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Two-way cannulation lumbar epidural puncture needle

A lumbar epidural joint and puncture needle technology, which is applied in the field of puncture needles, can solve the problems of inability to inject medicine at different positions, one-way insertion of dural puncture needles, etc., to reduce back pain, reduce compression, and small cross-sectional area Effect

Active Publication Date: 2022-04-15
THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention intends to provide a combined lumbar epidural puncture needle for two-way catheterization to solve the problem that the existing dural puncture needle can only be used for one-way catheterization and cannot inject medicine into different parts of the tube at the same time

Method used

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  • Two-way cannulation lumbar epidural puncture needle
  • Two-way cannulation lumbar epidural puncture needle
  • Two-way cannulation lumbar epidural puncture needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, basically as attached figure 1 , figure 2 Shown: a two-way cannulated lumbar-hard combined puncture needle, including a needle sheath 1 and a needle core 2 pierced in the needle sheath 1. Needle cover 1 comprises sleeve tube 12 and cover seat 11, combines Figure 5 As shown, the cross-section of the sleeve 12 is oval, the tip of the sleeve 12 is wedge-shaped, and the tip of the wedge 13 takes the long axis of the cross-section of the sleeve 12 as the dividing line. Two passages 14 are arranged side by side in the sleeve 12, and the cross section of the passages 14 is oval. The two passages 14 respectively open on both sides of the wedge 13 at the tip of the casing 12. The inner walls of the two passages 14 at the wedge 13 are provided with arc-shaped guide surfaces 15, and the guide surfaces 15 in the two passages 14 face away from each other. combine Figure 4 As shown, the guide surface 15 is smoothly transitioned to the inner wall of the channel 14...

Embodiment 2

[0030] Example 2, combined with Figure 7 , Figure 8 As shown, the tip of the wedge 13 in this embodiment takes the short axis of the section of the casing 12 as the dividing line. Such as Figure 9 As shown, the tube inserter 3 is provided with a sliding hole 32 and an intubation hole 33, and the sliding hole 32 and the intubation hole 33 are distributed around the center of the tube inserter 3, and the sliding hole 32 is a quarter arc. The angle between the center line of the insertion hole 33 passing through the center of the tube inserter 3 and the center line of the sliding hole 32 passing through the center of the tube inserter 3 is 135°. In this way, the cross-sectional area of ​​the channel 14 in the cannula 12 in this embodiment is relatively small, which allows the needle sheath 1 to be processed into a smaller structure, and the effect of shielding and protecting the other channel 14 is better when the tube inserter 3 is placed in a single tube.

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Abstract

The invention discloses a two-way cannulated lumbar-hard combined puncture needle in the field of puncture needles, comprising a needle sheath, a needle core pierced in the needle sheath, and a tube inserter connected to the needle sheath; the needle sheath includes a sleeve and a sheath , the cross-section of the casing is oval, the tip of the casing is wedge-shaped, and there are two channels arranged side by side in the casing. The two channels are respectively opened on both sides of the tip of the casing. Curved guide surface. The invention can perform two-way catheterization with one puncture, satisfies the implementation of epidural block in a wide range in different directions, causes little puncture damage to patients, is convenient to operate, and has remarkable effects.

Description

technical field [0001] The invention relates to the field of puncture needles, in particular to a combined puncture needle for two-way catheterization. Background technique [0002] Epidural anesthesia refers to epidural space block anesthesia, that is, anesthesia is injected into the epidural space to block the spinal nerve root and temporarily paralyze the innervated area, which is called epidural space block anesthesia, or epidural for short. block. Epidural block usually uses an epidural puncture needle from the back or waist of the human body. After passing through the dura mater, a catheter is inserted into the needle tube to inject anesthesia for anesthesia, and when necessary, additional anesthesia is injected to prolong the anesthesia time. The traditional epidural puncture needle can only insert the catheter in one direction at a time, that is, the catheter can only be inserted in one direction at a time. In case of certain surgeries that require a wide range of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/34
CPCA61B17/3421A61B17/3401A61B17/3462A61B2017/3433
Inventor 卢孙山胡黎黎顾健腾鲁开智
Owner THE FIRST AFFILIATED HOSPITAL OF ARMY MEDICAL UNIV