US2842123A - Pressurized transfusion apparatus - Google Patents

Description

Juy 8, 1958 LE ROY M. RUNDHAUG 2,842,123

FRESSURIZED TRANSFUSJON APPARATUS FiledMay 25, 195e INVENTozL LeRoY M. Euuomwai ATTOD-N EVS United States Patent O PRESSURIZED TRANSFUSION APPARATUS i Le Roy M. Rundhaug, Pomona, Calif.

Application May 25, 1956, Serial No.` 587,241

1 Claim. (Cl. 128.-214) This invention pertains generally to transfusion apparatus and is more particularly concerned with novel pressurized transfusion apparatus suitable for the transfusion of blood, plasma, saline solutions, and the like.

Generally speaking, the present methods of transfusing blood, plasma, and the like, utilize a gravity-flow system or method. Often such gravity-how method is relatively slow, and in the interim required for such transfusion, the patient may possibly die from shock due to the length of time required.

A primary object of invention is to overcome the shortcomings of the prior art by providing pressurized transfusion apparatus incorporating a pressure container including means for applying internal pressure therein, wherein thepressurized container incorporates a sealed variable-volume impervious liuid chamber member containing the liquid or fluid to be transfused. Also, the variable-volume impervious liuid chamber includes a valve-controlled outlet portion for directing or dispensing the transfusion liquid to a patient, and by pressurizing the fluid container the transfusion fluid may be transfused readily and expeditiously without any danger of contamination of the same. i

A further object of invention in conformance with that set forth is to provide in pressurized transfusion apparatus of the character set forth a collapsible impervious bag constituting the variable-volume fluid chamber wherein said bag includes a nozzle portion incorporating an annular gasket which is secured in sealed relationship on an outwardly-extending threaded collar of the pressure container wherein a tubular coupling member including valve-control means may be readily and expeditiously secured in sealing relationship on said collar.

Another object of invention in conformance with that set forth is to provide pressurized transfusion apparatus of the character set forth which is readily and economically manufactured, easily used, and highly practical, sanitary, serviceable and highly utilitarian for the purpose intended.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a perspective view of the novel pressurized transfusion apparatus;

Figure 2 is a sectional view taken substantially online 2 2 of Figure l with portions broken away, shown in section for clarity; and

Figure 3 is a sectional view taken substantially on line 3-3 of Figure 2.

Referring to the drawings in detail, the novel pressurized transfusion apparatus is indicated generally at and includes apressure container 12 which may be 2 made of any suitable noncorrosive material such as metal,

plastic, etc., and is shown herein to be rectangular in shape, however, any suitable container may be utilized for this purpose, thecontainer 12 including abody portion 14 having extending upwardly from its upper end an integraltubular inlet element 16 which is threaded at 18 at its upper end for receiving thereon a valve-retaininghousing element 20. Thehousing element 20 includes aninternal recess 22 defining a valve seat with which avalve element 24 is engageable, and a suitablecompression spring element 26 extends between a lower surface portion of thevalve element 24 and an upper end portion of thetubular element 16. Thevalve element 24 includes anintegral pin element 28 which may be manually depressed for the purpose of relieving the pressure in thebody member 14. The interior of thebody member 14 defines a pressurized chamber 30. In communication with thetubular element 16 is a laterallyextending attaching tube 32 which may have mounted thereon a suitable pressure-indicating gauge `indicated generally at 34. It is to be understood that any suitable source of fluid pressure may be applied to thehousing member 20. The pressure being utilized maybe that of gas, such as air, Freon, carbon dioxide, etc., or a suitable liquid might also be used.

Extending from thelower Wall 36 of the container is an aperture portion 38 which is surrounded by an annular outwardly-extending threaded collar 40 which is externally threaded at 42.

Contained within the pressure chamber 30 of thepressure container 14 is a llexible impervious collapsible fluid-holding bag 44 which will contain the plasma, blood, or saline solution, for example, used in a transfusion. Thebag 44 is constructed of any suitable material, such as natural rubber, synthetic rubber, plastic, etc. Thebag 44 includes a thickenedtubular nozzle portion 46 which extends through the collar 40 of the pressure container, saidnozzle 46 terminating in an annularsealing gasket element 48 which extends in overlying relationship to the end S0 of the collar 4l).

Secured on the threaded collar 40 by means of an enlarged internally-threadedcap portion 52 is atubular nozzle element 54, the internally threadedcap 52 engaging the sealinggasket 48 of thecollapsible bag 44 and defining a sealed relationship therewith preventing the accidental escape of pressure from the pressure chamber 30 of thepressure container 14. The collapsible bag may be delined as a variable-volume chamber which contains the transfusion lluid.

Thenozzle element 54 has extending therethrough conically-alignedaperture portions 56 and SS for receiving therethrough a conventional valve-control spigot element 60 which controls the dissemination or dispensing of the transfusion fluid.

Thus thecollapsible bag 44 which is sterile may be inserted in thepressure container 14 whereafter the same is filled with the transfusion fluid after which time the spigot or valve-control element 60 is disposed in a closed relationship. The internally-threadedcap 52 is disposed or secured in sealing relationship on thegasket 48 of the collapsible bag and by utilizing a suitable fluidpressure source the interior or pressure chamber 30 of thepressure container 14 is pressurized. Thepressure gauge 34 will apprise the user of the apparatus as to the amount of pressure contained in the pressure chamber 30, and after thecollapsible bag 44 has been exhausted of its transfusion fluid the pressure gauge will indicate a proportionate reduction of pressure within the pressure chamber 30 and thus apprise the user of the Patented July 8, 1958 3 l apparatus as to wheny thecollapsible bag 44 should be relled. l

In the event that a transparent plastic is utilized in thepressure container 14, a user of the apparatus may visually vobserve the amount of transfusion fluid containedr inthe collapsible bag, in the event that the collapsible bag is also comprised of a transparent, plastic.

' Thus there has been disclosed a pressurized transfusion apparatus which fully conforms with the objects of invention heretofore set forth.

i Various positional directional terms such as inner, upper, lower, etc., are utilized herein and have only a relative connotation to aid in describing the device and it is not intended to require any particular orientation with respect to any external elements.

The foregoing is considered-as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention tothe exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling Within the scope ofthe appended claim.

What is claimed is:

Pressurized transfusion apparatus for blood, plasma, saline solutions and the like, comprising a pressure container, a variable-Volume impervious fluid chamber contained in the pressure container for containing a uid to be transfused, said variable-volume chamber member having a valve-controlled outlet portion extending in so sealed relationship from the pressure container for dis- 4 I pensing pressurized transfusion fluid contained in the irnpervious uid chamber member, said pressurized container including an aperture portion extending through a wall portion thereof, an annular externally-threaded collar member surrounding said aperture portion and extending from the pressure container, the variable volume impervious fluid chamber member comprising a collapsible bag, said bag having a nozzle portion extending through the aperture portion of the pressure container and terminating in an annular gasket portion overlying the end of the threaded collar, the valve controlled outlet portion of the variable-volume chamber member comprising a tubular coupling element having an annular internally-threaded cap portion engageable on the threaded collar and clampingly engaging they annular gasket portion of the collapsible bag, and valve means on the tubular coupling element for controlling the dispensing of transfusion uid from the interior of the collapsible bag.

References Cited in the le of this patent UNITED. STATES PATENTS

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