US1771219A - Syringe - Google Patents

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Publication number
US1771219A
US1771219A US139243A US13924326A US1771219A US 1771219 A US1771219 A US 1771219A US 139243 A US139243 A US 139243A US 13924326 A US13924326 A US 13924326A US 1771219 A US1771219 A US 1771219A
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United States
Prior art keywords
barrel
piston
syringe
groove
plug
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US139243A
Inventor
George N Hein
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Individual
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Individual
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Publication date
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Priority to US139243A priority Critical patent/US1771219A/en
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Publication of US1771219A publication Critical patent/US1771219A/en
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Classifications

    • 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
    • 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
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • 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
    • A61M5/3129Syringe barrels
    • A61M2005/3131Syringe barrels specially adapted for improving sealing or sliding
    • 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
    • A61M5/31501Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit
    • A61M2005/31506Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit formed as a single piece, e.g. moulded
    • 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
    • A61M5/3129Syringe barrels
    • 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
    • A61M5/3148Means for causing or aiding aspiration or plunger retraction

Definitions

  • Fig. l shows a central longitudinal sectional view cfa syringe embodying my invention
  • Fig. 2 shows a similar view with the plunger removed from the barrel
  • Fig. 3 shows a central longitudinal sectional view ofa modified form of the device
  • Fig. 4 shows a similar view ⁇ with the plunger removed from the barrel;
  • Fig. 5 shows a central longitudinal sectional view of a still further modiiication
  • Fig. 6 shows a det'ail of a modified form ao of piston and barrel embodying my invention.
  • Fig. 7 shows. a modified form of barrel, wherein ya projection or bead is formed on the-interior of the barrel..
  • Fig. 8 shows a further modification, in
  • the syringe comprises a ,barrel 10,
  • the barrel is provided with a circumferential groove 13 at its outer end, as shown in Figs. 1 and 2, and
  • the piston is provided with a head 15 which is formed with a bead 16 covered by an elastic packing ring 17 to cooperate with the grooves.
  • the barrel is preferably ta ered, gradualiy diminishing I@ m diameter om the outer groove tc the inner groove, so as to increase the friction when the plunger is moved inwardly.
  • Fig. 6 I show a modification wherein a groove 18 is formed in the piston head and an elastic packing ring 19 is applied to the 55 barrel.
  • the end of the barrel 95 may have a bead or projection 20 to co-operate with the head of the piston.
  • This bead or projection is beveled as shown at 21, sothat the head of the piston may be inserted with greater ease. 1
  • Fig. 8 I show an annular groove 22 in the end of the barrel, to oo-operate with a projection on the piston head.
  • a spiral slot or lgroove 23 leading from the open end of the barrel to the annular groove 22, so that the piston may be inserted with a turning movement.
  • the stem 11 is slidably received in a plug 24 which fits withinthe barrel with a screw tapered sent and forms a closure for the barrel as well as a guide and bearing for the piston and its stem.
  • the stem has coiled upon it a helical spring 25, one end of which abuts against the plug 24 and the other end against the grip member 26 on the end of the stem. This spring is eXpansible and serves to return the piston to its outermost position. By reason of the fact that it abuts against the plug 24,
  • a syringe comprising a barrel, a move ble piston, an elastic packing on the head of the piston, said barrel being provided with an indentation at its outer 'end and a similar indentation at its inner end, with which the head co-operates when at rest infully extended or retracted position.
  • 'A syringe comprising a barrel and a movable piston, said barrel being provided with a groove in its outer end and a packing on the head of the piston to co-operate with said groove when at rest in fully extended position.
  • a syringe comprising a barrel and a movable piston, said barrel being provided with a groove near its outer end and a similar groove near its inner end, and a packing on the piston to co-operate with said grooves when at rest in fully extended or retracted position.
  • a syringe comprising a barrel and a sliding piston, said barrel being provided' with a groove near its outer end and being tapered inwardly therefrom towards .its inner end, and the head of the piston being provided with a packing to co-operate with said groove when at rest in fully extended position.

