Biopsy forceps with puncture function

Abstract

The utility model relates to the field of medical instruments, in particular to biopsy forceps with a puncture function, which comprise a handle, a rotating drum, a knob, a sampling mechanism and a steering mechanism, a hose is mounted at one end of the handle, and the steering mechanism comprises a fixing sleeve, a connecting component and a plurality of positioning components. The sampling mechanism comprises a moving block, a guide wire, a lifting assembly, a clamping assembly and two forceps heads, a plurality of cutting knives are arranged on the sides, close to each other, of the two forceps heads, and each cutting knife is obliquely arranged, so that a plurality of tissue samples can be cut off at the same time when sample tissues are sampled, and the sampling efficiency is improved. And each group of tissue samples is positioned between the upper and lower adjacent cutting knives, so that the tissue samples are convenient to store, a plurality of tissue samples can be simultaneously collected at one time, step-by-step batch sampling is not needed, the efficiency is relatively high, and meanwhile, compared with repeated batch sampling in the prior art, the pain degree and the contradiction emotion of a patient can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a living body sampling forceps with a puncture function. Background Technique

[0002] A living body sampling forceps is a medical consumable, mainly used for clamping living tissue samples such as digestive tract living tissues under an endoscope for pathological analysis.

[0003] The existing Chinese invention patent with the publication number of CN113303885A discloses a percutaneous puncture device with a biopsy function, including a sampling outer tube and a sampling inner tube. The tail end of the sampling outer tube has a handle, the sampling inner tube is inserted into the sampling outer tube, the head end of the sampling inner tube is provided with a groove, a hook part is installed at the head end of the groove, a cutting knife and a scraping part are installed on the inner wall of the head end of the sampling outer tube. When the hook part of the sampling inner tube is located inside the sampling outer tube, the scraping part is in contact with the bottom of the groove for scraping the specimen hooked in the groove. When the hook part of the sampling inner tube extends out from the head end of the sampling outer tube and pierces into the specimen and then returns to the sampling outer tube, the scraping part can be rotated and opened.

[0004] The above percutaneous puncture device with a biopsy function has the following deficiencies:

[0005] 1. Although a large amount of specimen tissue can be obtained, it requires repeated operations, with low efficiency. At the same time, repeated operations will also increase the pain level and resistance of the patient;

[0006] 2. It is impossible to adjust the orientation of the hook part as needed, resulting in the inability to sample specimen tissues in different directions as needed.

[0007] In view of the above problems, a living body sampling forceps with a puncture function is now provided. Content of the Utility Model

[0008] The purpose of the utility model is to provide a living body sampling forceps with a puncture function to solve the problems raised in the above background technique.

[0009] To achieve the above purpose, the utility model provides the following technical solutions:

[0010] A living body sampling forceps with a puncture function includes a handle, one end of the handle is installed with a hose, and also includes a rotating cylinder, a knob, a sampling mechanism and a steering mechanism;

[0011] The steering mechanism includes a fixed sleeve, a connecting component and a plurality of positioning components. The fixed sleeve is fixed on the surface of the rotating cylinder, the connecting component is located between the fixed sleeve and the knob, and the plurality of positioning components are symmetrically arranged above and below the fixed sleeve, and each positioning component is located between the rotating cylinder and the handle;

[0012] The sampling mechanism includes a moving block, a guide wire, a lifting assembly, a clamping assembly and two clamping heads. The moving block is slidably arranged inside the end of the hose away from the handle. The two clamping heads are symmetrically arranged at the bottom end of the moving block. The clamping assembly is installed between the moving block and the two clamping heads. The lifting assembly is installed between the knob and the rotating cylinder. A through hole penetrating the guide wire and the handle is provided between the guide wire and the handle. The guide wire slides inside the through hole. One end of the guide wire is connected to the moving block, and the other end of the guide wire is connected to the lifting assembly.

