Patent ID: 11866173
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A  B | IPC A  B

Claim 14:
15. A control method for a G tolerance improvement device, the G tolerance improvement device including a first electrode adapted to make contact with a head of a user and a second electrode adapted to make contact with the head or a neck of the user at a location different from the location where the first electrode is adapted to make contact, the control method comprising:
applying a voltage between a first application electrode and the second electrode, the first electrode comprising the first application electrode and a first measurement electrode, a part of the first measurement electrode being located on a curve, the curve connecting a center point of the first application electrode, which is adapted to make contact with the head, and a center point of the second electrode, which is adapted to make contact with the head or the neck, and being parallel to a surface of the head;
estimating a body fluid volume in a cranium of the user and a change amount of the body fluid volume in the cranium per unit time, based on impedance of the head between the first electrode and the second electrode; and
applying pressure to the neck of the user based on the estimated body fluid volume in the cranium and the estimated change amount of the body fluid volume in the cranium per unit time.