Blood treatment apparatus with alarm device
First Claim
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1. A blood treatment apparatus comprising:
- a blood circulator;
a dialysate circulator;
sensors for monitoring parameters;
actors for effecting changes in the circulators;
a controller for monitoring signals supplied from the sensors and for controlling the actors;
a first alarm system controlled by the controller;
a supervisor monitoring the controller;
a second alarm system controlled by the supervisor, the controller and the supervisor being configured to detect alarm conditions; and
a function monitoring device, wherein, upon detection of an alarm condition by at least one of the controller and the supervisor, the first alarm system is activated, and wherein, in case of a failure of the first alarm system, the function monitoring device activates the second alarm system through the supervisor.
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Abstract
A blood treatment apparatus includes a controller and a supervisor, which together monitor various sensors. The controller is equipped with a first alarm system and the supervisor is equipped with a second alarm system. To avoid competition between both alarm systems, the alarm system of the supervisor normally remains mute. A function monitoring device monitors the function of the first alarm system and signals a missing alarm to the supervisor. Only in this case will the second alarm system of the supervisor be activated.
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Citations
7 Claims
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1. A blood treatment apparatus comprising:
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a blood circulator;
a dialysate circulator;
sensors for monitoring parameters;
actors for effecting changes in the circulators;
a controller for monitoring signals supplied from the sensors and for controlling the actors;
a first alarm system controlled by the controller;
a supervisor monitoring the controller;
a second alarm system controlled by the supervisor, the controller and the supervisor being configured to detect alarm conditions; and
a function monitoring device, wherein, upon detection of an alarm condition by at least one of the controller and the supervisor, the first alarm system is activated, and wherein, in case of a failure of the first alarm system, the function monitoring device activates the second alarm system through the supervisor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification