Microtome
AssigneeDosaka EM Co., Ltd.
InventorsIsao Tamura, Sumio Nakajima
Life of this patent
Estimating the term…
Abstract
Disclosed is an apparatus for cutting a specimen with a blade that moves forward with oscillation. The apparatus is free from vertical wobbling of the blade even after a long period of use, so that the cutting is carried out without killing cells present in the specimen. The blade is attached to a movable body that is coupled to a base with a resilient coupler. The base is provided with a driving electromagnet, and the movable body is provided with a permanent magnet. Thus, the movable body oscillates by supplying a control signal to the driving electromagnet.
Claims17
A microtome for cutting a thin slice from a specimen, comprising:
- a stage for fixedly placing the specimen thereon;
- a base arranged slidably relative to the stage;
- a movable body arranged to oscillate in a direction perpendicular to a direction in which the base slides;
- a cutting blade for cutting the specimen placed on the stage, the cutting blade being attached to the movable body at a forward part with respect to the sliding direction;
- a plurality of resilient couplers coupling the movable body to the base so as to allow for the oscillation;
- a first magnet made of an electromagnet and mounted on one of the base and the movable body;
- a control circuit for supplying an alternating signal to the first magnet;
- and
- a second magnet mounted on the other of the base and the movable body in opposed relation to the first magnet, the second magnet reacting to attraction and repulsion that is alternately resulting from an alternating field generated by the first magnet, so that the movable body is displaced against resilience of the resilient couplers in the direction perpendicular to the sliding direction, whereby the cutting blade oscillates,
- wherein by sliding the base forward relative to the stage, the cutting blade cuts into the specimen with oscillation so that the thin slice is cut from the specimen.
Dependencies are inferred from the claim text.