초록 ▼

An in vivo electrochemical sensor including a working electrode, and an analyte-responsive sensing layer proximate the working electrode. The sensing layer is exposed at an edge of the sensor, wherein the sensor signal is limited, at least in part, by mass transport of analyte to the sensing layer.

An in vivo electrochemical sensor including a working electrode, and an analyte-responsive sensing layer proximate the working electrode. The sensing layer is exposed at an edge of the sensor, wherein the sensor signal is limited, at least in part, by mass transport of analyte to the sensing layer. The sensor is configured and arranged for implantation into the body of a mammal for contact with body fluids of the mammal. The analyte diffuses to the sensing element via the edge of the sensor, thereby restricting mass transport of the analyte to the sensing element. This is because the solution-contacting surface area of the sensor edge is much smaller than an open face of the sensing layer.

대표청구항 ▼

An in vivo electrochemical sensor including a working electrode, and an analyte-responsive sensing layer proximate the working electrode. The sensing layer is exposed at an edge of the sensor, wherein the sensor signal is limited, at least in part, by mass transport of analyte to the sensing layer.

An in vivo electrochemical sensor including a working electrode, and an analyte-responsive sensing layer proximate the working electrode. The sensing layer is exposed at an edge of the sensor, wherein the sensor signal is limited, at least in part, by mass transport of analyte to the sensing layer. The sensor is configured and arranged for implantation into the body of a mammal for contact with body fluids of the mammal. The analyte diffuses to the sensing element via the edge of the sensor, thereby restricting mass transport of the analyte to the sensing element. This is because the solution-contacting surface area of the sensor edge is much smaller than an open face of the sensing layer. eciding whether an interference coefficient is present is an average value of the measurement signal, which average value is preferably obtained through averaging of the measurement signal and/or the energy of the measurement signal over a time interval, and wherein, if a coefficient characteristic is greater than a given factor multiplied by the respective determined average value, said coefficient is regarded as an interference coefficient, whereupon said coefficient characteristic is reduced, preferably by a given factor. 10. A method as claimed in claim 1, wherein the manipulation in step (c) is carried out through a reduction of the amplitude to or towards a further threshold value for the respective coefficient. 11. A method as claimed in claim 1, wherein the measurement signal is a medical measurement signal, in particular a pulsatory measurement signal such as in pulsoximetry of blood pressure measurement. 12. A computer program, preferably a computer program product stored on a computer-readable storage medium, comprising a code for implementing the steps as claimed in claim 1, in particular if said program is implemented on a computer. 13. A device for suppressing interference in a physical measurement signal with a substantially periodic useful signal, comprising: means for transforming, preferably by means of a wavelet transform, the measurement signal into a summation of aperiodic basic functions, each member of the summation having a coefficient, means for characterizing those coefficients which exceed a given threshold value as interference coefficients which have presumably been influenced by interference, means for manipulating the interference coefficients so as to suppress the interference, and means for transforming the manipulated summation back into an interference-suppressed measurement signal. 14. An apparatus for determining the oxygen content of blood by pulsoximetry, comprising device for suppressing interference in a measurement signal as claimed in claim 13.