Side channel puncture needle for trocar needle

A trocar and puncture needle technology, applied in the direction of puncture needles, trocars, etc., can solve the problem that the strength of the material at the side hole cannot meet the requirements of passing through the isolation plug, the technology of the cannula puncture needle has not been disclosed, and the puncture needle opens the side hole In order to avoid problems such as section strength damage, achieve unique novelty and practicability, avoid unexpected leakage, and solve the effect of easy fracture

Inactive Publication Date: 2016-08-03
张亚根
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] One is: the diameter of the puncture needle is relatively small, taking the 26G specification as an example, the diameter is only 0.36mm, and the depth of the side hole is as much as 0.15mm, and the remaining part is very weak, and the material strength at the side hole is often not enough. Passing through the isolation plug during the product assembly process, or after passing through the isolation plug, the strength of the section at the side hole of the puncture needle is damaged, which in turn increases the probabili

Method used

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  • Side channel puncture needle for trocar needle
  • Side channel puncture needle for trocar needle

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Embodiment Construction

[0016] figure 1 It is a schematic sectional view of the structure of the invention, from which it can be seen that the present invention is composed of a section of straight solid steel wire 1; it is characterized in that a long side groove 1B is provided on the side of the solid steel wire 1, and the solid steel wire The section of 1 is circular with notches; one end of the solid steel wire 1 is in the shape of a triangular needlepoint 1A, and the tip of the needlepoint 1A is located on the axis of the solid steel wire 1 .

[0017] figure 2 It is a schematic cross-sectional view of the solid steel wire of the present invention. It can be seen from this that when the solid steel wire 1 passes through the front end of the sleeve on the trocar, a formation can be formed between the side groove 1B on the solid steel wire 1 and the sleeve. A channel formed by the sleeve tube and side groove 1B, and this channel can meet the needs of blood backflow observation during puncture; wh...

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Abstract

The invention discloses a side channel puncture needle for a trocar needle. The side channel puncture needle comprises one segment of solid steel wire. The side channel puncture needle is characterized in that a side channel is formed in the side surface of the solid steel wire; the section of the solid steel wire is a circle with a gap; meanwhile, one end of the solid steel wire is in a three-edged needlepoint form; the conical tip of the needle tip is located on the axis of the solid steel wire.

Description

Technical field: [0001] The invention relates to a basic component for medical equipment, in particular to a side slot puncture needle for a trocar used in venipuncture. Background technique: [0002] Modern medicine has an inseparable relationship with venipuncture. In clinical practice, it is often necessary to establish an infusion channel by means of puncture to complete the purpose of diagnosis and treatment, but a puncture needle must be used; with the advancement of science and technology and the needs of treatment, a large number of trocar puncture needles are used in clinical diagnosis and treatment. [0003] At present, trocar puncture needles are mostly hollow steel pipe needles. Due to the composition characteristics of the trocar, the diameter of the cannula puncture needle is smaller than the indwelling cannula on its periphery. At the same time, in order to observe the blood return when the puncture needle enters the vein, a side hole must be added below the ...

Claims

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Application Information

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IPC IPC(8): A61B17/34
CPCA61B17/34A61B17/3417
Inventor 张亚根张亚平
Owner 张亚根
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