US 3605740 A
Abstract available in
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Description (OCR text may contain errors)
Sept. 20, 1971 H. PRICE ETAL 3,605,740
INTRAVENOUS INJECTION APPARATUS Filed Aug. 30, 1968 /fl 22 A! f 20 3,1 30
V L 24 /d 75 I /fl A 4 0 Z l V ff 42 V 5 if i m riilz.
INVENTORS Helm/Po P/P/ae' BY 00045; h nu/cxr United States Patent 01 flee 3,605,740 INTRAVENOUS INJECTION APPARATUS Howard Price, Whitestone, N.Y., and Dudley Wallick,
Clifton, N.J., assignors to International Patents & Development Corporation Filed Aug. 30, 1968, Ser. No. 756,521 Int. Cl. A61m /00; A61j N00 US. Cl. 128214 9 Claims ABSTRACT OF THE DISCLOSURE BACKGROUND OF THE INVENTION Heretofore, intravenous injection has been accomplished by elevating the bottle containing the fluid to be injected, so that the fluid may flow from the bottle under the action of gravity. Furthermore, the flow rate from the bottle had not been reliably controllable, and complete assurance could not be had that air would not remain within the passages of the apparatus through which the intravenous fluid would flow on its way to the hypodermic needle. Accordingly, it is the object of the present invention to provide an intravenous injection arrangement in which the liquid or fluid to be injected is maintained within a bottle under pressure, so that the bottle may be held in any position and at any level without regard to gravity. It is also an object of the present invention to provide a simplified valve arrangement which controls the flow rate of the fluid from the bottle. At the same time, it is the object of the present invention that the apparatus which attaches to the bottle be designed to assure that no air may be introduced into the fluid being injected.
SUMMARY OF THE INVENTION An intravenous injection arrangement or apparatus in which the fluid to be injected is contained under pressure within a bottle. The seal of the bottle is pierced through a needle valve which also controls the flow rate of fluid from the bottle. Fluid flows from the bottle to the hypodermic needle, by way of an evacuated chamber communicating with the needle valve. The chamber is evacuated through the operation of a plunger within a tightly-fitting cylindrical chamber. The evacuation of the air within the chamber is performed in a manner which assures that no air becomes introduced in the fluid from the bottle on its way to the hypodermic needle. The needle valve cooperates with the evacuated chamber to assure an air-free controlled flow rate of fluid into the hypodermic needle. The fluid within the bottle is maintained under pressure through a disc and spring combination, which allows the bottle to be held in any desired or arbitrary position during the injection operation.
Various specific purposes, features and advantages will clearly appear from the detailed description given below taken in connection with the accompanying drawing which forms part of this specification and illustrates merely by way of example a certain embodiment of the apparatus according to the invention.
3,605,740 Patented Sept. 20, 1971 BRIEF DESCRIPTION OF THE .DRAWING In the following description and in the claims, parts will be identified by specific names for convenience, but such names are intended to be as generic in their application to similar parts as the art will permit. Like reference characters denote like parts in the several figures of the drawing, in which FIG. 1 is a sectional front view of the intravenous injection arrangement, and shows the assembly of the bottle, valve, and injection needle in accordance with the present invention;
FIG. 2 is a partial sectional view of the valve shown in FIG. 1;
FIG. 3 is a partial sectional view of the evacuating plunger shown in FIG. 1, and shows the valve construction within the plunger head;
FIG. 4 is a sectional view through the axis of the fluid containing bottle shown in FIG. 1;
FIG. 5 is a sectional top view of the fluid containing bottle of FIG. 4 in combination with a member for securing the bottle in place.
DESCRIPTION OF THE PREFERRED EMBODIMENT 'Referring to the drawing, a bottle 10 containing the fluid 12 to be injected intravenously is made of plastics or similar disposable material. The bottle 10 made of plastics or any other suitable material is provided with a neck 14 having, at its end, a thread 16. When the bottle 10 with the fluid 12 is being stored, the bottle is sealed at the end of its neck through a seal or plug 18. The fluid 12 within the bottle 10 is maintained under pressure which tends to force the fluid out of the bottle.