[0013] As a further solution of the utility model: The handle includes an upper cylinder, a lower cylinder and two U-shaped connecting rods. The upper cylinder and the lower cylinder are arranged up and down. The two U-shaped connecting rods are symmetrically arranged. Both ends of each U-shaped connecting rod are respectively connected to the upper cylinder and the lower cylinder. Annular grooves are provided on the inner walls of the mutually approaching ends of the upper cylinder and the lower cylinder. An annular block is rotatably arranged inside each annular groove. Each annular block is fixed on the surface of the rotating cylinder. The fixed sleeve is located between the upper cylinder and the lower cylinder.

[0014] As a further solution of the utility model: Each positioning component includes a positioning hole, a mounting seat, a first ball, a plug rod, a mounting hole, a first spring and a through hole;

[0015] The mounting hole is opened on the inner wall of the handle. The through hole is opened at the end of the mounting hole away from the rotating cylinder and communicates with the mounting hole. The mounting seat is slidably arranged inside the mounting hole. The plug rod is slidably arranged inside the through hole and one end thereof is fixedly connected to the mounting seat. The first spring is sleeved on the plug rod, and both ends of the first spring are respectively connected to the mounting seat and the mounting hole. The first ball is installed at the end of the mounting seat away from the plug rod. The positioning hole is opened on the surface of the rotating cylinder, and the first ball is clamped inside the positioning hole.

[0016] As a further solution of the utility model: The connecting component includes two telescopic rods and a plurality of jacks. The two telescopic rods are symmetrically installed at the bottom end of the knob. The plurality of jacks are equidistantly opened on the surface of the fixed sleeve close to the knob. The inner diameter of the jack is matched with the outer diameter of the end of the telescopic rod away from the knob.

[0017] As a further solution of the utility model: The lifting assembly includes a lead screw, a sliding sleeve and a guiding component. The sliding sleeve is slidably arranged in the middle of the rotating cylinder. The lead screw is rotatably arranged at the top end of the handle, and the bottom end of the lead screw is inserted into the inside of the sliding sleeve. The lead screw is in threaded cooperation with the sliding sleeve. The top end of the lead screw is fixedly connected to the knob. The guiding component is located between the sliding sleeve and the rotating cylinder.

[0018] As a further solution of the utility model: The guiding component includes two cross plates, two guiding rods and two guiding holes. The two cross plates are symmetrically installed on both sides of the top end of the sliding sleeve. Each guiding rod is fixed to the bottom end of a cross plate. The two guiding holes are symmetrically opened on the rotating cylinder. Each guiding rod slides inside a guiding hole.

[0019] As a further solution of the utility model: The clamping assembly includes two second springs and four hinge rods. Every two hinge rods are symmetrically fixed at the top end of the pliers head. One end of each hinge rod away from the pliers head is hinged to the moving block. Each second spring is located above the two pliers heads, and both ends of each second spring are respectively fixed to two hinge rods on the two pliers heads.

[0020] As a further solution of the utility model: A plurality of cutting knives are equidistantly fixed on one side of the two pliers heads close to each other. Each cutting knife is inclined. Two baffles are symmetrically fixed at one end of each pliers head close to the cutting knife. The two baffles are symmetrically arranged on both sides of the plurality of cutting knives.

[0021] As a further solution of the utility model: An inclined surface is provided on the outer side of one end of each pliers head close to the moving block, and a plurality of second balls are equidistantly arranged on the inclined surface.

[0022] As a further solution of the utility model: A handle for convenient grasping is fixed on the surface of the lower cylinder.

[0023] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0024] 1. For a living body sampling forceps with a puncture function of the utility model, by arranging a plurality of cutting knives on one side of the two pliers heads close to each other, and each cutting knife is inclined, when sampling the specimen tissue, multiple tissue samples can be cut off at the same time, and each group of tissue samples is located between the upper and lower adjacent cutting knives, which is convenient for storage, so that multiple tissue samples can be collected at one time without sampling step by step in batches, with high efficiency. At the same time, compared with the prior art of repeated batch sampling prevention, it can reduce the pain degree and resistance of patients.

[0025] 2. For a living body sampling forceps with a puncture function of the utility model, by setting the lifting assembly, when the lifting assembly drives the guide wire to move downward, the guide wire can drive the two pliers heads to move through the moving block. When the two pliers heads move out of the inside of the hose, under the action of the second spring, the two pliers heads can rotate outwards, which is convenient for clamping the specimen tissue. When the lifting assembly drives the guide wire to move upward, the guide wire can drive the two pliers heads to move into the inside of the hose. At this time, the cutting knife can be used to cut the specimen tissue to realize sampling of the specimen tissue.

