CONTINUOUS EMBOLIC COIL AND METHODS AND DEVICES FOR DELIVERY OF THE SAME
An occlusion system provides a trimmable continuous embolic coil that is “cut to length” at the end of its deployment into the aneurysmal space. A delivery device provides the “cut to length” feature for the continuous embolic coil. A method of filling an aneurysmal space with a continuous embolic coil is also disclosed.
1 . A method of filling an aneurysmal space with continuous embolic coil, the method comprising
loading a distal end of a continuous embolic coil into a delivery device;
advancing the continuous coil into and through the delivery device from a coil dispenser;
deploying a portion of the continuous embolic coil to a desired length into the aneurysmal space through the delivery device;
determining whether a coil pack formed by the deployed portion of the continuous embolic coil is sufficient to partially or completely fill the aneurysmal space;
cutting the continuous embolic coil at the desired length such that the deployed portion of the continuous coil is severed from the coil dispenser and a proximal portion of the continuous coil remains on the coil dispenser.
2 . The method of claim 1 further comprising advancing a proximal portion of the deployed portion of the continuous embolic coil remaining in the delivery device into the aneurysmal space to join or complete a coil pack.
3 . The method of claim 1 further comprising deploying a second length of the continuous embolic coil into the aneurysmal space without reloading the delivery device with a second continuous embolic coil.
4 . The method of claim 1 further comprising
moving the delivery device to a second aneurysmal space; and
deploying the continuous embolic coil at the second aneurysmal space.
5 . The method of claim 1 , wherein the aneurysmal space is a void defined between an endograft device and a patient's aorta or the space is an arterial-venous malformation (AVM).
6 . The method of claim 1 , wherein the delivery device includes a proximal end located outside of the patient's body and a distal end positioned within the aneurysmal space; and the cutting operation is performed at the proximal end of the delivery device.
7 . The method of claim 1 , wherein the delivery device includes a proximal end located outside of the patient's body and a distal end positioned within the aneurysmal space; and the cutting operation is performed at the distal end of the delivery device.
8 . The method of claim 1 , wherein the loading operation comprises manually advancing the coil from the coil dispenser to the delivery device.
9 . The method of claim 1 , wherein the continuous embolic coil is a shape memory polymer coil or a radiopaque polymer coil.
10 . A method of occluding a target occlusion site with a continuous embolic coil, the method comprising
advancing a distal end of a continuous embolic coil from a coil dispenser into and through a delivery device;
deploying a portion of the continuous embolic coil into the target occlusion site through the delivery device;
visualizing the coil pack to determine whether a coil pack formed by the continuous embolic coil is sufficient to partially or completely fill the occlusion site;
cutting the continuous embolic coil such that the deployed portion of the continuous coil is severed and a proximal portion remains on the coil dispenser.
11 . The method of claim 10 further comprising advancing a proximal portion of the deployed portion of the continuous embolic coil remaining in the delivery device into the target occlusion site to join or complete a coil pack.
12 . The method of claim 10 further comprising deploying a second length of the continuous embolic coil into the target occlusion site without reloading the delivery device with a second continuous embolic coil.
13 . The method of claim 10 further comprising moving the delivery device to a second target occlusion site; and
deploying the continuous embolic coil at the second target occlusion site.
14 . The method of claim 10 , wherein the target occlusion site is an aneurysmal space that is a void defined between an endograft device and a patient's aorta or the space is an arterial-venous malformation (AVM).
15 . The method of claim 14 , wherein the delivery device includes a proximal end located outside of the patient's body and a distal end positioned within the aneurysmal space;
and the cutting operation is performed at the proximal end of the delivery device.
16 . The method of claim 14 , wherein the delivery device includes a proximal end located outside of the patient's body and a distal end positioned within the aneurysmal space; and the cutting operation is performed at the distal end of the delivery device.
17 . The method of claim 10 , wherein the advancing operation comprises manually advancing the coil from the coil dispenser or tubular holding body into the delivery device.
18 . The method of claim 10 , wherein the continuous embolic coil is a shape memory polymer coil or a radiopaque polymer coil.
19 . A system for filling an aneurysmal space, the system comprising a continuous radiopaque embolic coil configured to be cut to length and when deployed into the aneurysmal space, the coil transitions from a storage shape to a deployed shape to form, join or complete a coil pack.
20 . The system of claim 19 further comprising a coil dispenser configured to receive and maintain the coil in the storage shape and deploy the continuous embolic coil into the aneurysmal space.