Abstract: An annul protecting portion 23 having a thickness larger than the thickness of a sensor sensitive portion 1 is provided in such a manner as to surround the sensor sensitive portion 1, the sensor sensitive portion 1 together with the protecting portion 23 is placed between living tissues, so as to ensure that the gate portion 7 is not subjected to an external pressure by coming into contact with the living tissues. Further, outer peripheries of lead wires 4 on the sensor sensitive portion 1 side are covered with a plasticity material 24 woven into a tubular shape by a metal wire such as a stainless steel wire, and is grounded together with the metallic protecting portion, so as not to be subjected to induction noise. Further, the metal wire is bent to hold the sensor sensitive portion 1 at a suitable angle.

Abstract: The present invention concerns a system for determining the concentration of at least one analyte in a body fluid. The system has a first member and at least a second member of which at least one has a recess on its surface and the members are joined together in such a manner that the recess is closed by a surface of the other member to form a channel. The first and/or second member is composed at least partially of a membrane which is located either in the region of the recess or on the part of the other member that is opposite to the recess such that substances can be taken up from the surrounding fluid by means of the membrane. The system additionally has a sensor which can be used to determine the concentration of an analyte in the channel. Furthermore the system has at least one integrated reservoir which is connected to the channel.

Abstract: An automatic electrophysiological measuring apparatus to automatically penetrate a glass electrode(s) into the membrane of a Xenopus Oocyte to hold the membrane potential and to automatically measure reactions to the administration of a medicine is to be provided.

Abstract: Total ammoniacal concentration (TAC) in blood is measured and displayed on a repetitive basis by a controller driven sensor arrangement which may be utilized either with a catheter structure or with a bypass system. The catheter based sensors may be employed with a peripheral region of the vascular system of the body. Repetitive measurements are carried out and these measurements are subjected to a moving average filtering procedure, whereupon the filtered TAC values are displayed numerically and graphically. The controller functions to compute the rate-of-rise of TAC and compares that value with a threshold rate-of-rise valuation which is inputted by the practitioner. Threshold values for TAC also may be inputted and the system not only provides alarm warnings for threshold excursions in TAC above threshold or excursions in rate-of-rise of TAC above threshold but also provides a visual cuing as a warning that TAC is elevating from one filtered measurement to the next.

Abstract: A probe assembly includes at least two electrodes for measuring a potential difference between two measurement sites of a tissue of a human or animal organ and at least one sensor for measuring the tissue temperature. The probe assembly further includes a common support on which are placed the electrodes and the sensor. The support comprises conductors for linking the electrodes and the sensor to a signal processing unit with a view to calculating the tissue pH of the organ.