James Timothy Lock

US Patent:

54861934, Jan 23, 1996

Filed:

May 1, 1995

Appl. No.:

8/432971

Inventors:

George Bourne - Libertyville IL
Randall W. Davis - Chelmsford MA
George Duval - New Ipswich NH
Dennis Goodine - Dracut MA
James E. Lock - Newton MA
Gerry Ouellette - Framingham MA
Stanton B. Perry - Marblehead MA
Maria Wagner - Groton MA
Gregory R. Whittaker - Burlington MO

Assignee:

C. R. Bard, Inc. - Murray Hill NJ

International Classification:

A61M 2900

US Classification:

606194

Abstract:

A system for percutaneous transluminal front-end delivery of a collapsible prosthetic occluder includes a front-end loading portion, a control assembly and an introducer. The front-end loading portion includes a tapering lumen portion and a smaller diameter distal lumen portion. An infusion port communicates with the distal lumen portion immediately adjacent the distal end of the tapering lumen portion. A valve assembly seals the front-end loading portion lumen proximally of the collapsed occluder. The distal end of the front-end loading portion lumen is inserted into the proximal end of an introducer. A control assembly advances the occluder through the front-end loading portion, the introducer and into the defect site.

US Patent:

56265999, May 6, 1997

Filed:

May 1, 1995

Appl. No.:

8/431582

Inventors:

George Bourne - Libertyville IL
Randall W. Davis - Chelmsford MA
George Duval - New Ipswich NH
Dennis Goodine - Dracut MA
James E. Lock - Newton MA
Gerry Ouellette - Framingham MA
Stanton B. Perry - Marblehead MA
Maria S. Wagner - Groton MA
Gregory R. Whittaker - Burlington MO

International Classification:

A61M 2900

US Classification:

606194

Abstract:

A method for percutaneous transluminal front-end delivery of a collapsible prosthetic occluder using a front-end loading portion, a control assembly and an introducer sheath. The prosthetic device is collapsed in a lumen of a front-end loading portion. A valve assembly seals the front-end loading portion lumen proximally of the collapsed occluder. Fluid is then infused through a port extending into the front-end loading portion in communication with the front-end loading portion lumen to remove air bubbles from the collapsed prosthetic device. The prosthetic device is advanced using a control assembly from the front-end loading portion into the introducer and ultimately into the defect site.

US Patent:

56499507, Jul 22, 1997

Filed:

May 1, 1995

Appl. No.:

8/431451

Inventors:

George Bourne - Libertyville IL
Randall W. Davis - N. Chelmsford MA
George Duval - New Ipswich NH
Dennis Goodine - Dracut MA
James E. Lock - Newton MA
Gerry Ouellette - Framingham MA
Stanton B. Perry - Marblehead MA
Maria Wagner - Groton MA
Gregory R. Whittaker - Burlington MA

International Classification:

A61M 2900

US Classification:

606194

Abstract:

A system for percutaneous transluminal front-end delivery and retrieval of a collapsible prosthetic occluder includes a front-end loading portion, a control assembly and an introducer and retrieval sheath assembly. The front-end loading portion includes a tapering lumen portion and a smaller diameter distal lumen portion. An infusion port communicates with the distal lumen portion immediately adjacent the distal end of the tapering lumen portion. A valve assembly seals the front-end loading portion lumen proximally of the collapsed occluder. The distal end of the front-end loading portion lumen is inserted into the proximal end of an introducer and retrieval sheath assembly. A control assembly advances the occluder through the front-end loading portion, the introducer and retrieval sheath assembly and into the defect site. The retrieval sheath assembly is less flexible than the introducer sheath and is sufficiently rigid to evert the deployed occluder when retracted thereagainst.