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Inner sleeve type venepuncture remaining needle

An arteriovenous, cannula-type technology, applied in the field of medical devices, can solve problems such as increasing the pain of patients

Inactive Publication Date: 2017-06-20
THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In clinical practice, indwelling needle puncture failures often occur, and repeated operations greatly increase the pain of patients, especially for children with low tolerance

Method used

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  • Inner sleeve type venepuncture remaining needle
  • Inner sleeve type venepuncture remaining needle
  • Inner sleeve type venepuncture remaining needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Basic as attached figure 1 , figure 2 Shown: Cannulated arteriovenous catheter including:

[0026] The puncture part 1 is made of stainless steel. The puncture part 1 is hollow tubular. The front end of the puncture part 1 is provided with a wedge-shaped needle point. The side wall of the puncture part 1 is provided with a through groove 5 along the radial direction. the shortest point of the needle tip;

[0027] The handle 2 of plastic material is provided with an installation groove, and the puncture part 1 is fixed in the installation groove, and the length of the puncture part 1 exposed to the handle 2 is 3-6cm; the handle 2 of plastic material is provided with The installation groove, the puncture part 1 is fixed in the installation groove, and the length of the puncture part 1 extending out of the handle part 2 is 3-6cm. The connection part 6;

[0028] Hose needle 3 (eg Figure 4 As shown), the tail of the hose needle 3 is provided with a push plate 4 made o...

Embodiment 2

[0032] Compared with Embodiment 1, the only difference is that the handle part 2 is a cuboid, and the puncture part 1 is provided with a PVC material disposable seal, which covers the through groove 5 by bonding. When the medical personnel use the puncture part to puncture the patient's blood vessel, the seal will cover the through groove of the puncture part. At this time, the puncture part is a completed central passageway, which further prevents blood from gushing out from the through groove 5 of the puncture part 2. After the flexible tube needle 3 is left indwelling, the seal is torn, and the flexible tube needle and the puncture part are separated, and the flexible tube needle is left in place.

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PUM

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Abstract

The invention belongs to the field of medical devices, and particularly discloses an inner sleeve type venepuncture remaining needle. The remaining needle comprises a puncture part, a handheld part and a hose needle, wherein the puncture part is in a hollow tube shape, the front end of the puncture part is provided with an oblique-wedge-shaped needle tip, and a through groove is formed in the side wall of the puncture part in the radial direction; the handheld part is provided with an installation groove, the puncture part is fixed into the installation groove, and the front end of the puncture part extends out of the installation groove; the tail part of the hose needle is provided with a push plate made of a plastic material, the push plate is connected with the hose needle, the lower side face of the push plate and the lower side face of the hose needle are embedded into the through groove and in slide connection with the inner wall of the puncture part, the hose needle is communicated with a connecting part, and the upper portion of the connecting part is fixedly connected with the push plate. According to the technical problem that by means of an existing remaining needle, during puncture, although blood returning can be achieved, a hose needle is not placed in a blood vessel along with a steel needle core, the novel remaining needle capable of greatly improving the puncturing and remaining success rate is provided.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an inner cannula type arteriovenous puncture indwelling needle. Background technique [0002] Indwelling needle is a medical device that is often used in order to reduce the pain of patients and reduce the workload of medical staff when multiple infusion treatments are required within a certain period of time in medical treatment. In 2014, the National Health and Family Planning Commission issued the "Technical Operation Specifications for Intravenous Therapy and Nursing" in the form of industry standards, advocating the use of indwelling catheters in major hospitals. European and American countries only use steel needles to collect blood samples once for patients with thin blood vessels, and indwelling needles are used for other occasions. For patients undergoing surgery, in addition to the use of indwelling needles for intravenous infusion, continuous invasive arterial blood pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/158A61B17/34
CPCA61M5/158A61B17/34A61B17/3417A61B2017/3454A61M2005/1585
Inventor 顾健腾马剑波鲁开智易斌甯交琳
Owner THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA