Introduction to patents
Patent of concave-convex transforming vibrating diaphragm, patent number: 200520122864.7.
With a concave-convex design, this vibrating diaphragm can fully contact with area of auscultation even with minimal force on it, providing an exceptional performance of auscultation. When used with specially engineered sound-collecting cavity (patent number: 200520122862.8) it can produce high or low tunes with the same chest piece cover according to the force on it, providing doctors with more efficient diagnostic basis.

Patent of switch mechanism for sealed type multi-channel chest piece, patent number: 200620001001.9.
With sealed structures on the front and back, this switch mechanism can conduct sounds from vibrating diaphragm to the ears with no sound leakage and exceptionally clear performance of auscultation.

Patent of multi-purpose chest piece of stethoscope, patent number: 200520118435.2.
More than a common one-sided cardiac stethoscope, this product is equipped with a LED, a reflecting unit in 90ˇăto light source and an amplifying unit, making it suitable for inspection and diagnosis of ears, nose and throat. The top mounting of the switch of LED enables an easy control by users. The reflecting unit of light source can be readily rotated up to 360ˇăto produce a multiple view, offering more diagnostic basis.