CN209499779U - A kind of pulmonary tuberculosis puncture device - Google Patents

Abstract

The utility model discloses a tuberculosis puncture device, which comprises a syringe, a needle, a liquid outlet, a piston, and a push rod. The piston includes a sealing ring, a positioning groove, an outer sealing lip and an inner sealing lip. The liquid collection bottle connected with the catheter tube is provided with a liquid inlet one-way valve between the syringe and the needle seat, and the side wall of the front end of the syringe is provided with an exhaust hole, and an exhaust one-way valve is installed on the exhaust hole. In the utility model, when the cystic fluid is thick and difficult to extract or many samples are needed, a syringe can be used to continuously extract the cystic fluid, thereby preventing backflow of the cystic fluid and ensuring good sealing performance. The structure of the baffle plate is simple, and the processing is convenient. It is no longer necessary to perform multiple anesthesia punctures, and is highly practical. Parts such as baffles are set up, and the depth of the needle can be determined by adjusting the adjustment device, thereby reducing detection errors.

Description

A kind of pulmonary tuberculosis puncture device

technical field

The utility model relates to a medical device, in particular to a tuberculosis puncture device.

Background technique

Tuberculosis is a chronic infectious disease caused by Mycobacterium tuberculosis, which can affect multiple organs of the body, but pulmonary tuberculosis is the most common. Excrement patients are the source of social infection. After the human body is infected with tuberculosis, the disease does not necessarily occur, and the disease only begins when the resistance is low. The pathological features of this disease are tuberculous nodules and caseous necrosis, which are easy to form cavities. Except for a few cases that can be acute onset, most of them are clinically chronic. There are often systemic symptoms such as low-grade fever and fatigue, and respiratory system manifestations such as cough and hemoptysis. The puncture of pulmonary tuberculosis is an important means of diagnosing pulmonary tuberculosis. At present, clinically, the puncture needle is mainly inserted into the tuberculosis with a syringe, and a small amount of tissue is extracted for inspection and tuberculosis culture. Personnel increase the difficulty of work, and in order to ensure the sealing of existing syringes, a sealing ring is fixed at the front end of the push rod, and there is a very large frictional resistance between the sealing ring and the inner wall of the syringe, causing the operator to use a lot of force To push the push rod, although some syringes currently adopt the technology of deforming the sealing ring in the process of pushing the push rod, thereby reducing the resistance between the sealing ring and the inner wall of the syringe, but this type of syringe is due to the front surface of the sealing ring and the inner wall of the syringe. The contact area of the supporting part of the sealing ring is very small, so that the sealing cannot be guaranteed during the deformation of the sealing ring, which reduces the sealing reliability.

Utility model content

The purpose of this utility model is to provide a tuberculosis puncture device to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the utility model provides the following technical solutions:

A tuberculosis puncture device, comprising a syringe, the center of the lower end of the syringe is provided with a needle seat, the lower end of the needle seat is equipped with a needle, the inside of the needle communicates with the interior of the syringe, and a liquid outlet hole is opened on the lower side wall of the needle. The inner cavity of the syringe is provided with a piston, the piston is connected with a push rod, and the push rod is connected with a push handle. The piston includes a sealing ring, and at least one ring of positioning grooves is provided on the front end of the sealing ring, and the positioning groove will seal The front end of the ring is divided into an outer sealing lip and an inner sealing lip, wherein the outer diameter of the outer sealing lip is larger than that of the rear sealing ring, and a baffle is provided on the front side of the sealing ring, and the diameter of the baffle is smaller than that of the outer sealing lip. Outer diameter, the rear side of the baffle has a positioning protrusion correspondingly inserted into the positioning groove, the positioning protrusion is located on the inner side of the circumference of the baffle, the outer sealing lip is in contact with the rear side of the baffle, and the outer wall of one side of the syringe is provided with A liquid collection bottle connected by a catheter, a liquid inlet one-way valve is arranged between the syringe and the needle seat, an exhaust hole is arranged on the side wall of the front end of the syringe, and an exhaust one-way valve is installed on the exhaust hole.

As a further solution of the present invention: the axial height of the positioning protrusion is greater than the distance from the inner sealing lip to the bottom of the positioning groove.

As a further solution of the utility model: the rear side of the baffle is provided with a baffle fastening unit coaxially sleeved inside the sealing ring, and the baffle fastening unit is engaged and fixed with the front end of the push rod.

