I.E. Moon has re-filed a patent application (#RE39930, on December 4, 2007) for a “Hygienic, removable toilet attachment for enema, douche or colonic irrigation.” The abstract says:
A toilet attachment is configured for positioning between a toilet seat and a toiled bowl. In use, the toilet attachment is secured by the weight of the toilet seat. The toilet attachment has a base plate and a tubular irrigation assembly which can be connected to a fluid line…. The irrigation assembly comprises an irrigation tip, and in one embodiment of the toilet attachment, a restrictor as a limiter for preventing insertion of the tip too far into a body cavity.
The technical drawing shown here appears in the application:
(Thanks to investigator Martin Gardiner for bringing this to our attention.)