[0026] 3. A living body sampling forceps with a puncture function according to the present utility model realizes the connection between the fixed sleeve and the knob by setting a steering mechanism and pulling the telescopic rod to insert the telescopic rod into the jack at a suitable position. When the angle of the two forceps heads needs to be adjusted, by rotating the fixed sleeve, the fixed sleeve can drive the sliding sleeve slidably arranged on the rotating cylinder to rotate, and the sliding sleeve can drive the two forceps heads to rotate through a guide wire, a moving block, etc., so that the tissue at different positions can be sampled as needed to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of the present utility model.

[0028] Figure 2 For the present utility model Figure 1 It is an enlarged schematic structural diagram of part A in the present utility model.

[0029] Figure 3 It is a sectional view of the present utility model.

[0030] Figure 4 For the present utility model Figure 3 It is an enlarged schematic structural diagram of part B in the present utility model.

[0031] Figure 5 For the present utility model Figure 4 It is an enlarged schematic structural diagram of part C in the present utility model.

[0032] Figure 6 It is a partial schematic structural diagram of the sampling mechanism in the present utility model.

[0033] Figure 7 For the present utility model Figure 6 It is an enlarged schematic structural diagram of part D in the present utility model.

[0034] Figure 8 It is a bottom view schematic structural diagram of the present utility model.

[0035] Wherein: 11. Handle; 12. Handlebar; 13. Hose; 14. Upper cylinder; 15. Lower cylinder; 16. Rotating cylinder; 17. Fixed sleeve; 18. Annular groove; 19. Annular block; 20. Positioning hole; 21. Mounting seat; 22. First ball; 23. Insertion rod; 24. Mounting hole; 25. First spring; 26. Perforation; 27. Sliding sleeve; 28. Cross plate; 29. Guide rod; 30. Guide hole; 31. Guide wire; 32. Lead screw; 33. Knob; 34. Telescopic rod; 35. Jack; 36. Moving block; 37. Hinge rod; 38. Second spring; 39. Forceps head; 40. Cutting knife; 41. Baffle; 42. Through hole; 43. Second ball; 44. Inclined plane; 45. U-shaped connecting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only for explaining the present utility model and are not intended to limit the scope of the present utility model.

[0037] The present utility model provides the following preferred embodiments:

[0038] Embodiment 1, as Figures 1 - 8 shown, a living body sampling forceps with a puncture function includes a handle 11, one end of the handle 11 is provided with a hose 13, and the handle 11 and the hose 13 are connected to each other. It also includes a rotating cylinder 16, a knob 33, a sampling mechanism and a steering mechanism;

[0039] The steering mechanism includes a fixed sleeve 17, a connecting component and a plurality of positioning components. The fixed sleeve 17 is fixed on the surface of the rotating cylinder 16. The connecting component is located between the fixed sleeve 17 and the knob 33. The connecting component is used to connect the fixed sleeve 17 and the knob 33. When the fixed sleeve 17 rotates, it can drive the knob 33 to rotate synchronously. The plurality of positioning components are symmetrically arranged above and below the fixed sleeve 17. Each positioning component is located between the rotating cylinder 16 and the handle 11. The positioning component can position the rotated rotating cylinder 16 to prevent it from rotating randomly;

[0040] By pulling the telescopic rod 34 and inserting the telescopic rod 34 into the jack 35 at a suitable position, the connection between the fixed sleeve 17 and the knob 33 is realized, avoiding the situation that when the rotating cylinder 16 drives the sliding sleeve 27 to rotate, due to the threaded fit between the fixed sleeve 17 and the sliding sleeve 27, the position of the sliding sleeve 27 changes. When it is necessary to adjust the angle of the two clamping heads 39, by rotating the fixed sleeve 17, the fixed sleeve 17 can drive the sliding sleeve 27 slidably arranged on the rotating cylinder 16 to rotate. The sliding sleeve 27 can realize the rotation of the two clamping heads 39 through the guide wire 31, the moving block 36, etc., and thus can sample tissues at different positions according to needs to meet the use requirements;