As a further solution of the present invention: the baffle clamping unit includes a clamping cylinder, the front end of the clamping cylinder is integrally connected with the baffle, and the inside of the rear end of the clamping cylinder has a clamp protruding radially inward. Connect the bump.

As a further solution of the present invention: the inner sealing lip is spaced apart from the rear side of the baffle.

As a further solution of the present invention: the lower end of the side wall of the syringe is symmetrically provided with two fixed connecting seats, and a connecting rod is inserted inside the lower end of the fixed connecting seat, and a baffle is connected to the lower end of the connecting rod. A through hole for the needle to pass is opened in the center, and a limit block is arranged above the fixed connection seat, and the limit block is fixedly installed on the outer wall of the syringe, and a locking device is installed on the side wall of the fixed connection seat on the right.

As a further solution of the present utility model: the needle is disassembled and connected to the needle holder.

As a further solution of the present invention: the connecting rod on one side of the adjustment device is also provided with a scale line.

As a further solution of the utility model: an anesthesia device is installed on the upper end of the side wall of the needle, the anesthesia device includes an anesthesia syringe and a liquid outlet tube, the left end of the anesthesia syringe is fixed on the side wall of the needle head, and the liquid outlet tube is arranged on Inside the side wall of the needle, the lower end of the liquid outlet tube is arranged parallel to the oblique opening at the lower end of the needle head, and the upper end of the liquid outlet tube is connected with the anesthesia syringe, and a piston is arranged in the anesthesia syringe, and the piston is sealed and connected with the inner wall of the anesthesia syringe. A piston rod is installed, and a tonic port is opened on the side wall of the anesthesia syringe, and a valve is arranged on the tonic port.

Compared with the prior art, the beneficial effect of the utility model is: the utility model is simple and reasonable in structure, quick and convenient to use, because the side wall of the syringe is connected with a liquid collecting bottle, the extracted cyst fluid is collected in the liquid collecting bottle, when the cyst fluid When it is thick and difficult to extract or more samples are needed, the syringe can be used to continuously extract, because the syringe is equipped with a liquid inlet check valve and an exhaust check valve, which can prevent the backflow of the cyst fluid; and when in use, because the outer sealing lip It can be deformed relative to the inner wall of the syringe, thereby reducing the resistance between the sealing ring and the inner wall of the syringe. The outer sealing lip and the inner wall of the syringe are always in contact to ensure good sealing performance. The baffle has a simple structure and is easy to process. The outer sealing lip and the baffle The abutment of the plates ensures that the sealing ring is mainly deformed radially, thereby ensuring the reliability of the seal; an anesthesia device is provided to push the anesthetic to the patient's wound to relieve the patient's pain when the lung tissue is punctured, and the anesthesia and lung tissue extraction are carried out successively , it is no longer necessary to perform multiple anesthesia punctures, and is highly practical. The baffle and other components are set, and the depth of the needle can be determined by adjusting the adjustment device, thereby reducing the detection error.

Description of drawings

Fig. 1 is a structural schematic diagram of a tuberculosis puncture device.

Fig. 2 is a schematic structural view of the piston in the tuberculosis puncture device.

Fig. 3 is a schematic structural diagram of the sealing ring in Fig. 2 .

FIG. 4 is a schematic structural diagram of the baffle plate and the clamping cylinder in FIG. 2 .

In the figure: 1-syringe, 2-needle seat, 3-needle, 4-liquid outlet, 5-inlet check valve, 6-piston, 61-sealing ring, 611-positioning groove, 612-outer sealing lip , 613-Inner sealing lip, 614-Support protrusion, 62-Clamping cylinder, 621-Clamping protrusion, 63-Baffle, 7-Exhaust one-way valve, 8-Exhaust hole, 9-Push rod , 10-push handle, 11-liquid collection bottle, 12-catheter, 13-fixed connection seat, 14-connecting rod, 15-baffle, 16-limiting block, 17-locking device, 18-adjusting device , 19- scale line, 20- anesthesia device, 21- anesthesia syringe, 22- liquid outlet tube, 23- tonic port, 24- piston rod, 25- piston.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. 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.

