1
Donald J Lyman, Richard G Middleton: Ureteral prosthesis. University of Utah, Thorpe North & Western, June 15, 1982: US04334327 (111 worldwide citation)

A ureter prosthesis fabricated from copolyurethane materials which are non-reactive in the urinary environment and adapted for fixation within a patient to avoid adverse migration. This ureter prosthesis can be adapted for intermediate location along a ureter or can be constructed with one-way valve ...


2
Pierre Rey, Jacqueline Leandri, Clement Abbou: Total or partial ureteral prosthesis. October 7, 1980: US04225979 (37 worldwide citation)

A ureteral prosthesis comprises a generally tubular member (9) of a urine-resistant and physiologically acceptable flexible material. The tubular member (9) has at least one permanent distortion (7) along its length, and has at least one anti-reflux valve (5) at its downstream end. The permanent dis ...


3
Fernando I De La Torre: Ureteral prosthesis. Michael J Striker, September 10, 1996: US05554189 (11 worldwide citation)

The lasting withdrawable ureteral prosthesis has a hollow tubular frame formed by a coiled biotolerable metallic wire including a number of closely contacting spires, at least a portion of which permit an easy flow of urine from an inside region to an outside region and from the outside region to th ...


4
Izquierdo de La Torre Fernando: Long duration ureteral prosthesis.. Izquierdo de La Torre Fernando, September 20, 1995: EP0672394-A1 (6 worldwide citation)

The prosthesis, designed to remain in place for up to a year, comprises a tube made from a biocompatible ferrous metal spiral (1), the coils of which are in close contact but permit the easy passage of urine between them in both directions. The last few coils (4) of the spiral at each end of the tub ...


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Fernando Izquierdo de La Torre: Ureteral prosthesis. Fernando Izquierdo de La Torre, November 21, 1995: JP1995-303666

PURPOSE: To provide a ureteral prosthesis usable for a long period of time, and capable of conserving its function without spoiling its comfortableness. CONSTITUTION: This ureteral prosthesis has a tubular frame formed by a spirally coiled stainless steel wire, and each spiral loop for this metallic ...