Abstract: An archery broadhead (10) for mourning to an arrow shaft includes a ferrule (16), a plurality of replaceable blade elements (18) supported by and extending from the ferrule, an engaging bar 22 and a tip (20) mounted to the ferrule opposite the arrow shaft. The ferrule defines a centrally located cavity (48) and a plurality of ferrule slots (60) extending longitudinally along the ferrule and communicating with the blade elements. The blade elements are supported by the ferrule by engaging the blade elements within the ferrule slots and disposing the securing flanges of each within the ferrule cavity. The engaging bar is inserted within the ferrule cavity and disposed in engagement with the blade elements substantially along the length of the securing flanges of the blade elements to discourage movement of the blade elements with respect to the ferrule slots. The tip is secured to the ferrule to discourage axial movement of the blade elements with respect to the slots.

Abstract: A hydro-rotary vascular catheter for insertion in a body vessel comprises a tubular outer shell having a fluid-directing head rotatably mounted at its distal end. A plurality of outlet passages are formed about the circumference of the fluid-directing head, including a row of primary outlet passages formed near the base of the fluid-directing head and a row of secondary outlet passages formed forwardly of the primary outlet passages. The primary outlet passages are inclined radially and tangentially with respect to the shell to impart a tangential component of velocity to fluid exiting through the primary openings, while the secondary outlet openings are inclined axially in order to eject fluid in a primarily forward direction. A protective shield surrounds the primary openings to prevent the radially ejected fluid from rupturing the walls of the vessel, and to increase the turbulence of the exiting fluid.