Please refer to Figures 1 to 4. In an embodiment of the present invention, a tuberculosis puncture device includes a syringe 1, a needle seat 2 is provided at the center of the lower end of the syringe 1, and a needle 3 is installed at the lower end of the needle seat 2. The interior communicates with the interior of the syringe 1, a liquid outlet hole 4 is opened on the lower side wall of the needle 3, a piston 6 is arranged in the inner cavity of the syringe 1, the piston 6 is connected with a push rod 9, and the push rod 9 is connected with a push handle 10. The piston 6 includes a sealing ring 61, at least one positioning groove 611 is provided on the front end surface of the sealing ring 61, and the positioning groove 611 divides the front end of the sealing ring 61 into an outer sealing lip 612 and an inner sealing lip 613, The outer diameter of the outer sealing lip 612 is greater than the outer diameter of the rear sealing ring 61, so that the outside of the circumference of the outer sealing lip 612 is in contact with the inner wall of the syringe 1, and the rear side of the sealing ring 61 forms a space for accommodating the deformation of the sealing ring 61. The front side of baffle plate 61 is provided with baffle plate 63, and the diameter of baffle plate 63 is smaller than the outer diameter of outer sealing lip 612, and the rear side of baffle plate 63 has the positioning projection 631 that is inserted in the positioning groove 611 correspondingly, and positioning projection 631 is positioned at the stopper. The inner side of the circumference of the plate 63 overcomes the current problem that the positioning protrusions are arranged on the edge of the baffle, which causes the outer side of the front end of the sealing ring to be easily deformed in the axial direction, and the sealing is not reliable. The outer sealing lip 612 is in contact with the rear side of the baffle 63; The outer wall of one side of the syringe 1 is provided with a liquid collection bottle 11 connected by a catheter 12, a liquid inlet check valve 5 is provided between the syringe 1 and the needle holder 2, and an exhaust hole is provided on the side wall of the front end of the syringe 1. 8. An exhaust check valve 7 is installed on the exhaust hole 8 .

The axial height of the positioning protrusion 631 is greater than the distance from the inner sealing lip 613 to the bottom of the positioning groove 611 .

The rear side of the baffle 63 is provided with a baffle fastening unit coaxially sleeved inside the sealing ring 61 , and the baffle fastening unit is engaged and fixed with the front end of the push rod 9 . The baffle plate 63 is clamped with the push rod 9 through the baffle plate clamping unit, so that the baffle plate 63 and the push rod 9 can have a certain relative movable space, so that the baffle plate 63 can squeeze the sealing ring 61, so that the outer sealing lip 612 can further Deformation occurs, which reduces drag and improves sealing. Moreover, the baffle plate 63 is fixed by clamping, which is convenient for connection.

The baffle clamping unit includes a clamping cylinder 62 , the front end of the clamping cylinder 62 is integrally fixedly connected with the baffle 63 , and the inside of the rear end of the clamping cylinder 62 has a clamping protrusion 621 protruding radially inward. The clamping cylinder 62 and the baffle 63 are integrally constructed, with a simple structure and convenient installation. Of course, the clamping cylinder 62 can also be connected to the baffle 63 by other connection methods such as screw thread or clamping.

The inner sealing lip 613 is spaced apart from the rear side of the baffle 63 , so that the baffle 63 and the sealing ring 61 are relatively squeezed, so that the baffle 63 pushes the outer sealing lip 612 to deform.

The lower end of the side wall of the injector 1 is symmetrically provided with two fixed connecting seats 13, and a connecting rod 14 is inserted inside the lower end of the fixed connecting seat 13, and the lower end of the connecting rod 14 is connected with a baffle 15, and the center of the baffle 15 is opened. There is a through hole for the needle 3 to pass through, and a stop block 16 is arranged above the fixed connection seat 13, and the stop block 16 is fixedly installed on the outer side wall of the syringe 1, and the side wall of the fixed connection seat 13 on the right side is installed with The locking device 17, the locking device 17 can be used to position the connecting rod 14 to prevent the connecting rod 14 from sliding freely in the fixed connecting seat 13, and an adjusting device 18 is installed on the side wall of the fixed connecting seat 13 on the left , the adjusting device 18 can be used to adjust the position of the connecting rod 14, so that the baffle plate 15 is located in a proper position.

The needle 3 is disconnected from the needle holder 2 .

A scale line 19 is also provided on the connecting rod 14 on one side of the adjusting device 18 .

