Vasculature occlusion device detachment system with tapered corewire and heater activated fiber detachment
First Claim
1. A vasculature occlusion device detachment system comprising:
- a heating element comprising a wound coil of a predetermined resistivity;
the wound coil having a proximal end and an opposite distal end;
a coil securing suture having a distal end and an opposite proximal end;
the proximal end of the coil securing suture terminating in a proximal bead retained within the wound coil while the distal end of the coil securing suture extends beyond the distal end of the wound coil;
the coil securing suture being rotatable, independently of the wound coil, 360 degrees about a longitudinal axis extending therethrough the wound coil;
an electrically conductive corewire having a proximal end and an opposite distal end;
the distal end of the electrically conductive corewire being connected to the proximal end of the wound coil; and
an insulated electrically conductive wire separate from the electrically conductive corewire;
the insulated electrically conductive wire having a proximal end and an opposite distal end;
the distal end of the insulated electrically conductive wire being secured to the wound coil at a wound coil to conductive wire connection.
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Accused Products
Abstract
A vasculature occlusion device detachment system including a wound coil heating element of a predetermined resistivity. A coil securing suture terminates in a proximal bead retained within the wound coil heating element while the distal end of the coil securing suture extends beyond the distal end of the wound coil heating element and is attached to the proximal end of the vasculature occlusion device. The coil securing suture is independently rotatable of the wound coil heating element 360 degrees about a longitudinal axis extending therethrough the wound coil heating element. A power source applies electrical current to the wound coil heating element via an electrically conductive corewire and separate insulated electrically conductive wire to increase its resistance and, as a result of the heat produced, sever the coil securing suture.
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Citations
12 Claims
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1. A vasculature occlusion device detachment system comprising:
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a heating element comprising a wound coil of a predetermined resistivity;
the wound coil having a proximal end and an opposite distal end;a coil securing suture having a distal end and an opposite proximal end;
the proximal end of the coil securing suture terminating in a proximal bead retained within the wound coil while the distal end of the coil securing suture extends beyond the distal end of the wound coil;
the coil securing suture being rotatable, independently of the wound coil, 360 degrees about a longitudinal axis extending therethrough the wound coil;an electrically conductive corewire having a proximal end and an opposite distal end;
the distal end of the electrically conductive corewire being connected to the proximal end of the wound coil; andan insulated electrically conductive wire separate from the electrically conductive corewire;
the insulated electrically conductive wire having a proximal end and an opposite distal end;
the distal end of the insulated electrically conductive wire being secured to the wound coil at a wound coil to conductive wire connection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vasculature occlusion device detachment system comprising:
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a heating element of a predetermined resistivity;
the heating element having a proximal end and an opposite distal end;a coil securing suture having a distal end and an opposite proximal end;
the proximal end of the coil securing suture terminating in a proximal bead retained within the heating element while the distal end of the coil securing suture extends beyond the distal end of the heating element;
the coil securing suture being rotatable, independently of the heating element, 360 degrees about a longitudinal axis extending therethrough the heating element;an electrically conductive corewire having a proximal end and an opposite distal end;
the distal end of the electrically conductive corewire being connected to the proximal end of the heating element; andan insulated electrically conductive wire separate from the electrically conductive corewire;
the insulated electrically conductive wire having a proximal end and an opposite distal end;
the distal end of the insulated electrically conductive wire being secured to the heating element at a heating element to conductive wire connection;wherein the heating element is a helically wound coil comprising a plurality of windings forming a central lumen extending longitudinally therethrough from a proximal end to a distal end of the helically wound coil;
wherein an inner diameter of the helically wound coil at its proximal end is greater than an inner diameter of the helically wound coil at its distal end;
the proximal bead having an outer diameter smaller than the inner diameter of the helically wound coil at its proximal end; and
the proximal bead of the coil securing suture being freely movable in an axial direction within the central lumen of the helically wound coil but retained at the distal end of the helically wound coil by its smaller inner diameter relative to the outer diameter of the proximal bead. - View Dependent Claims (12)
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Specification