本发明系揭露一种治疗产品输送设备，其系包含一设备本体、一药筒、一啮合结构、一错误侦测器与一释放触发器。药筒持有一治疗产品，啮合结构释放性地啮合药筒与设备本体，在治疗产品从药筒中传输时，错误侦测器侦测一错误。释放触发器对一错误之侦测发生反应，以造成啮合结构将药筒从设备本体中释放。在此方法中，一错误造成药筒从设备本体中释放，以防止治疗产品传输到病人中。较佳的解决方式为产品传输机制（例如帮浦）只有暂停或停止，因为当药筒分离时，不会有任何传输，直到药筒再次安装上为止（当原药筒有错误，以一新药筒取代）。

A therapeutic product delivery device is described which comprises a device body and a cartridge for holding a therapeutic product. An engagement structure is provided for releasably engaging the cartridge with the device body. A fault detector is provided for detecting a fault in the delivery of the therapeutic product from the cartridge. A release trigger is responsive to the detection of a fault to cause the engagement structure to release the cartridge from the device body. In this way, a fault causes the cartridge to be released from the device body, which will prevent any further delivery of the therapeutic product to the patient. This solution is strongly preferable to a solution in which a product delivery mechanism (e.g. a pump) is merely paused or stopped, since when the cartridge separates then no further delivery is possible at all, until the cartridge is reattached (or more probably replaced with a new cartridge in case the fault is with the cartridge).