CN215306130U - Kidney puncture biopsy sampling needle - Google Patents

Abstract

The utility model discloses a kidney puncture biopsy sampling needle, which comprises a puncture cylinder, wherein a puncture needle is fixedly arranged at one end of the puncture cylinder, a connector is fixedly arranged at the other end of the puncture cylinder, a negative pressure device is detachably arranged at the connector, a liquid inlet pipe is fixedly arranged at the bottom of the puncture cylinder, a sampling needle penetrates through the interior of the puncture cylinder and the puncture needle and is in sliding connection with the puncture cylinder, the sampling needle extends into a sleeve fixedly arranged on the outer wall of one end of the puncture cylinder, a corrugated pipe is fixedly arranged at the end part of one end of the sampling needle extending into the puncture cylinder, an ejector rod is arranged in the corrugated pipe, one end of the corrugated pipe, which is far away from the sampling needle, is connected with a three-way pipe, and the other two ends of the three-way pipe are respectively connected with the connector and the liquid inlet pipe. The utility model carries out skin and kidney puncture through the puncture needle, provides stable negative pressure through the negative pressure device, is communicated with the negative pressure device while the sampling needle is stabbed, is convenient to extract kidney tissue fluid, and can provide physiological saline for diluting the tissue fluid through the liquid inlet, thereby facilitating the extraction of the sample tissue fluid and the cleaning of the sampling tube.

Description

Kidney puncture biopsy sampling needle

Technical Field

The utility model relates to the field of medical instruments, in particular to a renal biopsy sampling needle.

Background

Due to the wide variety of kidney diseases and the complex etiology and pathogenesis, the clinical manifestations of many kidney diseases are not completely consistent with the histological changes of the kidney. The current clinical noninvasive examinations such as blood examination, urine examination, imaging examination and the like cannot diagnose and accurately evaluate the kidney function and pathological changes at early stage, and great difficulty is brought to the determination of a treatment scheme. Percutaneous nephropuncture biopsy is commonly referred to as nephropuncture or renal biopsy. A thin puncture instrument is used for puncturing the kidney through the skin, and a small amount of kidney tissues are taken out for pathological examination, and a puncture needle with the diameter of about 1.5 mm is generally used for taking out the kidney tissues with the length of about 1 cm for pathological examination.

After the puncture sampling of the existing kidney puncture biopsy sampling needle, the tissue concentration of a sample is higher, the sample is not easy to take out when staying in the puncture needle, meanwhile, the existing kidney puncture biopsy sampling needle does not have a self-cleaning structure, and a cleaning and disinfecting device is needed to be adopted for cleaning after the use, so that the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

In order to solve the above mentioned drawbacks in the background art, the present invention provides a sampling needle for renal biopsy, which is used for skin and renal biopsy through a puncture needle, and provides a stable negative pressure through a negative pressure device, the sampling needle is communicated with the negative pressure device while puncturing suddenly, so as to facilitate the extraction of renal interstitial fluid, and a liquid inlet can provide physiological saline for diluting the interstitial fluid, thereby facilitating the extraction of the sample interstitial fluid and the cleaning of a sampling tube.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a kidney puncture biopsy sampling needle, including a puncture section of thick bamboo, puncture section of thick bamboo one end fixed mounting pjncture needle, puncture section of thick bamboo other end fixed mounting connector, connector department demountable installation negative pressure device, puncture bobbin base portion fixed mounting feed liquor pipe, puncture section of thick bamboo and the inside sample needle that runs through of pjncture needle, sample needle and puncture section of thick bamboo sliding connection, the sample needle stretches into puncture section of thick bamboo one end outer wall fixed mounting sleeve pipe, the sample needle stretches into puncture section of thick bamboo one end tip fixed mounting bellows, the inside ejector pin that is equipped with of bellows, the bellows is kept away from sample needle one end and is connected with the three-way pipe, the other both ends of three-way pipe respectively with connector and feed liquor union coupling.

Further preferably, the connector is internally provided with a jack in a penetrating manner, the jack is conical, and the diameter of one end, away from the puncture cylinder, of the jack is larger than that of the other end of the jack.

Further preferably, the negative pressure device comprises an air cylinder, one end of the air cylinder is provided with an exhaust tube, the exhaust tube is connected with the connector in an inserting mode, the other end of the air cylinder penetrates through a piston rod, the surface of the piston rod is provided with a plurality of clamping teeth, the clamping teeth are evenly arranged at equal intervals, a limiting rod is fixedly installed at the opening of the air cylinder, and the limiting rod is hinged to the air cylinder.

Further preferably, the guide rod is arranged on the upper side of the sleeve, the push rod is fixedly installed at the top of the sleeve and is in sliding connection with the guide rod, the upper end of the push rod penetrates through the top of the puncture cylinder, a sliding hole is formed in the position, corresponding to the push rod, of the top of the puncture cylinder, a push block is fixedly installed at the top end of the push rod, and a spring is arranged on the surface of the guide rod between the push rod and the inner wall of the puncture cylinder.

Further preferably, a sealing plug is arranged at an opening at the lower end of the liquid inlet pipe, the sealing plug is fixed with the outer wall of the liquid inlet pipe through a connecting belt, and the liquid inlet pipe is externally connected with physiological saline.

Preferably, one end of the ejector rod is fixed with the inner wall of the three-way pipe, the other end of the ejector rod is fixedly provided with a plug, and the diameter of the plug is matched with the inner diameter of the sleeve.

The utility model has the beneficial effects that:

the utility model carries out skin and kidney puncture through the puncture needle, provides stable negative pressure through the negative pressure device, pulls the pull rod to move along the guide rod through rotating the poking block, drives the sampling needle to prick suddenly, separates the plug on the top rod from the sampling needle when the sampling needle pricks suddenly, and is communicated with the negative pressure device through the corrugated pipe and the three-way pipe, thereby providing negative pressure for the puncture needle, facilitating the extraction of kidney tissue fluid, and providing physiological saline for diluting the tissue fluid through the liquid inlet, thereby facilitating the extraction of the sample tissue fluid and the cleaning of the sampling pipe.

Drawings

The utility model will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the negative pressure device of the present invention;

FIG. 3 is a cross-sectional view of a piercing cartridge of the present invention;

FIG. 4 is a schematic cross-sectional view of the bellows of the present invention.

In the figure:

1-puncture cylinder, 2-puncture needle, 3-connector, 301-jack, 4-negative pressure device, 5-liquid inlet pipe, 6-sampling needle, 7-sleeve pipe, 8-corrugated pipe, 9-ejector rod, 10-three-way pipe, 11-air cylinder, 12-air exhaust pipe, 13-piston rod, 14-latch, 15-limiting rod, 16-guide rod, 17-push rod, 18-slide hole, 19-push block, 20-spring, 21-sealing plug, 22-connecting belt and 23-plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

As shown in figures 1-4, a kidney puncture biopsy sampling needle, including a puncture cylinder 1, a puncture needle 2 is fixedly installed at one end of the puncture cylinder 1, a connector 3 is fixedly installed at the other end of the puncture cylinder 1, a negative pressure device 4 is detachably installed at the connector 3, a liquid inlet pipe 5 is fixedly installed at the bottom of the puncture cylinder 1, a sampling needle 6 is arranged inside the puncture cylinder 1 and the puncture needle 2 in a penetrating manner, the sampling needle 6 is slidably connected with the puncture cylinder 1, the sampling needle 6 extends into a sleeve 7 fixedly installed on the outer wall of one end of the puncture cylinder 1, the sampling needle 6 extends into a bellows 8 fixedly installed at one end of the puncture cylinder 1, an ejector rod 9 is arranged inside the bellows 8, one end of the bellows 8, which is far away from the sampling needle 6, is connected with a three-way pipe 10, and the other two ends of the three-way pipe 10 are respectively connected with the connector 3 and the liquid inlet pipe 5.

The connector 3 is internally provided with a jack 301 in a penetrating manner, the jack 301 is conical, and the diameter of one end of the jack 301, which is far away from the puncture cylinder 1, is larger than that of the other end.

The negative pressure device 4 comprises an air cylinder 11, one end of the air cylinder 11 is provided with an exhaust tube 12, the exhaust tube 12 is connected with the connector 3 in an inserting mode, the other end of the air cylinder 11 is provided with a piston rod 13 in a penetrating mode, the surface of the piston rod 13 is provided with a plurality of clamping teeth 14, the clamping teeth 14 are evenly arranged at equal intervals, a limiting rod 15 is fixedly installed at the opening of the air cylinder 11, and the limiting rod 15 is hinged to the air cylinder 11.