[0041] The sampling mechanism includes a moving block 36, a guide wire 31, a lifting assembly, a clamping assembly, and two clamping heads 39. The moving block 36 is slidably arranged inside the end of the hose 13 away from the handle 12. The two clamping heads 39 are symmetrically arranged at the bottom end of the moving block 36. The clamping assembly is installed between the moving block 36 and the two clamping heads 39. The lifting assembly is installed between the knob 33 and the rotating cylinder 16. A through hole 42 penetrating the guide wire 31 and the handle 11 is provided between the guide wire 31 and the handle 11. The guide wire 31 slides inside the through hole 42. One end of the guide wire 31 is connected to the moving block 36, and the other end of the guide wire 31 is connected to the lifting assembly. By setting the lifting assembly, when the lifting assembly drives the guide wire 31 to move downward, the guide wire 31 can drive the two clamping heads 39 to move through the moving block 36. When the two clamping heads 39 move out of the inside of the hose 13, under the action of the clamping assembly, the two clamping heads 39 can rotate outward, facilitating the clamping of the specimen tissue. When the lifting assembly drives the guide wire 31 to move upward, the guide wire 31 can drive the two clamping heads 39 to move into the inside of the hose 13. At this time, the specimen tissue can be cut by the cutting knife 40, realizing the sampling of the specimen tissue.

[0042] Through the cooperation of the lifting assembly and the clamping assembly, the rapid sampling of the specimen tissue can be realized.

[0043] As Figures 1 - 8 shown, the handle 11 includes an upper cylinder 14, a lower cylinder 15, and two U-shaped connecting rods 45. The upper cylinder 14 and the lower cylinder 15 are arranged up and down. The two U-shaped connecting rods 45 are symmetrically arranged. Both ends of each U-shaped connecting rod 45 are respectively connected to the upper cylinder 14 and the lower cylinder 15. The U-shaped connecting rod 45 can realize the fixed connection between the upper cylinder 14 and the lower cylinder 15. The inner walls of the mutually approaching ends of the upper cylinder 14 and the lower cylinder 15 are both provided with annular grooves 18. A ring block 19 is rotatably arranged inside each annular groove 18. Each ring block 19 is fixed on the surface of the rotating cylinder 16. The fixing sleeve 17 is located between the upper cylinder 14 and the lower cylinder 15. By setting the upper cylinder 14 and the lower cylinder 15, the fixing sleeve 17 can be exposed outside, facilitating the user to rotate the fixing sleeve 17. The rotational connection between the annular groove 18 and the ring block 19 provides a guiding function for the rotating cylinder 16, ensuring the stability of the rotating cylinder 16 during rotation.

[0044] As Figures 1 - 8 shown, each positioning component includes a positioning hole 20, a mounting seat 21, a first ball 22, a plug rod 23, a mounting hole 24, a first spring 25, and a through hole 26;

[0045] The mounting hole 24 is formed in the inner wall of the handle 11. The through hole 26 is formed at one end of the mounting hole 24 away from the rotating cylinder 16 and communicates with the mounting hole 24. The mounting seat 21 is slidably arranged inside the mounting hole 24. The insertion rod 23 is slidably arranged inside the through hole 26 and one end thereof is fixedly connected to the mounting seat 21. The first spring 25 is sleeved on the insertion rod 23, and both ends of the first spring 25 are respectively connected to the mounting seat 21 and the mounting hole 24. The first ball 22 is mounted at one end of the mounting seat 21 away from the insertion rod 23. The positioning hole 20 is formed on the surface of the rotating cylinder 16, and the first ball 22 is clamped inside the positioning hole 20. It should be noted here that the first spring 25 is in a compressed state but not fully compressed;

[0046] By making the first ball 22 clamped inside the positioning hole 20, the positioning of the rotating cylinder 16 can be achieved. When it is necessary to adjust the angle between the two clamping heads 39, by rotating the fixed sleeve 17, the fixed sleeve 17 can drive the rotating cylinder 16 to rotate. At this time, the first ball 22 disengages from the inside of the positioning hole 20. When rotated to the appropriate position, the first ball 22 can be plugged into the positioning hole 20 at the appropriate position again to achieve the positioning effect on the rotating cylinder 16, so that the rotating cylinder 16 can be kept stable and prevent the rotating cylinder 16 from rotating randomly during sampling and affecting the sampling work.

