One-handed needle removal and negative pressure suction device for puncture biopsy

Abstract

The one-handed needle core extraction and negative pressure suction device for puncture biopsy comprises a tube body, a hollow puncture needle, a flexible puncture needle core, a piston rod, a rubber piston sleeve, a piston driving rod and a gear component. The partition divides the space in the tube body into a piston rod insertion hole and a piston driving rod insertion hole. The puncture needle is installed on the needle connecting tube. The piston rod comprises piston rod teeth, the piston driving rod comprises piston driving rod teeth, the piston rod is provided with a piston rod needle core insertion hole, the rubber piston sleeve is provided with a rubber piston sleeve needle core insertion hole, the tube body is provided with a tube body needle core insertion hole and a tube body needle core threaded hole, the tube body needle core threaded hole is provided with a tube body needle core fixing screw, and the piston rod is provided with a needle core guide wheel device, so that the puncture needle can be lifted and inserted and the puncture needle core can be extracted while performing negative pressure suction.

Description

Technical Field

[0001] The invention relates to a single-handed needle core extraction and negative pressure suction device for puncture biopsy. Background Art

[0002] With the continuous development of medical technology, ultrasound-guided fine needle aspiration cytology biopsy has been increasingly used in daily medical care in recent years. The puncture needle is an indispensable tool. This method is used under ultrasound monitoring to obtain superficial organ tissue target cells for pathological diagnosis, such as breast, thyroid, lymph nodes, etc. It is the fastest, simplest and safest method for early diagnosis of benign and malignant tumors.

[0003] Compared with previous histological biopsy, it has the advantages of less damage, less risk, and equally reliable results. However, with the development of clinical work, a new problem has emerged: the specific tissue composition of the lesion determines its physical properties, which may be soft, tough, hard, or relatively sticky.

[0004] For soft lesions, it is easy to extract cells from the lesion through the puncture needle. However, for lesions with tough, hard, or sticky textures, it is difficult to extract cells with diagnostic value simply by relying on the puncture needle, resulting in unsatisfactory puncture results.

[0005] If appropriate external negative pressure suction can be combined during the puncture needle insertion and lifting process, the success rate will be greatly improved. However, in actual work, it is very difficult to perform external negative pressure suction during the puncture needle insertion and lifting process. During puncture, the operator usually holds the ultrasound probe in his left hand for real-time monitoring and holds the puncture needle in his right hand for tissue puncture and lifting. At this time, the operator himself cannot achieve negative pressure suction while lifting and inserting the puncture needle. If an assistant holds a syringe at the tail of the puncture needle for auxiliary negative pressure suction, the coordination of the two people will be a big problem, and it is difficult to achieve coordination and consistency of the movement amplitude and frequency. Since the movement amplitude of extracting diseased cells is small and needs to be precise, the risk of puncture will be greatly increased if an assistant assists in negative pressure suction.

[0006] In addition, the puncture needle is a hollow tubular structure and can be equipped with a solid needle core, which just fills the hollow part of the puncture needle. The function of the solid needle core is to prevent tissue debris and other non-target tissues from entering the hollow part of the puncture needle during the puncture process, interfering with the diagnosis results. Previous puncture needles did not have the function of combining appropriate external negative pressure suction to lift and pull out the solid needle core during one-handed operation. Summary of the invention

[0007] In view of the above technical problems, the present invention provides a device for extracting tissue and organ cells, which can be operated by one person with one hand to insert a puncture needle into negative pressure suction and pull out the physical needle core.

