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Urinary sphincter control device

  • US 6,319,237 B1
  • Filed: 04/23/1999
  • Issued: 11/20/2001
  • Est. Priority Date: 04/23/1999
  • Status: Expired due to Fees
First Claim
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1. A urinary sphincter control device for application to a urethra to control flow of fluid through the urethra, comprising a cuff configured be fitted around the urethra, the cuff comprising a plurality of chambers which are discontinuous around the urethra so that blood is able to flow along the urethra in its wall even when the urethra is closed against fluid flow, which can be inflated to cause the configuration of the cuff to change so as to alter the resistance that is provided by the cuff to flow of fluid through the urethra, and at least one of the chambers containing therein a resiliently deformable biassing element for biassing the chamber configuration towards an uninflated configuration, and wherein the biassing element is formed from a shape memory alloy which exhibits non-linear superelastic properties.

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