Endoscope treatment system

• US 8,491,463 B2
• Filed: 11/25/2008
• Issued: 07/23/2013
• Est. Priority Date: 11/28/2007
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: Goto, Hiroaki
• Primary Examiner(s): KASZTEJNA, MATTHEW JOHN
• Application Number:
  US12/277,508
• Publication Number:
  US 20090137867A1
• Time in Patent Office: 1,701 Days
• Field of Search: 600/127, 600/129
• US Class Current: 600/104
• 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 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2017/00336 with a protective sleeve, e.g. retractable or slidable
• CPC Class Codes: A61B 2017/0034 adapted to be inserted through a working channel of an endoscope
• CPC Class Codes: A61B 2017/00902 transparent or translucent

Abstract

An endoscope treatment system includes: an endoscope; and a treatment tool that has a sheath that is inserted in a channel of an insertion portion of the endoscope, in which projection portions that project outward from the sheath in the radial direction are provided, and engagement portions that engage the projection portions are provided near the channel of the endoscope.

Claims

1. An endoscope treatment system comprising:

an endoscope; and

a treatment tool that has a sheath configured to be inserted in a channel of an insertion portion of the endoscope;

wherein projection portions, that project outward from the sheath in a radial direction, are provided,

an engagement portion that engages the projection portions is provided near the channel of the endoscope;

the projection portions are exposed outward of the sheath by respectively passing outward of the sheath through a first hole portion, which is formed at a proximal end of the sheath, and the projection portions respectively re-enter into the sheath by passing into the sheath through a second hole portion, which is formed at a distal end of the sheath, multiple first hole portions being positioned on a same location of the sheath and spaced from each other in a circumferential direction of the sheath, and multiple second hole portions being positioned on a same location of the sheath and spaced from each other in a circumferential direction of the sheath, and

the engagement portion has a tapered portion which is formed in a tapered shape such that a diameter thereof gradually narrows to a distal end portion thereof,

slots in which the respective projection portions are capable of being protruded are formed with the tapered portion, and

an outer diameter of the tapered portion, which includes at least a part of the slots, at a distal end side thereof is smaller than an outer diameter of the projection portions when the projection portions are maximally protruded from the sheath.

2. The endoscope treatment system according to claim 1, wherein the engagement portions are slots that engage the projection portions in an inserted state.

3. The endoscope treatment system according to claim 1, wherein the projection portions and the engagement portions rotate in conjunction with the rotation operation of the insertion portion of the endoscope.

4. The endoscope treatment system according to claim 1, wherein the projection portions freely project and retract.

5. The endoscope treatment system according to claim 1, wherein the projection portions are conductive wires to which high-frequency electricity is supplied.