Device for fragmenting tissue

摘要

The invention is directed to a device for fragmenting or homogenizing biological samples, comprising:
- a tubular laboratory test vessel (1) having an open first end (3) and a second end closed by a bottom (10);
- a closing lid (2) for the laboratory test vessel (1) connected to the open end (3) of the laboratory test vessel (1);
- a processing tool (5) arranged in said closing lid (2), comprising a plurality of teeth (4a-c) and an agitating element (11) having a guidance tube (13) that is rotatably mounted through a central bore in the lid (2) and includes an engagement portion (16) that is adapted to be engaged by a drive motor; wherein at least one outer cutting blade (6) is located at the periphery of the processing tool (5) and a transportation element (8) is arranged at the guidance tube (13) that extends outwardly in a helical shape over the outer cutting blade (6) and which is provided with slots (6a) fitting the outer cutting blades (6). Furthermore, the invention is directed to a process for extracting, fragmenting, mixing or homogenizing biological samples in a device according to any of the claims 1 to 12 wherein the agitating element (11) is rotated relative to the closing lid (2) and the processing tool (5), thereby guiding the transportation element (8) over at least one group of teeth (4 a-c) and at least one outer cutting blade (6) through slots (6a) of the transportation element (8) in a grinding and cutting manner.