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Патент USA US2104988

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Jan. 11, 1938.
J. A. HEIDBRINK
7 2,104,988
ANESTHETIZING MACHINE
Filed May 4, 1936
Gas Deliver'l'n a
Machine
20/’
3 Sheets-Sheet 1
Jamll, 1938.
2,104,988
J.'A. HEIDBRINK
ANESTHETIZING MACHINE
Filed May 4, 1936
5 Sheets-Sheet .2
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J. A. HEIDBRINK
2,104,988
ANESTHETIZING MACHINE
Filed May 4, 1936
5 Sheets-Sheet 3
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Patented Jan. 11, 1938
2,104,988 _
UNITED "STATES PATENT OFFICE
2,104,988
ANESTHETIZING MACHINE»
Jay A. Heidbrink, Minneapolis, Minn.
Application May 4, 1936, Serial No. 77,734
‘7 Claims.
My invention relates to anesthetizing machines
and has for its object to provide certain improved
and advantageous features for thattype of gas
administering machine in which mixtures of gases
1 may be supplied to the patient and wherein at
the will of the anesthetist ether vapor may be
added to the mixture of gases. The aforesaid
improvements are applied to a gas-administer
ing machine in which there is a closed circuit,
10 that is where the exhaled gases go through ‘ab
sorber mechanism to remove excess carbon diox
ide therefrom and pass to the rebreathing bag
and thence back to the inhale side and to the
inhaler back to the patient, going through the
ether vaporizer on the way.
Great advantages follow an arrangement ‘of
flow such that the exhaled gases pass through the
ether vaporizer, since such gases are warm and
are not'unreasonably cooled’ by the evaporation
20v of ether into the circuit. It has been found, how
ever, that passing the exhaled gases through the
ether vaporizer has a tendency to condense mois
ture carried by the exhalations'from ‘the patient
and dilute the ether.
This ‘has a double disad
vantage ?since the anesthetist determines the
amount of ether from the liquid seen through
‘the glass ether container, and, further, since
ether diluted with Water will not have the same
capacity for giving 01f its anesthetizing vapors
that the normal pure ether will have. From the
' fact that both the ether and the Water vapor are
colorless the anesthetist will have no way of de
termining with a su?‘icient degree of accuracy
whether the supply of ether in its container is
pure ether or diluted with condensed water.
I have discovered that the advantages of keep
ing the ether vaporizer on the exhale side of the
closed breathing circuit can be retained and the
aforesaid difficulty of diluting the ether in its
40 container be avoided by Passing the exhaled gases
?rst through the absorber mechanism, which not
only will remove the carbon dioxide therefrom
but enough of the excess water vapor carried by
it will also be removed so there will be little or
45 no condensation of such water vapor in the ether
container.
-
It is ‘a principal object of my invention, there
fore, to provide means in a closed breathing ‘cir
cuit, for causing exhaled gases to pass ?rst
through absorber mechanism and then, where
employment of ether is desired, through an ether
vaporizer to the rebreathing bag and the inhale
side of the breathing ‘circuit.
It is a further object of my invention to pro
55 vide in combination with the aforesaid means for
(Cl. 128-203)
controlling the vflow of exhaled gases, a plurality
of containers for soda lime or other carbon diox
ide absorber material secured in the apparatus‘
in such manner as readily to be removed for re
?lling or change of ‘soda lime while another soda
lime chamber may continue to be in use.
Other objects of the invention are to improvev
an anesthetizing apparatus having the features
above de?ned so as to greatly increase its sim
plicity and the ease and e?‘icacy of its operation. 10'
The full objects and advantages of my inven
tion will appear in connection with the detailed
description thereof, and its novel features are
particularly pointed out in the claims.
In the drawings, illustrating an application of L555.
my invention in one form,
Fig. ‘1 is a plan view of anesthetizing apparatus
embodying my invention. Fig. 2 is a sectional
plan view taken on line 2-2 of Fig. 5. Fig. 3 is
a’ sectional plan view taken on line 3—3 of Fig.
5. Fig. 4 is a fragmentary part sectional eleva
tion view takenon line 4-4 of Fig. 1. Fig. 5 is
a sectional elevation view taken on line 5—-5 of
Fig. 1. Fig. 6 is a sectional plan view taken on
line 6-6 of Fig. 5. Fig.7 is a sectional elevation
view taken on line 'l—'! of Fig. 2. Fig. 8 is a side
elevation of my machine with some parts broken
away and in section. Fig. 9 is a sectional plan
view on line 9—9 of Fig. 8. Fig. 10 is a sectional
plan view taken on line l0—l 0 of Figs. 5 and. 8.
