Patent ID: 8287485

Claim:
A treatment system for surgery comprising: a handpiece driving apparatus for supplying electric energy to a handpiece, the handpiece including a treatment portion insertable into a body cavity; a perfusion apparatus for perfusing liquid in the body cavity, the perfusion apparatus being capable of adjusting pressure in the body cavity; and a control section for receiving a signal indicative of an output state of the handpiece driving apparatus, and for controlling the pressure in the body cavity to a different level and changing a flow rate of the liquid in conjunction with the output state of the handpiece driving apparatus, by controlling the perfusion apparatus in accordance with the received signal such that a pressure level in the body cavity when the handpiece is driven is higher than a pressure level in the body cavity when the handpiece is not driven, and such that the flow rate of the liquid when the handpiece is driven is larger than the flow rate of the liquid when the handpiece is not driven.