Joseph D Bonn

US Patent:

53822307, Jan 17, 1995

Filed:

Dec 16, 1991

Appl. No.:

7/808003

Inventors:

Joseph Bonn - Strafford PA

Assignee:

Thomas Jefferson University - Philadelphia PA

International Classification:

A61M 100

US Classification:

604 32

Abstract:

A vascular access sheath is provided for introducing catheters, stents, and other interventional devices into blood vessels. The invention comprises a stiff tubular catheter segment, which is designed to remain outside the body, having two hemostatic valves, most preferably of an iris valve design disposed at each end. A flexible sheath extends from one of the valves for insertion into the blood vessel. In operation, the valves are opened and closed one at a time, to allow relatively large devices to be introduced into the blood vessel without the valve pressing against the devices and with minimal loss of blood.

US Patent:

57796815, Jul 14, 1998

Filed:

Dec 28, 1994

Appl. No.:

8/364966

Inventors:

Joseph Bonn - Strafford PA

Assignee:

Thomas Jefferson University - Philadelphia PA

International Classification:

A61M 5178

US Classification:

604167

Abstract:

A vascular access sheath is provided for introducing catheters, stents, and other interventional devices into blood vessels. The invention comprises a stiff tubular catheter segment, which is designed to remain outside the body, having two hemostatic valves, most preferably of an iris valve design disposed at each end. A flexible sheath extends from one of the valves for insertion into the blood vessel. In operation, the valves are opened and closed one at a time, to allow relatively large devices to be introduced into the blood vessel without the valve pressing against the devices and with minimal loss of blood.