Replaceable blade for microtome and means for keeping sliced...

G - Physics – 01 – N

Patent

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Details

G01N 1/06 (2006.01)

Patent

CA 2679541

A means used for a replaceable blade or knife in a microtome to keep a sliced specimen against curling has a first plate laid to overlap on top of the replaceable blade and another plate joined with the first plate to extend ahead of a cutting edge of the blade in a direction of blade travel to keep the sliced specimen against curling as well as any operator against injury. Between the overlap plate over the replaceable blade and another plate to keep the specimen against curling, a slit to expose the cutting edge of the blade lying under the overlap plate is made lengthwise of the overlap plate in geometry crossing the blade travel. Thus, not only the sliced specimen of thin section is kept against curling which whirls around, but also any fingers of the operator are protected from accidental injury. Instant inspection of the sliced specimen of thin section can be easily performed with the aid of the present curling-prevention means for the replaceable blade simple in construction.

La présente invention concerne un dispositif pour lame ou instrument tranchant de microtome permettant d'éviter l'enroulement d'une coupe de spécimen. Ledit dispositif comprend une première plaque disposée de façon à recouvrir partiellement la lame remplaçable, ainsi qu'une autre plaque reliée à la première plaque et se prolongeant au-delà d'un bord tranchant de la lame dans le sens du déplacement de la lame afin d'éviter un enroulement de la coupe de spécimen et de préserver l'opérateur contre toute blessure. Entre la plaque recouvrant partiellement la lame remplaçable et l'autre plaque évitant l'enroulement du spécimen, une fente destinée à laisser apparaître le bord tranchant de la lame disposée sous la plaque la recouvrant partiellement est pratiquée dans le sens de la longueur de la plaque recouvrant partiellement la lame, transversalement au déplacement de la lame. Ainsi, non seulement la coupe de spécimen de faible épaisseur est protégée contre l'enroulement, mais les doigts de l'opérateur sont également protégés contre une blessure accidentelle. Un examen instantané de la coupe de spécimen de faible épaisseur peut être facilement réalisé à l'aide du présent dispositif de prévention de l'enroulement pour lame remplaçable de construction simple.

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