Access disconnect system with optical and other sensors
First Claim
1. An optical access disconnect system, comprising:
- at least one first optical detector;
a needle detector for detecting a venous needle;
a mount suitable for mounting the at least one first optical detector and the needle detector;
signal processing circuitry, the circuitry operably connected to the at least one first optical detector and the needle detector; and
a communications circuit connected to the signal processing circuitry, wherein the mount, the at least one first optical detector, and the needle detector are configured for positioning adjacent a dialysis access site for detecting a presence of blood of a patient and for detecting a presence of a venous needle, respectively, wherein the needle detector is a second optical detector positioned and arranged to look for movement of a mark or an object on the venous needle or on tubing connected to the venous needle.
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Accused Products
Abstract
An optical access disconnect system is useful for detecting the presence of blood. The optical access disconnect system includes one or more optical sensors placed near an access site of a patient, the optical sensors suitable for detecting the presence of blood, especially by detecting a difference in light reflected or absorbed by blood. The optical access disconnect system may also be used as an interlock to assure compliance. A detector may be placed adjacent the access site to detect the access needle, or an object or mark on the access needle or fluid line. A therapy machine, such as a dialysis machine, may be programmed not to start or continue operation unless the needle or fluid line is detected. The detector may be one of the optical sensors, calibrated or adjusted to detect a mark on the needle or access line, or may be another type of detector.
107 Citations
20 Claims
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1. An optical access disconnect system, comprising:
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at least one first optical detector; a needle detector for detecting a venous needle; a mount suitable for mounting the at least one first optical detector and the needle detector; signal processing circuitry, the circuitry operably connected to the at least one first optical detector and the needle detector; and a communications circuit connected to the signal processing circuitry, wherein the mount, the at least one first optical detector, and the needle detector are configured for positioning adjacent a dialysis access site for detecting a presence of blood of a patient and for detecting a presence of a venous needle, respectively, wherein the needle detector is a second optical detector positioned and arranged to look for movement of a mark or an object on the venous needle or on tubing connected to the venous needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An optical access disconnect system, comprising:
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at least one optical sensor; a needle sensor for detecting an access needle; a mount suitable for mounting the at least one optical sensor and the needle sensor on a patient, wherein the mount, the at least one optical sensor, and the needle sensor are configured for positioning adjacent an access site for detecting respectively a presence of blood and a presence of the access needle, wherein the needle sensor is a second optical sensor positioned and arranged to look for movement of a mark or an object on the access needle or on tubing connected to the access needle; signal processing circuitry operably connected to the at least one optical sensor and the needle sensor; a communications circuit connected to the signal processing circuitry; and an output device connected to the communications circuit or to the signal processing circuitry, the output device configured for sending a signal if blood is detected. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An optical access disconnect system, comprising:
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at least one optical sensor; a mount suitable for mounting the at least one optical sensor, wherein the mount and the at least one optical sensor are configured for positioning adjacent a dialysis access site on a patient for detecting a presence of blood; signal processing circuitry operably connected to the at least one optical sensor; a detector for detecting a presence of a needle adjacent the access site, the detector operably connected to the signal processing circuitry or a control circuit in communication with the signal processing circuitry, wherein the detector is an optical detector positioned and arranged to look for movement of a mark or an object on the needle or on tubing connected to the needle; and a communications circuit connected to the signal processing circuitry. - View Dependent Claims (17, 18, 19, 20)
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Specification