METHOD OF TAKING OUT LIQUID PRESENT INSIDE SUBJECT THEREFROM

• US 20130085414A1
• Filed: 09/30/2011
• Published: 04/04/2013
• Est. Priority Date: 09/30/2011
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: Yamatani, Ken, Kaji, Kunihide
• Granted Patent: US 8,801,630 B2
• Time in Patent Office: Days
• US Class Current: 600/573
• CPC Class Codes: A61B 1/015 Control of fluid supply or evacuation
• CPC Class Codes: A61B 10/0045 Devices for taking samples of body liquids devices for taking blood samples A61B5/15
• CPC Class Codes: A61B 10/04 Endoscopic instruments

Abstract

A method is provided to collect liquid, such as pancreatic juice water, and saline, from a body cavity of a subject. In the method, a tool is inserted through the body cavity to reach a target site in the body cavity. A body position of the subject is adjusted such that the wall surface of the body cavity including the target site intersects with a direction of gravitational force and the liquid present in the body cavity gathers on the wall surface intersecting with the direction of gravitational force. A recess is formed to be concaved on the wall surface in the direction of the gravitational force by making the tool press the wall surface of the body cavity. Therefore, the liquid present or discharged in the body cavity is accumulated in the recess. The liquid accumulated in the recess is taken out of the body of the subject.

Claims

1. A method of taking out liquid present in a body cavity of a subject from the body cavity outside the subject, the method comprising:

a first step of inserting a tool through the body cavity of the subject to reach a target site in the body cavity, the tool being for pressing press a wall surface of the body cavity;

a second step of adjusting a body position of the subject such that the wall surface of the body cavity including the target site intersects with a direction of gravitational force and the liquid present in the body cavity gathers on the wall surface intersecting with the direction of gravitational force;

a third step of forming a recess concaved on the wall surface in the direction of the gravitational force by making the tool press the wall surface of the body cavity;

a fourth step of accumulating the liquid present in the body cavity in the recess; and

a fifth step of taking out, outside of the body of the subject, the liquid accumulated in the recess.

2. The method of claim 1, wherein the fourth step includes a step of shaking the body of the subject from outside of the body during accumulation of the liquid.

3. The method of claim 2, wherein the tool is a colleting tool which collects the liquid from the recess.

4. The method of claim 3, wherein the colleting tool is an aspiration tool which aspirates the liquid outside the subject.

5. The method of claim 1, wherein the tool is guided to the target site by making the tool advance in along a long-axis member having a curved section at a tip thereof.

6. The method of claim 5, wherein the long-axis member is an endoscope with a channel, and

the tool is guided to the target site along the channel of the endoscope.

7. The method of claim 3, wherein the third step includes

a step of projecting a tip portion of the collecting tool from a tip of an inserting section of an endoscope and

a step of curving a curved section of the endoscope towards the wall surface side at the target site in a state in which the tip portion of the collecting tool is projecting from the tip of the channel of the inserting section of the endoscope, the inserting section having a tip rigid section adjacently connected to the curved section.

8. The method of claim 3, wherein the fourth step is a step requiring wait-time that is either waiting in a state where formation of the recess is maintained until a desired amount of the liquid is accumulated in the recess, or waiting for a certain amount of time in a state in which formation of the recess is maintained.

9. The method of claim 8, wherein the third step is a step of continuously forming the recess by continuously moving the inserting section of the endoscope while maintaining the state in which the recess is formed.

10. The method of claim 3, wherein the collecting tool is inserted into a channel of the inserting section of the flexible endoscope inserted into the body cavity of the subject.

11. The method of claim 3, wherein the liquid taken out by the collecting tool is a body fluid present inside of the body of the subject or a liquid substance brought into the body from outside for surgery or examination.