[0008] In order to solve the above technical problems, a single-handed needle core extraction and negative pressure suction device for puncture biopsy is provided, which includes a tube body, a hollow puncture needle, a flexible puncture needle core, a piston rod, a rubber piston sleeve, a piston driving rod and a gear component. The front end of the tube body is closed, and the rear end of the tube body is opened. A partition is provided in the tube body, and the partition divides the space in the tube body into a piston rod socket and a piston driving rod socket. The front end of the tube body is provided with a needle connecting tube, and the puncture needle is installed on the needle connecting tube. The puncture needle, the needle connecting tube and the piston rod socket are connected The piston rod is inserted into the piston rod insertion hole, the rubber piston sleeve is sleeved on the front end of the piston rod, the rubber piston sleeve is abutted against the inner wall of the piston rod insertion hole, the piston driving rod is inserted into the piston driving rod insertion hole, the gear component is rotatably installed on the tube body above the partition, the piston rod includes piston rod teeth, the piston driving rod includes piston driving rod teeth, the piston rod teeth and the piston driving rod teeth are arranged opposite to each other, the gear component is located between the piston rod teeth and the piston driving rod teeth, and the piston rod teeth and the piston driving rod teeth are both meshed with the gear component,

[0009] The piston rod is provided with a piston rod needle core jack, the rubber piston sleeve is provided with a rubber piston sleeve needle core jack, the tube body is provided with a tube body needle core jack and a tube body needle core threaded hole, the tube body needle core jack is communicated with the tube body needle core threaded hole, the tube body needle core threaded hole is provided with a tube body needle core fixing screw, the piston rod is provided with a needle core guide wheel device, the puncture needle core cooperates with the needle core guide wheel device, the puncture needle core is inserted into the piston rod needle core jack, the rubber piston sleeve needle core jack, the needle connecting tube and the puncture needle, the rear end of the puncture needle core is inserted into the tube body needle core jack, and the front end of the tube body needle core fixing screw abuts against the puncture needle core.

[0010] That is to say, it is a tubular structure, and the front end is a tubular hollow structure used to connect to the tail of the puncture needle; most of the device is a hollow tubular structure, and there is a longitudinal plane partition plate in the tube, which divides the hollow part in the tube longitudinally into two spaces, one of which leads to the tubular hollow structure at the front end, and has a piston-like structure inside, which fits tightly to the tube wall, and the separation side of the piston has a serrated structure that meshes with the gear fixed on the tube body above the partition plate; in the other side space, there is a rod body driving rod structure with a similar structure, and the separation side also has a serrated structure, which also meshes with the gear. The rod body is pressed down to drive the rod, and through the gear transmission, the piston on the opposite side moves upward, and drives the puncture needle core to move upward, generating negative pressure, and sucking superficial tissue and organ cells into the puncture needle.

[0011] The beneficial effects of the one-handed operation needle core pulling out and negative pressure suction device for puncture biopsy provided by the present invention are as follows: when in use, the puncture needle is inserted into the superficial tissue organ cells, and then the piston driving rod is pressed, the piston driving rod teeth on the piston driving rod move downward to drive the gear component to rotate, the gear component rotates to drive the piston rod teeth and the piston rod to move upward, the piston rod moves upward to drive the rubber piston sleeve, and when the piston rod moves upward, the needle core guide wheel device moves upward, and the needle core guide wheel device drives the puncture needle core to move upward, which is equivalent to a section of the puncture needle core being bent and hung on the needle core guide wheel device. When the puncture needle core leaves the puncture needle, the rubber piston sleeve moves upward to generate negative pressure in the puncture needle, so that the superficial tissue organ cells are sucked into the puncture needle, so that the superficial tissue organ cells can be extracted with one hand.

[0012] That is to say, the operator can lift and insert the puncture needle and pull out the puncture needle core by himself / herself while performing negative pressure suction, and the action is precise, thus avoiding the difficulty of external negative pressure suction during the puncture needle lifting and inserting process, the difficulty of coordinating negative pressure suction with the assistance of an assistant, and the inconsistency of coordination of movement amplitude and frequency, thereby avoiding danger during puncture and preventing tissue debris and other non-target tissues from entering the hollow part of the puncture needle and interfering with the diagnosis result.

