| 摘要 |
A horn (1) used in an ultrasonic surgical operating instrument for crushing and removing organic tissue comprises a horn body (10) vibrated by ultrasonic vibration source for crushing the organic tissue, a removing passage (20, 21, 22, 23) extending through the horn body, through which the crushed tissue is removed outside, a bulkhead (30) disposed in the removing passage, and at least one through hole (31, 32, 33, 34, 35, 36) formed in the bulkhead. The bulkhead and the hole cooperate with each other to reduce a cross-sectional area the removing passage. |