[0047] As Figures 1 - 8 shown, the connecting component includes two telescopic rods 34 and a plurality of jacks 35. The two telescopic rods 34 are symmetrically mounted at the bottom end of the knob 33. The plurality of jacks 35 are equidistantly formed on the surface of the fixed sleeve 17 close to the knob 33. The inner diameter of the jack 35 matches the outer diameter of the end of the telescopic rod 34 away from the knob 33. Specifically, the telescopic rod 34 includes a fixed rod and a movable rod. The fixed rod is fixed at the bottom end of the knob 33. The movable rod is slidably inserted into the inside of the fixed rod. When it is necessary for the fixed sleeve 17 and the knob 33 to rotate synchronously, the movable rod can be pulled so that the bottom end of the movable rod is inserted into the jack 35, and then the fixed sleeve 17 can drive the fixed sleeve 17 to rotate synchronously through the telescopic rod 34 when rotating.

[0048] As Figures 1 - 8 shown, the lifting component includes a lead screw 32, a sliding sleeve 27, and a guiding component. The sliding sleeve 27 is slidably arranged in the middle of the rotating cylinder 16. Specifically, a central hole is formed in the middle of the rotating cylinder 16. The sliding sleeve 27 is slidably arranged inside the central hole. The lead screw 32 is rotatably arranged at the top end of the handle 11, and the bottom end of the lead screw 32 is inserted into the inside of the sliding sleeve 27. The lead screw 32 is in threaded cooperation with the sliding sleeve 27. The top end of the lead screw 32 is fixedly connected to the knob 33. The guiding component is located between the sliding sleeve 27 and the rotating cylinder 16, and the guiding component is used to guide the sliding sleeve 27.

[0049] The guide component includes two transverse plates 28, two guide rods 29 and two guide holes 30. The two transverse plates 28 are symmetrically mounted on both sides of the top of the sliding sleeve 27. Each guide rod 29 is fixed to the bottom end of a transverse plate 28. The two guide holes 30 are symmetrically opened on the rotating drum 16. Each guide rod 29 slides inside a guide hole 30.

[0050] During use, when it is necessary to move the sliding sleeve 27, turn the knob 33, the knob 33 can drive the screw rod 32 to rotate, due to the threaded fit between the screw rod 32 and the sliding sleeve 27, the sliding sleeve 27 slides on the rotating drum 16 under the guidance of the guide rod 29 and the guide hole 30, so when the screw rod 32 rotates, it can drive the sliding sleeve 27 to move in the middle of the rotating drum 16, and then the sliding sleeve 27 can drive the moving block 36 to move through the guide wire 31.

[0051] like Figures 1 - 8 As shown, the clamping assembly includes two second springs 38 and four hinged rods 37, each two hinged rods 37 are symmetrically fixed on the top of the clamp head 39, and one end of each hinged rod 37 away from the clamp head 39 is hinged to the moving block 36, so that the clamp head 39 can rotate, each second spring 38 is located above the two clamp heads 39, and the two ends of each second spring 38 are respectively fixedly connected to the two hinged rods 37 on the two clamp heads 39. It should be noted here that in the initial state, the two clamp heads 39 are located inside the hose 13, and the second springs 38 are in a compressed state at this time;

[0052] When the guide wire 31 drives the moving block 36 to move downward, the moving block 36 drives the clamp head 39 to move, so that the clamp head 39 can be separated from the inside of the hose 13. At this time, the second spring 38 can drive the two clamp heads 39 to rotate, so that the two clamp heads 39 can be opened. At this time, the specimen tissue is located between the two clamp heads 39;

[0053] When sampling is required, the guide wire 31 is driven upward by the lifting assembly, and the guide wire 31 drives the moving block 36 to move upward. At this time, under the restriction of the hose 13, the two clamp heads 39 rotate synchronously to clamp the tissue in the middle. As the clamp heads 39 continue to move, when the clamp heads 39 move into the interior of the hose 13, the cutting knife 40 can be used to cut the specimen tissue to achieve sampling.

