Self-sealing venous indwelling needle provided with coaxial outer casing tube

A technology for venous indwelling needles and overtubes, which is applied in the direction of needles and instruments introduced into the body, which can solve problems such as the uncertain effect of "cannula sealing", and achieve the effects of saving intellectual costs, prolonging the use time, and saving manpower and material resources

Active Publication Date: 2015-03-11
西藏多欣健康科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] There are other methods of setting anti-reflux mechanical valves and duckbill one-way openings at the tip of the catheter. Due to the uncertain effect of "sealing the tube", they have not been recommended in the "Standards for Intravenous Infusion Practice" after being on the market for many years. These products are not recommended in the market. no trace on

Method used

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  • Self-sealing venous indwelling needle provided with coaxial outer casing tube
  • Self-sealing venous indwelling needle provided with coaxial outer casing tube
  • Self-sealing venous indwelling needle provided with coaxial outer casing tube

Examples

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Effect test

Embodiment 1

[0069] Example 1: The self-sealing venous indwelling needle with coaxial overtube of the present invention

[0070] The coaxial overtube self-sealing venous indwelling needle includes an upper part A and a lower end part B of the self-sealing venous indwelling needle. The self-sealing venous indwelling needle consists of an outer tube 1, an inner tube 2, a working fluid sac 3, and an infusion chamber 4 , The flexible connecting tube 5, the pressure block 6, the pressure-resistant liquid sac 7, the lock buckle 8, the needle seat 9, the infusion tube 10, the needle tip groove 11, the tube bottom 12 and the liquid sac tube 13.

[0071] The upper part A of the self-sealing intravenous indwelling needle is composed of an outer tube 1 and an inner tube 2, wherein the inner tube 2 is placed in the outer tube 1, the inner wall of the inner tube 2 constitutes the infusion cavity 4, and the outer wall of the inner tube 2 and the end of the outer tube 1 are fused and sealed The needle tip gro...

Embodiment 2

[0076] Example 2: Self-sealing intravenous indwelling needle with coaxial overtube of the present invention

[0077] This embodiment is the same as that of Embodiment 1, except that distilled water is used as a working fluid, a rectangular parallelepiped pressure-resistant liquid bag 7, and the angle between the inner tube 2 and the infusion tube 10 is 130°. The angle between the sac tube 13 and the flexible connecting tube 5 is 100°.

[0078] Using the self-sealing intravenous indwelling device of this embodiment for patients suffering from "intracranial hypertension, hypertension, heart failure, nephropathy" for indwelling needle infusion and tube sealing. Such patients restrict the infusion of saline, and routine flushing and tube sealing will be input The extra sodium salt and liquid enter the body, and patients who use the sealing tube of the present invention avoid inputting too much salt and water. The operation of the present invention is extremely simple, the sealing of t...

Embodiment 3

[0079] Example 3: Self-sealing intravenous indwelling needle with coaxial overtube of the present invention

[0080] This embodiment is the same as that of Embodiment 1, except that the working fluid of physiological saline is used, the elliptical pressure-resistant sac 7, and the angle between the inner tube 2 and the infusion tube 10 is 100°. The angle between the sac tube 13 and the flexible connecting tube 5 is 108°.

[0081] Using the double-lumen tube self-sealing venous indwelling in this embodiment is used for indwelling needle infusion and tube sealing for patients with "long-term infusion" or "highly difficult venipuncture". Generally, the blood vessels that can be used for puncture and infusion are difficult to find in such patients. Repeated puncture has been degeneration, each venous puncture is extremely difficult, and the patient is extremely painful. Therefore, each intravenous infusion channel should be kept unobstructed, and the use of the infusion channel can be ...

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Abstract

The invention relates to a self-sealing venous indwelling needle provided with a coaxial outer casing tube. The self-sealing venous indwelling needle comprises an outer tube 1, an inner tube 2, a working liquid bag 3, an infusion cavity 4, a flexible connecting tube 5, a pressurizing block 6, a pressure-resistant liquid bag 7, lock catches 8, a needle seat 9, an infusion tube 10, a needle point groove 11, a tube bottom 12 and a liquid bag pipeline 13. The self-sealing venous indwelling needle provided with the coaxial outer casing tube is very simple to operate, tube sealing is finished under the condition that a working liquid is completely sealed, no pollutant enters, the needle can be used continuously without complications such as secondary injuries to veins, liquid leakage, phlebitis, venous thrombosis and the like, and a patient feels comfortable. Disposable syringes and flushers are not consumed, nursing operation steps are reduced, and the nursing efficiency and the nursing quality are improved.

Description

【Technical Field】 [0001] The invention belongs to the technical field of medical devices. More specifically, the present invention relates to a coaxial overtube self-sealing intravenous indwelling needle. 【Background technique】 [0002] In 2013, the consumption of large intravenous infusion in my country was 10.4 billion bottles, the consumption of intravenous infusion devices was 3 billion sets, and the consumption of intravenous indwelling needles was more than 300 million. They are mainly produced by the joint ventures of American BD Company, the joint ventures of Braun Company, Shandong Weigao Company and Suzhou Linhua Company. [0003] The intravenous indwelling needle is also called an intravenous trocar, which consists of a stainless steel needle core, an outer tube and a plastic needle seat. During puncture, the stainless steel needle core and the outer tube are pierced into the blood vessel together. After entering the blood vessel, the stainless steel needle core is wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/158
CPCA61M5/158
Inventor 邓杜娟
Owner 西藏多欣健康科技有限公司
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