CN209474678U - needle biopsy suction device - Google Patents

Abstract

The suction device for puncture biopsy includes a tube body, a puncture needle, a piston rod, a rubber piston sleeve, a piston driving rod and a gear part. On the needle connecting tube, the rubber piston sleeve is set on the front end of the piston rod, the gear part is rotatably installed on the tube body, the piston rod is provided with piston rod teeth, the piston driving rod is provided with piston driving rod teeth, and the piston driving rod is inserted There is a spring positioning post in the hole, a spring positioning post socket is provided on the piston driving rod, a piston driving rod reset support spring is set on the spring positioning post, a spring fixing groove is provided on the piston driving rod, and the spring positioning post is inserted In the socket of the spring positioning column, the upper end of the piston drive rod return support spring is clamped in the spring fixing groove. If you need to absorb cells for the second time, you only need to release the piston drive rod, and the piston drive rod resets the support spring on the piston drive rod. Under the action of reset and move up, it is easy to use.

Description

needle biopsy suction device

technical field

The utility model relates to a puncture biopsy suction device for extracting superficial tissue organ cells.

Background technique

With the continuous development of the medical level, ultrasound-guided fine-needle aspiration cytology biopsy has been more and more used in daily medical treatment in recent years. The puncture needle is an indispensable tool. This method is applied under ultrasonic monitoring. The target cells of superficial organ tissues are obtained through the puncture needle for pathological diagnosis, such as breast, thyroid, lymph nodes, etc. It is the best method for early diagnosis of benign and malignant targets. The quick, easy and safe way.

Compared with the 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 viscous. For lesions with soft texture, cells from the lesion can be easily extracted through a puncture needle. However, for tough, hard, or viscous cells, it is difficult to extract cells with diagnostic value by relying solely on the puncture needle, resulting in unsatisfactory puncture results.

However, through the puncture biopsy suction device, it is possible to extract tough, hard, or viscous cells. When in use, the puncture needle is inserted into the superficial tissue and organ cells, and then the piston is pressed to drive the rod. The piston drives the rod teeth to move down and drives the gear part to rotate, the gear part rotates to drive the piston rod teeth and the piston rod to move up, the piston rod moves up to drive the rubber piston sleeve to move up, and the rubber piston sleeve moves up to generate negative pressure in the puncture needle, so that The superficial tissue and organ cells are sucked into the puncture needle, so that the superficial tissue and organ cells can be extracted with one hand, and the operator can carry out negative pressure suction while lifting and inserting the puncture needle, and the action is precise. This structure also has the following shortcomings : After the piston drives the rod down, it cannot move up and down. If the cells are not extracted by pressing the piston drive rod once, the second extraction of cells requires the piston drive rod to be lifted and reset. It is difficult to drive the piston in the case of one-handed operation. Pull the lever to reset.

Contents of the invention

Aiming at the above-mentioned technical problems, the utility model provides an easy-to-use puncture biopsy suction device that can reset and move up after the rod is moved down by pressing the piston.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions: a puncture biopsy suction device, including a tube body, a puncture needle, a piston rod, a rubber piston sleeve, a piston driving rod and a gear part, the front end of the tube body is closed and a tube The front end of the body has a through hole, the rear end of the pipe body has a hole, and a baffle is arranged in the body of the pipe, and the space in the pipe body is divided into a piston rod jack and a piston drive rod jack by the space of the baffle. The front end is provided with a needle connecting tube, 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 in the piston rod socket, and the rubber piston The sleeve is set at the front end of the piston rod, the rubber piston sleeve is in contact with the inner wall of the piston rod socket, the piston drive rod is inserted in the piston drive rod socket, and the gear part is rotatably installed above the partition On the pipe body, the piston rod is provided with piston rod teeth, the piston driving rod is provided with piston driving rod teeth, the piston rod teeth are set opposite to the piston driving rod teeth, and the gear part is located on the piston rod teeth Between the tooth of the piston driving rod and the tooth of the piston driving rod, both the teeth of the piston rod and the tooth of the piston driving rod are engaged with the gear part. hole, the spring positioning post is set with a piston driving rod reset support spring, and the piston driving rod is provided with a circle of spring fixing grooves outside the spring positioning post jack, and the spring positioning post is inserted in the spring positioning In the post socket, the upper end of the piston drives the rod reset support spring to be clamped in the spring fixing groove.

