US2623522A - Disposable water bag syringe - Google Patents

Description

Dec. 30, 1952 s. L. DIACK 2,623,522

DISPOSABLE WATER BAG SYRINGE Filed Feb. 14, 1948 's Sheets-Sheet 1 VCMJ/M/ 7 TTUF /VZiWE Dec. 30, 1952 s DIA K 2,623,522

DISPOSABLE WATER BAG SYRINGE Filed Feb. 14, 1948 3 Sheets-ShetZ SAMUEL L. DIACK E7 MM/M Dec. 30, 1952 s. L. DIACK 2,623,522

DISPOSABLE WATER BAG SYRINGE Filed Feb. 14, 1948 3 Sheets-Sheet 3 iMM M' Patented Dec. 30, 1952 UNITED STATES PATENT OFFICE 2 Claims.

This invention relates to a novel and improved construction for a water bag syringe.

Conventional syringe devices are ordinarily made of relatively expensive durable material which is adapted for repeated use. When used in a clinic or hospital, the complete device must be sterilized after each use, entailing a considerable amount of expense and handling of the devices and requiring a large supply of syringes to be kept on hand in order to have a sufficient number ready for use at any time. For individual personal use in the home it is also customary to use a similar, re-usable type of device which, even if not sterilized, must be washed, dried and stored after each use, occasioning inconvenience in the home and still greater inconvenience while traveling.

Objects of the present invention are to provide a syringe of very inexpensive construction and one which is readily disposable so that it may be used once and then discarded to obviate the problems attending the re-use of such devices. Other objects are to provide a novel type of syringe device which may be made at low cost from paper or other inexpensive sheet material; to provide a syringe device made from a single blank of material which is rolled, folded and sealed in a novel manner; and to provide a complete syringe device including a water bag, connecting tube and nozzle made entirely from paper or other sheet or film material. Other objects reside in the novel form of the blank from which the device is made, the provision of a bag which may be carried in an inverted position without a stopper, the manner in which the seams are formed, the manner in which the nozzle is formed, and in the method of forming the device from a blank of material.

The present device comprises a water bag, connecting tube and nozzle which may be of unitary construction formed from a single piece or blank of fiat material. Different kinds of waterproof flexible sheet material may be used for the blank :as will occur to persons skilled in the art, one such material which is particularly suitable for making an inexpensive and easily disposable syringe being a waterproof paper parchment. Also various sealing means may be used to unite the joints in the paper, such as a waterproof glue, a plastic heat sealing coating, or the blank itself may be cut from a material which may be heat sealed by applying heat to the surfaces to be united. The blank is first cut to a pattern to form the bag, connecting tube and nozzle, and if the blank itself is not formed from a heat sealing material it is coated with the waterproof sealing material, as will presently be explained in detail. The blank may be merely coated on its surface with heat sealing, waterproof material in the form ofa film, or it may be thoroughly impregnated therewith, and in either case the material may be applied only in certain areas, or throughout. The nozzle is formed by rolling up a sufficient length of a portion of the paper blank to form a stiff tube having the desired nozzle length and diameter. After the nozzle has been rolled to form a stiff tube, the rest of the blank forming the water bag and connecting tube is folded over and the edges sealed together to form a liquid container. As a final .step the nozzle is preferably dipped in a synthetic resin compound or the like to form a smooth, hard surface thereon. In the completed device a fold or bending line in the paper extends from the upper end of the water bag along one side thereof and toward the nozzle so that the water bag will collapse to-a flat condition for folding into a compact package.

Still further objects and advantages will be apparent as the description proceeds with reference to certain preferred embodiments of the invention illustrated in the accompanying drawings, but it is to be understood that the drawings are for the purpose of illustrating the invention and not for the purpose of limiting the invention, as the same is to be limited only by the terms of the appended claims. 1

In the drawings:

Figure 1 is a plan view of one form of blank from which the syringe may be made;

Figure 2 is a side elevation view of a completed syringe made from the blank shown in Figure 1; t

Figure 3 is a fragmentary elevation view showing the first step in forming the device from the blank shown in Figure -1;

Figure 4 is a sectional view taken on 44of Figure 3; 1

Figure 5 is a sectional view taken on the line 55 of Figure 3;

Figure 6 is a fragmentary view showing a second step in the manufacture of the device;

Figure 7 is a sectional view taken on the line 5-1 of Figure 6; I t

Figure 8 is a sectionalview taken on the line 88 of Figurefi;

Figure 9 is a fragmentary side elevation view of the partially completed device shown in Figure 6 after a further operation has been performed;

