Intra-operative heart size measuring tool

摘要

A heart size measuring tool includes a tubular body, a flexible measuring cord having length indicia, a measuring cord support mechanism movable between retracted and extended states with respect to the body, and an actuating mechanism to move the measuring cord support mechanism. When in the retracted state the measuring cord support mechanism is positioned within the tubular body with the measuring cord in a collapsed position. When the measuring cord support mechanism is in the extended state the measuring cord extends around a portion of a heart to be measured. A scale on the body can be used in connection with the indicia on the measurement cord to provide a reading of the heart size.

主权项

1. A heart size measuring tool, including:
a tubular body; a flexible measuring cord having length indicia; a measuring cord support mechanism movable between a retracted collapsed position with the measuring cord in a collapsed position at least partly within the tubular body, and an extended measuring position with respect to the body with the measuring cord in the measuring position outside the body to drive the measuring cord extended around a portion of a heart to be measured in the measuring position, wherein the measuring cord support mechanism includes a plurality of elongated members connected to the measuring cord; an actuating mechanism to move the measuring cord support mechanism between the retracted collapsed position and the extended measuring position; and further including a scale on the body that cooperates with the length indicia on the measuring cord to provide a visual indication of a length of the measuring cord around the heart when the measuring cord is in the measuring position.