When the fluid 12 is to be injected intravenously, the bottle 10 is threadably inserted into a housing 20 of an injection apparatus 22. The housing 20 which may be made of plastics or any other suitable material contains, at one end, an opening 24 which is internally threaded to receive and accommodate the thread 16 of the bottle 10. At the other end of the housing 20, is a second opening 26 which also has an internal thread for receiving a needle valve 28. The latter possesses a threaded portion 30 which is inserted into the threaded opening 26. The knob 32 may be of circular cross section and knurled on its cylindrical exterior surface to facilitate manual gripping of the knob and turning of the needle valve.
The needle valve 28 has a smooth cylindrical portion 34 adjoining the threaded portion 30. The smooth cylindrical portion 34 terminates in a conical-shaped portion 36 which serves as the needle of the valve. The conical shaped portion 36 or needle end of the valve, is used to pierce the seal 18 of the bottle 10 and to regulate the flow of fluid from the bottle.
Thus, the bottle 10 may first be threaded, at its neck, into the housing 20 without piercing the seal 18. When the neck 14 is within the housing by being Within the opening 24 to the fullest extent, the knob 32 may be turned to bring the apex or piercing point of the portion 36 into contact with the seal 18. Through further turning of the knob 32 the conical-shaped portion 36 proceeds to pierce the seal and enter the interior of the bottle 10. The contents 12 or interior of the bottle 10 remain sealed even though the conical-shaped portion 36 has pierced the seal 18, since the cross section of the conical portion 36 fills the pierced opening within the seal 18. Accordingly, the interior or contents 12 of the bottle 10* remains sealed as. long as the knob 32 is turned in one direction, corresponding to the piercing of the seal 18. The contents or fluid 12 can flow out of the bottle only after the knob 32 is turned in the opposite direction which retracts the conical section 36 and moves the latter away from the pierced opening.
In another procedure for piercing the seal 18, the knob 32 has been turned to its desired final position, before threading the neck 14 into the opening 24 of the housing 20. In this procedure, therefore, the conical section 36 projects into the threaded opening 24 before the bottle 10 is attached to the housing 20. When the neck 14 of the bottle 10 is then threaded into the opening 24, the needle end or cone-shaped portion 36 progressively pierces the seal 18 as the bottle 10 is turned and threaded into the opening 24. When the neck 14 has been inserted into the opening 24, to its fullest extent permitted by the length of opening 24, the sealed portion 18 of the bottle 10 will have a pierced opening of the desired diameter. The housing 20 is shaped internally to accommodate the smooth section 34 and the conical-shaped portion 36. In the position shown in FIG. 1, the needle valve 28 has been. turned through the knob 32 to its end position in which the conical-shaped portion 36 projects by the maximum amount into the neck of the bottle 10. The interior Walls of the housing 20 in contact with the conical-shaped portion 36 when the latter is in this end position, serves as a stop or signal to the user of the apparatus that the knob 32 has been turned to its limiting or end position.
A transparent tube 38 made of, for example, plastics is secured to the housing 20. The interior 40 of the tube 38 communicates with the passage within the interior of the housing 20 in which the portion 34 of the needle valve resides. A plunger 42 is fitted into the interior of the tube 38 so that it may slide longitudinally along the axis of the tube. To facilitate such sliding action of the plunger 42, the interior walls of the tube 38 have a smooth finish. A plunger rod 44 is attached to the plunger 42- and projects out of the tube 38 through an opening 48 at the end of the tube. This end of the tube containing the opening 48 is capped so that the opening 48 will guide the movement of the plunger rod 44 as the latter moves longitudinally along the axis of the tube. A plunger-pulling ring or handle 46 is attached to the end of the plunger rod 44. This ring or handle 46 permits the operator to move the plunger readily within the interior of the tube 38. The element or handle 46 may be ring shaped so that it may be readily gripped between two fingers for pulling at the plunger rod 44.
As shown in FIG. 2, the surface of the plunger 42 facing the cylindrical portion 34 of the needle valve, is shaped so as to sealingly contact the portion 34 when the plunger is at its extreme position in which it bears against the portion 34. Accordingly, this contact surface 42a of the plunger 42 is cylindrically shaped to mate with the surface of the cylindrical portion 34.
The capped end of the tube 38 which contains the opening 48, has, furthermore, an opening 50. The latter communicates with the interior 54 of an elbow 52 attached to the tube 38. The elbow 52 is secured at its terminating end, to a flexible tube coupling 56 to which is attached a flexible tube 58. At the other end of the flexible tube 58, is a retaining member 60 which retains or holds a hypodermis needle 62. The elements 38, 52, '56, 58, 60 and 62 are all secured to each other so that their internal passages communicate with each other, but are sealed against the exterior environment.
