Abstract: A cellular building block including a middle beam and two legs. The cellular building block having the first leg coupled to the middle beam such that the leg is perpendicular to the middle beam and a second leg coupled to the middle beam such that the leg is perpendicular to the middle beam and spaced apart from the first leg, the first leg and the second leg having an inside edge and an outside edge. Having at least one barb located on the inside edge of the first leg and on the inside edge of the second leg and further configured to lock into a recess. The cellular building blocks connect in a two dimensional or three dimensional pattern and a produce a structured material that holds itself together and exhibits beneficial characteristics.

Abstract: The present invention relates to an apparatus for interacting with a medical device (10) which is suitable for connection into a communication network (11) which comprises at least one insecure area (11b) and a secure area (11a) on the device side, wherein the apparatus comprises transmission means (12; 44, 45) for transmitting communication packets to and from the medical device (10) via the communication network (11), it comprises monitoring means (13; 42, 43) for monitoring the state of the connection of the device (10) to the network (11), and it comprises breaker means (14; 40, 41) for breaking an existing connection between the secure area (11a) and the insecure area (11b) of the network (11) if, during the monitoring process, a state of the network connection is detected which poses a risk to a patient treated with the device (10) or to the correct functioning of the device (10).