Abstract: An EKG electrode is disclosed including a conductive ring positioned around a jelled foam member which is positioned against a surface of a metal contact. The ring may be formed of a conductive medical grade plastic or may be formed by plating a non-conductive ring with a conducting metal.

Abstract: A circular EKG electrode has a plastic woven fabric body to which is attached a two-part connector. A jel impregnated disk is positioned over one part of the connector. The entire electrode is sealed in a disposable plastic package.

Abstract: An improved EKG electrode and package has a rectangularly shaped foam body member which is sealingly adhered to a first side of a plastic liner. A gelled foam disk is centrally attached to the same side of the foam body member. A plastic sealing cap covering the gelled disk is attached to the other side of the polyethylene liner material. An electrical contact is centered with respect to the disk and passes through the foam body member. The inventive method includes the steps of punching a centrally located hole in the foam body member, attaching an electrical contact through said hole, applying a foam disk to the body member, adjacent one side of the electrical contact, injecting gel into said disk, and sealingly applying a formed plastic cap over the gelled disk.

Abstract: A disposable biopsy needle, particularly for bone marrow biopsy sampling utilizing a metal cannula and stylet structure, and which otherwise may be formed from inexpensive material such as a suitable plastic. Suitable high production techniques, such as injection molding, may then be employed in the production of the remainder of the components of the structure, whereby the final product not only is of excellent design construction for the intended purpose, but also is of exceptionally low cost in manufacture, readily permitting its disposal following a single use.