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Low damage syringe needle

A technique for injection needles and trauma, applied to needles, instruments introduced into the body, etc., can solve problems such as safety hazards, and achieve the effects of reducing pain, fast healing, and avoiding cutting and friction

Inactive Publication Date: 2012-11-07
陈京江 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the perforation is arranged on the inclined cone surface, when the painless needle penetrates into the skin of the human body, the opening direction of the part of the perforation on the inclined cone surface is facing the direction in which the needle penetrates the skin, and there is still a small There is a certain safety hazard in cutting the flesh and meat

Method used

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  • Low damage syringe needle
  • Low damage syringe needle
  • Low damage syringe needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] like figure 1 and 2 As shown, a low-trauma injection needle includes a tubular needle shaft 1 and a needle point 2 located at the end of the needle shaft 1. The needle point 2 is in the shape of a conical tube, and the two sides of the needle point 2 have two recessed surfaces 2a. 2a are all ellipsoidal concave surfaces and the relief concave surface 2a all smoothly transitions with the side wall of the needle bar 1, and the relief concave surface 2a is provided with a medicine outlet hole 2b communicating with the cavity of the needle tip 2, and the medicine outlet hole 2b The axial projection is elliptical. The drug outlet hole 2b is located at the side of the needle point 2 and its side wall is flush with the top of the cavity of the needle point 2 . The axis of the medicine outlet hole 2b is set perpendicular to the side wall corresponding to the needle point 2, so that the generation of burrs can be avoided when the medicine outlet hole 2b is processed. The coni...

Embodiment 2

[0038] The structure and principle of this embodiment are basically the same as that of Embodiment 1, the difference is that: image 3 As shown, one side of the needle point 2 has a relief concave surface 2a, and the side wall of the medicine outlet hole 2b on the relief concave surface 2a is flush with the top of the cavity of the needle point 2; the other side of the needle point 2 There is another relief concave surface 2a located at the junction of the needle point 2 and the needle shaft 1, and the medicine outlet hole 2b of the relief concave surface 2a is located at the junction of the needle point 2 and the needle shaft 1. The relief concave surface 2a in this embodiment is a flat concave surface, and the flat concave surface and the side wall of the needle tip 2 all have a smooth transition.

[0039] The medicine outlet hole 2b is located at the connecting part of the needle tip 2 and the needle tube 1, so that the diameter of the medicine outlet hole 2b is relatively ...

Embodiment 3

[0041] The structure and principle of this embodiment are basically the same as that of Embodiment 1, the difference is that: Figure 4 As shown, one side of the needle point 2 has a relief concave surface 2a, and the side wall of the medicine outlet hole 2b on the relief concave surface 2a is flush with the top of the cavity of the needle point 2; the other side of the needle point 2 There is another relief concave surface 2a on the upper part, and the relief concave surface 2a is located at the connecting part of the needle bar 1 and the needle tip 2 .

[0042] The cone tip of the needle point 2 has an inclined slope 2d, and the slope 2d is inclined towards the inside of the cone point, so that the cone point of the needle point 2 is sharper and can penetrate into the skin tissue of the human body relatively easily, reducing the pain of the patient. The fine grinding of the bevel 2d can remove the burr on the cone tip of the needle point 2 .

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Abstract

The invention provides a low damage syringe needle, belongs to the technical field of medical equipment, and solves the problem that the existing needles cut a small piece of flesh when stabbing into human skin. The low hurting syringe needle comprises a tubular needle bar and a needle point arranged at the end portion of the needle bar, the needle bar and the needle point are integrally produced, the needle point is in a conical tube shape and provided with a yielding concave surface on the side, the yielding concave surface with the side wall of the needle point and / or the side wall of a connecting portion of the needle point with the needle bar are in a smooth transition, and a medicine outlet hole communicated with a cavity of the needle point is opened on the abdicating concave surface. The low damage syringe needle has the advantages that cutting damage is not generated for human body tissues and the utilization is safe.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to an injection needle, in particular to a low trauma injection needle. Background technique [0002] The needle point of the existing human body injection needle is all cut and ground into an inclined plane at the front end of the needle body of the thin-walled tube. The needle point of this form still forms a sharp edge because the inner wall and the inclined surface of the second half of the needle point can cut off the passing skin and flesh tissue. Therefore, when the existing injection needles are in use, there is a possibility that a piece of skin and flesh tissue directly passing through the inner hole of the needle may be cut off and imported into the body. Although this phenomenon has not been noticed by people for many years, it does not mean that there is no harm. For intramuscular injection, the sharp edge of the needle tip cuts off the muscle fibers and nerves,...

Claims

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Application Information

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IPC IPC(8): A61M5/32
Inventor 陈京江陈京峰
Owner 陈京江