Prostate balloon dilatation catheter

A prostate balloon dilatation catheter for treating benign prostate hyperplasia, comprising:

• a flexible catheter shaft flexible along its entire length having a proximal end and a distal end and three lumens therethrough;
• the lumens including a first guide wire lumen for receiving a guide wire and the flexible catheter shaft being displaceable along the guidewire, a second inflation lumen through the catheter shaft for providing inflation fluid to the distal region of the catheter shaft and a third viewing lumen through the catheter shaft extending from the proximal end of the shaft to a distal opening before the distal end of the catheter shaft for receiving a viewing telescope;
• a catheter tip having a central opening mounted at the distal end of the catheter shaft, the opening communicating with the guide wire lumen;
• an expandable balloon mounted at the distal region of the shaft in communication with the inflation lumen for expanding the balloon to dilate the prostate;
• the balloon being a flexible expandable member having a distal end and a proximal end, the proximal end of the balloon mounted to an intermediate portion of the shaft and the distal end of the balloon mounted to a distal portion of the catheter;
• the proximal end of the balloon being layered on itself to provide a smooth profile when deflated;
• and
• the viewing lumen terminating at the proximal side of the balloon for permitting an operator to view through a telescope placed in the viewing lumen the proximal portion of the balloon and anatomical landmarks to dilate the prostate accurately without injury to the external sphincter when the balloon is expanded.

A prostate balloon dilatation catheter for treating benign prostate hyperplasia, comprising:

• a flexible catheter shaft flexible along its entire length having a proximal end and a distal end;
• the shaft having two lumens, the first lumen denominated an inner shaft lumen for receiving an inner flexible shaft, and a second lumen denominated a viewing lumen, the viewing lumen adjacent to the first inner shaft lumen and terminating in a distal opening before the distal end of the catheter shaft for receiving a viewing telescope;
• an inner catheter shaft disposed in the first lumen extending from the proximal end of the outer shaft to beyond the distal end of the outer shaft and having a guide wire lumen therethrough;
• the inner and outer shafts slidable with respect to each other and an annular space therebetween;
• a catheter tip having a central opening mounted at the distal end of the inner catheter shaft, the opening communicating with the guide wire lumen in the inner shaft;
• an expandable balloon mounted at the distal region of the catheter shaft with the distal end of the balloon mounted to the distal region of the inner shaft and the proximal end of the balloon mounted to an intermediate region of outer shaft, the annular space between the shafts in communication with the proximal end of the catheter for receiving fluid to expand the balloon for expansion to dilate the prostate;
• the balloon being a flexible expandable member providing a smooth profile when deflated due to relative sliding of the shafts;
• and
• the viewing lumen in the outer shaft terminating at the proximal side of the balloon for permitting an operator to view through a telescope placed in the viewing lumen the proximal portion of the balloon and anatomical landmarks to dilate the prostate accurately without injury to the external sphincter when the balloon is expanded.

A prostate balloon dilatation catheter for treating benign prostate hyperplasia, comprising:

• a flexible shaft which is flexible along its entire length having a proximal end and a distal end and at least three lumens therethrough;
• a balloon portion mounted at the distal region of the shaft in communication with one lumen for expanding the balloon to dilate the prostate;
• one of the lumens within the flexible shaft being a lumen for receiving a guide wire for assisting and inserting the catheter along the wire, the flexible shaft displaceable along the guide wire;
• one of the lumens within the flexible shaft being a viewing lumen having a crescent shape cross-section for receiving viewing means for permitting an operator to view the proximal portion of the balloon and anatomical landmarks to dilate the prostate accurately without injury to the external sphincter when the balloon is expanded;
• and
• a telescope disposed with the viewing lumen, the viewing lumen adapted to form two lumens when the telescope is installed, one of the two separate lumens for providing rinsing fluid to the distal end of the telescope and the other of said separate lumens for draining the rinsing fluid.