Description

July Z2, 1930. s. N. HEIN 1,771,219
l SYRINGE rma oet. 4, 192e F; n.1. A /5 26 l Ik F Patented July 22', 1930 PATENT OFFICE GEORGE N. HEIN, OF SAN FRANGISCO, CALIFORNIA SYRINGE Application led October 4, 1926. Serial No. 139,243.
5 the working qualities of hypodermic, irrigating, and other types of syringes, making it possible to take them apart for sterilization or replacement of parts, and also to assemble for use. This is br'ought about by the novel employment` of one or more projections and epressions in the bore of the syringe barrels, which,when used in connection with apacking member, will retain said packing member in the desired location and also relieve tension on it and act as a seal for the contents of the syringe.
In the accompanying drawing, Fig. l shows a central longitudinal sectional view cfa syringe embodying my invention; f
Fig. 2 shows a similar view with the plunger removed from the barrel; Fig. 3 shows a central longitudinal sectional view ofa modified form of the device; 26 Fig. 4 shows a similar view `with the plunger removed from the barrel;
Fig. 5 shows a central longitudinal sectional view of a still further modiiication;
Fig. 6 shows a det'ail of a modified form ao of piston and barrel embodying my invention.
Fig. 7 shows. a modified form of barrel, wherein ya projection or bead is formed on the-interior of the barrel..
Fig. 8 shows a further modification, in
85 that the groove in the barrel isprovided with a spiral entrance -slot or groove to' admit the piston. f
Referring in detail to: the accompanying drawing the syringe comprises a ,barrel 10,
0 piston 11, and needle 12. The barrel is provided with a circumferential groove 13 at its outer end, as shown in Figs. 1 and 2, and
in addition a similar groove'14 is provided at the inner end, as shown in Figs. 8, 4, and 5.
The piston is provided with a head 15 which is formed with a bead 16 covered by an elastic packing ring 17 to cooperate with the grooves.- As shown in Fig. 5, the barrel is preferably ta ered, gradualiy diminishing I@ m diameter om the outer groove tc the inner groove, so as to increase the friction when the plunger is moved inwardly.
In Fig. 6 I show a modification wherein a groove 18 is formed in the piston head and an elastic packing ring 19 is applied to the 55 barrel.
The points of advantage over syringes now conventionally used are as follows:
First, establishment of a line of dem-arcation at the outer end of the barrel, by virtue of the groove 13. This registers to the operator whenfthepiston has fully entered the chamber;
Second, a gradual taper in the bore of the syringe barrel from the line of demarcation 65 13 to a point distant from the piston chamber. This permits the easy ingress of the piston and free movement of the same during initial discharge of the syringe contents, thereby giving the operator full control of gradual ejection of medicaments, and preventing posy sible trauma and shock to the patient. When the syringe 4is filled throughthe needle 'end by the retraction of the piston, the abruptness of the outer portion of the line of demarcation registers 'clearly to the operators handt indicating that 'the syringe` is completely lled. l
Third, piston retention. The construction of the line of. demarcation 30 Vasa groove serves to retain the piston in place the syringe barrel relieves pressure on the elastic packing member when the syringe is not in use, and also prevents the piston from falling out. After sterilization a syringe constructed with this groove may be assembled with the iston inserted full length,
j so as to be ready or instant use, and prevent A possible contamination of the piston.
s shown in Fig. 7, the end of the barrel 95 may have a bead or projection 20 to co-operate with the head of the piston. This bead or projection is beveled as shown at 21, sothat the head of the piston may be inserted with greater ease. 1
In Fig. 8 I show an annular groove 22 in the end of the barrel, to oo-operate with a projection on the piston head. There 1s a spiral slot or lgroove 23 leading from the open end of the barrel to the annular groove 22, so that the piston may be inserted with a turning movement.
In the form shown in Figs. 1 and 2 the stem 11 is slidably received in a plug 24 which fits withinthe barrel with a screw tapered sent and forms a closure for the barrel as well as a guide and bearing for the piston and its stem. The stem has coiled upon it a helical spring 25, one end of which abuts against the plug 24 and the other end against the grip member 26 on the end of the stem. This spring is eXpansible and serves to return the piston to its outermost position. By reason of the fact that it abuts against the plug 24,
the pist-on upon striking the plug will not tend to dislodge the plug from its seat within the barrel, the force with which the piston strikes the said plug being neutralized by the pressure of the spring on the opposite side of the plug. In this way, a convenient, automatic return of the piston is rovided, in combination with a smooth-fitting, removable plug for the end of the barrel, such a plug having decided advantages over the ordinary, threaded plug, which is slow and cumbersome to remove.
Having thus described my invention, what I claim as new vand desire to secure by Letters Patent is: n
1. A syringe comprising a barrel, a move ble piston, an elastic packing on the head of the piston, said barrel being provided with an indentation at its outer 'end and a similar indentation at its inner end, with which the head co-operates when at rest infully extended or retracted position.
2. 'A syringe comprising a barrel and a movable piston, said barrel being provided with a groove in its outer end and a packing on the head of the piston to co-operate with said groove when at rest in fully extended position.
3. A syringe comprising a barrel and a movable piston, said barrel being provided with a groove near its outer end and a similar groove near its inner end, and a packing on the piston to co-operate with said grooves when at rest in fully extended or retracted position.
4. A syringe comprising a barrel and a sliding piston, said barrel being provided' with a groove near its outer end and being tapered inwardly therefrom towards .its inner end, and the head of the piston being provided with a packing to co-operate with said groove when at rest in fully extended position.
GEORGE N. I DEIN.
US139243A 1926-10-04 1926-10-04 Syringe Expired - Lifetime US1771219A (en)

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Application Number Priority Date Filing Date Title
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US1771219A true US1771219A (en) 1930-07-22

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445667A (en) * 1943-10-22 1948-07-20 Winona Tool Mfg Company Electrical circuit tester
US2618264A (en) * 1950-11-25 1952-11-18 Allan P Bloxsom Lubricated syringe
US2688325A (en) * 1952-09-12 1954-09-07 Compule Corp Piston plug withdrawal limiting means for hypodermic syringe devices and the like
US2720880A (en) * 1954-07-09 1955-10-18 Bishop & Co Platinum Works J Disposable cartridge syringe
US2756748A (en) * 1952-01-05 1956-07-31 Becton Dickinson Co Syringe
US3125094A (en) * 1964-03-17 Suction device
US3198194A (en) * 1963-05-13 1965-08-03 Upjohn Co Admixing storage container with means preventing inadvertent removal of closure means
US3552273A (en) * 1968-10-01 1971-01-05 Webley & Scott Ltd Piston and cylinder unit having stroke limiting means
US3700215A (en) * 1970-10-21 1972-10-24 Hardman Inc Mixing and dispensing device
US3943926A (en) * 1974-04-10 1976-03-16 Oscar Arvizu Barragan Wholly disposable dental type syringe
US3957052A (en) * 1974-09-13 1976-05-18 Medical Development Corporation Pumping-syringe
US4030498A (en) * 1974-10-25 1977-06-21 Baxter Travenol Laboratories, Inc. Syringe
US4628795A (en) * 1984-02-09 1986-12-16 Daimler-Benz Aktiengesellschaft Piston of a pressure-medium actuator with a piston rod of adjustable effective length
US4955869A (en) * 1988-02-04 1990-09-11 Vabin International S.R.L. Disposable safety syringe with a hypodermic needle
US20060008370A1 (en) * 2004-07-09 2006-01-12 Protedyne Corporation Liquid handling device with surface features at a seal
US20090187136A1 (en) * 2008-01-18 2009-07-23 Eilaz Babaev Ultrasonic syringe method
US20160235913A1 (en) * 2015-02-18 2016-08-18 Perqflo, Llc Ambulatory Infusion Pumps And Reservoir Assemblies For Use With Same
US10946137B2 (en) 2014-09-30 2021-03-16 Medtronic Minimed, Inc. Hybrid ambulatory infusion pumps
US10967124B2 (en) 2010-11-20 2021-04-06 Medtronic Minimed, Inc. Infusion pumps
US11260171B2 (en) 2017-07-04 2022-03-01 Medtronic Minimed, Inc. Ambulatory infusion pumps and assemblies for use with same
US11547792B2 (en) 2010-09-24 2023-01-10 Medtronic Minimed, Inc. Infusion pumps
US20230118007A1 (en) * 2021-10-18 2023-04-20 Synovent Laboratories, LLC Medical devices and systems for use
US11672909B2 (en) 2016-02-12 2023-06-13 Medtronic Minimed, Inc. Ambulatory infusion pumps and assemblies for use with same

