US1093471A - Hypodermic syringe. - Google Patents

Description

n R. S. PORTER.

HYPODBRMIG SYRINGE.

Patented A131114, 1914.

APPLICATION FILED MAB.. 16, 1911. RENBWBD AUG. 22, 1913.

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I-IYPODERMIC SYRINGE.

inseam.

Specification of Letters Patent.

Application led March 16, 1911, Serial No. 614,864. Renewed August 22, 1913.

Patented Apr. 14, 1914.

serial No. 786,183.

To all whom it may concern Be it kno-wn that 1, ROBE S. PORTER, a citizen of the United States, residing Charleston, in the county of Kanawha, State of West Virginia, have invented certain new and useful Improvements in Hypodermic Syringes; and 1 do hereby declare the following to be a. full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to hypodermic syringes and the object in view is the construction of a compact and efficient hypodermic syringe presenting the general appearance of a fountain pen and pro-vided with means for containing various drugs. Another object of the invention is the construction of a hypodermic syringe of this type having a cap divided by partitions to form drug compartments and a suitable closure for the compartments and a cap formed with a plug closed compartment. for holding liquid or powder drugs.

With the above and other objects in view the invention consists in certain construcltions, combinations and arrangements of rying an eXtra drug, and serving as a tea? spoon in which to dissolve tablets. Fig. 5 is a detail sectional view on an enlarged scale more clearly illustrating the construc tion of the closure for the partitioned cap of the syringe. Fig. 6 is a section taken on the line 6 6 of Fig. 5.

Referring to the accompanying drawings illustrating the preferred embodiment of the invention, 5 denotes the syringe or barrel one end of which is formed with an apertured end wall 6 through which the contents of the syringe may be discharged and which is provided with a small threaded tubular extension 7 0n which the hypodermic needle is threaded, said needle being of any iinproved type and formed to allow for the passage of the liquid from the syringe barrel.

A piston 9 reciprocates in the syringe barrel 5 `and normally abuts against the end wall 6 and said piston is secured to a hollow piston rod 10 which projects through a bushing 11 secured to the barrel 5. The outer end of the rod 10` carries a small handle 13 which abuts against the edge 12 of the bushing, and said rod is adapted to hold the needle when not in use.

The piston 9 may be unscrewed from the piston rod (after the barrel is full of medieine) and inserted into the liquid from the opposite end of the barrel7 thus permitting the patient to carry a syringe full of medieine ready for immediate use.

A cap 14 fits on a reduced cone-shaped portion 15 of the barrel 5 and incloses the discharge end of the barrel 5. The cap 14 is provided with an internal cone-shaped partition 17 in which tablets may be dissolved. The cap 14 is formed hollow at the end to hold liquid or powdered drugs and is closed by a tight fitting plug 1S. When the cap 14 is removed from the barrel 5 the inner end thereof may be used as a substitute for dissolving tablets in water.

The outer end of the barrel 5 is engaged by a cap 19 which is formed with an end wall 2() located inwardly of the inner terminal of the body portion of said cap, and which end wall abuts against the handle 13 of the piston rod 10, while the terminal of the body portion of the cap lits over the outer end of the barrel 5. The cap 19 is made hollow and divided by one or more partitions made of cork and inserted into the vacuum to form compartments 22 for containing different kinds of drugs, four partitions and four compartments being shown for convenience. The compartments 22 are partly closed by means of a removable end wall 23 which is formed with openings 24 for the passage of drugs from the compartments 22.

The division plate 22 is formed hollow to receive the piston rod 10 when the cham- .ber 5 is filled with medicine, said division plate being formed with screw threads at 22H to receive the end portion of said piston. The piston rod is removed from the head 9 and reversed before the same is inserted in the hollow partition 22', the pis ton head 9 remaining in the tube 5 and coacting with the handle 13 to form a closure for said tube.

A rotatable closure member 25 is pivoted to the removable end wall 23, and said closure is provided with a single opening 26 adapted to register with either of the vopenings 24 of the member whereby the contents of either one of the compartments 22 may be discharged. A protecting cap 27 is removably secured on the outer end of the cap 19 to protect the drugs in the compartments 22.

By means of the improved hypodermio syringe a physician, nurse, or other person engaged in medical work can carry about them, in a convenient form, a number of drugs to be injected into the veins of a person, without danger to the patient. A liquid drug may be carried inthe cap or a. powdered drug as desired and tablets or powdered drugs may be arranged in the compartments 22 of the cap 19. The syringe can be manufactured very cheaply and the parts can be connected by lap joints or screw joints as desired.

In general appearance the syringe resembles a standard fountain pen and lis provided with a resilient holding clip 28 mounted on the cap 19 whereby the device can be secured in a position in a coat pocket or vest pocket.

Various minor changes in the construction of the details of the improved syringe may be made and the parts may be made of barrel and a removable plug for the first named cap.

2. A hypodermic syringe. embracing a syringe barrel having a discharge end, a piston working in the barrel, a. hollow piston rod detachably connected thereto and having a handle at one end disposed out Wardly of the barrel, a cap having a transverse partition removed from one end to contact with the handle whenV said cap is in position, said cap being divided into longitudinal chambers to contain different drugs and having a central bore adapted for securing said piston rod therein in a reverse position, said chambers being` located concentric to the central portion of the cap and communicating with one end thereof, a rotatable closure having a single opening adapted to register with one of the chainbers and a closure mounted tliereover i In testimony whereof, I a'IiiX lmy signa L ture, in presence of two witnesses. Y

ROBB SPORTER. lVitnesses:

RICHD. M. PRICE, A. L. ROMNIE.

Copies of this patent may be obtained for ve cents each, `by addressing the Commissioner of Patents, l

Washington, D. C.

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