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

Auto-injection syringe having vent device

By introducing a vent device and a porous plastic end cap into the automatic syringe, the problem of difficulty in assembling the syringe and the separation of the validity period of the medicine box in the existing technology is solved, achieving rapid assembly and resource optimization, ensuring the disinfection and sterility of the syringe, and improving To ensure safety and efficiency of use.

Active Publication Date: 2008-10-08
WEST PHARMACEUTICAL SERVICES INC
View PDF2 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Sterilization and aseptic maintenance of the fluid pathway prior to use of this device has proven to be more difficult than existing devices
Moreover, the assembly of such devices has proven to be time-consuming and expensive

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Refer to the attached drawings, especially Figure 1-3 , An exemplary embodiment of the automatic injection syringe 10 according to the present invention is shown. When triggered, the syringe 10 is suitable to automatically extend the hypodermic needle from the assembly and enter the muscle tissue at the injection position, thereby injecting a single, predictive amount of drug dose, and can automatically retract the hypodermic needle after the injection is completed. It returns to the component.

[0018] Advantageously, the syringe 10 includes one or more sealed areas including vents that allow these areas to equalize pressure or vent between the sealed area and the environment outside the syringe, thereby preventing contamination (e.g., particles, bacteria, etc.) entering the sealed area. , Viruses, etc.). It can be determined that when exposed to various environmental conditions during transportation, usually when being carried and stored by a user, the ventilation device ...

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

An auto-injection syringe is provided that includes an injection assembly and a retraction assembly operatively securable to the injection assembly. The retraction assembly includes a hypodermic needle having a needle hub, an end cap having a lower seal through which a portion of the hypodermic needle can pass, a retraction spring disposed between the needle hub and the end cap and maintained in a partially compressed condition therebetween, an upper seal urged against a facially sealing surface of the retraction assembly by the force of the retraction spring on the needle hub so that a sealed area is defined between the upper and lower seals, and a vent device in fluid communication with the sealed area for pressure equalization between the sealed area and an exterior of the retraction assembly.

Description

Technical field [0001] The invention relates to an automatic injection syringe. More precisely, it relates to an automatic injection syringe with a ventilation device. Background technique [0002] Diseases such as AIDS, hepatitis and other diseases are increasing in the general population. This has led to a continuing trend to use specialized products that prevent the risk of accidental needle stick injuries. Many existing devices in the field include self-retracting needles to reduce accidental needle stick injuries. [0003] In many life-threatening conditions, such as anaphylactic shock, and exposure to chemical, radioactive and biological weapons, automatic injection syringes are required. A typical automatic injection syringe allows users without medical training to automatically inject drugs by manually triggering the automatic injection function. Some existing automatic injection syringes also include self-shrinking needles. [0004] The disinfection and aseptic maintenan...

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 Applications(China)
IPC IPC(8): A61M5/20A61M5/28
CPCA61M2005/206A61M5/3202A61M5/2459A61M2005/31516A61M5/2466A61M5/2033A61M2005/3123A61M5/326A61M2005/247
Owner WEST PHARMACEUTICAL SERVICES INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com