Medical retrieval systems, devices, and related methods
AssigneeBoston Scientific Scimed, Inc.
InventorsRichard Crawford, Enda Connaughton, Méabh Holden
Life of this patent
Estimating the term…
Abstract
In one example, a retrieval device may include a flexible loop; a mesh coupled to the loop, the mesh having an opening at least partially circumscribed by the loop; a sheath extending from a proximal end to a distal end; a cord extending through and/or around the mesh; and a connector assembly movable from a first configuration to a second configuration. In the first configuration, the flexible loop, the mesh, and the cord may be coupled to the sheath, and in the second configuration, the flexible loop, the mesh, and the cord may be detached from the sheath.
Claims20
A retrieval device comprising:
- an expandable wire loop;
- a sheath extending from a proximal end to a distal end;
- a mesh coupled to the expandable wire loop, the mesh having an open end at least partially circumscribed by the expandable wire loop and a closed end spaced apart from the open end;
- a cord connected to the mesh, wherein the cord is not directly coupled to the expandable wire loop, wherein the cord is connected to the mesh at positions between the open end and the closed end of the mesh;
- and
- a connector assembly, wherein the connector assembly connects the sheath to the expandable wire loop, wherein the connector assembly is movable from a first configuration to a second configuration, wherein, in the first configuration, the expandable wire loop, the mesh, and the cord are coupled to the sheath, and in the second configuration, the expandable wire loop, the mesh, and the cord are detached from the sheath and the cord remains coupled to the mesh.
A retrieval device comprising:
- an expandable wire loop;
- a sheath extending from a proximal end to a distal end;
- a connector assembly, wherein the connector assembly connects the sheath to the expandable wire loop;
- a mesh coupled to the expandable wire loop, the mesh having an open end at least partially defined by the expandable wire loop and a closed end spaced apart from the open end;
- a cord connected to the mesh, wherein the cord is not directly coupled to the expandable wire loop, and wherein the cord is connected to the mesh at positions between the open end and the closed end of the mesh,
- wherein upon application of a pulling force on the cord, the cord is configured to constrict at least a portion of the mesh;
- and
- a drive wire coupled to the expandable wire loop, wherein actuation of the drive wire is configured to move the expandable wire loop relative to the sheath.
A method of retrieving an object from a body comprising:
- inserting a medical device with a working channel into the body;
- extending a sheath, an expandable wire loop, a mesh coupled to the sheath, and a cord through the working channel and distally of the medical device, wherein the sheath is coupled to the expandable wire loop with a connector assembly, wherein the mesh includes an open end at least partially defined by the expandable wire loop and a closed end spaced apart from the open end, and wherein the cord is connected to the mesh at positions between the open end and the closed end of the mesh;
- placing the mesh around the object;
- constricting at least a portion of the mesh around the object;
- and
- decoupling the expandable wire loop, the mesh, and the object from the sheath.
Dependencies are inferred from the claim text.