The upper end of the side wall of the needle 3 is equipped with an anesthesia device 20, the anesthesia device 20 includes an anesthesia syringe 21 and a liquid outlet tube 22, the left end of the anesthesia syringe 21 is fixed on the side wall of the needle head 3, and the liquid outlet tube 22 is arranged on the needle head Inside the side wall of 3, the lower end of the liquid outlet pipe 22 is arranged parallel to the oblique opening of the lower end of the needle 3, and the upper end of the liquid outlet pipe 22 is connected with the anesthesia syringe 21, and a piston 25 is arranged in the anesthesia syringe 21, and the piston 25 is connected to the anesthesia syringe. The inner wall of 21 is sealed and connected, and a piston rod 24 is installed on the piston 25. A tonic opening 23 is opened on the side wall of the anesthesia syringe 21, and a valve is provided on the tonic opening 23.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to be included in the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (1)

1. A tuberculosis puncture device, comprising a syringe (1), is characterized in that, the center of the lower end of the syringe (1) is provided with a needle holder (2), and the lower end of the needle holder (2) is equipped with a needle (3), the needle The inside of (3) communicates with the inside of the syringe (1), and the lower side wall of the needle (3) is provided with a liquid outlet (4), and the inner cavity of the syringe (1) is provided with a piston (6). (6) is connected with push rod (9), and push rod (9) is connected with push handle (10), and described piston (6) comprises sealing ring (61), and the front end face of sealing ring (61) is provided with at least one Ring positioning groove (611), the positioning groove (611) divides the front end of the sealing ring (61) into an outer sealing lip (612) and an inner sealing lip (613), wherein the outer diameter of the outer sealing lip (612) is larger than that of the rear The outer diameter of the side sealing ring (61), the front side of the sealing ring (61) is provided with a baffle (63), the diameter of the baffle (63) is smaller than the outer diameter of the outer sealing lip (612), and the baffle (63) ) has a positioning protrusion (631) correspondingly inserted into the positioning groove (611), the positioning protrusion (631) is located on the inside of the circumference of the baffle (63), and the outer sealing lip (612) and the baffle (63) The rear side is abutted, and the outer wall of the syringe (1) is provided with a liquid collection bottle (11) connected by a catheter (12), and a liquid inlet sheet is provided between the syringe (1) and the needle seat (2). To the valve (5), the side wall of the front end of the syringe (1) is provided with an exhaust hole (8), and an exhaust check valve (7) is installed on the exhaust hole (8); The axial height of the positioning protrusion (631) is greater than the distance from the inner sealing lip (613) to the bottom of the positioning groove (611); The rear side of the baffle (63) is provided with a baffle fastening unit coaxially sleeved on the inner side of the sealing ring (61), and the baffle fastening unit is engaged and fixed with the front end of the push rod (9); The baffle fastening unit includes a clamping cylinder (62), the front end of the clamping cylinder (62) is integrally fixedly connected with the baffle (63), and the inside of the rear end of the clamping cylinder (62) has a radially inward Protruding snap-in protrusion (621); The inner sealing lip (613) is spaced apart from the rear side of the baffle (63); The lower end of the side wall of the syringe (1) is symmetrically provided with two fixed connecting seats (13), and a connecting rod (14) is inserted inside the lower end of the fixed connecting seat (13), and the lower end of the connecting rod (14) is connected with a The baffle plate (15), the center of the baffle plate (15) is provided with a through hole for the needle (3) to pass through, the top of the fixed connection seat (13) is provided with a limit block (16), the limit block (16) Fixedly installed on the outer wall of the syringe (1), a locking device (17) is installed on the side wall of the fixed connection seat (13) on the right side, and an adjustment device is installed on the side wall of the fixed connection seat (13) on the left side (18); The needle (3) is disassembled and connected with the needle seat (2); The connecting rod (14) on one side of the adjusting device (18) is also provided with a scale line (19); The side wall upper end of described needle (3) is equipped with anesthesia device (20), and anesthesia device (20) comprises anesthesia syringe (21) and liquid outlet pipe (22), and the left end of anesthesia syringe (21) is fixed on needle ( 3) on the side wall, the liquid outlet pipe (22) is arranged inside the side wall of the needle (3), the lower end of the liquid outlet pipe (22) is arranged parallel to the oblique opening of the lower end of the needle (3), and the upper end of the liquid outlet pipe (22) is parallel to the lower end of the needle (3). The anesthesia syringe (21) is connected, and a piston (25) is arranged in the anesthesia syringe (21), and the piston (25) is sealed and connected with the anesthesia syringe (21) inner wall, and a piston rod (25) is installed on the piston (25). 24), the side wall of the anesthesia syringe (21) is provided with an invigorating opening (23), and the invigorating opening (23) is provided with a valve.