CN209951354U

CN209951354U - Disposable blunt-head lumbar puncture needle

Info

Publication number: CN209951354U
Application number: CN201920230681.9U
Authority: CN
Inventors: 费勇
Original assignee: First Hospital of Jiaxing
Current assignee: First Hospital of Jiaxing
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2020-01-17
Anticipated expiration: 2029-02-19

Abstract

The utility model discloses a disposable blunt-head lumbar puncture needle, which comprises a needle tube and a needle core, wherein the needle tube and the needle core are both provided with end heads; the needle tube is provided with scale marks and is sleeved with a buoy moving on the needle tube; the needle core is penetrated in the needle tube, and is characterized in that: one end of the needle point of the needle core is provided with a bevel cut surface, and the tail end of the bevel cut surface is provided with a cambered surface blunt end. Compared with the prior art, the utility model the advantage be: the utility model discloses can avoid haring dura mater sac and important blood vessel, cross articular abrupt pjncture needle again easily, more traditional pjncture needle, convenient and practical more.

Description

Disposable blunt-head lumbar puncture needle

Technical Field

The utility model relates to a medical appliance, in particular to a disposable blunt lumbar puncture needle.

Background

With the development of medical science, minimally invasive treatment has become the mainstream of surgical operations, and lumbar spine endoscopic surgery has been widely applied to patients with lumbar disc herniation and lumbar spinal stenosis, so as to obtain better clinical effects. The first step of lumbar spine endoscopic surgery is to use a puncture needle to puncture skin to a target point A (shoulder of the upper articular process), then pull out a sharp needle core, replace the sharp needle core with a blunt needle core, slide over the shoulder of the upper articular process, enter a vertebral canal and reach a final target point. The purpose of replacing a blunt needle core from the target point A to the final target point is as follows: the sharp puncture needle is prevented from puncturing the dural sac and important blood vessels, however, in the clinical practical operation process, after the blunt needle core is replaced, the puncture needle is difficult to cross the shoulder of the upper articular process, and the depth of the puncture needle entering the body is about 10-14cm, so that the adjustment is very difficult, the puncture needle is easy to bend, and the subsequent tube placement is more difficult. At present, a puncture needle which is not easy to damage the dural sac and important blood vessels and is easy to pass through the articular process is urgently needed clinically. Therefore, the development of a disposable blunt lumbar puncture needle is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a disposable blunt lumbar puncture needle, which can avoid damaging the dura mater sac and the important blood vessel and can easily cross the puncture needle of the articular process.

The above object of the present invention is achieved by the following technical solutions: a disposable blunt lumbar puncture needle comprises a needle tube and a needle core, wherein the needle tube and the needle core are both provided with end heads; the needle tube is provided with scale marks and is sleeved with a buoy moving on the needle tube; the needle core is penetrated in the needle tube, and is characterized in that: one end of the needle point of the needle core is provided with a bevel cut surface, and the tail end of the bevel cut surface is provided with a cambered surface blunt end.

Compared with the prior art, the utility model the advantage be: the utility model discloses can avoid haring dura mater sac and important blood vessel, cross articular abrupt pjncture needle again easily, more traditional pjncture needle, convenient and practical more.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partial enlarged view of the front end of the stylet of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a disposable blunt lumbar puncture needle comprises a needle tube 1 and a needle core 2, wherein both the needle tube 1 and the needle core 2 are provided with end heads 3; the needle tube 1 is provided with scale marks and is sleeved with a buoy 4 moving on the needle tube 1; the needle core 2 is penetrated in the needle tube 1, and is characterized in that: one end of the needle point of the needle core 2 is provided with a chamfer 5, and the tail end of the chamfer 5 is provided with a cambered blunt end 6.

The utility model discloses can avoid haring dura mater sac and important blood vessel, cross articular abrupt pjncture needle again easily, more traditional pjncture needle, convenient and practical more.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A disposable blunt lumbar puncture needle comprises a needle tube and a needle core, wherein the needle tube and the needle core are both provided with end heads; the needle tube is provided with scale marks and is sleeved with a buoy moving on the needle tube; the needle core is penetrated in the needle tube, and is characterized in that: one end of the needle point of the needle core is provided with a bevel cut surface, and the tail end of the bevel cut surface is provided with a cambered surface blunt end.