Polarizable delivery mechanism for medical device deployment

摘要

A medical device assembly having a polarizable delivery mechanism reversibly engaged with a medical device and a method used by an operator to deploy said medical device at a targeted site in a body vessel is provided. The polarizable release mechanism generally comprises a pusher element having a distal end including at least two tines; the tines having a proximal section and a distal section, the tines being capable of exhibiting polarizable properties. The medical device has an opening sized to receive and to detachably engage the distal section of the tines. The delivery mechanism has an engaged position in which the tines securely hold the medical device and a detached position in which the tines and medical device are substantially unengaged. The operator causes the delivery mechanism to move from the engaged position to the detached position by applying or removing an energy stimulus to change the polarization.

主权项

1. A medical device assembly having a polarizable delivery mechanism for use by an operator in deploying a medical device at a targeted site in a body vessel, the medical device assembly comprising:
a delivery mechanism including a pusher element having a proximal end and a distal end, the distal end including at least two tines; the tines having a proximal section and an distal section, the tines capable of exhibiting polarizable properties; and a medical device having a proximal part and a distal part; the proximal part adapted to detachably engage the distal section of the tines, the tines being separated from each other defining a default position for engaging the proximal part of the medical device, the default position being unactivated by an energy stimulus, the tines being adapted to be selectively engaged and disengaged; wherein a change in the polarization exhibited by the tines causes the tines to move toward one another, thereby, allowing the medical device to detach from the pusher element for deployment in the body vessel.