U.S. patent number 3,782,371 [Application Number 05/257,076] was granted by the patent office on 1974-01-01 for resuscitation apparatus for simultaneous cardiac massage and artificial respiration.
Invention is credited to Rene Derouineau.
United States Patent |
3,782,371 |
Derouineau |
January 1, 1974 |
RESUSCITATION APPARATUS FOR SIMULTANEOUS CARDIAC MASSAGE AND
ARTIFICIAL RESPIRATION
Abstract
A light and self-contained device which allows resuscitation of
an accident victim by a single person, even if inexperienced in
resuscitation techniques. The apparatus has a base on which are
mounted two vertical columns which are sufficiently spaced apart to
admit the chest of a prone person. On the upper portions of these
columns slides a cross-piece which can be clamped on the columns at
an adjustable distance from the base. A vertical cylinder is
mounted below the centre of the crosspiece and in it slides a
piston provided with two piston rods. The upper rod is linked to a
second order lever with which the piston can be reciprocated
vertically. The lower piston rod is provided at its lower end with
a rubber-based plunger for application to the chest of the patient.
The upper end of the cylinder is linked by a pipe to a rubber air
reservoir balloon. The lower end of the cylinder is linked by a
pipe to a bellows made of a flexible, synthetic material. The air
reservoir balloon is connected by a pipe to a face-mask for pumping
air to the patient. The bellows is linked to a pistol with a
manually controlled valve for suction of vomit from the mouth of
the patient. In the piping of the face-mask is situated a safety
valve set for a determined excessive air pressure, and on the pipe
circuit for suction of vomit is placed a vomit reservoir. By means
of T-pieces, the pipes connecting the cylinder to the balloon and
the bellows are connected to a three-way valve on the crosspiece,
allowing the connection to atmosphere of one or the other of these
elements. A movable panel between the columns supports the head and
chest of the patient and movement of the panel allows the plunger
to be situated precisely at the base of the sternum of the patient.
The handle of the lever is adjustable and dynamometric, so that the
force applied to the chest by the plunger can be adjusted to the
size of the rib cage and the age of the patient, to avoid possible
fracture of the ribs.
Inventors: |
Derouineau; Rene (Gradignan,
FR) |
Family
ID: |
9078542 |
Appl.
No.: |
05/257,076 |
Filed: |
May 26, 1972 |
Foreign Application Priority Data
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Jun 7, 1971 [FR] |
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71.21400 |
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Current U.S.
Class: |
601/41;
601/105 |
Current CPC
Class: |
A61H
31/007 (20130101); A61M 16/0009 (20140204); A61H
31/008 (20130101); A61M 16/0078 (20130101) |
Current International
Class: |
A61H
31/00 (20060101); A61h 031/00 () |
Field of
Search: |
;128/28,51,52,53,278 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Trapp; Lawrence W.
Attorney, Agent or Firm: Lorimer P. Brooks et al.
Claims
I claim:
1. Resuscitation apparatus comprising:
a generally horizontal support for a patient;
at least one vertical upright on said support;
a crosspiece mounted on said upright for vertical displacements
relative thereto;
means for locking said crosspiece on said upright at a
predetermined distance from said support;
an air cylinder mounted on said crosspiece for vertical
displacement therewith;
a piston mounted for vertical sliding motion in fluid-tight manner
within said cylinder;
a manually operable actuator mounted on said crosspiece and
connected to said piston for reciprocating said piston within said
cylinder and thereby alternately displacing air between the upper
end of said cylinder and said piston and between the lower end of
said cylinder and said piston;
a piston rod attached to said piston and extending downwardly from
said piston and out of the lower end of said cylinder;
means in said cylinder defining a fluid-tight passage for said
piston rod through said lower end of said cylinder;
a resilient plunger at the end of said piston rod remote from said
piston, for application to the chest of said patient to effect
external cardiac massage;
means defining first inlet and exhaust ports in said cylinder on
one side of said piston and means defining second inlet and exhaust
ports in said cylinder on the opposite side of said piston;
a compressed air reservoir connected to said exhaust port at said
one side of said piston;
a vacuum reservoir connected to said inlet port at said opposite
side of said piston;
a suction device connected by a pipe to said vacuum reservoir;
and
valve means connected to said compressed air and vacuum reservoirs
and operable to place either of said reservoirs separately in
communication with the atmosphere.
2. Apparatus as set forth in claim 1, wherein said actuator
comprises a lever pivoted at one end to said crosspiece and
articulated intermediate its ends to said piston, and further
comprising an adjustable dynamometric handle at the opposite end of
said lever for limiting the force applicable to said lever by force
applied to said handle, whereby the force exerted on the patient
during cardiac massage can be regulated.
