Unlock instant, AI-driven research and patent intelligence for your innovation.

Needle-free injection device equipped with a diaphragm for improved sealing

A technology of needle-free injection and equipment, applied in the direction of syringes, auto-injectors, hypodermic injection devices, etc., which can solve problems such as leakage, damage to seals, etc.

Active Publication Date: 2020-07-10
CROSSJECT
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Such deformation of the disc may compromise the seal between the diaphragm and the body of the device, resulting in leakage

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Needle-free injection device equipped with a diaphragm for improved sealing
  • Needle-free injection device equipped with a diaphragm for improved sealing
  • Needle-free injection device equipped with a diaphragm for improved sealing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] In the description and claims, for clarity of the description and claims, the terms longitudinal, vertical and transverse will be used without limitation with reference to the trihedron L, V, T indicated in the figures.

[0059] Additionally, in the present invention, the terms "upper", "lower", "horizontal", "vertical" and their derivatives refer to the position or orientation of an element or part, with reference to the orientation of the device in the drawings and with reference to three The planes L, V, T take this position or orientation into account without reference to the Earth's gravity.

[0060] Similarly, the terms "axial" and "radial" are to be understood with reference to the injection axis B of the injection device.

[0061] figure 1There is shown a needle-free injection device 10, or needle-free injector, comprising a U-shaped body 12 comprising in succession an impact device 14, a gas generator 16 comprising a primer 18 and a pyrotechnic charge 20, an e...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a needle-free injection device (10) comprising: a body (12) forming a container (44) delimited by a tubular wall (46) and from which an upper radial seat (48) extending axially; a gas generator (16); a tubular reservoir (24) enclosing the active ingredient (26) and the reservoir (24) in the extending axially from an upper end forming an upper flange (40) to a lower end (36) in the container (44); a generally T-shaped elastically deformable diaphragm (50) comprising an axially A radial annular disk (52) interposed between the upper flange (40) of the reservoir (24) and said seat (48) and a tubular portion extending axially in the reservoir (24) (54), characterized in that it comprises an annular gasket (64) placed axially on the annular disk (52) of the diaphragm (50) and on the upper projection of the reservoir (24) Between edge (40).

Description

technical field [0001] The present invention relates to a needle-free injection device comprising a flexible membrane with an improved seal. Background technique [0002] The technical field of the invention is disposable prefilled needle-free injection devices operated with an energy source such as a gas generator and used in human or veterinary medicine for therapeutic Intradermal, subcutaneous and intramuscular injections of liquid active ingredients. [0003] The active ingredients consist of more or less viscous liquids, liquid mixtures or gels. The active ingredient may also be a solid dissolved in a solvent suitable for injection, or may consist of a powdered solid suspended at a particular concentration in a suitable liquid. The particle size distribution of the active ingredient must then be matched to the diameter of the catheter to avoid clogging the catheter. [0004] In a known manner, for example in patent application FR-A-2815544 (equivalent to WO02 / 34317),...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/30A61M5/20
CPCA61M5/2046A61M5/2053A61M5/30
Inventor 马比勒·弗雷德里克罗宾·斯坦伯格
Owner CROSSJECT