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US 11,376,009 B2Granted
Shape memory polymer foams for endovascular therapies
AssigneeLawrence Livermore National Security, LLC
InventorsThomas S. Wilson, Duncan J. Maitland
Life of this patent
Estimating the term…
Abstract
A system for occluding a physical anomaly. One embodiment comprises a shape memory material body wherein the shape memory material body fits within the physical anomaly occluding the physical anomaly. The shape memory material body has a primary shape for occluding the physical anomaly and a secondary shape for being positioned in the physical anomaly.
Claims20
A system comprising:
- an open cell, thermoset, shape memory polymer (SMP) foam including cells;
- and
- a retention member configured to retain the SMP foam within an anatomical void;
- wherein the SMP foam has a primary form and a compressed secondary form;
- wherein (a)(i) the SMP foam substantially surrounds the retention member in a plane that is orthogonal to a central axis of the retention member;
- (a)(ii) the SMP foam has hysteresis in a modulus temperature curve of the SMP foam;
- (a)(iii) the hysteresis is based on exposure of the SMP foam to an aqueous environment;
- and (a)(iv) the SMP foam has an expansion ratio between a volume of the SMP foam in the primary form and a volume of the SMP foam in the compressed secondary form that is between 2 and 200.
5 more elements
A system comprising:
- an open cell, thermoset, shape memory polymer (SMP) foam including cells;
- and
- a retention member configured to retain the SMP foam within an anatomical void;
- wherein the SMP foam has a primary form and a compressed secondary form;
- wherein (a)(i) the SMP foam substantially surrounds the retention member in a plane that is orthogonal to a central axis of the retention member;
- (a)(ii) the SMP foam has hysteresis in a modulus temperature curve of the SMP foam;
- (a)(iii) the hysteresis is based on exposure of the SMP foam to a solvent;
- and (a)(iv) the SMP foam has an expansion ratio between a volume of the SMP foam in the primary form and a volume of the SMP foam in the compressed secondary form that is between 2 and 200.
5 more elements
Dependencies are inferred from the claim text.