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Патент USA US2131516

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sept- 27, ‘1938.
H. LEFFER'IA ET A1.
‘
2,131,516
PHARMACEUTICAL APPARATUS
Filed Jan. 51, 1956
~
1N VENTOR5
HERMAN LEFFE'RT "M
$72442
ATTORNEYS
Patented Sept. 27, 1938
2,131,516
UNITED STATES igPATENT't
OFFICE A
2,131,516
PHARMACEUTICAL APPARATUS
Herman Le?’ert and Edward E.
Cleve
land, Ohio, assignors, by mesneWoldman,
assignments, to
harmaceutical Company,
Inc., New
N. Y., a corporation of New York
Application January 31, ‘1936, Serial No.
'10 Claims.
This invention relates to a
York,
61,783 ‘
(Cl. 128-—_225)
a flask without mixing with any liquid that is
utilized for producing the suctio
.
.
_
’
,
Referring now to the vdrawing, Fig. 1 shows
one form of apparatus for carrying out our in
trating the operation of the apparatus shown in
Fig. 2 for withdrawing gas from the stomach of a
food into the patient.
We have found that
patient.
'
'10
15'
“15
bed and above the level of the
rate of ?ow.
An object of our invention,
In such illustration, the
vide an apparatus, which will
ing short of the bottom thereof.
An intermediate, or air ?ask I4 is disposed be
side the medicine ?ask and is connected thereto
by a tube l5. The ends of the tube I5 terminate
level of the material in a reservoir;
A device which has been used for rectal feeding
which enters through a tube
2|, a valve 22 being used for 20 from a reservoir
controlling the rate
of ?ow.
At the start
medicine is placed in
40
thereof. Consequently there is no danger of dis
charging an excessive quantity into the patient
at any time.
i
A further advantage of our apparatus is the fact
that it
’
50
material to be mixed with water or other liquid
that is used to create the suction. ‘In our appa
ratus, the extracted material can be collected in
It. By adjusting the valve 22
any desired number of drops per minute will
enter 56
2,131,516
2
the ?ask l4, and the corresponding volume of
liquid will be dispensed from the ?ask l3. If de
sired, the discharge tube may be temporarily dis
connected from the stomach tube during the
syphoning action, so as to prevent the ?ow of an
excess quantity of medicine into the patient, but
as soon as the medicine ?ows at the same rate at
which water enters the ?ask I4, the discharge
tube is connected to the stomach tube. Such dis
amount to drop from the container 31 into the
compartment 34. In this way, there is a con
stant head in the compartment 35 as a result of
which the adjustment of the valve 45 maintains
a uniform low rate at all times.
As soon as the material in the ?ask 30 is dis
a larger quantity of liquid than the ?ask 30 so -"
that there is ample liquid in reserve to assure a
discharge of the entire contents of the ?ask.
There is a slight difference in the operation of
the apparatus illustrated in Fig. 1 from that il - 5
lustrated in Fig. 2 in that no syphoning action
in the apparatus of Fig. 2 occurs at the time the
I will not be objectionable.
As soon as the level of medicine in the ?ask l3
drops below the entrance in the discharge tube,
15
then the valve 22 is closed, the reservoir 2| and
the ?ask l3 are re?lled and the ?ask I4 is emptied.
Ordinarily, the ?ask l3 holds a su?icient quan
20 a period of twenty-four hours.
(11
charged, the ?ask may be re?lled, the compart
ment 33 drained, and the container 31 re?lled.
In practice, the container 31 is arranged to hold
connection is not necessary in all cases, for it
medicine used is not harmful, the delivery of an
excess quantity for a very short period of time
tity of medicine for permitting medication for
_
dispensing operation is initiated. Furthermore,
there are less connections in which air leaks may
ti’:
’ occur.
-
To minimize the number of connections and
thereby to avoid the possibility of air leakage
into the vacuum line, and at the same time to
vWhile we have explained our invention in con
nection with stomach medication, it is apparent
that the apparatus may be used for rectal feed
ing, in which case the stomach tube is replaced
by a rectal tube. The apparatus is likewise well
eliminate the necessity of utilizing a ?uid under adapted for use as a suction pump to remove gas'
pressure
to start the ?ow of material into the and liquid material from the stomach in post
25
dispensing tube, we have shown a modi?cation of operative treatment. To use the apparatus for’
our invention which is illustrated in Fig. 2. In the latter purpose, it is only necessary to connect
such modi?cation, the material to be dispensed it as shown in Fig. 3 and to have the ?ask 30
is placed in a container 30 which has a discharge
~empty and the compartment 33 ?lled with water.
