PHYSIOLOGICAL SENSOR DELIVERY DEVICE AND METHOD

摘要

An intravascular sensor delivery device for measuring a physiological
parameter of a
patient, such as blood pressure, within a vascular structure or passage. In
some
embodiments, the device can be used to measure the pressure gradient across a
stenotic
lesion or heart valve. For example, such a device may be used to measure
fractional flow
reserve (FFR) across a stenotic lesion in order to assess the severity of the
lesion. The
sensor delivery device has a distal sleeve configured to pass or slide over a
standard
medical guidewire. Some distance back from the sensor and distal sleeve, the
device
separates from the guidewire to permit independent control of the sensor
delivery device
and the guidewire. The sensor delivery device can be sized to pass over
different sizes of
guidewires to enable usage in coronary and peripheral arteries, for example.