Energy accessory

• US 7,909,824 B2
• Filed: 04/28/2006
• Issued: 03/22/2011
• Est. Priority Date: 06/15/2004
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Masuda, Shinya, Shimizu, Koh, Kimura, Kenichi
• Primary Examiner(s): Nguyen; Anhtuan T
• Assistant Examiner(s): EASTWOOD, DAVID C
• Application Number:
  US11/413,725
• Publication Number:
  US 20060259054A1
• Time in Patent Office: 1,789 Days
• Field of Search: 606/48, 606/169, 606/37, 606/42, 606/52, 606/51, 604/22, 600/437, 439/909
• US Class Current: 606/51
• 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 including a proximal end 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;

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

a jaw provided on a distal end portion of the sheath and configured to be opened and closed with respect to the probe;

a first electrode provided on the jaw;

a shaft provided within the sheath movable in a longitudinal axial direction of the probe with respect to the probe, including a distal end portion connected to the jaw, wherein the shaft is configured to be moved in the longitudinal axial direction to open and close the jaw with respect to the probe;

an outer tube provided on the sheath movable in the longitudinal axial direction of the probe with respect to the probe and including a distal end portion; and

a second electrode provided on the distal end portion of the outer tube, configured to be moved between a distal grasping position wherein the second electrode faces the jaw and a proximal non-grasping position wherein the second electrode is arranged closer to the proximal end side than the jaw, by moving the outer tube in the longitudinal axial direction of the probe with respect to the probe, and configured so that a high frequency current is to flow between the first electrode and the second electrode, and

wherein the energy accessory is configured to grasp a living tissue by the jaw and the probe to perform a treatment to the living tissue grasped by the jaw and the probe by use of ultrasonic vibration of the probe when the second electrode is positioned in the non-grasping position and configured to grasp a living tissue by the jaw and the second electrode to perform a treatment to the living tissue grasped by the jaw and the second electrode by use of a high frequency current flowing between the first electrode and the second electrode through the living tissue grasped by the jaw and the second electrode when the second electrode is positioned in the grasping position jaw.

2. The energy accessory according to claim 1, further comprising:

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 positioned in the non-grasping position.

3. The energy accessory according to claim 1, wherein the jaw includes an ultrasonic grasping part and a high frequency grasping part provided with the first electrode,

the ultrasonic grasping part and the probe are configured to grasp a living tissue when the second electrode is positioned in the non-grasping position, and

the high frequency grasping part and the second electrode are configured to grasp a living tissue when the second electrode is positioned in the grasping position.

4. The energy accessory according to claim 3,

wherein the first electrode is attached to the jaw and arranged on both sides of the ultrasonic grasping part, and

the outer tube includes the second electrode arranged on both sides of the probe when the second electrode is positioned in the grasping position.

5. The energy accessory according to claim 2,

wherein the interrupting mechanism including a first and a second electric connecting member, and an urging member configured to urge the first electric connecting member toward the second electric connecting member, and an interrupting portion provided on the outer tube,

wherein the interrupting portion is configured to be put out between the first electric connecting member and the second electric connecting member by the outer tube wherein the first electric connecting member is to be brought into contact with the second electric connecting member due to the urging by the urging member to enable a high frequency current to flow to the first and the second electrode through the first and second electric connecting member when the second electrode is positioned in the grasping position, and configured to be put between the first electric connecting member and the second electric connecting member by the outer tube wherein the interrupting portion is to disable a high frequency current to flow to the first and the second electrode through the first and the second electric connecting member when the second electrode is positioned in the non-grasping position.