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Prosthetic device

  • US 4,671,262 A
  • Filed: 05/16/1985
  • Issued: 06/09/1987
  • Est. Priority Date: 05/16/1985
  • Status: Expired due to Term
First Claim
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1. A prosthetic device for assisting in penile erection comprising a thin, elongated, tubular sheath having a smooth interior surface and exterior surface constructed of skin-like film material and having an open proximal end to enable insertion of a penis and a closed distal end, said sheath including an inferior wall and superior wall unitary with sidewall portions and including a longitudinally extending tubular passageway extending from the proximal end to the distal end with the passageway being formed in the inferior wall and opening into the interior surface of the sheath at the distal end, valve means in the passageway at the proximal end of the sheath for selectively communicating the passageway with a vacuum source of negative pressure to control and regulate the negative pressure within the sheath and means on the proximal end of the sheath for sealing engagement with the surface area of a user adjacent the base of the penis to enable a negative pressure to exist in the sheath and to exert gentle pressure at the base of the penis causing reflex and physiologic closing of the valves of the corpora thereby facilitating more normal erection, said sheath being provided with an external projection along the inferior wall in which said passageway is formed thereby providing a continuous smooth interior surface in the sheath, said sheath being dimensioned to completely receive a flaccid penis therein and enabling enlargement to a normal erection without pain or limitation with a negative pressure providing semi-rigidity to the sheath to facilitate coitus, said closed distal end of the sheath including a soft simulative glans penis having an exterior surface and interior surface shaped to simulate a natural glans penis constructed of soft material substantially thicker than and slightly larger in circumference than the portion of the sheath from the proximal end to the simulated glans penis, said passageway extending from an opening in a central area of the interior surface of the simulated glans penis, said simulated glans penis at the distal end having an internal surface shaped to simulate and closely receive a natural glans penis, said means at the proximal end of the sheath for engagement with the surface area adjacent the base of the penis including a flange extending laterally from the superior wall of the sheath and being generally flexible for engagement with the symphsis pubis, the inferior wall of the sheath including an axially and downwardly angled flange having the valve means incorporated therein with the free edge of the flange on the inferior wall including curved edges conforming with and engaging the surface areas adjacent the base of the penis with the flange adapted to receive lubricant to maintain a seal to maintain negative pressure in the sheath when the distal end if communicated with a source of vacuum, said valve means including a transverse passageway at the proximal end of the sheath in communication with the longitudinal passageway, a valve member slidably disposed in the transverse passageway and including an opening therethrough for selective alignment with the longitudinal passageway, a spring in the transverse passageway engaging one end of the valve member and the end of the transverse passageway to bias the valve member toward closed position with respect to the longitudinal passageway for trapping a negative pressure in the sheath with the outer end of the valve member being disposed externally of the sheath to enable manipulation thereof to selectively communicate the interior of the sheath with a vacuum source or release the negative pressure therein to facilitate removal of the prosthetic device from the penis.

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