Ureteral prosthesis

Details Ureteral prosthesis Ureteral prosthesis

1979-12-21

1982-06-15

Crowder, Clifford D.

A61F 124

Patent

active

043343279

ABSTRACT:
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 means appropriate for implantation into the bladder lumen without a resulting vesico-ureteral reflux. The ureter prosthesis includes an elongate duct having a lumen whose interior surface is ultrasmooth based on microscopic inspection. An exterior cuff with terminal and intermediate sewing projections is formed around a portion of the elongate duct to enable its fixation by suturing to appropriate muscular tissue. The utility and success of this ureter prosthesis has been confirmed in multiple testing of dogs which have survived more than a year with the prosthetic ureter in place.

REFERENCES:
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patent: 3783454 (1974-01-01), Sausse et al.
patent: 4011861 (1977-03-01), Enger
patent: 4225979 (1980-10-01), Rey et al.
patent: 4228550 (1980-10-01), Salkind
Djurhuus et al., "Total Replacement of Ureter by a Scurasil Prosthesis in Pigs", British Journal of Urology, (1974), 46, 415-424.
Ulm et al., "Total Bilateral Polyvinyl Ureteral Substitutes in the Dog", Surgery, vol. 45, No. 2, Feb. 1959, pp. 313-320.
Fitzig et al., "Experimental Study with the Scurasil Ureteral Prosthesis", Investigative _Urology, vol. 15, No. 3, (1977), pp. 239-241.
Tremann et al., "Long-Term Ureteral Replacement Prosthesis", Urology, vol. XI, No. 4, (Apr. 1978), pp. 347-351.
Kron et al., "Prothese Choledocienne en Elastomere de Silicone", La Nouvelle Presse Medicale, (May 1981), pp. 1933-1935.
Bergman et al., "Block Copolyurethanes in the Urinary System", Investigative Urology, vol. 14, No. 6, (1977), pp. 411-416.

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