| US 11,806,041 B2 | ||
| Atherectomy devices and methods | ||
| Cassandra Ann Piippo Svendsen, Blaine, MN (US); Ryan D. Welty, Blaine, MN (US); and Michael Kallok, St. Paul, MN (US) | ||
| Assigned to Cardio Flow, Inc., St. Paul, MN (US) | ||
| Filed by Cardio Flow, Inc., St. Paul, MN (US) | ||
| Filed on Jan. 5, 2023, as Appl. No. 18/150,369. | ||
| Application 18/150,369 is a continuation of application No. 17/592,797, filed on Feb. 4, 2022. | ||
| Application 17/592,797 is a continuation of application No. 16/530,284, filed on Aug. 2, 2019, granted, now 11,272,954, issued on Mar. 15, 2022. | ||
| Claims priority of provisional application 62/715,643, filed on Aug. 7, 2018. | ||
| Prior Publication US 2023/0149039 A1, May 18, 2023 | ||
| Int. Cl. A61B 17/3207 (2006.01); A61B 17/32 (2006.01); A61B 17/22 (2006.01) | ||
| CPC A61B 17/320758 (2013.01) [A61B 17/32002 (2013.01); A61B 17/32075 (2013.01); A61B 2017/22038 (2013.01); A61B 2017/22094 (2013.01); A61B 2017/320004 (2013.01); A61B 2017/320741 (2013.01); A61B 2017/320775 (2013.01)] | 19 Claims |
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1. A rotational atherectomy device, comprising:
a torque-transmitting coil slidably and rotatably disposed within a lumen of a sheath such that a distal end portion of the torque-transmitting coil is positioned distally of a distal end of the sheath; an eccentric abrasive element fixedly mounted to the distal end portion of the torque-transmitting coil; and a rotational atherectomy control handle, including:
an outer handle housing having a front portion connected with a proximal end of the sheath and a rear portion, the outer handle housing surrounding both an electric motor to drive rotation of the torque-transmitting coil and a controller assembly that regulates a rotational speed of the torque-transmitting coil and that activates the electric motor to rotate the torque-transmitting coil in response to actuation of an atherectomy trigger button;
a carriage arranged within the outer handle housing and being movable in a longitudinal direction relative to the outer handle housing so as to longitudinally translate the torque-transmitting coil relative to the sheath, the carriage carrying the atherectomy trigger button external to the outer handle housing and the electric motor within the outer handle housing;
a rear guidewire port accessible along the rear portion of the outer handle housing;
a guidewire brake actuator disposed along the rear portion of the outer handle housing and being movable relative to the outer handle housing to a locked position to releasably lock a guidewire in a stationary position relative to the outer handle housing; and
a user interface accessible along an upper exterior face of the outer handle housing and including: the atherectomy trigger button movable relative to the outer handle housing and being in communication with the controller assembly housed within the outer handle housing, a plurality of rotation speed control buttons positioned rearward of the atherectomy trigger button for input of a selected rotational speed setting for the torque-transmitting coil, and a guidewire brake light indicator that illuminates in response to movement of the guidewire brake actuator to the locked position and is positioned between a rearmost one of the plurality of rotation speed control buttons and the guidewire brake actuator,
wherein the controller assembly housed within the outer handle housing is configured to prevent activation of the electric motor in response to detecting that the guidewire brake actuator is moved to an unlocked position.
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