Devices and methods for crimping and loading a medical device into a delivery system

摘要

A device for crimping an expandable medical device and loading the expandable medical device into a delivery system includes an actuator, a compression assembly, and a pusher. The compression assembly is disposed in a compression chamber of the actuator and includes a plurality of compression elements coupled to each other to form a central cavity. The compression elements are coupled to the actuator such that rotation of the actuator causes the compression elements to rotate such that the central cavity radially compresses from an expanded configuration to a compressed configuration. The pusher includes a pusher rod and is configured to translate relative to the actuator towards the compression chamber when the cavity is in the compressed configuration such that the pusher rod may enter the cavity and push the medical device out of the cavity into delivery system.

主权项

1. A device for crimping and loading an expandable medical device from an expanded configuration to a compressed configuration, the device comprising:
an actuator including a compression chamber and an opening; a compression assembly disposed in the compression chamber, wherein the compression assembly includes a plurality of compression elements arranged adjacent each other and forming a central cavity therein, wherein the compression elements are coupled to the actuator such that rotation of the actuator causes the compression elements to rotate such that the central cavity radially compresses from an expanded configuration to a compressed configuration; a pusher coupled to the actuator opposite the opening, wherein the pusher includes an outer wall defining a cavity and a pusher rod disposed within the cavity, the pusher rod being sized and shaped generally similar to the central cavity formed by the compression elements in the compressed configuration, wherein the pusher is configured to translate relative to the actuator such that the pusher rod may enter the central cavity with the central cavity in the compressed configuration; and a sleeve disposed within the actuator opposite the opening, wherein the sleeve is also disposed within the cavity of the pusher.