Endoscope suitable to body cavity

• US 20050090709A1
• Filed: 08/09/2004
• Published: 04/28/2005
• Est. Priority Date: 09/23/2003
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Corporation
• Inventors: Shimonaka, Hideki, Onuki, Yoshio, Kawashima, Koichi, Okada, Yuta
• Granted Patent: US 7,662,089 B2
• Time in Patent Office: Days
• US Class Current: 600/104
• CPC Class Codes: A61B 1/0005 combining images e.g. side-by-side, superimposed or tiled
• CPC Class Codes: A61B 1/00087 Tools A61B17/00234 takes precedence
• CPC Class Codes: A61B 1/00089 Hoods
• CPC Class Codes: A61B 1/00135 Oversleeves mounted on the endoscope prior to insertion
• CPC Class Codes: A61B 1/018 for receiving instruments
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/0482 Needle or suture guides guides for drills, pins or wire A61B17/17; for puncturing needles A61B17/3403
• CPC Class Codes: A61B 17/0487 Suture clamps, clips or locks, e.g. for replacing suture knots; Instruments for applying or removing suture clamps, clips or locks suture anchors A61B17/0401; wound clamps or clips A61B17/08; ligaturing clamps or clips A61B17/122
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 2017/0417 T-fasteners
• CPC Class Codes: A61B 2017/0458 Longitudinal through hole, e.g. suture blocked by a distal suture knot
• CPC Class Codes: A61B 2017/0464 for soft tissue
• CPC Class Codes: A61B 2017/047 having at least one proximally pointing needle located at the distal end of the instrument, e.g. for suturing trocar puncture wounds starting from inside the body J-shaped suture needles A61B2017/0608
• CPC Class Codes: A61B 2017/0488 Instruments for applying suture clamps, clips or locks for applying suture anchors A61B2017/0409; for applying wound clamps A61B17/10; for applying ligaturing clamps or clips A61B17/128
• CPC Class Codes: A61B 2017/0496 for tensioning sutures
• CPC Class Codes: A61B 2017/06052 Needle-suture combinations in which a suture is extending inside a hollow tubular needle, e.g. over the entire length of the needle hollow suture needles A61B2017/061
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/2906 Multiple forceps
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/4416 : related to combined acquisition of different diagnostic modalities, e.g. combination of ultrasound and X-ray acquisitions

Abstract

An endoscope for treatment suitable to the treatment in a body cavity comprises an elongated soft observing optical unit having at least an observing optical system; and a unit inserting tool having a unit inserting channel in which the observing optical unit is inserted and a treatment tool inserting channel in which a treatment tool is inserted. The unit inserting channel of the unit inserting tool has a branching portion at which the unit inserting channel is branched into a first inserting channel and a second inserting channel. An observing window which is arranged at the end opening of the first inserting channel is provided in a surface at the distal-end and an observing window which is arranged at the end opening of the second inserting channel is provided in a surface at the halfway portion. The unit inserting tool comprises an optical unit guiding port for guiding the observing optical unit and at least one treatment tool lead-in port in which a treatment tool is inserted at the proximal end portion and a treatment tool lead-out port which is communicated with the treatment tool inserting channel that extends from the treatment tool lead-in port at least in one of the surface at the distal-end and the surface at the halfway portion.

Claims

1. An endoscope for treatment suitable for treatment in a body cavity, comprising:

an elongate flexible observing optical unit having at least an observing optical system; and

a unit inserting tool having a unit inserting channel in which the observing optical unit is inserted and a treatment tool inserting channel in which a treatment tool is inserted,

wherein the unit inserting channel of the unit inserting tool has a branching portion at which the unit inserting channel is branched into a first inserting channel and a second inserting channel, an observing window located in an opening at the end of the first inserting channel is provided at a surface of the distal end portion of the unit inserting channel, and an observing window located in an opening at the end of the second inserting channel is provided at a surface at a halfway portion of the unit inserting channel, and

wherein the unit inserting tool comprises an optical unit lead-in port to lead in the observing-optical unit and at least one treatment tool lead-in port in which the treatment tool is inserted at the proximal end portion thereof, and

a treatment tool lead-out port communicated with the treatment tool inserting channel extended from the treatment tool lead-in port at at least one of the surface of the distal end portion of the unit inserting channel and the surface at the halfway portion of the unit inserting channel.

2. An endoscope for treatment according to claim 1, further comprising:

a bending mechanism portion which is changed to a straight state or a bending state by the operation on the hand side at the distal end portion side of the observing optical unit.

3. An endoscope for treatment according to claim 1,

wherein a bending proclivity portion is arranged at the distal end portion of the observing optical unit.

4. An endoscope for treatment according to claim 1, wherein a channel switching mechanism for selecting the inserting direction of the observing optical unit which is inserted in the unit inserting channel is arranged at the branching portion which branches the unit inserting channel, in which the observing optical unit is inserted, into an inserting channel in the direction of the observing window at the distal end portion and an inserting channel in the direction of the observing window at the halfway portion.

5. An endoscope for treatment tool according to claim 4, wherein the channel switching mechanism comprises:

a rotating plate which is rotatably arranged;

a biasing member which biases the rotating plate so as to cover an opening into a first unit inserting channel; and

a drawing operating wire which moves the rotating plate by the drawing operation against biasing force of the biasing member.

6. An endoscope for treatment tool according to claim 1, wherein the unit inserting tool has a bending portion which is independently bent by the hand side operation at least either between the distal end portion and the halfway portion or on the rear side of the halfway portion.

7. An endoscope for treatment tool according to claim 1, wherein, when the unit inserting tool is in the straight state, at least either one of the optical axis of the observing widow provided at the surface of the distal end portion and the optical axis of the observing window provided at the surface at the halfway portion is in parallel with the longitudinal axial direction of the unit inserting tool.

8. An endoscope for treatment having a flexible inserting portion, comprising:

a treatment tool inserting channel in which a treatment tool is inserted provided in the inserting portion;

a distal end portion of the inserting portion forming, on one surface thereof, an observing optical system having an illuminating optical system and an image pick-up device;

a halfway portion of the inserting portion forming, on one surface thereof, an observing optical system having an illuminating optical system and an image pick-up device;

a treatment tool lead-out port provided at at least one of the surface of the distal end portion and the surface of the halfway portion and communicated with the treatment tool inserting channel; and

a treatment tool lead-in port provided at an operation portion arranged at the proximal end of the inserting portion and communicated with the treatment tool inserting channel.

9. An endoscope for treatment tool according to claim 8, wherein the inserting portion has a bending portion which is independently bent by the hand side operation at least either between the distal end portion and the halfway portion or on the rear side of the halfway portion.

10. An endoscope for treatment tool according to claim 9, wherein, when the inserting portion is in the straight state, at least either one of the optical axes of the illuminating optical system and the observing optical system provided at the surface of the distal end portion and the optical axes of the illuminating optical system and the observing optical system provided at the surface at the halfway portion is in parallel with the longitudinal axial direction of the inserting portion.

11. An endoscope apparatus for treatment, comprising:

an endoscope for treatment having an observing optical system provided with image pick-up devices provided at a surface of the distal end portion of an inserting portion and at a surface at the halfway portion of the inserting portion;

a video processor for processing electric signals photoelectrically converted by the image pick-up devices provided at the distal end portion and at the halfway portion into video signals;

a monitor which receives the video signals processed by the video processor and displays observation images; and

a change-over device which transmits the electric signals photoelectrically converted by the image pick-up devices provided at the distal end portion and at the halfway portion to the video processor to display the observation images on a screen of the monitor.

12. An endoscope apparatus for treatment according to claim 11, wherein an operating portion of the endoscope has change-over means which switches and displays, on the screen of the monitor, the observation image which is captured by the image pick-up device at the distal end portion or the observation image which is captured by the image pick-up device at the halfway portion.

13. An endoscope apparatus for treatment, comprising:

an endoscope for treatment having an observing optical system provided with image pick-up devices provided at a surface of the distal end portion of an inserting portion and at a surface at a halfway portion of the inserting portion;

a first video processor for processing an electric signal photoelectrically converted by the image pick-up device provided at the distal end portion into a video signal;

a second video processor for processing an electric signal photoelectrically converted by the image pick-up device provided at the halfway portion into a video signal;

a first monitor which receives the video signal processed by the first video processor and displays an observation image; and

a second monitor which receives the video signal processed by the second video processor and displays an observation image.

14. An endoscope for treatment having a flexible inserting portion, comprising:

a treatment tool inserting channel in which a treatment tool is inserted provided in the inserting portion;

a distal end portion of the inserting portion forming, on one surface thereof, an observing optical system having an illuminating optical system and an image pick-up device;

a halfway portion of the inserting portion having an ultrasonic observing portion;

a treatment tool lead-out port provided at at least one of the surface of the distal end portion and the surface of the halfway portion and communicated with the treatment tool inserting channel; and

a treatment tool lead-in port provided at an operating portion arranged at the proximal end of the inserting portion and communicated with the treatment tool inserting channel.

15. An endoscope for treatment according to claim 14, wherein the inserting portion has a bending portion which is independently bent by the hand side operation at least either between the distal end portion and the halfway portion or on the rear side of the halfway portion.

16. A distal-end hood provided to an insertion portion of an endoscope, comprising:

a hood guide which is elongate in the longitudinal axial direction of the inserting portion of the endoscope;

a side opening which is formed at a halfway portion in the longitudinal direction and is perpendicular to the longitudinal axial direction communicated;

a wire guiding tube arranged to the side peripheral surface of the inserting portion; and

a hood drawing wire which is inserted in the wire guiding tube and one end of which is fixed to the distal-end hood.

17. A distal-end hood according to claim 16, wherein a claw-shaped hook is arranged to an inner wall surface on a font end side of the side opening.

18. A distal-end hood according to claim 17, wherein an opening of a treatment tool channel inserted in the inserting portion of the endoscope is communicated with the side opening.

19. A distal-end hood according to claim 16, wherein an operating lever to which is connected the other end of the hood drawing wire for drawing and operating the hood drawing wire is arranged to the operating portion of the endoscope.

20. A distal-end hood arranged to an inserting portion of an endoscope, comprising:

a hood base having a cylinder portion fixed to the inserting portion distal end portion of the endoscope;

a hood portion which has a cylinder head slidably arranged in the cylinder portion of the hood base and has a side opening at the halfway portion in the longitudinal direction; and

an air feed tube which is arranged to the side peripheral surface of the inserting portion, the distal end portion of which is communicated with the cylinder portion and the proximal end portion of which is connected to inner pressure operating means.

21. A distal-end hood according to claim 20, wherein a claw-shaped hook is arranged to an inner wall surface on a distal end side of the side opening.

22. A distal-end hood according to claim 21, wherein an opening of a treatment tool channel inserted in the inserting portion of the endoscope is communicated with the side opening.

23. A distal-end hood according to claim 20, wherein, in the arrangement in which the inner pressure operating means connected to the air feed tube is a pump, an electromagnetic valve is arranged at a halfway portion of the air feed tube and an operating lever for instructing the closing and opening operation of the electromagnetic valve is arranged to the operating portion of the endoscope.