Abstract: A cystoscope of the invention comprises a main portion (10) and a tubular sheath (12, 110) that carries on its distal end a balloon (22, 114, 214) inflatable from the outer side of the cystoscope for spreading apart the prostate lobes in the prostatic part of the urethra and thus improving conditions for observation and operation on the prostate. The invention also provides a cystoscope convertable into a resectoscope which consists of a sheath (12, 110) and an outer sleeve (112), slidingly guided over the sheath. On the outer side of its distal portion, the sliding outer sleeve (112) carries an inflatable balloon (114) which is connected to an air-feed tube (118) located inside the sheath. The outer sleeve is connected to an inner sleeve (116) which slides inside the sheath. The distal end face (110b) of the sheath is inclined at an acute angle to accommodate the inclined optical portion of the cystoscope, whereas the distal end face (116a) of the inner sleeve is arranged substantially at 90.degree.

Abstract: A method of laser-assisted prostatectomy which is based on the use of special laseroscope with continuous flow of the flushing and cooling liquid is provided. The method consists of inserting the above laseroscope into the patient's urethra with the laser fiber tip positioned at the prostate gland area, inserting a balloon catheter through the laseroscope to the urinary bladder neck, inflating the balloon of the catheter, initiating an inflow of washing and cooling liquid to the operating area, which is isolated from the urinary bladder by the balloon catheter, inserting a laser fiber into the laseroscope, firing the laser fiber and directing a laser beam laterally from the laser fiber onto the prostatic gland for directing the laser beam to the required area. The method is carried out by means of an apparatus comprising a tubular sheath (10) with three guide tubes, i.e.

Abstract: A urological instrument combining in itself a function of a prostate retractor and an instrument for the insertion of a suprapubic catheter. The instrument has a curved tubular body (10) inserted into which is a flexible metallic tubular catheter (32). The catheter (32) is moveable from a feed mechanism (24) and is pivotally connected to a pair of foldable jaws (40 and 42) located on the distal end of the instrument. When the catheter is shifted towards the proximal end of the instrument, the jaws (40 and 42) are opened and when the catheter is shifted towards the distal end, the jaws are folded and are used for the attachment of a bullet-like perforating cup (56). The catheter (32) has a leader (64).