Boss Instruments, Ltd., Inc.

You Cann & Co., LLC

Sean W Higgins

Bruce S Ferris

Peter Fetzer

John Ryall

Ann Samenuk

A retractor system includes one or more blades, a handle, and a frame. The handle includes first and second arms with jaw portions and recesses configured to removably retain a blade. Both arms include rotatable connections and handles, where the rotatable connections are between jaw portions and handles. The rotatable connections are connected together such that the arms are rotatable with respect to one another. In one embodiment, the recesses are partial disc shapes opposed to one another, such that when the jaw portions are in a closed position, a disc-shaped space is present between the jaw portions in the closed position. The blade includes a corresponding disc-shape protrusion that may be retained in the recesses, and in some embodiments may include one or more notches to mate with a protrusion in a recess that prevents blade rotation while in the handle.

Handle for retractor blade

A rotatable arm is provided which provides an ability to rotate a working end of an instrument such as a surgical retractor. Rotation of a key hub transfers torque to a drive hub which causes an extension or retraction of a lead screw along a center axis of the rotating arm. The extension or retraction forces a drive pin to bear against sides of helical slots of a driven tip, producing a rotation of the driven tip along a pitch line of the helical slots. The driven tip is connected to the working end such that the two rotate together. The rotatable arm has a low profile, a non-reversible torque transmission, and may be hermetically sealed.

Rotating retractor arm

A dining plate includes a top portion with a substantially transparent window therein. The plate also includes a bottom portion with a bottom surface having a first outside receiving groove and second inside receiving groove. The bottom portion has a generally planar shape that corresponds generally to the shape of the top portion. The bottom portion also has a top surface with a continuous inner standing rib and an outward rim. The top and bottom portions are joined together so that the inner standing rib is releaseably positioned in the inside receiving groove and the outward rim is releaseably positioned in the outside receiving groove. A substantially watertight cavity is formed between a central section of each of the top and bottom portions. The cavity is aligned with the window in the top portion.

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Richmond, VA, United States of America

Sean W Higgins