Prostate balloon dilator

A method for the treatment of benign prostatic hyperplasia in a patient which comprises:

• inserting into the patient's prostate urethra a hollow, impervious, urinary catheter having a dilation balloon for dilating the prostate urethra and a location balloon for locating the dilation balloon at the prostate urethra, said dilation balloon having a proximal end and a distal end wherein the distal end has an integral protuberance which makes the balloon wall at said distal end thicker and stiffer than the remainder of the balloon wall, and said location balloon being axially mounted on said catheter at a distance from said dilation balloon such that the dilation balloon is positioned at the prostate urethra when the location balloon is positioned at the bulbous urethra distal from the external sphincter, and said location balloon on inflation being sized to fit in the bulbous urethra;
• placing said dilation balloon at the prostate urethra by palpating said protuberance at the apex of the prostate while locating and fixing said location balloon at the bulbous urethra;
• dilating said dilation balloon and thereby dilating the prostate urethra with said dilation balloon to alleviate obstruction of the prostate urethra resulting from benign
• prostatic hyperplasia;
• deflating said dilation balloon and location balloon;
• and removing said catheter from said prostate urethra.