Patent ID: 8100854
Filing Date: 2012-01-24
Classification: A61M,F16K

Abstract:
1. A breast shield set for pumping off human breast milk, the breast shield set comprising a breast shield, a breast shield connector with a threaded attachment for connection to a milk collection vessel, and a valve for limiting a dead volume during pumping off of breast milk, wherein the valve has a valve seat and a valve body with a circular diaphragm, the valve body being arranged over the valve seat and closing the valve seat sealingly when it bears on said valve seat, and the valve seat and valve body having openings which are offset relative to one another and which form a free passage when the diaphragm of the valve body lifts, wherein said openings of the diaphragm of the valve body comprise narrow elongate openings with a long dimension and which are uniformly distributed adjacent the periphery of the diaphragm, and wherein the narrow elongate openings are separated from one another by webs, the diaphragm being designed to be weaker in the area adjacent to these webs and wherein said openings of the diaphragm further comprise compact openings which are present in areas generally between said narrow elongate openings, with said compact openings being smaller than said narrow elongate openings and having a T-shaped configuration comprising a foot and a bar extending transversely over the foot, the bar extending adjacent said periphery and the foot being oriented toward the webs and radially toward a center point of the circle of the diaphragm.