Abstract: A tugger cart system used in an industrial setting, including a tugger cart and a controller. The tugger cart includes a tugger frame, a bay that is dimensioned to receive a rider cart, a platform configured to secure a rider cart within the bay, and at least one motor that pivots a plurality of wheels from side to side to steer the plurality of wheels. The tugger frame further includes a connector bracket that pivots from side to side along a vertical axis. The connector bracket is configured to attach the tugger frame to an adjacent tugger cart or tugger truck. A sensor system senses a degree that the connector bracket is pivoted relative to the tugger frame and generates an electronic signal. The controller receives the electronic signal from the sensor system and controls the motor to steer the plurality of wheels based on the electronic signal.

Abstract: Uterine sounds are provided including an insertion member having a distal end, a proximal end, and a lumen, wherein the insertion member is configured for insertion through an endocervical canal. A measurement member is provided having a distal end and a proximal end, the measurement member configured to move within the lumen of the insertion member, where the distal end can protrude from the distal end of the insertion member and is configured for insertion to approximately the fundus of a uterine cavity. An expansion member is also provided transitionable between an unexpanded and expanded state, wherein the unexpanded position is configured to pass an internal cervical os, and the expanded position is configured to prevent passage. Once the expansion member is positioned, the measurement member is positioned relative to the insertion member to establish a measurement of a depth of the uterine cavity.