'
30 tube 3| leading from the bottom thereof. '
The valve 46 is closed, the valve 32 is fully opened,
A valve 23 in the discharge tube prevents the and then the valve 4| is adjusted so as to allow
?ow of material therefrom until the apparatus liquid to drain from the compartment 33 at the
is in condition for operation. The ?ask 30 has desired rate. As the level of liquid in the com
a stopper 25 into which a tube 32 extends. The partment 33 drops, gas or liquid contents are
?ask end of the tube terminates above the level drawn into the ?ask 30 to replace the liquid which
of the material-in the ?ask while the opposite end is drained from the compartment 33.
of the tube is in communication with an air tight
While we have shown in each modi?cation an
chamber 33. The chamber or compartment 33 apparatus wherein a partial vacuum is utilized for
may be formed within a container 34 which has restraining the rate of ?ow, and have illustrated 40
another compartment 35 in which water or other apparatus by means of which the volume of air in
liquid can be held. A gas and liquid tight parti
the reservoir space above the liquid is auto
tion 36 separates the two compartments. The
container 34 is illustrated as supporting a con
tainer 31 which is likewise adapted to hold water,
and which is provided with a discharge opening
45
38 in the bottom thereof. A ?oat controlled valve
40 is carried by the container 31, and is adapted
to control the ?ow of water through the open
ing 38 from the tank 31 into the tank 34, the
adjustment being such that the level in the tank
34 is maintained at the same position at all
times.
.;
At the start of the operation, the compart
ment 33 is empty, and the valve 4| in the drain
55
conduit 42 is closed. Accordingly,‘ as soon as the
stomach tube is connected‘ to the discharge tube
3|, the valve 23 is opened, and the material in
the ?ask 30 starts to ?ow and to rarify the air
in the compartment 33.‘ As soon as the air is
rari?ed to the point where it will support the
head of material in the ?ask, the ?ow ceases,
and thereafter, it is allowed to continue only
in accordance with the rate at which air in the
compartment 33 is displaced.
Such displace
65 ment occurs by allowing water to flow from the
compartment
35 into the compartment 33
through a by-pass 45 that is controlled by a valve
46. A portion of the by-pass comprises a glass
tube by means of which the number of drops per
minute can be observed. The rate of ?ow from
70 the compartment 35 to the compartment 33 is
therefore, the identical rate at which material is
allowed to flow from the ?ask 30.‘
As soon as liquid ?ows from the compartment
15 35, the ?oat controlled valve 40 allows the same
matically varied so as to assure a continuous
?ow at a uniform rate, nevertheless we may, if
desired, eliminate the water reservoir, as well as 4
the intermediate compartment into which the
water is allowed to drip, and vent the vacuum
space by means of the valve 46. The valve may
be adjusted so as to bleed into the vacuum space
a very small quantity of air which acts as a vent
to allow the liquid to flow out of the container.
The valve may be opened to any desired degree
so as to regulate the rate of ?ow.
An important advantage of our invention is
the fact that material may be introduced into a 5 5
patient automatically at a constant predeter
mined rate. This is valuable in the treatment of
stomach ulcers, as it permits medication without
interfering with the normal introduction of food
through the oral cavity. The apparatus is quite 60
simple in arrangement and compact in size and
is capable of being readily cleaned and sterilized
for repeated use.
‘
We claim:
1. In combination, a container for storing ma 65
terial in liquid form, a discharge conduit lead
ing therefrom, a vacuum chamber in communi
cation with the container above the level of liquid
therein, means for introducing a liquid into the
chamber to displace the space occupied by a
quantity of air therein, and a valve for control
ling the rate of ?ow into the chamber whereby
liquid from the container will be proportionately
released.
2. In combination, a container for liquid, 9. 7.
2,181,516.
discharge time leading therefrom, a valve for
Cl
3
controlling the flow through the discharge tube,
whereby the material is caused to ?ow drop-by
a vacuum chamber, a tube connecting the vacu
um chamber to the space above the liquid in the
the flow of liquid.
container, a liquid reservoir, a conduit connecting
the reservoir to the vacuum chamber so that
liquid may ?ow from the reservoir into the
chamber to displace the space occupied by the
air therein, and a valve for controlling the rate
10 of flow in the last named conduit whereby liquid
from the container will be proportionately re
leased.
