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Single circuit elastofluidic sphincter

  • US 4,634,443 A
  • Filed: 07/05/1985
  • Issued: 01/06/1987
  • Est. Priority Date: 07/05/1985
  • Status: Expired due to Fees
First Claim
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1. A prosthetic sphincter for surgical implantation to apply occlusive pressures to a patient'"'"'s lumen for achieving coaptive continence, said sphincter comprising:

  • an occlusion cuff surrounding the lumen and having an expandable chamber thereof for engaging and articulating the lumen;

    a first fluid filled path communicating with said expandable chamber;

    a second fluid filled path communicating with said expandable chamber; and

    first and second fluid filled reservoirs respectively interconnected with said first and second fluid paths by which to selectively deliver a supply of fluid under pressure via either one or both of said paths to said expandable chamber for controlling the expansion of said chamber and varying the occlusive pressures being applied to the lumen for achieving coaptive continence,each of said reservoirs being surgically implanted at a manually accessible area of the patient and having respective flexible surfaces to be manually depressed to compress its associated reservoir and force fluid therefrom and into a corresponding fluid path for delivery to said expandable chamber, such that the successive compression of the first and then the second of said reservoirs variably increasing the occlusive pressure being applied to said lumen from a first to a second pressure level.

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