Suction-cup needleless injector

A needle-free injection and suction cup technology, which can be used in syringes, hypodermic injection devices, and injectors by jet action, etc., can solve problems such as insufficient comprehensiveness, imperfection, and insufficient consideration of absorption and participation in cooperation.

Active Publication Date: 2007-08-08
杨运泰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The former invention only considered unilaterally from the perspective of the applicator, carefully studied and improved the injection power mode of the syringe, and did not fully consider the absorption and participation of the receptors such as skin, subcutaneous or muscle, and to realize that no needle penetrates the skin so that The purpose of bringing the active ingredient to the part where it should work requires consideration of both the applicator and the acceptor, so the above plans are not perfect and comprehensive enough

Method used

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  • Suction-cup needleless injector
  • Suction-cup needleless injector

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] The device described in Example 1 is composed of three parts: a suction cup, an injection device and a suction and decompression device.

[0020] An injection device: composed of an injection cartridge 8, an injection piston 7, and an injection piston rod 6.

[0021] The shape of the injection cartridge 8 is a barrel with an open end, its thickness is uniform, and the head end is closed inward, forming a kind of

[0022] Conical shape, filled with injection liquid, and then the liquid is sealed in the cartridge 8 by the piston 7.

[0023] A hole 9 is opened at the head end of the injection cartridge 8, and a piston 7 is installed in the tail end, which is sleeved on the piston rod 6 and can slide back and forth along the piston rod 6.

[0024] The injection cartridge 8 is filled with injection liquid, and after the piston 7 is installed at the rear end, it can be separated from the suction cup body 5 and the piston rod 6 and placed independently, and then installed on ...

Embodiment approach

[0037] Open the protective cover 10 and buckle the mouth of the suction cup on the skin. At this time, the head end of the injection cartridge 8 is just pressed against the skin, and the injection hole 9 is sealed and pressed by the skin.

[0038] Rotate the helical tube 2 to move the upper cover of the top pressure suction and decompression piston 1 upward, thereby driving the suction and decompression piston 1 to move upward, causing the volume in the cylinder to increase and the pressure to decrease, and pass through the bottom hole of the suction cup. 4. The suction cup body 5 also generates a pressure less than the external air pressure value—negative pressure.

[0039] Due to the action of the negative pressure in the suction cup body 5 , the skin 12 in the suction cup is sucked to bulge outward, and pushes the injection cartridge 8 to move backward along the piston rod 6 . The piston rod 6 is fixed, so that the piston 7 is pressed against the piston 7, so that the liqui...

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PUM

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Abstract

The invention relates to a non-needle injection method and relative device, formed by an adsorption cup, an adsorption depressurize device, and an injector, wherein, the cup clamps the skin; the depressurize device depressurizes the cup to form a passive area, to make the inner skin convex with increased volume and reduced inner pressure, to absorb nearby body fluid; at the same time, the piston of drug tube is fixed on the piston rod, and the convex skin will contact and press the injection drug tube to move it inwards along with the piston rod, to increase the liquid pressure in the drug tube, to be injected into the skin via the lower injection hole and absorbed. The invention has controllable drug consumption and injects several points at one time, without hurting the nerve organisms.

Description

technical field [0001] The present invention relates to the field of needleless syringes for intradermal, subcutaneous or intramuscular injection of liquid active ingredients for human medical or veterinary therapy. Background technique [0002] By definition, needleless injectors are non-invasive, ie no needle is passed through the skin to bring the active ingredient to the site where it is supposed to work. To achieve this, various injection methods and needle-free injectors have been devised. [0003] Patent CN94191721.5 describes a needleless injector for infusing particles with an ultrasonic gas stream, comprising a membrane (28) which ruptures under the action of air pressure to generate an ultrasonic gas stream that ejects particles containing a medicament. The injection power is ultrasonic air flow. [0004] Patent CN00810389.5 Needleless injector for use with a shock wave generator passing through one wall. The present invention relates to a needle-free injector ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/307A61M5/30A61M5/178
Inventor 杨运泰张春霞刘桂芝王洪芬陈光羽
Owner 杨运泰
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