US 12,295,614 B2
High power atherectomy with multiple safety limits
Matthew Saterbak, Big Lake, MN (US); Corydon Carlson, Stillwater, MN (US); and Andrew David Bicek, Elk River, MN (US)
Assigned to BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed by BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed on Jul. 26, 2023, as Appl. No. 18/226,569.
Application 18/226,569 is a continuation of application No. 17/174,996, filed on Feb. 12, 2021, granted, now 11,744,609.
Claims priority of provisional application 62/978,600, filed on Feb. 19, 2020.
Prior Publication US 2023/0363788 A1, Nov. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/3207 (2006.01); G16H 40/60 (2018.01); A61B 17/32 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/320758 (2013.01) [G16H 40/60 (2018.01); A61B 2017/320032 (2013.01); A61B 2090/031 (2016.02); A61B 2090/0807 (2016.02)] 17 Claims
OG exemplary drawing
 
1. An atherectomy system, comprising:
an electric drive mechanism adapted to rotatably actuate an atherectomy burr, the electric drive mechanism including:
a drive cable adapted to be coupled with the atherectomy burr; and
an electric drive motor that is adapted to rotate the drive cable; and
a controller adapted to regulate operation of the electric drive mechanism, the controller regulating operation of the electric drive mechanism in accordance with a dynamic torque limit value that varies in accordance with an operating speed of the electric drive mechanism;
wherein the controller is further adapted to regulate operation of the electric drive mechanism in accordance with a power input limit value that limits how much power can be put into the atherectomy burr and an energy input limit value that limits how much energy can be put into the atherectomy burr.