Richard B Stevenson

US Patent:

56266111, May 6, 1997

Filed:

Feb 10, 1994

Appl. No.:

8/194766

Inventors:

Cheng-Kung Liu - Norwalk CT
Ying Jiang - North Haven CT
Mark S. Roby - Killingworth CT
Steven L. Bennett - New Haven CT
Richard P. Stevenson - Colchester CT
Jeffrey P. Pietrangeli - Bridgeport CT

Assignee:

United States Surgical Corporation - Norwalk CT

International Classification:

A61B 1700

US Classification:

606230

Abstract:

The present invention relates to composite materials having a core portion formed from a first bioabsorbable material and at least one shell portion of a second bioabsorbable material joined to the core portion. The first and second bioabsorbable materials have different rates of bioabsorption. In a preferred embodiment, the core portion is coextruded with the shell portion to form a composite filament or sheet. The materials of the present invention may be used as sutures or formed into medical devices or surgical articles for implantation within a living organism.

US Patent:

60932007, Jul 25, 2000

Filed:

Sep 10, 1997

Appl. No.:

8/926728

Inventors:

Cheng-Kung Liu - Norwalk CT
Ying Jiang - North Haven CT
Mark S. Roby - Killingworth CT
Steven L. Bennett - Southington CT
Richard P. Stevenson - Colchester CT
Jeffrey P. Pietrangeli - Bridgeport CT

Assignee:

United States Surgical - Norwalk CT

International Classification:

A61B 1704

US Classification:

606228

Abstract:

Composite materials have a core portion formed from a biocompatible material and at least one shell portion of a biocompatible material joined to the core portion. In a preferred embodiment, the core portion is coextruded with the shell portion to form a composite filament or sheet. The composite materials may be used as sutures or formed into medical devices or surgical articles for implantation within a living organism.

US Patent:

54946204, Feb 27, 1996

Filed:

Nov 24, 1993

Appl. No.:

8/158098

Inventors:

Cheng-Kung Liu - Norwalk CT
Richard P. Stevenson - Colchester CT

Assignee:

United States Surgical Corporation - Norwalk CT

International Classification:

D01D 5088
D01D 512
D01D 1002

US Classification:

264 28

Abstract:

A process and apparatus are provided for manufacturing monofilaments possessing improved physical characteristics such as knot-pull and straight-pull strength.

US Patent:

55780466, Nov 26, 1996

Filed:

May 12, 1995

Appl. No.:

8/439830

Inventors:

Cheng-Kung Liu - Norwalk CT
Ying Jiang - North Haven CT
Mark S. Roby - Killingworth CT
Steven L. Bennett - New Haven CT
Richard P. Stevenson - Colchester CT
Jeffrey P. Pietrangeli - Bridgeport CT

Assignee:

United States Surgical Corporation - Norwalk CT

International Classification:

A61B 1700

US Classification:

606151

Abstract:

The present invention relates to composite materials having a core portion formed from a first bioabsorbable material and at least one shell portion of a second bioabsorbable material joined to the core portion. The first and second bioabsorbable materials have different rates of bioabsorption. In a preferred embodiment, the core portion is coextruded with the shell portion to form a composite filament or sheet. The materials of the present invention may be used as sutures or formed into medical devices or surgical articles for implantation within a living organism.

US Patent:

20150327864, Nov 19, 2015

Filed:

Jul 24, 2015

Appl. No.:

14/808187

Inventors:

- Mansfield MA, US
Paul Scirica - Huntington CT, US
Sally Carter - Nashua NH, US
Richard Stevenson - Colchester CT, US
Arthur Hislop - Plantsville CT, US
Thomas Casasanta - Kensington CT, US

International Classification:

A61B 17/10
A61B 17/32
A61B 17/068

Abstract:

An apparatus for joining two hollow organ sections includes a staple cartridge component, an anvil component, a knife member, a buttress mount and a buttress member. The staple cartridge component includes a plurality of surgical staples in an annular array. The anvil component is movable relative to the staple cartridge component between spaced apart and approximated positions to adjustably clamp tissue. The knife member is movable relative to the staple cartridge component. The buttress mount is concentrically disposed at least partially within the lumen of the knife member. The buttress mount includes a plurality of spokes radially extending outward and a plurality of legs detachably secured with an inner wall of the knife member. The buttress member is secured with the plurality of spokes of the buttress mount. The buttress member is concentrically aligned with the plurality of surgical staples.