CA2506292A1 - Oscillatory chest wall compression device with improved air pulse generator - Google Patents

Oscillatory chest wall compression device with improved air pulse generator Download PDF

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Publication number
CA2506292A1
CA2506292A1 CA002506292A CA2506292A CA2506292A1 CA 2506292 A1 CA2506292 A1 CA 2506292A1 CA 002506292 A CA002506292 A CA 002506292A CA 2506292 A CA2506292 A CA 2506292A CA 2506292 A1 CA2506292 A1 CA 2506292A1
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CA
Canada
Prior art keywords
diaphragm
air pulse
air
oscillating
pressure
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Granted
Application number
CA002506292A
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French (fr)
Other versions
CA2506292C (en
Inventor
Nicholas P. Van Brunt
John A. Kivisto
Eric L. Stechmann
Mark A. Weber
Donald J. Gagne
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Hill Rom Services Pte Ltd
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Individual
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Priority to CA2772539A priority Critical patent/CA2772539C/en
Publication of CA2506292A1 publication Critical patent/CA2506292A1/en
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Publication of CA2506292C publication Critical patent/CA2506292C/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H9/00—Pneumatic or hydraulic massage
    • A61H9/005—Pneumatic massage
    • A61H9/0078—Pneumatic massage with intermittent or alternately inflated bladders or cuffs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0103—Constructive details inflatable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/12—Driving means
    • A61H2201/1238—Driving means with hydraulic or pneumatic drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5007—Control means thereof computer controlled
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5007—Control means thereof computer controlled
    • A61H2201/501—Control means thereof computer controlled connected to external computer devices or networks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5023—Interfaces to the user
    • A61H2201/5043—Displays
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5058—Sensors or detectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2205/00—Devices for specific parts of the body
    • A61H2205/08—Trunk
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H9/00—Pneumatic or hydraulic massage
    • A61H9/005—Pneumatic massage
    • A61H9/0071—Pneumatic massage by localized pressure, e.g. air streams or jets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S601/00—Surgery: kinesitherapy
    • Y10S601/06—Artificial respiration conforming to shape of torso
    • Y10S601/07—Inflatable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S601/00—Surgery: kinesitherapy
    • Y10S601/11—Artificial respiration using vibration frequency

Abstract

An improved air pulse generator has reduced noise and vibration forces, an improved user interface, reduced size and weight, sweeping oscillating frequency, an electronic flywheel, an improved air pulse module, and internal heat dissipation. The improved air pulse generator also provides prescribed treatment protocols for carrying out high frequency chest wall oscillations.

Claims (37)