The plunger 42 includes an opening 64 extending through the plunger so that the axis of the opening 64 is parallel to the plunger rod 44. The opening 64 cooperates with a ball 66 to provide a check valve within the plunger 42. A plug 68 is pressed into one end of the opening 64 so as to retain the ball 64 therein. The opening 64 is V-shaped by which the ball '66 is prevented from leaving the opening 64 at the other end, opposite to that at which the plug 68 is located. The plug 68 includes a passage 70 in communication with the V-shaped opening 64.
To maintain the fluid 12 within the bottle 10 under pressure, a spring-loaded disc member 72 is provided within the bottle as shown in FIG. 4. A spring 74 seated, at one end, on a pad 78 at the bottom of the bottle, maintains a force against the disc member 72 tending to move the latter toward the neck or opening of the bottle. The fluid 12 within the bottle is confined to the portion of the bottle interior, bordered by the disc 72 and the upper end of the bottle containing the neck. To prevent fluid from seeping into the portion of the bottle housing the spring 74, an O ring 76 is provided. To assemble the disc 72 and spring 74 within the bottle 10, the bottom 10a of the bottle may be designed in the form of a separate circular disc which may be sealed to the bottle walls after the disc and spring have been introduced into the interior of the bottle. Thus, if the material used for the bottle is plastics, the bottle 10a may be simply heat sealed to the bottle walls, in the conventional manner and with conventional apparatus used for joining plastic material through the application of heat. The pad 78 may be integrally constructed with the bottom 10a.
When fluid is introduced into the bottle 10, it is introduced under pressure which forces the disc 72 towards the bottom end of the bottle 10. As a result, the fluid 12 will be maintained under pressure within the bottle after the opening of the bottle through its neck, has been sealed. The bottle 10 may be provided with a bottle attachment device 80 shown in FIG. 5. This attachment may be curved or shaped to conform to the arm of the patient for the purpose of holding the bottle in place While the intravenous injection is taking place. The attachment 80 may be provided with a pressure-sensitive adhesive 82 for securing the attachment 80 and hence the bottle 10 to the body of the patient. Thus, the pressure-sensitive adhesive 82 may be coated on the surface of the attachment 80 so as to readily adhere to the skin of the arm, for example, of the patient and thereby maintain the bottle 10 in a desired position.
In operation, the sealed bottle 10 is threadably inserted into the housing 20 so that the threaded portion 16 is properly seated within the opening 24. During this interval the plunger 42 and the needle valve 28 are in their end positions as shown in FIG. 1. During the operation in which the bottle 10 is threaded into the opening 24, the seal 18 is pierced by the cone-shaped portion 36 of the needle valve. The plunger ring 46 is then gripped and pulled so that the plunger 42 is moved to the opposite end of the tube 38. During this operation of moving the plunger 42, the air within the chamber 40 is forced out through the opening 50' and 54, and through the flexible tube 58 as well as the hypodermic needle 62. When the plunger 42 is thus moved, the ball 66 within the opening 64 of the check valve, is seated against the V-shaped walls of the opening 64 and prevents the air from passing into the chamber 40 after the plunger 42 has been moved to the capped end of the tube 38. As a result, the interior of the chamber 40 is evacuated when the plunger ring 46 has been pulled outward. The needle valve knob 32 is then turned so as to retract, from the pierced opening in the seal 18, the cone shaped portion 36. This leaves an annular opening between the seal 18 and the exterior surface of the portion 36, through which the pressurized fluid 12 may pass into the chamber 40. After a sufficient amount of the fluid 12 has been transferred into the chamber 40, sufficient pressure is available to force the ball 66 toward the plug 68. The fluid within the chamber 40, can, thereupon, flow through the opening 64 and the duct or passage 70. Since the latter passage is aligned with the opening 50 and 54, fluid may flow freely through the flexible tube and hence, the hypodermic needle from within the chamber 40. After a suflicient amount of such fluid has appeared at the end of the hypodermic needle 62, assurance can be had that all of the air within the apparatus has been removed, and only fluid will be injected intravenously.
