Surgical instrument positioning device
First Claim
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1. A DEVICE FOR ACCURATELY POSITIONING A SURGICAL INSTRUMENT WITHIN A SKULL COMPRISING A HOLDER FOR THE INSTRUMENT, A PAIR OF ELONGATE RODS MOUNTED AT RIGHT ANGLES TO EACH OTHER AND DEFINING A PLANE, MEANS MOUNTING THE HOLDER ON ONE OF THE RODS, A BASE CONSISTING OF A FLAT RING AND AT LEAST THREE LEGS ATTACHED THERETO AND EXTENDING DOWNWARDLY THEREFROM AND A THREADABLE MEMBER PROJECTABLE INTO THE SKULL FOR FASTENING THE RING THERETO, A PAIR OF PIVOTS HAVING AXES EXTENDING AT RIGHT ANGLES TO EACH OTHER AND CONNECTED TO THE OTHER ROD, AND CLAMP MEANS INTERCONNECTING THE PIVOTS AND THE BASE.
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1. A DEVICE FOR ACCURATELY POSITIONING A SURGICAL INSTRUMENT WITHIN A SKULL COMPRISING A HOLDER FOR THE INSTRUMENT, A PAIR OF ELONGATE RODS MOUNTED AT RIGHT ANGLES TO EACH OTHER AND DEFINING A PLANE, MEANS MOUNTING THE HOLDER ON ONE OF THE RODS, A BASE CONSISTING OF A FLAT RING AND AT LEAST THREE LEGS ATTACHED THERETO AND EXTENDING DOWNWARDLY THEREFROM AND A THREADABLE MEMBER PROJECTABLE INTO THE SKULL FOR FASTENING THE RING THERETO, A PAIR OF PIVOTS HAVING AXES EXTENDING AT RIGHT ANGLES TO EACH OTHER AND CONNECTED TO THE OTHER ROD, AND CLAMP MEANS INTERCONNECTING THE PIVOTS AND THE BASE.
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