1. An air pulse generator comprising:
an air chamber shell having a plurality of diaphragm openings and means for smoothing air flow between the diaphragm openings;
a diaphragm motor mounted on the air chamber shell;
a plurality of diaphragm assemblies within the diaphragm openings, the diaphragm assemblies being powered by the diaphragm motor; and wherein the diaphragm assemblies balance vibration forces produced by the air pulse generator.
2. The generator of claim 1 wherein the means for smoothing air flow includes at least one curvilinear wall on the air chamber shell.
3. The generator of claim 2 wherein the curvilinear wall has a substantially parabolic shape.
4. The generator of claim 2 wherein the curvilinear wall has a substantially circular shape.
5. The generator of claim 1 wherein the plurality of diaphragm assemblies further comprises:
a diaphragm plate;
a diaphragm seal; and wherein the diaphragm plate tips inwardly and outwardly as it reciprocates in and out of the diaphragm opening, and the diaphragm seal fluidly seals the diaphragm opening.
6. The generator of claim 5 wherein the plurality of diaphragm assemblies further comprises:
a first diaphragm assembly which reciprocates within a first diaphragm opening and a second diaphragm assembly which reciprocates within a second diaphragm opening, wherein having a pair of diaphragm assemblies balances vibration forces produced by the air pulse generator.
7. The generator claim 1 and further comprising:
a housing encompassing the air chamber shell;
at least one support mounted inside the housing for supporting the air chamber shell; and wherein the support absorbs noise and vibration produced by the air pulse generator.
8. The generator of claim 7 wherein the support is shaped to conform to surrounding parts.
9. The system of claim 8 wherein the support is comprised of nitrite having a durometer of 60 +/- 5.
10. The system of claim 8 wherein the support is comprised of closed cell foam tape.
11. The system of claim 8 wherein the support is comprised of vinyl-type foam.
12. The system of claim 7 wherein corners and edges of the housing are rounded.
13. An air pulse generator comprising:
a housing;
an air chamber assembly within the housing for producing a pressure having a steady state component and an oscillatory component, and wherein the air chamber assembly further comprises:
means for balancing vibration forces;
means for smoothing air flow; and means for supporting the air chamber assembly within the housing to reduce noise and vibration.
14. A method of providing high frequency chest wall oscillation to a patient, the method comprising:
selecting a mode corresponding to a protocol;
generating oscillating pneumatic pressure according to the protocol, the oscillating pneumatic pressure having a steady state pressure component and an oscillatory pressure component;
applying an oscillating force to a chest of the patient according to the protocol, the oscillating force having a steady state force component corresponding to the steady state pressure component, and an oscillatory force component corresponding to the oscillatory pressure component; and wherein the mode is one of a plurality of modes stored within an air pulse generator which generates the oscillating pneumatic pressure.
15. A method of providing high frequency chest wall oscillation to a patient, the method comprising:
storing a plurality of modes, each mode corresponding to a protocol for performing the high frequency chest wall oscillation;
identifying a protocol as a function of a selected mode;
generating oscillating pneumatic pressure according to the protocol, the oscillating pneumatic pressure having a steady state pressure component and an oscillatory pressure component; and applying an oscillating force to a chest of the patient according to the protocol, the oscillating force having a steady state force component corresponding to thesteady state pressure component, and an oscillatory force component corresponding to the oscillatory pressure component.
16. The method of claim 15 wherein generating the oscillating pneumatic pressure according to the protocol further comprises:
changing oscillation frequency of the oscillating pneumatic pressure over a time interval while maintaining a bias line pressure.
17. An air pulse generator with an improved user interface, the air pulse generator comprising:
an air pulse module for producing oscillating pressure in a plurality of modes;
a control for controlling operation of the air pulse module, storing programs for each mode that control the air pulse generator to operate according to a corresponding protocol for each mode and responding to inputs for selecting modes; and a user interface for entering inputs to the control for selecting a mode such that the protocol corresponding to a selected mode is automatically performed by the air pulse module.
18. An air pulse generator with an improved user interface for a chest wall oscillation system, the air pulse generator comprising:
an air pulse module for producing oscillating pressure;
a control board having a microprocessor for storing a plurality of modes that control operation of the air pulse module; and a user interface for selecting a mode stored in the microprocessor such that a protocol defining the mode is automatically performed by the air pulse module.
19. An air pulse generator comprising:
an air pulse module, wherein the air pulse module produces a pressure having a steady state pressure component and an oscillating pressure component, the oscillating pressure component superimposed with the steady state pressure component; and wherein the air pulse generator has a weight of less than about 30 pounds and is less than about 14 inches wide, less than about 10 inches high and less than about 10 inches deep.
20. An air pulse generator for use in a chest wall oscillation system, the air pulse generator comprising:

