FIVE staff at the Central Remedial Clinic travelled to Florida for a conference where four gave a "10-minute lecture" between them, the Dail committee heard.
The 2009 trip was among a series of destinations across the globe where senior CRC staff travelled to in recent years.
Independent TD Shane Ross, who obtained the information, said a number of the trips were undertaken by CRC manager Simon Hall.
Mr Hall went on eight trips to conference venues since 2006.
Committee chairman John McGuinness asked the HSE to find out more about a Visa credit card which was linked to the Central Remedial Clinic Medical Devices company.
Mr McGuinness asked former chief executive Brian Conlan about the company's Visa card. "It paid for something for people who were employed by CRC. I want to know the extent of it and what the payments were for."
Mr Conlan said it could have involved certain amounts of travel. Mr Conlan was on the board of the CRC for eight years, but said board members would not have been aware of what travel staff undertook.
He himself went on two trips, including one to Dusseldorf.
Mr Ross also asked about "study days" to six countries around Europe as part of the European Seating Symposium (ESS) by the CRC.
Mr Ross asked was the expense justified. Mr Conlan said: "I didn't sign off on any trips", but he described the ESS as "very profitable venture" for the group.