Abstract: The present invention provides a limb compression device, including: a main body having a first surface where a support portion wrapping around a portion of a limb is provided, and a second surface where a fixing shaft fixing a cuff wrapping around a remaining portion of the limb is mounted; a drive motor coupled to the main body; a reduction gear unit coupled to a drive shaft of the drive motor; a cuff fixing drum fixing the cuff, and having a first end coupled to the reduction gear unit and a second end coupled to the main body such that the cuff fixing drum winds and unwinds the cuff; and the cuff including a first end fixed to the cuff fixing drum and a second end wound around the fixing shaft via the support portion of the main body so as to wrap around the remaining portion of the limb.

Abstract: The present invention relates to an external counterpulsation system that senses biosignals to monitor a heart condition and performs external counterpulsation on the basis of the monitored heart condition. The external counterpulsation system includes: a compression device wrapping around limbs of a subject to compress or decompress the wrapped limbs; and a controller configured to calculate compression timing and decompression timing for the external counterpulsation by analyzing an electrocardiogram signal and a blood flow rate signal among the sensed biosignals, and control the compression device on the basis of the calculated compression timing and decompression timing.

Abstract: The present invention relates to an external counterpulsation system which senses a biosignal to monitor a heart condition and performs external counterpulsation in response to the monitored heart condition. The present invention comprises: a compression device surrounding limbs of a subject to compress the surrounded limbs or release the limbs from the compression; and a control device which controls the compression device to apply test compression to the limbs for a predetermined test period with predetermined test intensity before performing the external counterpulsation, configures personalized maximum compression intensity corresponding to the subject through the test compression, and controls the compression device to perform the external counterpulsation on the basis of the configured maximum compression intensity.

Abstract: The present invention discloses an (x-ray) bone densitometer comprising a stand including an “L”-shape handle consisting of an a horizontal and a vertical plate capable of rotating between an horizontal position and a vertical position on the horizontal plate, a handle groove, a first guide pin and a second guide pin, and a stand groove; and a housing including an opening formed perpendicular in the center of the upper part (of said housing), the opening having one or more of the first and the second guide grooves for guiding the movements of first and said second guide pins, a stand settle groove for settling the stand when the stand is settled horizontally, and a stand erecting groove for supporting the stand when the stand is erected in slope.

Abstract: The present invention discloses an (x-ray) bone densitometer comprising a stand including an “L”-shape handle consisted of an horizontal and a vertical plate capable of rotating between an horizontal position and a vertical position on the horizontal plate, a handle groove, the first and the second guide pins, and a stand groove; and a housing including an opening formed perpendicular in the center of the upper part (of said housing), the opening having one or more of the first and the second guide grooves for guiding the movements of said first and said second guide pins, a stand settle groove for settling the stand when the stand is settled horizontally, and a stand erecting groove for supporting the stand when the stand is erected in slope.

Abstract: A spherical wave formation method by superposition of a plurality of limited plane waves is provided, in which a plurality of sufficiently small elements in a linear transducer transmits a spherical wave according to a predetermined delay pattern to thereby form a plurality of limited plane waves, and then the plurality of the limited plane waves are superposed, to thereby form a large-sized spherical wave.

Abstract: A signal demodulation apparatus using a multi-ary sampling for beam formation of a received signal reduces a difference between a sampling point of time of an in-phase signal and a sampling point of time of a quadrature signal due to an existing secondary sampling method. Each of a plurality of analog-to-digital converters produces a first in-phase signal and at least two first quadrature signals adjacent to the first in-phase by sampling each input signal input via a plurality of channels at a sampling point of time having a sampling period of the input signal and other sampling points of time having a sampling interval smaller than the sampling period of the input signal. A quadrature component calculator of each channel produces second quadrature signals in which an error due to a difference between the sampling point of time of the first in-phase signal and the sampling points of time of the first quadrature signal is reduced.