Abstract:
A device is designed to remove blockages in a lumen such as a thrombus, blood clot, or embolus. The device comprises a manipulating wire and a structure that can conduct electrical current to a lumen blockage. The electrical current is preferably in radio frequency (RF). The RF electric current in the blockage can excite the contents such as proteins of the blockage, so that cross-linking density and interfacial adsorption of the entire blockage is enhanced. The enhanced cross-linking density can result in increased fracture resistance of the blockage such that fracture of the blockage during the removal process is unlikely. The enhanced interfacial adsorption results in increased interfacial fracture resistance between the device and blockage so that the blockage can be securely captured during the removal process without using radially applied force.
Abstract:
Embodiments disclosed herein represent powder based additive manufacturing processes which provide a microstructure having improved mechanical properties. The methods may include the use of ultrasonic excitation in combination with the active control of a substrate's temperature to provide some level of control over the microstructure and hence the properties.
Abstract:
A thermal interface material provides thermal conduction or thermal dissipation across an interface, using a three-dimensional interconnected porous graphene (3D-IPG) foam structure. The 3D-IPG foam structure is constructed of three-dimensional interconnected graphene sheets formed as a plurality of monolayers, and having an flexible interconnection architecture. The flexible interconnection architectures allow the 3D-IPG to maintain a high interfacial thermal conductance by the 3D-IPG filling a gap between a heat source and a heat sink across the interface, and by capping small features up to nanoscale roughened surfaces.
Abstract:
Embodiments disclosed herein represent powder based additive manufacturing processes which provide a microstructure having improved mechanical properties. The methods may include the use of ultrasonic excitation in combination with the active control of a substrate's temperature to provide some level of control over the microstructure and hence the properties.
Abstract:
A device is designed to remove blockages in a lumen such as a thrombus, blood clot, or embolus. The device comprises a manipulating wire and a structure that can conduct electrical current to a lumen blockage. The electrical current is preferably in radio frequency (RF). The RF electric current in the blockage can excite the contents such as proteins of the blockage, so that cross-linking density and interfacial adsorption of the entire blockage is enhanced. The enhanced cross-linking density can result in increased fracture resistance of the blockage such that fracture of the blockage during the removal process is unlikely. The enhanced interfacial adsorption results in increased interfacial fracture resistance between the device and blockage so that the blockage can be securely captured during the removal process without using radially applied force.
Abstract:
A conductive thin film device includes a substrate and a thin film structure applied to the substrate. The thin film structure is applied as a first layer and forms a one-dimensional nanomaterial networked layer deposited on the substrate. A coating layer overlays the one-dimensional nanomaterial networked layer and can be made from graphene or graphene oxide. The coating layer at least partially covers the nanomaterial networked layer, thereby forming the device as a double-layer structure.
Abstract:
The claimed biocompatible device is designed to remove vessel occlusions such as a thrombus, blood clot, or embolus. The claimed devices maybe used to treat occlusions in the brain, in the vasculature, and in tissues and organs.The device is in a form of a wire or wire-like structure which can capture the occlusion with minimal contact force with the vessel wall by an application of electricity, or electrical, chemical, or microwave generated heat to enable capture of the occlusion by the device. The device, compared to conventional mechanical thrombectomy devices, captures the occlusion and reduces occlusion fragmentation without large radial force and vessel wall friction that can damage the vessel wall.