Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Impact driven fastener – e.g. – nail – spike – tack – etc. – Including integral locking means
Patent
1993-12-30
1996-02-20
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Impact driven fastener, e.g., nail, spike, tack, etc.
Including integral locking means
411456, 411922, 606 67, F16B 1506, F16B 1508
Patent
active
054924529
ABSTRACT:
A fastening nail for fixing a cover membrane to a bone void which surrounds the bone of the body itself and is filled with an ossiferous material has a nail head with a larger diameter which enables receiving pressure of an impact tool for inserting a nail shaft with a smaller diameter into the bone. The nail shaft has essentially a cylindrical holding part extending to a conical tapering point part adjacent one end and is provided with a transition region between the holding part and point part having an annular shoulder with an enlarged diameter which has a conical surface merging obliquely with the generated surface of the point part in a direction toward the point of the nail and an annular surface extending substantially perpendicular relative to the holding axis of the nail. To insert the nail, the setting tool is elongated and has resilient jaws for gripping the nail and is used in combination with an auxiliary tool which has a foot with downwardly extending points for holding the membrane on the bone. The foot is provided with a setting opening which is large enough to allow inserting the nail through the opening to secure the membrane on the bone and the foot is provided with a drill template that is movable into the opening to position the drill when forming a pilot hole for the nail.
REFERENCES:
patent: 368687 (1887-08-01), Rogers
patent: 1200594 (1916-10-01), Curtis
patent: 1395960 (1921-11-01), Hill
patent: 1490722 (1924-04-01), Bacon
patent: 3325135 (1967-06-01), Clarke
patent: 3921496 (1975-11-01), Helderman
Duerr Walter
Kirsch Axel
Eberle Medizintechnische Elemente GmbH
Kirsch Axel
Wilson Neill R.
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