3. Apparatus as set forth in claim 1, wherein said compressed air
reservoir comprises a vessel of an elastic material and said vacuum
reservoir comprises a resilient bellows, and further comprising a
vomit receptacle connected to said pipe between said vacuum
reservoir and said suction device.
4. Resuscitation apparatus as set forth in claim 1, wherein said
valve means comprise a three-way valve operable, in one position
thereof, to open one of said reservoirs to the atmosphere, in a
second position thereof, to open the other of said reservoirs to
the atmosphere and, in a third position thereof to prevent
communication of said reservoirs with the atmosphere.
5. Resuscitation apparatus as set forth in claim 1, comprising a
face-mask, a flexible pipe connecting said face-mask to said
compressed air reservoir, and a safety valve disposed on said
flexible pipe between said reservoir and said mask for limiting the
pressure of the air supplied to said face-mask.
6. Resuscitation apparatus as set forth in claim 1, wherein said
suction device comprises a suction pistol having a manually
operable control valve.
7. Resuscitation apparatus as set forth in claim 1, comprising a
return spring disposed and acting between said cylinder and said
lever to return said lever to a predetermined position.
8. Resuscitation apparatus as set forth in claim 1, comprising a
return spring inside said cylinder and disposed and acting between
said piston and said cylinder to return said piston to a
predetermined position.
9. Resuscitation apparatus as set forth in claim 1, comprising two
vertical uprights pivotally mounted on said patient support to
permit folding thereof to respective horizontal positions, said
crosspiece spanning the space between said uprights.
10. Resuscitation apparatus comprising:
a generally horizontal support for a patient;
at least one vertical upright mounted on said support;
a crosspiece mounted on said upright for vertical displacements
relative thereto;
means for locking said crosspiece on said upright at a
predetermined distance from said support;
a cylinder mounted on said crosspiece for vertical displacement
therewith;
a piston mounted for vertical sliding motion in fluid-tight manner
within said cylinder;
a piston rod attached to said piston and extending downwardly from
said piston and out of the lower end of said cylinder;
means in said cylinder defining a fluid-tight passage for said
piston rod through said lower end of said cylinder;
a resilient plunger at the end of said piston rod remote from said
piston, for application to the chest of said patient to effect
external cardiac massage;
means defining first inlet and exhaust ports in said cylinder on
one side of said piston and means defining second inlet and exhaust
ports in said cylinder on the opposite side of said piston;
a compressed air reservoir connected to said exhaust port at said
one side of said piston;
a vacuum reservoir connected to said inlet port at said opposite
side of said piston;
a suction device connected by a pipe to said vacuum reservoir;
valve means connected to said compressed air and vacuum reservoirs
and operable to place either of said reservoirs separately in
communication with the atmosphere; and
a manually operable actuator mounted on said crosspiece and
connected to said piston to produce displacement of said piston
with respect to said cylinder and thereby causing during
displacement of said piston in a first direction a cardiac massage
movement of said plunger and a reduction of the air volume on one
side of said piston and during the return stroke of said piston in
a direction opposite to said first direction a vacuum on said one
side of said piston and a compression of air at said other side of
said piston.
Description
The present invention concerns an emergency resuscitation device,
providing for simultaneous cardiac massage and artificial
respiration at the site of the emergency.
After an accident, drowning, suffocation, electrocution or heart
attack, current techniques call for cardiac massage or artificial
respiration by the mouth-to-mouth (kiss of life) method or by
pneumatic pumping; the two processes are carried out successively
or simultaneously, and necessarily for short periods. Two qualified
persons are required for the application of these methods, and to
obtain a real efficiency their efforts must be synchronized and
conjugated. The cardiac massage is of course an external one
effected by pressing of the chest wall vigourously and at a rate of
60 to 70 times per minute, so as to compress the heart. These
operations can last for half an hour or more, observing as closely
as possible the correct rhythm. This emergency treatment is thus
difficult and exhausting, requiring prolonged effort and
occasionally involving blows which are to be avoided in the case of
cardiac massage, which must be gentle.
If the patient has suffered the initial stages of asphyxiation by
gas or liquid, respiratory movements and pumping of air into the
lungs must be simultaneously provided, at a given rate and for a
given period of time. When resuscitation must be carried out
urgently, the mouth-to-mouth method is indicated, but it is
difficult and unpleasant, both as regards the time required and the
synchronisation with the massage of the heart and the effort
required to overcome the repugnance of contact with a mouth which
may be filled with vomit.
Various devices are known, based on the principle of a plunger
moved mechanically or pneumatically for carrying out the massage.
Some use a pressurised liquid acting on the plunger and serving for
the direction of air into the lungs. These devices are mechanically
complicated, however, and comprise a bulky power source. They do
not provide for synchronisation of the resuscitation processes.
To reduce these disadvantages, the present invention provides a
very light and self-contained device which allows the resuscitation
processes to be safely combined by a single person, even if
inexperienced. A lever linked to a double-acting piston and
cylinder arrangement allows cardiac massage, pumping of air into
the lungs, and suction of vomit to be carried out separately or
simultaneously.
The apparatus is formed by a base plate on which are mounted two
vertical columns, which may be mounted in a hinged manner, and
which are sufficiently spaced apart to admit the chest of a prone
person.
On the upper portions of these columns slides a cross-piece which
may be so mounted that it can be moved out of the way to admit the
body of a patient, and which can be clamped on the columns at an
adjustable distance from the base plate.
A vertical cylinder is mounted below the centre of the crosspiece
and in it slides a piston provided with two piston rods. The upper
rod slides vertically and in fluid-tight manner in the upper
closure of the cylinder and is linked to a second order lever
pivoted to the top of the crosspiece at one end and having a handle
at the other end. With this handle the lever and the piston can be
reciprocated vertically.
The lower piston rod slides vertically and in fluid-tight manner in
the lower closure of the cylinder and is provided at its lower end
with a rubber-based plunger for application to the chest of the
patient.
The upper end of the cylinder is provided with an air inlet valve
and a nozzle linked by a pipe to a rubber air reservoir balloon,
the assembly thus constituting an air pump.
The lower end of the cylinder is provided with an air outlet valve
and a nozzle linked by a pipe to a bellows made of a flexible
synthetic material, the assembly forming a vacuum pump.
The air reservoir balloon is connected by a pipe to a valve on the
handle of the lever while the bellows is connected by another pipe
to a vomit suction valve.
By means of T-pieces, the pipes connecting the cylinder to the
balloon and the bellows are connected to a three-way valve on the
crosspiece, allowing the connection to atmosphere of one or other
of these elements, so putting the corresponding pump out of
service.
The valve on the lever has an outlet for receiving a tube connected
to a face-mask, by means of a quick release joint, for pumping air
to the patient.
The outlet of the bellows is linked by a quick release joint to a
pipe attached to a pistol with a manually controlled valve for
suction of vomit, by means of the bellows, the pistol being placed
in the mouth of the patient.
In the piping of the face-mask is situated a safety valve set for a
determined excessive air pressure, and on the pipe circuit for
suction of vomit is placed a vomit reservoir.
A movable panel of synthetic material is placed between the
columns. The head and chest of the patient being fixed to this
panel, movement of the panel allows the plunger to be situated
precisely at the base of the sternum of the patient.
The handle of the lever is adjustable and dynamometic, so that the
force applied to the chest by the plunger can be adjusted to the
size of the rib cage and the age of the patient, to avoid possible
fracture of the ribs.
A characteristic of the present invention is to provide
resuscitation apparatus for first aid to victims of heart attacks,
suffocation, accidents, drowning, electrocution and the like. The
apparatus is light, self-contained, of certain efficiency, and can
be used by a single person even if inexperienced in the practice of
cardiac massage and artificial respiration.
Another characteristic of the invention is to provide the apparatus
with a base plate supporting two vertical columns which can be
stowed in a horizontal position and which carry at their upper end
portions a cross-piece which can be adjusted relative to the base
plate and clamped: the space between these elements receives the
chest of a patient, supported on a movable panel.
Another characteristic of the present invention is to mount below
the centre of the crosspiece a vertical cylinder in which slides a
piston attached to two piston rods, the upper rod sliding in
fluid-tight manner in the upper closure of the cylinder and the
lower rod sliding in fluid-tight manner in the lower closure of the
cylinder. The free end of the lower rod is provided with a rubber
plunger for external cardiac massage.
Another characteristic of the invention is to link the free end of
the upper rod to a second-order lever supported on the crosspiece,
its free end being provided with a handle for reciprocating the
piston vertically within the cylinder.
Another characteristic of the present invention is to provide the
upper end of the cylinder with an air inlet valve and a nozzle
linked by a pipe to a rubber vessel forming a compressed air
reservoir, and to provide the lower end of the cylinder with an air
outlet valve and a nozzle linked by a pipe to a bellows of a
flexible synthetic material forming a vacuum reservoir.
Another characteristic of the invention is to connect the inlet
pipes of the compressed air and vacuum reservoirs to a three-way
valve mounted on the crosspiece and with which either of these
elements may be put out of service by connecting it to
atmosphere.
Another characteristic of the present invention is to provide at
the outlet of the compressed air reservoir a pipe connected to a
manually controlled valve on the handle of the lever for
controlling pumping of air to the patient by means of a face-mask
coupled to the valve by means of a pipe and a quick release
fastening.
A characteristic of the present invention is to provide in the air
pumping circuit, between the control valve and the face-mask, a
safety valve set for an excessive pressure.
