Patent ID: 9549769
Date: 2017-01-24
CPC Classifications: A61B

Claim:
1. A measurement instrument comprising: a flexible shaft portion having a proximal end and a distal end, the flexible shaft portion including measurement markings along an outer surface of the flexible shaft portion; and a hook portion at the distal end of the flexible shaft portion; wherein the flexible shaft portion and the hook portion define a lumen that terminates in an opening at the hook portion, wherein the flexible shaft portion includes multiple, spaced apart voids along a length of the flexible shaft portion, the voids configured to provide the flexible shaft portion with flexibility, wherein the hook portion includes a tip extending radially outward beyond an outer diameter surface of the flexible shaft portion and a terminal end of the hook portion furthest from the flexible shaft portion angled relative to the tip in a direction back towards the proximal end of the shaft, wherein the tip and terminal end are substantially coplanar with respect to a plane parallel to a longitudinal axis of the shaft, and wherein a portion of an inner engagement surface of the hook extends back toward a proximal portion of the shaft at an acute angle relative to the shaft.