Abstract: A first disclosure is a coil member wherein a lead wire is wound in oval shape, with an oval-shaped cross section being curved along a major-axis direction of the oval-shaped cross section and having a curvature axis in a direction parallel to a minor-axis direction of the oval-shaped cross section. A second disclosure is a contactless-type power transmission device provided with: a coil member as a first coil; a second coil; and a tilting shaft that makes variable, using the curvature axis as a rotating axis, an inclination between a central axis of the first coil, which is a rotational symmetry axis of the first coil, and a central axis of the second coil.

Abstract: A first disclosure is a coil member wherein a lead wire is wound in oval shape, with an oval-shaped cross section being curved along a major-axis direction of the oval-shaped cross section and having a curvature axis in a direction parallel to a minor-axis direction of the oval-shaped cross section. A second disclosure is a contactless-type power transmission device provided with: a coil member as a first coil; a second coil; and a tilting shaft that makes variable, using the curvature axis as a rotating axis, an inclination between a central axis of the first coil, which is a rotational symmetry axis of the first coil, and a central axis of the second coil.

Abstract: A medical ultrasonic generator having an ultrasonic radiator wound with coils connected to a high-frequency oscillator, when the radiator is provided with a sintered element consisting essentially of Ni--Zn having a thickness of 8 to 20 mm. The ferrite element can effectively apply the ultrasonic oscillation to a human body to improve the effect of medical treatment. Further, the medical ultrasonic generator is superior in terms of workability as a medical treatment because of its ability to effectively apply the ultrasonic oscillation to the affected part even through the clothing worn by a patient.