Chest compression apparatus having physiological sensor accessory

• US 8,257,288 B2
• Filed: 06/10/2009
• Issued: 09/04/2012
• Est. Priority Date: 06/29/2000
• Status: Active Grant

• Current Assignee: Respiratory Technologies, Inc. (Koninklijke Philips N.V.)
• Original Assignee: Respirtech
• Inventors: Hansen, Leland G., White, Greg
• Primary Examiner(s): MATTER, KRISTEN CLARETTE
• Application Number:
  US12/482,219
• Publication Number:
  US 20090306556A1
• Time in Patent Office: 1,182 Days
• Field of Search: 601 41- 44, 601148-152, 602/12, 606/202, 128/205.24, 128/204.18, 128/204.21, 128/204.23
• US Class Current: 601/152
• CPC Class Codes: A61H 2201/1238 with hydraulic or pneumatic drive
• CPC Class Codes: A61H 2201/165 Wearable interfaces
• CPC Class Codes: A61H 2201/5046 Touch screens
• CPC Class Codes: A61H 2230/207 partial O2-value
• CPC Class Codes: A61H 31/004 Heart stimulation

Abstract

A chest compression system and method of use for respiratory therapies such as cystic fibrosis, including an air flow generator, a pulse frequency control component having a fan blade for producing a series of air pulses communicated to a patient-worn garment during a therapy session. The system further includes one or more patient physiologic sensors capable of capturing patient information during the therapy session. The sensors may include a blood oximeter or a mouthpiece used to evaluate pulmonary function. An airway congestion monitoring system provides airway and lung congestion trend analysis. Adjustments are made to the series of air pulses based on a patient'"'"'s therapy session data.

Claims

1. A chest compression apparatus comprising:

a garment having an air bladder adapted to engage at least a portion of the thoracic region of a patient;

an air valve assembly having an air port in fluid communication with a pressurized air source, a vent port in fluid communication with an air vent, and a pair of bladder-side ports, said air valve assembly providing selective fluid communication between the air vent and one of the pair of bladder-side ports and between the vent port and the other bladder-side port;

an air manifold coupled to the air valve assembly, with said air valve assembly periodically interrupting a flow of pressurized air from said source into said air manifold, and said air manifold providing fluid communication between the pair of bladder-side ports and a pair of air lines coupled to the air bladder and with said pair of air lines communicating a series of air pulses to said air bladder, said series of air pulses being established by the flow of pressurized air first through the air valve assembly and then through the air manifold;

a mouthpiece sensor including a sensor body adapted to be inserted into a mouth of the patient, said mouthpiece sensor providing air flow information relating to patient use of the garment during a therapy session; and

a controller in communication with the mouthpiece sensor, said controller adjusting an operating condition of the apparatus based on said air flow information provided by said mouthpiece sensor during said therapy session.

2. The chest compression apparatus of claim 1 wherein the air valve assembly comprises a rotating valve which periodically interrupts air flow between the vent port and a second air line.

3. The chest compression apparatus of claim 2 wherein the series of air pulses define a pressure waveform which includes one or more minor perturbations or fluctuations within the pressure waveform.

4. The chest compression apparatus of claim 2 wherein the rotating valve includes a motor-driven blade.

5. The chest compression apparatus of claim 1 wherein said pair of air lines include a flexible tubing having quick-connect air fittings with a latch to facilitate immediate connection and disconnection of said flexible tubing into said apparatus.

6. The chest compression apparatus of claim 1 further comprising a pulse oximeter or a blood gas content sensor or both.

7. The chest compression apparatus of claim 6 wherein the pulse oximeter includes circuitry for generating light pulses and for detecting light having passed through at least a portion of the patient.

8. The chest compression apparatus of claim 1 wherein the mouthpiece sensor is defined as an open-ended tube having an interior restriction and a pair of air ports.

9. The chest compression apparatus of claim 8 wherein the air ports are in fluid communication with a pair of sensing air ports on a housing via a pair of flexible air tubes.

10. The chest compression apparatus of claim 1 comprising a display monitor.

11. The chest compression apparatus of claim 10 wherein the display monitor is a touch-sensitive display adapted as a user interface.

12. The chest compression apparatus of claim 10 wherein the display monitor provides a visual display to the patient relating to operation of the physiological data acquisition device.

13. The chest compression apparatus of claim 12 wherein the display monitor provides visual prompting to the patient towards maintaining patient compliance with a given therapy protocol.

14. The chest compression apparatus of claim 13 wherein the visual prompting is provided via a game or other entertainment scheme visually presented to a patient during said therapy session.

15. The chest compression apparatus of claim 1 further comprising means for conveying or receiving information from a remote system.

16. The chest compression apparatus of claim 15 wherein the means for conveying or receiving includes a wireless transmission or a removable memory appliance or both.

17. The chest compression apparatus of claim 15 wherein the means for conveying or receiving provides update information including software upgrades for a system controller.

18. A chest compression apparatus comprising:

a garment having an air bladder adapted to engage at least a portion of the thoracic region of a patient;

an air valve assembly having an air port in fluid communication with a pressurized air source, a vent port in fluid communication with an air vent, and a pair of bladder-side ports, said air valve assembly providing selective fluid communication between the air vent and one of the pair of bladder-side ports and between the vent port and the other bladder-side port;

an air manifold coupled to the air valve assembly, with said air valve assembly periodically interrupting a flow of pressurized air from said source into said air manifold, and said air manifold providing fluid communication between the pair of bladder-side ports and a pair of air lines coupled to the air bladder and with said pair of air lines communicating a series of air pulses to said air bladder, said series of air pulses being established by the flow of pressurized air first through the air valve assembly and then through the air manifold;

a mouthpiece sensor adapted for coupling to the patient and providing a signal relating to a patient airway condition during a therapy session; and

a controller in communication with a pressure sensor, said controller changing the frequency or amplitude or both of the series of air pulses based on said signal provided by said mouthpiece sensor.

19. The chest compression apparatus of claim 18 wherein the air valve assembly comprises a rotating valve which periodically interrupts air flow between the vent port and a second air line.

20. The chest compression apparatus of claim 19 wherein the rotating valve includes a motor-driven blade.

21. The chest compression apparatus of claim 18 wherein the mouthpiece sensor is defined as an open-ended tube having an interior restriction and a pair of air ports.

22. The chest compression apparatus of claim 21 wherein the pair of air ports is in fluid communication with a pair of sensing air ports on a housing via a pair of flexible air tubes.

23. A method of applying pressure pulses to the thoracic region of a patient comprising the steps of:

connecting a garment having an air bladder to a pressurized air line, with said air bladder being positioned at the thoracic region of the patient;

connecting the air bladder to a vent line;

connecting the pressurized air line and the vent line to an air manifold;

connecting the air manifold to an air valve assembly, said air valve assembly including a rotating disk valve element which periodically interrupts air flow within the air line or the vent line or both to apply a series of pulses from the air valve assembly to the air manifold and the air bladder and thoracic region;

bypassing some air from the pressurized air line into said vent line via said air manifold while the series of pulses are conveyed to the air bladder;

connecting a mouthpiece sensor to the patient, said mouthpiece sensor including a body adapted to be inserted into a mouth of the patient;

monitoring lung function of the patient via said mouthpiece sensor; and

adjusting one or more operational conditions to control the series of pulses conveyed to the air bladder based on said monitoring.

24. The method of claim 23 wherein rotation of the disk valve element is electronically controlled so that a frequency of the air pulses can be adjusted.

25. The method of claim 23 further comprising the step of:

changing an amplitude of the air pulses during a therapy session based on said monitoring.