30.
As clearly shown in Fig. l, a conduit ll leads
to a gas-delivering machine wherein a mixture
of anesthetizing gases such as carbon dioxide and
oxygen is formed-and delivered to the patient.
From the conduit H a conduit, l2 leads to a 35
valve chamber l3 above the inhale valve 14 of
Fig. 8 and to inhale outlet I5 and inhale tubing
Hi, from where it goes through inhaler valve
mechanism IT to the inhaler mask l8. From the
inhaler mask l8 gas passes through the valve
mechanism I‘! to exhale tubing l9 to conduit 20,
from which it goes to exhale valve chamber 2|
below the valve disc 22 of Fig. 5. As ‘shown in
Figs. 5 and 8, mechanism is provided to close 01f
the exhale valve 22 so that exhalations may go 45
to atmosphere at the inhaler valve H but at the
same time so as to provide safety escape against
building up of excess pressure in the lungs of
the patient. This is effected by means of a
pressure plate 26 held to move freely on stem 21 50
by means of a coil spring 28 around said stem.
The stem 21 is connected at 29 with a rockshaft
30 adapted to be operated by a ?nger lever v3|
whereby the pressure plate 26 is brought in con
tact with the valve disc 22, which is thereby held
2,104,988
2.
ill i
in closed position but capable of moving against
the compression of spring 28. The compression
ers 35 or 36 may be simply and readily with
drawn for re?lling while the other container is
force of this spring is such that release of gas
pressure in the exhale side of the closed breath
ing circuit will be effected before such pressure
reaches a dangerous degree.
From valve chamber 2| a passageway 32 leads
through a valve chamber 33 in a. preferably
in use, in which case of course the ports 68 and
tubular casing member 34-, which at the same
10 time forms a housing ‘for valve mechanism here-V
inafter described, .a' gas passageway .for. exhale
union nut 69, is secured said head casing 68 of
6| are in full register with the openings through
tubular bosses 31 and 38.
Upon the casing 34, angularly disposed in refer
ence to bosses 31, 38, is a third boss 66 to which,
by means of a boss 61 on head casing 68, and a
‘an’; ether‘: vaporizer. The passageway through 10
tubular bosses 66 and 61 opens through port 16,
Fig. 7, into valve chamber ‘II in casing 68. A
gases and. a support for the soda lime containers
35 and 36.
'
51:1
. second port 12 leads from said valve chamber ‘H
to a tubular member 13, Figs. 2 and 8, which in
My novel manner of forming and supportin
15
15 these containers in gas-tight relation ‘with the "*turn‘opefis" into tubular standard 14 having at
valve chambers 33 and 33a’ (for the lower part ,3 itsdower endrebreathing bag 15 and opening at
its upper end into valve casing l3 below valve
thereof) will now need to be described.‘
_,
The casing member 34 carries upper‘andllower' *1: :disc |4‘.~- The ‘valve casing 68 embodies a par
sets of tubular bosses 31, 38, Fig. 5, which, as -_; ,titioning member 16 which separates out of cham 20
20 shown in Figs. 2, 3 and 10 are formed with the “ ber ‘II a gas outlet chamber 11 which’ may be in
members of ‘each, pair ‘extending at right'angles communication‘ with chamber '|| through a port
to each other as indicated ‘at-38 and 38’ of Figs. ~ 18, Fig. 7. The bottom of chamber ‘His in com
2, and 3, and. at 31, '31’ of Fig.‘ 10. Centrally ' munication with an elongated passageway 19
mounted on vertical pins 39 carried in ears 40.
which extends'into the space within ether jar 80
25 on casing 34 are rods 4| . 42, Figs. 2 and‘ 5, which
and has secured thereabout a removable» tube 8| 25
for swinging movement in a‘ horizontal plane.‘
These respective rods extend through tubular
30 passageways 43 and 44',’ Figs. 2, 5 and 10, which
extend‘ across the bodies of the soda lime contain
held between top and bottom plates 84 and 85,
as shown in Fig. 7. The chamber ‘H is provided 30
are positioned midway betweenv bosses 31, 38 and opening through a slot 82 to the interior of a
31', 38' respectively, and which are thus adapted cylindrical vaporizer 83‘ carried by member 8|
ers 35 and 36 and are sealed from the interiors
thereof; The containers“ 35 'and' 36, as clearly
shown in Fig. 5, embody upper and lower cylin-L
35 drical apertured members 45 and 46," respectively,
which are formed with annular ‘seats'provided
with gaskets 41 and“. The swingingpinsl4-l
and 42 have threaded ends 49 adapted to extend
outside of the bodies of containers 35"and 36.
