Sleeve type lumbar puncture needle and use method thereof

Abstract

The invention relates to a sleeve type lumbar puncture needle and a use method thereof. The technical scheme of the invention is that the sleeve type lumbar puncture needle comprises a cylindrical needle head with an inner cavity, a handle with a communicating pipe cavity, and a trocar, wherein the needle head is provided with a first liquid outlet hole and a second liquid outlet hole; the trocar has a cylindrical structure matched with the inner cavity of the needle head and a through hole cavity; and the trocar is provided with a first liquid inlet hole, a second liquid inlet hole and a third liquid inlet hole. The sleeve type lumbar puncture needle provided by the invention has the technical effects that: a transparent observation window or a transparent handle is arranged to observe whether cerebrospinal fluid flows out or not intuitively and visually, the flow is controlled precisely when liquid is taken, the operation is convenient, and the setting and matching of the mutual positions between the first liquid outlet hole and the second liquid outlet hole, and the first liquid inlet hole, the second liquid inlet hole and the third liquid inlet hole enable the liquid outgoing manner and the liquid outgoing volume can be flexibly adjusted according to requirements of on-scene patients or operators. The sleeve type lumbar puncture needle is convenient to use, is safe and reliable, and is long in service life, accurate in adjustment, and complete in function.

Description

technical field [0001] The invention relates to medical auxiliary equipment, in particular to a sheathed lumbar puncture needle and a method for using the same. 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 th...

AI Technical Summary

Problems solved by technology

Although the above lumbar puncture needle has a simple structure, it also has the following disadvantages: In order to judge whether the needle is inserted into the spinal canal, the needle core needs to be pulled out from the cavity of the needle to observe whether the cerebrospinal fluid flows out from the cavity of the needle. Insert the needle core into the needle cavity of the needle, 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 relatively troublesome to reinsert the cavity of the needle with a smaller diameter; after pulling out the needle core and connecting the pressure measuring tube, it is easy to lose part of the cerebrospinal fluid, resulting in inaccurate pressure measurement; when the intracranial pressure is high, once the puncture is successful, the needle When the needle core is pulled out from the needle cavity, it will cause cerebrospinal fluid to spurt out, which can easily induce the formation of brain herniation and endanger life; when it is necessary to collect cerebrospinal fluid, the needle core needs to be pulled out from the needle cavity, and the flow rate of cerebrospinal fluid at this time is difficult to be accurate control

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