Abstract: A medical pump device is constructed so that a pulsation force is applied to the blood in the vicinity of an artery, which is reconstructed after a bypassing operation has been completed, so as to compensate for a deviation of an actual wave form of a blood flow in the vicinity of the reconstructed artery from a normal wave form thereof. The medical pump device is capable of minimizing the possibility of occurrence of a late obturation in an artery which is reconstructed after a reconstruction operation has been completed, and improving a rate of keeping open the reconstructed artery.

Abstract: A medical electrode device comprises a flexible bag-like member which is formed on the side in direct contact with a living body and to and from which is charged and discharged a cooling medium, and a flexible electrode secured to the bag-like member, wherein an inner surface of the flexible bag-like member is at least partially joined to the other opposing inner surface of the bag-like member to each other so as to form a partitioned flow channel for the cooling medium in the inside of the bag-like member. The medical electrode device, when applied to the surface of a living body with a small radius of curvature, can be in an intimate contact with the living body without disturbing the distribution of the electric field, can attain a satisfactory cooling effect due to the use of a direct cooling system and the uniform flow distribution of water through the partitioned flow channel, and can perform efficient warming of the targeted lesion in the living body.

Abstract: A device for radio-frequency hyperthermia havinga first electrode adapted to be disposed in a tract organ of a living body.A second electrode is provided which is adapted to be disposed on an outer circumference of the living body such that the second electrode is opposed to the first electrode such that there is generated a spatially inhomogeneous electric field within the living body in cooperation with the first electrode so that a part of the living body near the first electrode may be heated more strongly than a part of the living body near the second electrode.This serves to selectively heat a tumor or malignancy region at the deep inside of the living body by a noninvasive technique.

Abstract: In the method of and apparatus for measuring the electrophoretic mobility, the electrophoretic mobility for the particles in a test sample is determined by measuring the apparent electrophoretic mobility at the positions for each of a plurality of different particles contained in the test sample moving under the electric field, and substituting the position for the stationary plane at which the flow velocity due to electroosmotic effect is zero into the theoretical curve (M(x)=-FX.sup.2 +AX+B based on the measured data.