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US 11,109,939 B2Granted
Intravascular devices with radiopaque body markers
AssigneeDePuy Synthes Products, Inc.
InventorJuan Lorenzo
Life of this patent
Estimating the term…
Abstract
An intravascular treatment device is presented having an expandable frame made up of circular struts, straight struts, and bent struts forming a frame with circumference that varies over the length of the frame. Radiopaque markers can be positioned on the bent struts to indicate outer circumferences of the frame along the length of the frame. The device can be a stent or a clot retriever. If the device is a clot retriever, the proximal end of the expandable frame can be attached to a guide wire and the distal end of the expandable frame can be free to slide over the guide wire when the frame moves from a collapsed state to an expanded state and vice versa.
Claims17
An intravascular treatment device comprising:
- an elongated guide;
- and
- an expandable framework movable from a collapsed configuration sized to traverse a lumen of a catheter to an expanded configuration sized to extend within a lumen of a blood vessel, the expandable framework comprising:
- a plurality of ring struts, each ring strut encircling the elongated guide, and each ring strut movable from a constricted position around the elongated guide when the expandable framework is in the collapsed configuration to a radially expanded position around the elongated guide when the expandable framework is in the expanded configuration;
- a plurality of central struts, each central strut joining two adjacent ring struts of the plurality of ring struts such that each ring strut is joined by one or more central struts of the plurality of central struts to only a first adjacent ring strut, each central strut comprising a shape when the expandable framework is in the collapsed configuration that is essentially the same as a shape of the central strut when the expandable framework is in the expanded configuration;
- and
- a plurality of bent struts, each bent strut joining two adjacent ring struts of the plurality of ring struts such that each ring strut is joined by one or more bent struts of the plurality of bent struts to only a second adjacent ring strut opposite the first adjacent ring strut, each of the plurality of bent struts movable from a longitudinally elongated shape when the expandable framework is in the collapsed configuration to a radially expanded shape when the expandable framework is in the expanded configuration, wherein the expandable framework further comprises a proximal end and a distal end, wherein the proximal end is affixed to the elongated guide, and wherein the distal end is slidably movable over the elongated guide.
4 more elements
An expandable clot capture device movable from a delivery configuration sized to traverse a lumen of a catheter to a deployed configuration sized to extend within a lumen of a blood vessel, the device comprising:
- a plurality of ring struts, each ring strut movable from a constricted circumference when the clot capture device is in the delivery configuration to an expanded circumference when the clot capture device is in the deployed configuration;
- a plurality of central struts, each central strut comprising a shape when the clot capture device is in the delivery configuration that is essentially the same as a shape of the central strut when the clot capture device is in the deployed configuration;
- a plurality of bent struts, each of the plurality of bent struts movable from a longitudinally elongated shape when the device is in the delivery configuration to a radially expanded shape when the clot capture device is in the deployed configuration;
- an expandable frame comprising the plurality of ring struts, the plurality of central struts, and the plurality of bent struts;
- and
- a guide wire extending through a central axis of the expandable frame and affixed to the expandable frame at a singular node approximate a proximal end of the expandable frame,
- wherein at least a portion of the plurality of ring struts are each joined to a first adjacent ring strut and a second adjacent ring strut opposite the first adjacent ring strut,
- wherein each of the at least a portion of the plurality of ring struts are joined to the associated first adjacent ring strut by one or more central struts of the plurality of central struts,
- wherein each of the at least a portion of the plurality of ring struts are joined to the second adjacent ring strut by a group of one or more bent struts of the plurality of bent struts,
- wherein when the clot capture device is in the deployed configuration, each group of the one or more bent struts defines a respective circumference, and
- wherein when the clot capture device is in the deployed configuration the expanded circumference of each ring strut measures smaller than each respective circumference of each group of the one or more bent struts.
8 more elements
A method comprising:
- positioning an expandable frame to encircle a guide wire;
- attaching the frame to the guide wire at an attachment site approximate a proximal end of the frame;
- collapsing the frame around the guide wire such that the frame is in a delivery configuration sized to traverse a lumen of a catheter;
- expanding the frame from the delivery configuration to a deployed configuration;
- maintaining the attachment of the frame to the guide wire at the attachment site as the frame expands from the delivery configuration to the deployed configuration;
- sliding at least a portion of the frame over the guide wire as the frame expands from the delivery configuration to the deployed configuration;
- and
- shaping the frame in the deployed configuration, to comprise a length measurable from the distal end to the proximal end, and a variable circumference that transitions from an first circumference to a second circumference measuring smaller than half the first circumference, from the second circumference to a third circumference measuring larger than the second circumference and up to the first circumference, and from the third circumference again to the second circumference along at least a portion of the length of the frame.
5 more elements
Dependencies are inferred from the claim text.