Bone attachment system
OwnerNathan H. Schwartzinventor
Life of this patent
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Abstract
An attachment wire construction for attaching bone together, including an elongated wire having a leading end defining a drill tip. The wire has an anular breakneck groove that forms a reduced diameter frangible section. The leading end of the wire is externally threaded along the length of the wire.
Claims19
A method of connecting fractured bones together with a threaded attachment wire comprising the steps of:
- a) while maintaining the fractured portion of bone aligned, measuring the thickness of the bone across the fracture along the path at which the attachment wire is to be installed;
- b) selecting an externally threaded attachment wire with a leading end defining a drill trip thereon and defining an annular breakneck groove therearound to form a reduced diameter frangible section in the wire located a distance from the leading end corresponding to the measured bone thickness to define working section between the breakneck groove and the leading end;
- c) using the drill tip on the attachment wire to drill into the bone through the fracture until the breakneck groove is flush with the bone surface so that the threads on the working section engage the bone on both sides of the fracture;
- and
- d) laterally moving the projecting portion of the attachment wire to break same at the breakneck groove.
A method of attaching fractured or cut section of a bone together so that the sections can grow back together against using a threaded attachment wire comprising the steps of:
- a) screwing the attachment wire into both sections of the bone to hold same together with the wire threadedly engaging both sections of the bone and with the wire projecting exteriorly out of one section of the bone;
- b) cutting that section of the bone from which the wire projects closely adjacent to and around the wire to release that section of the bone from engagement with the wire;
- and,
- c) threadedly engaging that portion of the wire projecting out of the bone with a nut and tightening same to force the sections of the bone together.
An attachment wire construction for attaching bones together including elongate wire having a leading end defining a drill tip thereon, said wire further defining an annular breakneck groove therearound to form a reduced diameter frangible section in said wire located a prescribed breaking distance from said leading end to define a working section between said breakneck groove and said leading end, said reduced diameter frangible section being smaller in diameter than said working section of said wire, said wire being externally threaded along the length thereof so as to threadedly engage the bone along the total length of said working section.
A bone attachment system for attaching fractured or cut sections of a bone together so that the sections can grow back together again comprising:
- an elongate externally threaded attachment wire having a leading end defining a drill tip thereon adapted to drill and self-tap into both sections of the bone to hold same together with the wire threadedly engaging both sections of the bone;
- and
- a tubular guide member defining a projecting end thereon and a passage therethrough sized to slidably receive the wire therethrough and defining a sharpened angled needle tip on said projecting end adapted to pierce the skin and tissue around the bone along the path at which said wire is to be installed so that the attachment wire can be inserted through the passage in said guide member drill tip first, to protect the skin and tissue wile said attachment wire is being screwed into the bone.
A bone attachment system for attaching fractured or cut section of a bone together so that the sections can back together again comprising:
- an elongate externally threaded attachment wire having a leading end defining a drill tip thereon adapted to drill and self-tap into both section of the bone to hold same together with the wire threadedly engaging both sections of the bone;
- a nut adapted to be screwed onto said attachment wire;
- and
- a tubular trephine adapted to slidably fit over said attachment wire and cut the bone from engagement with threads on said attachment wire to release one section of the bone so said nut can then be screwed onto said wire to apply compressive forces across the fracture or cut in the bone.
Dependencies are inferred from the claim text.