Stretch resistant therapeutic device

摘要

A vasoocclusive coil is reinforced with a stretch resistant member to improve safety during retraction of the coil. The stretch resistant member is fixedly attached at one end to the vasoocclusive coil, and the other end of the stretch resistant member is detachably mounted to an elongated pusher member to allow for placement and release of the vasoocclusive coil within the patient's vasculature.

主权项

1. A stretch resistant therapeutic device for release and deployment within a patient's vasculature, comprising:
a vasoocclusive coil having a proximal end and a distal end, said vasoocclusive coil defining a lumen between said proximal and distal ends, said vasoocclusive coil including a distal therapeutic portion; a stretch resistant member extending through said lumen of said vasoocclusive coil, said stretch resistant member having distal and proximal ends, said stretch resistant member being fixedly attached at the distal end to the distal end of said vasoocclusive coil, said proximal end of said stretch resistant member including at least one rounded member; and a syringe having a distal end including a body of constraining material forming a tubular distal tip detachably retaining and forming a tight fluid seal about said at least one rounded member and about the proximal end of the vasoocclusive coil to capture said at least one rounded member and the proximal end of the vasoocclusive coil within an inner lumen of the tubular distal tip, and wherein said syringe is operative to dislodge said at least one rounded member from said body of constraining material to deploy said vasoocclusive coil within the patient's vasculature.