Cardiovascular assist system that quantifies heart function and facilitates heart recovery
AssigneesABIOMED, Inc., Massachusetts Institute of Technology
InventorsElazer Edelman, Brian Chang, Noam Josephy, Sonya Sanat Bhavsar
Life of this patent
Estimating the term…
Abstract
The systems, devices, and methods presented herein use a heart pump to obtain measurements of cardiovascular function. The heart pumps described herein can operate in parallel with and unload the heart. The system can quantify the functioning of the native heart by measuring certain parameters/signals such as pressure or motor current, then calculate and display one or more metrics of cardiovascular function. These metrics, such as left ventricular end diastolic pressure (LVEDP), left ventricular pressure, and contractility, provide valuable information to a user regarding a patient's state of heart function and recovery.
Claims25
A heart pump system comprising:
- a catheter;
- a motor;
- a rotor operatively coupled to the motor;
- and
- a pump housing at least partially surrounding the rotor so that actuating the motor drives the rotor and pumps blood through the pump housing;
- a sensor configured to detect a hemodynamic parameter over time;
- and
- a controller configured to:
- detect over time a motor parameter associated with the motor,
- receive an input from the sensor of the detected hemodynamic parameter over time,
- determine a relationship between the detected hemodynamic parameter and the detected motor parameter,
- characterize the relationship between the hemodynamic parameter and the motor parameter using a polynomial best fit algorithm, and
- store the determined relationship in a memory.
A heart pump system comprising:
- a catheter;
- a motor;
- a rotor operatively coupled to the motor;
- a pump housing at least partially surrounding the rotor so that actuating the motor drives the rotor and pumps blood through the pump housing, and
- a pressure sensor configured to detect an aortic pressure over time;
- and
- a controller configured to:
- detect a motor parameter over time,
- receive the aortic pressure over time from the sensor,
- store a relationship between the motor parameter and the aortic pressure in the memory;
- determine a time period in which an inflection point indicative of LVEDP can be found;
- and
- identify the inflection point in the aortic pressure based on the determined time period.
Dependencies are inferred from the claim text.