an air pulse module at least partially comprised of plastic and having a shell with a volume of about 130 in3;
a pair of balanced diaphragm assemblies on the air pulse module for pulsing air; and means for dissipating heat produced by the air pulse module.
21. The air pulse generator of claim 20 and further comprising:
a diaphragm motor driving the diaphragm assemblies, the diaphragm motor having a flywheel with a diameter less than about 4 inches.
22. A method of providing high frequency chest wall oscillation to a patient, the method comprising:
generating oscillating pneumatic pressure having a steady state pressure component and an oscillatory pressure component;
applying an oscillating force to a chest of the patient, the oscillating force having a steady state force component corresponding to the steady state pressure component, and an oscillatory force component corresponding to the oscillatory pressure component; and wherein oscillation frequency of the oscillating pneumatic pressure changes over time according to a predetermined pattern, while maintaining the steady state pressure component.
23. The method of claim 22 wherein generating the oscillating pneumatic pressure which changes according to a predetermined pattern further comprises:
identifying an oscillation frequency range, having a lowest frequency and a highest frequency, at which the high frequency chest wall oscillation is applied;
increasing, continuously at a predetermined rate, oscillation frequency from the lowest frequency to the highest frequency and decreasing, continuously at the predetermined rate, the oscillation frequency from the highest frequency to the lowest frequency, wherein the increasing and decreasing is defined as a cycle; and repeating the cycle.
24. ~The method of claim 23 wherein the predetermined pattern continues for a whole treatment period.
25. ~The method of claim 23 wherein identifying the oscillation frequency range further comprises:
choosing one of a plurality of oscillation frequency ranges.
26. ~The method of claim 25 wherein the oscillation frequency ranges further comprise:
a HIGH range being about 10 Hz.to about 20 Hz;
a NORMAL range being about 7 Hz to about 17 Hz; and a LOW range being about 5 Hz to about 15 Hz.
27. ~The method of claim 23 wherein the cycle has a duration of about minutes.
28. ~The method of claim 22 wherein generating the oscillating pneumatic pressure which changes according to a predetermined pattern further comprises:
identifying an oscillation frequency range, having a lowest frequency and a highest frequency, at which the high frequency chest wall oscillation is applied; and increasing, step-wise at a predetermined rate, oscillation frequency from the lowest frequency to the highest frequency.
29. ~The method of claim 28 and further comprising:
decreasing oscillation frequency from the highest frequency to the lowest frequency, wherein the increasing and decreasing is defined as a cycle; and repeating the cycle.
30. ~A method of providing high frequency chest wall oscillation to a patient, the method comprising:
generating oscillating pneumatic pressure having a steady state pressure component and an oscillatory pressure component, the oscillating pneumatic pressure having a first oscillation frequency and a second oscillation frequency;
applying an oscillating force to a chest of the patient, the oscillating force having a steady state force component corresponding to the steady state pressure component, and an oscillatory force component corresponding to the oscillatory pressure component; and alternating the oscillating pneumatic pressure between the first oscillation frequency and the second oscillation frequency during high frequency chest wall oscillation.
31. ~An air pulse generator comprising:
an air chamber shell having at least one diaphragm opening;
a diaphragm motor mounted on the air chamber shell, the diaphragm motor having an electronic control which supplies drive signals to the diaphragm motor as a function of instantaneous angular velocity of a plurality of rotational positions during each revolution to maintain angular velocity despite varying load on the diaphragm motor; and at least one diaphragm assembly oscillating within the diaphragm opening, the diaphragm assembly being powered by the diaphragm motor.
32. ~An air pulse generator comprising:
an air chamber assembly for producing a pressure having a steady state component and an oscillatory component, and wherein the air chamber assembly includes at least one diaphragm assembly powered by a diaphragm motor;
means for sensing angular rotational position of the diaphragm motor;
means for determining angular velocity of the diaphragm motor at a plurality of sensed rotational positions during each revolution of the diaphragm motor; and means for controlling drive signals to the diaphragm motor as a function of the angular velocity determined.
33. ~An air pressure generator for oscillatory chest wall compression,~
the air pressure generator comprising:
means for producing an air pressure;
means for driving the means for producing;
a first power supply capacitor;
a second power supply capacitor;
a first charging circuit for charging the first power supply capacitor from a first phase of AC input power;
a second charging circuit for charging the second power supply capacitor from a second phase of AC input power;
a switching power supply for producing current pulses derived from the first capacitor during the second phase and from the second capacitor during the first phase;
an output voltage capacitor for providing a drive voltage to the means for driving; and means for controlling the drive voltage by selectively supplying the current pulses to the output voltage capacitor.
34. ~An air pulse generator comprising:
a blower for producing a steady state air pressure component;
a first motor for driving the blower;
an air pulse module for receiving the steady state air pressure component and generating a pulsed air pressure output;
a second motor for driving the air pulse module;
a first motor drive circuit for supplying a first variable voltage drive signal; and a second motor drive circuit for supplying a second variable voltage drive signal.
35. ~An air pulse module for an air pulse generator, the air pulse module comprising:
an air chamber shell having a volume of about 130 in3;

