US94328A - Improved syringe - Google Patents

Improved syringe Download PDF

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US94328A
US94328A US94328DA US94328A US 94328 A US94328 A US 94328A US 94328D A US94328D A US 94328DA US 94328 A US94328 A US 94328A
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syringe
rod
plunger
valve
head
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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
    • A61M5/20Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M5/204Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically connected to external reservoirs for multiple refilling

Definitions

  • This invention relates to a new and useful improvement in syringes, to be used in the practice of medicine and surgeryand consists inthe method of filling the barrel of theisyringe,iand so constructing the instrnment, that while the barrel may be supplied with the liquid from a reservoir, by means of a tubular plunger, the syringe may be used for receiving and discharging the liquid, the same as an ordinary plun ger-syringe.
  • the syu'nge may be made of either metal or vulcanized rubber, or of any other suitable material, and the feature which distinguishes it from the common plunger-syringe is the reservor A, which forms the handle of the'plunge1z ⁇ B is the plungerrod, which is a tube, with a suitably-packed head on its end, so that it works air-tight in the barrel.
  • C is the barrel or discharge-tubei ofthe syringe.
  • This barrel is pierced with any desired number of small lorifices for the discharge of the liquid, or for admitting the liquid when it is used, like the common plunger-syringe, as seen at c.
  • D is a rod, with a head, E, on i'ts end, which screws into the end of the plunger-handle, as seen at F, the samebeing provided' with elastic or other suitable packing, for makinga tight joint, when the head is screwed in.
  • a loose valve g, which closes the aperture through the tubular pluner-rod B, when the rod is screwed in.
  • v Behind the valve g is a spiral spring, h., which bears against the valve at one end, and against a collar or ⁇ shoulder on the rod, which vspring serves to force the valve forward, so as to close the aperture t', at the end of the plunger-tube.
  • the liquid thus placed in' communication with the atmosphere, and subject to atmospheric pressure, will be. forced through the tubular plunger D int-o the harrel C, from whence it may be discharged by operating the plunger in the ordinary manner, the rod being first screwed in, so as to close the orifice 'i in the plunger.

Description

N" E VH! Millan y1' z'jzy.
thritmi mes'- JAMES F. MCMI-LLEN, OF MANSFIELD, OHIO.
Letters .Patent No. 94,328, dated August 31, 1869.`
IMPRO'V'ED SYRINGE.
The Schedule referred to in these Letters Patent and making part of the lame.
-woor.
To all whom it may concern.:
Be it known that I, J AMES F. MCMILLEN, of Mansfield, in the county of Richland, and State of Ohio, have invented a new and useful ImprovementV in Syringes; and I d0 hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing, forming part of this specification. A
This invention relates to a new and useful improvement in syringes, to be used in the practice of medicine and surgeryand consists inthe method of filling the barrel of theisyringe,iand so constructing the instrnment, that while the barrel may be supplied with the liquid from a reservoir, by means of a tubular plunger, the syringe may be used for receiving and discharging the liquid, the same as an ordinary plun ger-syringe.
The accompanying drawing represents a longitudinal section of a syringe constructed according to my invention.
Similarlettersof reference indicate corresponding parts.
The syu'nge may be made of either metal or vulcanized rubber, or of any other suitable material, and the feature which distinguishes it from the common plunger-syringe is the reservor A, which forms the handle of the'plunge1z` B is the plungerrod, which is a tube, with a suitably-packed head on its end, so that it works air-tight in the barrel.
C is the barrel or discharge-tubei ofthe syringe.
This barrel is pierced with any desired number of small lorifices for the discharge of the liquid, or for admitting the liquid when it is used, like the common plunger-syringe, as seen at c.
D is a rod, with a head, E, on i'ts end, which screws into the end of the plunger-handle, as seen at F, the samebeing provided' with elastic or other suitable packing, for makinga tight joint, when the head is screwed in.
There are air-holes through this head, which will admit air when the head is partially unserewed or drawn back.
At the other end of lthe rod there. is a loose valve, g, which closes the aperture through the tubular pluner-rod B, when the rod is screwed in. v Behind the valve g is a spiral spring, h., which bears against the valve at one end, and against a collar or` shoulder on the rod, which vspring serves to force the valve forward, so as to close the aperture t', at the end of the plunger-tube.
The elasticity of the valve should he but slight, so that when the. rod is partially unscrewed the valve will be drawn back from i. l
The liquid heilig introduced into the reservoir A, through the orifice J, will, when `the rod D is unscrewed or drawn back, allow air to enter the reservoir through the holes in the head E.
The liquid thus placed in' communication with the atmosphere, and subject to atmospheric pressure, will be. forced through the tubular plunger D int-o the harrel C, from whence it may be discharged by operating the plunger in the ordinary manner, the rod being first screwed in, so as to close the orifice 'i in the plunger.
By this arrangement any desired injecting liquidmaybe placed in the reservoir, suicient in quantity for-many applications, while the syringe is at all times in readiness to he used as au ordinary plun ger-syringe.
Having thus described my invention, What I 'claim as new, and desire to secure by Letters Patent, is
In combination with a plunger-syringe, the reservoir A, the tubular plunger-rod B, and rod D, with the valve g, and vspring h, arranged and operating substantially as described, for the purposes set forth.
The above specification of my invention signedby me, this 15th day of June, 1869.
J. F. MCMILLEN.
Witnesses:
FRANK BLocKLnY, ALEX. F. ROBERTS.
US94328D Improved syringe Expired - Lifetime US94328A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090212746A1 (en) * 2008-02-22 2009-08-27 Temic Automotive Of North America, Inc. Systems and Methods for Optimizing the Operation of a Generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090212746A1 (en) * 2008-02-22 2009-08-27 Temic Automotive Of North America, Inc. Systems and Methods for Optimizing the Operation of a Generator

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