Zibo Yuhai Electronic Ceramic Co., Ltd.
Address : No.57 Chuangye Road, Development Area Boshan, Zibo City, Shandong Prov. P.R. of China
Tel : +86-0533-4230012
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Piezoelectric focus bowl HIFU parts -2/4/7MHZ

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Piezoelectric ceramic hemisphere Electrode direction: thickness directionApplications: High Intensity Focused Ultrasound, high power ultrasonic transducerHIFU high intensity focused ultrasound (HIFU) is a new technique of ultrasound surgery developed in the 1940s. It uses ultrasound as energy source, uses its penetration and focusing mode to focus the ultrasound energy on the SMAS layer of human body, forms a high sound intensity area in SMAS, which can penetrate into 3.0mm-4.5mm subcutaneously and make the temperature of SMAS tissue reach 65 degrees C within 0.5-1 seconds. Upper (the strongest temperature of all non-invasive skin-tightening instruments) results in collagen recombination in SMAS tissues without damaging normal tissues outside the focal area, thus achieving the effect of fascial elevation.Focused ultrasound system has good tissue penetration and localization. It can focus energy through surface tissue and target tissue at a specific depth to produce biological effects, which can make the pathological tissue recover quickly. The dosage of focused ultrasound therapy is easy to control and safe. After treatment, only local tissue has transient congestion and edema, and surface cells can remain intact, quick recovery.

Ultrasound focusing has good tissue penetration and energy storage. The host generates high-frequency electrical signals, which are converted into focused ultrasound by transducer. The ultrasound is transmitted to the lesion tissues by circulating water system, sound transmission membrane and contact coupling agent. Ultrasound can produce thermal effect, mechanical effect, cavitation effect and biochemical effect in biological tissues. Polaris uses these characteristics to act on pathological tissues to degenerate them, promote tissue reconstruction and improve microcirculation to achieve therapeutic purposes.

YUHAI piezo material for HIFU systerm:

Typical value of piezoelectric ceramic materials performance
"Hard" PZT materials
Properties			PZT-41	PZT-42	PZT-43	PZT-82
Dielectric Constant	ɛTr3		1050	1250	1420	1100

Coupling factor	KP		0.58	0.58	0.58	0.52
	K31		0.32	0.33	0.34	0.3
	K33		0.66	0.67	0.68	0.57
	Kt		0.48	0.48	0.48	0.4
Piezoelectric coefficient	d31	10-12m/v	-106	-124	-138	-100
	d33	10-12m/v	260	280	300	240
	g31	10-3vm/n	-11.4	-11.2	-11	-10.3
	g33	10-3vm/n	28	25.3	24	25
Frequency coefficients	Np		2280	2200	2160	2280
	N1		1671	1613	1583	1671
	N3		1950	1900	1875	1950
	Nt		2250	2200	2200	2300
Elastic compliance coefficient	Se11	10-12m2/n	11.8	12.7	13.2	11.6
Machanical quality factor	Qm		1000	800	600	1200

Dielectric loss factor	Tg δ	%	0.3	0.4	0.5	0.3
Density	ρ	g/cm3	7.5	7.5	7.5	7.6
Curie Temperature	Tc	°C	320	320	320	310
Young's modulus	YE11	<109N/m3	85	79	76	86
Poison Ratio			0.3	0.3	0.3	0.3