US 12,295,612 B2
Atherectomy devices and methods
Michael Kallok, St. Paul, MN (US); Cassandra Ann Piippo Svendsen, Blaine, MN (US); Paul Joseph Robinson, Mahtomedi, MN (US); Charles Anthony Plowe, Blaine, MN (US); and Albert Selden Benjamin, St Paul, MN (US)
Assigned to Cardio Flow, Inc., St. Paul, MN (US)
Filed by Cardio Flow, Inc., St. Paul, MN (US)
Filed on Oct. 17, 2023, as Appl. No. 18/380,926.
Application 18/380,926 is a continuation of application No. 17/576,278, filed on Jan. 14, 2022, granted, now 11,812,988.
Application 17/576,278 is a continuation of application No. 16/733,514, filed on Jan. 3, 2020, granted, now 11,253,290, issued on Feb. 22, 2022.
Application 16/733,514 is a continuation of application No. 16/196,894, filed on Nov. 20, 2018, granted, now 10,524,826, issued on Jan. 7, 2020.
Application 16/196,894 is a continuation of application No. 16/008,136, filed on Jun. 14, 2018, granted, now 11,147,582, issued on Oct. 19, 2021.
Prior Publication US 2024/0074783 A1, Mar. 7, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/3207 (2006.01); A61B 17/32 (2006.01)
CPC A61B 17/320725 (2013.01) [A61B 17/320758 (2013.01); A61B 2017/320008 (2013.01); A61B 2017/320716 (2013.01); A61B 2017/320733 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of rotationally abrading a material along an interior of an arteriovenous graft, the method comprising:
activating an electric motor housed within an actuator handle assembly positioned at a proximal end portion of a torque-transmitting coil to drive simultaneously rotation of an array of eccentric abrasive burrs within an interior of a synthetic arteriovenous graft at a rotational speed of 20,000 to 160,000 rpms so that at least one eccentric abrasive burr in the array travels in an orbital path having an orbit diameter multiple times greater than an outer maximum diameter of said at least one eccentric abrasive burr, the array of eccentric abrasive burrs being fixedly mounted to the torque-transmitting coil that defines a longitudinal axis extending in a longitudinal direction; and
during said simultaneously rotating the array of eccentric abrasive burrs within the interior of the synthetic arteriovenous graft, slidably moving a carriage within a housing of the actuator handle assembly to reciprocate the array of eccentric abrasive burrs back and forth in the longitudinal direction within the interior of the synthetic arteriovenous graft, wherein the carriage is slidably movable in the longitudinal direction at the proximal end of the torque-transmitting coil;
wherein said slidably moving a carriage within a housing of the actuator handle assembly comprises moving the electric motor together with the carriage within the housing of the actuator handle assembly.