1
Fritz Hostettler, David Rhum, Michael R Forman, Michael N Helmus, Ni Ding: Medical device coated with interpenetrating network of hydrogel polymers. Schneider, Vidas Arrett & Steinkraus, September 19, 2000: US06120904 (453 worldwide citation)

A medical device comprising an organic polymer substrate material having a coating thereon, the coating comprising an interpenetrating network of two different hydrogel polymers, one of which is a polyurethane/polyurea hydrogel polymer, the polyurethane/polyurea hydrogel polymer being linked to the ...


2
Fritz Hostettler, David Rhum, Michael R Forman, Michael N Helmus, Ni Ding: Process for preparation of slippery, tenaciously adhering, hydrophilic polyurethane hydrogel coating, coated polymer and metal substrate materials, and coated medical devices. Schneider, Vidas Arrett & Steinkraus, June 27, 2000: US06080488 (378 worldwide citation)

A process for the preparation of slippery, hydrophilic polyurethane hydrogel coating compositions, and materials composed of a polymeric plastic or rubber substrate or a metal substrate with a coating of a slippery, hydrophilic polyurethane hydrogel thereon, such that the coating composition tenacio ...


3
David Rhum, Rodney Wells, Joshua Makower: Retrograde tissue splitter and method. Valleylab, August 25, 1998: US05797906 (308 worldwide citation)

A device for retrograde hole opening through tissue has a member elongate on an axis with a cross section shaped to insert axially through external tissue. A distal and a proximal end on the member respectively enter the tissue during placement and remain outside the tissue for control. A tip at the ...


4
David Rhum, Rodney Wells, Joshua Makower: Retrograde tissue splitter and method. Valleylab, Peter C Richardson, Lawrence C Akers, Aaron Passman, September 12, 1995: US05449355 (223 worldwide citation)

A device for retrograde hole opening through tissue has a member elongate on an axis with a cross section shaped to insert axially through external tissue. A distal and a proximal end on the member respectively enter the tissue during placement and remain outside the tissue for control. A tip at the ...


5
Fritz Hostettler, David Rhum, Michael R Forman, Michael N Helmus, Ni Ding: Slippery, tenaciously adhering hydrophilic polyurethane hydrogel coatings, coated polymer substrate materials, and coated medical devices. Schneider, Vidas Arrett & Steinkraus, January 25, 2000: US06017577 (107 worldwide citation)

A process for the preparation of slippery, hydrophilic polyurethane hydrogel coating compositions, and materials composed of a polymeric plastic or rubber substrate or a metal substrate with a coating of a slippery, hydrophilic polyurethane hydrogel thereon, such that the coating composition tenacio ...


6
Fritz Hostettler, David Rhum, Michael R Forman, Michael N Helmus, Ni Ding: Process for producing slippery, tenaciously adhering hydrogel coatings containing a polyurethane-urea polymer hydrogel commingled with at least one other, dissimilar polymer hydrogel. Schneider, Peter C Richardson, Lawrence C Akers, Howard R Jaeger, November 19, 1996: US05576072 (99 worldwide citation)

A process for preparing coating compositions of a commingled hydrogel of a polyurethane-polyurea polymer hydrogel and at least one other polymer hydrogel of a polymer different from polyurethane-polyurea; a process for making materials composed of a polymeric plastic or rubber substrate or a metalli ...


7
Claude Tihon, John H Burton, Timothy C Cook, David Rhum: Dilation device for the urethra. American Medical Systems, Peter C Richardson, Lawrence C Akers, J Trevor Lumb, March 19, 1996: US05499994 (87 worldwide citation)

A device for dilating at least an obstructed portion of a urethra includes a hollow core member with opposed open ends permitting urination therethrough from the bladder, a confining covering disposed on the hollow member having a length of at least that of the obstructed portion and having hydrophi ...


8
Fritz Hostettler, David Rhum, Michael R Forman, Michael N Helmus, Ni Ding: Slippery, tenaciously adhering hydrogel coatings containing a polyurethane-urea polymer hydrogel commingled with a poly(N-vinylpyrrolidone) polymer hydrogel, coated polymer and metal substrate materials, and coated medical devices. Schneider, Vidas Arrett & Steinkraus, July 6, 1999: US05919570 (79 worldwide citation)

Slippery, hydrophilic coating compositions of a polyurethane/urea prepolymer adduct intermediate commingled with at least one dissimilar hydrogel polymer precursor, and materials composed of a polymeric plastic or rubber substrate or a metallic substrate with a slippery hydrogel coating of a polyure ...


9
Fritz Hostettler, David Rhum, Michael R Forman, Michael N Helmus, Ni Ding: Process for the preparation of slippery, tenaciously adhering, hydrophilic polyurethane hydrogel coatings, coated polymer and metal substrate materials, and coated medical devices. Schneider, Vidas Arrett & Steinkraus, July 24, 2001: US06265016 (75 worldwide citation)

A process for the preparation of slippery, hydrophilic polyurethane hydrogel coating compositions, and materials composed of a polymeric plastic or rubber substrate or a metal substrate with a coating of a slippery, hydrophilic polyurethane hydrogel thereon, such that the coating composition tenacio ...


10
Fritz Hostettler, David Rhum, Michael R Forman, Michael N Helmus, Ni Ding: Process for producing slippery, tenaciously adhering hydrogel coatings containing a polyurethane-urea polymer hydrogel commingled with a poly (n-vinylpyrrolidone) polymer hydrogel. Schneider, Peter C Richardson, Lawrence C Akers, Howard R Jaeger, September 2, 1997: US05662960 (61 worldwide citation)

A process for preparing coating compositions of a commingled hydrogel of a polyurethane-polyurea polymer hydrogel and a poly(N-vinylpyrrolidone) polymer hydrogel; a process for making materials composed of a polymeric plastic or rubber substrate or a metallic substrate, with a coating of the comming ...