Abstract: A cross-contamination free and multiple laboratory sample grinder is disclosed which includes: a controller unit having a motor and a controller unit; a tube receptacle unit, removably laid on top of the controller unit, comprising a plurality of compartments designed to contain a plurality of laboratory tubes; and a top housing unit, removably laid on top of the tube receptacle unit, comprising an array of pestles coupled to a gear system operated by that motor, wherein the top housing unit comprises a handle when rotated operable to eject the array of pestles into said plurality of laboratory tubes.

Abstract: The present invention provides a medical dressing article and a method of manufacturing the same, which comprises: (a) a first layer comprised of polycaprocaptone fibers having a PCL fiber diameter of 0.5 ?m and 2.9 ?m; (b) a second layer, deposited directly on the first layer, including a mixture of polycaprolactone and poloxamer fibers (PCL and POX fibers) wherein a PCL and POX fiber diameter is between 0.1 ?m and 4 ?m; and (c) a third layer, deposited directly on the second layer, further comprising a mixture of gelatin and silver nitrate (AgNO3).

Abstract: A cross-contamination free and efficient laboratory sample grinder is disclosed which includes: a first housing unit having a plurality of pestle ejecting pins arranged in a fixed position, a second housing unit containing a planetary gear system connected to operate an array of mortars and pestles, and a third housing unit containing a single motor and controllers; when the first housing unit is in lock position with the second housing unit, and a third housing unit containing a single motor and controllers. The first housing unit, the second housing unit, and the third housing unit are geometrically configured and dimensioned so that when they are stacked on top of one another they are in lock position and consequently the array of pestle ejecting pins are lined up with the plurality of pestle ejecting pins.