[0054] like Figures 1 - 8As shown in the figure, on one side where the two clamping heads 39 approach each other, a plurality of cutting blades 40 are evenly fixed at equal distances. Each cutting blade 40 is inclined. When the two clamping heads 39 approach each other, the cutting blades 40 can be used to cut tissues, facilitating sampling. At the same time, each cutting blade 40 is inclined. Therefore, when sampling the specimen tissue, multiple tissue samples can be cut off simultaneously, and each group of tissue samples is located between two adjacent cutting blades 40 above and below, which is convenient for storage, enabling multiple tissue samples to be collected at one time without sampling step by step in batches, with higher efficiency. At the same time, compared with the prior art of repeated batch sampling, it can reduce the pain level and resistance of patients. At one end of each clamping head 39 close to the cutting blade 40, two baffles 41 are symmetrically fixed. The two baffles 41 are symmetrically arranged on both sides of the plurality of cutting blades 40. The setting of the baffles 41 can limit the specimen tissue after sampling and prevent the specimen from leaking out from the sides of the two cutting blades 40.

[0055] As Figures 1 - 8 shown in the figure, on the outer side of one end of each clamping head 39 close to the moving block 36, there is an inclined surface 44. A plurality of second balls 43 are evenly arranged on the inclined surface 44. When the two clamping heads 39 move towards the inside of the hose 13, the inclined surface 44 facilitates the clamping heads 39 to enter the inside of the hose 13. At the same time, the setting of the second balls 43 can reduce the friction between the clamping heads 39 and the hose 13, facilitating use.

[0056] As Figures 1 - 8 shown in the figure, on the surface of the lower cylinder 15, there is a handle 12 that is convenient to grip. The setting of the handle 12 facilitates the user to grip this in vivo sampling forceps.

[0057] It should be noted at this time that in actual use, this in vivo sampling forceps needs to be used in cooperation with an endoscope. Since there is a guide wire 31 inside the hose 13, the hose 13 can be bent. With the cooperation of the endoscope, the hose 13 can penetrate deep into the body along the natural cavity of the human body for subsequent sampling work.

[0058] The beneficial effects of the present invention are specifically embodied in the above. The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A biopsy forceps with puncture function, comprising a handle (11), one end of which is provided with a hose (13), characterized in that: It also includes a rotating drum (16), a knob (33), a sampling mechanism and a steering mechanism; The steering mechanism comprises a fixing sleeve (17), a connecting assembly and a plurality of positioning assemblies, wherein the fixing sleeve (17) is fixed on the surface of a rotating drum (16), the connecting assembly is located between the fixing sleeve (17) and the knob (33), and the plurality of positioning assemblies are symmetrically arranged above and below the fixing sleeve (17), and each positioning assembly is located between the rotating drum (16) and the handle (11); The sampling mechanism comprises a moving block (36), a guide wire (31), a lifting assembly, a clamping assembly and two clamp heads (39); the moving block (36) is slidably arranged inside one end of the hose (13) away from the handle (12); the two clamp heads (39) are symmetrically arranged at the bottom end of the moving block (36); the clamping assembly is installed between the moving block (36) and the two clamp heads (39); the lifting assembly is installed between the knob (33) and the rotating cylinder (16); a through hole (42) penetrating the guide wire (31) and the handle (11) is provided between the guide wire (31) and the handle (11); the guide wire (31) slides inside the through hole (42); one end of the guide wire (31) is connected to the moving block (36); and the other end of the guide wire (31) is connected to the lifting assembly.

2. The biopsy forceps with puncture function according to claim 1, characterized in that: The handle (11) comprises an upper cylinder (14), a lower cylinder (15) and two U-shaped connecting rods (45). The upper cylinder (14) and the lower cylinder (15) are arranged up and down, and the two U-shaped connecting rods (45) are symmetrically arranged. Both ends of each U-shaped connecting rod (45) are respectively connected to the upper cylinder (14) and the lower cylinder (15). An annular groove (18) is provided on the inner wall of one end of the upper cylinder (14) and the lower cylinder (15) close to each other. An annular block (19) is rotatably arranged inside each annular groove (18). Each annular block (19) is fixed on the surface of the rotating cylinder (16). The fixing sleeve (17) is located between the upper cylinder (14) and the lower cylinder (15).

