Delivery of therapeutic devices
First Claim
Patent Images
1. A system for intraluminal delivery of a therapeutic device, comprising:
- an elongated guide tube for intraluminal deployment;
a pusher sized and shaped to be slidably positioned within said guide tube, said pusher having a longitudinal axis, an interior lumen wall and a distal end portion;
a therapeutic device with a proximal end portion and a distal end portion, the proximal end portion of the therapeutic device and the distal end portion of the pusher are adapted for engagement at an abutment location therebetween;
a headpiece disk at said abutment location, said headpiece disk including a draw-down opening, said draw-down opening having a longitudinal axis being coaxial with said longitudinal axis of the pusher, and the draw-down opening having an outer perimeter that is radially inwardly spaced away from the lumen wall of said pusher;
a pullwire having a longitudinal axis generally coaxial with said longitudinal axis of said draw-down opening and positioned through said draw-down opening of the headpiece disk, said pullwire having a proximal end portion and a distal end portion, said pullwire further including at least one tine present at said distal end portion of the pullwire, said tine having a generally straight-line orientation at which the tine engages the outer perimeter of the draw-down opening and an offset orientation at which the tine engages said therapeutic device; and
said pullwire and said draw-down opening are sized and shaped relative to each other such that said tine moves from said offset orientation toward said generally straight-line orientation when said pullwire moves through said draw-down opening of the headpiece disk in a proximal direction and said tine slidably engages the outer perimeter of the draw-down opening thereby disengaging said tine from said therapeutic device.
3 Assignments
0 Petitions
Accused Products
Abstract
Therapeutic devices, especially vaso-occlusive devices or embolic coils, are delivered by an apparatus that includes a pullwire having a tine or tines that have an offset orientation that engages a therapeutic device. The pullwire passes through an opening of a headpiece. When the pullwire moves in a relative proximal direction, the tine moves toward a straight-line orientation, and the therapeutic device is liberated from the tine and from the pullwire. At this state, the therapeutic device is ready for deployment at a desired intraluminal location.
-
Citations
16 Claims
-
1. A system for intraluminal delivery of a therapeutic device, comprising:
-
an elongated guide tube for intraluminal deployment; a pusher sized and shaped to be slidably positioned within said guide tube, said pusher having a longitudinal axis, an interior lumen wall and a distal end portion; a therapeutic device with a proximal end portion and a distal end portion, the proximal end portion of the therapeutic device and the distal end portion of the pusher are adapted for engagement at an abutment location therebetween; a headpiece disk at said abutment location, said headpiece disk including a draw-down opening, said draw-down opening having a longitudinal axis being coaxial with said longitudinal axis of the pusher, and the draw-down opening having an outer perimeter that is radially inwardly spaced away from the lumen wall of said pusher; a pullwire having a longitudinal axis generally coaxial with said longitudinal axis of said draw-down opening and positioned through said draw-down opening of the headpiece disk, said pullwire having a proximal end portion and a distal end portion, said pullwire further including at least one tine present at said distal end portion of the pullwire, said tine having a generally straight-line orientation at which the tine engages the outer perimeter of the draw-down opening and an offset orientation at which the tine engages said therapeutic device; and said pullwire and said draw-down opening are sized and shaped relative to each other such that said tine moves from said offset orientation toward said generally straight-line orientation when said pullwire moves through said draw-down opening of the headpiece disk in a proximal direction and said tine slidably engages the outer perimeter of the draw-down opening thereby disengaging said tine from said therapeutic device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 16)
-
-
11. An apparatus for intraluminal delivery of a therapeutic device, comprising:
-
a pusher sized and shaped for intraluminal delivery, said pusher having a longitudinal axis, an interior lumen wall and a distal end portion; a therapeutic device with a proximal end portion and a distal end portion, the proximal end portion of the therapeutic device and the distal end portion of the pusher are adapted for engagement at an abutment location therebetween; a headpiece disk at said abutment location, said headpiece disk including a draw-down opening, said draw-down opening having a longitudinal axis being generally coaxial with said longitudinal axis of the pusher, and the draw-down opening having an outer perimeter that is radially inwardly spaced away from the lumen wall of said pusher; a pullwire having a longitudinal axis generally coaxial with said longitudinal axis of said draw-down opening and positioned through said draw-down opening of the headpiece disk, said pullwire having a proximal end portion and a distal end portion, said pullwire further including at least one tine present at said distal end portion of the pullwire, said tine having a generally straight-line orientation at which the tine engages the outer perimeter of the draw-down opening and an offset orientation at which the tine engages said therapeutic device; and said pullwire and said draw-down opening are sized and shaped relative to each other such that said tine moves from said offset orientation toward said generally straight-line orientation when said pullwire moves through said draw-down opening of the headpiece disk in a proximal direction and said tine slidably engages the outer perimeter of the draw-down opening thereby disengaging said tine from said therapeutic device. - View Dependent Claims (12, 13, 14, 15)
-
Specification