SURGICAL DEVICE, OUTER TUBE, ENDOSCOPE, AND TREATMENT TOOL

• US 20160022122A1
• Filed: 09/29/2015
• 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 10,485,407 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 1/00128 mechanical, e.g. for tubes or pipes
• CPC Class Codes: A61B 1/00154 using guiding arrangements for insertion
• CPC Class Codes: A61B 1/06 with illuminating arrangements
• CPC Class Codes: A61B 17/28 Surgical forceps for holding suture needles or materials A61B17/0483; for removing or smashing calculi A61B17/221; surgical scissors A61B17/3201 ; obstetrical forceps A61B17/44; for inserting intraocular lenses A61F2/1662; hand-held gripping tools in general B25B7/00 ]
• 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 2017/00845 of moving parts with respect to each other
• 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

A surgical device, an outer tube, an endoscope, and a treatment tool that have a compact configuration and achieve high durability are provided. The outer tube includes a slider in an outer tube body. When the endoscope and the treatment tool are inserted into the outer tube, and are held by an endoscope holding part and a treatment tool holding part each being provided in the slider, and are combined into a single unit. Consequently, when the treatment tool is moved in the axial direction, the endoscope is moved in the axial direction in interlock with the movement. Because the outer tube is configured such that the endoscope exit port has an inner diameter that is smaller than the inner diameter of the elastic member provided to hold the endoscope at the endoscope holding part, the strength of the endoscope can be secured while preventing interference with the treatment tool.

Claims

1. A surgical device comprising:

a first medical instrument that includes an insertion part;

a second medical instrument that includes an insertion part; and

an outer tube into which the insertion part of the first medical instrument and the insertion part of the second medical instrument are inserted, and is configured to guide the insertion part of the first medical instrument and the insertion part of the second medical instrument into a body cavity, wherein

the outer tube comprises;

a cylindrical outer tube body into which the insertion part of the first medical instrument and the insertion part of the second medical instrument are inserted;

a first entry port provided at a proximal end part of the outer tube body;

a second entry port provided at the proximal end part of the outer tube body;

a first exit port provided at a distal end part of the outer tube body;

a second exit port provided at the distal end part of the outer tube body;

a movable object which is arranged in the outer tube body and is configured to be movable in the outer tube body in an axial direction;

a first holding part which is provided at the movable object and configured to hold the insertion part of the first medical instrument inserted into the outer tube body; and

a second holding part which is provided at the movable object and configured to hold the insertion part of the second medical instrument inserted into the outer tube body, and

the insertion part of the first medical instrument comprises;

a part which is to be held by the first holding part and has a first diameter A1; and

a part which is disposed closer to a distal end than the part having the first diameter A1, and is configured to be delivered to protrude out of the first exit port, and has a second diameter A2 smaller than the first diameter A1.

2. The surgical device according to claim 1, wherein

the insertion part of the second medical instrument comprises:

a part which is to be held by the second holding part and has a first diameter B1; and

a part which is disposed closer to a distal end than the part having the first diameter B1, and is configured to be delivered to protrude out of the second exit port, and has a second diameter B2 smaller than the first diameter B1.

3. The surgical device according to claim 1, wherein the first medical instrument is an endoscope.

4. The surgical device according to claim 1, wherein

the first holding part includes an annular elastic member through which the insertion part of the first medical instrument is inserted, and which is configured to hold the insertion part of the first medical instrument by means of an elastic force, and

the first exit port has an inner diameter smaller than an inner diameter of the elastic member.

5. The surgical device according to claim 1, wherein

the movable object comprises:

a movable object main body configured to be movable with respect to the outer tube body in the axial direction; and

a movable part configured to be movable with respect to the movable object main body in the axial direction, and

one of the first holding part and the second holding part is provided in the movable part, and another one of the first holding part and the second holding part is provided in the movable object main body.

6. The surgical device according to claim 1, wherein

the outer tube further includes a first sealing member which is provided at the first entry port and configured to slidably seal the insertion part of the first medical instrument, and

the insertion part of the first medical instrument further includes a part which is disposed closer to a proximal end than the part having the first diameter A1, and is configured to maintain hermeticity with the first sealing member, and has a third diameter A3 smaller than the first diameter A1.

7. The surgical device according to claim 1, wherein

the outer tube further includes a first sealing member which is provided at the first entry port and configured to slidably seal the insertion part of the first medical instrument, and

the insertion part of the first medical instrument further includes a part which is disposed closer to a proximal end than the part having the first diameter A1, and is configured to maintain hermeticity with the first sealing member, and has a third diameter A3 larger than the first diameter A1.

8. The surgical device according to claim 2, wherein

the outer tube further includes a second sealing member which is provided at the second entry port and configured to slidably seal the insertion part of the second medical instrument, and

the insertion part of the second medical instrument further includes a part which is disposed closer to a proximal end than the part having the first diameter B1, and is configured to maintain hermeticity with the second sealing member, and has a third diameter B3 smaller than the first diameter B1.

9. The surgical device according to claim 2, wherein

the outer tube further includes a second sealing member which is provided at the second entry port and configured to slidably seal the insertion part of the second medical instrument, and

the insertion part of the second medical instrument further includes a part which is disposed closer to a proximal end than the part having the first diameter B1, and is configured to maintain hermeticity with the second sealing member, and has a third diameter B3 larger than the first diameter B1.

10. An outer tube into which an insertion part of a first medical instrument and an insertion part of a second medical instrument are inserted, and is configured to guide the insertion part of the first medical instrument and the insertion part of the second medical instrument into a body cavity, the outer tube comprising:

a cylindrical outer tube body into which the insertion part of the first medical instrument and the insertion part of the second medical instrument are inserted;

a first entry port provided at a proximal end part of the outer tube body;

a second entry port provided at the proximal end part of the outer tube body;

a first exit port provided at a distal end part of the outer tube body;

a second exit port provided at the distal end part of the outer tube body;

a movable object which is arranged in the outer tube body and is configured to be movable in the outer tube body in an axial direction;

a first holding part which is provided at the movable object and configured to hold the insertion part of the first medical instrument inserted into the outer tube body; and

a second holding part which is provided at the movable object and configured to hold the insertion part of the second medical instrument inserted into the outer tube body, wherein

the insertion part of the first medical instrument comprises;

a part which is to be held by the first holding part and has a first diameter A1; and

a part which is disposed closer to a distal end than the part having the first diameter A1, and is configured to be delivered to protrude out of the first exit port, and has a second diameter A2 smaller than the first diameter A1.

11. The outer tube according to claim 10, wherein

the insertion part of the second medical instrument comprises:

a part which is to be held by the second holding part and has a first diameter B1; and

a part which is disposed closer to a distal end side than the part having the first diameter B1, and is delivered to protrude out of the second exit port, and has a second diameter B2 smaller than the first diameter B1.

12. The outer tube according to claim 10, wherein

the movable object comprises:

a movable object main body configured to be movable with respect to the outer tube body in the axial direction; and

a movable part configured to be movable with respect to the movable object main body in the axial direction, and

one of the first holding part and the second holding part is provided in the movable part, and another one of the first holding part and the second holding part is provided in the movable object main body.

13. The outer tube according to claim 10, further comprising

a first sealing member which is provided at the first entry port, and is configured to slidably seal the insertion part of the first medical instrument, wherein

the insertion part of the first medical instrument further includes a part which is disposed closer to a proximal end than the part having the first diameter A1, and is configured to maintain hermeticity with the first sealing member, and has a third diameter A3 smaller than the first diameter A1.

