| 摘要 |
FIELD: medical equipment. SUBSTANCE: massage tool has a working head. The working head is a ball segment with the outer radius of curvature R 38-40 mm. The segment height h is 0.75R, and the tool rod is a circular cylinder. One end of the cylinder mates the ball segment base at the outer radius R', and the other end is a smaller ball segment whose outer radius of curvature Ris 12-20 mm. The effective depth is 1-2 cm. EFFECT: higher massage efficacy. |
