Surgical treatment apparatus

• US 8,097,011 B2
• Filed: 02/26/2008
• Issued: 01/17/2012
• Est. Priority Date: 02/26/2008
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: Kimura, Kenichi, Yamada, Masashi, Sanai, Hideo
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): NGUYEN, TIN DUC
• Application Number:
  US12/037,508
• Publication Number:
  US 20090216257A1
• Time in Patent Office: 1,421 Days
• Field of Search: 606/169, 606/170, 606/171, 606/206, 606/207, 606/107, 604/22, 601/2, 745/67, 285/81
• US Class Current: 606/169
• CPC Class Codes: A61B 17/320068 using mechanical vibrations, e.g. ultrasonic A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• 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 2017/320089 node location
• CPC Class Codes: A61B 2017/320094 additional movable means performing clamping operation

Abstract

A surgical treatment apparatus includes a first unit including a first vibration transmission member and a first holding member, a second unit including a second vibration transmission member, a second holding member, and an elastic member provided between the second vibration transmission member and the second holding member, configured to be deformed in accordance with a relative arrangement of the second vibration transmission member and the second holding member with respect to the axial direction to give the second vibration transmission member an elastic force in the axial direction, and an adjustment coupling mechanism to couple the first unit and the second unit with each other, arrange the first vibration transmission member and the second vibration transmission member coaxially, and adjust a relative arrangement of the first holding member and the second holding member.

Claims

1. A surgical treatment apparatus comprising:

a first unit including a first vibration transmission member extended in an axial direction, including an end portion, and configured to transmit ultrasonic vibration, and a first holding member holding the first vibration transmission member;

a second unit including a second vibration transmission member extended in an axial direction, including an end portion, and configured to transmit the ultrasonic vibration, a second holding member holding the second vibration transmission member movable in the axial direction of the second vibration transmission member, and an elastic member provided between the second vibration transmission member and the second holding member, configured to be deformed in accordance with a relative arrangement of the second vibration transmission member and the second holding member with respect to the axial direction of the second vibration transmission member to give the second vibration transmission member an elastic force in the axial direction; and

a cam mechanism including an actuating receiving portion provided to one of the first holding member and the second holding member, spirally extended around the axial direction, and including a coupling position, and an actuating portion provided to other of the first holding member and the second holding member and configured to be moved along the actuation receiving portion and arranged at the coupling position to couple the first unit and the second unit with each other, arrange the first vibration transmission member and the second vibration transmission member coaxially to abut the end portion of the first vibration transmission member and the end portion of the second vibration transmission member against each other, and adjust a relative arrangement of the first holding member and the second holding member with respect to a coaxial direction to be constant to adjust a deformation amount of the elastic member to be constant, and

wherein the cam mechanism changes a pressure angle with respect to a rotation angle such that a rotating operation force amount is fixed in a rotating operation of relatively moving the first holding member and the second holding member in the coaxial direction against the elastic force of the elastic member.

2. The surgical treatment apparatus according to claim 1, wherein the cam mechanism includes an irregular shape that is convex and concave in a direction crossing the actuation receiving portion in front of the coupling position in the actuation receiving portion.

3. The surgical treatment apparatus according to claim 1, wherein the cam mechanism includes first and second coupling positions arranged at different positions with respect to a circumferential direction.

4. The surgical treatment apparatus according to claim 1, wherein the second vibration transmission member includes a large-outside-diameter portion formed on one end side with respect to the axial direction in the second vibration transmission member, a small-outside-diameter portion formed on the other end side with respect to the axial direction in the second vibration transmission member and having a smaller outside diameter than that of the large-outside-diameter portion, a tapered portion formed between the large-outside-diameter portion and the small-outside-diameter portion in the second vibration transmission member and having an outside diameter reduced from the one end side toward the other end side in the axial direction, and a pressing portion provided on the tapered portion or the smaller-outside-diameter portion and protruded in a radial direction, and the elastic member is provided between the pressing portion and the second holding member with respect to the axial direction.