1
Cheng Kung Liu, Ying Jiang, Mark S Roby, Steven L Bennett, Richard P Stevenson, Jeffrey P Pietrangeli: Composite bioabsorbable materials and surgical articles made therefrom. United States Surgical Corporation, May 6, 1997: US05626611 (211 worldwide citation)

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 ...


2
Cheng Kung Liu, Ying Jiang, Mark S Roby, Steven L Bennett, Richard P Stevenson, Jeffrey P Pietrangeli: Composite bioabsorbable materials and surgical articles made thereform. United States Surgical Corporation, November 26, 1996: US05578046 (142 worldwide citation)

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 ...


3

4
Cheng Kung Liu, Ying Jiang, Mark S Roby, Steven L Bennett, Richard P Stevenson, Jeffrey P Pietrangeli: Composite bioabsorbable materials and surgical articles made therefrom. United States Surgical, July 25, 2000: US06093200 (88 worldwide citation)

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 ma ...


5
Mark S Roby, Steven L Bennett, Cheng Kung Liu: Absorbable block copolymers and surgical articles fabricated therefrom. United States Surgical Corporation, April 4, 1995: US05403347 (76 worldwide citation)

Block copolymers wherein one of the blocks is made from hard phase forming monomers and another of the blocks is made from soft phase forming monomers copolymerized with randomly intermingled units of other soft phase forming monomers. The copolymers are useful in forming surgical articles, includin ...


6
Cheng Kung Liu: Absorbable polymer blends and surgical articles fabricated therefrom. United States Surgical Corporation, December 7, 1999: US05997568 (61 worldwide citation)

Bioabsorbable polymers and copolymers having accelerated mass loss, and more particularly bioabsorbable polymers and/or copolymers blended with particles of bioabsorbable polymers as well as surgical articles made totally or in part therefrom, including both monofilament and multifilament sutures, a ...


7
Cheng Kung Liu, John C Brewer: Polypropylene monofilament suture and process for its manufacture. United States Surgical Corporation, Thomas R Bremer, Peter G Dilworth, Rocco S Barrese, June 8, 1993: US05217485 (59 worldwide citation)

A process is provided for manufacturing a polypropylene monofilament suture exhibiting reduced strain energy, increased knot security and greater resistance to acquiring an in-storage set.


8
John Kennedy, Cheng Kung Liu: Bioabsorbable melt spun fiber based on glycolide-containing copolymer. United States Surgical Corporation, June 20, 1995: US05425984 (58 worldwide citation)

A bioabsorbable fiber useful for the manufacture of medical devices is obtained from a polymer containing from about 15 to about 30 mole percent glycolide in a melt spinning operation carried out under low shear conditions. The fiber is drawn at a ratio of about 1.5 to 2.7. The fiber possesses excel ...


9
Mark S Roby, Cheng Kung Liu, Steven L Bennett: Absorbable block copolymers and surgical articles fabricated therefrom. United States Surgical Corporation, June 4, 1996: US05522841 (47 worldwide citation)

Block copolymers have one of the block made from hard phase forming monomers and another block made from soft phase forming monomers copolymerized with randomly intermingled units of other soft phase forming monomers. Particularly useful copolymers are initiated with a polyalkylene oxide initiator. ...


10
Cheng Kung Liu, John C Brewer: Method of suturing using a polyetherimide ester suture. United States Surgical Corporation, January 2, 1996: US05480411 (40 worldwide citation)

A method for suturing a wound using a suture manufactured from polyamide ester having the reaction product of at least one molecular weight diols; at least one dicarboxylic acids and at least one polyoxyalkylene diimide diacid to create a wound closure.