DYNAMIZATION MODULE FOR EXTERNAL FIXATION STRUT

摘要

The present disclosure relates to an external fixation apparatus comprising a strut having a longitudinal axis defined therein, the strut comprising a strut housing having a housing adjustment aperture, an adjustment sleeve slidably disposed within the strut housing, and a fastener that releasably couples the strut housing with the adjustment sleeve. An embodiment of the adjustment sleeve comprises a first and a second bore extending from a top towards a bottom surface of the adjustment sleeve, a first sleeve member with a proximal end, a distal end, and an axial bore, and a second sleeve member adjoining the first sleeve member. In an embodiment, the second sleeve member comprises a body and a beveled end that is slidably disposed within the axial bore of the first sleeve member. The adjustment sleeve further comprises a biasing mechanism between the first sleeve member and the second sleeve member.

主权项

1. A strut having a longitudinal axis defined therein, the strut comprising:
a strut housing having a housing adjustment aperture and at least a partial axial bore defined therethrough; an adjustment sleeve slidably disposed within the axial bore of the strut housing, the adjustment sleeve comprising:
first and second bores extending from a top surface towards a bottom surface of the adjustment sleeve;a first sleeve member having a proximal end, a distal end, and at least a partial axial bore extending from the distal end towards the proximal end;a second sleeve member adjoining the first sleeve member, wherein the second sleeve member comprises a body having an annular surface that is substantially proximal to the distal end of the first sleeve member, the second sleeve member having a beveled end that is slidably disposed within the axial bore of the first sleeve member; anda biasing mechanism positioned between the first sleeve member and the second sleeve member; a fastener that releasably couples the strut housing to the adjustment sleeve, wherein the fastener extends from the housing adjustment aperture to the first bore; and an adjustment mechanism that comprises an element that passes through the second bore and comes in contact with the beveled end of the second sleeve member, wherein adjusting the element changes a vertical position of the element in relation to the adjustment sleeve and is thereby operable to control a longitudinal displacement of the beveled end that is in contact with the element and is slidably disposed within the axial bore of the first sleeve member.