In one aspect, an apparatus for monitoring a physiological condition of a patient is disclosed. The apparatus includes a body having an attachment portion configured to be inserted into the skin of a patient to affix the body to the patient. The apparatus includes a sensor coupled to the body that is configured to generate sensor data corresponding to a physiological condition of the patient when the body is secured to the skin of the patient. The apparatus further includes a reference sensor that is remote from the sensor coupled to the body and is configured to engage an outer surface of skin to generate reference data against which the sensor data is compared.

The present invention relates to a device for monitoring a concentration of an analyte in a foetus. The device comprises a biosensor for electrochemically measuring a concentration of an analyte in the foetus, a protrusion configured to be at least partially inserted into foetal tissue, and a device body supporting the biosensor and the protrusion. The device is configured such that when the device body contacts the surface area of the foetal tissue, the device body can be anchored to the foetal tissue and the protrusion can be inserted into the tissue so that the reactive substance of the biosensor electrochemically reacts with the analyte in the foetal tissue and in response to the electrochemical reaction the electrode of the biosensor detects an electronic signal, a strength of the electronic signal being indicative of the concentration of the analyte.

The present invention relates to a device for monitoring a concentration of an analyte in a foetus. The device comprises a biosensor for electrochemically measuring a concentration of an analyte in the foetus, a protrusion configured to be at least partially inserted into foetal tissue, and a device body supporting the biosensor and the protrusion. The device is configured such that when the device body contacts the surface area of the foetal tissue, the device body can be anchored to the foetal tissue and the protrusion can be inserted into the tissue so that the reactive substance of the biosensor electrochemically reacts with the analyte in the foetal tissue and in response to the electrochemical reaction the electrode of the biosensor detects an electronic signal, a strength of the electronic signal being indicative of the concentration of the analyte.