Dosing system
First Claim
Patent Images
1. A dosing system comprising:
- a dosing unit for delivering an amount of additive into an inspiration gas adapted for delivery to a subject experiencing alternating inspiration phases and expiration phases;
an introducer for introducing an indicator material into said inspiration gas at an onset time within one of said inspiration phases; and
a control unit for monitoring, in expiration gas in an expiration phase following said one of said inspiration phases, a level of a component of said expiration gas related to said indicator material, and for controlling said dosing unit to vary a timing of delivery of said additive dependent on said level and said onset time.
2 Assignments
0 Petitions
Accused Products
Abstract
A dosing system has a dosing unit for delivering an amount of an additive into an inspiration gas from a mechanical ventilator an introducer arrangement for introducing an indicator material into the inspiration gas at an onset time within an inspiration phase, and a control arrangement which monitors a level of a component of the expiration gas related to the indicator material during a successive expiration phase and to control the dosing unit to vary the timing of delivery of the additive dependent on both the monitored level and the onset time.
-
Citations
10 Claims
-
1. A dosing system comprising:
-
a dosing unit for delivering an amount of additive into an inspiration gas adapted for delivery to a subject experiencing alternating inspiration phases and expiration phases;
an introducer for introducing an indicator material into said inspiration gas at an onset time within one of said inspiration phases; and
a control unit for monitoring, in expiration gas in an expiration phase following said one of said inspiration phases, a level of a component of said expiration gas related to said indicator material, and for controlling said dosing unit to vary a timing of delivery of said additive dependent on said level and said onset time. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A method for controlling timing of delivery of an additive into an inspiration gas supplied to a respirating subject experiencing alternating inspiration and expiration phases, said method comprising the steps of:
-
introducing an indicator material into said inspiration gas at a known onset time within one of said inspiration phases;
monitoring a level of a component related to said indicator material in expiration gas during an expiration phase following said one of said inspiration phases; and
adjusting the timing of said delivery of said additive dependent on said level and said onset time. - View Dependent Claims (7, 8)
-
-
9. A dosing monitor comprising:
-
an introducer for introducing an indicator material, indicating take-up of an additive within a respiratory system of a patient, into inspiration gas during an inspiration phase experienced by said patient; and
a detector which monitors a level of a component of an expiration gas, in an expiration phase following said inspiration, related to said indicator material, and which generates an output dependent on said level. - View Dependent Claims (10)
-
Specification