Pressure sensors have been used in the medical industry for a long time. Pressure sensors have been considered for applications in the medical industry when they were born. In recent years, as the performance of pressure sensors has been further improved, their applications in the medical industry have also been very good. development of. As pressure sensors use new technologies and new materials, their performance and stability are better developed, and the development of pressure sensors in the medical industry will also be further improved. Now countries are investing a lot of manpower and funds to open up and develop medical services. Pressure Sensor.
The important sensing element of the optical fiber pressure sensor is the Fabry-Bilot (FP) optical interferometer. The two mirrors of the interferometer are the inner surface of the film at one end and the fiber tip at the other end. The applied pressure P causes a deviation of the membrane, and this deviation is directly converted into a change in the cavity length of the FP interferometer. In order to obtain the linear relationship between the membrane deflection and the applied pressure, the shape and material of the sensor are strictly selected. The system can be expressed as: Lcav(P)=L0+(P-P0S)
Notes on the operation of cleaning the optical fiber pressure sensor:
Prohibited matters:
1. Do not wipe the top of the sensor, and stop at almost 1 inch (2.5cm) close to the top of the sensor. At all times, you must pay attention to the position of the catheter, and be careful when operating and be gentle and gentle. The most important thing is, except for lens cleaning paper, do not use any other objects to touch the top of the sensor.
2. Do not immerse the entire sensor in liquid, as this will damage the optical fiber connector of the catheter and cause the warranty to be invalid.
3. Do not immerse a joint (located between the transparent and amber areas) inside the catheter in liquid to avoid liquid infiltration.
4. When stirring, do not bump the sensor or hit the bottom or inner wall of the solution dish.
General notes:
1. Avoid sharp bend radius (>50mm) of optical fiber cable.
2. Avoid pulling, squeezing or twisting the optical fiber cable. Do not pull when trying to untie the twisted optical fiber cable. At this time, you need to be patient and carefully untie it.
3. When removing the catheter from the optical fiber signal demodulator, please use a protective cover to protect the optical fiber connector.
4. Failure to clean in time or not as required after use may invalidate the catheter warranty.
5. Do not insert any brush or foam cleaner to clean the gel on the top of the sensor, otherwise it will damage the sensor membrane.
6. Delayed cleaning will significantly affect cleaning efficiency.
To sum up, the optical fiber pressure sensor must be cleaned and sloppy. It must be operated step by step in accordance with the regulations. Otherwise, if there is a mistake, the detection effect will not be a small matter. Finally, I recommend a fiber optic sensor that can be applied to implantable intracardiac pressure monitoring devices, that is, the fiber optic pressure sensor imported from abroad by Gongcai.com. The FOP-M260 fiber optic pressure sensor is designed for the medical field. The small size, high-precision sensor. Completely anti-electromagnetic interference and completely intrinsically safe to the human body. It is widely used in medical fields such as cardiovascular, gastroenterology and pharmacology.