Figure 10 is an enlarged fragmentary side elethe line tioned edges I I and I2;

vation view showing the final sealing operation;

Figure 11 is a front view of the completed device shown in Figure Figure 12 is a sectional view taken on the line l2l2 of Figure 11;

Figure 13 is a sectional view taken on the line 13-43 of Figure 11;

Figure 14 is a sectional view taken on the line ld-ld of Figure 2;

Figure 15 is a plan view of the completed device shown in Figure 2;

Figure 16 is an elevation View of a modified form of syringe;

Figure 17 is a cross sectional view taken on the line l7ll of Figure 16;

Figure 18 is a cross sectional View taken on the line l8--i8 of Figure 16; U p

Figure 19 is a fragmentary view of the paper blank used to form the syringe shown in Figure 16;

Figure 29 5 anew .sh wi sth a a ls. nd tube portion of the syringe of Figure 16' in a partially completedstatm Fi is fe eai n: a i ir sm'eld longitudinalse onal viewor the nozzle tip; and

aisur 'z i a ne s i wiugt iesvrinse ofilli ure 16 in inverted'positionforfilling and carryi i f n wiai e r wi Fisu lg i on f of an i o Wh ..h6 Complete syringe maybe forrn 'Ifhe numeral it designates the upper portionpt the blank which is de t form i iwashes this. sad being of substantial width; and hgying a plain edge l and an adhesive edge l 2 It the blank is'cut from a sealing m t ria ailsdhs veicqsi n i n n arri and n suq t se heshad n o the drawing to indicate adhesive is to be understood w designate me e y i, ames of the la v are usedto forrn t he necessary seals. The socalled plain edge H would then, of course'have the same potentialadhesive properties as the socalled adhesive edge [2. In any cas e,the c-onventional showing of adhesive is adapted primarily to designate the location'of'the seams rather than the'type of seal or limits of the adhesive material. A n Y To makea tapered bottom' on the water bag the upper portion 10 alsohas anjncl-ined plain edge I3 and-an inclined adhesive edge Id. these two edges convergingtowardsa relatively long narrow portion IEdesignedtO fOrin the connecting tube between the water bag and the nozzle. The portion l5 has a plain edge it and adhesive edge H, which 'ed'gesarei parallel with each other and also with thepreviously men- 7 I The portion I 5 may also be tapered if desired. The lower end of the portion I5 is connectedwith an adhesiveportion' [8 extending laterallyto a "considerable distance and terminating in an 'uncoated. as Is. At the juncture of the pprtions Sand 18 in the illustrated embodiment the edge ifi is-exte nded into the portion 18 in the form-ofvertical slit or cut 20, and a "short horizontal cut 21 shade at right angles to the cut ZOto'foriria sduare corner therebetween. The numerals wand 2i may be considered to be applied to a lower corner of 'the'p'ortion I5'which is thereby out free from. the portion l8. It Will be observed to Figure 1 that the portion [8 does not examt atjright angles to the vertical edgeslli aindgl], but is cut, preferably at an 'oblidue angle 'as'shown, to make a tapered nozzle tip when'rolled.

The nozzle is formed by starting to roll the lateral end portion It on a small cylindrical mandrel with the remainder of the adhesive portion 18 rolling up to a thickness of several layers as shown in Figures 3 and 5. The thickness or" the material is, of course, exaggerated in the sectional views to show more clearly the forzn of construction. It a fairly good grade of parchment paper is used, the wall thickness shown in Figure 5 would actually be considerably thinner in relation to the inside diameter of the nozzle, although these proportions are not material and the invention may be practiced with either thici; or thin paper, or other sheet or film material. The edge formed on the portion Ed by the cut 2? is designated by the numeral 283a in Figures 3 and 4 and the edge at right angles thereto formed by the cut 25 is designated by the numeral 25a.

Then, instead of rolling up the edge is, which would cause the corner 23, 25 to fit into the corner Eda, Zia, the edge ii is rolled around to overlie the corner Zea, Zia and unite with the edge E6; 2d as shown in Figures 6 and 7 to form an outstandingflange having a width'e ual to the width of the indicated adhesive on the edge ll. When the edges is and i? are thu. brought together, the edge 13 is also folded over even with the edge It and theedge ii is over even with the edge i2. When the edges ii, I3 and l 6 are all united with-the respective edges ills and H, the portions 59 and 55 form water bag and tube as shown in Figures 2, l4 and 15. The side walls are shown in somewhat fiat tened' condition as they may be left for packing and shipment, but it is obvious that when the Water bag and tube portions are filled with l the sides will round out under the liquid p to provide the necessary capacity.

