Prosthetic catheter

Claim 1

A system for enabling the injection of liquid into the prostate comprising a catheter consisting of an elongated tubular member having an external end and an insertion end formed of flexible material of sufficient rigidity and a sufficiently small outer diameter to enable insertion along the length of the male urethra through the cystourethral junction into the bladder, inflatable balloon means adjacent the insertion end of said elongated tubular member capable of inflation to a size sufficiently large to prevent removal of said balloon means from the bladder, an inflation enabling conduit extending along the length of said elongated tubular member and having an inner end communicating with the interior of said balloon means and an outer end connectable to a source of gas for enabling inflation of said balloon means, a medication providing conduit also extending along the length of said elongated tubular member, medication dispensing duct means in said tubular member communicating with the insertion end of said medication providing conduit, said medication dispensing duct being spaced outwardly along the length of said tubular member a distance from said balloon means so as to be positioned adjacent the area of the prostate in which the prostatic ducts are located when said balloon is in place and engaged with the inner wall of the bladder adjacent the cystourethral junction to permit medication from said medication providing conduit to be injected into the prostate, penis clamp means for clamping the urethra to the outer surface of said elongated tubular member in an area outwardly of said medication duct means and a holding clamp mounted on a support spaced from the patient for clamping the external end of the elongated tubular member for holding said elongated tubular member in tension when positioned in a patient to maintain said balloon in position in forceful engagement with the inner wall of the patient's bladder with sufficient force to permit medication to be injected in the portion of the urethra between the balloon and the penis clamp means at sufficient pressure to enable flow of the medication into the prostate via the prostatic ducts.

Claim 2

A system for enabling the injection of liquid into the prostate comprising a catheter consisting of an elongated tubular member having an external end and an insertion end formed of flexible material of sufficient rigidity and a sufficiently small outer diameter to enable insertion along the length of the male urethra through the cystourethral junction into the bladder, inflatable balloon means adjacent the insertion end of said elongated tubular member capable of inflation to a size sufficiently large to prevent removal of said balloon means from the bladder, an inflation enabling conduit extending along the length of said elongated tubular member and having an inner end communicating with the interior of said balloon means and an outer end connectable to a source of gas for enabling inflation of said balloon means, a medication providing conduit also extending along the length of said elongated tubular member, medication dispensing duct means in said tubular member communicating with the insertion end of said medication providing conduit, said medication dispensing duct being spaced outwardly along the length of said tubular member a distance from said balloon means so as to be positioned adjacent the area of the prostate in which the prostatic ducts are located when said balloon is in place and engaged with the inner wall of the bladder adjacent the cystourethral junction to permit medication from said medication providing conduit to be injected into the prostate, penis clamp means for clamping the urethra to the outer surface of said elongated tubular member in an area outwardly of said medication duct means and a holding clamp mounted on a support spaced from the patient for clamping the external end of the elongated tubular member for holding said elongated tubular member in tension when positioned in a patient to maintain said balloon in position in forceful engagement with the inner wall of the patient's bladder with sufficient force to permit medication to be injected in the portion of the urethra between the balloon and the penis clamp means at sufficient pressure to enable flow of the medication into the prostate via the prostatic ducts.