Abstract: The tissue expander includes a closed shell structure having a shell wall formed of a needle-penetrable material with self-sealing characteristics. The shell defines a fluid expandable chamber. In some embodiments of the invention, a self-sealing layer of elastomeric material is joined or otherwise bonded to an inner surface of a non-flowable layer of elastomeric material. In other embodiments of the invention, the self-sealing layer is joined to the outer surface of a layer of non-flowable elastomeric material. The self-sealing layer may also be sandwiched between two layers of non-flowable elastomeric material. In a further embodiment the self-sealing layer constitutes the entire shell of the tissue expander. In all embodiments of the invention, a needle stop member is provided to prevent a needle that accesses the fluid chamber from passing outwardly of the tissue expander in the same direction in which it has accessed the fluid chamber.

Abstract: An inflatable penile implant includes a novel compensator which both absorbs any increased pressure to protect the components of the hydraulic system from pressure damage and which permits the implant to be shortened in length without impairing its function. An improved tapered pumping chamber, improved pump valve and an improved pressure relief valve are also disclosed.

Abstract: An inflatable penile implant includes a novel compensator which both absorbs any increased pressure to protect the components of the hydraulic system from pressure damage and which permits the implant to be shortened in length without impairing its function. An improved tapered pumping chamber, improved pump valve and an improved pressure relief valve are also disclosed.

Abstract: A latch for securing the ends of a belt together so as to encircle an inflatable cuff of an artificial sphincter. The latch includes two rotatable components with cavities which receive the belt ends when the components are suitably rotated and capture the belt ends within the latch when the belt is in tension.