Abstract: A surgically implantable prosthesis for the treatment of penile erectile impotence in male patients. The device comprises at least one elongated cylinder implanted within one of the corpora cavernosa of the penis. The flexible, distal end of the cylinder is adapted to rigidize upon being filled with pressurizing fluid. The rear tip or proximal end of the cylinder is formed to provide a chamber which serves as a fluid reservoir. Valve means contained within the cylinder controls fluid flow between the rear tip reservoir and the flexible, distal end of the cylinder. The prosthesis further includes a manually operable pump means utilized to transfer pressurized fluid from the rear tip reservoir to the distal end of the cylinder in order to achieve an erection. The walls of the rear tip reservoir itself may serve as the pump means; or a separate pump may be implanted within the scrotum.

Abstract: A surgically implantable prosthesis for the treatment of penile erectile impotence in male patients. The device comprises at least one elongated cylinder implanted within one of the corpora cavernosa of the penis. The flexible, distal end of the cylinder is adapted to rigidize upon being filled with pressurizing fluid. The rear tip or proximal end of the cylinder is formed to provide a chamber which serves as a fluid reservoir. Valve means contained within the cylinder controls fluid flow between the rear tip reservoir and the flexible, distal end of the cylinder. The prosthesis further includes a manually operable pump means utilized to transfer pressurized fluid from the rear tip reservoir to the distal end of the cylinder in order to achieve an erection. The walls of the rear tip reservoir itself may serve as the pump means; or a separate pump may be implanted within the scrotum.

Abstract: A dilator for use in implant and other types of urologic surgery which reduces tissue abrasion and damage includes radially separable longitudinal sections for variably dilating generally cylindrial urinary passages and tissue formations. The controlled variable dilation is accomplished by inserting a generally wedge-shaped member between the radially separable sections until the proper degree of dilation has been achieved. The wedge-shaped member can carry an instrument such as a needle and suture through the dilated body passage.

Abstract: A prosthetic check valve which allows unrestricted fluid flow in a forward direction and is capable of being repeatedly pulled open to allow reverse fluid flow. The valve comprises a valve body having an extensible section which houses a valve seat and a valve support. A resilient member is attached to the valve support and resiliently supports a valve member so as to force the valve member towards the valve seat. When the extensible section is contracted, the valve acts as a check valve to allow fluid flow only in a forward direction from a supply tube, through the valve support and valve seat, to a demand tube. When the extensible section is extended, fluid is allowed to flow both in the aforesaid forward direction and in a reverse direction through the valve.