US701671A - Hypodermic syringe. - Google Patents

Hypodermic syringe. Download PDF

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Publication number
US701671A
US701671A US1901070706A US701671A US 701671 A US701671 A US 701671A US 1901070706 A US1901070706 A US 1901070706A US 701671 A US701671 A US 701671A
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Prior art keywords
plunger
cylinder
end
valve
seat
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Expired - Lifetime
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John A Billings
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John A Billings
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511Piston or piston-rod constructions, e.g. connection of piston with piston-rod

Description

"Patented June 3, I902. I J. A. BILLINGS.

HYPODERMIC SYBINGE.

(Application filed Aug. 8, 1901.)

(No Model.)

amfia mw UNITED STATEs' PATENT OFFICE.

JOHNA. B'I'LLINGS, OF ROCKLAND, MASSACHUSETTS.

HYPODERMlC SYRINGE.

$PEGIFICATION forming part of Letters Patent No. 701 ,671, dated June 3, 1902. Application filed August 3, 1901- Serial No. 70,706. (No model.)

To all whom, it may concern.-

' Beit known that I, J OHN A. BILLINGS, a citi- Zen of the United States, residing at Rockland, in the county of Plymouth and State of Massachusetts, have invented new and useful Improvements in Hypodermic Syringes, of which the following is a specification.

This invention relates toan' improved hy- 2 represents a central longitudinal section of Fig. 1, showing the plunger or piston partially moved outward-relative to the cylinder.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings.

In the drawings, A representsthe cylinder of a hypodermic syringe, as usual, to the lower end of which is secured "a longitudinally-perforated shank B, terminating in a perforated needle-point C, as is common in devices of this kind. To the opposite end of the cylinder A is detachablysecured a screwthreaded cap D, provided with finger-guards E E, as usual.

F is a suitable packing interposed between the end of the cylinder A and inner portion of the cap D, as usual.

Within the cylinder'A is arranged a reciprocatory hollow plunger or piston G, having a head G on its outer end, as shown, and said head is provided with a projection or pin g, adapted to interlock with a notch or recess d in the cap D when the piston or plunger is forced inward relative to the "cylinder A, as shown in Fig. 1.

Within the head G is a valve-seat G, which is normally closed by means of a screwthreaded valve H, which is screwed into a screw-threaded recess in the end of the head G and is provided on its outer end-with a preferably serrated head or knob 71, by means of whichsaid valve may be turned to and from its seat.

I is a side'perforation or vent in the head G, leading from the outside to a space above the valve-seat .G" in the hollow plunger G, as shown in Fig.2, and said vent serves for the admission of the outer air to the interior of the hollow piston or-plunger G and cylinder A when the plunger or piston is withdrawn from'the cylinder for the purpose of refilling said cylinder, thereby preventing any of-the fluid which may be in the needle from being drawn back into,the syringe. Previous to such withdrawal of the plunger the valve H is screwe away from its seat G", as shown in Fig. 2, thus preventing the liquid from being drawn back through the needle when the plunger is being withdrawn.

In using the device the solution of morphia or other liquid employed is introduced into the cylinder A preferably by first withdrawing the hollow piston G from said cylinder and pouring the liquid into the latter. The plunger G is then inserted into the said cylinder, afterwhich the end of the needle 0 is inserted below the skin where the liquid is to be injected, as usual. The plunger G, its valve H being closed, is then moved inward in the cylinder, causing the liquid to'be forced through theneedle-point. During such expulsion of the liquid and when the plunger G reaches the limit of its inward stroke the head G is prevented from being turned relative to the cap D by reason of the pin g entering the notch 01, and while in this position the knob h is turned sufficiently to cause the valve H to be moved from its seat G, thus establishing an open communication from the hollow plunger G to the outer air through the now open valve Hand vent I, thus allowing the plunger of the syringe to be withdrawn without causing any of the liquid from being drawn into the cylinder during such removal of the plunger. tial, as in the use of the ordinary syringe, when the plunger is removed from the cylinder previous to refilling it, whatever liquid remains in the needle is drawn back into the cylinder, and should that liquid be in any way contaminated it is a source of infection when the syringe is again used. This danger is entirely obviated by this my device This is very essenhaving an adjustable valve and air-inlet arranged at the upper end of the plunger, by which means the outer air is admitted to the cylinder when the plunger is removed.

