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Epidural space safety puncture needle

An epidural space, puncture needle technology, applied in the direction of puncture needle, trocar, etc., can solve the problems of easy to pierce the dura mater, damage to the spinal cord, etc.

Inactive Publication Date: 2015-04-29
王家松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the different sensory sensitivity and reaction coordination speed of each person, when the epidural space is felt or found, the puncture may still be advancing, and it is easy to penetrate the dura mater and even damage the spinal cord, leading to serious consequences

Method used

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  • Epidural space safety puncture needle
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  • Epidural space safety puncture needle

Examples

Experimental program
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Effect test

Embodiment Construction

[0014] After the preparations are done, take the epidural puncture needle, make the negative pressure display device upward, perform normal puncture operation, and the needle core will retract into the puncture needle when it encounters resistance. When the front part of the puncture needle reaches the epidural space, the resistance decreases. Small or disappear, the elastic forward pushing device in the rear seat pushes the core body forward, and the safety device pushes the dura mater forward to prevent the puncture needle from piercing the dura mater. At the same time, the negative pressure display device moves forward, prompting the puncture needle When the epidural space has been reached, the forward puncture must be stopped, and a syringe can be connected through the injection hole of the negative pressure display device to test the negative pressure of the epidural or to observe whether there is blood or cerebrospinal fluid outflow. Anesthetic drugs can be injected thro...

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Abstract

An epidural space safety puncture needle comprises an epidural puncture needle body and a needle core thereof. The needle core is composed of a safety guard device in the front, a negative-pressure conduction device in the middle, a negative-pressure display device in the rear, an elastic device in the tail and a needle core base. It is judged that the point of the epidural puncture needle body already enters the epidural space according to forward movement of the negative-pressure display device so as to stop puncture operation, the defect of difference of hand feel sensitivity of an operator is overcome, and mental pressure in the operation process is alleviated. The safety guard device in the front can surpass the point of the epidural puncture needle body so as to prevent the danger that the point perforate the spinal dura mater.

Description

technical field [0001] The invention relates to a safety puncture needle for epidural space. Background technique [0002] At present, when epidural puncture is performed, it is judged that the needle tip of the epidural puncture needle has reached the epidural space mostly by the sense of falling when the anesthetist operates. Then attach a smooth syringe to verify that the needle tip is indeed in the epidural space. There are also various liquid or balloon devices to judge whether the epidural puncture needle reaches the epidural space. [0003] Since everyone has different hand sensitivity and response coordination speed, when the epidural space is felt or found, the puncture may still be advancing, and it is easy to penetrate the dura mater and even damage the spinal cord, leading to serious consequences. Contents of the invention [0004] The purpose of the present invention is to provide a new type of dura mater that can automatically display that the needle tip h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34
CPCA61B17/3401A61B17/3403A61B17/3494
Inventor 王家松金朝海
Owner 王家松
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