[0013] Further, the needle core guide wheel device includes a needle core guide wheel, a needle core guide wheel base, a needle core guide wheel mounting shaft and a needle core guide wheel base fixing screw, the needle core guide wheel base is provided with a left vertical piece of the needle core guide wheel base, a needle core guide wheel base fixing hole and a right vertical piece of the needle core guide wheel base, the needle core guide wheel base fixing hole is located between the needle core guide wheel base fixing hole and the right vertical piece of the needle core guide wheel base, the left vertical piece of the needle core guide wheel base is provided with a needle core guide wheel base left vertical piece threaded hole, the right vertical piece of the needle core guide wheel base is provided with a needle core guide wheel base right vertical piece through hole, the needle core guide wheel is provided with a needle core guide wheel mounting through hole, the needle core guide wheel is located between the needle core guide wheel base fixing hole and the right vertical piece of the needle core guide wheel base, the front end of the needle core guide wheel mounting shaft is provided with a needle core guide wheel mounting shaft thread, The needle core guide wheel mounting shaft is inserted into the right vertical plate through hole of the needle core guide wheel base and the needle core guide wheel mounting through hole, the needle core guide wheel mounting shaft is threadedly screwed into the threaded hole of the left vertical plate of the needle core guide wheel base, the bottom of the needle core guide wheel base is provided with a left positioning column of the needle core guide wheel base and a right positioning column of the needle core guide wheel base, the piston rod is provided with a left positioning column insertion hole of the needle core guide wheel base, a needle core guide wheel base fixing threaded hole and a right positioning column insertion hole of the needle core guide wheel base, the left positioning column of the needle core guide wheel base is inserted into the left positioning column insertion hole of the needle core guide wheel base, the right positioning column of the needle core guide wheel base is inserted into the right positioning column insertion hole of the needle core guide wheel base, the needle core guide wheel base fixing screw is inserted into the needle core guide wheel base fixing hole and screwed into the needle core guide wheel base fixing threaded hole, the needle core guide wheel cooperates with the puncture needle core,

[0014] The beneficial effect is that this structure makes the needle core guide wheel rotate more smoothly, and makes the needle core guide wheel and the puncture needle core have rolling friction, preventing the puncture needle core from having hard friction with the piston rod, making it smoother to pull out the puncture needle core, so that the operator's movements are more stable during operation, and making the installation of the needle core guide wheel device more stable to avoid displacement.

[0015] Further, the piston rod includes a piston rod body, a piston rod tooth plate and a piston rod tooth plate fixing screw, the piston rod body is provided with a piston rod body groove, the piston rod body groove is provided with a piston rod body groove threaded hole, the piston rod tooth plate is provided with a piston rod tooth plate screw hole, the piston rod tooth plate is screwed into the piston rod body groove threaded hole through the piston rod tooth plate fixing screw through the piston rod tooth plate screw hole and installed on the piston rod body groove, the piston rod tooth is arranged on the piston rod tooth plate, the piston driving rod includes a piston driving rod body, a piston driving rod tooth plate and a piston driving rod tooth plate fixing screw, the piston driving rod body is provided with a piston driving rod body groove, the piston driving rod body groove is provided with a piston driving rod body groove threaded hole, and the piston driving rod tooth plate is provided with a piston driving rod tooth plate The screw hole, the piston driving rod tooth plate is passed through the piston driving rod tooth plate fixing screw, and is screwed into the piston driving rod rod body groove threaded hole and installed on the piston driving rod body groove. The piston driving rod tooth is arranged on the piston driving rod tooth plate. The gear component includes a gear shaft and a gear. The tube body is provided with a gear shaft mounting threaded hole, and the gear shaft is provided with a gear shaft thread. The gear shaft is installed on the gear shaft mounting threaded hole, and the gear shaft mounting threaded hole matches the gear shaft thread. The gear is rotatably sleeved on the gear shaft, and the piston rod teeth and the piston driving rod teeth are both meshed with the gear. The piston rod body is provided with a gear left limit strip and a gear right limit strip, and the left side of the gear abuts and matches with the left limit strip of the gear, and the right side of the gear abuts and matches with the right limit strip of the gear.

[0016] The beneficial effect is that this structure makes the cooperation between the piston rod and the piston driving rod stable, prevents the gear from slipping, and can limit the left and right movement of the gear to prevent the gear from being stuck due to friction with the inner wall of the tube body.

