Robert D Pugh

US Patent:

50108824, Apr 30, 1991

Filed:

Nov 13, 1989

Appl. No.:

7/435641

Inventors:

Mark Polyak - Minnetonka MN
Robert W. Pugh - Lakeville MN

Assignee:

American Medical Systems, Inc. - Minnetonka MN

International Classification:

A61F 226

US Classification:

128 79

Abstract:

A penile prosthesis implantable within the corpus cavernosum of the penis in order to alleviate erectile impotency includes a unique deflation valve mechanism for returning the prosthesis from the erect to the flaccid state. In its preferred embodiment the prosthesis is of a unitary type comprising a distal portion including a pump, a medial portion defining a pressurizable chamber comprising an internal, tubular, substantially non-distensible portion and a concentric tubular sleeve, and a proximal portion including a fluid reservoir, the latter being in fluid communication with the pump. The deflation valve mechanism is activated in accordance with pressure differential conditions within the valve and a movable or distensible partition capable of exerting an internal force within the valve to place the valve in an open mode, thereby effecting the deflation of the prosthesis or hydraulic system in which the valve mechanism is present. Apparatus for extending the length of the prosthesis are also provided.

US Patent:

47908106, Dec 13, 1988

Filed:

Nov 4, 1985

Appl. No.:

6/794575

Inventors:

Robert W. Pugh - Lakeville MN
Dezso K. Levius - Bloomington MN

Assignee:

American Medical Systems, Inc. - Minnetonka MN

International Classification:

A61M 2500

US Classification:

604 8

Abstract:

A connector stent of adjustable length is provided for draining fluid through a biological passage. The connector stent comprises an elongated tubular member and a connector. A retaining means is disposed at one end of the elongated tubular member, the other end being straight. A retaining means is disposed at one end of the connector, the other end being adapted to engage the straight end of the elongated tubular member. The straight end of the elongated tubular member may be cut to a desired length before engaging the connector so that the length of the connector stent corresponds to the length of the fluid passageway to be drained.

US Patent:

45949980, Jun 17, 1986

Filed:

Sep 16, 1983

Appl. No.:

6/533527

Inventors:

Christopher H. Porter - Minnetonka MN
Gregory D. Giter - Plymouth MN
Robert W. Pugh - Lakeville MN

Assignee:

American Medical Systems, Inc. - Minnetonka MN

International Classification:

A61F 500

US Classification:

128 79

Abstract:

An implantable penile prosthesis for overcoming male erectile impotence in the form of an elongated cylindrical device of malleable construction. The device is adapted to be implanted within the corpora cavernosa of the penis. A malleable rod capable of holding any shape to which it is bent is encapsulated within a cylindrical insert member made of biocompatible, flexible material. A thin walled sleeve of predetermined wall thickness may be positioned over the outside of the cylindrical insert member in covering relation thereto for adjustment of the outside diameter of the implant device. The cylindrical insert member tapers along its distal end section towards the distal end extremity of the device.

US Patent:

52639819, Nov 23, 1993

Filed:

Apr 24, 1992

Appl. No.:

7/873473

Inventors:

Mark Polyak - Minnetonka MN
Robert W. Pugh - Lakeville MN

Assignee:

American Medical Systems, Inc. - Minnetonka MN

International Classification:

A61F 226

US Classification:

623 12

Abstract:

A penile prosthesis for alleviating erectile impotency includes a generally tubular enclosure which is implantable within the corpus cavernosum. The tubular enclosure includes a generally non-distensible pressurizable chamber which when filled with fluid substantially to capacity will transform the prosthesis from the flaccid to an erect state, and a unique inflation valve assembly comprising two valves in longitudinally sequential relationship which will open or close under sequentially applied pressure differential conditions. The prosthesis includes a pump implantable in the body apart from the tubular enclosure, preferably in the scrotum, and a deflation valve.