Treatment system for surgery and control method of treatment system for surgery

1. 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.

2. The treatment system for surgery according to claim 1 , wherein

the handpiece includes an ultrasonic transducer and an ultrasonic probe, and

the handpiece driving apparatus includes an ultrasonic transducer driving circuit for driving the ultrasonic transducer.

3. The treatment system for surgery according to claim 2 , wherein

the handpiece further includes an active electrode to which high-frequency current is supplied, and

the handpiece driving apparatus includes a high-frequency driving circuit for supplying high-frequency current to the active electrode.

4. The treatment system for surgery according to claim 3 , wherein the handpiece includes a positioning mechanism for selectively positioning the active electrode with respect to the ultrasonic probe.

5. The treatment system for surgery according to claim 3 , wherein the ultrasonic probe includes a channel penetrating from a rear end to a distal end of the ultrasonic probe, and the active electrode is insertable into the channel.

6. The treatment system for surgery according to claim 1 , wherein

the handpiece includes an active electrode to which high-frequency current is supplied, and

the handpiece driving apparatus includes a high-frequency driving circuit for supplying high-frequency current to the active electrode.

7. The treatment system for surgery according to claim 1 , wherein the perfusion apparatus includes: a liquid source of the liquid; a liquid feeding conduit connected to the liquid source; a liquid feeding pump for pumping out the liquid in the liquid feeding conduit; a drainage conduit; a drainage valve for opening and closing the drainage conduit; and a pressure sensor for monitoring the pressure in the body cavity.

8. The treatment system for surgery according to claim 1 , further comprising a switch capable of driving the control section to change a flow rate of the liquid, even in a state where the handpiece driving apparatus is not supplying the electric energy to the handpiece.

9. A control method of a treatment system for surgery by a control section, the control method comprising:

controlling a perfusion apparatus, by the control section, in accordance with an output state of a handpiece driving apparatus for supplying electric energy to a handpiece having a treatment portion insertable into a body cavity, and based on pressure detected by a pressure sensor for monitoring pressure in the body cavity to perform feeding and drainage of a liquid 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 a 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.

10. The control method of the treatment system for surgery according to claim 9 , wherein the control section controls the perfusion apparatus such that a flow rate of the feeding and drainage of the liquid when the handpiece is driven is larger than a flow rate of the feeding and drainage of the liquid when the handpiece is not driven.

11. The control method of the treatment system for surgery according to claim 10 , wherein the control section controls the perfusion apparatus to perform the feeding and drainage of the liquid in response to operation of a predetermined switch even in a state where the handpiece driving apparatus is not supplying the electric energy to the handpiece.

12. The control method of the treatment system for surgery according to claim 9 , wherein the control section controls the perfusion apparatus to perform the feeding and drainage of the liquid in response to operation of a predetermined switch even in a state where the handpiece driving apparatus is not supplying the electric energy to the handpiece.