US2093344A - Blood transfusion apparatus - Google Patents

Description

Sept. 14, 1937. B. wA-NDEL I i BLooD TRANsFUsIoN APPARATUS 2 SheetS-Sheet' 1 Filed Feb. 7, 1935 Sept. 14, 1937. B. wANbEL 2,093,344 f l BLOOD TRANSFUSION APPARATUS Filed Feb. 7, 1955 2 sheets-sheet 2i Il. R

Paten-ted sept. 14, 1931 s maar UNTED FATENT O-FFQE f 2,093,344 Q f nLoonl'raansrusioN APPARATUS Barney Wandel, Boston, Mass. i

Application February 7, 1935,` Serial No. 5,449

` Claims. y v(Cl. 103-172J This invention relates to an'apparatus lprimarily adapted for the transfusion ofblood from a donor to the recipient in a continuous stream, and is capable of practical use when operated 5 manually or by power, as double acting'or singley acting.

It is particularly aimed to provide a novelconstruction wherein a control head is provided to which the barrel or barrels are attached, and

which head utilizes valves operating without resort to springs or similar parts.v i

The more specic objects and advantages Will become apparent from a consideration of the description following taken inv connection with accompanying drawings illustrating an opera-v tive embodiment. f

In said dravvings:

Figure 1 is a view in side elevation ofthe'im-I proved transfusion apparatus, i.

2Q Figure 2 isa top or plan View offsaid apparatus, Figure 3 is a central longitudinal sectional View through the apparatus, ..2

Figure 4 vis a cross sectionalview taken onthe line 4 4 of Figure 1, Figure 5 is a cross sectional View taken on the line 5 5 of Figure l, .o v: Figure 6 is a sectional viewtaken on the line 6 6 of Figure 3, vw;L Figure '7 is an enlarged detaillongitudinal sectional view through the. control head and adja-v cent parts, taken on the Vline `l ll of Figure 4, and Figure 8 is a view in longitudinal sectionztaken, on the line 8 3 of Figure 6.

conduit i9 is adapted to be connected and which.

also is to be placed in communication -with lthe blood stream of the donor. Spherical valves 50 are located one in each chamber i4.

Said control head also has communicating outlet chambers 2| in which spherical valves 22 operate. Said valves 22 coact with outlet ports 23 provided through the plates l2. Also provided 55 through the plates l2 are ports 2li through which Referring specifically to the drawings, wherein the blood passes from chambers i4 under control ofvalves 2U.

`.The apparatus has apair of similar barrels or cylinders 25, preferably of glass, about which metalli'crings 26 are attached as'by means-of 5 cement,. and which ringsv at 2l are detachably screw-threaded into the cup-shaped plates I2.

Metallic pistons`28 are slidably disposed within the barrels or cylinders and a rod 2S extends from each piston, being provided with a knob 3Q, 10 preferably screw-threaded thereon as at 3l. Brackets 32 are rigidly fastened to the rods .29

and such brackets 32 are connected by a connectingrod 33 which extends through openings in the brackets at 34, has pins `35 abutting the 15 brackets, and nuts 56 screw-threaded toA the terminals ofthe connecting rod 33. Y

Said plate Il may have an extension as at 31 for connection as by means of a bolt .38 to a bracket 39, of any suitable rform and adapted to 2o secure the apparatus to a table or other support,

The apparatus may be operated manually through-engagement Withkthe knobst. However, thesame may also be operated by power. To this end, an electric'motor lili may be used, which 25 through suitable reduction gearing at 4I and a shaft 4,2.is adaptedto drive an eccentric connectionulnhavingV a pin eccentrically arranged as at 44 engaged in an4 opening i5 provided inthe connecting rod. Asa result, through operation of 30 the motor, fthe connecting rod kSS-will be reciprocated to reciprocate the pistons 2S, Connecting rodali` passes vloosely through Vopening ll in the plate ll.1,

. kAttention is called to the fact that the inlet valves 20 andfoutlet valves 22 coact withwalls inclined toward theirA seats s o that such valves by gravity normally travel toward their seats and are engaged therewith;` hencev pressure isnecessary to dislodge ,the valvesfrom their seats. #1 0r ylresuming.operation of thedevice, operation of thepistons 28 causes the blood to bedrawn into'the chambergi vand thence into vthecharnbers .M, the sameonthe appropriate stroke of thepistons passing-into the-respective barrels or 45,5. cylinders 25 and from..the same on the opposite stroke of thepistons passing through the ports 23 into the recesses-2i land from'the same through ai passage 'lil in an outlet nozzle 48 of the; plate 50 i l, such nozzle having a tube 49 attached thereto and connected with the blood stream of the recipient. As a result the pumping action is double acting and the blood is transfused in a continuous stream.