Figure 9 shows a side view of the nozzle portion shown in Figure 6 but with a small adhesive 25 on the outside of the edge It at the end The flange formed by the edges l l and 29 is th 1 bent over and flattened against the nozzle tu on the vertical and diagonal fold lines 26 and F shown in Figures 10 and 11, in which position it is held by the adhesive areas at H and The line 28 designates the upper edge of the adhesive area 25 which becomes a horizontal crease line or transition point between the lower end of the flange 17,20 which is flattened against the nozzle and the upper part of thi flange which is left outstanding. The flattened portion or" flange isshown in Figure 13, and theoutstanding portion of the flange is shown in Figure '2. The sectionshown in Figure 12 is taken in the transition between the line 23 and the plane of the section in Figure '7. These three sections show the device as it appears when completed, while the sectional View in Figure 8 illustrates an uncomet d s e l If the edges it and ii are united by a lap joint instead of a flange joint, the transition between the nozzle-portion l8 and the tube portion is greatly simplified, but then the transition between the tube portion H5 and the water por tion id is more difficult to mal e leak-tight. farious other lapping and sealing arrangements may be devised to make the necessary joints and transitions as will occur topersons skilled in the art in the light of the present disclosure. Another form of construction isshown in a second embodiment to be described presently. Stiil other lapping and sealing arrangements to accomplish the same purpose which fall within the scope of the appended claims are to be included in the invention as equivalent modifications and variations thereof.

The mandrel upon which the nozzle portion is rolled may be used to provide a rigid backing for the application of heat and pressure, when necessary, for thermosetting or thermoplastic sealing materials. The flange joints in the tube and water bag portions may, of course, be pressed against a flat surface. After the various joints have been completed and the mandrel removed from the nozzle, the nozzle is dipped in a synthetic resin or other compound to form a smooth, hard, coating 29 thereon, covering the stepped edges of the spiral rolling of the paper,

If desired, the rolled nozzle I8 may be omitted and a conventional nozzle attached to the tube portion |5 in the usual manner to still obtain the principal advantages of the invention through the use of an inexpensive, readily disposable bag and connecting tube. Conventional nozzles so employed may be disposed of with the bag, or sterilized and re-used on new bags.

Figures 16 to 22 illustrate a syringe 33' embodying the general principles of the invention in a modified form of construction. In this embodiment a single blank 3| of the general shape shown in part in Figure 19 is rolled and folded to form a nozzle 32, tube 33 and water bag 34. The opposite edges of the blank are folded over and united to form the water bag 34 of any desired shape, the sealed joint along the edges of the blank terminating at the point 35 to leave a filler opening 36 at a height which will provide the desired fluid capacity for the water bag. Above the filler opening 36 the edges of the blank are united in a vertical joint 31 and a top horizontal joint 38 to form an upper bag portion 39, which joints are extended in the upper corner of the bag to include an area around an eyelet 43 for supporting the bag and its contents. If relatively thin material is used for the blank, suitable reinforcement may be provided around the eyelet to support the necessary weight of Water without tearing the material.

The syringe shown in Figure 16 is filled by inverting it and pouring in water through the filler opening 36 substantially to fill the upper part 33 of the bag as shown in Figure 22. The extended seal around the eyelet 40 prevents leakage at this point while the bag is inverted. The blank is preferably proportioned so that the upper portion 39 will hold the same amount of water as the water bag portion 34 and tube 33, whereby, when the bag is inverted, it may be safely filled up almost to the filler opening 33 as shown in Figure 22. This form of construction makes it easy to carry a number of filled syringes without loss of their contents by merely grasping the tubes 33 of all the syringes together in one hand. In this position the syringes may be subjected to considerable jostling without loss of water through the filler openings. When the syringe is to be used, it is merely tipped or rotated in a counterclockwise direction from the position shown in Figure 22 to cause the water in the part 39 to run down into the tube 33 and fill the water bag portion 34 to the approximate level shown in Figure 16, whereupon it may be hung by the eyelet 40 upon a hook provided for the purpose.

To form the syringe from the blank 3|, shown in Figure 19, the laterally extending portion 4| is first rolled on a mandrel of the proper size to form the nozzle 32. The lower edge 42 of this portion of the blank is slightly curved, as shown,

to form a rounded end 42a on the nozzle tip, and the horizontal length of the portion 4| of the blank is sufficient to provide the desired wall thickness in the nozzle, the size of the water passage through the nozzle, of course, being determined by the size of the mandrel upon which the portion 4| is rolled.

