Delivery devices and methods for leadless cardiac devices

A delivery system for delivering an implantable leadless pacing device, the delivery system comprising:

• an outer tubular member including a lumen extending from a proximal end to a distal end thereof;
• an intermediate tubular member including a lumen extending from a proximal end to a distal end thereof, the intermediate tubular member slidably disposed within the lumen of the outer tubular member;
• an inner tubular member including a lumen extending from a proximal end to a distal end thereof, the inner tubular member slidably disposed within the lumen of the intermediate tubular member;
• a distal holding section extending distally of a distal end of the intermediate tubular member, the distal holding section defining a cavity therein for receiving an implantable leadless pacing device;
• and
• a handle assembly, the handle assembly comprising:
• a distal hub portion affixed adjacent to the proximal end of the outer tubular member;
• an intermediate hub portion affixed adjacent to the proximal end of the intermediate tubular member, the intermediate hub portion having a proximal portion and a distal portion;
• a proximal hub portion affixed adjacent to the proximal end of the inner tubular member, the proximal hub portion having a distal end region surrounding at least a portion of the proximal portion of the intermediate hub portion;
• a first locking mechanism configured to selectively couple the intermediate hub portion to the proximal hub portion, the first locking mechanism comprising a depressible button;
• and
• a second locking mechanism configured to selectively couple the distal hub portion to the intermediate hub portion;
• and
• wherein the distal hub portion, the intermediate hub portion, and the proximal hub portion are individually slidable along a longitudinal axis of the handle assembly relative to each other.

A delivery system for delivering an implantable leadless pacing device, the delivery system comprising:

• an outer tubular member including a lumen extending from a proximal end to a distal end thereof;
• an intermediate tubular member including a lumen extending from a proximal end to a distal end thereof, the intermediate tubular member slidably disposed within the lumen of the outer tubular member;
• an inner tubular member including a lumen extending from a proximal end to a distal end thereof, the inner tubular member slidably disposed within the lumen of the intermediate tubular member;
• a distal holding section extending distally of a distal end of the intermediate tubular member, the distal holding section defining a cavity therein for receiving an implantable leadless pacing device;
• and
• a handle assembly, the handle assembly comprising:
• a distal hub portion affixed adjacent to the proximal end of the outer tubular member;
• an intermediate hub portion affixed adjacent to the proximal end of the intermediate tubular member;
• a proximal hub portion affixed adjacent to the proximal end of the inner tubular member;
• a first locking mechanism configured to selectively couple the intermediate hub portion to the proximal hub portion, the first locking mechanism comprising a depressible button movable between a locked configuration and an unlocked configuration;
• and
• a second locking mechanism configured to selectively couple the distal hub portion to the intermediate hub portion;
• and
• wherein the distal hub portion, the intermediate hub portion, and the proximal hub portion are individually slidable along a longitudinal axis of the handle assembly relative to each other.