Background
This paper describes the development of a new airway access device that will improve the speed and safety associated with bougie assisted endotracheal intubation in anaesthesia and critical care. Case of need, design specification and fabrication of the steerable bougie mechanism is discussed.

Aims
Identify the need for a novel Steerable Bougie whilst considering technology readiness levels associated with medical device design. Analyse and produce suitable mechanisms, utilising smart materials to increase device functionality ensuring successful patient intubation procedures.

Methods
This work describes the total design activity that contributes to the successful design and manufacture of medical devices through research and development, from case of need research to smart material actuation mechanisms. Research focuses on identifying a suitable control mechanism to allow a steerable tip to be integrated into a bougie with a control device attached to the laryngoscope.

Results
Data collected from a user group survey supported the development of a novel bougie, with better shape retention, variable rigidity within the tip, and an integrated steerable function. Analysis of several mechanisms, artificial muscles and smart materials identified a cost effective steerable mechanism that can be incorporated into a steerable bougie.

Conclusion
Users have defined a need for a new steerable bougie for endotracheal intubation. Controlling smart materials and mechanisms within the predefined dimensions identified strengths and weaknesses associated with steerable functions. The performance of the selected mechanism for incorporation in the steerable bougie requires a high level of control to accurately steer a device within the human airway.