Surgery – Instruments – Orthopedic instrumentation
Patent
1986-07-07
1990-07-24
Pellegrino, Stephen C.
Surgery
Instruments
Orthopedic instrumentation
A61B 1760, F16C 1100
Patent
active
049428721
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a device for externally setting bones and joints, by the compression or distraction of bone fragments.
2. Description of the Prior Art
Various devices for externally setting bones are known in the art; all of these devices have disadvantages of one type or another. One such device, a rigid tubular device, cannot be used in different positions. Other devices can be used in different positions; however, because they comprise multiple connected pieces, and are of considerable complexity, these devices are too heavy, and lack sufficient strength for their intended purpose.
The device of the present invention overcomes the indicated deficiencies of the devices of the prior art. It comprises a solid tubular device which can be easily manipulated, and is well suited for placing in various positions covering different spacial arrangements. It is also superior by virtue of being lighter in weight than the devices of the prior art.
SUMMARY OF THE INVENTION
The device of the present invention is a compression system, available for use wherever needed, and is capable of applying a significant compression force against bones. The device comprises a rigid tubular tutor, or guide, for bone-anchoring members, such as bone-contacting pins; the guide permits such pins, passing through the guide, free rotation around the guide perpendicular to its axis, thereby allowing each pin to be fixed in the proper position.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the cylindrical sleeve of the tubular guide of the present invention.
FIG. 2 is a perspective view of the sleeve of FIG. 1 from a different angle.
FIG. 3 is a side elevation view of the sleeve of FIG. 1.
FIG. 4 is another side elevation view of the sleeve of FIG. 1.
FIG. 5 is a perspective view of the internal cylinder of the present invention.
FIG. 6 is a partial cross-sectional view of the internal cylinder of FIG. 5, along its axis.
FIG. 7 is a perspective cross-sectional view of the sleeve of FIG. 1.
FIG. 8 is an elevational cross-sectional view of the sleeve FIG. 1.
FIG. 9 is a perspective cross-sectional view of two successively connected cylindrical sleeves, one housing an internal cylinder to form a tubular guide of the present invention.
FIG. 10 is an elevation cross-sectional view of the sleeves and cylinder shown in FIG. 9.
FIG. 11 is a perspective view of a second embodiment of the cylindrical sleeve.
FIG. 12 is a perspective view of a third embodiment of the cylindrical sleeve.
FIG. 13 is a perspective view of a second embodiment of the internal cylinder, corresponding to the cylindrical sleeve of FIG. 11.
FIG. 14 is a perspective view of a third embodiment of the internal cylinder, corresponding to the cylindrical sleeve of FIG. 12.
FIG. 15 is a top plan view of the cylindrical sleeve of the present invention, showing the capability of the sleeve for receiving the bone-anchoring pin inserted therethrough in various positions;
FIG. 16 is a side elevational view of a bone-anchoring pin of the present invention.
FIG. 17 is a side elevational view of a second embodiment of the bone-anchoring pin.
FIG. 18 is a side elevational view of the connecting bar of the present invention.
FIG. 19 is a perspective view of the T-shaped key for adjusting the joint screws of the present invention;
FIG. 20 is a side elevational view of a third embodiment of the bone-anchoring pin.
FIG. 21 is a perspective view of a terminal element for the tubular guide of the present invention.
FIG. 22 is a perspective view of the joint of the present invention.
FIG. 23 is a perspective view of a lateral member of the joint, and of two screws for insertion therein.
FIG. 24 is one embodiment of the linking member of the joint.
FIG. 25 is a second embodiment of the linking member.
FIG. 26 is a perspective view of one of the brackets of the compressor-distracter of the present invention.
FIG. 27 is a perspective view of the other of the brackets of the compressor-distracter.
FIG. 28
REFERENCES:
patent: 1997466 (1934-04-01), Longfellow
patent: 2251209 (1940-02-01), Stader
patent: 2439995 (1944-04-01), Thraikill
patent: 4308863 (1982-01-01), Fischer
patent: 4475546 (1984-10-01), Patton
patent: 4621627 (1986-11-01), DeBastiani et al.
Lewis Ralph
Pellegrino Stephen C.
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