Sleep apnea treatment apparatus

• US 5,540,219 A
• Filed: 01/26/1995
• Issued: 07/30/1996
• Est. Priority Date: 01/26/1995
• Status: Expired due to Term

• Current Assignee: RIC INVESTMENTS LLC (Respironics Incorporated)
• Original Assignee: Respironics Incorporated
• Inventors: Fiore, John H., Mechlenburg, Douglas M., Kimmel, Steven A.
• Primary Examiner(s): Lewis, Aaron J.
• Application Number:
  US08/378,467
• Time in Patent Office: 551 Days
• Field of Search: 128/204.18, 128/204.21, 128/204.23, 128/716, 128/202.22, 128/205.23
• US Class Current: 128/204.23
• CPC Class Codes: A61M 16/00 Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes stimulating the respiratory movement by mechanical, pneumatic or electrical means, iron lungs combined with gas breathing means A61H31/00
• CPC Class Codes: A61M 16/0069 the speed thereof being controlled by respiratory parameters, e.g. by inhalation
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 16/16 Devices to humidify the respiration air A61M16/1045 takes precedence
• CPC Class Codes: A61M 2016/0021 with a proportional output signal, e.g. from a thermistor
• CPC Class Codes: A61M 2016/0036 in the breathing tube and used in both inspiratory and expiratory phase

Abstract

Apparatus for delivering pressurized gas to the airway of a patient including: a gas flow generator for providing a flow of gas, a breathing appliance for sealingly communicating with the airway of the patient, and a conduit for delivery of the gas flow to the airway of the patient, the conduit having a first end connected to the gas flow generator and a second end connected to the breathing appliance. The apparatus further includes at least one sensor in fluid communication with the conduit and located substantially at the gas flow generator for detecting conditions corresponding to breathing patterns of the patient and generating signals corresponding to the conditions, and an information processor for receiving the signals and for controlling the output of the gas flow generator responsive to the signals.

Claims

1. Apparatus for delivering pressurized gas to the airway of a patient, said apparatus comprising:

gas flow generator means for providing a flow of said gas;

patient interface means for sealingly communicating with the airway of a patient;

first conduit means for delivery of said gas flow to the airway of a patient, said first conduit means;

comprising a first conduit having a first end connected to said gas flow generator means and a second end connected to said patient interface means;

sensor means in fluid communication with said first conduit and located substantially at said gas flow generator means for detecting conditions corresponding to breathing patterns of a patient and generating signals corresponding to said conditions;

second conduit means for communicating said conditions to said sensor means, said second conduit means comprising a second conduit having one end communicating with said sensor means and an opposite end communicating with said first conduit and located substantially at said gas flow generator means, said second conduit communicating with said first conduit substantially at said first end of said first conduit, said second conduit being acoustically tuned to optimally transmit sound frequencies falling within a range which is known to be associated with upper airway obstructions;

information processing means for receiving said signals and for controlling the output of said gas flow generator means responsive to said signals.

2. The apparatus of claim 1 wherein said conditions corresponding to breathing patterns of a patient comprise the pressure of a gas flow provided by said gas flow generator means.

3. The apparatus of claim 1 wherein said conditions corresponding to breathing patterns of said patient comprise the flow rate of said gas flow provided by said gas flow generator means.

4. The apparatus of claim 1 further comprising a pressure controller connected to said gas flow generator means and said sensor means, said information processing means being operably connected to said pressure controller to cause said pressure controller to regulate the pressure of said gas flow provided by said gas flow generator means responsive to said signals received by said sensor means.

5. The apparatus of claim 1 further comprising means for retrieving and storing output data associated with gas flow generator means.

6. The apparatus of claim 4 further comprising means for retrieving and storing output data associated with at least one of said gas flow generator means and said pressure controller.

7. The apparatus of claim 1 wherein said second conduit includes an internal tubing which optimizes a signal to noise ratio of the detected conditions to optimally transmit said sound frequencies.