Patent · US Expired

Injection cartridge

US5501673A · kind A · utility

25Cited by

5References

20Claims

0Family size

Assignee

Pharmacia AB · SE

Inventors

Birger Hjertman · Sundbyberg, SE
Gustav Levander · Bromma, SE
Olle Ljunquist · Bissenkamp, SE

Key dates

Filing date	Dec 8, 1994
Grant date	Mar 26, 1996
Priority date	—
Expiry date	Dec 8, 2014

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M5/2448
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An injection cartridge of the dual-chamber type has a bypass connection between its two chambers which is arranged such that the interior wall of the cartridge is modified in a determined area in such a way that the movable wall between the two chambers does not seal completely against the interior wall in said area.

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