Abstract: A central venous catheter kit enables health care workers quickly and controllably gain ultrasound supported access to vascular tissue for catheterization. Ultrasound support requires gel for reducing acoustic impedance and reflectance loss, which gel is included in the kit, as well as at least two newly conceived devices, the first for gripping the guide wire in an otherwise gelled environment, and the second for marking the skin for proper needle localization. State of the art kit components are thus included in the kit, in addition to the scanning gel and the noted device(s). The devices each comprise certain finger- or digit-grippable structure, and textured surfacing for enhancing the frictional contact between the user's digits and the devices.

Abstract: An overhead rotary valve fitted into a cylinder head with diametrical polygonal openings formed therein for use in combination with an internal combustion engine, driven to bring intake and exhaust ports into and out of alignment with passages leading to and from the combustion chamber. Sleeve bearings are fitted in the cylinder head that provide surface sealing, and annular sealing members prevent the air/fuel mixture or exhaust gases from flowing into regions intermediate ports and individual cylinders. Utilizing this overhead rotary valve and associated seals and bearings increases the efficiency and performance of an internal combustion engine. The overhead rotary valve rotating, at one quarter the speed of the crankshaft, minimizes wear and noise levels, self cleans the ports, allows the engine to operate at higher rpm and imparts proper opening and closing of passages at the proper sequence of valve timing without concern of valve float.