U.S. patent number 3,669,097 [Application Number 04/843,894] was granted by the patent office on 1972-06-13 for lung exercising apparatus and method.
Invention is credited to Edward Fitz.
United States Patent |
3,669,097 |
Fitz |
June 13, 1972 |
LUNG EXERCISING APPARATUS AND METHOD
Abstract
A device and method for increasing the capacity and strength of
lungs having an expansible bellows chamber, an inlet to the chamber
connected to a conduit, a mouthpiece at the end of the conduit for
breathing into it, and a selectively adjustable valve in the
conduit for constricting the passage from the mouthpiece to the
inlet, whereby a force in excess of the normal pressure developed
by the lungs is required to expand the bellows, and an outlet for
said chamber with a valve and variable control therefor adapted to
open the outlet when the bellows has been expanded a preselected
amount.
Inventors: |
Fitz; Edward (Ardmore, PA) |
Family
ID: |
25291267 |
Appl.
No.: |
04/843,894 |
Filed: |
June 19, 1969 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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680657 |
Nov 6, 1967 |
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Current U.S.
Class: |
600/541 |
Current CPC
Class: |
A61B
5/093 (20130101); A63B 23/18 (20130101) |
Current International
Class: |
A61B
5/093 (20060101); A61B 5/08 (20060101); A63B
23/00 (20060101); A63B 23/18 (20060101); A61b
005/08 () |
Field of
Search: |
;128/2.08,2.07,25,145.6-145.8 ;272/57 |
References Cited
[Referenced By]
U.S. Patent Documents
Other References
Greer, J. R., et al., British Journ. of Anesthesia, (1958) 30, 32,
(pp. 32-36) .
The Lancet, Feb. 13, 1960, p. 369.
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Primary Examiner: Howell; Kyle L.
Parent Case Text
This application is a continuation-in-part of Ser. No. 680,657
filed Nov. 6, 1967 now abandoned.
Claims
I claim:
1. A lung exercising device comprising an expansible chamber, said
chamber having inlet and outlet openings to permit the passage of
gaseous fluid into and out of said chamber, means coupled to said
chamber for sensing expansion of said chamber to a predetermined
volume, an inlet conduit connected to said inlet opening, an inlet
valve in said inlet conduit, said inlet valve being movable in a
range between open and closed positions, first means for yieldably
retaining said inlet valve in its open position to permit gaseous
fluid to enter said chamber, restraining means to act oppositely of
said first means for selectively urging said inlet valve through
said range toward its closed position, an outlet valve, said outlet
valve being connected to said outlet opening, actuable means
coupled to said outlet valve, and said actuable means is operative
to open said outlet valve when said sensing means senses said
predetermined volume so that said gaseous fluid is exhausted from
said chamber.
2. A lung exercising device in accordance with claim 1 wherein said
inlet valve includes a vertically disposed, elongated stem, with
said valve stem said restraining means include a plurality of
weight means associated with said weight means being operative to
selectively displace said elongated stem in response to the weight
of said weight means.
3. A lung exercising device in accordance with claim 1 including a
mouthpiece, a conduit connecting said mouthpiece to said inlet
valve, and a pressure gauge connected between said inlet valve and
said mouthpiece.
4. A lung exercising device in accordance with claim 3 wherein said
conduit connecting said mouth piece to said inlet valve defines an
aperture connecting its interior with the atmosphere, said aperture
being disposed intermediate said pressure gauge and said mouth
piece, and means for selectively closing said aperture.
5. A lung exercising device comprising a bellows, said bellows
having inlet and outlet openings to permit the passage of gaseous
fluid into and out of said bellows, an inlet conduit connected to
said inlet opening, an inlet valve in said inlet conduit, said
inlet valve being movable in a range between open and closed
positions, first means for yieldably retaining said valve in its
open position to permit gaseous fluid to enter said chamber,
restraining means to act oppositely of said first retaining means
for selectively urging said inlet valve through said range toward
its closed position, a rod connected to said bellows for movement
therewith, said rod supporting trip means, an outlet valve
connected to said outlet opening, said outlet valve being movable
between open and closed positions, an actuator for opening and
closing said outlet valve, first and second spaced switches
operably connected to said actuator for respectively opening and
closing said outlet valve, means for supporting said switches
adjacent said bellows for engagement by said trip means upon
expansion and contraction of said bellows for selectively
energizing and deenergizing said actuator, and at least one of said
switches is adjustably mounted on said supporting means so that its
position can be adjusted with respect to said other switch.
