Embolism protection devices
First Claim
1. An embolism protection device comprising a biocompatible polymer, wherein the polymer has a composition that results in spontaneous expansion upon release within a patient'"'"'s vessel into a porous structure configured to filter flow through the vessel that allows the passage of blood components while blocking a substantial majority of particulates with a diameter greater than 0.2 mm, wherein the porous structure comprises a network of fibrous polymer extending through the interior of the porous structure having a configuration to expand until contact with the vessel wall around the circumference of the vessel.
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Accused Products
Abstract
Embolism protection devices can be formed with a biocompatible expandable polymer that can expand upon release within a patient'"'"'s vessel. Upon release, the structure can be configured to filter flow through the vessel. The material of the embolism protection devices can release one or more biologically active agents, such as a thrombolitic agent, including, for example, tPA. Alternatively or additionally, the embolism protection device can be connected to a tether that elutes one or more biologically active agents.
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Citations
42 Claims
- 1. An embolism protection device comprising a biocompatible polymer, wherein the polymer has a composition that results in spontaneous expansion upon release within a patient'"'"'s vessel into a porous structure configured to filter flow through the vessel that allows the passage of blood components while blocking a substantial majority of particulates with a diameter greater than 0.2 mm, wherein the porous structure comprises a network of fibrous polymer extending through the interior of the porous structure having a configuration to expand until contact with the vessel wall around the circumference of the vessel.
- 26. An embolism protection device comprising a biocompatible polymer forming a porous structure having a configuration to filter flow through a patient'"'"'s vessel and having a distribution of pore sizes determined by overall polymer density and composition or by fiber packing, that allows the passage of blood components while blocking a substantial majority of particulates with a diameter greater than 0.2 mm, wherein the porous structure has a network of fibrous polymer extending through the interior of the porous structure and mounted over or attached to a tether or guidewire, the porous structure having a configuration in a deployed configuration to contact the vessel wall around the circumference of the vessel to fill the lumen of the vessel.
- 33. An embolism protection device comprising a polymer forming a porous structure and a biologically active agent that elutes from the device when the device is in contact with flow within a patient'"'"'s vessel, the porous structure having a configuration to filter flow through the patient'"'"'s vessel and having a distribution of pore sizes determined by overall polymer density and composition or by fiber packing, that allows the passage of blood components wherein the biologically active agent comprises tPA, an anti-platelet agent, gene vectors expressing a selected protein or peptide or a combination thereof.
Specification