and an elastic buffer tube (222) fixedly arranged at a transverse front end of the corresponding elastic sleeve section (221); the cross section of the tube wall of the elastic buffer tube (222) in the axial direction is in a corrugated shape with concave and convex portions arranged alternately.

5. The fixable, anti-slip and accurately positioned cervical lesion tissue biopsy forceps according to claim 1, characterized in that: The guide block (21) is ellipsoidal in shape, and the central axis of the long axis of the ellipsoid extends in the transverse direction. A mounting through hole (212) is provided in the middle of the guide block (21) and extends through the guide block (21) in a direction parallel to the axial direction of the long axis. The guide block (21) is sleeved on the outer periphery of the fixed clamp rod (13) and the sliding push rod (14) through the mounting through hole (212). The fixed clamp rod (13) is tightly fitted and fixedly installed with the mounting through hole (212), and the sliding push rod (14) is movably inserted into the mounting through hole (212).

6. The fixable, anti-slip and accurately positioned cervical lesion tissue biopsy forceps according to claim 1, characterized in that: The traction assembly comprises a movable block (25) located between the guide block (21) and the movable handle (12), located below the fixed clamp rod (13) and fixedly connected to the tube body (23), and one or more connecting rods (26) having one end hinged to the movable block (25) and the other end hinged to the movable handle (12).

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