14. The outer tube according to claim 10, further comprising

a first sealing member which is provided at the first entry port, and is configured to slidably seal the insertion part of the first medical instrument, wherein

the insertion part of the first medical instrument further includes a part which is disposed closer to a proximal end than the part having the first diameter A1, and is configured to maintain hermeticity with the first sealing member, and has a third diameter A3 larger than the first diameter A1.

15. The outer tube according to claim 11, further comprising

a second sealing member which is provided at the second entry port, and is configured to slidably seal the insertion part of the second medical instrument, wherein

the insertion part of the second medical instrument further includes a part which is disposed closer to a proximal end than the part having the first diameter B1, and is configured to maintain hermeticity with the second sealing member, and has a third diameter B3 smaller than the first diameter B1.

16. The outer tube according to claim 11, further comprising

a second sealing member which is provided at the second entry port, and is configured to slidably seal the insertion part of the second medical instrument, wherein

the insertion part of the second medical instrument further includes a part which is disposed closer to a proximal end than the part having the first diameter B1, and is configured to maintain hermeticity with the second sealing member, and has a third diameter B3 larger than the first diameter B1.

17. An endoscope to be inserted into a body cavity through an outer tube which comprises:

a cylindrical outer tube body into which an insertion part of the endoscope and an insertion part of a treatment tool are inserted;

an endoscope entry port provided at a proximal end part of the outer tube body;

a treatment tool entry port provided at the proximal end part of the outer tube body;

an endoscope exit port provided at a distal end part of the outer tube body;

a treatment tool exit port provided at the distal end part of the outer tube body;

a movable object which is arranged in the outer tube body and configured to be movable in the outer tube body in an axial direction;

an endoscope holding part which is provided at the movable object and configured to hold the insertion part of the endoscope inserted into the outer tube body; and

a treatment tool holding part which is provided at the movable object and configured to hold the insertion part of the treatment tool inserted into the outer tube body, wherein

the insertion part comprises;

a part which is to be held by the endoscope holding part and has a first diameter A1; and

a part which is disposed closer to a distal end than the part having the first diameter A1, and is configured to be delivered to protrude out of the endoscope exit port, and has a second diameter A2 smaller than the first diameter A1.

18. The endoscope according to claim 17, wherein

the outer tube further includes an endoscope sealing member which is provided at the endoscope entry port, and is configured to slidably seal the insertion part of the endoscope, and

the insertion part of the endoscope further includes a part which is disposed closer to a proximal end than the part having the first diameter A1, and is configured to maintain hermeticity with the endoscope sealing member, and has a third diameter A3 smaller than the first diameter A1.

19. The endoscope according to claim 17, wherein

the outer tube further includes an endoscope sealing member which is provided at the endoscope entry port, and is configured to slidably seal the insertion part of the endoscope, and

the insertion part of the endoscope further includes a part which is disposed closer to a proximal end than the part having the first diameter A1, and is configured to maintain hermeticity with the endoscope sealing member, and has a third diameter A3 larger than the first diameter A1.

20. A treatment tool to be inserted into a body cavity through an outer tube which comprises:

a cylindrical outer tube body through which an insertion part of an endoscope and an insertion part of the treatment tool are inserted;

an endoscope entry port provided at a proximal end part of the outer tube body;

a treatment tool entry port provided at the proximal end part of the outer tube body;

an endoscope exit port provided at a distal end part of the outer tube body;

a treatment tool exit port provided at the distal end part of the outer tube body;

a movable object which is arranged in the outer tube body and configured to be movable in the outer tube body in an axial direction;

an endoscope holding part which is provided at the movable object and is configured to hold the insertion part of the endoscope inserted into the outer tube body; and

a treatment tool holding part which is provided at the movable object and is configured to hold the insertion part of the treatment tool inserted into the outer tube body, wherein

the insertion part comprises;

a part which is to be held by the treatment tool holding part and has a first diameter B1; and

a part which is disposed closer to a distal end than the part having the first diameter B1, is configured to be delivered to protrude out of the treatment tool exit port, and has a second diameter B2 smaller than the first diameter B1.