Christopher W Sprague

US Patent:

20120192423, Aug 2, 2012

Filed:

Oct 14, 2010

Appl. No.:

13/500658

Inventors:

Ivan Vesely - Larkspur CO, US
Christopher Michael Sprague - Broomfield CO, US

International Classification:

B23P 6/00
B23P 19/00

US Classification:

29890121, 29700

Abstract:

A multi-function valve exchange apparatus including an alignment tool for locating tools of the multi-function valve exchange apparatus proximate to an installed cardiovascular valve assembly comprised of a base member and an exchangeable valve member detachably coupled thereto; a stabilizer tool for grabbing the base member and preventing the base member from moving during a procedure for exchanging the existing valve member with a new valve member; removal and collapsing tools for uncoupling and removing the existing valve member; and an installation tool for installing a new exchangeable valve member having a new leaflet set. A method for exchanging a valve member uses the multi-function valve exchange apparatus to facilitate removal of the existing exchangeable valve member and installation of the new exchangeable valve member.

US Patent:

20120203335, Aug 9, 2012

Filed:

Oct 13, 2010

Appl. No.:

13/500359

Inventors:

Ivan Vesely - Larkspur CO, US
Christopher Michael Sprague - Broomfield CO, US
Dean Carpenter - Boulder CO, US

International Classification:

A61F 2/24

US Classification:

623 218

Abstract:

A collapsible docking station for a valve assembly that includes the collapsible docking station and an exchangeable valve member detachably coupled thereto. The collapsible docking station includes a band that is moveable between a collapsed position where the band forms a wound coil, and a fully expanded position where the band forms a circular ring.

US Patent:

20140316519, Oct 23, 2014

Filed:

Nov 5, 2012

Appl. No.:

14/356323

Inventors:

- GREENWOOD VILLAGE CO, US
Todd D. Campbell - Petaluma CA, US
Christopher Michael Sprague - Broomfield CO, US
Dean Carpenter - Lafayette CO, US

Assignee:

VALVEXCHANGE, INC. - GREENWOOD VILLAGE CO

International Classification:

A61F 2/24

US Classification:

623 211

Abstract:

A tissue retraction system for a bioprosthetic cardiac valve base configured for attachment to a separate leaflet set includes a plurality of retraction shields releasably attached to the valve base. The retraction shields are configured to restrain tissue within a surgical site. The retraction shields may be flexible and transparent. Shield extenders can be attached to the retraction shields and used to further secure the retraction shields to a device for providing tissue retraction during a surgical procedure.