Kidney biopsy puncture device

Abstract

The invention discloses a kidney biopsy puncture device, and belongs to the technical field of medical equipment. The kidney biopsy puncture device comprises a shell (1), a rotary pressing plate (2),a rotary shaft (3), a puncture needle tube (4) and a puncture needle head (5), wherein one part of the puncture needle tube (4) extends out of the bottom of the shell (1), and the length of the rotarypressing plate (2) is larger than the shortest distance between the rotary shaft (3) and the puncture needle tube (4); and the kidney biopsy puncture device further comprises two sets of springs (6),and the two sets of springs (6) are arranged on the outer side of the puncture needle tube (4). By the adoption of the puncture device, the whole process of puncture and pulling-out only needs about1s, the puncture speed is greatly increased, the puncture needle is automatically pulled out instantly under the action of resilience force of the springs, a patient almost has no reaction time, the situation that the puncture needle head scratches the kidney is avoided, the safety of the patient is guaranteed, the patient experience is good, and medical staff can operate the puncture device veryconveniently without depending on experience and proficiency of the medical staff.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a kidney biopsy puncture device. Background technique [0002] A kidney biopsy, also called a kidney biopsy, is the sampling of kidney tissue for a more accurate diagnosis of kidney disease. At present, commonly used puncture devices for kidney tissue biopsy include: (1) Bard biopsy gun, which performs cutting biopsy sampling through the inner core and outer core; Negative pressure is created, and kidney tissue is sampled. [0003] The above-mentioned two types of commonly used biopsy devices all have the following problems in common: [0004] Under normal circumstances, the kidney will slide up and down with the person's breathing. Therefore, when the existing renal biopsy gun is punctured, the patient needs to hold his breath, or his family members or medical staff need to press the nasal cavity and mouth to keep the kidney still. However, when the puncture needle ...

AI Technical Summary

Problems solved by technology

[0004] Under normal circumstances, the kidney will slide up and down with the person's breathing. Therefore, when the existing renal biopsy gun is punctured, the patient needs to hold his breath, or his family members or medical staff need to press the nasal cavity and mouth to keep the kidney still. However, when the puncture needle penetrates into the kidney tissue, if the patient cannot hold his breath due to pain or other discomfort, or when he breaks free from the pressure and involuntarily makes an "ah", the kidney will be displaced, and the puncture needle has not been pulled out at this time. This can severely scratch the kidney and cause massive hemorrhage

[0005] In order to solve the above problems, those skilled in the art have made a lot of efforts, such as application numbers 2017207714317, 2018222760000 and other Chinese patent applications. The steps are not continuous, requiring human response and taking a long time;

[0006] Moreover, CN2018222760000 makes the puncture needle enter the kidney tissue by pressing the spring by hand, but the force required to press into the kidney tissue is very large, and it is necessary to overcome the spring force and the kidney tissue. Generally, the strength of the hand is not easy to achieve, because the current puncture Sometimes, the puncture needle should stay above the capsule of the kidney, and then suddenly fire the gun to puncture, that is, there is a requirement for the puncture speed, because if it is too slow, the kidney will be pushed forward, because the intestine is in front of the kidney, and the intestine is under pressure It will be deformed, which means that the kidney does not have a strong support, resulting in insufficient puncture depth of the kidney tissue. Insufficient strength may easily cause puncture failure;

[0007] Moreover, its rebound requires artificial release of the pressing cap, but it is difficult to grasp the timing of the release. First of all, it is necessary to ensure whether the pressing force is sufficient to make the puncture needle penetrate into the kidney tissue, and then the artificial reaction, release, the entire puncture timing At least three or four seconds, and for inexperienced beginners, it takes longer to react

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