hat I wish to secure by Letters Patent and claim is- In a hypodermic syringe, the combination with the cylinder provided at one end with a hollow needle and at its other end with a removable screw-cap having a mortise in its outer side at one side of the center, of a hollow reciprocating plunger arranged in the cylinder and provided with an unobstructed opening at its inner end and a valve-seat in its outer end, a threaded valve arranged in the outer end of the plunger and arranged to seat against said valve-seat and close the hollow plunger, a lateral vent formed in the plunger in rear of said valve-seat and leading to the atmosphere whereby when the valve is moved away from its seat the cylinder is placed in communication with the atmosphere, and a pin carried by the outer end of the plunger and arranged to enter said mortise and lock the plunger against rotation when the latter is sheathed within the cylinder, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN A. BILLINGS.

Witnesses:

ALBAN ANDRi'iN, LAURETZ N. MoLLER.

US701671A 1901-08-03 1901-08-03 Hypodermic syringe. Expired - Lifetime US701671A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2851036A (en) * 1955-06-01 1958-09-09 Lee Barry Lab Inc Combination pre-sterilized syringe and container
US2893391A (en) * 1958-08-19 1959-07-07 Sinclair Res Lab Inc Injection apparatus
US3135261A (en) * 1961-09-21 1964-06-02 Theodore H Chamberlin Blood sampler
US4623343A (en) * 1984-03-19 1986-11-18 Quest Medical, Inc. Parenteral fluid administration apparatus and method
US4951848A (en) * 1988-06-03 1990-08-28 Keller Wilhelm A Viscous material dispenser with vented delivery piston
US5147329A (en) * 1987-02-11 1992-09-15 Brannon James K Intravenous access devices
US5674195A (en) * 1995-02-06 1997-10-07 Truthan; Charles Edwin Syringe apparatus and method of mixing liquid medicants within a syringe
USRE36273E (en) * 1995-04-24 1999-08-17 Vascular Logics, Inc. Syringe apparatus for separating blood
US6013037A (en) * 1997-02-07 2000-01-11 Vascular Logics, Inc. Syringe with conduit
US6235002B1 (en) 1998-04-17 2001-05-22 Cdc Technologies, Inc. Syringe for use in fluid-handling apparatus
US20050261620A1 (en) * 2001-02-26 2005-11-24 Ben-Ami Ballin Syringe and a method for its utilization in analysis
US20120323173A1 (en) * 2011-04-18 2012-12-20 Thorne Consulting And Intellectual Property, Llc Medical syringe filling and valving

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2851036A (en) * 1955-06-01 1958-09-09 Lee Barry Lab Inc Combination pre-sterilized syringe and container
US2893391A (en) * 1958-08-19 1959-07-07 Sinclair Res Lab Inc Injection apparatus
US3135261A (en) * 1961-09-21 1964-06-02 Theodore H Chamberlin Blood sampler
US4623343A (en) * 1984-03-19 1986-11-18 Quest Medical, Inc. Parenteral fluid administration apparatus and method
US5147329A (en) * 1987-02-11 1992-09-15 Brannon James K Intravenous access devices
US4951848A (en) * 1988-06-03 1990-08-28 Keller Wilhelm A Viscous material dispenser with vented delivery piston
US5674195A (en) * 1995-02-06 1997-10-07 Truthan; Charles Edwin Syringe apparatus and method of mixing liquid medicants within a syringe
USRE36273E (en) * 1995-04-24 1999-08-17 Vascular Logics, Inc. Syringe apparatus for separating blood
US6013037A (en) * 1997-02-07 2000-01-11 Vascular Logics, Inc. Syringe with conduit
US6235002B1 (en) 1998-04-17 2001-05-22 Cdc Technologies, Inc. Syringe for use in fluid-handling apparatus
US20050261620A1 (en) * 2001-02-26 2005-11-24 Ben-Ami Ballin Syringe and a method for its utilization in analysis
US7195606B2 (en) * 2001-02-26 2007-03-27 Erythrosave Ltd. Syringe and a method for its utilization in analysis
US20120323173A1 (en) * 2011-04-18 2012-12-20 Thorne Consulting And Intellectual Property, Llc Medical syringe filling and valving
US8992505B2 (en) * 2011-04-18 2015-03-31 Thorne Consulting & Intellectual Property, LLC Medical syringe filling and valving

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