Wound therapy system and wound dressing with ph sensor
AssigneeKCI Licensing, Inc.
InventorsJustin Alexander LONG, Konstantinos PETROPOULOS, Silvia GENERELLI, Christopher Brian LOCKE
Life of this patent
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Abstract
A wound therapy system having a wound dressing for treating a wound includes a sensor that measures a pH level at a wound area. The sensor has a circuit that includes a first electrode and one or more second electrodes. The first electrode has a changeable conductivity that changes according to a hydrogen ion concentration level. The one or more second electrodes are configured with a fixed conductivity that does not change with the hydrogen ion concentration level. The first electrode is coated with a porous protective membrane formed from a sulfonated and/or carboxylated copolymer.
Claims28
A sensor for measuring a pH level in a wound therapy system, the sensor comprising:
- a circuit configured to measure a pH level at a wound area, the circuit comprising:
- a first electrode configured with a changeable conductivity that changes according to a hydrogen ion concentration level;
- and
- one or more second electrodes, each of the one or more second electrodes configured with a fixed conductivity that does not change with the hydrogen ion concentration level.
A wound treatment system having a sensor for measuring a pH level at a wound area, comprising:
- a wound dressing comprising at least a manifold layer, a drape layer, and a tubing connection pad;
- a negative pressure therapy unit configured to provide a negative pressure at the wound area;
- tubing coupling the negative pressure therapy unit to the tubing connection pad;
- a sensor configured to measure a pH of a wound fluid from the wound area, the sensor disposed proximate the tubing connection pad and comprising:
- a first electrode configured with a changeable conductivity that changes according to a hydrogen ion concentration level;
- and
- one or more second electrodes, each of the one or more second electrodes configured with a fixed conductivity that does not change with the hydrogen ion concentration level.
A method of fabricating a sensor for measuring a pH level at a wound area, comprising:
- screen-printing a first electrode at a first end of a substrate;
- depositing iridium oxide on the first electrode;
- depositing a porous protective membrane coating on the first electrode, wherein the first electrode has changeable conductivity that changes according to a hydrogen ion concentration level;
- and
- screen-printing one or more second electrodes at the first end of the substrate, wherein the one or more second electrodes has fixed conductivity that does not change according to a hydrogen ion concentration level.
A wound dressing having a sensor for measuring a pH level at a wound area, comprising:
- a manifold layer;
- a drape layer disposed over the manifold layer;
- a tubing connection pad on the drape layer;
- a sensor configured to measure a pH of a wound fluid from the wound area, the sensor disposed proximate the tubing connection pad and comprising:
- a first electrode comprising an iridium oxide material and having a variable conductivity;
- and
- a porous protective membrane coating on the iridium oxide material, the coating comprising a sulfonated and/or carboxylated copolymer.
Dependencies are inferred from the claim text.