The upper side of the sleeve 7 is provided with a guide rod 16, the top of the sleeve 7 is fixedly provided with a push rod 17, the push rod 17 is slidably connected with the guide rod 16, the upper end of the push rod 17 penetrates through the top of the puncture cylinder 1, the top of the puncture cylinder 1 corresponding to the push rod 17 is provided with a slide hole 18, the top end of the push rod 17 is fixedly provided with a push block 19, and the surface of the guide rod 16 between the push rod 17 and the inner wall of the puncture cylinder 1 is provided with a spring 20.

The opening at the lower end of the liquid inlet pipe 5 is provided with a sealing plug 21, the sealing plug 21 is fixed with the outer wall of the liquid inlet pipe 5 through a connecting belt 22, and the liquid inlet pipe 5 is externally connected with physiological saline.

One end of the ejector rod 9 is fixed with the inner wall of the three-way pipe 10, the other end of the ejector rod 9 is fixedly provided with a plug 23, and the diameter of the plug 23 is matched with the inner diameter of the sleeve 7.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims (6)

1. The utility model provides a kidney puncture biopsy sampling needle, its characterized in that, includes a puncture section of thick bamboo (1), a puncture section of thick bamboo (1) one end fixed mounting pjncture needle (2), a puncture section of thick bamboo (1) other end fixed mounting connector (3), connector (3) department demountable installation negative pressure device (4), a puncture section of thick bamboo (1) bottom fixed mounting feed liquor pipe (5), puncture section of thick bamboo (1) and puncture needle (2) inside run through and are equipped with sample needle (6), sample needle (6) and a puncture section of thick bamboo (1) sliding connection, sample needle (6) stretch into a puncture section of thick bamboo (1) one end outer wall fixed mounting sleeve pipe (7), sample needle (6) stretch into a puncture section of thick bamboo (1) one end fixed mounting bellows (8), bellows (8) inside is equipped with ejector pin (9), sample needle (6) one end is kept away from in bellows (8) is connected with three-way pipe (10), the other two ends of the three-way pipe (10) are respectively connected with the connector (3) and the liquid inlet pipe (5).

2. The biopsy needle of claim 1, wherein a jack (301) is arranged in the connector (3) in a penetrating manner, the jack (301) is conical, and the diameter of one end of the jack (301) far away from the puncture cylinder (1) is larger than that of the other end of the jack.

3. The needle of claim 1, wherein the negative pressure device (4) comprises an air cylinder (11), one end of the air cylinder (11) is provided with an air exhaust tube (12), the air exhaust tube (12) is connected with the connector (3) in an inserting manner, the other end of the air cylinder (11) is provided with a piston rod (13) in a penetrating manner, the surface of the piston rod (13) is provided with a plurality of latches (14), the latches (14) are uniformly arranged at equal intervals, a limiting rod (15) is fixedly arranged at the opening of the air cylinder (11), and the limiting rod (15) is hinged to the air cylinder (11).

4. The needle for sampling in renal biopsy according to claim 1, wherein a guide rod (16) is disposed on an upper side of the cannula (7), a push rod (17) is fixedly mounted on a top of the cannula (7), the push rod (17) is slidably connected with the guide rod (16), an upper end of the push rod (17) penetrates through a top of the puncture barrel (1), a slide hole (18) is formed in a position, corresponding to the push rod (17), on the top of the puncture barrel (1), a push block (19) is fixedly mounted on a top end of the push rod (17), and a spring (20) is disposed on a surface of the guide rod (16) between the push rod (17) and an inner wall of the puncture barrel (1).

5. The renal biopsy sampling needle of claim 1, wherein a sealing plug (21) is arranged at the lower opening of the liquid inlet pipe (5), the sealing plug (21) is fixed with the outer wall of the liquid inlet pipe (5) through a connecting belt (22), and the liquid inlet pipe (5) is externally connected with physiological saline.

6. The renal biopsy sampling needle of claim 1, wherein one end of the ejector rod (9) is fixed with the inner wall of the three-way pipe (10), the other end of the ejector rod (9) is fixedly provided with a plug (23), and the diameter of the plug (23) is matched with the inner diameter of the sleeve (7).

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