Abstract: The embodiments disclosed herein are directed to a masking device (20) for enhancing the fidelity of sample wells of a photopolymerized electrophoretic gel contained in a gel casting assembly (10) that comprises a comb (30) having a one or more teeth. The masking device (20) includes a light blocking agent fixedly located on the gel casting assembly (10) where the light blocking agent overlaps with the teeth of the comb to prevent photopolymerization of a portion of an electrophoretic gel contained between the comb and the inner surfaces of the gel casting assembly. Upon removal of the comb after electrophoretic gel photopolymerization the sample wells remain uniform.

Abstract: The present invention is a handheld device used to deliver hyaluronic acid to the skin and is used in the dermatology field and as an aesthetic treatment. The present invention uses pressure to launch a hyaluronic acid mixture into the skin that is better tolerated and less painful than conventional hypodermic needle procedures. The present invention is a non-invasive tool that delivers hyaluronic acid into the skin through the use of pressure as opposed to a hypodermic needle, thereby significantly decreasing the likelihood of damage to the skin when compared to a hypodermic needle device.