The Oklahoma Supreme Court on Tuesday disbarred a former judge who served prison time for using a sexual device while presiding over trials.

Former Creek County District Judge Donald Thompson, 61, was accused of using a "penis pump" in court and convicted in June 2006 on four counts of indecent exposure.

Thompson was released in April after serving 20 months of a four-year prison term and has had to register as a sex offender. He was suspended from the bar association in late 2006.

The opinion written by Supreme Court Justice John Reif states that discipline less than disbarment has been imposed in cases involving felony convictions.

"However, the nature of the crimes in this matter led this Court to conclude that nothing less than disbarment is appropriate. The conduct was not isolated, having occurred over a fairly lengthy period of time and on four separate occasions," Reif wrote.

Thompson maintained during trial that the device was given to him as a gag gift by a hunting buddy and denied ever using it during trials. The Supreme Court said he never responded to requests for a hearing on his disbarment.

Thompson's attorney, Clark Brewster, said Thompson never had any intention of practicing law after he resigned in 2004 when the allegations were first made.