Embolic device delivery system
First Claim
1. An embolic device delivery system, comprising:
- a pusher having a proximal end portion and a distal end portion and a lumen;
a constriction component disposed at or near the distal end portion of the pusher within the lumen of the pusher, said constriction component defining an inner channel having a first cross-sectional extent that is sized to allow at least a portion of an embolic device to be received within the channel;
said constriction component having a proximal end portion and a distal end portion with said inner channel therebetween, said proximal end portion of the constriction component being movable relative to its said distal end portion;
said distal end portion of the constriction component is held stationary relative to the pusher, the proximal end portion of the constriction component is movable relative to the distal end portion and to the pusher, and the distal end portion of the constriction component is connected to the distal end portion of the pusher; and
whereby upon movement of the proximal end portion of the constriction component relative to its said distal end portion, the inner channel defined by the constriction component changes from the first cross-sectional extent to a second smaller cross-sectional extent wherein the constriction component secures the at least a portion of the embolic device within the inner channel.
3 Assignments
0 Petitions
Accused Products
Abstract
A vascular occlusion device deployment system for deploying an occlusion device at a preselected site within the vasculature of a patient. The deployment system includes a pusher which has a constrictor located at the distal end portion of the pusher. The constrictor has a channel which receives a portion of the occlusion device. The constrictor has a proximal end portion and a distal end portion wherein the proximal end portion can be moved relative to the distal end portion to reduce the size of the channel. When the channel size is reduced, the constrictor grasps the portion of the occlusion device located within the channel. When it is desired to deploy the coil, the constrictor is moved in the opposite direction to increase the size of the channel and release the coil'"'"'s grasp of the occlusion device.
33 Citations
26 Claims
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1. An embolic device delivery system, comprising:
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a pusher having a proximal end portion and a distal end portion and a lumen;
a constriction component disposed at or near the distal end portion of the pusher within the lumen of the pusher, said constriction component defining an inner channel having a first cross-sectional extent that is sized to allow at least a portion of an embolic device to be received within the channel;
said constriction component having a proximal end portion and a distal end portion with said inner channel therebetween, said proximal end portion of the constriction component being movable relative to its said distal end portion;
said distal end portion of the constriction component is held stationary relative to the pusher, the proximal end portion of the constriction component is movable relative to the distal end portion and to the pusher, and the distal end portion of the constriction component is connected to the distal end portion of the pusher; and
whereby upon movement of the proximal end portion of the constriction component relative to its said distal end portion, the inner channel defined by the constriction component changes from the first cross-sectional extent to a second smaller cross-sectional extent wherein the constriction component secures the at least a portion of the embolic device within the inner channel. - View Dependent Claims (2, 3, 4, 5, 8, 9, 10, 14, 15)
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6. (canceled)
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7. (canceled)
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11. An embolic device delivery system, comprising:
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a pusher having a proximal end portion, a distal end portion and a lumen extending along the pusher;
a tubular coupling located within the lumen at or near the distal end portion of the pusher, said tubular coupling defining a channel which is sized to receive at least a portion of an embolic device, said tubular coupling having a proximal end section, a middle section, and a distal end section, and the distal end section of the coupling is connected to the pusher and held stationary relative to the pusher, the proximal end section of the coupling being movable relative to the distal end section of the coupling; and
the middle section of the tubular coupling having an inner cross-sectional extent which changes from a first dimension to a second dimension upon movement of the proximal end section of the coupling relative to the distal end section of the coupling. - View Dependent Claims (12, 13, 17)
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16. (canceled)
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18. A combination embolic device and an embolic device delivery system, comprising:
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an embolic device having a proximal end portion and a distal end portion;
an embolic device headpiece located at the proximal end portion of the embolic device;
a pusher having a proximal end portion, a distal end portion and a lumen extending along the pusher;
a constrictor located in the lumen at or near the distal end portion of the pusher, said constrictor defining an inner channel having a first cross-sectional extent, said embolic device headpiece located within the channel;
said constrictor having a proximal end portion and a distal end portion with said inner channel therebetween, said proximal end portion of the constrictor being movable relative to its said distal end portion;
said distal end portion of the constrictor component is held stationary relative to the pusher, and the proximal end portion of the constriction component is movable relative to the pusher; and
whereby upon movement of the proximal end portion of the constrictor relative to its said distal end portion, the inner channel defined by the constrictor changes from the first cross-sectional extent to a second smaller cross-sectional extent wherein the constrictor grasps the embolic device headpiece. - View Dependent Claims (19, 20, 22)
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21. (canceled)
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23. A method of employing a pusher to deliver an embolic device to a location within the vasculature of a patient, the pusher including a constrictor located at a distal end portion of the pusher, said constrictor defining a channel having a cross-sectional extent, said constrictor having a proximal end portion, a distal end portion, and a constriction portion between the proximal and distal end portions, said distal end portion of the constrictor being connected to the distal end portion of the pusher, and said proximal end portion of the constrictor movable relative to the distal end portion of the constrictor, comprising:
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inserting a portion of an embolic device into the channel defined by the constrictor;
moving the proximal end portion of the constrictor to decease the cross-sectional extent of the channel so that the constrictor grasps the portion of the embolic device located in the channel;
fixing the proximal end portion of constrictor relative to the distal end portion of the constrictor;
manipulating the pusher to guide the embolic device to a preselected location within the vasculature of a patient;
increasing the cross-sectional extent of the constriction portion of the channel by releasing the proximal end portion of the constrictor relative to its distal end portion which remains connected to the distal end portion of the pusher, thereby releasing the portion of the embolic device from the constrictor and thus from the pusher. - View Dependent Claims (24, 25, 26)
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Specification