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Device for deep venipuncture permanent needle capable of accurately recognizing artery and vein

A technology for accurate identification of arteries and veins, applied in the field of medical equipment, can solve problems such as troublesome operation, difficulty in distinguishing arteries and veins, and wrong judgments, and achieve the effects of convenient operation, simple structure, and avoiding influence

Inactive Publication Date: 2008-11-05
李岩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the influence of indoor light and hypoxemia and other factors, it is difficult to distinguish the arteries and veins only by visually observing the blood color, and sometimes errors in judgment may occur; judging the arteries and veins by removing the syringe and observing the blood pressure, although the results Relatively reliable, but more troublesome to operate

Method used

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  • Device for deep venipuncture permanent needle capable of accurately recognizing artery and vein
  • Device for deep venipuncture permanent needle capable of accurately recognizing artery and vein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 is shown in Figure 1:

[0015] There is a tube 1 that is transparent and meets medical requirements. The pressure scale can be marked on the side wall of the tube 1. There is a pipe joint 2 at the front end of the tube 1. A spring 3 is built in the tube 1. The front end of the spring 3 is in contact with the piston 4. Then, the pipe 1 at the rear end of the spring 3 is provided with a spring seat 5, and the spring seat 5 has a hole 6 communicating with the inner chamber of the pipe 1.

[0016] When in use, the pipe joint 2 of the embodiment of the present invention is connected to the needle, and when the existing deep vein puncture needle enters the blood vessel, the needle is inserted into the threading catheter of the existing puncture tube device, and the blood drawn back will enter the tube through the needle. 1, the piston 4 reaches an equilibrium point under the double action of the blood pressure entering the tube 1 and the spring, so the pressure o...

Embodiment 2

[0017] Embodiment 2 is shown in Figure 2:

[0018] The basic structure is the same as that of Example 1, except that the tube 1 is covered with an injection tube 7, and the tube 1 is movably matched with the inner wall of the injection tube 7, and the pipe joint 2 is connected to the front end of the injection tube 7; The front end of 1 is connected with a head 8, through which the pipe 1 moves with the injection tube 7, and the head 8 has a through hole 9 communicating with the inner cavity of the pipe 1.

[0019] When in use, the existing deep vein puncture needle is connected to the pipe joint 2 through the connecting tube 14. After the deep vein puncture needle enters the blood vessel, the blood drawn back will enter the tube 1 through the needle, and the blood pressure of the piston 4 entering the tube 1 and A balance point is reached under the double action of the spring, and the pressure (intravascular pressure) entering the blood can be measured according to the pressu...

Embodiment 3

[0020] Example 3 as image 3 Shown:

[0021] The basic structure is the same as in Embodiment 1, except that an injection tube 7 is adjacent to the tube 1, and a tube core 10 is built in the injection tube 7. Connect with cover 11 simultaneously, and described pipe joint 2 is to join with cover 11; Described cover 11 can be three-way pipe joint, is divided into in cover 11 and communicates with pipe 1, injection tube 7 respectively. Channel 12, 13.

[0022] When in use, the existing deep vein puncture needle is connected to the pipe joint 2 through the connecting tube 14. After the deep vein puncture needle enters the blood vessel, the blood drawn back will enter the cover 11 through the needle. Tube 1, the other way enters injection tube 7 through channel 13, and piston 4 reaches a balance point under the double action of the blood pressure entering tube 1 and the spring, so the pressure of entering blood can be measured according to the pressure mark on tube 1 ( Intravascu...

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Abstract

The invention discloses a device that can identify artery and vein accurately, is used for deep venipuncture and catheterization and is characterized in that: the device is provided with a tube (1) the front end of which is provided with a union joint (2); a spring (3) is arranged in the tube (1) and the front end of the spring (3) is connected with a piston (4); a spring seat (5) is arranged on the tube (1) at the rear end of the spring (3) and a through hole (6) that is communicated with the intracavity of the tube (1) is arranged on the spring seat (5). The device is simple in structure and convenient in operation and can observe the blood pressure and blood fluctuation without unloading an injector, thus the blood vessel into which a puncture needle is inserted is vein or artery can be accurately identified so as to conduct catheterization operation quickly and avoid the influence on artery and vein identification caused by such factors as light indoor and hypoxaemia to reduce the suffering of sufferers resulted from misjudgement of artery and vein.

Description

Technical field: [0001] The invention relates to a medical appliance, in particular to a device for deep vein puncture and tube placement that can accurately identify arteries and veins. Background technique: [0002] In medical procedures, it is often necessary to perform deep venous catheterization on patients. Present deep vein puncture catheterization device is to be provided with the syringe that is made of injection tube, stylet and pipe joint, and puncture needle joins with pipe joint through connecting tube, and the side of connecting tube also connects (passes through) with threading catheter. When puncturing the catheter, first insert the puncture needle into the "vein" (determined based on experience) blood vessel, withdraw blood, and then observe the color of the blood with the naked eye or unload the syringe to confirm the "vein" by observing the blood pressure; when confirmed When the blood vessel entered by the puncture needle is a vein, the guide wire is pas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/48A61M5/00A61B5/00
Inventor 李岩
Owner 李岩
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