A medical puncture needle

Abstract

A medical puncture needle, which relates to the field of medical technology, includes a handle, a fixed block, a connecting part, a limiting part, a first cannula, a second cannula, a needle, and a hard guide tube connected to the rear end. The sleeve is sleeved on the front of the needle, the rear end of the needle extends into the first sleeve, and a sliding hole is opened at the center of the connecting part and the limiting part, the first sleeve is slidably connected with the sliding hole, and the hard guide tube The rear end of the first sleeve passes through the rear end of the first sleeve, and passes through the rear end surface of the fixed block and the handle, and the hard guide tube is fixedly connected with the fixed block and the handle; The spring is also provided with a limiting part on the limiting part. The present invention is simple in structure and easy to use, and can easily cover the sharp part with the second sleeve while puncturing; at the same time, by setting the movable second sleeve, it can facilitate puncture positioning and delay the puncture process. Increase the operator's sense of control and greatly reduce the occurrence of puncture errors.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a medical puncture needle. Background technique [0002] Clinically, puncture needles are often used in infusion, blood drawing, and drainage. Usually, after the puncture needle is inserted, the sharp part of the needle can easily puncture other tissues and organs, resulting in medical accidents. Small medical accidents can be resolved by re-puncture. However, larger medical accidents are prone to danger. [0003] In the existing patent literature, there is a scheme of setting a sleeve on the sharp part of the needle, and covering the needle with the sleeve after the puncture, so as to avoid being stabbed by the sharp part. However, most of these schemes have complex structures and are not practical. Not widely used. [0004] In addition, during the puncturing process, because the sharp part of the needle is very sharp, it is easy to pierce the blood vessel or get out of the p...

AI Technical Summary

Problems solved by technology

[0002] Clinically, puncture needles are often used in infusion, blood drawing, and drainage. Usually, after the puncture needle is inserted, the sharp part of the needle can easily puncture other tissues and organs, resulting in medical accidents. Small medical accidents can be resolved by re-puncture. solution, larger medical accidents are prone to danger

[0003] In the existing patent literature, there is a scheme of setting a sleeve on the sharp part of the needle, and covering the needle with the sleeve after the puncture, so as to avoid being stabbed by the sharp part. However, most of these schemes have complex structures and are not practical. not widely used

[0004] In addition, during the puncturing process, because the sharp part of the needle is very sharp, it is easy to pierce the blood vessel or get out of the predetermined position, resulting in a bulging needle phenomenon, which requires repositioning or repuncturing, which not only increases the pain of the patient, but also causes The difficulty of puncture increases. For thin blood vessels or some elderly patients, operators with many years of experience are often required to complete the puncture, and ordinary operators are not competent

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