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Metal inner needle of detention needle and the detention needle using same

A technology of indwelling needles and metals, applied in the field of indwelling needles, can solve the problems of large blood return flow and contamination of the indwelling needle body, etc., and achieve the effect of simplifying the operation process, reducing the difficulty of processing, and increasing the selection opportunities

Inactive Publication Date: 2006-12-13
ENOMOTO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects and deficiencies of the prior art, the present invention designs a new type of metal inner needle for indwelling needle and the indwelling needle adopting the metal inner needle. In the existing indwelling needles, ordinary metal needles for injections have the disadvantages of bringing air into the blood vessel during infusion or blood transfusion, and easily polluting the indwelling needle body and large blood return flow during the blood return confirmation operation.

Method used

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  • Metal inner needle of detention needle and the detention needle using same
  • Metal inner needle of detention needle and the detention needle using same
  • Metal inner needle of detention needle and the detention needle using same

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Such as figure 1 , figure 2 Shown is a schematic structural view of the needle body 1 as a solid metal inner needle. The front end of the needle body 1 is an inclined section 2. The front end of the section 2 and the outer surface of the needle body 1 form a sharp front, which can smoothly penetrate into the patient's blood vessel. The needle body 1 is vertically straight and provided with a section of cut surface 3, of course the cut surface 3 can also have a certain inclination, the cut surface 3 is lower than the outer peripheral surface of the needle body 1, and the height δ of the cut surface 3 from the top of the outer circumference of the needle body is not greater than that of the needle body Radius size, δ is preferably in the range of 0.03 mm to 0.13 mm. The length of the cut surface 3 is preferably 3-10 mm.

[0024] When the solid needle body 1 i...

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Abstract

The provided metal inner needle for an indwelling needle comprises a body with a vertical tangent plane on front of the body outer. This invention can simplifies operation to blood-back identification, and avoids danger to introduce air into blood vessel.

Description

technical field [0001] The invention relates to a medical device, in particular to a metal inner needle used in an arteriovenous indwelling needle, which can eliminate gas in the indwelling needle and confirm blood return during puncture, and the indwelling needle adopting the metal inner needle. Background technique [0002] In the existing arteriovenous infusion apparatus, the application of the indwelling needle has very great positive significance for doctors and patients. It not only greatly reduces the pain of repeated punctures suffered by patients in the clinical operation of traditional non-indwelling needle infusion devices, but also greatly reduces the hidden danger of infection due to repeated punctures, and also effectively reduces the difficulty and difficulty of operation for infusion operators. strength. [0003] In the existing indwelling needles, the inner needle usually uses an ordinary metal needle for injection with a lumen to complete the initial blood...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/06A61M5/158A61M5/32
Inventor 细田光司大神田高贵
Owner ENOMOTO
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