Abstract: Various methods and devices are provided for allowing multiple surgical instruments to be inserted into sealing elements of a single surgical access device. The sealing elements can be movable along predefined pathways within the device to allow surgical instruments inserted through the sealing elements to be moved laterally, rotationally, angularly, and vertically relative to a central longitudinal axis of the device for ease of manipulation within a patient's body while maintaining insufflation.

Abstract: Implementations described and claimed herein are directed to systems and methods for controlling operations of a drilling system based on drill bit mechanics. During a drilling operation, sensor signals corresponding to mechanics of a drill bit are collected and processed to generate drill bit mechanics data and corresponding mechanical rock property data. A drilling measurement system is then operated based on whether the rock property data indicates the drill bit is actively engaged with or disengaged from a subterranean formation. The mechanical rock property data may also be used to detect characteristics of the subterranean formation and to control the drilling system based on the presence and/or nature of the characteristics.