Patent ID: 7501276

Claim:
An apparatus for manipulation of cell interiors of a plurality of biological cells ( 3 ), each cell having a cell membrane and being present in a culture medium ( 2 ), the apparatus comprising an object carrier ( 4 ) having at least one support area ( 5 ) and a plurality of poration tools ( 6 ) for opening the respective cell membranes, wherein the at least one support area ( 5 ) is capable of positioning the plurality of biological cells ( 3 ) to the plurality of poration tools ( 6 ) by adherence of the cells ( 3 ) to the support area ( 5 ) and the poration tools ( 6 ) are arranged as arrays within the support area ( 5 ) at a distance from an edge of the support area, such that the plurality of cells can be perforated, wherein each of the poration tools ( 6 ) comprises an electroporation electrode allocated to a reference electrode which can be brought into contact with the culture medium ( 2 ), and wherein the electroporation electrode and the reference electrode are connected with a source of electrical voltage for electroporating the cell membranes.