Patent ID: 11957356
Assignee: NV MEDTECH, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method of treating an intracranial aneurysm, the method comprising:
threading a first microcatheter through an intracranial blood vessel and at least partly into the intracranial aneurysm;
threading a guide wire through the intracranial blood vessel to a position outside a neck of the aneurysm while the first microcatheter is disposed within the intracranial blood vessel;
threading a second microcatheter over the guide wire and through the intracranial blood vessel to the position outside the neck of the aneurysm;
threading a device for temporarily protecting the neck of the aneurysm through the second microcatheter in a collapsed state and out of a distal end of the second microcatheter, wherein the device for temporarily protecting the neck of the aneurysm comprises one or more wires forming a collapsible frame defining a fractional frame porosity of 0.9 or greater with a cover on at least a portion thereof having pores defining a median pore size and a fractional cover porosity, wherein the median pore size is less than 10 microns, and wherein the median pore size times the fractional cover porosity is between 0.1 and 2 such that the cover is more permeable to plasma than to red blood cells and such that the cover will substantially prevent radiographic contrast agent from entering a sac of the aneurysm;
expanding the device to a deployed configuration that substantially conforms to a shape of an inside surface of the intracranial blood vessel in the vicinity of the aneurysm with the cover defining a first porosity positioned against the neck of the aneurysm;
disposing at least one coil into the aneurysm through the first microcatheter; and
removing the device from the intracranial blood vessel.