[0017] Furthermore, a rubber piston sleeve plug is provided at the front end of the piston rod, a rubber piston sleeve limiting convex ring is provided on the rubber piston sleeve plug, a rubber piston sleeve limiting concave ring is provided on the inner wall of the rubber piston sleeve, the rubber piston sleeve limiting convex ring enters the rubber piston sleeve limiting concave ring, a rubber piston sleeve sealing convex ring is provided on the outer surface of the rubber piston sleeve, and the rubber piston sleeve sealing convex ring is abutted and matched with the inner wall of the piston rod jack.

[0018] The beneficial effect is that this structure makes the rubber piston sleeve more firmly installed, the rubber piston sleeve abuts more closely against the inner wall of the piston rod insertion hole, and the negative pressure effect is better.

[0019] Furthermore, a pressing collar is provided on the piston driving rod, and a left hook and a right hook are provided on both sides of the tube body respectively, wherein the pressing collar is mounted on the piston driving rod by screws, making it more convenient to use.

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the structural schematic diagrams of the one-handed operation needle core removal and negative pressure suction device for puncture biopsy provided by the present invention;

[0022] Figure 2 This is the second structural schematic diagram of the one-handed operation needle core removal and negative pressure suction device for puncture biopsy provided by the present invention;

[0023] Figure 3 yes Figure 2 One of the enlarged structural diagrams;

[0024] Figure 4 yes Figure 2 The second schematic diagram of the enlarged structure;

[0025] Figure 5 This is one of the cross-sectional structural schematic diagrams of the one-handed operation needle core extraction and negative pressure suction device for puncture biopsy provided by the present invention;

[0026] Figure 6 yes Figure 5 One of the enlarged structural diagrams;

[0027] Figure 7 yes Figure 5 The second schematic diagram of the enlarged structure;

[0028] Figure 8 This is the second schematic cross-sectional structure diagram of the one-handed operation needle core extraction and negative pressure suction device for puncture biopsy provided by the present invention;

[0029] Fig. 9 This is one of the schematic diagrams of the exploded structure of the one-handed needle core extraction and negative pressure suction device for puncture biopsy provided by the present invention;

[0030] Fig.10 This is the second schematic diagram of the exploded structure of the one-handed needle core extraction and negative pressure suction device for puncture biopsy provided by the present invention;

[0031] Fig.11It is a structural schematic diagram of a needle core guide wheel device for a single-handed operation of pulling out the needle core and performing negative pressure suction for puncture biopsy provided by the present invention;

[0032] Fig.12 This is one of the schematic diagrams of the structure of some components of the one-handed needle core extraction and negative pressure suction device for puncture biopsy provided by the present invention;

[0033] Fig.13 This is the second schematic diagram of the structure of some components of the one-handed needle core extraction and negative pressure suction device for puncture biopsy provided by the present invention;

[0034] Fig.14 This is the third schematic diagram of the structure of some components of the one-handed needle core extraction and negative pressure suction device for puncture biopsy provided by the present invention;

[0035] Fig.15 It is a schematic diagram of the enlarged structure of some components of the one-handed needle core extraction and negative pressure suction device for puncture biopsy provided by the present invention. DETAILED DESCRIPTION

