Patent ID: 8303913

Claim:
A tissue processor for treating tissue samples, comprising: a process chamber configured to contain at least one liquid and to receive tissue samples for treating the tissue samples with the at least one liquid, the process chamber having a bottom, wherein the process chamber forms a vessel of a magnetic stirrer; a drive unit arranged on a side of the bottom facing away from the process chamber; and a stirring body arranged within the process chamber for stirring the liquid in the process chamber, wherein the stirring body is caused to rotate in a contact-free manner by the drive unit; a pin located in the bottom of the process chamber, wherein the stirring body further includes a hole having a center axis coinciding with the axis of rotation of the stirring body, the pin being arranged complimentary to the hole so that the stirring body is placed over the pin and at least a portion of the pin is received within the hole; wherein the stirring body includes at least one vane for stirring the liquid when the stirring body is rotated, wherein the stirring body further includes a first magnet having a north pole facing an underside of the stirring body and thus the drive unit, and a south pole facing away from the underside of the stirring body and thus away from the drive unit; and wherein the stirring body further includes at least a second magnet having a south pole facing the underside of the stirring body and thus the drive unit and a north pole facing away from the underside of the stirring body and thus away from the drive unit.