Painless syringe

A technology for syringes and components, applied in the field of medical devices, can solve the problems of high injection cost and many auxiliary facilities, and achieve the effects of optimizing experimental technology, reducing contact area, and accelerating injection speed

Inactive Publication Date: 2006-05-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the large number of auxiliary facilities and high injection costs,

Method used

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Experimental program
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Embodiment Construction

[0015] The specific content and implementation of the present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0016] refer to figure 1 : Schematic diagram of the full arrangement of elliptical pits in the non-smooth unit body. The non-smooth unit body is in the form of an elliptical pit, the short axis of the ellipse, the pit depth and the center distance between the ellipse can be changed, the short axis of the ellipse varies from 0.4mm to 0.6mm, and the pit depth varies from 0.05mm~0.08mm, the range of center distance is 1.0mm~1.5mm, gradually shrink or enlarge. The cross section of the elliptical pit can be an elliptical cylindrical pit or an ellipsoidal pit; the non-smooth units can be distributed on the surface of the acupuncture part as a whole, or between 3mm and 25mm from the needle tip. Specific parameters are available:

[0017] Pit depth h=0.05mm, ellipse long axis a=0.7mm, minor axis b=0.4mm, ...

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PUM

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Abstract

The invention relates to a medical appliance, especially relating to an indolence injector. The invention is purposed to provide an indolence injector with simple structure and reasonable designed surface injection needle according to the bionic theory. The bionic non-smooth surface feature indolence injector technique adds non-smooth surface feature units with a certain shape and relative distribution theory on the surface of injection needle on the surface of injection needle, to transform the smooth feature of former needle to the non-smooth feature. The surface of needle of indolence injector has uniformly distributed non-smooth units while their shape can be ellipse concave, round concave, wave or saw-tooth; the distributed feature can be that covering the whole surface of element or covering one or several areas of element; the non-smooth units different diameters, pitches and processing depth while every two units have different center distance.

Description

Technical field: [0001] The invention relates to a medical appliance, in particular to a painless syringe. Background technique: [0002] Going to the hospital for injections, blood tests, acupuncture, and sutures after surgery is a daunting thing, especially for those patients who need long-term injections. Why is the injection so creepy? This comes from the burning pain in the bone during the injection. Injection pain is due to the fact that the syringe adopts a cylindrical structure with a very smooth outer surface. When injecting, the needle penetrates the human skin, and its outer surface is in close contact with the skin tissue. The larger the contact area, the stronger the pain. At the same time, when the injection needle penetrates the skin, many metal particles will be left behind, which will strongly stimulate the nerves and cause a strong sense of pain. Making injections "painless" is the dream of every patient. In order to solve this problem, at present, ther...

Claims

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Application Information

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IPC IPC(8): A61M5/32A61M5/178
Inventor 任露泉王京春丛茜邱小明赵寿经陈丽莉
Owner JILIN UNIV
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