| 摘要 |
PROBLEM TO BE SOLVED: To provide an intravascular sensor delivery device for measuring a physiological parameter of a patient, such as blood pressure, within a vascular structure or passage.SOLUTION: The device can be used to measure the pressure gradient across a stenotic lesion 236 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. A sensor delivery device 210 has a distal sleeve 220 configured to pass or slide over a standard medical guidewire 230. Some distance back from a sensor 240 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. |
