Patent · US Active

Blood pump with expandable cannula

US8684904B2 · kind B2 · utility

130Cited by

247References

29Claims

0Family size

Assignees

Thoratec Corporation · US
The Penn State Research Foundation · US

Inventors

Robert L. Campbell · Port Matilda, US
Justin M. Walsh · Spring Mills, US
Daniel Metrey · Blacksburg, US
Robert F. Kunz · State College, US
Thomas M. Mallison · State College, US
Edward Boone · Pennsylvania Furnace, US
Eric C. Myer · Spring Mills, US
Mark W. McBride · Bellefonte, US
Kevin J. Powell · Glen Gardner, US
Daniel A. Walters · Denville, US

Key dates

Filing date	Aug 15, 2013
Grant date	Apr 1, 2014
Priority date	—
Expiry date	Aug 15, 2033

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M60/857
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A blood pump includes an impeller having a plurality of foldable blades and a cannula having a proximal portion with a fixed diameter, and a distal portion with an expandable diameter. The impeller can reside in the expandable portion of the cannula. The cannula has a collapsed condition for percutaneous delivery to a desired location within the body, and an expanded condition in which the impeller can rotate to pump blood. A flexible drive shaft can extend through the cannula for rotationally driving the impeller within the patient's body.

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