How does the ultrasonic transducer work?

Ultrasonic transducer itself is not an energy generator, it is only an energy converter, which converts electrical energy into mechanical energy. On the premise of good matching between output and input, it can convert a large amount of energy. A high AC voltage is applied to the transducer through the drive circuit to charge and discharge the capacitance of the transducer. The piezoelectric ceramic sheet expands and contracts simultaneously under the action of an alternating electric field, generating longitudinal mechanical vibration and expanding at the conduction axis node. The maximum bite force of the cutter head can reach 55.5khz high-frequency vibration. The cutter head contacts with tissue protein, breaks the hydrogen bond of the protein, recombines the protein structure,

Application of transducer in medical field

Ultrasonic transducers are widely used in the medical industry and constantly improved. From diagnostic tests that allow parents to see a newborn's heartbeat for the first time to surgical devices that can treat rare cancers, ultrasound transducers play a key role in today's health care.

The piezoelectric transducer generates ultrasonic waves because the material used to make the transducer vibrates when an AC voltage is applied. This vibration generates very high frequency pressure waves; The rate is 10 MHz or higher. In order to generate ultrasound at these frequencies, most medical applications of ultrasound use lead zirconate titanate ceramics (PZT). These same materials can also work in reverse to detect ultrasonic waves and convert the energy of these waves into electrical signals.

The most common use of ultrasonic transducer in medical field is ultrasonic imaging. The echo time of the ultrasonic wave and the Doppler shift of the reflected sound are used to create an image to determine the distance to the target internal organ and its motion.

Another increasingly widespread application of ultrasound is ultrasound surgery. Ultrasound surgery is minimally invasive and accurate enough to allow surgeons to remove lesions or damaged tissues without affecting the surrounding area. This will lead to a faster recovery time and improve the treatment effect of patients.

Working principle of medical ultrasonic transducer

Ultrasonic transducer is a very important core component in medical ultrasonic system. It uses piezoelectric wafer to realize the conversion of acoustic and electrical signals, and converts the electrical signals of the system into ultrasonic waves. The transducer probes have piezoelectric crystals that change shape when current is applied to them. Vibration or shape change will generate sound waves that move outward. When they are pointed at the human body, they pass directly through the skin into the internal anatomy.

Application of transducer in medical field

Ultrasonic transducers are widely used in the medical industry and constantly improved. From diagnostic tests that allow parents to see a newborn's heartbeat for the first time to surgical devices that can treat rare cancers, ultrasound transducers play a key role in today's health care.

The piezoelectric transducer generates ultrasonic waves because the material used to make the transducer vibrates when an AC voltage is applied. This vibration generates very high frequency pressure waves; The rate is 10 MHz or higher. In order to generate ultrasound at these frequencies, most medical applications of ultrasound use lead zirconate titanate ceramics (PZT). These same materials can also work in reverse to detect ultrasonic waves and convert the energy of these waves into electrical signals.

The most common use of ultrasonic transducer in medical field is ultrasonic imaging. The echo time of the ultrasonic wave and the Doppler shift of the reflected sound are used to create an image to determine the distance to the target internal organ and its motion.

Another increasingly widespread application of ultrasound is ultrasound surgery. Ultrasound surgery is minimally invasive and accurate enough to allow surgeons to remove lesions or damaged tissues without affecting the surrounding area. This will lead to a faster recovery time and improve the treatment effect of patients.