3. The biopsy forceps with puncture function according to claim 2, characterized in that: Each positioning assembly comprises a positioning hole (20), a mounting seat (21), a first rolling ball (22), an insertion rod (23), a mounting hole (24), a first spring (25) and a through hole (26); The mounting hole (24) is formed on the inner wall of the handle (11); the through hole (26) is formed on one end of the mounting hole (24) away from the rotating cylinder (16) and is communicated with the mounting hole (24); the mounting seat (21) is slidably disposed inside the mounting hole (24); the insertion rod (23) is slidably disposed inside the through hole (26) and one end is fixedly connected to the mounting seat (21); the first spring (25) is sleeved on the insertion rod (23), and the two ends of the first spring (25) are respectively connected to the mounting seat (21) and the mounting hole (24); the first ball (22) is mounted on one end of the mounting seat (21) away from the insertion rod (23); the positioning hole (20) is formed on the surface of the rotating cylinder (16), and the first ball (22) is clamped inside the positioning hole (20).

4. The biopsy forceps with puncture function according to claim 3, characterized in that: The connecting assembly comprises two telescopic rods (34) and a plurality of jacks (35), wherein the two telescopic rods (34) are symmetrically mounted at the bottom end of the knob (33), and the plurality of jacks (35) are equidistantly arranged on the surface of one end of the fixing sleeve (17) close to the knob (33), and the inner diameter of the jacks (35) matches the outer diameter of the end of the telescopic rod (34) away from the knob (33).

5. The biopsy forceps with puncture function according to claim 4, characterized in that: The lifting assembly comprises a screw rod (32), a sliding sleeve (27), and a guide component. The sliding sleeve (27) is slidably arranged in the middle of the rotating cylinder (16). The screw rod (32) is rotatably arranged at the top end of the handle (11), and the bottom end of the screw rod (32) is inserted into the inside of the sliding sleeve (27). The screw rod (32) and the sliding sleeve (27) are threadedly matched. The top end of the screw rod (32) is fixedly connected to the knob (33), and the guide component is located between the sliding sleeve (27) and the rotating cylinder (16).

6. The biopsy forceps with puncture function according to claim 5, characterized in that The guide component includes two transverse plates (28), two guide rods (29) and two guide holes (30). The two transverse plates (28) are symmetrically installed on both sides of the top of the sliding sleeve (27). Each guide rod (29) is fixed at the bottom end of a transverse plate (28). The two guide holes (30) are symmetrically opened on the rotating drum (16), and each guide rod (29) slides inside a guide hole (30).

7. The biopsy forceps with puncture function according to claim 6, characterized in that: The clamping assembly comprises two second springs (38) and four hinged rods (37), each two hinged rods (37) are symmetrically fixed on the top of the clamp head (39), one end of each hinged rod (37) away from the clamp head (39) is hinged to the moving block (36), each second spring (38) is located above the two clamp heads (39), and both ends of each second spring (38) are respectively fixedly connected to the two hinged rods (37) on the two clamp heads (39).

8. The biopsy forceps with puncture function according to claim 7, characterized in that: A plurality of cutting knives (40) are fixed at equal distances on the side of the two pliers heads (39) close to each other, each cutting knives (40) is arranged obliquely, and two baffles (41) are symmetrically fixed on one end of each pliers head (39) close to the cutting knives (40), and the two baffles (41) are symmetrically arranged on both sides of the plurality of cutting knives (40).

9. The biopsy forceps with puncture function according to claim 8, characterized in that: An outer side of one end of each clamp head (39) close to the moving block (36) is provided with an inclined surface (44), and a plurality of second rolling balls (43) are equidistantly arranged on the inclined surface (44).

10. The biopsy forceps with puncture function according to claim 9, characterized in that: A handle (12) for easy gripping is fixed on the surface of the lower cylinder (15).

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