Fluid control system for inflatable sphincter prostheses

An implantable sphincter prosthesis comprising a fluid transfer system and an inflatable cuff for occluding a body channel, said fluid transfer system comprising:

• an inflate pump having a first elastomeric pump bulb, said first elastomeric pump bulb being volitionally deformable to create positive intraluminal pump pressure that forces fluid to be exhausted from the inflate pump, wherein, subsequent to volitional deformation, said first elastomeric pump bulb is incapable of imposing a negative intraluminal inflate pump pressure;
• a deflate pump having a second elastomeric pump bulb, said second elastomeric pump bulb being volitionally deformable to create a positive intraluminal pump pressure that forces fluid to be exhausted from the deflate pump, wherein, subsequent to volitional deformation, said second elastomeric pump bulb imposes a negative intraluminal deflate pump pressure to cause fluid to fill the deflate pump;
• a first one-way valve located between said inflate pump and said inflatable cuff with a first fluid flow through said first one-way valve directed from said inflate pump to said inflatable cuff;
• a second one-way valve located between said deflate pump and said inflate pump with a second fluid flow through said second one-way valve directed from said deflate pump to said inflate pump, the second one-way valve having a backpressure corresponding to a desired intraluminal pressure of the inflatable cuff in an inflated state, the first one-way valve having a backpressure greater than the backpressure of the second one-way valve;
• and
• a third one-way valve located between said inflatable cuff and said deflate pump with a third fluid flow through said third one-way valve directed from said inflatable cuff to said deflate pump, the third one-way valve having at least substantially zero backpressure,
• wherein said fluid transfer system enables fluid to flow from said inflate pump to said inflatable cuff when said inflate pump is volitionally deformed to provide patient continence, and wherein said third fluid flow enables fluid to flow from said inflatable cuff to said deflate pump and said inflate pump upon activation of said deflate pump to permit patient voiding.