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his catheter in the early 1930s and was still developing it when a U.S. patent was issued to Paul Raiche of the Davol Rubber Co. Four months later, Dr. Foley applied for a patent (October 1936) and had the burden to prove his priority. The patent office had cited Mr. Raiche as the first inventor; Foley appeared before the patent office's Board of Appeals and that decision was reversed. A subsequent appeal by Mr. Raiche, heard by the court, again changed the decision in favor of Mr. Raiche. A final hearing requested by Dr. Foley was refused and thus Davol was the owner of the patent. Even though Dr. Foley lost the court action and his claim for priority, the catheter is still known as the Foley catheter.

Dr. Foley also invented a hydraulic table and was probably the first to describe an artificial sphincter: an inflatable pneumatic cuff that was placed around the urethra, partially isolated from the penile shaft by creating a "suitcase handle." A few years later he presented his rotatable resectoscope that was somewhat bulky and, like most others of its kind, did not survive the test of time. Dr. Foley died in 1966 of lung cancer.

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