Abstract
The number of devices within an operating room (OR) increases continuously as well as the complexity of the complete system. One key enabler to handle the complexity is an interoperable and vendor independent system of networked medical devices. To build up such an interoperable system we use the proposed IEEE 11073 SDC standards (IEEE P11073-10207, -20701, -20702) for networked point-of-care (PoC) and surgical devices. One of the major problems within the OR is that typically every device has its own control unit. This leads to unsatisfying situations like a high number of foot switches that causes operating errors or the problem that the physician cannot reach the control unit of the device where parameters have to be changed or an activation should be triggered. Dynamically assignable controls will solve these problems. This paper describes mechanisms that allow a safe remote activation of safety critical device functionalities based on a potentially unsafe off-the-shelf network with problems like connection loss and jitter. The proposed systems is based on a periodic reactivation of the device functionality and the additional use safety related information that is included into the activate operation command. The main advantage is that all described mechanisms make use of the self-description capability provided by the IEEE 11073 SDC. This enables a real interoperability and plug-and-play functionality because both the medical device and the control client do not need any a priori knowledge about each other.
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