Systems and methods for monitoring an injection procedure

摘要

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.

主权项

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;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; andan optical sensor configured to generate a signal relating to whether the connector is in the open state or the closed state, wherein the optical sensor comprises a sensor housing, an emitter, and a detector, and the sensor housing is removably attachable to an exterior surface of the connector, and wherein the sensor housing comprises a flexible substrate configured to at least partially wrap around the connector and an adhesive layer to removably attach the sensor housing to the exterior surface of the connector.