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, the at least one command signal comprising a first command signal to the actuator and a second command signal to the actuator, a predetermined time interval lapses between the stage of emitting a first signal and the stage of emitting a second signal;
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; and
emitting a further signal in consequence of the verification of the at least a second value,wherein the infusion liquid is a blood anticoagulant.
4 Assignments
0 Petitions
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.
-
Citations
30 Claims
-
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, the at least one command signal comprising a first command signal to the actuator and a second command signal to the actuator, a predetermined time interval lapses between the stage of emitting a first signal and the stage of emitting a second signal; 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; and emitting a further signal in consequence of the verification of the at least a second value, wherein the infusion liquid is a blood anticoagulant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. 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, the at least one command signal comprising a first command signal to the actuator and a second command signal to the actuator, a predetermined time interval lapses between the stage of emitting a first signal and the stage of emitting a second signal; 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; and emitting a further signal in consequence of the verification of the at least a second value, wherein the infusion device is operatively associated to an extracorporeal blood circuit. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. 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, the at least one command signal comprising a first command signal to the actuator and a second command signal to the actuator, a predetermined time interval lapses between the stage of emitting a first signal and the stage of emitting a second signal; 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; and emitting a further signal in consequence of the verification of the at least a second value, wherein the second command signal comprises an activation of the actuator with an infusion force which is close to a maximum force available for the actuator.
-
-
29. A tangible, machine-readable medium having instructions for at least one controller recorded thereon, the medium comprising:
-
instructions for activating an actuator; instructions for determining at least a first value of a parameter indicating an infusion force; instructions for verifying whether the first value satisfies a first predetermined relation with a first reference value; instructions for emitting at least one command signal for generating a variation in the functioning of the actuator if the relation is satisfied, the at least one command signal comprising a first command signal to the actuator and a second command signal to the actuator, a predetermined time interval lapses between the stage of emitting a first signal and the stage of emitting a second signal, the second command signal comprising an activation of the actuator with an infusion force which is close to a maximum force available for the actuator; instructions for determining at least a second value of a parameter indicating an infusion force; instructions for verifying whether the second value satisfies a second predetermined relation with a second reference value; and instructions for emitting a further signal in consequence of the verification of the at least a second value. - View Dependent Claims (30)
-
Specification