Patent · US Active

Puncturable membrane for safety syringe

US8894618B2 · kind B2 · utility

1Cited by

1References

17Claims

0Family size

Assignee

Credence MedSystems, Inc. · US

Inventors

Jeffrey C. Smith · Menlo Park, US
Daniel Thayer · Mission Viejo, US

Key dates

Filing date	Mar 14, 2013
Grant date	Nov 25, 2014
Priority date	—
Expiry date	Mar 14, 2033

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M5/31511
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A safety syringe may define a variable fluid chamber and detached needle assembly. The variable fluid chamber may be hermetically sealed off from the environment or ambient air until the needle assembly is attached to a syringe body of the safety syringe. A proximal end of the variable fluid chamber is sealed off from the environment via a seal between a piston and syringe body. The distal end of the variable fluid chamber may be sealed off from the environment via a barrier covering the distal end of the syringe body. The barrier may be punctured to allow fluid to through therethrough at or about the same time when the needle assembly is attached to the distal end portion of the syringe body.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.