Implantable body fluid flow control device

Abstract

An apparatus for controlling fluid flow within a host body has a first shell and a second shell for coupling with the second shell to form a cylindrical object suitable for engaging and surrounding a selected canal with the host body. The cylindrical object is open at both ends and has an interior diameter of a dimension making it suitable for fitting over the selected host body's canal, such as the urethra. The apparatus also includes a plunger for constricting the fluid flow when activated. The plunger may be activated by an electrical solenoid or hydraulic or pneumatic activation to move from a free-flow position into a constricting position wherein the fluid flow though the canal is substantially prevented or reduced. The apparatus can be used for controlling incontinence or restricting fluid flow in other body canals. The host-user can activate the apparatus with a remote control device outside the body which communicates with the implanted apparatus by means of any wireless communication that transmits a signal to the device causing the solenoid to move the plunger into the constricting position. A second signal causes the plunger to retract into a free-flow position when the user no longer feels the urge to urinate.