| 摘要 |
FIELD: medical equipment. SUBSTANCE: device has two active bodies all-in-one and detachable. Each body is formed by its base and protuberances separated by recesses. The bodies have a through or closed central space, and the second body is concentric in the first body in its central space. The protuberances of each body may be attached to or detached from the bases, and they are mounted for axial as well as radial and angular movement. EFFECT: wider range of operating characteristics. 7 dwg |
