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Diaphragm based spontaneous inflation inhibitor in a pump for an inflatable prosthesis

  • US 6,533,719 B2
  • Filed: 12/27/2000
  • Issued: 03/18/2003
  • Est. Priority Date: 12/27/2000
  • Status: Expired due to Term
First Claim
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1. A penile prosthesis comprising:

  • a housing;

    a fluid inlet to the housing, coupleable to a reservoir;

    a fluid outlet from the housing coupled to an inflatable cylinder;

    a fluid passageway coupling the fluid inlet to the fluid outlet;

    an input chamber coupling the fluid inlet to the fluid passageway;

    a first check valve disposed within the fluid passageway and biased towards a closed position;

    a second check valve disposed within the fluid passageway and biased towards a closed position;

    a pump bulb in fluid communication with the fluid passageway between the first and second check valves; and

    a bypass passageway fluidly coupling the input chamber to an expansion chamber located proximate the second check valve, wherein the expansion chamber includes a flexible wall portion that is able to contact the second check valve and urge the second check valve towards the closed position when fluid pressure within the expansion chamber exceeds a predetermined value.

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