The insertable nozzle portion of the blank 4| terminates at a vertical edge 44 to leave a long, offset, horizontal edge 45 extending from the nozzle portion 4| to the tube forming portion 46 of the blank. The portion of the blank having the horizontal lower edge 45 forms a shank on the nozzle and is designated by the numeral 41. The vertical edge 44 is preferably about two inches long and its purpose is to offset the edge 45 to form a perpendicular shoulder 45a on the nozzle, as shown in Figure 20, to serve as a guard to limit the depth of insertion of the nozzle into the patient. The horizontal portion 41 of the blank is extended to suflicient length to build up the desired shoulder height at 45a, depending on the thickness of the material of the blank. The numeral 50 designates a seal area which may have an adhesive coating extending along the edges of the portions 4|, 41 and 45 in the manner shown to hold the material tightly rolled in the nozzle portion of the syringe and to form the necessary marginal joint in the tube and bag portions. It will be apparent that by rolling the portion 4| rather tightly on a mandrel and securing the successive layers together at least in the designated seal area, a sufllciently stiff and serviceable nozzle 32 may be formed. The additional material in the portion 41 of the blank used to form the shoulder 45a makes a still larger and stifier base or shank portion 5| on the nozzle where it joins with the tube 33.

The nozzle 32 may be dipped in a suitable coating composition 52 to provide a smooth surface thereon, especially over the curved end 42a where the edge 42 of the paper forms a series of squarecorner steps in its successive layers. The coating material 52 is preferably applied to a sumcient thickness to fill in the stepped corners and provide a smooth, rounded contour on the end 42a, as shown in the magnified cross sectional view in Figure 21.

It will be apparent that after the nozzle 32 has been formed and the last part of the horizontal portion 41 is being rolled to. complete the nozzle shank 5|, the lower end of the tube 33 will be formed concurrently from the blank portion 46. Thus, when the rolling of the shank portion 5| is completed, the seal area 50 on the inside surface of the outer edge of the blank portion 46 will roll over on top of the outer surface at the edge 55 to form a simple lap joint to establish an integral water-tight connection between the lower end of the tube 33 and the nozzle shank 5|. A lap joint, however, is an unsatisfactory form of joint to follow the reverse curves in the bag portion 34, because the material of the blank cannot readily be folded on a curve. Whereas the lap joint is formed on the shank 5| on a cylindrical surface without any folding of the paper, it is preferred to form the other sealed joints on a flat supporting surface with one side of the blank folded over to lie flat on the other side in the manner described in connection with Figures 1 and 2, making it desirable to change to a difierent type of joint above the nozzle.

The type of joint employed along the straight edges 31 and 38, and also along the reversely curved edge 56, is, therefore, designated as a flap of flahgejoint as shown in Figure 17, to distinguish mm the lap joint in the tube '33 near the nozzle, as shown in Figure 18. The term flange joint is employed to describe the form of joint shown in "Figure 17 because when the sides of the bag are filled out with liquid the edge portions of the two sides of the blank extend in the same direction and are disposed to stand out like a'fiange in substantially perpendicular relation to the'adjacent surface of the container, while in a lap joint, as shown in Figure 18, the opposite edge portions of the blank are oppositely directed and lie in the contour of the container wall when viewed in cross section. It is a parent that the lap joint shown in Figure 18 is most suitable on a cylindrical shape, and that the flange joint shown in Figure 17 is most 'suit able to follow a curved edge where the bag is to be pressedflat.

Thus, in the sealing operation there must be some kind of a transition between the lap joint on the cylindrical surface of the nozzle shank at the lower end of the tube 33 and the flange joint in the upper part of this tube and along the curved edge 56. If the sealing operation requires a continuous solid backing for pressing the parts together to form the joints, the mandrel on which the nozzle portion is rolled may have an upper end extending from the shank portion 51 gradually flattened in a wedge shape to effect the transition from a, cylindrical surface to a flat surface, but the invention is not limited to the use of any particular form of mandrel for this purpose.