40; Upon these threaded ends 49 are screwed knurled
thumb nuts 50, 5|. ‘ By these meansv the. con
and-formed with a multiplicity of vertical cords
with a port 86 through its bottom and into the
space within ether container 80. Valves 81 and
88 are adapted to engage valve ‘seats at the upper
edges of passageways 86 and 19 to shut these pas
sageways when ether is'not desired. A second 35
valve 89 is secured to the same stem as valve
88 andrisi adapted vto engage a valve seat sur-.
rounding‘ opening .18 to cut off all direct ?ow of
gas from port 10 to port 12 ‘and cause all gas to‘
pass through the ether vaporizer ‘when that is 40
desired.- These valves are controlled by the ro
tainers35 and 36 are’securely' held locked in- gas-:
tary member” to which is secured a handle 9|
ing 34.
89*are operated. With these‘ valves so operated
all of the exhalation gas may go directly without 45
tight relation to the tubular bosses 131.38 of cas-l by means of which the valve members, 81, 88 and
'
Extending through valve'chamber 33-v withinl
casing 34 is a valve-stein 52 upon which ‘are
mounted to rotate therewith upper and 'lower
cup valves 53 and 54. The cup valve' 53 'is
formed with an open top and a'bottom- wall 55'
50 which is imperforate except for a segment port‘
56 and which bottom rests on a partition 51
having a segment port 58~of the same shape
and extent as the segment port 56 in cup valve
53. The cup valve 541s also open at the top‘ and
55 has
‘an imperforate bottom wall 59. As clearly
shown in Fig. 10,'the valve cup 53 is provided
with an upper circular port 60 adapted‘to regis
terpartly with one or the other of the openings
in tubular bosses 31 and 31’ or with both of them
60 in greater or less relative proportions. As shown
in Figs. 3 and 5, the bottom cup valve 54 is simi
larly provided with a circular port 6| which may
open to either of lower tubular bosses 38 or 38'
or to both at the same time ‘in desired relative
65 proportions. The openings or ports 60 and 6| are
in alinement so that the degree of opening of
each into containers 35 or 36, or'both of them,
will be in the same proportional amount. The
containers 35 and 36 are provided with screens
63 over the respective seat rings 45,- ‘and also
with screens'64 across the bottoms~ofthe con
tainers above the cylindrical contact members
and openings 46, and are also provided with screw
passing into the ether vaporizer at all or all of
the'gases may go through the ether vaporizer
or part'of said exhalation gases may go directly
and part ‘go through the ether vaporizer. In
passing through the ether vaporizer some pres 50
sure‘ will be ‘exercised upon the ?exible cords
forming the vaporizer member 83 tending to
push‘those cords together and form not only
a vaporizer member, but an excellent strainer
member to eliminate any dust or other extrane
ous matter which may come through from the
absorber material in the containers 35 and 36
through which, where absorption is employed,
the exhalation gases must pass ?rst before going
to the ether vaporizer. The speci?c arrange
ment of control of gases in the ether vaporizer
and, of the vaporizing member are not claimed in
this application, but form the subject-matter
of my'copending applications Serial Numbers
37,499 and 59,578.' By means of a handle 92 on 65
vertical shaft 52 and pointers 93, 94 movable
therewith and vcooperating with a scale 95, Fig.
1; the valve members 53, 54 may be properly ad
ju'sted to deliver the exhaled gases either directly
to the ether vaporizer or' (the usual manner of 70
operation), ?rst, through one or the other, or
fractionally through both simultaneously of ab
sorber containers 35, 36. The ether in su?icient
quantitiesis readily introduced into the con
_
tainer
jar- »86 through a ?ller funnel 96, Fig. 8, 75
and
closed.“
It
follows
that
either
of
the‘contaim
75
caps 65 by which the containers may befopened
3
2, 104,988
opening through an aperture 91, Fig.‘ 2, into the
chamber ‘ll.
