MULTI-SENSOR LESION ASSESSMENT DEVICE AND METHOD

摘要

An intravascular sensor delivery device can have a sensor that is used to measure a physiological parameter of a patient, such as blood pressure, within a vascular structure or passage. In some embodiments, the device can be used in combination with a medical guidewire carrying another sensor also configured to measure a physiological parameter of the patient, such as blood pressure. Data generated from the intravascular sensor delivery device sensor and the guidewire sensor can be used to determine a characteristic of interest for the vascular structure under investigation. For example, the data can be used to calculate a pressure distal to pressure proximal ratio across a stenotic lesion in order to assess the severity of the lesion.

主权项

1. A method comprising:
positioning a sensor carried by a guidewire distally of a location of interest in a patient; advancing a sensor delivery device over the guidewire and positioning a sensor of the sensor delivery device proximal to the location of interest in the patient; and comparing a signal generated by the sensor carried by the guidewire to a signal generated by the sensor of the sensor delivery device and determining therefrom a characteristic of the location of interest.