CN204542219U - A kind of kidney internal medicine biopsy needle - Google Patents

Abstract

The utility model provides a biopsy puncture needle for nephrology, which comprises a needle tube and a puncture needle head, a piston rod is arranged inside the needle tube, and a needle cap; the needle cap includes a clamp cover and a liquid collection device, the clamp A water-gas separation membrane is provided between the cover and the liquid collection device, a cavity is provided in the liquid collection device, and a rubber stopper is provided at the end of the liquid collection device away from the water-gas separation membrane; the piston rod faces the The end of the puncture needle is provided with a pressure sensor and an air bag, the piston rod is provided with a single-chip microcomputer connected with the pressure sensor, and the single-chip microcomputer is connected with a warning light; the puncture needle is provided with at least one through hole. The biopsy puncture needle for nephrology can remind the doctor to control the speed of pulling the piston rod and relieve the pain of the patient; after using the utility model to extract the kidney fluid, the gas in the needle tube can be discharged, which improves the accuracy of the test.

Description

A biopsy puncture needle for nephrology

technical field

The utility model relates to the technical field of medical devices, in particular to a biopsy puncture needle for nephrology.

Background technique

Renal puncture is a commonly used medical diagnostic method in nephrology. Liquid is extracted from the human kidney for laboratory testing. The current renal puncture needle is often blocked by some solid particles in the kidney when puncturing the human kidney, which affects the progress and puncture effect of renal puncture. , Increased great work difficulty to medical personnel.

In view of this, Chinese patent 201320389104.7 discloses a puncture needle for kidney biopsy, including a syringe, a catheter and a puncture needle. The utility model has a simple structure, can prevent the puncture needle from being blocked when the kidney biopsy puncture is performed on the patient, and reduces the work difficulty of the medical personnel. But it has the following problems: 1. It is difficult for the doctor to control the speed of pulling the syringe lever, which increases the pain of the patient; 2. After the kidney fluid is extracted, the gas in the syringe is not easy to discharge, which affects the test effect.

Utility model content

The problem to be solved by the utility model is to provide a biopsy puncture needle for nephrology that can remind the doctor to control the speed of pulling the piston rod. After using the utility model to extract the kidney fluid, the gas in the needle tube can be discharged, which improves the accuracy of the test. Rate.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a biopsy puncture needle for nephrology, including a needle tube and a puncture needle, a piston rod is arranged inside the needle tube, and it is characterized in that it also includes a needle cap; The needle cap includes a card cover and a liquid collection device, a water-air separation membrane is arranged between the card cover and the liquid collection device, a cavity is arranged in the liquid collection device, and the liquid collection device is far away from the water-air separation device. One end of the membrane is provided with a rubber stopper; the end of the piston rod facing the puncture needle is provided with a pressure sensor and an air bag, and the piston rod is provided with a single-chip microcomputer connected with the pressure sensor, and the single-chip microcomputer is connected with an alarm Light; the puncture needle is provided with at least one through hole near the pinhole.

Preferably, the biopsy puncture needle for renal medicine described above, wherein the end of the piston rod away from the puncture needle is provided with a push head, and the outside and inside of the push head are concave.

Preferably, in the aforementioned biopsy needle for nephrology, the water-gas separation membrane is multi-layered.

Preferably, in the aforementioned biopsy puncture needle for nephrology, the single-chip microcomputer adopts the STC89C52RC chip.

Preferably, in the aforementioned biopsy needle for nephrology, the number of said through holes is three.

Preferably, in the aforementioned biopsy needle for internal medicine of kidney, the distance between two adjacent through holes is 3 mm.

The technical effect of the utility model is mainly reflected in that when the doctor pulls the piston rod, the pressure sensor can detect the pressure in the needle tube and transmit the signal to the single-chip microcomputer. When the detected pressure is less than the set value of the single-chip microcomputer, the single-chip microcomputer controls the alarm light The sound reminds the doctor that the doctor can slow down the speed of pulling the piston rod, reducing the pain of the patient; the airbag will automatically change the volume according to the pressure change in the needle tube, maintain the pressure in the needle tube stable, and further reduce the pain of the patient; After the doctor has extracted the kidney fluid, insert the puncture needle from the rubber stopper into the cavity, push the piston rod to discharge the gas in the needle tube, and improve the accuracy of the test; the puncture needle is provided with multiple through holes near the needle hole, Therefore, kidney fluid can be extracted from different parts of the kidney, reducing the pressure on the same part of the kidney and reducing the patient's pain.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a cross-sectional view of the needle cap in the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is further described, so that the technical scheme of the present utility model is easier to understand and grasp.

