Patent ID: 7850913

Claim:
An apparatus for performing a paraffin-penetration treatment, in which a dehydrated and degreased tissue preparation is immersed in molten paraffin so as to allow the paraffin to penetrate into the tissue preparation before embedding the tissue preparation in the paraffin, said apparatus, which is used in a process of producing the tissue preparation for microscopic observation, comprising: penetration means for immersing the tissue preparation in the molten paraffin so as to allow the paraffin to penetrate into the tissue preparation; solidification means for cooling and solidifying the paraffin, which has been allowed to penetrate into the tissue preparation by said penetration means; and a controller for controlling said penetration means and said solidification means so as to perform a solidification treatment, in which the tissue preparation is cooled and the molten paraffin which has been penetrated inside the tissue is solidified, and to perform a melting treatment, in which the tissue preparation is immersed in the molten paraffin again so as to melt the solidified paraffin having penetrated into the tissue preparation, wherein said solidification treatment and said melting treatment are conducted at least once for one tissue preparation.