'
The advantages of my invention will be ap
parent from the foregoing description thereof.
The containers for absorber material such as soda
lime are connected in'the system by simple and
ef?cient means which provide for instant and easy
removal of either container. while the other con
tainer is being ?lled, so that the operation of
10' ?lling or renewing one container may go on while
the apparatus is in use. Always, where the ab
sorber material is used, the exhaled gases will
pass through the absorber material before going
to the ether vaporizer, with the result that water
15 carried in the exhaled gases which might be con
densed in the ether vaporizer will be taken out
before such exhaled gases reach the ether vapor
izer and dilution of the ether therein will be
'20
avoided.
I claim:
‘
'
1. In an anesthetizing machine embodying a
closed breathing line and a pair of containers of
absorber material, a vertical passageway in said
breathing line including valve mechanism to cause
25 the exhaled gases to pass through one or the
other or simultaneously through both of said
containers, a second vertical passageway having
an inhale check valve at one end and a rebreath
ing bag at the other, and an ether vaporizer in
30 said breathing line connected with both said ver
tical passageways, whereby exhale gases will pass
to the rebreathing bag on the inhale side of the
breathing line through one or both of said con
tainers ?rst and thereafter through the ether
vaporizer.
2. In an anesthetizing machine embodying a
closed breathing line, a vertical valve chamber in
the exhale side of said line having upper and
lower openings thereinto provided with surround
40 ing circular seats, a container for'absorber mate
rial having'similar and similarly-positioned open
ings and seats, and means for removably clamp
ing the seats of the container to the seats of the
valve chamber to make a gas-tight union of the
45 container with said valve chamber.
3. In an anesthetizing machine embodying a
closed breathing line, a vertical valve chamber in
the exhale side of said line having upper and
lower openings thereinto provided with surround
50 ing circular seats, a container for absorber mate
rial having similar and similarly-positioned open
ings and seats, a swinging pin connected with the
valve chamber, a passageway through the con
tainer adapted to receive said pin, and remov
55 able means on said pin for clamping the seats
of the container to the seats of the valve chamber
to make a gas-tight union of the container with
said valve chamber.
4. In an anesthetizing machine embodying a
closed breathing line, a vertical valve chamber on
the exhale side of said line having a plurality of
similarly-positioned upper and lower openings
thereinto each provided with surrounding circular
seats, a corresponding number of containers for
absorber material having similar and similarly
positioned openings and seats, and means for re
movably clamping the seats of each container to
the sets of seats to the valve chamber to make 10
gas-tight union of the containers with said valve
chamber.
5. In an anesthetizing machine embodying a
closed breathing line, a vertical valve chamber
in the exhale side of said line having upper and 15
lower openings thereinto provided with surround
ing circular seats, a container for absorber mate
rial having similar and similarly-positioned open
ings and seats, means for removably clamping the
seats of the container to the seats of the valve 20
chamber to make a gas-tight union of the con
tainer with said valve chamber, and valve means
in the valve chamber for controlling ?ow of ex
haled gases through said openings and the ab
25
sorber material in the container.
6. In an anesthetizing machine emboding a
closed breathing line, a vertical valve chamber
on the exhale side of said line having a plurality of
similarly-positioned upper and lower openings
thereinto each provided with surrounding circu 30
lar seats, a corresponding number of containers
for absorber material having similar and simi
larly-positioned openings and seats, means for re
movably clamping the seats of each container to
the sets of seats to the valve chamber to make
gas-tight union of the containers with said valve
chamber, and means in the valve chamber for
controlling ?ow of exhaled gases through either
or both said sets of openings and the absorber
material in either or both said containers.
'7. In an anesthetizing machine embodying a
closed breathing line and a container of absorber
material, a vertical passageway in said breathing
line including valve mechanism to cause the ex
haled gases to pass through said container, to go 45
directly past said containen'or to pass partly
through said container and go partly directly, a
second vertical passageway having an inhale
check valve at one- end and a rebreathing bag at
the other, and an ether vaporizer in said breath 50
ing line connected with both said vertical pas
sageways whereby exhaled gases will pass to the
rebreathing bag on the inhale side of the breath
ing line all or part through said container ?rst
and thereafter through the ether vaporizer.
JAY A. HEIDBRJNK.
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