Carl R Turnquist

US Patent:

48176010, Apr 4, 1989

Filed:

May 6, 1987

Appl. No.:

7/047430

Inventors:

Laurence A. Roth - Londonderry NH
Stephen J. Herman - Andover MA
Carl R. Turnquist - Concord MA
Edward L. Sinofsky - Reading MA
Jacob Y. Wong - Santa Barbara CA

Assignee:

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

International Classification:

A61B 1736

US Classification:

1283031

Abstract:

A catheter for delivering radiant energy, such as a laser beam, is used in a technique to controllably apply the radiant energy in a patient's body, such as in a blood vessel. The radiant energy is applied in a manner which erodes biological material and may be used to drill through vascular obstructions. The catheter emits the radiant energy from its distal end in a pattern which defines a relatively small working region in which the energy density level is sufficiently high to remove the biological material. The energy distribution is substantially uniform across the beam. Distally beyond the working region, the energy density of the beam decays sharply so that biological material beyond the working region is not removed.

US Patent:

55934412, Jan 14, 1997

Filed:

Jun 7, 1995

Appl. No.:

8/472261

Inventors:

Irving L. Lichtenstein - Marina Del Rey CA
Carl R. Turnquist - Concord MA
Parviz K. Amid - Calabasas CA

Assignee:

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

International Classification:

A61F 202

US Classification:

623 11

Abstract:

A composite prosthesis and method for limiting the incidence of postoperative adhesions. The composite includes a mesh fabric and a barrier which prevents exposure of the mesh fabric to areas of potential adhesion. The interstices of the mesh fabric are infiltrated by tissue which secures the prosthesis in place. The composite is positioned with the barrier relative to the region of potential adhesion, such as the abdominal viscera.