[0036] As shown in Figure 1 Fig.15 As shown, an embodiment of the one-handed operation needle core extraction and negative pressure suction device for puncture biopsy provided by the present invention comprises a tube body 1, a hollow puncture needle 2, a flexible puncture needle core 2-1, a piston rod 3, a rubber piston sleeve 4, a piston driving rod 5 and a gear component 6. The front end of the tube body 1 is closed, and the rear end of the tube body 1 is opened. A partition 7 is provided in the tube body 1, and the partition 7 divides the space in the tube body 1 into a piston rod insertion hole 8 and a piston driving rod insertion hole 9. The front end of the tube body 1 is provided with a needle connecting tube 10, and the puncture needle 2 is installed on the needle connecting tube 10. The puncture needle 2, the needle connecting tube 10 and the piston rod insertion hole 8 are connected. The piston rod 3 is inserted into the piston rod insertion hole 8, the rubber piston sleeve 4 is sleeved on the front end of the piston rod 3, the rubber piston sleeve 4 is abutted against the inner wall of the piston rod insertion hole 8, the piston driving rod 5 is inserted into the piston driving rod insertion hole 9, the gear component 6 is rotatably installed on the tube body 1 above the partition 7, the piston rod 3 includes a piston rod tooth 11, the piston driving rod 5 includes a piston driving rod tooth 12, the piston rod tooth 11 and the piston driving rod tooth 12 are arranged opposite to each other, the gear component 6 is located between the piston rod tooth 11 and the piston driving rod tooth 12, and the piston rod tooth 11 and the piston driving rod tooth 12 are both meshed with the gear component 6,

[0037] The piston rod 3 is provided with a piston rod needle core plug hole 3-1, the rubber piston sleeve 4 is provided with a rubber piston sleeve needle core plug hole 4-1, the tube body 1 is provided with a tube body needle core plug hole 1-1 and a tube body needle core threaded hole 1-2, the tube body needle core plug hole 1-1 is communicated with the tube body needle core threaded hole 1-2, the tube body needle core threaded hole 1-2 is provided with a tube body needle core fixing screw 1-3, the piston rod 3 is provided with a needle core guide wheel device 3-2, the puncture needle core 2-1 cooperates with the needle core guide wheel device 3-2, the puncture needle core 2-1 is inserted into the piston rod needle core plug hole 3-1, the rubber piston sleeve needle core plug hole 4-1, the needle connecting tube 10 and the puncture needle 2, the rear end of the puncture needle core 2-1 is inserted into the tube body needle core plug hole 1-1, and the front end of the tube body needle core fixing screw 1-3 abuts against the puncture needle core 2-1.

[0038] The needle core guide wheel device 3-2 includes a needle core guide wheel 3-3, a needle core guide wheel base 3-4, a needle core guide wheel mounting shaft 3-5 and a needle core guide wheel base fixing screw 3-6. The needle core guide wheel base 3-4 is provided with a needle core guide wheel base left vertical piece 3-7, a needle core guide wheel base fixing hole 3-8 and a needle core guide wheel base right vertical piece 3-9. The needle core guide wheel base fixing hole 3-8 is located between the needle core guide wheel base fixing hole 3-8 and the needle core guide wheel base right vertical piece 3-9. The needle core guide wheel base left vertical piece 3-7 is provided with a needle core guide wheel base left vertical piece threaded hole 3-10. The needle core guide wheel base right vertical piece 3-9 is provided with a needle core guide wheel base right vertical piece through hole 3-91 The needle core guide wheel 3-3 is provided with a needle core guide wheel mounting through hole 3-11, the needle core guide wheel 3-3 is located between the needle core guide wheel base fixing hole 3-8 and the needle core guide wheel base right vertical piece 3-9, the front end of the needle core guide wheel mounting shaft 3-5 is provided with a needle core guide wheel mounting shaft thread 3-12, the needle core guide wheel mounting shaft 3-5 is inserted into the needle core guide wheel base right vertical piece through hole 3-91 and the needle core guide wheel mounting through hole 3-11, the needle core guide wheel mounting shaft thread 3-12 is screwed into the needle core guide wheel base left vertical piece thread hole 3-10, the bottom of the needle core guide wheel base 3-4 is provided with a needle core guide wheel base left positioning column 3-13 and a needle core guide wheel base right positioning column 3-14,

[0039] The piston rod 3 is provided with a left positioning column insertion hole 3-15 of the needle core guide wheel base, a fixed threaded hole 3-16 of the needle core guide wheel base and a right positioning column insertion hole 3-17 of the needle core guide wheel base. The left positioning column 3-13 of the needle core guide wheel base is inserted into the left positioning column insertion hole 3-15 of the needle core guide wheel base, and the right positioning column 3-14 of the needle core guide wheel base is inserted into the right positioning column insertion hole 3-17 of the needle core guide wheel base. The fixing screw 3-6 of the needle core guide wheel base is inserted into the fixing hole 3-8 of the needle core guide wheel base and screwed into the fixing threaded hole 3-16 of the needle core guide wheel base. The needle core guide wheel 3-3 cooperates with the puncture needle core 2-1.

