Patent ID: 8747332

Claim:
A rotatable medical device for crossing through an anatomical structure, the medical device comprising: a housing; a motor positioned in the housing; a hollow guidewire removably coupled to the housing and extending distally therefrom, the hollow guidewire advanceable intravascularly to a location proximate an anatomical structure; and a drive shaft rotatably disposed within the hollow guidewire, the drive shaft extending distally from the motor positioned in the housing to a distal tip rotatably disposed at a distal end of the hollow guidewire; the drive shaft being rotatable within the hollow guidewire with the motor to thereby rotate the distal tip; wherein the housing and the motor are decouplable from the hollow guidewire and the drive shaft, respectively, while the drive shaft remains positioned within the hollow guidewire such that the hollow guidewire is configured to permit the advancement of an access device over the hollow guidewire to an anatomical location after decoupling the housing from the hollow guidewire.