Ventilator for respiratory treatment
First Claim
1. A ventilator for respiratory treatment of a respirating subject comprising:
- gas delivery means for delivering respiratory gas to a subject;
regulation means for controlling said gas delivery means to deliver respiratory gas according to a mode of operation, for a non-spontaneously respirating subject, selected from the group consisting of a control mode, wherein said regulating means operates said gas delivery means to impose a breathing pattern according to prescribed control mode parameters, and a support mode, wherein said regulating means operates said gas delivery means to assist spontaneous breathing by said subject using support mode parameters;
sensing means for sensing a beginning of spontaneous respiration efforts of said subject and for emitting a signal to said regulating means in response to a sensed beginning of spontaneous respiration effort; and
said regulating means being connected to said sensing means and comprising means for changing the mode of operation of the ventilator, for when the ventilator is operating in said control mode, automatically switching control of the gas delivery means to deliver gas in said support mode, in response to said signal from said sensing means.
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Accused Products
Abstract
A ventilator for respirator treatment includes a gas delivery unit and a regulating unit arranged to control the gas delivery unit to deliver gas to a patient according to prescribed parameter values to obtain sufficient ventilation of the patient. Sensors are provided for sensing respiration efforts of the patient and to control the regulating unit to adapt an operation cycle of the gas delivery unit to sensed respiration efforts of the patient. The regulating unit controls the gas delivery unit also to deliver a pressure or volume support to the respiration of the patient to a predetermined resulting total pressure or volume level. If an apnea exceeding a predetermined length of time is detected by the sensor, the regulating unit controls the gas delivery unit to deliver gas to the patient according to the aforementioned prescribed parameter.
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Citations
16 Claims
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1. A ventilator for respiratory treatment of a respirating subject comprising:
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gas delivery means for delivering respiratory gas to a subject; regulation means for controlling said gas delivery means to deliver respiratory gas according to a mode of operation, for a non-spontaneously respirating subject, selected from the group consisting of a control mode, wherein said regulating means operates said gas delivery means to impose a breathing pattern according to prescribed control mode parameters, and a support mode, wherein said regulating means operates said gas delivery means to assist spontaneous breathing by said subject using support mode parameters; sensing means for sensing a beginning of spontaneous respiration efforts of said subject and for emitting a signal to said regulating means in response to a sensed beginning of spontaneous respiration effort; and said regulating means being connected to said sensing means and comprising means for changing the mode of operation of the ventilator, for when the ventilator is operating in said control mode, automatically switching control of the gas delivery means to deliver gas in said support mode, in response to said signal from said sensing means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification