| 摘要 |
Centrifugal deflection device intended to be fitted to a surgical or dental handpiece (1) to prevent the penetration of foreign matter that results from an operation, said centrifugal deflection device including a ring (10; 10″1) coupled in rotation either directly or via a tool shank (6) to a drive shaft (8) of the handpiece (1). This device is characterized in that the ring (10, 10″) is covered by a sleeve (12; 12″) secured to the front end of the body (22) of the handpiece (1) and which, with the ring (10; 10″), delimits an ejection chamber (11; 11″). The ejection chamber (11; 11″) includes an inlet that communicates with a rear area of the handpiece and an outlet that communicates with the external environment, the ring (10; 10″) having a first diameter (D1; D1″) at the outlet of the ejection chamber (11; 11″) and a second diameter at the inlet of the ejection chamber (11; 11″), the first diameter of the ring (10; 10″) being larger than the second diameter of the ring (10; 10″).
|
