SYSTEMS AND METHODS FOR MONITORING AN INJECTION PROCEDURE
First Claim
1. A sensor assembly comprising:
- a connector comprising;
a first end configured to be coupled to an injection device configured to inject a fluid;
a second end configured to be coupled to tubing configured to deliver the fluid to a patient such that the connector, when coupled, is between the tubing and the injection device;
a lumen extending from the first end to the second end; and
a valve assembly configured to enable flow of the fluid through the lumen when the connector is in an open state and to reduce flow of the fluid through the lumen when the connector is in a closed state; and
a sensor disposed proximate to the connector and configured to generate a signal relating to whether the connector is in the open state or the closed state.
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Accused Products
Abstract
An indicator dilution system includes a catheter configured to deliver an indicator to a patient, an injection device configured to deliver the indicator to the catheter, and a connector coupling the injection device to the catheter. The system also includes one or more sensors configured to acquire measurements from components of the system, which may be used to determine the start and end time of the injection of the indicator to the patient. For example, the one or more sensors may be configured to acquire signals relating to a state of the connector, which may be used to determine whether the connector is in an open state to enable flow of the indicator or in a closed state to reduce flow of the indicator.
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Citations
20 Claims
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1. A sensor assembly comprising:
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a connector comprising; a first end configured to be coupled to an injection device configured to inject a fluid; a second end configured to be coupled to tubing configured to deliver the fluid to a patient such that the connector, when coupled, is between the tubing and the injection device; a lumen extending from the first end to the second end; and a valve assembly configured to enable flow of the fluid through the lumen when the connector is in an open state and to reduce flow of the fluid through the lumen when the connector is in a closed state; and a sensor disposed proximate to the connector and configured to generate a signal relating to whether the connector is in the open state or the closed state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system comprising:
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a connector configured to interface between an injection device configured to inject a fluid and a catheter configured to deliver the fluid to a patient, wherein the connector comprises; a lumen extending from a first end of the connector to a second end of the connector; and a valve assembly configured to enable flow of the fluid through the lumen when the connector is in an open state and to reduce flow of the fluid through the lumen when the connector is in a closed state; a sensor disposed proximate to the connector and configured to generate a signal relating to the state of the connector; and a monitor comprising a processor configured to receive the signal from the sensor and to determine a start time and an end time of an injection procedure based at least in part upon the signal, wherein the start time of the injection is based at least in part upon a determination that the connector is in the open state and the end time of the injection is based at least in part upon a determination that the connector is in the closed state. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method comprising:
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using a processor to; receive two or more signals from a sensor indicative of a state of a valve assembly, wherein the state of the valve assembly comprises an open state or a closed state; determine whether the valve assembly is in the open or closed state based at least in part upon the received signals; determine a start time of an injection procedure based at least in part upon the determination that the valve assembly is in the open state; and determine an end time of the injection procedure based at least in part upon the determination that the open state of the valve assembly is followed by the closed state.
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19. The method of claim 19, wherein determining the start time of the injection procedure comprises using the processor to:
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receive a baseline signal from the sensor prior to the injection procedure; determine that the valve assembly is in the closed position based at least in part upon the baseline signal; and determine that the valve assembly is in the open position based at least in part upon a second signal from the sensor, wherein the second signal is received after the baseline signal. - View Dependent Claims (20)
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Specification