Patent ID: 7766901

Claim:
A device for treating bladder-emptying dysfunctions of a human, comprising: a catheter that can be introduced into the urethra, said catheter having a urine-emptying channel and a balloon arrangement that can be filled with a fluid, to seal the bladder and to hold the catheter in a bladder lumen, said arrangement adapted to be filled with or emptied of said fluid by at least one channel that runs along a catheter wall and is sealed off at a distal end segment of the catheter; an automatically closing valve accommodated in a proximal end segment of the catheter, wherein a length of the catheter is dimensioned so that its distal end lies within the urethra in the inserted state; a hydraulic activation mechanism for opening the valve, said hydraulic activation mechanism being disposed in said proximal end segment; an activation balloon disposed on the distal end segment of the catheter, said balloon being filled with activation fluid and connected with the activation mechanism by way of a connection channel, said activation balloon hydraulically impacting said activation mechanism by mechanical pressure on the activation balloon; wherein the activation mechanism is formed by a closure part of the valve that is elastically connected with the proximal end segment of the catheter, so that the closure part seals off the catheter at the proximal end segment in a non-activated state of the activation balloon, wherein the closure part can be moved out from sealing contact solely in response to a hydraulic impact from actuating the activation balloon by means of the effective hydraulic pressure built up at a closure wall of the connection channel at the proximal end segment; and wherein the closure wall of the connection channel is opposite to an activation surface of the closure part and is pressed out of the connection channel in an axial direction by the hydraulic pressure so that the urine-emptying channel of the catheter is opened by the closure part for unhindered passage of urine.