An adapter device for reducing or eliminating the potential bacterial contamination in a process of extraction or transfer of blood components from two or more containers to a recipient or any applicable destination, characterized in that it comprises: - a body provided with at least two sets of: a first area and a corresponding second area opposite to said first area, wherein each first area is capable of being approached or attached to a container and each corresponding second area is capable of remaining accessible to the exterior, and wherein said second area comprises an opening; a needle that projects from each first area and is configured to perforate the perforable area of a container, where the needle presents an inner tube in longitudinal alignment with said opening; an inner tube, extending from said opening to said inner tube of said needle, providing fluid communication between said opening to said inner tube of said needle; a perforable, sealing flexible part arranged blocking fluid communication between said opening and said inner tube of said needle through said inner tube of the body; wherein - the needles are arranged in a spaced-apart and parallel configuration, and present varying lengths for facilitating the simultaneous connection of the adapter device to at least two containers. - a body provided with at least two sets of: a first area and a corresponding second area opposite to said first area, wherein each first area is capable of being approached or attached to a container and each corresponding second area is capable of remaining accessible to the exterior, and wherein said second area comprises an opening; a needle that projects from each first area and is configured to perforate the perforable area of a container, where the needle presents an inner tube in longitudinal alignment with said opening; an inner tube, extending from said opening to said inner tube of said needle, providing fluid communication between said opening to said inner tube of said needle; a perforable, sealing flexible part arranged blocking fluid communication between said opening and said inner tube of said needle through said inner tube of the body; wherein a first area and a corresponding second area opposite to said first area, wherein each first area is capable of being approached or attached to a container and each corresponding second area is capable of remaining accessible to the exterior, and wherein said second area comprises an opening; a needle that projects from each first area and is configured to perforate the perforable area of a container, where the needle presents an inner tube in longitudinal alignment with said opening; an inner tube, extending from said opening to said inner tube of said needle, providing fluid communication between said opening to said inner tube of said needle; a perforable, sealing flexible part arranged blocking fluid communication between said opening and said inner tube of said needle through said inner tube of the body; wherein - the needles are arranged in a spaced-apart and parallel configuration, and present varying lengths for facilitating the simultaneous connection of the adapter device to at least two containers.