6. A lung exercising device comprising an expansible bellows
chamber, said bellows having a fixed wall and a movable wall and
having inlet and outlet openings for gaseous fluid, a conduit
connecting said inlet to a mouthpiece, an inlet valve in said
conduit for restricting the flow of gaseous fluid into said
bellows, said inlet valve being movable in a range between open and
closed positions, means for normally biasing said inlet valve to
its open position, said inlet valve including a movable portion and
an elongated stem extending therefrom, weight means on said stem
for opposing the force of said biasing means so that said valve may
be selectively moved through said range to its closed position, an
outlet valve movable between open and closed positions connected to
said bellows outlet for venting said bellows to the atmosphere, an
actuator, said actuator being operably connected to said outlet
valve for moving it between said open and closed positions, support
means, first and second spaced switches disposed in spaced linear
relation to the direction of expansion of said bellows on said
support means, trip means connected to said movable wall of said
bellows for engaging and operating said switches when said bellows
expands and contracts, said trip means including a rod positioned
to engage said switches, and at least one of said switches includes
adjustable mounting means for changing its position on said support
relative to said other switch.
7. A lung exercising device comprising an expansible chamber, said
chamber having an inlet and an outlet for gaseous fluid, a conduit,
said conduit having one end connected to said inlet so that gaseous
fluid may be conducted into said chamber, an inlet valve in said
conduit, said inlet valve being movable in a range between open and
closed positions, means for biasing said inlet valve to said open
position; weight means for selectively positioning said valve
against the force of said biasing means in said range to restrict
the flow of gaseous fluid into said expansible chamber, an outlet
valve coupled to said outlet, said outlet valve being operative to
vent said chamber to atmosphere, sensing means for sensing
expansion of said chamber to a predetermined volume, and means for
opening said outlet valve in response to signal means from said
sensing means when said chamber has expanded to said predetermined
volume.
8. A method for increasing the capacity and strength of the lungs
comprising the steps of filling the lungs with air, forcing the air
out of the lungs and through a conduit with sufficient force
against a member in said conduit to dis-place and flow past said
member, said member having means for resisting said displacement,
collecting the air forced out of the lungs and past said member,
measuring the amount of air collected, recording the amount, and
repeating each of the foregoing steps.
9. A method in accordance with claim 8 including the step of
varying the resistance of said means for resisting said
displacement of said member after each repetition of said method so
that the amount of force required to displace said member is
varied.
10. A method of exercising the lungs comprising the steps of
repeatedly exhaling gases from the lungs into conduit means,
utilizing the exhaled gases to open a pressure responsive valve in
said conduit means which is biased to a normally closed position,
utilizing the exhaled gases passing through said valve to expand an
expansible chamber, and opening a second valve disposed before said
pressure responsive valve when the pressure of said exhaled gases
fall below a pressure sufficient to maintain said pressure
responsive valve in an open condition.
11. A method of exercising the lungs in accordance with claim 10
including the step of measuring the volume of gases passing into
said expansible chamber.
Description
This invention relates to a device and method for increasing the
capacity and strength of lungs. More particularly, this invention
relates to a device and method for exercising the lungs and
improving the capacity thereof.
Devices for developing the lungs have been described in the past.
Lung devices known in the prior art are lacking in several aspects.
They may be capable of increasing the strength of exhalation, but
they provide no means for catching the exhaled air to measure any
increase or decrease in capacity or volume. The measurement of
volume may be just as important as developing increased strength in
the lungs. Moreover, it does not follow that developing an increase
in the strength of the lungs results in an increase in volume.