[0040] The piston rod 3 includes a piston rod body 13, a piston rod tooth plate 14 and a piston rod tooth plate fixing screw 15, the piston rod body 13 is provided with a piston rod body groove 16, the piston rod body groove 16 is provided with a piston rod body groove threaded hole 17, the piston rod tooth plate 14 is provided with a piston rod tooth plate screw hole 18, the piston rod tooth plate 14 is installed on the piston rod body groove 16 through the piston rod tooth plate fixing screw 15 through the piston rod tooth plate screw hole 18 into the piston rod body groove threaded hole 17, the piston rod tooth 11 is arranged on the piston rod tooth plate 14, the piston driving rod 5 includes a piston driving rod body 5-1, a piston driving rod tooth plate 19 and a piston driving rod tooth plate fixing screw 20, the piston driving rod body 5-1 is provided with a piston driving rod body groove 21, the piston driving rod body groove 21 is provided with a piston driving rod body groove threaded hole 22, the piston driving rod tooth plate 19 is provided with a piston driving rod tooth plate screw hole 23, The piston driving rod tooth plate 19 is screwed into the piston driving rod body groove threaded hole 22 through the piston driving rod tooth plate fixing screw 20, and is installed on the piston driving rod body groove 21. The piston driving rod tooth 12 is arranged on the piston driving rod tooth plate 19. The gear component 6 includes a gear shaft 24 and a gear 25. The tube body 1 is provided with a gear shaft mounting threaded hole 26, and the gear shaft 24 is provided with a gear shaft thread 27. The gear shaft 24 is installed on the gear shaft mounting threaded hole 26, and the gear shaft mounting threaded hole 26 cooperates with the gear shaft thread 27. The gear 25 is rotatably sleeved on the gear shaft 24. The piston rod teeth 11 and the piston driving rod teeth 12 are both meshed with the gear 25. The piston rod body 13 is provided with a gear left limit strip 28 and a gear right limit strip 29. The left side of the gear 25 abuts and cooperates with the gear left limit strip 28, and the right side of the gear 25 abuts and cooperates with the gear right limit strip 29.

[0041] A rubber piston sleeve plug 30 is provided at the front end of the piston rod 3, and a rubber piston sleeve limiting convex ring 31 is provided on the rubber piston sleeve plug 30. A rubber piston sleeve limiting concave ring 32 is provided on the inner wall of the rubber piston sleeve 4. The rubber piston sleeve limiting convex ring 31 enters the rubber piston sleeve limiting concave ring 32. A rubber piston sleeve sealing convex ring 33 is provided on the outer surface of the rubber piston sleeve 4. The rubber piston sleeve sealing convex ring 33 abuts against the inner wall of the piston rod jack 8. A pressing ring 34 is provided on the piston driving rod 5. A left hook 35 and a right hook 36 are provided on both sides of the tube body 1 respectively.

[0042] As required, detailed embodiments of the present invention are disclosed herein, but it should be understood that the disclosed embodiments are only exemplary of the present invention, and the present invention may be implemented in different and alternative forms. The drawings are not necessarily drawn to scale. Therefore, the specific structural and functional details disclosed herein should not be understood as having a limiting meaning, but only as a representative basis to teach those skilled in the art to adopt and implement the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present invention.

