User attempted to connect reservoir/pump from lot prior to design change to a regulator made after design change.The user says that the only way to connect these parts is to omit the regulator (de-attach the regulator from the catheter and subsequently attach the reservoir directly to catheter).It is very clearly described in the ifu, that the regulator must never be by-passed and the flow rate shall be verified after applying the reservoir to the regulator.In conclusion, even though the user intended to use incompatible devices, the user adhered to the ifu and used the device as intended e.G.Did not connect the reservoir directly to the catheter.Additional info was received from the hospital, confirming that the device did not contribute to a death or serious injury.
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