JP2005270392A5 - - Google Patents

Claims (10)

In an endoscope apparatus including an optical adapter that is detachably attached to a distal end of an insertion portion that is inserted into a lumen of an endoscopic target, the optical adapter is provided in an adapter main body so as to be radially displaceable, and the insertion A locking claw that can press and hold the outer peripheral surface of the portion from the outside in the radial direction and a screw that can be rotated by the adapter main body, and the locking claw is pressed inward in the radial direction by axial displacement according to the rotation operation. An endoscope apparatus comprising: a desorption operation ring having a pressing taper portion.
A plate-like piece that can be elastically bent and deformed in the radial direction is extended along the axial direction in the adapter main body, and the locking claw is provided at the tip of the plate-like piece. The endoscope apparatus according to 1.
Provided between the adapter main body and the detachable operation ring is a fixing threaded portion that can be screwed to the position where the locking claw is pressed against the outer peripheral surface of the insertion portion by the pressing taper portion. A stopper portion for restricting the relative displacement in the axial direction of the attachment / detachment operation ring and the adapter main body when the fixing screw engagement portion is disengaged, and the insertion portion is attached to and detached from the outer periphery of the insertion portion. Engagement in which at least a part of the locking claw enters when the relative position of the operation ring is in the non-screwing stroke range between the position where the fixing screwing part is unscrewed and the position where the stopper part acts A groove is formed, and at the inner periphery of the attachment / detachment operation ring, when the relative position of the attachment / detachment operation ring with respect to the adapter body is in the non-threading stroke range, at least a part of the locking claw is in the engagement groove. The endoscope apparatus according to claim 2, wherein a displacement restricting surface for restricting a radially outward displacement of the locking claw is formed so as to be positioned at the position.
The stopper portion includes one screw element of the adapter main body and the attachment / detachment operation ring constituting the fixing screwing portion, and the other screw on the member on the same side as the other screw element constituting the fixing screwing portion. The endoscope apparatus according to claim 3, comprising: a third screw element provided at a position spaced apart from the element in the axial direction.
When the one screw element and the third screw element are screwed to the inner periphery of the detachable operation ring, or one screw element is separated from the other screw element rather than the third screw element. The endoscope apparatus according to claim 4, wherein an escape annular groove that opens the locking claw radially outward when in the position is formed.
Positioning locking means for restricting relative rotation between the adapter main body and the insertion portion is provided, and when the screwing of the fixing screwing portion is loosened and the attachment / detachment operation ring is displaced in the axial direction, the positioning member is fixed. The endoscope apparatus according to any one of claims 3 to 5, wherein the restriction by the stopping means is released.
The endoscope apparatus according to any one of claims 1 to 6, wherein the fitting portion of the adapter main body with respect to the insertion portion includes a plurality of constituent members, and the attachment / detachment operation ring is screwed to the frontmost end constituent member of the adapter main body. An endoscope apparatus characterized by being combined.
  An endoscope apparatus including an optical adapter that is detachably attached to a distal end of an insertion portion that is inserted into a lumen of an endoscopic object, wherein the optical adapter includes a slit formed on a rear side of the adapter body, an adapter An endoscope apparatus comprising: a locking portion which is provided on the main body so as to be radially displaceable and capable of pressing and holding the outer peripheral surface of the insertion portion from the outside in the radial direction.
  In an optical adapter of an endoscope apparatus that is detachably attached to a distal end of an insertion portion that is inserted into a lumen of an endoscopic object, the adapter main body is provided so as to be radially displaceable, and an outer peripheral surface of the insertion portion is radially disposed Detachment having a locking claw that can be pressed and clamped from the outside, and a pressing taper portion that is screwed into the adapter main body so as to be able to rotate and presses the locking claw radially inward by axial displacement in accordance with the rotation operation. An optical adapter for an endoscope apparatus, comprising: an operation ring.
  In an optical adapter of an endoscope apparatus that is detachably attached to the distal end of an insertion portion that is inserted into a lumen of an endoscopic object, a slit formed on the rear side of the adapter body and a radial displacement to the adapter body An optical adapter for an endoscope apparatus, comprising: an engaging portion that is provided and capable of pressing and holding the outer peripheral surface of the insertion portion from the radially outer side.