Year: 1887

page_text: [Communicated from abroad by EUGENE E. ALLEN, of Grand Rapids, State of
Michigan, United States of America, Manufacturer.]
I, REGINALD HADDAN of the firm of Herbert & Co., Patent Agents, of 67 Strand,
London, in the County of Middlesex, Civil Engineer, do hereby declare the nature of
this invention, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :--
This invention consists of an elastic tube arranged within a cylindrical case in com-
bination with suitable mechanism to cause a continuous and uninterrupted flow of
fluid or liquid through such tube in either direction, said device being adapted to the
transfusion of blood, also to use as an aspirator or stomach pump, as fully described
herein.
The objects of the invention are accomplished by means of the mechanism illustrated
in the accompanying drawings, in which
Fig. 1 is a rear view of the case with the cap removed, in order to show the working
parts of the device.
Fig. 2 is a vertical sectional view of the case on line x-x of Fig. 1, showing a side
view of the actuating mechanism, in position within the case.
Fig. 3 is a front view of the case closed.
Fig. 4 is an elevation of the cylindrical cap with the elastic tube in place within it.
Fig. 5 is a sectional view of the cap on line y-y of Fig. 4; and
Fig. 6 is also an elevation of the cylindrical cap, with elastic aspirator tube in
place.
Similar letters refer to similar parts throughout the several views.
The construction of this device when used as a blood transfuser, an aspirator or
stomach pump, is the same, excepting larger tubes are used as an aspirator or pump.
A is the small elastic tube used when this device is in operation in transfusing
blood.

page_text: A¹ the elastic tube used in connection with the device as an aspirator, and
A the tube used in connection with the device as a stomach pump.
B is a branch tube, used in connection with the device and connecting the main
tubo with the receiver, when the device is in operation as a blood transfuser.
C is a vent in the receiver D. E is the outer face or dise of the cylindrical cap;
E the cylindrical side of the cap; F a leather or other coating for thio inner surface
of the cylinder E¹, to which the elastic tube is firmly attached. The cap used by me
is made of metal and the inner lining is leather, but the material of the cap is
immaterial, as long as it is of a substance suitable for bolding the tube securely in
place and the lining is not essential, but is desirable. In the aspirator tube I use short
glass connecting tubes G G, in order to examine the motion of the material or
substance which passes through the tube. H is a branch tube on the aspirator, which
I use in connection with a liquid receiver for cleansing the tube. I is a cannula for
insertion into a fluid and is used in connection with the aspirator tube A¹. The elastic
tube is placed within the cap in the form shown in the drawings and securely
attached therein, so that it may be operated upon by the roller or rollers, as herein-
after set forth. The roller J is attached to an arni on one end of the bent lever It M,
so as to turn freely. The bent lever is fulcrumed upon the upper end of spring L, as
shown in Fig. 1. L and L'are springs for holding the roller in contact with the
elastic tube when the device is in operation. K is a brace hinged to the upper end
of L' so as to be raised to the position shown by the solid line in Fig. 1, and to be lowered
to the position shown by dotted lines in the same figure. The springs L and L' may
be bound together by the clasp 2 as shown. I is a shaft, one end of which is journaled
in the front of the case and the other end in the journal box e of the
сар. The
springs Land L' are rigidly attached to this shaft, and together with the other con-
nected parts are revolved with it. P' is a ratchet wheel, rigidly attached to the axle Q,
and O is a dog which engages with the notches on the ratchet wheel. N is a chain or
cord attached to the end of the bont lever R M, and to the axle Q. The function of the
chain N and ratchet wheel, axle. and dog, is to adjust the roller J to and from the
elastic tube. S is a case and hot water reservoir; which supports the cylindrical cap
and nearly surrounds it, as shown in Fig. 1. 3 in Fig. 2 shows the water in the case.
At the bottom of the case is an opening provided with a cork T. The object of this
reservoir is to receive hot water in order to prevent the blood in the tube from becoming
cool while passing from the person supplying the blood to the patient. 4, 4, are the
koy holes for the key that winds the chain N upon the axle Q, and 5 is the crank for
operating the roller J. When a moderate pressure is required upon the tube the
braco K is turned down, as shown by dotted lines in Fig. 1, when the roller receives
the strength of the spring L alone, but when greater pressure is required the brace K
is raised so that it is in contact with the spring L when the roller receives through the
bent lever the strength of both the springs L, L'. In using the smaller tubes the
pressure exerted by one of the springs is sufficient, but in using the larger tubes
the pressure of both springs is required.
As the elastic tubes are attached to the cylindrical tubes for convenience, I have a
cap for each separate tube and place the cap with the tube into the case for use.
Care cannula on blood transfuser tube, and (a cannula on the aspirator tube.
The operation of this invention, when used as a blood transfuser, is as follows :-
First fill the reservoir with water at a temperature of about one hundred and ten
degrees Fahrenheit. Place the cap with the elastic tube in position within the case,
and fill the tube with a weak solution of salt water and the receiver half full of the
same solution; bring the roller to bear upon the tube so as to give it sufficient
pressure. Place a clamp over tho main tube below bifurcation; insert cannula c in
the vein of the patient and cannula e in the vein of the subject (furnishing healthy
blood) without removing clamp from main tube; turn crank until pure blood flows
into the receiver, then transfer clamp to the branch tube without arresting motion of
the crank. The blood now passes, into the vein of the patient at the rate of one ounce
for every twenty rovolutions of the crank, being measured with mathematical
accuracy.

page_text: In using the invention as an aspirator, the cannula C is inserted into the pus sack,
a clamp put upon branch tube H and the contents of the sack drawn out. The
glass connecting tubes G G, allow the operator to see the motion of the matter
removed. After the removal of the pus, place the clamp on the main tube between
the branch tube H and the cannula C and thoroughly rinse the tube with water, then
change the clamp to the branch tube and wash out the pus sack. After this shall
have been done the tube can again be cleansed, and medicated fluid introduced into
the sack. The use of the device as a stomach pump will be obvious to any person
familiar with the use of pumps and need not be described.
Having now particularly described and ascertained the nature of said invention and
in what manner the same is to be performed, I declare that what I claim is :-
1. À cylindrical cap with an elastic tube coiled within the said cap, a roller to pro
duce moving pressure upon said tubo, and mechanism for operating said roller'
substantially as described.
2. In an instrument for the transfusion of blood, the cylindrical cap, the elastic
tube, coiled within the cap, the roll adapted to press upon the tube and give a con-
tinuous forward pressure, the lever M R, with suitable mechanism for adjusting the
roller for greater or less pressure upon the elastic tube, substantially as described.
3. The combination of the cylindrical cap and enclosed elastic tube, and a hot water
reservoir supporting and nearly surrounding said cap, substantially as and for the
purpose set forth.
4. The combination as herein set forth of the elastic tube, coiled within the cylindrical
cap and provided with the glass connecting tube or tubes, one or more, the roll and
the mechanism for operating said roll, substantially as described.
5. The following parts in combination, viz. the cylindrical cap, the elastic tube
coiled within the cap, the roller adapted to produce the moving pressure upon the tube,
the springs for regulating the pressure, the brace for connecting and disconnecting the
spring, the centre standard for supporting the springs, the ratchet wheel and dog and
axle with chain for adjusting the roll to the elastic tube, substantially as described.
Dated this 28th day of June 1887.