Patents by Inventor Michael John Eng
Michael John Eng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9220529Abstract: An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft. When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel.Type: GrantFiled: September 21, 2012Date of Patent: December 29, 2015Assignee: Cardiovascular Systems, Inc.Inventors: Jody Lee Rivers, Charles A. Plowe, Cassandra Ann Piippo Svendsen, Walter John Dobrovolny, Michael John Eng, Scott M. Hanson
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Patent number: 9119661Abstract: An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft. When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel.Type: GrantFiled: September 21, 2012Date of Patent: September 1, 2015Assignee: Cardiovascular Systems, Inc.Inventors: Jody Lee Rivers, Charles A. Plowe, Cassandra Ann Piippo Svendsen, Walter John Dobrovolny, Michael John Eng, Scott M. Hanson
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Patent number: 9119660Abstract: An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft. When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel.Type: GrantFiled: September 21, 2012Date of Patent: September 1, 2015Assignee: Cardiovascular Systems, Inc.Inventors: Jody Lee Rivers, Charles A. Plowe, Cassandra Ann Piippo Svendsen, Walter John Dobrovolny, Michael John Eng, Scott M. Hanson
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Patent number: 9050126Abstract: An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft. When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel.Type: GrantFiled: February 26, 2010Date of Patent: June 9, 2015Assignee: Cardiovascular Systems, Inc.Inventors: Jody Lee Rivers, Charles A. Plowe, Cassandra Ann Piippo Svendsen, Walter John Dobrovolny, Michael John Eng, Scott M. Hanson
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Publication number: 20150051626Abstract: An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft. When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel.Type: ApplicationFiled: October 30, 2014Publication date: February 19, 2015Inventors: Jody Lee Rivers, Charles A. Plowe, Cassandra Ann Piippo Svendsen, Walter John Dobrovolny, Michael John Eng, Scott M. Hanson
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Publication number: 20130023913Abstract: An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft. When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel.Type: ApplicationFiled: September 21, 2012Publication date: January 24, 2013Applicant: CARDIOVASCULAR SYSTEMS, INC.Inventors: Jody Lee Rivers, Charles A. Plowe, Cassandra Ann Piippo Svendsen, Walter John Dobrovolny, Michael John Eng, Scott M. Hanson
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Publication number: 20130018399Abstract: An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft. When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel.Type: ApplicationFiled: September 21, 2012Publication date: January 17, 2013Applicant: CARDIOVASCULAR SYSTEMS, INC.Inventors: Jody Lee Rivers, Charles A. Plowe, Cassandra Ann Piippo Svendsen, Walter John Dobrovolny, Michael John Eng, Scott M. Hanson
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Publication number: 20130018398Abstract: An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft. When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel.Type: ApplicationFiled: September 21, 2012Publication date: January 17, 2013Applicant: CARDIOVASCULAR SYSTEMS, INC.Inventors: Jody Lee Rivers, Charles A. Plowe, Cassandra Ann Piippo Svendsen, Walter John Dobrovolny, Michael John Eng, Scott M. Hanson
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Publication number: 20110213391Abstract: An atherectomy device is disclosed, which is rotationally driven by an electric motor. In some designs, the device includes features unavailable on gas turbine-driven systems, such as the storing in memory of low/medium/high preset rotation speeds for particular models of handle, calculations of the amount of saline left in the IV and associated warnings when it gets sufficiently low, and automatic adjustment of the IV pump rate to a predetermined or calculated level when the rotational speed of the motor is changed. The electric motor has far more rotational inertia than a comparable gas turbine, so the system includes a control mechanism that helps prevent damage from excessive torque being applied to the distal end of the drive shaft. When an obstruction at the distal end is detected, by a drop in the motor rotational speed, the motor is released and is allowed to spin freely as a flywheel.Type: ApplicationFiled: February 26, 2010Publication date: September 1, 2011Applicant: CARDIOVASCULAR SYSTEMS, INC.Inventors: Jody Lee Rivers, Charles A. Plowe, Cassandra Ann Piippo Svendsen, Walter John Dobrovolny, Michael John Eng, Scott M. Hanson