Patent ID: 7122043

Claim:
A biasing device positionable within a body opening defined by a flexible sidewall, said biasing device having a first deformed configuration to facilitate insertion through a catheter and being automatically expandable toward a second configuration when released from said catheter, the biasing device comprising: at least first and second side wall engaging members operable to respectively engage and outwardly expand opposed portions of the sidewall on opposite sides of the opening during expansion of said biasing device to an operable position, wherein the first side wall engaging member is closer to the second side wall engaging member in the first configuration than in the second configuration, and said at least first and second side wall engaging members being substantially coplanar when expanding from the first configuration to the second configuration, wherein the first side wall engaging member has at least four bends, and wherein the second side wall engaging member has at least four bends; and at least one expandable and contractible joinder member connected between the said first and second sidewall engaging members, said joinder member being formed to contract to position said at least first and second sidewall engaging members proximate to one another for insertion in a catheter and to expand upon release of said biasing device from said catheter; and a shroud covering the first and second side wall engaging members and extending between the first and second side wall engaging members; wherein the first side wall engaging member comprises a first anchoring mechanism protruding in a first direction from a remainder of the first side wall engaging member, wherein the first direction is coplanar with the first and second side wall engaging members; and wherein the first anchoring mechanism comprises at least one or more hooks; and wherein the biasing device defines a substantially flat shape.