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US 2019/0314563 A1Published application
Prevention of Aortic Valve Fusion
AssigneeTc1 LLC
InventorVictor Poirier
Life of this patent
Estimating the term…
Abstract
Materials and methods related to blood pump systems are described. These can be used in patients to, for example, monitor arterial pressure, measure blood flow, maintain left ventricular pressure within a particular range, avoid left ventricular collapse, prevent fusion of the aortic valve in a subject having a blood pump, and provide a means to wean a patient from a blood pump.
Claims18
A blood pump system, comprising:
- a blood pump including an inflow conduit for receiving blood from a ventricle of a patient and an outflow conduit for returning blood to an artery of the patient;
- a sensor configured to generate an inflow conduit pressure signal indicative of a pressure of blood within the inflow conduit;
- and
- a controller operatively connected to the blood pump and the sensor, the controller being configured to control a speed of the blood pump based on changes in the pressure of blood within the inflow conduit generated by the heart, wherein the speed of the blood pump is decreased in response to an increase in the pressure of blood within the inflow conduit generated by the ventricle.
1 more element
A blood pump system, comprising:
- a blood pump including an inflow conduit for receiving blood from a ventricle of a patient and an outflow conduit for returning the blood to an artery of the patient;
- a controller operatively connected to the blood pump and configured to:
- control the speed of the blood pump over a first period of time encompassing multiple contractions of the ventricle to provide circulatory support to the patient to maintain a positive level of systolic blood pressure within the ventricle within a first predetermined range;
- subsequent to the first period of time, control the speed of the blood pump over a second period of time encompassing multiple contractions of the ventricle to provide a reduced level of circulatory support to the patient relative to the circulatory support provided to the patient over the first period of time;
- subsequent to the second period of time, control the speed of the blood pump over a third period of time encompassing multiple contractions of the ventricle to provide circulatory support to the patient to maintain a positive level of systolic blood pressure within the ventricle within the first predetermined range;
- and
- determine whether the ventricle provided circulatory support to the patient over the second period of time that exceeded a predetermined minimum level of circulatory support.
4 more elements
A blood pump system, comprising:
- a blood pump including an inflow conduit for receiving blood from a ventricle of a patient and an outflow conduit for returning blood to an artery of the patient;
- a sensor configured to generate an inflow conduit pressure signal indicative of a pressure of blood within the inflow conduit;
- and
- a controller operatively connected to the blood pump and the sensor, the controller being configured to control a speed of the blood pump based on the inflow conduit pressure signal to:
- maintain the pressure of blood within the inflow conduit equal to or greater than a lower threshold for avoiding ventricular collapse, and
- maintain the pressure of blood within the inflow conduit equal to or less than an upper threshold to maintain an end diastolic blood pressure within an acceptable range.
3 more elements
Dependencies are inferred from the claim text.