Spherical helix embolic coils for the treatment of cerebral aneurysms
AssigneeUniversity of Miami
InventorsChandramouli Sadasivan, Baruch B Lieber
Life of this patent
Estimating the term…
Abstract
A method and device for occluding an aneurysm. The device may include a wire having a shape memory. The wire may define a coil. The wire may further define a first substantially spherical helix and a second substantially spherical helix nested within the first substantially spherical helix. A catheter may be included, being releaseably engageable to the wire, the wire being at least partially disposed within the catheter.
Claims20
An aneurysmal occlusion system comprising:
- a first wire having a shape memory defining a coil, the first wire defining a first substantially spherical helix;
- a second wire having a shape memory defining a coil, the second wire defining a second substantially spherical helix nested within the first substantially spherical helix;
- and
- a catheter releaseably engageable with the first and second wires, the first and second wires being at least partially disposable within the catheter.
(canceled)
(canceled)
(canceled)
(canceled)
(canceled)
A method of occluding an aneurysmal sac comprising:
- positioning a first wire proximate an opening defined by the aneurysmal sac;
- deploying the first wire within the aneurysmal sac, such that the wire defines a first substantially spherical helix within the aneurysmal sac;
- positioning a second wire proximate the opening;
- deploying the second wire within first wire within the aneurysmal sac, such that the second wire defines a second substantially spherical helix nested within the first substantially spherical helix.
(canceled)
A method of occluding an aneurysmal sac comprising:
- providing a first wire having a shape memory and a diameter of approximately 50 to 100 μm, the first wire defining a coil having a diameter of 100 to 500 μm;
- releaseably engaging the first wire to a catheter;
- positioning the first wire proximate an opening defined by the aneurysmal sac;
- deploying the first wire within the aneurysmal sac, such that the first wire defines a first substantially spherical helix;
- providing a second wire having a shape memory and a diameter of approximately 50 to 100 μm, the second wire defining a coil having a diameter of 100 to 500 μm;
- releaseably engaging the second wire to the catheter;
- positioning the second wire proximate an opening defined by the aneurysmal sac;
- and
- deploying the second wire within the aneurysmal sac, such that the second wire defines a second substantially spherical helix nested within the first substantially spherical helix.
Dependencies are inferred from the claim text.