Surgery – Instruments – Orthopedic instrumentation
Patent
1998-01-27
1999-07-27
Buiz, Michael
Surgery
Instruments
Orthopedic instrumentation
606 56, A61B 1766
Patent
active
059282304
ABSTRACT:
An external fixation system (10) comprising one or more rings (14), elongated members (16), extension fingers (18) with pin holders (52), wire holders (22), clamping assemblies (20), screws (24) or wire (26) for securing parts of a bone (12), and rod connectors (174). The extension fingers (18) are positioned axially and radially along the elongated members (16). The pin holders (52) move axially along and radially around the extension fingers (18), and are secured in place using a one-hand operation which also secures the screw (24) in place. The screws (24) are secured to the pin holders (52) from a point which may be positioned and oriented with full spatial articulation in three dimensions. The rings (14) are provided with openings (104) composed of intersecting apertures (106) to decrease the spacing between available locations. A lengthening-compression-distraction (LCD) bar (28) permits traction or compressive forces to be exerted on the bone (12), as well as dynamization for weight-bearing compression. Certain components of the LCD bar (28) can be reconfigured during fabrication to facilitate use in a transport mode. The rod connector (174) joins two elongated members 16 at a selected and adjustable angle, and includes two open-ended U-collars (176, 178) stacked on a shaft (182) for rotation until the U-collars (176, 178) are compressed to clamp the elongated members (16).
REFERENCES:
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Simply Versatile ACE-Fisher.TM. Wire Tension System, Ace Medical Company (undated).
Carbon MonOtube, External Fixation System, Howmedica .COPYRGT.1994, Howmedica Ind. Rutherford, NJ.
Torus External Fixation System, .COPYRGT.1993 Zimmer, Inc.
Ace Unifix External Fixation System (undated).
Fixano Product List, Fixateur A Anneaux, Ring Fixator (undated).
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OrthoFrame.TM., OrthoLogic.RTM., 2850 South 36th Street, Phoenix, Arizona (Feb. 1996).
The Original Hoffmann External Fixation System, Howmedica (undated).
Buiz Michael
Reip David O.
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