Patent · US Expired

Infusate pump

US4496343A · kind A · utility

69Cited by

6References

7Claims

0Family size

Assignee

Infusaid, Inc. · US

Inventors

Frank R. Prosl · Duxbury, US
Edward J. Sampson · Carlisle, US

Key dates

Filing date	Feb 6, 1984
Grant date	Jan 29, 1985
Priority date	—
Expiry date	Feb 6, 2004

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2039/0226
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

Infusion apparatus includes a housing with an infusate chamber in the housing and means for conducting infusate from the chamber through a restrictive outlet passage to an additional small chamber having an entrance port closed by a self-sealing penetrable septum. An exit tube from the small chamber leads directly to a cannula at the infusion site so that liquid can be injected into the small chamber through its septum and delivered directly to the infusion site without backflowing into the infusate chamber.

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