Lumbar puncture needle

Abstract

The invention discloses a lumbar puncture needle, which comprises a needle, wherein the needle is provided with a tubular needle cavity, the tail of the needle is fixedly arranged on a handle, and the handle is provided with a cavity and a valve handle; the cavity consists of a handle cavity, a tubular handle cavity and a threaded through hole, the left end of the handle cavity communicates with the tubular handle cavity, the right end of the handle cavity communicates with the threaded through hole, the tubular needle cavity communicates with the tubular handle cavity, and the left end of the handle cavity is a conical tubular cavity surface; the valve handle comprises a threaded rod, the left end of the threaded rod is provided with an integrated valve handle cone, the right end of the threaded rod is provided with an integrated rotating handle, the threaded rod runs through the threaded through hole, the outer surface of the valve handle cone is matched with the conical tubular cavity surface, and the rotating handle is exposed on the right side of the handle; the bottom of the handle is provided with a fluid outlet seat, the top of the handle is provided with a pressure-measuring seat, the fluid outlet seat is provided with a valve, and the pressure-measuring seat is connected with a pressure-measuring device. The lumbar puncture needle can ensure that whether cerebrospinal fluid flows out or not can be directly viewed, can accurately control the flow of cerebrospinal fluid, and is easy and convenient to operate and safe to use.

Description

technical field [0001] The invention relates to a puncture needle, in particular to a lumbar puncture needle, which belongs to medical auxiliary equipment. Background technique [0002] Lumbar puncture is one of the commonly used clinical operations in neurology. It is mainly used for measuring cerebrospinal fluid pressure, extracting cerebrospinal fluid, injecting drugs into the subarachnoid space, and performing cerebrospinal fluid angiography. The instrument used for lumbar puncture is a lumbar puncture needle, and the commonly used lumbar puncture needle includes a hollow needle head, a needle seat and a needle core, and the needle head is connected to the needle seat. Before puncture, first insert the needle core into the needle cavity of the needle head. When the needle head and the needle core enter the human body, in order to judge whether the needle head enters the spinal canal, the needle core needs to be pulled out from the needle cavity to observe whether the cer...

AI Technical Summary

Problems solved by technology

Although the above-mentioned lumbar puncture needle has a simple structure, it also has the following deficiencies: 1. In order to judge whether the needle is inserted into the spinal canal, the needle core needs to be pulled out from the needle cavity to observe whether the cerebrospinal fluid flows out from the needle cavity. , re-insert the needle core into the needle cavity of the needle head, and then perform the puncture operation again. Therefore, the puncture needle lacks the intuitive visibility to observe whether the cerebrospinal fluid flows out, and the needle core is continuously inserted and pulled out, which prolongs the puncture operation time. It is not easy to reinsert the needle core into the smaller diameter needle cavity

3. When the intracranial pressure is high, once the puncture is successful, when the needle core is pulled out from the needle cavity, a large amount of cerebrospinal fluid will be ejected, which may easily induce the formation of brain herniation and endanger life

4. When cerebrospinal fluid needs to be taken, the needle core needs to be pulled out from the needle cavity, and the flow of cerebrospinal fluid is difficult to control accurately

Images