A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/60 (2006.01) A61B 17/66 (2006.01)
Patent
CA 2093828
A B S T R A C T The invention relates to a unilateral external bone fixation device which can be readily adapted for carrying out either bone transport or bone lengthening procedures, the device comprising a non-rotatable rigid shaft (11) having a central bore (12) extending therethrough, and being longitudinally displaceable along the central axis of the device, and a plurality of clamp carrier housings (13, 14, 15) co-axially supported along the Length of the shaft (11), one of the housings (14) being fixed to the shaft so as to be movable therewith, each said housing having connected thereto an orthopaedic pin clamp assembly, a lead screw (19) housed within the bore of the shaft (11), and having a thread mating with a thread in the shaft bore, arranged and constructed so that upon rotation of the lead screw (19), the shaft (11) is displaced longitudinally along with the housing (14), to in turn cause an adjustment in the axial distances between the confronting ends of the housing (14) and at least one of the housings (13, 15). In the bone transport mode of use, housings (13, 15) remain fixed with respect to the lead screw (19), whilst in the bone lengthening mode of use, only one housing (13) is held fixed with respect to the lead screw, the two other housings (14, 15) moving, upon adjusted rotation of the lead screw, in unison with the shaft (11).
Ide Bruce Henry
Pohl Anthony Philip
Ide Bruce Henry
Pohl Anthony Philip
Sim & Mcburney
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