David M Lederman

US Patent:

6508756, Jan 21, 2003

Filed:

Dec 30, 1998

Appl. No.:

09/223645

Inventors:

Robert T. V. Kung - Auburn MA
David M. Lederman - Marblehead MA
Meir Rosenberg - Newton MA

Assignee:

Abiomed, Inc. - Danvers MA

International Classification:

A61F 202

US Classification:

600 37

Abstract:

Artificial implantable active and passive girdles include a heart assist system with an artificial myocardium employing a number of flexible, non-distensible tubes with the walls along their long axes connected in series to form a cuff and a passive girdle is wrapped around a heart muscle which has dilatation of a ventricle to conform to the size and shape of the heart and to constrain the dilatation during diastole. The passive girdle is formed of a material and structure that does not expand away from the heart but may, over an extended period of time be decreased in size as dilatation decreases.

US Patent:

20030088151, May 8, 2003

Filed:

Dec 13, 2002

Appl. No.:

10/318884

Inventors:

Robert Kung - Andover MA, US
David Lederman - Marblehead MA, US
Meir Rosenberg - Newton MA, US

Assignee:

ABIOMED, INC. - Danvers MA

International Classification:

A61F002/02

US Classification:

600/037000

Abstract:

Artificial implantable active and passive girdles include a heart assist system with an artificial myocardium employing a number of flexible, non-distensible tubes with the walls along their long axes connected in series to form a cuff and a passive girdle is wrapped around a heart muscle which has dilatation of a ventricle to conform to the size and shape of the heart and to constrain the dilatation during diastole. The passive girdle is formed of a material and structure that does not expand away from the heart but may, over an extended period of time be decreased in size as dilatation decreases.

US Patent:

58005285, Sep 1, 1998

Filed:

Dec 29, 1995

Appl. No.:

8/581051

Inventors:

David M. Lederman - Marblehead MA
Robert T. V. Kung - Auburn MA

Assignee:

Abiomed R & D, Inc. - Danvers MA

International Classification:

A61F 204

US Classification:

623 3

Abstract:

A passive girdle is wrapped around a heart muscle which has dilatation of a ventricle to conform to the size and shape of the heart and to constrain the dilatation during diastole. The girdle is formed of a material and structure that does not expand away from the heart but may, over an extended period of time be decreased in size as dilatation decreases.

US Patent:

49022725, Feb 20, 1990

Filed:

Jun 17, 1987

Appl. No.:

7/063648

Inventors:

Fredric L. Milder - Brookline MA
Robert T. V. Kung - Andover MA
David M. Lederman - Marblehead MA
Param I. Singh - Lexington MA

Assignee:

Abiomed Cardiovascular, Inc. - Danvers MA

International Classification:

A61B 1900

US Classification:

600 18

Abstract:

An intra-arterial cardiac support system including multiple balloons for placement in the descending aorta with one balloon serving as a pumping balloon and one or more balloons serving as valve balloons, at least one of the valve balloons being positioned distal to the natural heart. The balloons are individually inflated and deflated to provide for sequential pumping action, with the sequence operating in timed relation to the sytstole and diastole of the natural heart.

US Patent:

62245406, May 1, 2001

Filed:

Feb 13, 1998

Appl. No.:

9/023592

Inventors:

David M. Lederman - Marblehead MA
Robert T. V. Kung - Auburn MA

Assignee:

Abiomed, Inc. - Danvers MA

International Classification:

A61F 204

US Classification:

600 37

Abstract:

A passive girdle is wrapped around a heart muscle which has dilatation of a ventricle to conform to the size and shape of the heart and to constrain the dilatation during diastole. The girdle is formed of a material and structure that does not expand away from the heart but may, over an extended period of time be decreased in size as dilatation decreases.

US Patent:

62103180, Apr 3, 2001

Filed:

Mar 9, 1999

Appl. No.:

9/264943

Inventors:

David M. Lederman - Marblehead MA

Assignee:

Abiomed, Inc. - Danvers MA

International Classification:

A61M 112

US Classification:

600 18

Abstract:

A balloon pump system including catheter-mounted pumping balloon configured to be positioned within a desired body passageway to pump a fluid through the body passageway. A stent is percutaneously deployed within the body passageway. The pumping balloon is percutaneously deployed within the stent such that the stent is interposed between the pumping balloon and the walls of the body passageway. The stent substantially limits the compliance of the body passageway, preventing the passageway in the vicinity of the pumping balloon from significantly expanding or contracting in response to forces generated by inflation and deflation of the pumping balloon. As a result, a volume of fluid substantially equivalent to a change in volume of the pumping balloon is displaced when the pumping balloon is inflated or deflated.

US Patent:

48880094, Dec 19, 1989

Filed:

Oct 31, 1986

Appl. No.:

6/926816

Inventors:

David M. Lederman - Marblehead MA
Param I. Singh - Lexington MA
Clair L. Strohl - Norfolk MA

Assignee:

Abiomed, Inc. - Danvers MA

International Classification:

A61F 224

US Classification:

623 2

Abstract:

A prosthetic heart valve comprises a suture ring supporting a stent which surrounds a conduit bearing a plurality of flexible valve leaflets. The conduit extends beyond the end of the suture ring.