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Fully implantable vapor pressure actuated penile erection device and method

  • US 4,572,168 A
  • Filed: 12/20/1983
  • Issued: 02/25/1986
  • Est. Priority Date: 12/20/1983
  • Status: Expired due to Term
First Claim
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1. A penile erection prosthesis for implantation totally within the corpus cavernosum of the penis of a human male, the prosthesis comprising:

  • a rigid root section outer casing for implantation in the root of the corpus cavernosum;

    a flexible pendulous section outer casing for implantation in the pendulous portion of the penis;

    a sealed, variable volume pressurant chamber located in said rigid root section;

    a pressurant filling said pressurant chamber, said pressurant being capable of changing state at normal body temperature between liquid and vapor in dependence upon the volume of said pressurant chamber and maintaining a positive pressure in said pressurant chamber;

    a root reservoir chamber located in said rigid root section, one wall of which is moved in dependence upon the volume of said variable volume pressurant chamber;

    a pendulous section chamber located in said pendulous section outer casing, said pendulous section chamber being in fluid communication with said root reservoir chamber;

    a working fluid filling said root reservoir chamber and said pendulous section chamber;

    actuating means for bringing the penis from a flaccid to an erect state by increasing the volume of said pressurant chamber and thereby forcing said working fluid from said root reservoir chamber to said pendulous section chamber, said increasing of volume being accomplished by permitting at least a portion of said pressurant to change from its liquid state to its vapor state; and

    means for returning the penis to its flaccid state.

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