Abstract: In a hypodermic needle having an end that attaches to a syringe, an elongated hollow shaft for passing fluid terminated at a sharpened point; the improvement comprising an electrically insulating layer positioned on the shaft and at least one electrically conductive area positioned on the insulating layer. The electrically conductive area being adapted to be connected to an electrical source. A method of determining when a hypodermic needle penetrates into tissue, vein, or lumen by providing an electrical source; connecting the electrical source electrically to a hypodermic needle designed to provide two electrically conducting portions, spaced apart from each other, and near a point on the hypodermic needle.

Abstract: In a hypodermic needle having an end that attaches to a syringe, an elongated hollow shaft for passing fluid terminated at a sharpened point; the improvement comprising an electrically insulating layer positioned on the shaft and at least one electrically conductive area positioned on the insulating layer. The electrically conductive area being adapted to be connected to an electrical source.

Abstract: A condom designed for oral-genital sex includes, in one aspect, a device adapted to be worn in the mouth of the person practicing oral sex. The device includes a tubular member having one closed end and formed of thin, pliant, impervious material. Joined to the open end of the tubular member are two or three flanges extending generally radially outwardly and spaced closely together. The flanges are curved out of a plane transverse to the axis of the tubular member to define a channel adapted to receive the upper and lower lips of an average person. The device is gripped by placing the lips within the channel, and closing the jaws slightly to compress and retain the open end of the device. The tubular member may be formed to extend into the mouth of the wearer, for the purpose of performing fellatio. A penis may be inserted into the tubular member without making contact with the lips or mouth or tongue of the wearer.