BLOOD FLOW METER
First Claim
Patent Images
1. A blood pump system, comprising:
- a blood pump having an inflow conduit for receiving blood from a left ventricle of a heart and an outflow conduit for returning blood to a circulatory system; and
a controller operably connected to said blood pump;
wherein said inflow conduit comprises a first sensor located to detect an inflow conduit pressure that is substantially the same as left ventricular pressure, wherein said sensor is adapted to send a signal regarding said inflow conduit pressure to said controller,wherein said outflow conduit comprises a second sensor located to detect an outflow conduit pressure that is substantially the same as arterial pressure, wherein said sensor is adapted to send a signal regarding said outflow conduit pressure to said controller,and wherein said controller is adapted to calculate blood flow through said blood pump.
3 Assignments
0 Petitions
Accused Products
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.
-
Citations
17 Claims
-
1. A blood pump system, comprising:
-
a blood pump having an inflow conduit for receiving blood from a left ventricle of a heart and an outflow conduit for returning blood to a circulatory system; and a controller operably connected to said blood pump; wherein said inflow conduit comprises a first sensor located to detect an inflow conduit pressure that is substantially the same as left ventricular pressure, wherein said sensor is adapted to send a signal regarding said inflow conduit pressure to said controller, wherein said outflow conduit comprises a second sensor located to detect an outflow conduit pressure that is substantially the same as arterial pressure, wherein said sensor is adapted to send a signal regarding said outflow conduit pressure to said controller, and wherein said controller is adapted to calculate blood flow through said blood pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for measuring blood flow in a subject having a blood pump system, comprising:
-
detecting left ventricular pressure via a sensor present on an inflow conduit of said blood pump system; detecting arterial pressure via a sensor present on an outflow conduit of said blood pump system; calculating blood flow based on the difference between said left ventricular pressure and said arterial pressure; and outputting said calculated blood flow for display. - View Dependent Claims (11, 12, 13, 14, 15)
-
-
16. A blood pump system, comprising:
-
a blood pump having an inflow conduit for receiving blood from a right ventricle or right atrium of a heart and an outflow conduit for returning blood to a circulatory system; and a controller operably connected to said blood pump; wherein said inflow conduit comprises a first sensor located to detect an inflow conduit pressure that is substantially the same as right ventricular or right atrial pressure, wherein said sensor is adapted to send a signal regarding said inflow conduit pressure to said controller, wherein said outflow conduit comprises a second sensor located to detect an outflow conduit pressure that is substantially the same as pulmonary artery pressure, wherein said sensor is adapted to send a signal regarding said outflow conduit pressure to said controller, and wherein said controller is adapted to calculate blood flow through said blood pump.
-
-
17. A method for measuring blood flow in a subject having a blood pump system, comprising:
-
detecting right ventricular or right atrial pressure via a sensor present on an inflow conduit of said blood pump system; detecting pulmonary artery pressure via a sensor present on an outflow conduit of said blood pump system; calculating blood flow based on the difference between said right ventricular or right atrial pressure and said pulmonary artery pressure; and outputting said calculated blood flow for display.
-
Specification