The fluid flow may be regulated through adjustment of the needle valve by turning knob 32 and, hence, increasing or decreasing the size of the annular opening between the seal 18 and the cone shaped portion 36 of the valve. At the same time, the amount of fluid within the chamber 40 may be readily observed through the provision that the chamber or tube 38 is made of transparent plastic material. Along the length of the tube 38 markings may be provided which indicate the amount of fluid observed within the chamber. Thus, the length of the tube may contain markings expressed in cubic centimeters to indicate to the operator the volume of fluid within the chamber 40.
While the invention has been described and illustrated with respect to certain preferred example which gives satisfactory results, it will be understood by those skilled in the art after understanding the principle of the invention, that changes and modifications may be made Without departing from the spirit and scope of the invention and it is intended, therefore, in the appended claims to cover all such changes and modifications.
What is claimed is:
1. An intravenous injection arrangement comprising, in combination, fluid containing means for containing the fluid to be injected intravenously under pressure; valve means for opening said fluid containing means and communicating with said fluid containing means for regulating the flow of fluid from said containing means; injection needle means communictaing with said valve means for injecting intravenously said fluid within said fluid containing means, the flow rate of said injected fluid being regulated by said valve means; and actuating means connected to said valve means in the flow path from said container means to said needle means for initiating the flow of fluid from said containing means to said injection needle means through said valve means, said actuating means comprising: a tubular housing secured to said valve means and communicating with said flow path through said valve means; and plunger means movable within said tubular means and evacuating the air within said tubular means when said plunger means is moved from one end of said tubular means to the other end thereof, the evacuation of said air from said tubular means permitting fluid flow from said container means and through said valve means.
2. The intravenous injection arrangement as defined in claim 1 wherein said valve means is a needle valve having a needle-shaped member for piercing said fluid containing means, said fluid flowing from said containing means into said valve means after piercing by said needle-shaped member.
3. The intravenous injection arrangement as defined in claim 1 including threaded means in said valve means for threadably receiving said fluid containing means.
4. The intravenous injection arrangement as defined in claim 3 wherein said valve means comprises a housing member threadably supporting said fluid containing means; a needle-shaped adjustable member adjustable within said housing for piercing said fluid containing means and controlling the flow rate from said containing means; and supporting means for supporting said actuating means.
5. The intravenous injection arrangement as defined in claim 1 wherein said fluid containing means comprises a disposable bottle threaded at its neck for threadably joining to said valve means; a movable plate member within said bottle and confining said fluid between said plate member and the neck of said bottle; and spring means mounted between said plate member and bottom of said bottle for maintaining pressure against said plate member and thereby maintaining said fluid under pressure within said bottle.
"6. The intravenous injection arrangement as defined in claim 5 including bottle supporting means attachable to the patient into whom said fluid is to be injected intravenously, said bottle supporting means being secured to said bottle.
7. The intravenous injection arrangement as defined in claim 1 wherein said tubular housing is of transparent material containing markings along said tubular housing for indicating the fluid volume within said tubular housmg.
8. The intravenous injection arrangement as defined in claim 1 including flexible tubing means connected between said actuating means and said needle means for permitting flexible movement of said needle means in relation to said actuating means and said valve means.
9. An intravenous injection arrangement comprising, in combination, fluid containing means for containing the fluid to be injected intravenously under pressure; valve means communicating with said fluid containing means for regulating the flow of fluid from said containing means; injection needle means communicating with said valve means for injecting intravenously said fluid within said fluid containing means; actuating means connected to said valve means for initiating the flow of fluid from said containing means to said injection needle means through said valve means, said valve means controlling the rate of flow of fluid to said injection needle means, said actuating means comprising: a tubular housing secured to said valve means and communicating with the flow path through said valve means; and plunger means movable within said tubular means and evacuating the air within said tubular means when said plunger means is moved from one end of said tubular means to the other end thereof, the evacuation of said air from said tubular means forcing fluid flow from said containing means and through said valve means, said plunger means comprising: a plunger head movable along the interior wall of said tubular housing; and check valve means in said plunger head for permitting air flow through said plunger head when moving in one direction within said tubular housing and preventing air flow through said plunger head when moving in the opposite direction.
References Cited UNITED STATES PATENTS 1,930,929 10/1933 Eisenberg 128-218 2,971,509 2/1961 Cohen 128-216 3,055,362 9/1962 Uytenbogaart 128218 3,469,578 9/1969 Bierman 128-214 WARNER H. CAMP, Primary Examiner U.S. Cl. X.R. 128272