Apparatus for cystographic inspection

An apparatus used for cystographic inspection for examining a flexed condition of the urethra and a posterourethrovesical angle, the apparatus comprising:

• a catheter for insertion through the urethra into the urinary bladder of a patient, said catheter injecting a contrast medium into the urinary bladder and being drawn out of the urethra after an injection of the contrast medium has been completed;
• said catheter including a housing;
• a cylindrical injector for containing the contrast medium and removably-connected to one end of said housing;
• a urethral locus indicating member removably positioned in said housing and including a chain formed such that it can be roentgenographed, said chain being emitted out of out of said housing through another end thereof into the urinary bladder at a front portion of said chain upon said injection of the contrast medium into the urinary bladder and being left in a region extending from the urethra to the urinary bladder after the catheter has been drawn out of the urethra;
• and
• a marker which is formed such that it can be roentgenographed, said marker being adjustably fixed on said chain in a predetermined position and at a distance from a front end of said chain and having a diameter larger than that of said urethral locus indicating member so as to prevent said marker from penetrating into the urethra when said chain is inserted into the urinary bladder and permit detection of the external urethral opening when said chain with said marker are roentgenographed.