Patent ID: 8764630

Claim:
A surgical apparatus comprising: a spatial structure deformable to be shrunken or enlarged, in which it is possible to support tissues inside of a body cavity and to be placed in a body, when it is disposed in the body cavity in the enlarged state, wherein the spatial structure is arranged in a channel of an insertion portion which is capable of being inserted into the body cavity in the shrunken state; the spatial structure comprises a first plurality of tubular members and a second plurality of tubular members, with the tubular members being movable along a longitudinal axis of the channel, and a wire which is inserted into at least several of the plurality of tubular members, are capable of moving with respect to the plurality of tubular members and extended so as to freely advance or retract from a distal end portion to a proximal end portion of the channel; when the spatial structure is shrunken, the plurality of tubular members are stored in the channel along the longitudinal axis thereof; and when the wire is projected from the distal end of the insertion portion and the spatial structure is enlarged at a position projected from the distal end of the insertion portion, the spatial structure includes a space that is defined by the first plurality of tubular members and the second plurality of tubular members, the first plurality of tubular members protrude from an opening of the distal end of the insertion portion, angled with respect to the longitudinal axis of the channel, and the second plurality of tubular members are connected with distal ends of the first plurality of tubular members via the wire and the second tubular members form a triangle that defines an opening which faces the opening of the distal end of the insertion portion.