MEDICAL INSTRUMENT GUIDING DEVICE

• US 20160015256A1
• Filed: 09/29/2015
• Published: 01/21/2016
• Est. Priority Date: 03/29/2013
• Status: Active Grant

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: IWASAKA, Masayuki
• Granted Patent: US 10,470,646 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 1/00131 Accessories for endoscopes
• CPC Class Codes: A61B 1/00133 Drive units for endoscopic tools inserted through or with the endoscope
• CPC Class Codes: A61B 1/00135 Oversleeves mounted on the endoscope prior to insertion
• CPC Class Codes: A61B 1/00154 using guiding arrangements for insertion
• CPC Class Codes: A61B 1/012 characterised by internal passages or accessories therefor
• CPC Class Codes: A61B 1/3132 for laparoscopy
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3423 Access ports, e.g. toroid shape introducers for instruments or hands access sites for liquids A61M39/0247
• 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 2017/3409 including needle or instrument drives
• 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 2017/3447 Linked multiple cannulas
• CPC Class Codes: A61B 2017/3466 for simultaneous sealing of multiple instruments
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 2090/306 using optical fibres
• CPC Class Codes: A61B 90/361 Image-producing devices, e.g. surgical cameras

Abstract

A medical instrument guiding device (outer tube) to be tapped into a body wall includes: an endoscope insertion hole for inserting the endoscope; a treatment tool insertion hole for inserting the treatment tool; and an interlocking mechanism for moving the endoscope back and forth in interlock with the back-and-forth movement of the treatment tool. The interlocking mechanism includes an endoscope-side roller contacts with an endoscope insertion part and moves in interlock with the endoscope insertion part, and a treatment tool-side roller which contacts with a treatment tool insertion part and moves in interlock with the treatment tool insertion part, and those rollers rotates in interlock with each other. In response to the movement of the treatment tool insertion part, the treatment tool-side roller and the endoscope-side roller rotate in an opposite direction to move the endoscope insertion part.

Claims

1. A medical instrument guiding device comprising:

a guide member configured to penetrate a body wall and to be inserted in a body cavity;

an endoscope insertion hole which is provided in the guide member and into which an endoscope that performs observation in the body cavity can be inserted so as to be freely movable back and forth;

a treatment tool insertion hole which is provided in the guide member and into which a treatment tool that inspects or treats a diseased site in the body cavity can be inserted so as to be freely movable back and forth; and

a back-and-forth movement transmission mechanism which is configured to transmit back-and-forth movement of the treatment tool to the endoscope, is provided in the inside of the guide member, and includes a rotation member which has a rotation axis that three-dimensionally intersects with a longitudinal axis of the treatment tool insertion hole and rotates according to the back-and-forth movement of the treatment tool.

2. The medical instrument guiding device according to claim 1, wherein the back-and-forth movement transmission mechanism includes:

a treatment tool-side rotation member which is provided as the rotation member, and is configured to rotate in interlock with the back-and-forth movement of the treatment tool; and

an endoscope-side rotation member which is configured to rotate in interlock with rotation of the treatment tool-side rotation member and to move the endoscope back and forth.

3. The medical instrument guiding device according to claim 2, wherein the endoscope-side rotation member is directly in contact and coupled with the treatment tool-side rotation member and rotates in interlock with the rotation of the treatment tool-side rotation member.

4. The medical instrument guiding device according to claim 2, wherein a rotation axis of the treatment tool-side rotation member and a rotation axis of the endoscope-side rotation member are disposed in a direction orthogonal to a plane parallel to an axis of the treatment tool insertion hole and an axis of the endoscope insertion hole.

5. The medical instrument guiding device according to claim 2, wherein a rotation axis of the treatment tool-side rotation member and a rotation axis of the endoscope-side rotation member three-dimensionally intersect with each other.

6. The medical instrument guiding device according to claim 1, wherein a rotation axis of the rotation member is disposed in parallel to a plane which contacts with an outer peripheral surface of the treatment tool and an outer peripheral surface of the endoscope from one identical direction.

7. The medical instrument guiding device according to claim 1, wherein:

an axis of the treatment tool insertion hole and an axis of the endoscope insertion hole are disposed in nonparallel with each other; and

a rotation axis of the rotation member is disposed in a direction orthogonal to a plane which is parallel to the axis of the treatment tool insertion hole and the axis of the endoscope insertion hole.

8. The medical instrument guiding device according to claim 1, wherein:

the treatment tool includes an operation part, an insertion part and a treatment part;

the insertion part includes a large diameter part having a first outer diameter and a small diameter part having a second outer diameter which is smaller than the first outer diameter; and

the rotation member contacts with the large diameter part and rotates according to the back-and-forth movement of the treatment tool, and does not contact with the small diameter part nor rotate according to the back-and-forth movement of the treatment tool.

9. The medical instrument guiding device according to claim 1, wherein

the treatment tool insertion hole further includes an allowance generation member, and

the rotation member transmits the back-and-forth movement of the treatment tool to the endoscope through the allowance generation member.

10. The medical instrument guiding device according to claim 1, wherein

the endoscope insertion hole further includes an allowance generation member, and

the rotation member transmits the back-and-forth movement of the treatment tool to the endoscope through the allowance generation member.

11. The medical instrument guiding device according to claim 2, further comprising an allowance generation member provided between the treatment tool-side rotation member and the endoscope-side rotation member.