BLOOD RESERVOIR WITH LEVEL SENSOR
First Claim
1. A perfusion system comprising:
- a heart lung machine;
a blood reservoir adapted to hold a fluid, the blood reservoir having a volume determined by a geometric configuration, wherein the blood reservoir includes a communication device for communicating the geometric configuration to the heart lung machine;
a blood level sensor secured to the blood reservoir, the level sensor configured to determine a fluid level within the blood reservoir; and
a controller coupled to the heart lung machine, the controller configured to receive the fluid level and calculate a blood volume contained within the blood reservoir, based on the fluid level and the geometric configuration;
wherein the heart lung machine is configured to adjust an operating parameter based on the calculated blood volume.
1 Assignment
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Accused Products
Abstract
The disclosure pertains to a perfusion system that is easy to set-up, use and monitor during a bypass procedure. In some embodiments, the disclosure pertains to a perfusion system in which at least some of the disposable components used with the perfusion system are configured to be able to communicate set-up and/or operational parameters to the perfusion system. In some embodiments, the disclosure pertains to a blood level sensor that can be used to monitor a blood level or volume within a blood reservoir. The blood level sensor may be utilized in an integrated perfusion system in which the disposable components are configured, as noted above, to communicate with the perfusion system. In some embodiments, the blood level sensor may be utilized with a perfusion system lacking communication with disposables.
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Citations
20 Claims
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1. A perfusion system comprising:
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a heart lung machine; a blood reservoir adapted to hold a fluid, the blood reservoir having a volume determined by a geometric configuration, wherein the blood reservoir includes a communication device for communicating the geometric configuration to the heart lung machine; a blood level sensor secured to the blood reservoir, the level sensor configured to determine a fluid level within the blood reservoir; and a controller coupled to the heart lung machine, the controller configured to receive the fluid level and calculate a blood volume contained within the blood reservoir, based on the fluid level and the geometric configuration; wherein the heart lung machine is configured to adjust an operating parameter based on the calculated blood volume. - View Dependent Claims (2, 3, 4, 5, 6, 15)
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7. A blood reservoir system comprising:
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a blood reservoir configured to hold a blood volume, the blood reservoir including a wall; a capacitive sensor secured to the wall, the capacitive sensor configured to provide an electrical signal proportional to a level of blood within the blood reservoir; and a controller configured to receive the electrical signal from the capacitive sensor and output a signal indicative of a blood volume within the blood reservoir. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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16. A method of monitoring a blood volume within a blood reservoir, the method comprising:
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detecting a capacitance between first and second elongate electrodes disposed proximate a side wall of the blood reservoir, the capacitance being related to a level of blood within the blood reservoir; and calculating the blood volume within the blood reservoir in accordance with the detected capacitance and a known geometry of the blood reservoir. - View Dependent Claims (17, 18, 19, 20)
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Specification