INSERTION BODY, INSERTION APPARATUS, ROTATION UNIT AND ROTATIVE FORCE TRANSMISSION UNIT

• US 20140296771A1
• Filed: 03/31/2014
• Published: 10/02/2014
• Est. Priority Date: 08/31/2012
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: NAITO, Kimihiko
• Granted Patent: US 9,677,599 B2
• Time in Patent Office: Days
• US Class Current: 604/19
• 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 1/00148 using anchoring means
• CPC Class Codes: A61B 1/00156 using self propulsion
• CPC Class Codes: A61B 1/0016 using motor drive units
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 1/121 provided with means for cleaning post-use
• CPC Class Codes: A61B 17/1631 Special drive shafts, e.g. flexible shafts A61B17/1642, A61B17/164 take precedence
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: F16C 1/06 with guiding sheathing, tube or box F16C1/04 takes precedence; guiding sheathings F16C1/26
• CPC Class Codes: F16C 1/08 End connections
• CPC Class Codes: G02B 23/2476 Non-optical details, e.g. housings, mountings, supports

Abstract

An insertion body includes: a base arranged in the central axis; a rotating body provided on an outer periphery of the base and rotatable around the central axis; and a channel which includes a guide provided at the base such that the rotative force transmitting section is able to be guided between a first position in which the rotative force transmitting section in the longitudinal axis can be inclined from the central axis when the rotative force transmission unit is inserted from the outside to the inside and a second position in which the rotative force transmitting section in the longitudinal axis is parallel to the central axis and a rotative force can be transmitted to the rotating body from the rotative force transmitting section, and through which the rotative force transmission unit is inserted through the opening end and the guide.

Claims

1. An elongated insertion body of an insertion apparatus in which a rotation unit rotatable around a central axis is provided on an external side of the insertion body, and into which a rotative force transmission unit including a rotative force transmitting section rotatable around a longitudinal axis different from the central axis and capable of transmitting a rotative force to the rotation unit is able to be inserted from an outside to an inside and removed from the inside to the outside of the insertion body, the insertion body comprising:

a base arranged in the central axis;

a rotating body provided on an outer periphery of the base and rotatable around the central axis; and

a channel which includes a guide provided at the base such that the rotative force transmitting section is able to be guided between a first position in which the rotative force transmitting section in the longitudinal axis is able to be inclined from the central axis when the rotative force transmission unit is inserted from the outside to the inside or removed from the inside to the outside and a second position in which the rotative force transmitting section in the longitudinal axis is parallel to the central axis and a rotative force is able to be transmitted to the rotating body from the rotative force transmitting section, and an opening end provided at a distal end of the channel, and through which the rotative force transmission unit is inserted through the opening end and the guide.

2. The insertion body according to claim 1, wherein the rotating body is movable in a direction of the central axis with respect to the base.

3. The insertion body according to claim 1, wherein the rotative force transmitting section of the rotative force transmission unit is arranged on a distal side than the guide in the central axis of the insertion body in a state that the rotative force transmission unit is inserted through the channel and the guide is in the second position.

4. The insertion body according to claim 1, wherein the guide includes a pivot shaft provided on the base, a swing member which is configured to swing around the pivot shaft, and a support portion provided on the swing member and configured to guide the rotative force transmission unit.

5. The insertion body according to claim 4, wherein the support portion supports the rotative force transmission unit such that the rotative force transmission unit is rotatable around the longitudinal axis.

6. The insertion body according to claim 1, wherein the channel includes a restricting member configured to restrict movement of the rotative force transmitting section to a proximal side of each of the rotative force transmission unit and the channel in the longitudinal axis.

7. The insertion body according to claim 6, wherein the restricting member of the channel includes a ring-shaped member which permits rotation of the rotative force transmission unit around the longitudinal axis of the rotative force transmission unit and prevents movement of the rotative force transmission unit in a direction of the longitudinal axis.

8. The insertion body according to claim 1, wherein the guide is provided in the vicinity of the opening end.

9. The insertion body according to claim 1, wherein the opening end is open into an outside of the base.

10. An insertion apparatus comprising:

an insertion body according to claim 1; and

a rotative force transmission unit which is able to be inserted from an outside to an inside of the insertion body and removed from the inside to the outside of the insertion body, which includes a rotative force transmitting section which is rotatable around a longitudinal axis different from the central axis of the insertion body, and which is capable of transmitting a rotative force to a rotation unit provided on an external side of the insertion body, the rotative force transmission unit including a drive shaft which is able to be inserted through the channel, and which is configured to transmit a driving force from a proximal side to a distal side in the longitudinal axis and configured to transmit the driving force to the rotative force transmitting section.

11. The insertion apparatus according to claim 10, wherein

the rotative force transmitting section includes an outer peripheral gear portion on an outer periphery of the rotative force transmitting section, and

the rotating body includes an inner peripheral gear portion to which a rotative force from the outer peripheral gear portion is transmitted, on an inner periphery of the rotating body.

12. The insertion apparatus according to claim 10, comprising a restricting member configured to restrict movement of the rotative force transmitting section to the rotative force transmission unit and a proximal side of the channel in the longitudinal axis, the restricting member being provided on at least one of the rotative force transmission unit and the channel.

13. The insertion apparatus according to claim 12, wherein

the rotative force transmission unit includes a drive shaft which is able to be inserted through the channel, and which is configured to transmit a driving force from the proximal side to the distal side in the longitudinal axis and configured to transmit the driving force to the rotative force transmitting section, and

the restricting member of the channel includes a ring-shaped member which permits rotation of the drive shaft around the drive shaft and prevents movement of the drive shaft in a direction of the longitudinal axis.

14. The insertion apparatus according to claim 12, wherein

the rotative force transmission unit includes a drive shaft which is able to be inserted through the channel, and which is configured to transmit a driving force from the proximal side to the distal side in the longitudinal axis and configured to transmit the driving force to the rotative force transmitting section, and

the restricting member of the rotative force transmission unit includes a ring-shaped member which permits rotation of the drive shaft around the drive shaft and prevents movement of the drive shaft in a direction of the longitudinal axis.

15. The insertion apparatus according to claim 12, wherein

the rotative force transmission unit includes a drive shaft which is able to be inserted through the channel and which is configured to transmit a driving force from the proximal end side to the distal end side in the longitudinal axis and configured to transmit the driving force to the rotative force transmitting section,

a proximal end of the rotative force transmitting section has an outer diameter greater than the maximum outer diameter of the drive shaft,

the restricting member of the channel is in the guide, and

the restricting member of the guide has an internal diameter equal to or greater than the maximum outer diameter of the drive shaft and an internal diameter smaller than an outer diameter of the proximal end of the rotative force transmitting section.

16. The insertion apparatus according to claim 10, further comprising a rotation unit which is able to be attached to and detached from the external side of the insertion body, and which is rotatable around the central axis.

17. A rotation unit which is able to be attached to an external side of the rotating body of the insertion body according to claim 1, and is rotatable according to rotation of the rotating body.

18. The rotation unit according to claim 17, wherein the rotation unit is movable along the central axis with respect to the base between a position which is separated from the guide and in which a rotative force is not able to be transmitted from the rotative force transmitting section to the rotation unit, and a position which covers the guide and in which a rotative force from the rotative force transmitting section is able to be transmitted.

19. A rotative force transmission unit which is able to be inserted to and removed from the channel of the insertion body according to claim 1.