Calibrated pH sensor
First Claim
1. A pH sensor package comprising a pH sensor adapted to be inserted into soft tissue, means to store calibration performance information of the pH sensor at a time of manufacture thereof, one or more calibration indicator compositions comprising a first calibration indicator composition, an indication associated with the first calibration indicator composition, and a closed housing;
- wherein the pH sensor comprises;
a shaft,a tip at one end of the shaft comprising a sensing membrane having an internal surface and an external surface,a reference electrode,an internal solution contacting the internal surface of the sensing membrane,a measuring electrode extending into the internal solution, anda connection means suitable for connecting the sensor to a meter;
wherein the means to store calibration performance information comprises calibration performance information comprising details of individual performance parameters of the pH sensor at different temperatures at the time of manufacture;
wherein the pH sensor is surrounded by the closed housing, and the closed housing is suitable for maintaining the sterility of the pH sensor;
wherein the first calibration indicator composition is at a first pH;
wherein the indication conveys the first pH of the first calibration indicator composition; and
wherein each of the one or more calibration indicator compositions is maintained separate from the pH sensor in the pH sensor package.
1 Assignment
0 Petitions
Reexamination
Accused Products
Abstract
The present invention relates to a pH sensor adapted to be inserted into all soft tissues, such as muscle, fat or other organs e.g. heart, lung, kidney, liver, pancreas, renal gland etc., comprising one or more of: a) means to provide sensor calibration performance information; b) a sensor dislodgement alert, providing an indication to the user if the pH reading falls outside a predetermined range; c) an alert to indicate that the sensor has exceeded its usage period; and d) an alert to indicate that the sensor had exceeded its shelf life. There is also provided a method of assessing the efficacy of a treatment regime comprising the steps of determining any change in the pH of the soft tissue during treatment, where any change in the pH towards the preferred range for the tissue type is indicative of an effective treatment regime and any change in the pH away from the preferred range for the tissue type is indicative of a worsening in the condition of the tissue, and thus an ineffective treatment regime.
21 Citations
18 Claims
-
1. A pH sensor package comprising a pH sensor adapted to be inserted into soft tissue, means to store calibration performance information of the pH sensor at a time of manufacture thereof, one or more calibration indicator compositions comprising a first calibration indicator composition, an indication associated with the first calibration indicator composition, and a closed housing;
-
wherein the pH sensor comprises; a shaft, a tip at one end of the shaft comprising a sensing membrane having an internal surface and an external surface, a reference electrode, an internal solution contacting the internal surface of the sensing membrane, a measuring electrode extending into the internal solution, and a connection means suitable for connecting the sensor to a meter; wherein the means to store calibration performance information comprises calibration performance information comprising details of individual performance parameters of the pH sensor at different temperatures at the time of manufacture; wherein the pH sensor is surrounded by the closed housing, and the closed housing is suitable for maintaining the sterility of the pH sensor; wherein the first calibration indicator composition is at a first pH; wherein the indication conveys the first pH of the first calibration indicator composition; and wherein each of the one or more calibration indicator compositions is maintained separate from the pH sensor in the pH sensor package. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification