主权项 |
1. A medical device, comprising:
a main catheter body extending from a proximal end to a distal end; an inflation lumen extending within the main catheter body; a distal tip assembly releasably coupled to the distal end of the main catheter body, the distal tip assembly including a tubular member defining a lumen extending from a proximal end to a sealed distal end, the tubular member including a plurality of apertures formed in an outer surface thereof, and a inflatable balloon disposed over and secured to the tubular member; and a release mechanism coupled to the distal end of the main catheter body, the release mechanism comprising two or more retaining members extending distally away from the distal end of the main catheter body and engaging an outer surface of the inflatable balloon when the distal tip assembly is coupled to the distal end of the main catheter body prior to deployment, wherein the retaining members are configured such that upon expansion of the inflatable balloon, the retaining members are flexed outward and away from the main catheter body until the distal tip assembly including the inflatable balloon is released from the main catheter body. |