A stroke indicating mechanism is also provided consisting of a signal member which may Vbe an electric bell 50, or other selected means, in

circuit'through conductor 5| with a switch member 52 mounted on a suitable bracket 53 or other suitable means, 54 designating the other switch member mounted on Vspring arm 55 also mounted on the bracket 53, the arm 55 being in circuit withY the other Yterminal of the alarm through conductor 56. Secured onV shaft 42 is a cam member 51 that by engaging arm 55 moves the switch members 52 and 53 into contact eachhalf stroke Vof rod 33 to Vindicate discharge of the lblood in oneof thebarrels or cylinders 25. VA

suitable source of electric current for the indicating mechanism is provided, such for instance as the battery 58.

Various changes may be resorted to provided they fall within the spirit and scope of the invention. For instance, the apparatus may be operated as a single action pump. To this end,

either of the Vcylinders or barrels 25 is'removed Vand a plug or imperforate plate'screw-threaded into the exposed screw-threads 21. VAs a result, the single barrel andpiston remaining will cause the blood to pass into the barrel through one of the ports 24 and will enter the chamber 2| and be discharged through one of the ports 23. I claim as my inventiom- A Y Y l.V An apparatus ofthe class described comprising a supporting plate having an inlet recess Yand an outlet recess, a disk secured against one side of said plate, -said disk having an inlet portV andan outlet port in communication with said r'" recesses, control valves for said ports retained in and said plate having a portion extending be' yond the cylinder provided with anopening in which the operatingrod s1ides,'the plate thus mountingY the operating rod against movement about the longitudinal axis of the cylinder.-

2. An apparatusV of the class described comprising a supportingV plate havingl inlet and out- Y let recesses, disks secured against opposite sides ofr'said plate, said disks having inlet and'outlet f ports in communication with saidV recesses, control valves for said ports and recesses, cylinders extending from opposite sides of the apparatus connected and supported by said disks at a right angle to the plate, said cylinders being in com-4 munication with said ports, pistons operable in said cylinders, rods extending from the pistons, each rod having a portion Ydisposed exteriorly of its respective cylinder, a bracket connected to.;

each of said portions exteriorly of the cylinders, and an operating rod located exteriorly of the cylinders, said operating rod being slidable relatively to the latter and joining said brackets.

3.An apparatus of the class described comprising a supporting plate having inlet and outlet recesses, disks secured against opposite sides of said plate, said disks having inlet and outlet ports in communication with said recesses, con-- trol'valvesY for said ports and recesses, cylinders extending Yfrom oppositeV sides ofthe apparatus Aeach of said portions exteriorly of the cylinders,

and an Voperating rod located exteriorly of the cylinders, said operating rod being slidable relatively to the latter and joining said brackets, said plate having a portion extending laterally beyond the cylinders provided with an opening through which the operating rod slides, the plate thus mounting the operating rod against movement about the longitudinal axis of the cylinders. Y 4. An apparatus of the `class described comprising a.V supporting plate having inlet and outlet recesses, disks secured against opposite sides of said p1ate,'said,disks having inlet and outlet ports in communication withI said recesses, control valves for said ports and recesses, cylinders extending from opposite sides oi4 the apparatus connected and supported by said disks at a right angle to the plate, said cylinders being in communication with said ports, pistons operable in said cylinders, rods extending from the'pistons,

each rod having a portion disposed exteriorly Y of its respective cylinder, a bracket connected'to each of said portions exteriorly of the cylinders, and an operating rod located exteriorly of the cylinders, said operating rod being slidable relatively to the VVlatter and joining said brackets, said operating rod having an opening, and power means provided with an eccentric'element engaged in said opening.

5. An apparatus ofthe class described comprising a supporting plate Vhaving inlet and outlet recesses, disks securedagainst opposite sides of said plate,`said disks having inlet and outlet ports in communication with saidV recesses, control valves for said Vports and recesses, cylinders ,extending from opposite sides of the apparatus connected and supported by said disks at a right angle to the plate, said cylinders being in com-I munication with said` ports, pistons operable in said cylinders, rods extending from the pistons, each rod having a portion disposed exteriorly of'its respective cylinder, a bracket connected to each of said portions exteriorly of the cylinders.

and an operating rod Ylocated exteriorly ofV the cylinders, said operating rod beingV slidable relatively to the latter and joining saidbrackets.

means removably connecting the operatingrodV Vin said brackets, abutment means on the rod en gaging the brackets, fastenings on the operatingl rod vengaging the brackets, and said plate having a portion extending laterally beyond the cylinders provided with an opening through which the operating rod slides, the plate thus mounting the operating rod against movement about the longitudinal axis of the cylinders. Y Y

BARNEY WANDEL.

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