Devices and methods for treating vascular malformations
First Claim
Patent Images
1. A method of treating a cerebral aneurysm, comprising the steps of:
- providing an expandable structure movable from a collapsed shape to an expanded shape;
introducing the expandable structure into a blood vessel of a patient;
advancing the expandable structure through the patient'"'"'s vasculature to a cerebral aneurysm while the expandable structure is in the collapsed position;
moving the expandable structure into the cerebral aneurysm;
expanding the expandable structure to the expanded position in the cerebral aneurysm;
shrinking the wall of the aneurysm; and
leaving the expandable structure in the aneurysm after the shrinking step.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for treating a vascular malformation has an expandable device and a heating device for heating and shrinking the malformation. The expandable device may have deformable elements which plastically deform in the expanded position. The balloon may be self-expanding, balloon expanded or expanded with an actuating rod. A fluid, such as saline, may be introduced during heating when using RF heating. A sealant may also be introduced into the expandable device to further seal the aneurysm.
283 Citations
73 Claims
-
1. A method of treating a cerebral aneurysm, comprising the steps of:
-
providing an expandable structure movable from a collapsed shape to an expanded shape;
introducing the expandable structure into a blood vessel of a patient;
advancing the expandable structure through the patient'"'"'s vasculature to a cerebral aneurysm while the expandable structure is in the collapsed position;
moving the expandable structure into the cerebral aneurysm;
expanding the expandable structure to the expanded position in the cerebral aneurysm;
shrinking the wall of the aneurysm; and
leaving the expandable structure in the aneurysm after the shrinking step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29)
-
-
13. A method of isolating a cerebral aneurysm from the parental vessel, comprising the steps of:
-
providing a device movable from a collapsed position to an expanded position, the device having a proximal portion when in the expanded position;
introducing the device into the aneurysm in the collapsed position;
expanding the device to the expanded position after the introducing step;
shrinking the dome of the aneurysm so that that the proximal portion of the expandable device extends around the neck of the aneurysm.
-
-
16. A system for treating a cerebral aneurysm, comprising:
-
a shaft having a length and flexibility sufficient to extend into a patient'"'"'s cerebral vasculature;
an expandable device movable from a collapsed shape to an expanded shape, the expandable device being removably coupled to the shaft;
means for shrinking the aneurysmal wall toward the expandable device when the expandable device is contained within the aneurysm.
-
-
24. A method of treating a cerebral aneurysm, comprising the steps of:
-
providing an expandable structure movable from a collapsed shape to an expanded shape, the expandable structure having a deforming portion which is displaced beyond the yield strength when moving from the collapsed position to the expanded position;
introducing the expandable structure into a blood vessel of a patient;
advancing the expandable structure through the patient'"'"'s vasculature to a cerebral aneurysm while the expandable structure is in the collapsed position;
moving the expandable structure into the cerebral aneurysm;
expanding the expandable structure to the expanded position in the cerebral aneurysm; and
leaving the expandable structure in the aneurysm after the expanding step.
-
-
30. A device for introduction into a cerebral aneurysm, comprising:
-
a first end having a first hub;
a second end having a second hub; and
an expandable structure extending between the first and second ends, the expandable structure being movable from a collapsed shape to an expanded shape, the expandable structure having at least two filaments extending between the first and second hubs, the first and second hubs moving toward one another when the expandable structure moves from the collapsed position to the expanded position. - View Dependent Claims (31, 32, 33, 35, 36, 37, 38, 39, 40, 41, 42)
-
-
34. A method of treating an aneurysm in the cerebral vasculature of a patient, comprising the steps of:
-
providing a device having first and second ends and an expandable structure extending between the first and second ends, the expandable structure being movable from a collapsed shape to an expanded shape, the device also having a locking mechanism for locking the expandable structure in the expanded position;
introducing the device into the patient'"'"'s vascular system with the expandable structure in the collapsed position;
advancing the device through the patient'"'"'s vascular system with the expandable structure in the collapsed condition;
positioning the device into an aneurysm in the patient'"'"'s cerebral vasculature;
expanding the expandable structure of the device after the positioning step; and
locking the locking mechanism to hold the expandable structure in the expanded position.
-
-
43. A method of treating a cerebral aneurysm, comprising the steps of:
-
providing a catheter having a cover;
passing the catheter through a patient'"'"'s cerebral vasculature to an aneurysm;
positioning the cover over the neck of the aneurysm; and
shrinking the aneurysmal wall. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 57, 58, 59, 60)
-
-
56. A method of treating an aneurysm, comprising the steps of:
-
providing an expandable device movable from a collapsed position to an expanded position, the expandable device having a first section and a second section;
passing the expandable device through a patient'"'"'s cerebral vasculature;
introducing the expandable device into an aneurysm in the patient'"'"'s cerebral vasculature;
expanding the expandable device to the expanded position with the first section positioned adjacent to the neck of the aneurysm and the second section positioned further into the aneurysm;
coupling the expandable device to a source of electric power;
delivering the electric power to the expandable device so that the aneurysm is heated thereby shrinking the aneurysm, the heat being generated by the second section and not the first section so that the neck of the aneurysm is protected.
-
-
61. A method for treating an aneurysm and a parent vessel, comprising the steps of:
-
providing a catheter and a coil, the catheter having a lumen and the coil being positioned in the lumen, the coil being movable within the lumen to extend and retract the coil from the distal end of the catheter;
introducing the catheter into a patient'"'"'s vascular system;
advancing the catheter to an aneurysm;
filling the aneurysm with a heated fluid;
positioning the coil in the parent artery so that windings are positioned adjacent the neck of the aneurysm to impede flow between the aneurysm and the parent artery. - View Dependent Claims (62, 63, 64, 65)
-
-
66. A device for regulating fluid flow between an aneurysm and a parent vessel, comprising:
-
a catheter including a lumen having a distal end; and
a coil positioned within the lumen, the coil being movable within the lumen to extend or retract the coil from the distal end of the lumen, the coil being extending from the lumen to form a coil. - View Dependent Claims (67, 68, 70, 71, 72, 73)
-
-
69. A device for heating tissue, comprising:
-
a shaft having a lumen;
a tip having a chamber therein and a plurality of holes leading to the chamber, the chamber being fluidly coupled to the lumen so that a fluid delivered through the lumen passes into the chamber and out the plurality of holes; and
an RF electrode configured to deliver RF energy from an RF generator, the RF electrode positioned in the chamber.
-
Specification