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Central venous puncture needle

A venipuncture and puncture needle technology, applied in the direction of puncture needles, trocars, etc., can solve the problem of not being able to accurately judge whether the puncture needle is a vein or an artery, and achieve the effects of avoiding clinical complications, improving safety, and reducing pain

Inactive Publication Date: 2009-04-01
天津博安医用有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing puncture needle cannot accurately determine whether the blood vessel pierced by the puncture needle is a vein or an artery, and to provide a central venous puncture needle

Method used

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  • Central venous puncture needle
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Examples

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Effect test

Embodiment 1

[0012] Such as figure 1 As shown, the present embodiment selects a Y-shaped venipuncture needle (side piercing type), and the venipuncture needle includes a puncture needle tube 1, a guide wire introduction tube 2, and a valve 4 is arranged on the guide wire introduction tube body. The valve includes a valve body 4-3 arranged on the guide wire introduction tube 2, in the middle of the valve body is a valve core 4-2 with a one-way hole 3 for guide wire introduction, and the valve core is connected with the valve outside the valve body. Shank 4-1 connection (see figure 2 ).

[0013] The valve can be any valve such as butterfly valve, gate valve or ball valve.

[0014] When in use, first insert the puncture needle tube 1 into the blood vessel, turn the valve handle 4-1 to open the valve core 4-2, guide the wire guide tube 2 to conduct, draw blood, observe the situation of blood flowing out from the valve port, if there is leakage Blood has the characteristics of pulsation, la...

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Abstract

A centre vein puncture needle solves the problem that the existing puncture needle can not accurately decide that a blood vessel being penetrated into by the puncture needle is a vein or an arterial. The puncture needle comprises a puncture needle tube, a guide wire ingress pipe; wherein, the pipe body of the guide wire ingress pipe is provided with a valve which is composed of a valve body and a valve disc; the valve disc is provided with a one-way hole for the leading-in of a guide wire and is connected with a valve handle which is arranged at the outside of the valve body. The valve can be any a valve such as a butterfly gate, a brake valve, or a ball valve and the like. After the puncture needle penetrates into the blood vessel, the valve is opened, the blood effusing from the mouth of the valve is observed; if the escaping blood is characterized by pulsation, large flow, rapid flow rate, the puncture needle penetrates into the artery, on the contrary, the puncture needle penetrates into the vein. The design of the valve greatly increases the safety of the operation when the centre vein blindly punctures, reduces the pain of patients, meanwhile, avoids the occurrence of the clinical complication, and can be widely applied to other all kinds of artery and vein puncture needles and increases the medical safety.

Description

【Technical field】: [0001] The invention belongs to the technical field of medical auxiliary devices, in particular to a central venous puncture needle. 【Background technique】: [0002] There are generally two types of central venous puncture needles used in the market. A puncture needle is similar to a common injection needle tube, and the guide wire is introduced from the tail of the puncture needle tube. Another kind of puncture needle is a Y-shaped venipuncture needle (also called side-piercing type), and the guide wire is introduced from the side of the puncture needle tube. The above two kinds of puncture needles are simple, thicker iron needle type puncture needles. When in use, the puncture needle is first injected into the vein, and then the guide wire is inserted. The disadvantage of these two methods is that the puncture needle penetrates into the blood vessel. After the blood is returned, it is only possible to judge whether the blood vessel pierced by the punctu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/34
Inventor 黄俊杰王为
Owner 天津博安医用有限公司
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