The beneficial effect of the puncture biopsy suction device provided by the utility model is: when in use, press the piston to drive the rod, the piston drives the rod to move down, the spring positioning post continues to be inserted into the spring positioning post jack, the piston drives the rod to return to the supporting spring and is compressed, The piston on the rod drives the rod teeth to move down to drive the gear parts to rotate. The gear parts rotate to drive the piston rod teeth and the piston rod to move up. The piston rod moves up to drive the rubber piston sleeve to move up. Negative pressure absorbs cells. If you need to absorb cells for the second time, you only need to release the piston driving rod, and the piston driving rod resets and moves up under the action of the piston driving rod reset support spring, which makes it easy to use and realizes one-handed secondary operation to extract cells.

Further, the gear part includes a gear shaft, a gear, a left set screw and a right set screw, the tube body is provided with a gear shaft installation hole, and the gear shaft installation hole is provided with a gear shaft installation hole thread, and the The gear shaft is provided with a gear shaft thread, the gear shaft is provided with a gear shaft left threaded hole and a gear shaft right threaded hole, the gear shaft is installed on the gear shaft mounting hole, and the gear shaft mounting hole thread is connected with the gear shaft The threads are matched, the gear is rotatably set on the gear shaft, the left positioning screw is installed on the left threaded hole of the gear shaft, the right positioning screw is installed on the right threaded hole of the gear shaft, and the gear is located on the left Between the set screw and the right set screw, the beneficial effect is that this structure makes the gear installation more convenient, realizes the left and right positioning of the gear, and prevents the gear from being stuck against the inner wall of the pipe body.

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

Description of drawings

Fig. 1 is one of the structural representations of the biopsy suction device provided by the utility model;

Fig. 2 is the second structural diagram of the puncture biopsy suction device provided by the utility model;

Fig. 3 is the third structural schematic diagram of the biopsy suction device provided by the utility model;

Fig. 4 is the fourth schematic structural view of the biopsy suction device provided by the utility model;

Fig. 5 is one of the cross-sectional structural schematic diagrams of the biopsy suction device provided by the utility model;

Fig. 6 is the second schematic diagram of the sectional structure of the biopsy suction device provided by the utility model;

Fig. 7 is one of the schematic diagrams of the decomposition structure of the biopsy suction device provided by the present invention;

Fig. 8 is the second schematic diagram of the decomposition structure of the biopsy suction device provided by the utility model;

Fig. 9 is a schematic diagram of an exploded dissection structure of the puncture biopsy suction device provided by the present invention;

Fig. 10 is a schematic structural view of the gear components of the needle biopsy suction device provided by the present invention.

Detailed ways

As shown in Figure 1 to Figure 10, the embodiment of the puncture biopsy suction device provided by the present invention includes a tubular body 1, a puncture needle 2, a piston rod 3, a rubber piston sleeve 4, a piston driving rod 5 and a gear part 6, the The front end of the tube body 1 is closed and provided with a through hole at the front end of the tube body, the rear end of the tube body 1 is opened, and a partition 7 is arranged inside the tube body 1, and the space in the tube body 1 is separated by the partition plate 7 A piston rod jack 8 and a piston driving rod jack 9 are formed. 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 communicates with the piston rod socket 8, the piston rod 3 is inserted in the piston rod socket 8, the rubber piston sleeve 4 is set on the front end of the piston rod 3, and the rubber piston sleeve 4 is connected to the piston rod socket 8, the inner wall is abutted and matched, the piston driving rod 5 is inserted in the piston driving rod socket 9, the gear part 6 is rotatably installed on the pipe body 1 above the partition plate 7, and the piston rod 3 is provided with Piston rod tooth 11 is arranged, described piston driving rod 5 is provided with piston driving rod tooth 12, and described piston rod tooth 11 and piston driving rod tooth 12 are oppositely set, and described gear part 6 is positioned at piston rod tooth 11 and piston driving rod Between the teeth 12, the piston rod teeth 11 and the piston drive rod teeth 12 are all meshed with the gear part 6, the piston drive rod jack 9 is provided with a spring positioning column 13, and the piston drive rod 5 is provided with a spring The positioning post jack 14, the spring positioning post 13 is covered with a piston driving rod reset support spring 15, and the piston driving rod 5 is provided with a circle of spring fixing grooves 16 outside the spring positioning post jack 14. The spring positioning column 13 is inserted in the spring positioning column jack 14, and the upper end of the piston driving rod reset support spring 15 is clamped in the spring fixing groove 16, wherein the pipe body 1, the dividing plate 7, and the spring positioning column 13 And the needle connecting tube is integrally formed by injection molding.

