Delivery/recovery system for septal occluder

摘要

A delivery/recovery system to allow an operator to deploy and recover a medical implant, such as an occluder for closing a patent foramen ovale (PFO). In one embodiment, the system includes a delivery mandrel for preventing the occluder from moving in the proximal direction, a delivery wire for securing the occluder to the delivery mandrel and preventing unwanted movement in the distal direction, and a sheath for enveloping the delivery wire, mandrel and occluder. By moving the sheath relative to the occluder in a series of steps, the occluder opens first on a distal side and then on a proximal side, in a manner that holds the occluder in place.

主权项

1. A delivery system for delivering a medical device to a living body, the device adapted to be elongated along an axial direction when in a sheath in a delivery position, the device including one or more expanding portions that expand in a radial direction perpendicular to the axial direction when delivered to form a deployed configuration, the device further including means for holding the device in the deployed position when the device is in the living body, the system comprising: means for limiting movement by the device in the proximal direction; means for limiting movement by the holding means in the proximal direction; means for limiting movement by the device in a distal direction; and means for enveloping the three limiting means; the three limiting means and the enveloping means being movable relative to each other and to the device in a series of steps for allowing the expanded portions of the device to expand, and for the holding means to hold the device in its expanded configuration when in the deployed configuration.