Retrieval devices and related methods of use
AssigneeBoston Scientific Scimed, Inc.
InventorMichael S.H. Chu
Life of this patent
Estimating the term…
Abstract
A retrieval device may have a contracted state and an expanded state. The retrieval device may include a sheath and at least three support members. Each of the support members may have a first portion with a first cross-sectional shape and a second portion with a second cross-sectional shape different from the first cross-sectional shape. A proximal end fixed of each of the support members may be coupled to the sheath, and a distal end may be movable relative to the sheath. The retrieval device may further include at least three movable members movable relative to the support members. Each movable member may extend through a lumen of one support member of the at least three support members and through a lumen of a different support member of the at least three support members.
Claims20
A retrieval device having a contracted state and an expanded state, comprising:
- a sheath;
- at least three support members each having a first portion with a first cross-sectional shape and a second portion with a second cross-sectional shape different from the first cross-sectional shape, a proximal end fixed to the sheath, and a distal end movable relative to the sheath;
- and
- at least three movable members movable relative to the support members, each movable member extending through a lumen of one support member of the at least three support members and through a lumen of a different support member of the at least three support members.
A retrieval device, comprising:
- a sheath;
- at least three support members each tapering from a first portion with a circular cross-sectional shape to a second portion with a ovular cross-sectional shape, wherein each of the support members is movable between a contracted configuration extending along a longitudinal axis of the sheath in the contracted configuration, and an expanded configuration bowing radially outward from the longitudinal axis of the sheath;
- and
- at least three movable members, each movable member forming a bridge between two different support members of the at least three support members.
A method for retrieving an object using a retrieval device including a sheath, at least three support members each having a varied cross-sectional shape along a length of the support members, a proximal end fixed to the sheath, and a distal end movable relative to the sheath, and at least three movable members movable relative to the support members, each movable member extending through a lumen of one support member of the at least three support members and through a lumen of a different support member of the at least three support members, the method comprising:
- moving the movable members distally to transition the retrieval device from a contracted state to an expanded state.
Dependencies are inferred from the claim text.