Device and method for delivery of a physiologically active substance depending on a measured physiological parameter
First Claim
1. A device for delivery of a physiologically active substance depending on a measured physiological parameter, the device comprising:
- a container for a perfusion fluid containing the physiologically active substance,a unit for delivery of the perfusion fluid containing the physiologically active substance into the body,a sensor for measuring the physiological parameter of the body by an analysis of the perfusion fluid after an at least partial equilibration of the perfusion fluid with a body fluid,a unit, which is connected to the sensor by a signal line, for controlling the quantity of the physiologically active substance to be delivered depending on the measured physiological parameter,a unit for calibrating the measurement of the physiological parameter,wherein the sensor for measuring the physiological parameter is combined with the unit for delivery of the perfusion fluid containing the physiologically active substance in such a way that a location of the measurement of the body fluid for determining the physiological parameter in the body is in an area of influence of the delivered physiologically active substance, so that the measurement of the physiological parameter occurs essentially at the location of the delivery of the physiologically active substance, andwherein the unit for calibrating the measurement of the physiological parameter is formed by a unit for measuring the conductivity of the perfusion fluid after an at least partial equilibration of the perfusion fluid with the body fluid.
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Accused Products
Abstract
A device for delivery of glucose-regulating medication, particularly insulin, depending on the measured tissue glucose concentration, having a sensor for measuring the glucose concentration in tissue fluid, possibly a unit for removing fluid from subcutaneous tissue, as well as a container for the glucose-regulating medications, having a unit for subcutaneous delivery of the glucose-regulating medications, and having a unit connected to the glucose sensor for regulating the quantity of the glucose-regulating medication to be delivered depending on the measured tissue glucose concentrations. The device simulates the function of the natural pancreas and is constructed small and compact. The sensor for measuring the tissue glucose concentration or the unit for removing the tissue fluid is combined with the delivery unit for subcutaneous delivery of the glucose-regulating medication, particularly in a shared catheter, so that the measurement of the tissue glucose concentration is essentially performed at the location of the delivery of the glucose-regulating medication.
21 Citations
30 Claims
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1. A device for delivery of a physiologically active substance depending on a measured physiological parameter, the device comprising:
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a container for a perfusion fluid containing the physiologically active substance, a unit for delivery of the perfusion fluid containing the physiologically active substance into the body, a sensor for measuring the physiological parameter of the body by an analysis of the perfusion fluid after an at least partial equilibration of the perfusion fluid with a body fluid, a unit, which is connected to the sensor by a signal line, for controlling the quantity of the physiologically active substance to be delivered depending on the measured physiological parameter, a unit for calibrating the measurement of the physiological parameter, wherein the sensor for measuring the physiological parameter is combined with the unit for delivery of the perfusion fluid containing the physiologically active substance in such a way that a location of the measurement of the body fluid for determining the physiological parameter in the body is in an area of influence of the delivered physiologically active substance, so that the measurement of the physiological parameter occurs essentially at the location of the delivery of the physiologically active substance, and wherein the unit for calibrating the measurement of the physiological parameter is formed by a unit for measuring the conductivity of the perfusion fluid after an at least partial equilibration of the perfusion fluid with the body fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for the delivery of a physiologically active substance depending on a measured physiological parameter, the method comprising:
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delivering a perfusion fluid containing the physiologically active substance into a body, measuring the physiological parameter of the body in such a way that a location of measurement of the body fluid for determining the physiological parameter in the body is in an area of influence of the delivered physiologically active substance by an analysis of the perfusion fluid after an at least partial equilibration of the perfusion fluid with a body fluid, and controlling the quantity of the physiologically active substance delivered depending on the measured physiological parameter by way of a sensor and a signal line, wherein the physiological parameter is measured essentially at the location at which the physiologically active substance is delivered. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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Specification