Claims

1. A single-handed needle core extraction and negative pressure suction device for puncture biopsy, characterized by: The invention comprises a tube body (1), a hollow puncture needle (2), a bendable puncture needle core (2-1), a piston rod (3), a rubber piston sleeve (4), a piston driving rod (5) and a gear component (6); the front end of the tube body (1) is closed, the rear end of the tube body (1) is open, a partition (7) is provided in the tube body (1), the partition (7) divides the space in the tube body (1) into a piston rod insertion hole (8) and a piston driving rod insertion hole (9), the front end of the tube body (1) is provided with a needle connecting tube (10), the puncture needle (2) is mounted on the needle connecting tube (10), the puncture needle (2), the needle connecting tube (10) and the piston rod insertion hole (8) are connected, and the piston rod (3) is inserted into the piston rod insertion hole (8) ), the rubber piston sleeve (4) is sleeved on the front end of the piston rod (3), the rubber piston sleeve (4) is in abutment with the inner wall of the piston rod insertion hole (8), the piston driving rod (5) is inserted into the piston driving rod insertion hole (9), the gear component (6) is rotatably mounted on the tube body (1) above the partition (7), the piston rod (3) includes a piston rod tooth (11), the piston driving rod (5) includes a piston driving rod tooth (12), the piston rod tooth (11) and the piston driving rod tooth (12) are arranged opposite to each other, the gear component (6) is located between the piston rod tooth (11) and the piston driving rod tooth (12), and the piston rod tooth (11) and the piston driving rod tooth (12) are both meshed with the gear component (6), The piston rod (3) is provided with a piston rod needle core insertion hole (3-1), the rubber piston sleeve (4) is provided with a rubber piston sleeve needle core insertion hole (4-1), the tube body (1) is provided with a tube body needle core insertion hole (1-1) and a tube body needle core threaded hole (1-2), the tube body needle core insertion hole (1-1) is communicated with the tube body needle core threaded hole (1-2), the tube body needle core threaded hole (1-2) is provided with a tube body needle core fixing screw (1-3), the piston rod (3) is provided with a needle core guide wheel device (3-2), the puncture needle core (2-1) cooperates with the needle core guide wheel device (3-2), the puncture needle core (2-1) is inserted into the piston rod needle core insertion hole (3-1), the rubber piston sleeve needle core insertion hole (4-1), the needle connecting tube (10) and the puncture needle (2), The rear end of the puncture needle core (2-1) is inserted into the tube body needle core insertion hole (1-1), and the front end of the tube body needle core fixing screw (1-3) abuts against the puncture needle core (2-1). The needle core guide wheel device (3-2) comprises a needle core guide wheel (3-3), a needle core guide wheel base (3-4), a needle core guide wheel mounting shaft (3-5) and a needle core guide wheel base fixing screw (3-6); the needle core guide wheel base (3-4) is provided with a needle core guide wheel base left vertical piece (3-7), a needle core guide wheel base fixing hole (3-8) and a needle core guide wheel base right vertical piece (3-9); the needle core guide wheel base fixing hole (3-8) is located between the needle core guide wheel base fixing hole (3-8) and the needle core guide wheel base right vertical piece (3-9); A left vertical plate (3-7) of the guide wheel base is provided with a left vertical plate threaded hole (3-10) of the needle core guide wheel base, a right vertical plate through hole (3-91) of the needle core guide wheel base is provided on the right vertical plate (3-9) of the needle core guide wheel base, a needle core guide wheel mounting through hole (3-11) is provided on the needle core guide wheel (3-3), the needle core guide wheel (3-3) is located between the needle core guide wheel base fixing hole (3-8) and the right vertical plate (3-9) of the needle core guide wheel base, a needle core guide wheel mounting shaft thread (3-12) is provided at the front end of the needle core guide wheel mounting shaft (3-5), and the needle core guide wheel mounting shaft thread (3-12) is provided on the needle core guide wheel (3-3). The needle core guide wheel installation shaft (3-5) is inserted into the right vertical plate through hole (3-91) of the needle core guide wheel base and the needle core guide wheel installation through hole (3-11), the needle core guide wheel installation shaft thread (3-12) is screwed into the left vertical plate thread hole (3-10) of the needle core guide wheel base, the bottom of the needle core guide wheel base (3-4) is provided with a needle core guide wheel base left positioning column (3-13) and a needle core guide wheel base right positioning column (3-14), the piston rod (3) is provided with a needle core guide wheel base left positioning column insertion hole (3-15), a needle core guide wheel base fixing thread hole (3-16), and a needle core guide wheel base fixing thread hole (3-17). 16) and a right positioning column insertion hole (3-17) of a needle core guide wheel base, the left positioning column (3-13) of the needle core guide wheel base is inserted into the left positioning column insertion hole (3-15) of the needle core guide wheel base, the right positioning column (3-14) of the needle core guide wheel base is inserted into the right positioning column insertion hole (3-17) of the needle core guide wheel base, the fixing screw (3-6) of the needle core guide wheel base is inserted into the fixing hole (3-8) of the needle core guide wheel base and screwed into the fixing threaded hole (3-16) of the needle core guide wheel base, and the needle core guide wheel (3-3) cooperates with the puncture needle core (2-1).

