| 摘要 |
<p>PCT No. PCT/FR94/00648 Sec. 371 Date Jan. 29, 1996 Sec. 102(e) Date Jan. 29, 1996 PCT Filed Jun. 2, 1994 PCT Pub. No. WO94/28390 PCT Pub. Date Dec. 8, 1994A microtome includes a suction system that is integral with a knife carrier, which opposes the rolling up of tissue sections upon themselves and ensures evacuation of waste sections immediately after their appearance in the region of the sectioning blade of the knife carrier. The knife carrier has a suction cavity that is arranged in the immediate vicinity of the sectioning blade and is connected to a source of vacuum or reduced pressure. A cover is pivotably mounted on the body of the knife carrier. The cover has a u-shaped cross section, opened downwards, and profiled to cover the suction cavity and partially cover the sectioning blade. The cover defines a narrow free space in a form of a channel extending parallel to the upper face of the body of the knife carrier to guide a flow of suctioning air exerted on the sections. A valve has a closed position and an opened position for regulating the flow of suctioning air through the narrow free space.</p> |
