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That's kinda like being killed by jacked up car crushing person working on the car underneath. Nothing to do with radiation or software. With a static device wh
by wolf550e 7y ago
That's kinda like being killed by jacked up car crushing person working on the car underneath. Nothing to do with radiation or software. With a static device where operator does not position the jack, the cause would be lack of mechanical maintenance or material failure (unlikely).
- jschwartzi 7y agoThe failure mode of the switch contributed to this accident, and a switch which does not exhibit this failure mode should have been used if possible. If not possible, then the switch should have been moved through a test actuation before reaching a position where the failure mode causes the patient to be killed. This test actuation should be performed each time the table is moved. Finally, the pathway that the switch passes through should be periodically cleared of debris and the switch tested on a regular basis. If the test actuation fails(indicating switch failure) then the table should reset to a safe position. As an aside, every time I step on the treadmill at the gym I check that the emergency stop button works and that the incline down and speed down buttons work. I have been stuck on a treadmill which I couldn't stop or slow down before.
- ryacko 7y agoThat is what the sides of the treadmill are for.
- jdsully 7y agoAll mechanical devices will fail eventually. While a test actuation might reduce the risk somewhat - its not going to be a sure thing. Remember the table didn't kill the last patient that stepped on it - why would anyone suspect the switch would fail now. Mechanical failures need to be dealt with differently than software. Parts must be replaced before they fail. Even if they appear to work correctly. Software doesn't wear out so its a whole different ball game.