ENDOSCOPIC SURGERY DEVICE, METHOD OF INSERTING ENDOSCOPE AND TREATMENT TOOL, AND METHOD OF REMOVING ENDOSCOPE AND TREATMENT TOOL

• US 20160022118A1
• Filed: 09/25/2015
• Published: 01/28/2016
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: DEJIMA, TAKUMI
• Granted Patent: US 9,949,616 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 1/00087 Tools A61B17/00234 takes precedence
• CPC Class Codes: A61B 1/00154 using guiding arrangements for insertion
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3462 with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals expandable cannulas A61B17/3417
• CPC Class Codes: A61B 2017/3441 with distal sealing means
• CPC Class Codes: A61B 2017/3445 used as instrument channel for multiple instruments catheters A61B2017/22072
• CPC Class Codes: A61B 2017/3466 for simultaneous sealing of multiple instruments

Abstract

An endoscope and a treatment tool which are inserted into an outer tube can move back and forth in interlock with each other, and an operation part of the treatment tool can be prevented from interfering with a proximal end of the endoscope when inserting the treatment tool into the outer tube. An endoscopic surgery device satisfies the following expressions: Lt≦Ls<Lh, and Lh≧Ls1+Ls+t, where Lt is a length of the outer tube, Ls is a length of a hard part of the insertion part of the endoscope, Lh is a length of a hard part of the insertion part of the treatment tool, Ls1 is a minimum projection length of a distal end of the insertion part of the treatment tool with respect to a distal end of the insertion part of the endoscope, and t is an allowance amount.

Claims

1. An endoscopic surgery device comprising:

an endoscope which includes a linear insertion part and is configured to observe a body cavity;

a treatment tool including a linear insertion part whose proximal end is provided with an operation part; and

an outer tube which is configured to allow each of the insertion part of the endoscope and the insertion part of the treatment tool to be movable back and forth, and in which the insertion part of the treatment tool relatively is movable back and forth with an allowance with respect to the insertion part of the endoscope,

wherein the endoscopic surgery device satisfies expressions of Lt≦

Ls<

Lh, and Lh≧

Ls1+Ls+t, where

Lt (mm) is a length of the outer tube, Ls (mm) is a length of a hard part of the insertion part of the endoscope, Lh (mm) is a length of a hard part of the insertion part of the treatment tool, Ls1 (mm) is a minimum projection length of a distal end of the insertion part of the treatment tool with respect to a distal end of the insertion part of the endoscope, and t (mm) is an allowance amount of the insertion part of the treatment tool with respect to the insertion part of the endoscope.

2. The endoscopic surgery device according to claim 1, wherein the minimum projection length Ls1 satisfies Ls1≧

0.

3. The endoscopic surgery device according to claim 2, wherein the minimum projection length Ls1 is a length with which at least the distal end of the insertion part of the treatment tool is positioned in an observation field of view of the endoscope.

4. The endoscopic surgery device according to claim 1, wherein a distance between centers of the insertion part of the endoscope and the insertion part of the treatment tool in the outer tube is set shorter than a distance between an axial center of the insertion part of the treatment tool and at least a part of the operation part of the treatment tool.

5. The endoscopic surgery device according to claim 1, wherein the distal end of the insertion part of the treatment tool has a treatment part, and the operation part of the treatment tool is a handle part configured to operate the treatment part.

6. The endoscopic surgery device according to claim 1, wherein a flexible cable is coupled to a proximal end of the insertion part of the endoscope.

7. The endoscopic surgery device according to claim 1, wherein the distal end of the insertion part of the endoscope has an observation device.

8. The endoscopic surgery device according to claim 1, further comprising a coupling member which is arranged inside the outer tube and is configured to couple the insertion part of the endoscope to the insertion part of the treatment tool to allow the insertion part of the treatment tool to move in an axial direction of the outer tube with the allowance amount with respect to the insertion part of the endoscope, wherein the coupling member includes:

a first movable object which is configured to be movable in the axial direction of the outer tube and hold the insertion part of the endoscope inserted into the outer tube; and

a second movable object which is provided in the first movable object, configured to hold the insertion part of the treatment tool inserted into the outer tube, and move in the axial direction of the outer tube by the allowance amount with respect to the first movable object.

9. The endoscopic surgery device according to claim 8, wherein

the first movable object is engaged with the outer tube with a first frictional force, and

the second movable object is engaged with the insertion part of the treatment tool with a second frictional force greater than the first frictional force, engaged with the first movable object with a third frictional force less than the first frictional force, and slides against the first movable object by the allowance amount.

10. A method of inserting an endoscope and a treatment tool into an outer tube by using the endoscopic surgery device according to claim 1, the method comprising:

a first insertion step of inserting an insertion part of the endoscope into the outer tube; and

a second insertion step of inserting an insertion part of the treatment tool into the outer tube into which the insertion part of the endoscope has been inserted.

11. A method of removing an endoscope and a treatment tool from an outer tube by using the endoscopic surgery device according to claim 1, the method comprising:

a first removal step of removing an insertion part of the treatment tool from the outer tube; and

a second removal step of removing an insertion part of the endoscope from the outer tube from which the insertion part of the treatment tool has been removed.