Patent ID: 8357339

Claim:
A device for decantation deposition of cells on an analysis plate ( 1 ), said cells being contained in a cell suspension ( 4 ) comprising a cell preservation liquid, said suspension being poured into a reception chamber ( 5 ) comprising a body ( 10 ) having a wall with an uppermost surface and a lowermost surface, the reception chamber ( 5 ) placed above the analysis plate ( 1 ) and the bottom ( 6 ) of said reception chamber is open and extends opposite a cell deposition area ( 7 ) of the analysis plate ( 1 ), the bottom ( 6 ) of the reception chamber ( 5 ) being in fluid communication with a layer of an absorption material means ( 14 ) for the preservation liquid in order to absorb the preservation liquid gradually and permit homogeneous decantation deposition of the cells onto the cell deposition area ( 7 ) of the analysis plate ( 1 ), the absorption material means ( 14 ) being disposed about the cell deposition area ( 7 ), and the bottom ( 6 ) of the reception chamber ( 5 ) being set at a distance from the analysis plate ( 1 ) in order to delimit, between the reception chamber ( 5 ) and the analysis plate ( 1 ), a path for fluid communication between the reception chamber ( 5 ) and the absorption material means ( 14 ), wherein the layer of the absorption material means ( 14 ) comprises i) a compressed area ( 16 ) of a first material, in which the absorption material ( 14 ) is compressed, said compressed area ( 16 ) being located between said lowermost surface of said wall of the body and a corresponding upper surface of said analysis plate ( 1 ), said compressed area ( 16 ) extending between the bottom ( 6 ) of the reception chamber ( 5 ) and the analysis plate ( 1 ) about the cell deposition area ( 7 ), and ii) a laterally adjoining uncompressed area ( 17 ) of the first material, in which the absorption material means ( 14 ) is not compressed relative to said compressed area, said uncompressed area ( 16 ) being located extending up from the upper surface of said analysis plate ( 1 ) pass the lowermost surface and upward next to said wall of the body, said uncompressed area ( 17 ) extending laterally about the compressed area ( 16 ), beyond the bottom ( 6 ) of the reception chamber ( 5 ) in relation to the cell deposition area ( 7 ); and wherein the layer of absorption material means ( 14 ) in the compressed area ( 16 ) exhibits a first density of the first material greater than a second density of the first material in the uncompressed area ( 17 ).