a blower for producing a steady state pressure component within the air pulse module;
a blower motor for driving the blower;
a first diaphragm assembly for producing an oscillating pressure component within the air pulse module; and a second diaphragm assembly for producing the oscillating pressure component with the air pulse module.
36. An air pulse generator comprising:
an air pulse module having an air chamber defined by an air chamber shell, a diaphragm motor and diaphragm assemblies, the diaphragm assemblies oscillating air within the air chamber and wherein the diaphragm motor is mounted to the air chamber shell, the shell being comprised of metal to dissipate heat from the diaphragm motor;
a housing encompassing the air pulse module, the housing having a vent placed such that heat from the diaphragm motor is released through the vent;
a support placed between the housing and the diaphragm motor of the air pulse module, the support shaped to allow air to circulate around the diaphragm motor; and a control board associated with the air pulse module for carrying electronic circuitry controlling the air pulse generator, the control board having means for dissipating heat from the electronic circuitry.
37. An air pulse generator comprising:
an air pulse module having a diaphragm motor;
means for dissipating heat generated by the diaphragm motor;
a control board having electronic circuitry for controlling the air pulse module; and means for internal heat dissipation from the electronic circuitry.
CA2506292A 2002-11-15 2003-11-14 Oscillatory chest wall compression device with improved air pulse generator Expired - Lifetime CA2506292C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2772539A CA2772539C (en) 2002-11-15 2003-11-14 Oscillatory chest wall compression device with improved air pulse generator with improved interface

Applications Claiming Priority (17)

Application Number Priority Date Filing Date Title
US10/298,242 US20040097846A1 (en) 2002-11-15 2002-11-15 Oscillatory chest wall compression device with improved air pulse generator with noise and vibration attenuation
US10/295,782 US7425203B2 (en) 2002-11-15 2002-11-15 Oscillatory chest wall compression device with improved air pulse generator with improved user interface
US10/298,211 2002-11-15
US10/298,267 2002-11-15
US10/298,245 US20040097847A1 (en) 2002-11-15 2002-11-15 Oscillatory chest wall compression device with improved air pulse generator with electronic flywheel
US10/298,272 US7491182B2 (en) 2002-11-15 2002-11-15 High frequency chest wall oscillation apparatus having plurality of modes
US10/298,267 US7121808B2 (en) 2002-11-15 2002-11-15 High frequency air pulse generator
US10/298,167 US7115104B2 (en) 2002-11-15 2002-11-15 High frequency chest wall oscillation apparatus
US10/298,167 2002-11-15
US10/298,242 2002-11-15
US10/298,240 2002-11-15
US10/295,782 2002-11-15
US10/298,245 2002-11-15
US10/298,211 US20040097844A1 (en) 2002-11-15 2002-11-15 Oscillatory chest wall compression device with improved air pulse generator with reduced size and weight
US10/298,240 US20040097845A1 (en) 2002-11-15 2002-11-15 Oscillatory chest wall compression device with improved air pulse generator with vest characterizing
US10/298,272 2002-11-15
PCT/US2003/036569 WO2004045485A2 (en) 2002-11-15 2003-11-14 Oscillatory chest wall compression device with improved air pulse generator

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2772539A Division CA2772539C (en) 2002-11-15 2003-11-14 Oscillatory chest wall compression device with improved air pulse generator with improved interface

Publications (2)

Publication Number Publication Date
CA2506292A1 true CA2506292A1 (en) 2004-06-03
CA2506292C CA2506292C (en) 2012-05-15

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CA2772539A Expired - Lifetime CA2772539C (en) 2002-11-15 2003-11-14 Oscillatory chest wall compression device with improved air pulse generator with improved interface
CA2506292A Expired - Lifetime CA2506292C (en) 2002-11-15 2003-11-14 Oscillatory chest wall compression device with improved air pulse generator

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CA2772539A Expired - Lifetime CA2772539C (en) 2002-11-15 2003-11-14 Oscillatory chest wall compression device with improved air pulse generator with improved interface

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US (12) US7491182B2 (en)
EP (2) EP1569593B1 (en)
AU (1) AU2003290958A1 (en)
CA (2) CA2772539C (en)
WO (1) WO2004045485A2 (en)

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US8038633B2 (en) 2011-10-18

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