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125094A (en) * 1964-03-17 Suction device
US2445667A (en) * 1943-10-22 1948-07-20 Winona Tool Mfg Company Electrical circuit tester
US2618264A (en) * 1950-11-25 1952-11-18 Allan P Bloxsom Lubricated syringe
US2756748A (en) * 1952-01-05 1956-07-31 Becton Dickinson Co Syringe
US2688325A (en) * 1952-09-12 1954-09-07 Compule Corp Piston plug withdrawal limiting means for hypodermic syringe devices and the like
US2720880A (en) * 1954-07-09 1955-10-18 Bishop & Co Platinum Works J Disposable cartridge syringe
US3198194A (en) * 1963-05-13 1965-08-03 Upjohn Co Admixing storage container with means preventing inadvertent removal of closure means
US3552273A (en) * 1968-10-01 1971-01-05 Webley & Scott Ltd Piston and cylinder unit having stroke limiting means
US3700215A (en) * 1970-10-21 1972-10-24 Hardman Inc Mixing and dispensing device
US3943926A (en) * 1974-04-10 1976-03-16 Oscar Arvizu Barragan Wholly disposable dental type syringe
US3957052A (en) * 1974-09-13 1976-05-18 Medical Development Corporation Pumping-syringe
US4030498A (en) * 1974-10-25 1977-06-21 Baxter Travenol Laboratories, Inc. Syringe
US4628795A (en) * 1984-02-09 1986-12-16 Daimler-Benz Aktiengesellschaft Piston of a pressure-medium actuator with a piston rod of adjustable effective length
US4955869A (en) * 1988-02-04 1990-09-11 Vabin International S.R.L. Disposable safety syringe with a hypodermic needle
US20060008370A1 (en) * 2004-07-09 2006-01-12 Protedyne Corporation Liquid handling device with surface features at a seal
US7246551B2 (en) 2004-07-09 2007-07-24 Protedyne Corporation Liquid handling device with surface features at a seal
WO2006017186A1 (en) * 2004-07-09 2006-02-16 Protedyne Corporation Liquid handling device with surface features at a seal
US20090187136A1 (en) * 2008-01-18 2009-07-23 Eilaz Babaev Ultrasonic syringe method
US20090187135A1 (en) * 2008-01-18 2009-07-23 Eilaz Babaev Ultrasonic syringe
US8449493B2 (en) 2008-01-18 2013-05-28 Eilaz Babaev Ultrasonic syringe method
US11547792B2 (en) 2010-09-24 2023-01-10 Medtronic Minimed, Inc. Infusion pumps
US10967124B2 (en) 2010-11-20 2021-04-06 Medtronic Minimed, Inc. Infusion pumps
US10946137B2 (en) 2014-09-30 2021-03-16 Medtronic Minimed, Inc. Hybrid ambulatory infusion pumps
US10737016B2 (en) * 2015-02-18 2020-08-11 Medtronic Minimed, Inc. Ambulatory infusion pumps and reservoir assemblies for use with same
US20160235913A1 (en) * 2015-02-18 2016-08-18 Perqflo, Llc Ambulatory Infusion Pumps And Reservoir Assemblies For Use With Same
US11684712B2 (en) 2015-02-18 2023-06-27 Medtronic Minimed, Inc. Ambulatory infusion pumps and reservoir assemblies for use with same
US11672909B2 (en) 2016-02-12 2023-06-13 Medtronic Minimed, Inc. Ambulatory infusion pumps and assemblies for use with same
US11260171B2 (en) 2017-07-04 2022-03-01 Medtronic Minimed, Inc. Ambulatory infusion pumps and assemblies for use with same
US20230118007A1 (en) * 2021-10-18 2023-04-20 Synovent Laboratories, LLC Medical devices and systems for use

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