Ultrasonic scalpels manufacturing enterprises to break out in the industry in the leader of the industry, must be able to choose a stable energy output, precise control and good reliability, durability of the transducer for the matching, to develop the market with technical strength, is a lasting solution.
Ultrasonic transducer for scalpel : fine in the millimetre, specially for ultrasonic scalpels
Ultrasonic scalpel handle is the use of ultrasonic transducer piezoelectric material in the inverse piezoelectric effect, in the piezoelectric oscillator at both ends of the application of positive and negative voltage, the piezoelectric oscillator polarisation, in the longitudinal direction to produce deformation, so as to convert electrical energy into mechanical energy, to achieve high-frequency vibration. The ultrasonic transducer independently developed by AUDIOWELL is a special piezoelectric transducer specially made for ultrasonic scalpels. The ultrasonic frequency emitted by the product is stable and easy to control, and its D33 coefficient is large with high amplitude; the product has high Qm value, high energy conversion rate and long life, which provides a good hardware foundation for the ultrasonic knife to achieve precise cutting and rapid blood coagulation with low heat and safety.
Stable and easy to control ultrasonic frequency
With a resonance frequency of 100 kHz, the ultrasonic transducer for scalpel generates ultrasound at a stable frequency and is easy to control. Due to the high Qm value of the transducer, the product shows a narrow bandwidth and sharp peaks in the frequency response , which means that the transducer has a better sensitivity and selectivity for signals of specific frequencies, and can effectively filter out signals at non-target frequencies, which helps the user to accurately control the frequency of ultrasound waves, and improves the accuracy and safety of ultrasonic scalpel use.
Larger D33 coefficient, larger amplitude
With piezoelectric ceramics as the core material of ultrasonic transducer for scalpel D33 coefficient (i.e., longitudinal piezoelectric strain constant) is larger, in the same electric field, the product can produce a larger mechanical deformation, more effective conversion of electrical energy into mechanical energy, thus generating a larger vibration, i.e., the amplitude of vibration is correspondingly larger.
The size of the vibration amplitude is directly related to the size of the acoustic output power. Acoustic output power refers to the size of the energy of the sound wave emitted by the transducer, the larger the vibration amplitude, the stronger the energy of the sound wave emitted, and therefore the greater the acoustic output power, which means that the electrical energy is effectively converted into acoustic energy, the energy in the process of conversion of the loss of less energy, energy conversion efficiency is higher.
High Qm value, high energy conversion efficiency, and long service life
AUDIOWELL's ultrasonic transducer for scalpel has high Qm value (i.e. mechanical quality factor, the ratio of the mechanical energy stored in the oscillator at resonance to the energy lost by the oscillator every week of resonance), low impedance, low energy conversion loss, high conversion efficiency, and the product generates less heat, which is in line with the demand of ultrasonic knife for low-heat blood coagulation.
At the same time, the product produces lower heat helps to reduce material fatigue and aging, thus extending the life of the transducer, so the transducer piece even if used for a long time can maintain good, stable quality performance, effectively reducing the frequency of replacement of the internal components of the ultrasonic knife and maintenance costs.
The role of the ultrasonic transducer in energy conversion in ultrasonic scalpel
Precision cutting with high frequency vibration
As one of the core components of the ultrasonic scalpel, the transducer of the hemostat cutter uses the high frequency vibration of ultrasound to cut tissues. Since ultrasound has a directionality, its vibration energy can be concentrated in the head of the scalpel to cut off the bond between the tissue cells, thus realize precise cutting. Since the frequency of ultrasound is much higher than the audible range of the human ear, it does not produce noise during the procedure, which fundamentally eliminates the interference of noise on the surgical process, and at the same time reduces tissue damage and surgical trauma.
Rapid coagulation with low heat safety
The thermal effect produced by ultrasound waves as they propagate through the tissues contributes to intraoperative coagulation, helping to stop bleeding and seal small blood vessels, reducing bleeding during surgery and thus reducing surgical risk. At the same time, since the thermal effect produced by ultrasound is limited to the local area, it can reduce other areas of tissue damage and inflammatory reactions, lowering the risk of infection and contributing to the patient's rapid recovery after surgery.
Compared to other types of transducers, cutting hemostat transducers that work with the inverse piezoelectric effect produce a lower thermal effect when converting energy, avoiding the problem of excessively high temperatures that may cause damage to the patient's tissues and reducing the risk of complications during the procedure.
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