Patent ID: 9615727
Date: 2017-04-11
CPC Classifications: A61B,A61M

Claim:
1. An insertion apparatus, comprising: an insertion portion that is inserted into a subject; an action portion that is provided at the insertion portion; moving members that are provided to move in a direction in which the insertion portion is inserted, in an inside of the insertion portion, to cause the action portion to act; an operation member that is for operating the action portion by an operator; a guide member that has inner circumferential faces configured by wall surfaces provided along a direction in which the moving member moves; a crank member that has a reciprocating portion that moves forward and rearward in the direction in which the insertion portion is inserted, with an operation of the operation member; a pair of link members that open and close with a pin provided at the reciprocating portion of the crank member as a center, with movement of the crank member; and cam members that are provided in an inside of the guide member, and respectively connected to one ends of the link members to be rotated therewith, the cam members including a pair of eccentric cams that rotate to a second rotation position where the cam members simultaneously press the moving members that penetrate through the inside of the guide member with a pressing force toward the wall surfaces of the guide member in a perpendicular direction orthogonal to the direction in which the insertion portion is inserted, and a first rotation position where the cam members are separated from the moving members, by either one of opening and closing of the link members; wherein the pair of link members cross each other, and the pin is fitted into a crossing site in long holes that are formed respectively along axial directions of the link members to penetrate through the respective long holes, and the link members open and close by forward and rearward movement in the direction in which the insertion portion is inserted, of the crossing site, by the pin in the long holes moving forward and rearward in the direction in which the insertion portion is inserted, with the reciprocating portion of the crank member moving forward and rearward in the direction in which the insertion portion is inserted.