Another disadvantage of devices in the prior art is the absence of
any means for indicating the force required to perform the action.
Yet another disadvantage of such devices is the lack of human
engineering in that they provide no means for creating an incentive
or gauge whereby the user can measure his progress.
The present invention improves upon such prior art devices by
overcoming the disadvantage set forth above and providing
additional novel, unobvious and advantageous features. As stated
above, the present invention increases the strength of exhalation
while at the same time catching the exhaled gases and measuring
their volume to determine any increase or decrease in exhaled
capacity. The exhalation action is resisted by a controllable valve
that restricts a passage so that the lungs must work and thereby
exercise to perform their function. By providing a means to capture
the exhaled air and measure its volume, the present invention
measures the increase in lung capacity as well as variations in
strength of exhalation.
Another advantage of the present invention is the provision of a
means whereby the lungs may develop more contractile strength to be
able to force out more carbon dioxide. It is well known that the
lungs of a human being do not exhaust to their full capacity with
each exhalation. It therefore follows that breathing can be eased
for persons of reduced lung capacity by increasing the percentage
of captured air and carbon dioxide which they are able to exhaust.
This can be done not only by increasing the contractile strength of
the lungs but also by increasing the time period of exhalation. The
present invention provides a means whereby the user may learn to
increase this time period.
Still another advantage of the present invention is to provide a
machine which is capable of providing either an isometric, isotonic
or isometric-isotonic type of exercise.
These and other advantages of the present invention are secured by
providing an expansible chamber in the form of a bellows into which
the user may blow through a connected conduit. An adjustable valve
designed to restrict the opening in the conduit is positioned
between the inlet to the expansible bellows chamber and the
mouthpiece of the conduit. By adjusting the opening in the valve,
the amount of force required to expand the bellows can be increased
or decreased. A pressure gauge is also provided in the conduit
between the valve and the mouthpiece. This pressure gauge
continuously indicates the amount of pressure being applied by the
user and hence is indicative of the strength developed in the
lungs. The outlet of the bellows is controlled by a solenoid valve
which opens and closes in response to the amount of expansion of
the bellows. This control system is designed so that it can be
observed by the user and thereby acts as a mental feedback to
inspire continued effort. The control is designed so that when the
bellows expands to a selected, preset position, the solenoid valve
opens the outlet and permits the bellows to collapse.
For the purpose of illustrating the invention, there is shown in
the drawings a form which is presently preferred; it being
understood, however, that this invention is not limited to the
precise arrangements and instrumentalities shown.
FIG. 1 is a perspective view of a lung device constructed in
accordance with this invention.
FIG. 2 is an enlarged partial transverse sectional view of the
device shown in FIG. 1 taken along the line 2--2.
FIG. 3 is an enlarged partial transverse sectional view of the
device shown in FIG. 1 taken along the line 3--3.
FIG. 4 is an enlarged partial view of the tubing of FIG. 1 showing
the bleed-off line.
FIG. 5 is a sectional view taken along line 5--5 of FIG. 4.
Referring now to the drawings in detail, wherein like numerals
indicate like elements, there is shown in FIG. 1 a lung device
designated generally as 10. As shown, the device comprises a lower
housing 12 and an upper cylindrical housing 14 supported on the top
wall 16. Top wall 16 is removably connected to the remainer of
lower housing 12 as by the screws 18. If desired, resilient legs 22
may be fixed to the bottom of side walls 20.
As shown, the cylindrical wall 24 of upper housing 14 is connected
to the wall 16 by screws extending through the integral flange 26.
Upper housing 14 is closed at the top by a circular top wall 30
which is welded or otherwise attached to the wall 24.