Another characteristic of the invention is to provide on the vomit
suction path, between the quick release fastening and the pistol, a
vomit reservoir.
Another characteristic of the invention is to provide the lever
with an adjustable, dynamometric handle for limiting the pressure
of the rubber plunger on the chest of the patient, according to the
age and physical condition of the patient, so as to avoid if
possible excessive compression of the sternum and rib cage which
can, especially if prolonged, cause fracture of the ribs.
The apparatus is arranged to carry out rapidly and readily all
resuscitation operations, that is to say external cardiac massage,
or pumping of air into the lungs, or clearing the thoracic passages
by removal of vomit which might impede the attempt to reestablish
respiration .
Other characteristics of the invention will emerge from the
following description with reference to the accompanying drawing
which shows schematically and by way of example self-contained
resuscitation apparatus.
In the drawing :
FIG. 1 is a front elevation of the apparatus,
FIG. 2 is a plan view corresponding to FIG. 1,
FIG. 3 is a side view corresponding to FIG. 1.
The base plate 1 of the apparatus supports columns 2 and 3 which
receive on their upper portions a crosspiece 4 which can be
adjusted in height and clamped by means of knurled knobs 5 and 6. A
cylinder 7 in which slides a piston 8 provided with piston rods 9
and 10 is mounted on the apparatus. The lower rod 9 slides in
fluid-tight manner in the lower closure 11 of the cylinder and the
upper rod 10 slides in fluid-tight manner in the upper closure 12.
The lower rod 9 carries a rubber plunger 13 at its free end. The
upper rod 10 is coupled to a lever 14 of which one end is fixed to
the crosspiece 4 by means of a link 15 and the other end is
provided with a dynamometric handle 16 adjustable by means of a
knurled knob 17. The upper end 12 of the cylinder is provided with
an inlet valve 18 and is connected by a pipe 19 to a rubber balloon
20 forming a compressed air reservoir. The lower end 11 is provided
with an outlet valve 21 and is linked by a pipe 22 to the vacuum
reservoir 23. Pipes 19 and 22 are connected to a three-way valve 24
mounted on the crosspiece 4.
The outlet pipe 25 from the compressed air reservoir 20 is
connected to an air pumping valve 26 through a pipe 27 provided
with a safety valve 28 and a quick-release fastening 29. The
fastening 29 receives a pipe 30 leading to a face-mask (not
shown).
The outlet pipe 31 from the vacuum reservoir 23 terminates in a
quick-release fastening for receiving one end of a vomit suction
pipe incorporating a vomit reservoir 33 and whose free end is
attached to a pistol-valve 34 for suction of vomit.
A mobile panel 35 is mounted so as to slide on the base plate 1 and
has a support 36 for the head of a patient, secured to the support
36 by means of a strap attached to hooks 37 and 38.
The columns 2 and 3 carry respective sliding supports 39 and 40 on
which are clamped buffers 41 and 42 for locating the chest of the
patient 43.
If the patient 43 needs combined cardiac massage and air, the
patient is disposed on the panel 35 between the columns 2 and 3,
with his head secured to the support 36 and so that the plunger 13
is above the base of the sternum. The buffers 41 and 42 are pressed
against the sides of the rib cage and the three-way valve 24 is
positioned so that both reservoirs 20 and 23 are in service. The
face-mask is applied to the mouth of the patient and the lever is
manoeuvered to give four successive massages at a rate of
approximately 60 to 70 per minute. The valve 26 is then opened for
three seconds after which the manoeuvre is resumed at the same
rhythm. The rubber balloon 20 is filled with compressed air by the
co-operation of piston 8 and air inlet valve 18. Raising of the
piston and the lever can be assisted by a spring (not shown). At
the same time a partial vacuum is created in the reservoir 23 by
the co-operation of the piston 8 and the air outlet valve 21.
If the mouth or adjacent internal organs of the patient are
obstructed by vomit, the face-mask is lifted and the vomit is
sucked into the reservoir 33 by means of the pistol 34.
If the patient does not require a supply of air the three-position
valve 24 is set so that the vessel 20 is connected to atmosphere.
The pistol 34 can be used, the vacuum reservoir 23 being still in
service.
All operative combinations of the apparatus can be selected by
means of the three-way valve 24.
It will be appreciated that the invention has been described by way
of non-limitative example only, and that various details are
subject to modifications lying within the spirit and scope of the
invention. Thus the columns 2 and 3 might be articulated at their
lower ends so that the patient could be placed directly in the best
position on the mobile panel 35. Alternatively, the columns could
be fixed and the crosspiece 4 could have one end detachable from
the column so that it could be swung out of the way to allow the
patient to be placed on the panel 35, the panel being movable by
means of a suitable known screw or jack device.
* * * * *