US2345070A - Vaccine injector - Google Patents

Description

March 28, 1944.

VACCINE INJECTOR E. PowELL `2,345,070

Filed Nov. 5, 1942 /n Ve'n for* Patented Mar. 28, 1944 UNITED STATES PATENT OFFICE VACCINE INJECTOR Edward Powell, Portland, Oreg. Application November 3, 1942, Serial No. 464,360

(Cl. 12S-215) 9 Claims.

This invention is directed to an improvement in vaccine injectors, designed more particularly for fowl vaccination, but in no particular limited to this use. r

In vaccination treatment, particularly of fowl, it is important that the vaccine be thoroughly protected against contamination before and during use, and that the definitely predetermined quantity be delivered at each application. Furthermore, it is of material advantage to avoid possible intercommunication of disease from one treated fowl to the next fowl being treated, and such advantage can only be obtained by discarding any element of the applicator that has contacted the fowl-being treated and provide entirely new elements for each successive fowl.

The primary object of the invention, therefore, vlis the provision of an applicator, in which the vaccine carrier is made up substantially in stripform, divided into independent and readily separable points, formed to receive a predetermined quantity of vaccine, each charge point after use being broken off and discarded.

A further object of the invention is the provision of a holderformed to house and protectthe applicator strip, provided with means to receive and protect a quantity of vaccine, and having manually operable means whereby the applicator strip is charged at a particular area with a predetermined quantity of vaccine, and then projected for use, the used point being manually separated from the applicator strip after use to expose a charged fresh point.

The invention is illustrated in the accompanying drawing, in which:

Figure 1 is a sectional view, partly in tion, showing the complete applicator.

Figure 2 is a broken section on line 2-2 of Figure 1.

Figure 3 is a transverse section on line 3-3 of Figure 1.

Figure 4 is a broken perspective view showing the ejector nozzle of the applicator, illustrating a used point broken from the applicator strip and a fresh charged point ready for use.

Figure 5 is a broken perspective view of the applicator strip.

The improved applicator includes a casing I, formed at one end with a vaccine chamber 2, in which vaccine, indicated at 3, may be introduced through any suitable opening-not shown-and completely protected from any exterior contamination. The casing in rear of the chamber 2 is formed at 4 to receive and house a freely-rotatelevaable drum 5 for carrying a desired length of the applicator strip 28, hereinafter referred to.

The casing below the vaccine chamber Vand drum is formed to provide an operating chamber 5, having communication with the drum chamber and extending forward of the casing as a preferablerectangular channel l, opening through the forward end of the casing. A pistol grip 8 depending from the operating chamber provides Ylor convenient handling of the applicator.

Mounted in and substantially tting and frictionally held in the channel 1 is arranged a guide block 30, preferably of flexible material, as rubber. The block 3i) is formed with a longitudinally-ranging guideway 3l, corresponding in size and shape to the similar dimensions of the applicator strip 2B, the guideway 3l being open at its rear end to receive the strip 28 from the drum and open at the front end to permit protection of the strip in use.

The strip 2S is formed as more particularly shown in Figure 5, comprising a section of thin appropriate material, formed at intervals, as by stamping with forwardly-converging depressions 35, meeting in a point in the longitudinal central line of tne strip, and terminatingv short of the side edges of the strip, as indicated at 36. The depressions ae extend through the material and thus provide recesses to receive and temporarily house a charge oi vaccine, and provide feeding means.

The strip is fed, by means to be described, from the drum to and through the guideway 3| of the block itil, and the channels of the strip receive a charge of Vaccine in passing beneath communicating openings 4l and 48 in the bottom of the vaccine chamber 2 and the block 30 respectively.

The feeding means for the strip 28 is mainly arranged in the chamber 6 and includes a trigger 38, pivotally supported at 40 and depending below the chamber 6 for convenient operation by a finger of the hand grasping the grip 8. A pawl 33 is pivotally carried by the upper end of the trigger 38, with one long arm terminating in a point 4l to engage and advance the strip 28, and a short arm 43, connected by a spring 42, connected to a wall of the chamber at 45 and to the end of the short arm 43 of the pawl at 44. The spring maintains sufficient pressure on the strip-engaging end of the pawl to insure feeding cooperation of the strip 28.

In the operation, the point, as shown in Figure 2 at 46, is forced to penetrate the flesh of the fowl. The trigger is then operated, causing the pawl 33 to engage one of the slots 35, forcing the strip out through the block 30, and one of the slots to appear out through the nozzle of the applicator. A quantity of vaccine is thus carried into the wound. After such application, the point 46 is broken off, as shown in Figure 4 at 35. It will be noted that the following slot has not yet appeared and that a liquid seal is being maintained within the block 30. The vaccine enters the slots 35 of the strip 28 through an opening 41 of the frame of the instrument, then through the opening 48 of the block 30, directly into the slots 35 of the strip 38.

It is believed that an instrument with individual points to be used on the fowls will undoubtedly prevent the transfer of disease from fowl to fowl.

The device, while generally useful in its particular field, is more particularly designed for the introduction of a vaccine, bacterin, antitoxin or combination of these and/or other substances into the anin'iai cody or a part thereof to enable partial or complete immunization against diseases or body disorders. Its use in the immunizin'g of turkeys 'and chickens against fowl pox, chickens against laryngotra'cheitis being typical' eka-mples. 'It must be understood here that other diseases show indications of utilizing this -device for'their prevention and control and it is protection for its use with al1 of these types of diseases and disorders on all classes of `animals where sticking, scarifying or harsh brushing is indicated for effectual use of the immunizin'g 'agent that is herein specically requested.

What I claim is:

1.**A vaccine applicator, including a casing having a vaccine reservoir, an applicator' strip, and means for feeding the applicator strip beneath and in communication with such reservoir, said strip comprising separable vaccine receiving penetrating points.

2. A vaccine applicator, including a casing having a vaccine reservoir, an applicator strip, a guide block through which the strip passes, and means for feeding the strip through the applicator, the reservoir and block being formed with communicating openings to deliver the vaccine onto the strip.

3. A construction as dened in claim 2, wherein a drum is mounted in the casing on which the applicator strip is wound for delivery through the guide block.

4. A construction as defined in claim 2, wherein the feeding means includes a pawl to engage the applicator strip and a trigger for operating the pawl.

5. A construction as defined in claim 2, wherein the applicator strip is formed to present channels terminating in a point and stopping short of the edges of the strip.

6. A construction as dened in claim 2, wherein the applicator strip is formed to present channels terminating in a point and stopping short of the edges of the strip, the point of the channels facing forward in the operating direction of the strip.

`7. A construction as dened in claim 2, wherein the applicator 4strip is formed to present `channels terminating in a point and stopping .'short 'of the edges of the strip, the point of the channels facing forward in the operating direction of the strip, and the sections of the strip denned between adjacent channels being manually separa-bie on the strip integral sections at the ends of the channels 'at will to provide new charged points for use.

8. A penetrating element for vaccine applicators, made up in strip form, marked for separation into individual vaccine applicators, the -respective points provided by such separating indications permit separate use of a completely new point at each application. Y

9. A penetrating element for vaccine applicators, made up in strip form, marked for separation into individual vaccine applicators, the respective points provided by such separating indications permit separate use vof a completely new point at each application, the separation markings on the strip forming vaccine-receiving channels to deliver vaccine with the penetrating action of each point.

EDWARD POWELL.

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