Figure shows one form of transition from the lap joint on the nozzle shank 5! to the flange joint on the upper part of the tube When the nozzle shank ha been rolled to the point shown in Figure 20, the under edge 55 of the portion of the blank is folded over and a diagonal crease 56 is formed, beginning at a point 51 some distance from the nozzle and extending down to a point near the shank 5i where the tube 33, of course, cannot be pressed flat but must begin to assume an oval shape in cross section which gradually thickens to a circular shape at the shank. If a flattened mandrel is used, the crease 56 would disappear at the upper end of the mandrel. Thus, when the top edge 58 is rolled upon the shank 5|, it forms a lap joint on the shank 5| and also on the lower end of the tube 33 in those portions having oval cross sections. However, where the tube 33 is pressed fiat, the seal area on the inside surface adjacent the edge 58 will attach itself both to the outer surface 59, which is folded over by the crease 56, and to a portion 68 of the inside surface which is exposed beyond the edge 55. The width of the seal area on the outer surface will thereby gradually diminish and become zero at the point 51, while the width of the seal area on the inside surface will gradually increase up to the point 51, whereby the seal area 51'! will be caused to unite with both surfaces 59 and G9 in the transition. Between the point 51 and the upper end ofthe seal at 35 a simple flange joint will be formed as shown in Figure 1'7. In this way the tube 33 may have a gradual taper, but it preferably will not enlarge appreciably between the nozzle and the point 5?. Above the point 51 the curve 56 may be out to any shape desired for convenience in handling the necessary quantity of water.

While the seal area 50 is shown on the drawing as an adhesive coating, the shading is employed primarily merely to show the location of the sealed joints and not to constitute a limitation to aspecific type of seal. When a paper or other material not possessing inherent selfsea1ing properties is used for the blank, a waterproof adhesive, preferably of the heat sealing type, may be applied to the area 50 along edges of the blank as shown, but when the blank is out from a material which may be heat sealed without the addition of any adhesive coating the shaded area 56 merely designates the location of the joints thus formed. Suitable heat sealing materials and the methods of forming heat sealed joints therewith are well known in the art.

It is also possible to use ordinary inexpensive, low strength, water absorbent paper by coating the paper over its entire area with a thin, tough film of suitable waterproof heat sealing material. Ihe paper may then merely form a backing for the film, which in itself provides the necessary wet strength and heat scaling properties. The joints are formed by applying heat to the approximate area designated while the edges or parts are held in contact with each other. If heat is applied to the whole nozzle the plastic material of the film will flow into and impregnate the paper in the nozzle, making a very hard and serviceable nozzle. Also, the plastic film may he applied to the paper to thoroughly impregnate it in the first place, before the blanks are cut or folded, to make a relatively weak and inexpensive paper suitable for the purpose.

The embodiment shown in Figure 16 may also be made without including the nozzle as an integral part of the original blank, without sacrificing the major advantages of the invention. In such case a conventional nozzle may be attached to the lower end of the tube 33, thereby obviating the transition to a lap joint.

Regardless of the type of nozzle used, the arm bodiment of Figure 16 provides a disposable syringe bag which is inexpensive to manufacture and which may be compactly folded in a flat package. The upper portion 39 of the bag provides a convenient measuring and carrying container for the water before the bag is turned upright for use. A number of the filled bags may easily be carried by their tubes 33 without spilling the contents and Without requiring stoppers in the filler openings or pinching devices on the nozzle tubes. After use, the whole device may be disposed of, thereby relieving hospital and clinic facilities of a considerable amount of washing and sterilizing.

Having now described my invention and in what manner the same may be used, what I claim as new and desire to protect by Letters Patent is:

1. A Water bag syringe comprising a sheet of flexible material folded on its longitudinal center line and sealed at its overlapped edges to form an integral water bag and connecting tube, and having a tubular nozzle formed on the end of said connecting tube by a rolled portion of said sheet.

2. A water bag syringe comprising a piece of material precut to a shape corresponding with the contour of the finished syringe, and folded and sealed to form a water bag and connecting tube, a nozzle on said connecting tube formed from a strip of the same piece of material extending laterally from the portion thereof from which the connecting tube is formed, the outer edge ofsaid nozzle forming strip being cut at an angle to the connecting tube portion of slightly greater than degrees, so that when said strip is rolled to form the nozzle, the outer edge is wound in a spiral to form a tapered tip for said nozzle; and a coating on said tip to form a smooth Number contour over said spirally wound edges. 1,854,091 SAMUEL L. DIACK. 1,865,555 2,099,412 REFERENCES CITED 5 2,213,057 The following references are of record in the 2,328,569 file of this patent: 2,429,123

UNITED STATES PATENTS Number Name Date 10 Number 1,603,001 Carter Oct. 12, 1926 1,929 1,676,102 Lynam July 3, 1928 385,921

Name Date Young Apr. 12, 1932 Brown July 5, 1932 Seidler Nov. 16, 1937 Sponsel Aug. 2'7, 1940 McGaw Sept. "7, 1943 Crowley Oct. 14, 1947 FOREIGN PATENTS Country Date Great Britain Jan. 217, 1896 Great Britain Jan. .5, 1933

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