Patent ID: 7674282

Claim:
A system for delivering a medical device within vasculature, comprising: an inner catheter; a medical device; an outer generally tubular member co-axially over the medical device; and a control handle connected to the inner catheter and the generally tubular member, the control handle including an actuator coupled to a retraction mechanism, the actuator being coupled to the outer tubular member and adapted to retract the tubular member when the actuator is actuated; and a lock mechanism located on the control handle for preventing the retraction mechanism from moving proximally until the medical device is ready to be deployed, the lock mechanism being movable from a locked position to an unlocked position, the lock mechanism including a locking arm which remains in contact with a portion of the retraction mechanism to prevent movement of the retraction mechanism, the locking mechanism further including a biasing element which maintains the lock mechanism in either the locked or unlocked position, wherein the lock mechanism includes a finger engaging member located on the outer surface of the control handle which is actuated by application of an inward force to the finger engaging member to overcome the biasing force achieved by the biasing element and application of a sliding motion to the finger engaging member to move it along the control handle, the biasing element is a cam-like spring attached to the finger engaging member which engages a support surface formed on the control handle and the cam-like spring includes a pair of resilient arms having a contact surface which slides on the support surface formed on the control handle.