3. In appar-atus of the character described,
comprising in combination, a container for liquid
drop in substantially volumetric equality with
.
7. An apparatus for dispensing material, com
prising a container for material, a discharge con
duit leading therefrom, means for maintaining a
?ow of material therefrom, a second container
in communication with the space in the first 10
container and means for modifying the volume
of air under said vacuum by admitting a liquid
into the second container, drop by drop, whereby
material, a discharge conduit leading therefrom,
the discharge of material from the ?rst container
a vacuum chamber in communication with the
15
into the second container.
8. An apparatus for dispensing liquid material, -
space above liquid in the container, a reservoir,
the chamber being adapted to receive a liquid
from the reservoir to displace the space occu
pied by the air therein said chamber having a
capacity greater than the material in the con
tainer, and means for controlling the rate of
?ow‘of liquid into the chamber whereby liquid
is substantially identical to the ?ow of liquid
drop by drop, for medication or feeding pur
poses, comprising in combination, a container
for storing‘ the material, a discharge conduit
leading therefrom, means for maintaining an
air-tight seal within the container so as nor
from the container will be proportionately re-‘ ‘‘ mally to prevent the ?ow of material therefrom,
an air-tight compartment in communication
25 leased.
4. An apparatus of the character described, with the container and means for ?owing liquid 25
drop by drop into the compartment, whereby
comprising in combination, a container for ma
the discharge of material from the ?rst contain
terial that is to be dispensed, a discharge con
er is substantially identical to the flow of liquid
duit leading from the container near the bot
30 tom thereof, a receptacle, a reservoir positioned into the second container.
9. An apparatus of the character described,
thereabove and adapted to hold liquid, the res
ervoir having an opening through which liquid comprising in combination a container for liquid
may ?ow into the receptacle, a ?oat controlled material, a- discharge conduit extending down
valve for regulating the ?ow from the reservoir wardly into the container and having the en
into the receptacle so as to maintain a uniform trance thereto below the level of liquid therein
level of liquid at all times in the receptacle, an and having the discharge end thereof positioned 35
air chamber at a lower level than the receptacle, below the entrance end,'a second container in
there being a passageway for liquid to flow from communication with the ?rst container above
the level of the liquid therein, and means for
the receptacle to the chamber, a valve for con
40 trolling the last named ?ow, and means for maintaining a partial vacuum in thespace above
the material in the ?rst container so as normally
providing communication between the air cham
ber and the space in the container above the to prevent the flow of material therefrom, and
liquid.
5. In a device of the character described, the
45 combination of a container for holding liquid,
a discharge conduit leading from the container
so that liquid may ?ow by gravity therefrom,
means for controlling the rate of flow, said means
comprising a member having a lower air com
50 partment, an intermediate liquid compartment,
and a surmounting reservoir, there being a
passageway between the reservoir and the inter
mediate compartment, and another passageway
from the intermediate compartment to the air
55 compartment, means for adjusting the rate of
flow from the intermediate compartment to the
air compartment and means for maintaining a
uniform head of liquid in the intermediate com
partment.
60
5
partial vacuum in the space above the material
in the container, so as normally to prevent the
6. A method of dispensing material, drop by
drop, for medicationor feeding purposes, com
prising utilizing above the material a partial
vacuum, which normally prevents the flow of
material, modifying the volume of air under said
65 vacuum, by utilizing a drop-by-drop flow of liquid
other than the material in said partial vacuum,
means for ?owing liquid drop by drop into the
second container whereby the discharge of ma
terial from the ?rst container is substantially
identical to the ?ow of liquid into the second
45
- container.
10. A device of the character described, com
prising in combination, two containers, each hav
ing a stopper, one of the containers having liquid
therein and having a conduit extending through
the stopper for conveying material therefrom, 50
the entrance to the conduit being below the level
of the liquid therein, and the other container
having a conduit extending through the stopper
for introducing liquid thereinto, there being a
third conduit having its ends projecting through 55
the respective stopper , means for maintaining
a partial vacuum within the two containers so
as normally to prevent the flow of liquid from
one of the containers and means for admitting
a liquid into the other container drop by drop 60
whereby the discharge of liquid from the ?rst
container is substantially identical to the ?ow
of liquid into the other container.
HERMAN LEFFERT.
EDWARD E. WOLDMAN.
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