Patent ID: 7608076
Filing Date: 2009-10-27
Classification: A61B

Abstract:
1. A surgical reamer for cutting a bone socket, comprising: a) a drive shaft comprising a distal drive shaft portion extending along a drive axis to a proximal drive interface connectable to a rotary drive mechanism; b) at least one fixed blade member comprising a proximal fixed blade portion secured to the drive shaft and extending in at least one radial direction to a distal fixed blade portion, wherein at least one fixed cutting blade extends upwardly from the distal portion of the fixed blade member; c) a support shaft comprising a proximal support shaft portion secured to the proximal portion of the fixed blade member and extending to a distal support shaft portion; d) at least one pin secured to the fixed blade member, the pin having a pin axis spaced from, but parallel to the drive axis; e) at least one pivotable blade member comprising a proximal pivotable blade portion having an opening pivotably supported on the support shaft and extending in at least one radial direction to a distal pivotable blade portion, wherein at least one pivotable cutting blade extends upwardly from the distal portion of the pivotable blade member; f) at least one circumferential slot provided in the pivotable blade member with the fixed pin received in the slot; g) a biasing member biasing between the pivotable blade member and the distal portion of the support shaft to thereby maintain a selected pivoted relationship between the pivotable blade member and the fixed blade member; and h) wherein the pivotable blade member is selectively pivotable toward and away from the fixed blade member to either expand or contract the reamer in relative overall size, such that: