Application of Optical Fiber Pressure Sensor in Fractional Flow Reserve (FFR) System

With the acceleration of the aging of the population and the prevalence of unhealthy lifestyles, the incidence of cardiovascular diseases in China continues to rise. At present, there are 20 million patients with coronary heart disease in my country, and more than one million new patients are added every year. Fractional flow reserve (FFR) is a disease-specific physiological index that can determine the hemodynamic severity of coronary artery disease. FFR can accurately identify the lesions that cause ischemia. In many cases, imaging techniques may fail to detect these lesions or incorrectly evaluate them.

If the operator is unsure of the ischemic significance of the stenosis and whether PPCI should be performed to benefit the patient, the volume (FFR) should be measured. Various clinical studies have shown that the assessment of physiological lesions through FFR can guide conventional PCI to be superior to current angiography-guided treatment.
PCI, or percutaneous coronary intervention, is currently one of the most important methods for the treatment of coronary heart disease. With the continuous increase in the volume of PCI operations, the market demand for FFR will continue to rise. In the context of escalating medical and health needs, patients will choose more FFR testing to obtain the best treatment plan and improve the prognosis of surgery.
The Canadian FISO optical fiber pressure sensor-FOP-M260 represented by Shenzhen Gongcai.com, as a new type of sensor with obvious advantages, has been applied in various high, precise and sophisticated fields. Especially in the medical field, optical fiber sensors provide a brand-new method for the treatment of diseases due to their small size, precision, anti-electromagnetic interference and biological applicability.

The core of the FISO medical pressure sensor FOP-M260 is the Fabry-Perot standard cavity. Its structure is: two parallel mirrors on both sides of the transparent medium, and the distance between the mirrors is known to be equal to the length of the standard cavity. The wavelength of the reflection spectrum of the Fabry-Perot standard cavity has an obvious peak as a function of the cavity length that physically corresponds to the resonance of the standard cavity.
The FISO pressure sensor is a flexible application of the FP standard cavity. As shown below, the deformable film is mounted on the vacuum chamber to form a small drum structure. The bottom of the drum and the inner surface of the flexible membrane constitute the FP sensing cavity. When pressure is applied, the membrane dents toward the bottom of the drum, reducing the length of the cavity. After the NIST traceable calibration of the sensor in the factory, the length of the standard chamber will correspond to a very accurate pressure value. The design of the signal conditioner allows it to accurately determine the length of the cavity with sub-nanometer accuracy. In this way, the pressure sensor and signal conditioner form an extremely accurate and repeatable measurement system.

FISO Medical Pressure Sensor FOP-M260 Dimensions and Parameters Features:

Optical Fiber Pressure Sensor FOP-M260 Parameters: