Patent ID: 6980853

Claim:
A deep-vein thrombosis determination apparatus comprising a plurality of electrodes, a current supply unit, a voltage measuring unit, an arithmetic operation unit, a storage unit, a determination unit and an informing unit, wherein said plurality of electrodes includes current supply electrodes and voltage measuring electrodes to be installed in contact with both feet of a subject's body; said current supply unit supplies an alternating current between said current supply electrodes; said voltage measuring unit measures a voltage between said voltage measuring electrodes; said arithmetic operation unit uses said plurality of electrodes, said current supply unit and said voltage measuring unit to execute an arithmetic operation on the bioelectric impedance value at least two times, one before and one after a change in a subject's body orientation, and to execute an arithmetic operation on a variation of the measured bioelectric impedance values; said storage unit stores a reference value; said determination unit determines whether or not the subject has a constitution apt to develop the deep-vein thrombosis in a region of lower limb based on a comparison between the calculated variation of the bioelectric impedance value and the reference value stored in the storage unit; and said informing unit informs the subject of a determined result and provides an advice relating to a method for preventing the development of the deep-vein thrombosis in a region of lower limb; said apparatus further comprising an input device, wherein said input device is used to input a relevance degree of subject to respective factors involved in a deep-vein thrombosis in a region of lower limb; and said determination unit modifies the reference value to be used in a determination based on the input relevance degree of subject.