The gear part 6 includes a gear shaft 17, a gear 18, a left set screw 19 and a right set screw 20. The tube body 1 is provided with a gear shaft mounting hole 21, and the gear shaft mounting hole 21 is provided with a gear shaft mounting hole. Hole threads, the gear shaft 17 is provided with a gear shaft thread, the gear shaft 17 is provided with a gear shaft left threaded hole 22 and a gear shaft right threaded hole 23, and the gear shaft 17 is installed on the gear shaft mounting hole 21 , the gear shaft mounting hole thread is matched with the gear shaft thread, the gear 18 is rotatably sleeved on the gear shaft 17, the left positioning screw 19 is installed on the left threaded hole 22 of the gear shaft, and the right positioning The screw 20 is installed on the right threaded hole 23 of the gear shaft, and the gear 18 is located between the left set screw 19 and the right set screw 20 .

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, which can be implemented in different and alternative forms. The drawings are not necessarily drawn to scale. Therefore, specific structural and functional details disclosed herein are not to be interpreted in limiting senses, but merely as a representative basis for teaching one skilled in the art to employ and practice the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Claims (2)

1. aspiration biopsy suction device, including tube body (1), piercing needle (2), piston rod (3), rubber piston set (4), piston band Tube body front end through-hole, tube body (1) rear end are closed and offered in lever (5) and geared parts (6), tube body (1) front end Aperture, the tube body (1) is interior to be equipped with partition (7), and the space in tube body (1) is separated into piston bar jack (8) by the partition (7) Syringe needle connecting tube (10) are equipped with the front end of piston driving bar jack (9), the tube body (1), the piercing needle (2) is mounted on In syringe needle connecting tube (10), the piercing needle (2), syringe needle connecting tube (10) and piston bar jack (8) are communicated, the piston Bar (3) is plugged in piston bar jack (8), and the rubber piston set (4) is set in the front end of piston rod (3), and the rubber is living Plug sleeve (4) is contacted with piston bar jack (8) inner wall, and the piston driving bar (5) is plugged in piston driving bar jack (9) Interior, the geared parts (6) are rotatably mounted on the tube body (1) above partition (7), and the piston rod (3), which is equipped with, to be lived Stopper rod tooth (11), the piston driving bar (5) are equipped with piston driving bar tooth (12), the piston rod tooth (11) and piston driving Bar tooth (12) is oppositely arranged, and the geared parts (6) are located between piston rod tooth (11) and piston driving bar tooth (12), the work Stopper rod tooth (11) is engaged with geared parts (6) with piston driving bar tooth (12), it is characterised in that: the piston driving bar jack (9) spring retention posts (13) are equipped in, the piston driving bar (5) is equipped with spring retention posts jack (14), and the spring is fixed It is arranged with piston driving bar on position column (13) and resets support spring (15), the piston driving bar (5) is equipped with a circle and is located at bullet The spring fixing groove (16) of spring positioning column jack (14) outside, the spring retention posts (13) are plugged in spring retention posts jack (14) in, the upper end that the piston driving bar resets support spring (15) is fastened in spring fixing groove (16).

2. aspiration biopsy suction device according to claim 1, it is characterised in that: the geared parts (6) include gear Axis (17), gear (18), left positioning screw (19) and right positioning screw (20), the tube body (1) are equipped with gear shaft mounting hole (21), the gear shaft mounting hole (21) is equipped with gear shaft mounting hole screw thread, and the gear shaft (17) is equipped with gear shaft spiral shell Line, the gear shaft (17) are equipped with gear shaft left-hand thread hole (22) and gear shaft right-hand thread hole (23), the gear shaft (17) It is mounted on gear shaft mounting hole (21), the gear shaft mounting hole screw thread is matched with gear axle thread, the gear (18) It is rotatably set on gear shaft (17), the left positioning screw (19) is mounted on gear shaft left-hand thread hole (22), described Right positioning screw (20) is mounted on gear shaft right-hand thread hole (23), and the gear (18) is located at left positioning screw (19) and the right side is fixed Between position screw (20).