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Central vein puncture trocar

A technique for venipuncture and central venous catheters, applied in the direction of puncture needles, puncture needles, trocars, etc., can solve the problems of cumbersome steps, long time-consuming, poor operability, etc., and achieve the effect of simple steps and less time-consuming

Inactive Publication Date: 2018-04-27
王诗庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of cumbersome central venous catheterization steps, poor operability and long time consumption, and provide a central venous puncture trocar that can solve the steps of inserting a guide wire and inserting a central venous catheter in one puncture

Method used

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Embodiment Construction

[0020] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0021] see Figure 1~3 , The embodiment of the present invention is provided with an external guide needle 1, a central venous catheter 2, a guide wire 3, a syringe 4 and a heparin cap 5.

[0022] The needle tube of the outer guide needle 1 is composed of two hollow semi-cylindrical bodies A and B, the needle tails 13 of the two hollow semi-cylindrical bodies A and B are provided with a lock C, and the needle points 14 of the two hollow semi-cylindrical bodies A and B are provided with With card slot D.

[0023] The central venous catheter 2 is placed in the outer guide needle 1, the side tube 21 of the central venous catheter 2 is externally connected to the syringe 4, and the main pipe 22 of the central venous catheter 2 is connected to the heparin cap 5;

[0024] The guide wire 3 is arranged in the main pipe 22 of the central venous catheter 2, t...

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Abstract

The invention provides a central vein puncture trocar, relating to central vein puncture cathetering. The central vein puncture trocar is provided with an outer guide needle, a central vein catheter,a guide steel wire, an injection syringe and a heparin cap, wherein a needle tube of the outer guide needle is composed of two hollow half cylinders, lock catches are arranged at the needle tails of the two hollow half cylinders, and clamping grooves are arranged at the needle points of the two hollow half cylinders; the central vein catheter is arranged in the outer guide needle, the injection syringe is connected outside a side pipe of the central vein catheter, and a main pipe of the central vein catheter is connected with the heparin cap; the guide steel wire is arranged in the main pipe of the central vein catheter, the tail end of the guide steel wire penetrates through the heparin cap and is fixed with the heparin cap, and the guide steel wire can advance and retreat through the effect of external force.

Description

technical field [0001] The invention relates to a central venous puncture tube, in particular to a central venous puncture trocar. Background technique [0002] Central venous catheterization technology has been in clinical use for more than 40 years. The traditional method of catheterization is to first locate the guide needle, insert the guide wire, withdraw the guide needle and replace it with a skin expansion needle, and then insert the central vein. catheter etc. at least 4 steps. Studies have shown that 1 / 4 of puncture failures occur during the insertion of the guide wire and subsequent steps. The steps are cumbersome, the operability is poor, and it takes a long time, especially when rescuing patients, this method seems inappropriate. [0003] Chinese patent CN 204684358 U discloses a Y-shaped connector and a tube for a central venous puncture trocar. In order to solve the above technical problems, it includes a main connecting tube and a guide wire tube. The two e...

Claims

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Application Information

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IPC IPC(8): A61B17/34
CPCA61B17/3415A61B17/3421A61B2017/00831
Inventor 王诗庆
Owner 王诗庆
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