ULTRASONIC TREATMENT APPARATUS, PROBE FOR THE SAME , AND METHOD OF MANUFACTURING THE APPARATUS AND THE PROBE

• US 20120137504A1
• Filed: 02/13/2012
• Published: 06/07/2012
• Est. Priority Date: 06/16/2005
• Status: Abandoned Application

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: SAKAI, Ryoji
• Application Number:
  US13/371,954
• Publication Number:
  US 20120137504A1
• Time in Patent Office: Days
• US Class Current: 29/596
• CPC Class Codes: A61B 17/320092 with additional movable means for clamping or cutting tissue, e.g. with a pivoting jaw
• CPC Class Codes: A61B 2017/22008 used or promoted
• CPC Class Codes: A61B 2017/22009 reduced or prevented
• CPC Class Codes: A61B 2017/320095 with sealing or cauterizing means
• CPC Class Codes: Y10T 29/49009 Dynamoelectric machine

Abstract

There is provided an ultrasonic treatment apparatus including an ultrasonic oscillator which generates ultrasonic waves, a probe which is connected to the ultrasonic oscillator and transmits ultrasonic oscillations generated by the ultrasonic oscillator, and a treatment portion which is formed on the probe and treats a living tissue by the transmitted ultrasonic oscillations. The treatment portion has a cavitation suppressing portion formed to have such a shape that a pressure of a liquid in a vicinity of an external surface of the cavitation suppressing portion is greater than a saturation vapor pressure of the liquid in fluid analysis concerning ultrasonic oscillations in the liquid.

Claims

1. A method of manufacturing a probe for ultrasonic treatment apparatus, comprising:

preparing a predetermined shape model for at least part of a treatment portion which treats a living tissue by ultrasonic oscillations;

obtaining, by fluid analysis concerning ultrasonic oscillations in a liquid, a pressure distribution of the liquid with respect to the shape model;

changing a shape of the shape model such that a pressure of at least part of portions where the pressure is equal to or less than a saturation vapor pressure of the liquid in the pressure distribution becomes greater than the saturation vapor pressure of the liquid;

alternately repeating the obtaining the pressure distribution of the liquid and the changing the shape of the shape model; and

forming the treatment portion to have a shape of the shape model.

2. A method according to claim 1, wherein

the changing the shape of the shape model includes changing the shape of the shape model such that a drag coefficient is reduced.

3. A method of manufacturing a probe for ultrasonic treatment apparatus, comprising:

preparing a predetermined shape model for at least part of a treatment portion which treats a living tissue by ultrasonic oscillations;

obtaining, by fluid analysis concerning ultrasonic oscillations in a liquid, a pressure distribution of the liquid with respect to the shape model;

changing a shape of the shape model such that a pressure of at least part of portions where the pressure is greater than a saturation vapor pressure of the liquid in the pressure distribution becomes less than the saturation vapor pressure of the liquid;

alternately repeating the obtaining the pressure distribution of the liquid and the changing the shape of the shape model; and

forming the treatment portion to have a shape of the shape model.

4. A method according to claim 3, wherein

the changing the shape of the shape model includes changing the shape of the shape model such that a drag coefficient is increased.

5. A method according to claim 3, further comprising:

changing the shape of the shape model such that a direction of a velocity of the liquid in at least part of portions where the pressure is less than the saturation vapor pressure of the liquid in the pressure distribution corresponds to a direction from the treatment portion toward the tissue in treatment on the tissue.

6. A method of manufacturing an ultrasonic treatment apparatus, comprising a method of manufacturing a probe, including:

preparing a predetermined shape model for at least part of a treatment portion which treats a living tissue by ultrasonic oscillations;

obtaining, by fluid analysis concerning ultrasonic oscillations in a liquid, a pressure distribution of the liquid with respect to the shape model;

changing a shape of the shape model such that a pressure of at least part of portions where the pressure is equal to or less than a saturation vapor pressure of the liquid in the pressure distribution becomes greater than the saturation vapor pressure of the liquid;

alternately repeating the obtaining the pressure distribution of the liquid and the changing the shape of the shape model; and

forming the treatment portion to have a shape of the shape model.

7. A method of manufacturing an ultrasonic treatment apparatus, comprising a method of manufacturing a probe, including:

preparing a predetermined shape model for at least part of a treatment portion which treats a living tissue by ultrasonic oscillations;

obtaining, by fluid analysis concerning ultrasonic oscillations in a liquid, a pressure distribution of the liquid with respect to the shape model;

changing a shape of the shape model such that a pressure of at least part of portions where the pressure is greater than a saturation vapor pressure of the liquid in the pressure distribution becomes less than the saturation vapor pressure of the liquid;

alternately repeating the obtaining the pressure distribution of the liquid and the changing the shape of the shape model; and

forming the treatment portion to have a shape of the shape model.