Process for controlling an infusion device
First Claim
1. A process for controlling an infusion device, wherein the infusion device comprises a variable-volume container of the infusion liquid and an actuator for exerting an infusion force able to cause infusion of the liquid, the process comprising stages of:
- activating the actuator;
determining at least a first value of a parameter indicating an infusion force;
verifying whether the first value satisfies a first predetermined relation with a first reference value;
emitting at least one command signal for generating a variation in the functioning of the actuator if the relation is satisfied;
determining at least a second value of a parameter indicating an infusion force;
verifying whether the second value satisfies a second predetermined relation with a second reference value;
emitting a further signal in consequence of the verification of the at least a second value.
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Accused Products
Abstract
A process comprises the phases of: activating a pusher, which exerts a push force on a plunger of a syringe containing the infusion liquid; measuring the push force by means of a load cell; comparing the push force with a maximum threshold; halting the pusher when the maximum threshold is exceeded; after a predetermined pause, restarting the pusher and emitting a consent signal indicating correct loading of the syringe if, within a certain time from the restart, the push force again exceeds the maximum threshold. The infusion device serves to inject an anticoagulant into an extracorporeal blood circuit. The control process guarantees against loss of infusion due to an incorrect initial loading of the syringe
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Citations
36 Claims
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1. A process for controlling an infusion device, wherein the infusion device comprises a variable-volume container of the infusion liquid and an actuator for exerting an infusion force able to cause infusion of the liquid, the process comprising stages of:
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activating the actuator;
determining at least a first value of a parameter indicating an infusion force;
verifying whether the first value satisfies a first predetermined relation with a first reference value;
emitting at least one command signal for generating a variation in the functioning of the actuator if the relation is satisfied;
determining at least a second value of a parameter indicating an infusion force;
verifying whether the second value satisfies a second predetermined relation with a second reference value;
emitting a further signal in consequence of the verification of the at least a second value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 35, 36)
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17. An infusion device, comprising:
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a variable-volume container for an infusion liquid;
an actuator for exerting an infusion force able to cause infusion of a liquid;
at least one sensor of a parameter which is indicative of an infusion force on the container;
a controller programmed to perform following phases of a control procedure;
determining at least a first value of the parameter;
verifying whether the first value satisfies a first predetermined relation with a first reference value;
emitting at least one command signal for generating a variation in the functioning of the actuator if the relation is satisfied;
calculating at least a second value of the parameter;
verifying whether the second value satisfies a second reference value;
emitting a further signal in consequence of the further verification. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification