US3906947A - Syringe - Google Patents

Syringe Download PDF

Info

Publication number
US3906947A
US3906947A US098225A US9822570A US3906947A US 3906947 A US3906947 A US 3906947A US 098225 A US098225 A US 098225A US 9822570 A US9822570 A US 9822570A US 3906947 A US3906947 A US 3906947A
Authority
US
United States
Prior art keywords
barrel
flange
fluid
cannula
syringe
Prior art date
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
US098225A
Other languages
English (en)
Inventor
Harold S Cloyd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US098225A priority Critical patent/US3906947A/en
Priority to DE19712161675 priority patent/DE2161675A1/de
Priority to IT54731/71A priority patent/IT945428B/it
Priority to GB5828971A priority patent/GB1334029A/en
Priority to FR7145142A priority patent/FR2118668A5/fr
Application granted granted Critical
Publication of US3906947A publication Critical patent/US3906947A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • A61M5/2422—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule
    • A61M5/2429—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic using emptying means to expel or eject media, e.g. pistons, deformation of the ampoule, or telescoping of the ampoule by telescoping of ampoules or carpules with the syringe body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31513—Piston constructions to improve sealing or sliding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod

Definitions

  • This invention is a syringe which consists essentially of three molded plastic parts; a plunger, piston and cannula; a barrel; and a cap for the cannula.
  • FIG. 1 is a longitudinal section on line 1-l of FIG. 3 through a preferred form of syringe
  • FIG. 2 is an enlarged fragmentary section of the piston
  • FIG. 3 is a section on line 3-3 of FIG. 1.
  • the barrel of the syringe is a fluid containing vial 1 closed at one end 2 and having a finger gripping flange 3 at its opposite or open end.
  • the vial may be made of one of the flexible plastics such as polypropylene or other plastic compatible with the fluid contents.
  • the cannula 4 likewise of molded plastic, has its fluid receiving end 5 presented to the closed end of the barrel and has its fluid discharging end 6 projecting outside the open end of the barrel.
  • the fluid discharging end is normally closed or protected by a cap 7 which may be of any suitable plastic or other material.
  • the fluid receiving end of the cannula is integral with a circular end wall 8 having an integral hollow cylindri cal peripheral flange 9 extending toward the open end of the barrel. Integral with the inner edge of the flange 9 is the inner edge 10 of an annular flange 1 1 extending outwardly at an acute angle toward the bottom wall of the barrel.
  • the annular flange 11 is relatively thick, for example 30 mils, and is quite narrow or short as measured in a plane including the axis of the barrel for example one-eighth inch, so that it is relatively stiff.
  • the outside diameter of the outer edge 13 of the annular flange is from 5 to 20 mils greater than the inside diameter of the bore of the vial so the deflection of the flange 1 1 results in adequate pressure between the edge 13 and the bore of the barrel so that the syringe can be shipped assembled and filled with the fluid to be dispensed.
  • the outer edge of the flange 11 is not feathered so that adequate sealing pressure is built up by deflection of the flange to maintain the seal under static conditions.
  • the end wall 8, flanges 9, 11 and junction 15 between the flanges comprise the piston.
  • the junction 15 between the flanges 9 and 11 is joined to a cylindrical wall or plunger 16 which has a loose sliding fit in the barrel 1.
  • a rigid support for the cannula 4 is provided by a plurality of axially extending ribs 18 having inner ends 19 joined to the end wall 8 and having inner and outer edges 20 and 21 joined respectively to the outer surface of the cannula 4 and the inner surface of the cylindrical wall 16.
  • the flexible plastic flange 11 has no tendency to stick to the barrel and does not require lubrication, an important advantage in syringes which are to be shipped assembled and filled.
  • a syringe comprising a barrel closed fluid tight at one end and open at the other end, and a single piece of flexible plastic which forms the seal to the barrel required for shipping the syringe assembled and filled with the fluid to be dispensed and constitutes a cannula, piston and plunger,
  • said cannula having a fluid receiving end presented to the closed end of the barrel and a fluid discharging end extending out through the open end of the barrel, said plunger having one end. outside the open end of the barrel and the other end inside the barrel,
  • said piston having an end wall at the other end of the plunger integral with said fluid receiving end of the cannula and a peripheral flange extending from said end wall back toward the open end of the barre] and an annular flange having its inner edge integral with said peripheral flange, said flange diverging from said peripheral flange toward the closed end of the barrel at an acute angle and having sliding contact with the bore of the barrel,
  • said seal to the barrel required for shipping the syringe assembled and filled with the fluid to be dispensed resulting from the outside diameter of the outer edge of said flange being greater than the in side diameter of the bore of the vial and said flange being stiff enough so the deflection of the flange by static engagement of the outer edge of the flange and the bore results in adequate sealing pressure between the outer edge of the flange and the bore of the barrel to provide and maintain a leak proof seal under static conditions so that the syringe can be shipped assembled and filled with the fluid to be dispensed, the essential stiffness of the flange and sealing pressure under static conditions being obtained when said flange is thick and narrow and has a thick non feathered outer edge of outside diameter greater than the bore of the barrel,
  • a syringe comprising a barrel closed fluid tight at one end and open at the other end, and a single piece of flexible plastic which forms the seal to the barrel required for shipping the syringe assembled and filled with the fluid to be dispensed and constitutes a cannula, piston and plunger,
  • said cannula having a fluid receiving end presented to the closed end of the barrel and a fluid discharging end extending out through the open end of the barrel,
  • said plunger having one end outside the open end of the barrel and the other end inside the barrel
  • the piston having an end wall. at the other end of the plunger integral with said fluid receiving end of the cannula and an annular flange having its inner edge integral with the periphery of said wall, said flange diverging from the periphery of said wall toward the closed end of the barrel at an acute angle and having sliding contact with the bore of the barrel,
  • the plunger having axially extending ribs projecting from said cannula, said ribs having ends joined to said bottom wall and having longitudinal edges joined to said cannula,
  • said seal to the barrel required for shipping the syringe assembled and filled with the fluid to be dispensed resulting from the outside diameter of the outer edge of said flange being greater than the inside diameter of the bore of the vial and said flange being stiff enough so the deflection of the flange by static engagement of the outer edge of the flange and the bore result in adequate sealing pressure between the outer edge of the flange and the bore of the barrel to provide and maintain a leak proof seal under static conditions so that the syringe can be assembled and filled with the fluid to be dispensed, the essential stiffness of the flange and sealing pressure under static conditions being obtained when said flange is thick and narrow and has a thick non feathered outer edge of outside diameter greater than the bore of the barrel, and removable means on and closing the fluid discharge end of the cannula.

Landscapes

  • Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
US098225A 1970-12-15 1970-12-15 Syringe Expired - Lifetime US3906947A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US098225A US3906947A (en) 1970-12-15 1970-12-15 Syringe
DE19712161675 DE2161675A1 (de) 1970-12-15 1971-12-13 Spritze
IT54731/71A IT945428B (it) 1970-12-15 1971-12-14 Perfezionamento nelle siringhe in materiale plastico
GB5828971A GB1334029A (en) 1970-12-15 1971-12-15 Syringe
FR7145142A FR2118668A5 (de) 1970-12-15 1971-12-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US098225A US3906947A (en) 1970-12-15 1970-12-15 Syringe

Publications (1)

Publication Number Publication Date
US3906947A true US3906947A (en) 1975-09-23

Family

ID=22268153

Family Applications (1)

Application Number Title Priority Date Filing Date
US098225A Expired - Lifetime US3906947A (en) 1970-12-15 1970-12-15 Syringe

Country Status (5)

Country Link
US (1) US3906947A (de)
DE (1) DE2161675A1 (de)
FR (1) FR2118668A5 (de)
GB (1) GB1334029A (de)
IT (1) IT945428B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712715A (en) * 1985-07-06 1987-12-15 Artur Fischer Device for injecting a fixing agent into a drilled hole for anchoring a fastening element inserted in a drilled hole
WO1991000747A1 (en) * 1989-07-12 1991-01-24 Edward Robert James Kayser Hypodermic syringe
US5380297A (en) * 1992-07-28 1995-01-10 Inject Development Limited Syringe
US20020091411A1 (en) * 2000-12-07 2002-07-11 Saker Mark B. Tissue tract sealing device
WO2005001487A1 (en) * 2003-06-27 2005-01-06 Invetech Pty Ltd Method and apparatus for sampling a fluid
EP1799288A1 (de) * 2004-09-16 2007-06-27 Inviro Medical Devices Ltd. Einweg-sicherheitsspritze zur verhinderung von nadelstichverletzungen und wiederverwendung
WO2013113956A2 (es) 2012-01-30 2013-08-08 Biotchnology Institute, I Mas D, S.L. Dispositivo adaptador para reducir o eliminar la posible contaminación bacteriana en un proceso de extracción o transferencia de componentes sanguíneos desde al menos un contenedor

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2932719C2 (de) * 1979-08-13 1985-08-14 Dieter Dr. 7763 Öhningen Lucas Injektionsspritze
DE2951411A1 (de) * 1979-12-20 1981-07-02 Richard 8757 Karlstein Himmelsbach Filtriereinrichtung zur bakteriellen entkeimung von kuehlfluessigkeit bei kieferchirurgischen geraeten
FR2522506B1 (fr) * 1982-01-27 1989-04-28 Biotherax Lab Canule rectale pour injection d'une specialite pharmaceutique sous forme de pate ou de mousse
GB2149308A (en) * 1983-10-19 1985-06-12 Locali Pty Limited Unit dose injection device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US497250A (en) * 1893-05-09 George s
US2448898A (en) * 1945-04-21 1948-09-07 Marshall L Lockhart Hypodermic needle
US2512568A (en) * 1946-08-13 1950-06-20 Jacob A Saffir Hypodermic injection device
US2539510A (en) * 1949-06-03 1951-01-30 Bristol Lab Inc Hypodermic syringe
US2604095A (en) * 1948-12-18 1952-07-22 Brody Nathan Disposable syringe
US3066671A (en) * 1959-10-27 1962-12-04 Milton J Cohen Disposable additive container
US3378008A (en) * 1965-07-23 1968-04-16 Min I Jet Corp Hypodermic syringe with vial

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US497250A (en) * 1893-05-09 George s
US2448898A (en) * 1945-04-21 1948-09-07 Marshall L Lockhart Hypodermic needle
US2512568A (en) * 1946-08-13 1950-06-20 Jacob A Saffir Hypodermic injection device
US2604095A (en) * 1948-12-18 1952-07-22 Brody Nathan Disposable syringe
US2539510A (en) * 1949-06-03 1951-01-30 Bristol Lab Inc Hypodermic syringe
US3066671A (en) * 1959-10-27 1962-12-04 Milton J Cohen Disposable additive container
US3378008A (en) * 1965-07-23 1968-04-16 Min I Jet Corp Hypodermic syringe with vial

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712715A (en) * 1985-07-06 1987-12-15 Artur Fischer Device for injecting a fixing agent into a drilled hole for anchoring a fastening element inserted in a drilled hole
WO1991000747A1 (en) * 1989-07-12 1991-01-24 Edward Robert James Kayser Hypodermic syringe
GB2239608A (en) * 1989-07-12 1991-07-10 Edward Robert James Kayser Hypodermic syringe
GB2239608B (en) * 1989-07-12 1993-01-20 Edward Robert James Kayser Hypodermic syringe
US5380297A (en) * 1992-07-28 1995-01-10 Inject Development Limited Syringe
US20020091411A1 (en) * 2000-12-07 2002-07-11 Saker Mark B. Tissue tract sealing device
US6840952B2 (en) * 2000-12-07 2005-01-11 Mark B. Saker Tissue tract sealing device
WO2005001487A1 (en) * 2003-06-27 2005-01-06 Invetech Pty Ltd Method and apparatus for sampling a fluid
US20070056360A1 (en) * 2003-06-27 2007-03-15 Invetech Pty Ltd Method and apparatus for sampling a fluid
EP1799288A1 (de) * 2004-09-16 2007-06-27 Inviro Medical Devices Ltd. Einweg-sicherheitsspritze zur verhinderung von nadelstichverletzungen und wiederverwendung
EP1799288A4 (de) * 2004-09-16 2008-11-19 Inviro Medical Devices Inc Einweg-sicherheitsspritze zur verhinderung von nadelstichverletzungen und wiederverwendung
WO2013113956A2 (es) 2012-01-30 2013-08-08 Biotchnology Institute, I Mas D, S.L. Dispositivo adaptador para reducir o eliminar la posible contaminación bacteriana en un proceso de extracción o transferencia de componentes sanguíneos desde al menos un contenedor

Also Published As

Publication number Publication date
DE2161675A1 (de) 1972-07-20
IT945428B (it) 1973-05-10
GB1334029A (en) 1973-10-17
FR2118668A5 (de) 1972-07-28

Similar Documents

Publication Publication Date Title
US3906947A (en) Syringe
US3096763A (en) Hypodermic syringes and needle hubs therefor
US4500310A (en) Variable sealing pressure plunger rod assembly
US3494359A (en) Two compartment syringe with a single barrel
US2677373A (en) Plastic injection device
US3537605A (en) Compartmented containers having a rupturable diaphragm between compartments
US3916893A (en) Single-injection device
US3656480A (en) Syringe
GB1086763A (en) Improved hypodermic assembly and method of making the same
US3084688A (en) Disposable hypodermic syringe
CZ278545B6 (en) Disposable plastic syringe
US3916894A (en) Syringe seals and piston
US20160082193A1 (en) Pharmaceutical syringe piston
GB1331140A (en) Centrifuge tube
GB1471375A (en) Syringe for storage and preservation of an injection fluid
IE34968L (en) Medication package.
ES269032Y (es) Cierre de fondo, de material sintetico elastico, utilizable como piston de extraccion a presion o extinsion para masas plasticas viscosas.
US2959170A (en) Hypodermic syringe
IL41233A (en) A double bottle structure
US791802A (en) Hypodermic syringe.
US2720880A (en) Disposable cartridge syringe
US2831483A (en) Disposable hypodermic syringe
US3227161A (en) Syringe
US3373743A (en) Disposable hypodermic syringe
GB1166050A (en) Improvements in or relating to Syringes