2. The one-handed needle core extraction and negative pressure suction device for puncture biopsy according to claim 1, characterized in that: The piston rod (3) comprises a piston rod body (13), a piston rod tooth plate (14) and a piston rod tooth plate fixing screw (15); the piston rod body (13) is provided with a piston rod body groove (16); the piston rod body groove (16) is provided with a piston rod body groove threaded hole (17); the piston rod tooth plate (14) is provided with a piston rod tooth plate screw hole (18); the piston rod tooth plate (14) is installed on the piston rod body groove (16) by the piston rod tooth plate fixing screw (15) passing through the piston rod tooth plate screw hole (18) and screwed into the piston rod body groove threaded hole (17); the piston rod tooth (11) is arranged on the piston rod tooth plate (14); the piston driving rod (5) comprises a piston driving rod The piston driving rod body (5-1), a piston driving rod tooth plate (19) and a piston driving rod tooth plate fixing screw (20), the piston driving rod body (5-1) is provided with a piston driving rod body groove (21), the piston driving rod body groove (21) is provided with a piston driving rod body groove threaded hole (22), the piston driving rod tooth plate (19) is provided with a piston driving rod tooth plate screw hole (23), the piston driving rod tooth plate (19) is installed on the piston driving rod body groove (21) through the piston driving rod tooth plate fixing screw (20) passing through the piston driving rod tooth plate screw hole (23) and screwed into the piston driving rod body groove threaded hole (22), the piston driving rod tooth (12) is arranged on the piston driving rod tooth plate (19), The gear component (6) comprises a gear shaft (24) and a gear (25); a gear shaft mounting threaded hole (26) is provided on the tube body (1); a gear shaft thread (27) is provided on the gear shaft (24); the gear shaft (24) is mounted on the gear shaft mounting threaded hole (26); the gear shaft mounting threaded hole (26) and the gear shaft thread (27) are matched; the gear (25) is rotatably sleeved on the gear shaft (24); the piston rod teeth (11) and the piston driving rod teeth (12) are both meshed with the gear (25); a gear left limit strip (28) and a gear right limit strip (29) are provided on the piston rod body (13); the left side of the gear (25) is in abutment with the gear left limit strip (28); and the right side of the gear (25) is in abutment with the gear right limit strip (29).

3. The one-handed needle core extraction and negative pressure suction device for puncture biopsy according to claim 1, characterized in that: A rubber piston sleeve plug (30) is provided at the front end of the piston rod (3), a rubber piston sleeve limiting convex ring (31) is provided on the rubber piston sleeve plug (30), a rubber piston sleeve limiting concave ring (32) is provided on the inner wall of the rubber piston sleeve (4), the rubber piston sleeve limiting convex ring (31) enters into the rubber piston sleeve limiting concave ring (32), and a rubber piston sleeve sealing convex ring (33) is provided on the outer surface of the rubber piston sleeve (4), and the rubber piston sleeve sealing convex ring (33) is in abutment with the inner wall of the piston rod insertion hole (8).

4. The one-handed needle core extraction and negative pressure suction device for puncture biopsy according to claim 1, characterized in that: A pressing collar (34) is provided on the piston driving rod (5), and a left hook (35) and a right hook (36) are respectively provided on two sides of the tube body (1).

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