Energy accessory

• US 20060259054A1
• Filed: 04/28/2006
• Published: 11/16/2006
• Est. Priority Date: 06/15/2004
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Shimizu, Koh, Masuda, Shinya, Kimura, Kenichi
• Granted Patent: US 7,909,824 B2
• Time in Patent Office: Days
• US Class Current: 606/169
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2017/2901 Details of shaft
• CPC Class Codes: A61B 2017/2926 Details of heads or jaws
• CPC Class Codes: A61B 2017/320069 for ablating tissue
• CPC Class Codes: A61B 2017/320071 with articulating means for working tip
• CPC Class Codes: A61B 2017/320082 for incising tissue
• CPC Class Codes: A61B 2017/320094 additional movable means performing clamping operation
• CPC Class Codes: A61B 2017/320095 with sealing or cauterizing means

Abstract

An energy accessory includes an ultrasonic vibrator configured to generate ultrasonic vibration, an elongated probe whose proximal end is connected to the ultrasonic vibrator and configured to transmit the ultrasonic vibration generated by the ultrasonic vibrator from a proximal end side to a distal end side to apply the ultrasonic vibration to living tissue, a sheath provided on the proximal end side of the probe, a grasping portion provided on a distal end portion of the sheath and configured to be rotated with respect to the probe and brought into contact with the living tissue disposed on the side of the probe, whereby the living tissue is grasped in cooperation with the probe, and a treatment mode variable mechanism configured to change a treatment mode of a treatment with respect to the living tissue brought into contact with the grasping portion.

Claims

1. An energy accessory comprising:

an ultrasonic vibrator configured to generate ultrasonic vibration;

an elongated probe whose proximal end is connected to the ultrasonic vibrator and configured to transmit the ultrasonic vibration generated by the ultrasonic vibrator from a proximal end side to a distal end side to apply the ultrasonic vibration to living tissue;

a sheath provided on the proximal end side of the probe;

a grasping portion provided on a distal end portion of the sheath and configured to be rotated with respect to the probe and brought into contact with the living tissue disposed on the side of the probe, whereby the living tissue is grasped in cooperation with the probe; and

a treatment mode variable mechanism configured to change a treatment mode of a treatment with respect to the living tissue brought into contact with the grasping portion.

2. The energy accessory according to claim 1, wherein the treatment mode variable mechanism includes:

an abutment portion configured to abut on the grasping portion, whereby limiting rotation of the grasping portion; and

a movement mechanism configured to moves the abutment portion to change an abutting state between the grasping portion and the abutment portion, whereby adjusting a rotatable amount of the grasping portion to adjust a contact amount between the grasping portion and the probe.

3. The energy accessory according to claim 2, wherein the movement mechanism positions the abutment portion in an abutting position where the abutment portion abuts on the grasping portion and a non-abutment position where the abutment portion abuts on no grasping portion.

4. The energy accessory according to claim 2, wherein the abutment portion has a plurality of abutting positions which set the rotatable amount of the grasping portion to mutually different predetermined rotatable amounts, and

the movement mechanism moves the abutment portion so that any of the plurality of abutting positions abut on the grasping portion.

5. The energy accessory according to claim 2, wherein the abutment portion abuts on only the proximal end of the grasping portion.

6. The energy accessory according claim 2, wherein the movement mechanism includes an outer member provided with an outer periphery of the sheath slidably in a longitudinal-axis direction of the probe, and

the abutment portion is provided on a distal end portion of the outer member.

7. The energy accessory according to claim 1, wherein the treatment mode variable mechanism switches this energy accessory between a state to perform a treatment by use of ultrasonic vibration and a state to perform a treatment by use of a high frequency current.

8. The energy accessory according to claim 7, wherein the treatment mode variable mechanism includes:

a first electrode portion provided on the grasping portion and configured to be brought into contact with the living tissue;

a second electrode portion configured so that a high frequency current flows between the first electrode portion and the second electrode portion; and

a movement mechanism configured to move the second electrode portion between a grasping position wherein the second electrode portion and the first electrode portion grasp the living tissue by rotating the grasping portion and a non-grasping position wherein the second electrode portion and the first electrode portion grasp no living tissue.

9. The energy accessory according to claim 8, wherein the movement mechanism includes an outer member provided with an outer periphery of the sheath slidably in a longitudinal-axis direction of the probe, and

the second electrode portion is provided on a distal end portion of the outer member.

10. The energy accessory according to claim 8, wherein the treatment mode variable mechanism includes an interrupting mechanism configured to prevent automatically a current from flowing between the first electrode portion and the second electrode portion in a case where the second electrode portion is disposed in the non-grasping position.