Device and process for supplying respiratory gas under pressure or volumetrically
First Claim
1. Device (1) for supplying respiratory gas to a patient according to respiratory cycles, comprising a gas flow generator (2) provided with a turbine (2a) with low inertia and high nominal speed, a first circuit (3) called a circuit for supplying a gaseous flow to a respiratory mask (4) or to an intubation means of the patient, means (5, 6, 7, 8) for measuring the pressure and/or flow rate of the gaseous flow, means (9) for computing parameters of pressure and/or flow rates and means (10) for controlling speed of rotation of the generator, characterized in that the measuring means (5, 6, 7, 8), the computation means (9) and the means (10) for controlling the speed coact automatically to control the speed of rotation of the turbine (2a) as a function of the inspiration and expiration phases and as a function of the patient pressure signals and/or inspiration flow rate signals.
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Accused Products
Abstract
A device for supplying respiratory gas to a patient according to respiratory cycles, includes a gaseous flow rate generator provided with a turbine with low inertia and high nominal speed, a first supply circuit for the gaseous flow toward a respiratory mask or an intubation elements of the patient, elements for measuring pressure and/or measuring flow rate of the gaseous flow, the computation elements for parameters of pressure and/or flow rate, and elements for controlling the speed of rotation of the generator. The measuring elements, the computation elements and the speed control elements coact automatically to control the speed of rotation of the turbine as a function of the inspiration and expiration phases and as a function of patient pressure signals and/or inspiration flow rate signals.
215 Citations
20 Claims
- 1. Device (1) for supplying respiratory gas to a patient according to respiratory cycles, comprising a gas flow generator (2) provided with a turbine (2a) with low inertia and high nominal speed, a first circuit (3) called a circuit for supplying a gaseous flow to a respiratory mask (4) or to an intubation means of the patient, means (5, 6, 7, 8) for measuring the pressure and/or flow rate of the gaseous flow, means (9) for computing parameters of pressure and/or flow rates and means (10) for controlling speed of rotation of the generator, characterized in that the measuring means (5, 6, 7, 8), the computation means (9) and the means (10) for controlling the speed coact automatically to control the speed of rotation of the turbine (2a) as a function of the inspiration and expiration phases and as a function of the patient pressure signals and/or inspiration flow rate signals.
- 15. Device (1) for providing a respiratory gas to a patient according to respiratory cycles, comprising a gas flow generator (2) provided with a turbine (2a) for flow inertia and high nominal speed, a first circuit (3) called a circuit for supplying gaseous flow toward a respiratory mask (4) or an intubation means of the patient, means (5, 6, 7, 8) for measuring pressure and/or of flow rate of the gaseous flow, computation means (9) of parameters of pressure and/or flow rate, and means (10) for controlling the speed of rotation of the generator, characterized in that the measuring means (5, 6, 7, 8), the computation means (9) and the speed control means (10) coact automatically to control the speed of rotation of the turbine (2a) as a function of the inspiration and expiration phases and as a function of the patient pressure signals and/or inspiration flow rate signals, and in that the control system of the generator carries out phases of pressure increase with increasing slopes of pressure by means of acceleration of the turbine (2a), the supply of respiratory gas taking place according to pressure or according to volume.
Specification