US 11,696,782 B2
Rotational medical device
Corydon Carlson, Stillwater, MN (US); David Gordon Spangler, New Richmond, WI (US); Daniel Frank Massimini, Brooklyn Park, MN (US); Laszlo Trent Farago, Hudson, WI (US); and Mark A. Hilse, Ham Lake, MN (US)
Assigned to Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed by BOSTON SCIENTIFIC SCIMED, INC., Maple Grove, MN (US)
Filed on Dec. 11, 2018, as Appl. No. 16/217,009.
Claims priority of provisional application 62/597,721, filed on Dec. 12, 2017.
Prior Publication US 2019/0175211 A1, Jun. 13, 2019
Int. Cl. A61B 17/32 (2006.01); A61B 17/3207 (2006.01); A61B 1/00 (2006.01); A61B 17/00 (2006.01); G05B 19/4061 (2006.01); A61B 90/00 (2016.01)
CPC A61B 17/320758 (2013.01) [A61B 1/00133 (2013.01); A61B 17/00234 (2013.01); A61B 17/32002 (2013.01); G05B 19/4061 (2013.01); A61B 2017/00017 (2013.01); A61B 2017/00398 (2013.01); A61B 2090/031 (2016.02); G05B 2219/37622 (2013.01); G05B 2219/42325 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A medical device configured for use in an atherectomy procedure in a vessel of a patient, the medical device comprising:
an elongated drive shaft;
a rotational tip member coupled to a distal end of the elongated drive shaft, the rotational tip member configured to rotate and engage material in a patient vessel while rotating;
a motor coupled to a proximal end of the elongated drive shaft to rotate the rotational tip member; and
a control unit configured to control a motor state of the motor, the control unit is further configured to adjust the motor state to decelerate the motor in response to a detected stall condition, and
wherein the stall condition is detected when a speed of the motor reaches or goes beyond a threshold level.