| 摘要 |
Provided are a treatment instrument and a treatment system, which are capable of performing cutting treatment and blood stanching treatment in arthroscopic surgery. A treatment instrument 14 used in an environment filled with an electrically conductive liquid comprises: a probe 27 having a distal end for cutting, by means of ultrasonic vibration, an area to be treated, the distal end functioning as one bipolar electrode; a hollow sheath 28 surrounding the probe 27; and insulation members 32, 33 for covering the sheath 28 except a part of the distal end of the sheath. The part of the distal end of the sheath 28 functions as the other bipolar electrode. |
