Patent ID: 7918798

Claim:
A bone examination apparatus for detecting bone density and loosening level of a hip joint, comprising: a shaking module, configured to be disposed close to a distal end of a femur of an examinee, for inputting a shaking signal to the distal end, wherein when detecting the bone density, the shaking signal generated by the shaking module is a shaking signal with a fixed frequency, when detecting the loosening level of the hip joint, the shaking signal generated by the shaking module is a chirp signal with a range of frequencies; a multi-mode ultrasonic detecting module, configured to be disposed close to a near end of the examinee's femur, for detecting the shaking signal from the near end of the examinee's femur and generating a detecting signal, wherein the multi-mode ultrasonic detecting module comprises an amplitude mode (A mode) detecting unit and a Doppler mode detecting unit, the amplitude mode (A mode) detecting unit detects a depth of the shaking signal in the near end of the examinee's femur, and the Doppler mode detecting unit detects the shaking signal with low frequency at the depth thereof; and a processing module, connecting to the shaking module and the multi-mode ultrasonic detecting module respectively, for wherein the processing module is configured to determine the bone density and the loosening level of a hip joint of the examinee in accordance with the shaking signal, the detecting signal, and a criterion.