Upper housing 14 contains an expansible bellows 32 which is mounted
on the circular plate 34 which in turn is fixed to the wall 24
above the wall 16. One end of the bellows 32 is attached to the
plate 34 and its opposite end is free to expand within the housing
14 as indicated by the arrow and phantom line. Bellows 32 is
sufficiently airtight to perform the functions of this invention
and is manufactured in any conventional form, such as with a
plastic treated fabric which has been pleated to fold in
accordian-like fashion. The free end of the bellows 32 is closed by
a lightweight plate 36 which is sealed to the pleated wall and
supports the rod 38. Rod 38 extends through an opening in top wall
30 and is guided by the bushing 40. A second rod 42 which acts as a
pointer is fixed in cantilever fashion from the end of rod 38 and
extends parallel to the top walls 30 and 16.
An opening (not shown) is provided in plate 34 to form an inlet to
the interior of bellows 32. The inlet is connected to a conduit in
the form of tubing 44 which is connected to an elbow 46. Elbow 46
in turn is connected to the valve 48 which in turn is connected to
another portion of the conduit in the form of tubing 50. Tubing 50
is connected to pressure gauge 52 and to another portion of the
conduit in the form of tubing 54. Tubing 54 is connected to the
mouthpiece 56. If desired, all the tubing in the apparatus may be
made of a resilient plastic material. In addition, the mouthpiece
56 may also be made of a plastic material.
Valve 48 comprises a valve body 58 which is fixed to the top wall
16 by any conventional means such as a bolt through a stud (not
shown). The valve body 58 is divided into an inlet and outlet
section by the valve seat 60 which extends across it. A valve head
62 is adapted to be seated in an opening in the valve seat 60. The
opening provides the only communication between the two sections of
the valve body 58. Valve head 62 is connected to a valve stem 64
which extends through an opening in the body 48 and top wall 16 to
project above the lower housing 12. The opening in valve body 58 is
sealed by any conventional means such as an O-ring 66. A spring 68
is connected to the base of valve body 58 and to the valve head 62
as shown. Spring 68 is of the expansion type and normally biases
the valve head 62 and stem 68 out of the opening in valve seat 60.
Thus, the valve 48 is normally open.
A flange 70 surrounds and is fixed to the valve stem 64. The flange
70 functions as a platform to support a plurality of weights 72
which may be selectively positioned on the valve stem 64. In the
embodiment shown, two weights 72 are supported by the flange
platform 70. The weights 72 are preferably cylindrical in shape and
provided with central openings which permit them to readily slide
onto the valve stem 64. The unused weights are supported on a
rod-like stem 74 which is supported on a base 76 that in turn is
fixed to the top wall 16 by any conventional means, such as for
example a threaded fastener.
The bias force of spring 68 normally forces the valve 48 completely
open by unseating the valve head 62 from the valve seat 60. In its
open position, there is free passage through the conduit defined by
the mouthpiece 56, tubing 54, gauge 52, tubing 50, valve 48, elbow
46 and tubing 44 into the interior of bellows 32. The bias force of
spring 68 is overcome gradually by adding weights weights 72 to the
valve stem 64. As each weight is added to the valve stem 64, the
opening defined between seat 60 and head 62 becomes more and more
restricted. It therefore becomes more and more difficult for the
user to force air through the conduit into the bellows 32. If
desired, sufficient weight can be applied to the valve stem 64 to
entirely close the valve 48. This also can be done manually by
simply pressing down on the valve stem 64.
In the preferred embodiment, the weights 72 are equal. This allows
the restriction created by valve 48 to be increased in equal steps
so that there is no increase in resistance that makes the forcing
of air into the bellows more difficult than any other. The increase
in resistance created by valve 48 is therefore linear and the user
would know this. This allows the user to mentally know what to
expect with each increase and therefore not become frustrated by
too great an increase.
Gauge 52 is any conventional type of pressure gauge which will
measure and indicate the pressure in the conduit between valve 48
and mouthpiece 56. This pressure is created when the user forces
air from his lungs into the conduit against the restrictive force
of the valve 48. The amount of pressure is indicated on the gauge
dial 78 in any convenient nomenclature, such as pounds per square
inch or some other preselected breakdown. The pressure gauge 52 and
dial 78 permits the user to clearly observe the amount of force
which he is applying. By keeping a record of this force, the user
knows whether he is increasing the contractile force of his
lungs.
