Patent ID: 9119635
Filing Date: 2015-09-01
Classification: A61B

Abstract:
1. A surgical instrument system comprising a surgical alignment guide and a surgical cutting guide mountable on the surgical alignment guide, wherein: the surgical alignment guide includes an external surface and an attachment protrusion extending from the external surface, the attachment protrusion having a central axis, wherein the attachment protrusion comprises a first portion having a first constant cross section over a first distance as measured between axially spaced locations along the central axis and a second portion connected to the first portion having a second constant cross section over a second distance as measured between axially spaced locations along the central axis, the second cross section being larger than the first constant cross section and wherein the first portion is more distal from the external surface than the second portion, and the first and second portions are coaxial with the central axis; the surgical cutting guide includes: a body comprising an external surface having a recess that extends from the external surface into the body, the recess defines a central axis and is sized to receive the attachment protrusion of the surgical alignment guide, and wherein the recess has: a first portion having a first constant cross section over a first distance as measured between axially spaced locations along the central axis; a second portion spaced from and communicating with the first portion, the second portion having a second constant cross section over a second distance as measured between axially spaced locations along the central axis, the second constant cross section being larger than the first constant cross section; wherein the first and second portions are coaxial with the central axis and the second portion is closer to the external surface than the first portion; and wherein the shapes of the first and second portions of the recess in the alignment guide correspond to the shapes of the first and second portions of the attachment protrusion so that when the attachment protrusion is inserted into the recess in the cutting guide, the central axis of the recess is aligned with the central axis of the protrusion.