Automatic regulation of respirators
First Claim
1. Regulation of the flow and pressure of the respiration gas in a respirator during the respiration cycle in which the actual flow and pressure of the respiration gas are measured via a measuring device arranged proximate the patient connection and the measured values thereof are converted into electrical signals and in which the flow and pressure of the respiration gas are controlled during the inspiration and expiration portions of the respiration cycle via valve means arranged between the respiration gas source and the measuring device, comprising:
- measuring the actual flow of respiration gas proximate the patient;
measuring the actual pressure of respiration gas proximate the patient,calculating nominal values of flow and pressure from preselected fixed values and said actual values;
comparing the actual values measured for the flow and pressure with said nominal values; and
obtaining from said comparison a control signal for modulating the valve means and thereby regulating the flow and pressure of the respiration gas wherein the inspiration portion of the respiration cycle is comprised of two phases, and wherein said regulation includes pressure-regulating the first of said two phases and flow-regulating the second of said two phases.
2 Assignments
0 Petitions
Accused Products
Abstract
Regulation of the flow and pressure of the respiration gas in a respirator coupled to a patient is disclosed in regard to a respirator arrangement having a flow and pressure measuring device arranged proximate the patient connection for determining the flow and pressure of the respiration gas and converting the magnitudes, measured into electrical signals and also valve means arranged between the respiration gas source and the measuring device for controlling the flow and pressure of the respiration gas. Means are provided for obtaining a control signal for modulating the valve means by comparing the actual values measured for the flow and pressure with nominal values which themselves are calculated from preselected fixed values and said actual values.
-
Citations
24 Claims
-
1. Regulation of the flow and pressure of the respiration gas in a respirator during the respiration cycle in which the actual flow and pressure of the respiration gas are measured via a measuring device arranged proximate the patient connection and the measured values thereof are converted into electrical signals and in which the flow and pressure of the respiration gas are controlled during the inspiration and expiration portions of the respiration cycle via valve means arranged between the respiration gas source and the measuring device, comprising:
-
measuring the actual flow of respiration gas proximate the patient; measuring the actual pressure of respiration gas proximate the patient, calculating nominal values of flow and pressure from preselected fixed values and said actual values; comparing the actual values measured for the flow and pressure with said nominal values; and obtaining from said comparison a control signal for modulating the valve means and thereby regulating the flow and pressure of the respiration gas wherein the inspiration portion of the respiration cycle is comprised of two phases, and wherein said regulation includes pressure-regulating the first of said two phases and flow-regulating the second of said two phases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
Specification