The bellows 32 is also provided with an outlet which is connected
through tubing 80 to the solenoid controlled valve 82 which in turn
is vented to atmosphere. Valve 82 is normally closed by the
solenoid 84 which is controlled in the manner explained below.
Electrical power for operating the solenoid 84 is applied through
the conductors 86 which extend through an insulating grommet 88 in
side wall 20 and are connected to the control switch 90. Conductors
86 may be connected to any conventional source such as a 120 volt
alternating current. Control switch 90 is preferably a three
position toggle switch having an off position, an on position and a
release position. In the on position, current from the conductor 86
is fed to the pilot light 92 to indicate that the device 10 has
been energized. Simultaneously, current is also fed to the
microswitches 94 and 96 which control the operation of the solenoid
84 and solenoid valve 82. Microswitch 94 is fixed to an upright bar
98 which is supported on top wall 16. Upright 98 is bifurcated at
its uppermost end so that the microswitch 96 may be adjustably
positioned along its longitudinal axis. Microswitch 96 is
adjustably positioned by any conventional means such as a threaded
screw extending through the bifurcated portion. A plurality of
graduations 100 are formed on the upright 98. Graduations 100 are
preferably scaled to indicate the amount of expansion of bellows
32. The amount of expansion is determined by observing the position
of pointer 42 relative to the graduations 100. The pointer 42 is
displaced by the rod 38 which in turn is moved by the bellows 32.
Accordingly, it is a direct indication of the amount of expansion
of the bellows 32.
When the bellows 32 is collapsed, the pointer 42 will engage the
toggle of microswitch 94 and close the same to cause a relay (not
shown) to close. The relay in turn connects power directly to the
solenoid 84 which closes valve 82 and in turn seals the outlet of
bellows 32. The relay is preferably connected in a circuit which
causes it to latch closed once the microswitch 94 has been engaged
by the pointer 42. Thus, pointer 42 functions to trip both switches
94 and 96.
Therefore, the user may blow into the mouthpiece 56 in the manner
described above. The combination of air and carbon dioxide forced
out of the user's lungs and into the bellows causes it to expand.
The amount of such expansion is of course the measure of the
capacity of the lungs under the particular condition set by a
number of weights 72 on stem 64. As the user forces air and carbon
dioxide into the bellows 32 and causes it to expand, the pointer 42
rises. This continues until the user can no longer cause the
expansion of bellows 32, preferably, until the pointer 42 engages
the toggle of microswitch 96. Thus, it is preferred that the
microswitch 96 be set within the bifurcated portion of upright 98
to a position where the pointer 42 will engage it before the user
has exhausted his lung capacity. When the pointer engages toggle
96, the latching circuit on the relay is open and the solenoid 84
releases valve 82 causing the outlet from the bellows to also open.
The result is that the bellows immediately collapses.
The graduations 100 on the upright 98 permit the microswitch 96 to
be adjusted as explained above. The user can therefore slowly
increase the amount of expansion of the bellows before the valve 82
opens. By keeping a record of the graduations, the user will have a
definite knowledge of how he is improving.
As the user exercises his lungs by continuously exhaling, the
pressure exerted by the user will decrease until weights 72 will
force valve head 62 into contact with valve seat 60. In order to
allow the user the maximum amount of time of exhalation exercise, a
bleed-off line is provided which may be activated when the user no
longer exerts enough pressure to force valve head 62 out of contact
with valve seat 60. This bleed-off line may take the form of a
small opening in tubing 54. Because the opening is of such a small
size, the exhaled gases lying between valve head 62 and mouthpiece
56 will be gradually rather than rapidly vented to the atmosphere.
This allows the user to continue the exhalation process until the
dial 78 slowly reaches its zero marking indicating that atmospheric
pressure exists between valve head 62 and mouthpiece 56.
This bleed-off line may be located in tubing 54 as is shown in FIG.
1. FIG. 4 shows an enlarged partial view of the tubing of FIG. 1
wherein the bleed-off line is contained. FIG. 5 shows a sectional
view taken along line 5--5 of FIG. 4. As shown in FIGS. 4 and 5,
tubing 54 has a small opening 110 contained therein. Port opening
110 is sealed off from the atmosphere by cover 102. Cover 102 is
affixed to tubing 54 by pin 106. Seal 108 insures that the
exhalation gases contained within tubing 54 will not be vented to
the atmosphere by the opening in tube 54 caused by pin 106.
When the exhalation pressure is no longer sufficient to force valve
head 62 out of contact with valve seat 60, the user may rotate
cover 102 about pin 106 in order to provide atmospheric access to
port opening 110. The user may readily rotate cover 102 by making
finger contact with projection 104 thereon.
Two important advantages are secured by allowing the user to
connect the exhalation gases within tubing 54 to the atmosphere
through port opening 110 when the exhalation pressure is
insufficient to displace valve head 62. Firstly, since port opening
110 is of such a size so that the exhalation gases are not
immediately vented to the atmosphere, the user may continue
exhaling until the pressure on dial 78 indicates that only
atmospheric pressure exists between valve head 62 and mouthpiece
56. This gives the user additional time of exhalation exercise.
Secondly, by allowing the user to continue the exhalation exercise,
there is no necessity for the user to psychologically prepare
himself to stop pushing.
Although the bleed-off line as shown is actuated by the user, it is
well within the scope of the invention to have the bleed-off line
actuated by other means. For example, the reduction of pressure in
the line may be utilized to automatically activate the bleed-off
line.
In some instances the user of the machine may not be able to raise
the pointer 42 to a position where it strikes the toggle of
microswitch 96. This may be the result of taking an insufficient
breath or overconfidence in the user's ability. Whatever the
reason, the control switch 90 is provided with a third, release
position which connects the switch 90 in parallel with the
microswitch 96 and unlatches the circuit permitting the solenoid 82
to open and the bellows 32 to collapse. Thus, if the user cannot go
on for some reason, the machine can be reset by moving the switch
92 to release position.
The machine can be used to perform isometric exercises with the
muscles which contract the lungs. This is accomplished by removing
all of the weights from the stem 64 and manually closing the valve
48 by using a finger to force the valve head 62 into the opening in
valve seat 60. In this manner, the user can force air against the
closed valve 48 until the dial 78 on gauge 52 indicates a
particular pressure and then release the valve 48. This isometric
action builds up a strong tensile strength in the muscle tissue
thus allowing an explosive type of contraction when the valve 48 is
opened. This explosive type of contraction is helpful in increasing
the recoil of the lung tissue.
From the foregoing it should be apparent that the apparatus
described herein provides a lung exercising machine which catches
the exhaled gases and gives an indication of any increase or
decrease in volume. The volume of the exhaled gases is of course
directly indicated by the position of pointer 42 in relation to the
graduations 100 when it strikes the microswitch 96. The machine
helps the user increase contractile strength in the lungs and
thereby increase the ability to squeeze out more carbon dioxide
filled gases. Thus, even if the user is not able to increase the
volume of his lungs, he can assist his ability to breathe.
Another advantage of the present invention is that it enables the
user to increase the time of exhalation. Time of exhalation is
directly related to the contractile strength in that it increases
the amount of carbon dioxide filled gases that can be exhausted.
The user may observe the rise of the pointer 42 and and the
indicated pressure on the dial 78. This knowledge, when fed back to
the user, acts as a incentive to continue blowing into the
mouthpiece 56 and therefore increase the time of exhalation.
The present invention may be used in combination with inhalation
devices which meter drugs or other chemicals into the user's lungs.
Thus, both inhalation and exhalation therapy can be simultaneously
applied.
Another advantage of the present invention is that the
adjustability of microswitch 96 permits the user or supervisor to
preset the system so that only a certain volume of exhaled air is
required before the system automatically exhausts. The benefit of
this is that it eliminates any possibility of hyperventilation of
the user's lungs or otherwise results in overexertion.
The present invention may be embodied in other specific forms
without departing from the spirit or essential attributes
thereof.
* * * * *