As shown in Figures 1 and 2, a biopsy puncture needle for nephrology includes a needle tube 1, a puncture needle 2, and a needle cap 3. The needle tube 1 is provided with a piston rod 4, and the needle cap 3 includes a clamping cover 31 and a liquid collection device 32. A multi-layer water-gas separation membrane 33 is arranged between the card cover 31 and the liquid collection device 32, a cavity 34 is arranged in the liquid collection device 32, and a rubber stopper 35 is provided at the end of the liquid collection device 32 away from the water-gas separation membrane 33 The end of the piston rod 4 towards the puncture needle 2 is provided with a pressure sensor 41 and an air bag 42, and the piston rod 4 is provided with a single-chip microcomputer 43 connected to the pressure sensor 41, wherein the single-chip microcomputer adopts the STC89C52RC chip. The single-chip microcomputer 43 is connected with a warning light 44; the puncture needle 2 is provided with three through holes 21 near the pinhole, and the distance between two adjacent through holes 21 is 3mm.

As a preferred solution, the end of the piston rod 4 away from the puncture needle 2 is provided with a push head 5, and the outside and inside of the push head are concave. This design is convenient for medical personnel to use, and can reduce wear and tear on the hands of medical personnel.

When the doctor pulls the piston rod 4, the pressure sensor 41 can detect the pressure in the needle tube and transmit the signal to the single-chip microcomputer 43. When the detected pressure is lower than the set value of the single-chip microcomputer 43, the single-chip microcomputer 43 controls the alarm lamp 44 to send out a sound to remind the doctor. The doctor can slow down the speed of pulling the piston rod 4, reducing the pain of the patient; the airbag 42 will automatically change the volume according to the pressure change in the needle tube 1, maintain the pressure in the needle tube 1 stable, and further reduce the pain of the patient; After the doctor has extracted the kidney fluid, insert the puncture needle 2 from the rubber stopper 35 into the cavity 34, push the piston rod 4 to discharge the gas in the needle tube 1, and improve the accuracy of the test; the puncture needle 2 is set near the pinhole There are multiple through holes 21, so kidney fluid can be drawn from different positions of the kidney, which reduces the pressure on the same part of the kidney and relieves the patient's pain.

An embodiment of the present utility model has been described in detail above, but the content described is only a preferred embodiment of the present utility model, and cannot be considered as limiting the implementation scope of the present utility model. All equal changes and improvements made according to the application scope of the utility model should still belong to the scope covered by the patent of the utility model.

Claims (6)

1. a kidney internal medicine biopsy needle, comprises needle tubing and piercing needle, is provided with piston rod, it is characterized in that in described needle tubing: it also comprises syringe needle block; Described syringe needle block comprises Ka Gai and liquid collector, and be provided with aqueous vapor diffusion barrier between described Ka Gai and liquid collector, be provided with cavity in described liquid collector, described liquid collector is provided with rubber closure away from one end of described aqueous vapor diffusion barrier; Described piston rod is provided with pressure transducer and air bag on the termination of described piercing needle, and be provided with the single-chip microcomputer be connected with described pressure transducer in described piston rod, described single-chip microcomputer is connected with alarm lamp; Described piercing needle is provided with at least one through hole near pin hole place.

2. kidney internal medicine biopsy needle according to claim 1, is characterized in that: described piston rod is provided with away from one end of described piercing needle and cuts somebody's hair, and the outside of cutting somebody's hair and inner side are spill.

3. kidney internal medicine biopsy needle according to claim 1, is characterized in that: described aqueous vapor diffusion barrier is that multilamellar is arranged.

4. kidney internal medicine biopsy needle according to claim 1, is characterized in that: described single-chip microcomputer adopts STC89C52RC chip.

5. kidney internal medicine biopsy needle according to claim 1, is characterized in that: the quantity of described through hole is three.

6. kidney internal medicine biopsy needle according to claim 1 or 5, is characterized in that: the distance between two adjacent described through holes is 3mm.