GB777302A - Improvements in or relating to hypodermic injector - Google Patents

Improvements in or relating to hypodermic injector

Info

Publication number
GB777302A
GB777302A GB20760/55A GB2076055A GB777302A GB 777302 A GB777302 A GB 777302A GB 20760/55 A GB20760/55 A GB 20760/55A GB 2076055 A GB2076055 A GB 2076055A GB 777302 A GB777302 A GB 777302A
Authority
GB
United Kingdom
Prior art keywords
springs
plunger
winding
piston
medicament
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
Application number
GB20760/55A
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.)
Catalent Pharma Solutions Inc
Original Assignee
Catalent Pharma Solutions Inc
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 Catalent Pharma Solutions Inc filed Critical Catalent Pharma Solutions Inc
Publication of GB777302A publication Critical patent/GB777302A/en
Expired legal-status Critical Current

Links

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
    • A61M5/30—Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
    • 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

Abstract

777,302. Hypodermic infection devices. SCHERER CORPORATION. R. P. Julv 18, 1955 [Sept. 7, 1954], No. 20760/55. Class 81(2) The power means for operating a needleless hypodermic injector comprises a number of pairs of diametrically placed springs. The appliance described has a primary plunger 50 and a secondary plunger 60, so actuated by spring means bearing on a disc 70 that the plunger 50 strikes the ampoule piston 46, over a small area, thereby giving an initial high pressure injection, and thereafter the disc 70 engages the head 64 of the secondary plunger 60 so that both plungers more downward together, bearing on the whole area of the piston 46. This arrangement is similar to that described in Specification 705,515. However, in the present apparatus the power springs are arranged in diametrical pairs around the central axis, each pair consisting of two concentric, oppositely wound springs 80, 81, and having a guide rod 71a at their centre. The winding stem 74 has a double thread and is rotated, to compress the power springs, by the winding head 14, and is latched, prior to winding, by wedge latches 82 engaging under a pin 76. These wedges are withdrawn by pressure on a knob 90 to allow their outer ends to' pass into recesses 92. The primary plunger 50 engages the sleeve 72 with a single thread only so that fine adjustment of its position in relation to the ampoule piston 46 can be obtained. If the diametrically opposite springs are of different periodicity the tendency to eject the medicament with a high frequency surge is minimized. A dosage sleeve 12 is threaded on to the body 10 so that any predetermined quantity of medicament can be expelled prior to the injection. It is retained in various set positions by a spring arm 15 engaging in locating notches.
GB20760/55A 1954-09-07 1955-07-18 Improvements in or relating to hypodermic injector Expired GB777302A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US454447A US2762370A (en) 1954-09-07 1954-09-07 Hypodermic injector

Publications (1)

Publication Number Publication Date
GB777302A true GB777302A (en) 1957-06-19

Family

ID=23804639

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20760/55A Expired GB777302A (en) 1954-09-07 1955-07-18 Improvements in or relating to hypodermic injector

Country Status (3)

Country Link
US (1) US2762370A (en)
DE (1) DE1094409B (en)
GB (1) GB777302A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143737A (en) * 1982-05-27 1985-02-20 Preci Tech Ltd Needleless injector
GB2581514A (en) * 2019-02-22 2020-08-26 Danby Medical Ltd Infusion Pump

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB964585A (en) * 1960-03-23
GB995605A (en) * 1960-08-04 1965-06-23 Amalgamated Dental Co Ltd Improvements relating to hypodermic injection apparatus
CH400462A (en) * 1961-10-07 1965-10-15 Penicillin Ges Dauelsberg & Co Injection syringe
US3202151A (en) * 1963-04-08 1965-08-24 Scherer Corp R P Multidose jet injector
US3335722A (en) * 1963-11-01 1967-08-15 Olin Mathieson Hypodermic device
US4089334A (en) * 1976-10-07 1978-05-16 Schwebel Paul R Pyrotechnically powered needleless injector
US4722728A (en) * 1987-01-23 1988-02-02 Patents Unlimited, Ltd. Needleless hypodermic injector
CA1325149C (en) * 1989-08-31 1993-12-14 Gavin Mcgregor Variable intensity remote controlled needleless injector
AU5293393A (en) * 1992-09-28 1994-04-26 Equidyne Systems, Incorporated Hypodermic jet injector
US5569189A (en) * 1992-09-28 1996-10-29 Equidyne Systems, Inc. hypodermic jet injector
US5599302A (en) * 1995-01-09 1997-02-04 Medi-Ject Corporation Medical injection system and method, gas spring thereof and launching device using gas spring
US5722953A (en) * 1996-02-29 1998-03-03 Medi-Ject Corporation Nozzle assembly for injection device
US5643211A (en) * 1996-02-29 1997-07-01 Medi-Ject Corporation Nozzle assembly having a frangible plunger
US5697917A (en) * 1996-02-29 1997-12-16 Medi-Ject Corporation Nozzle assembly with adjustable plunger travel gap
US5800388A (en) * 1996-02-29 1998-09-01 Medi-Ject Corporation Plunger/ram assembly adapted for a fluid injector
US5865795A (en) * 1996-02-29 1999-02-02 Medi-Ject Corporation Safety mechanism for injection devices
US5921967A (en) * 1996-02-29 1999-07-13 Medi-Ject Corporation Plunger for nozzle assembly
WO1997031665A1 (en) * 1996-02-29 1997-09-04 Medi-Ject Corporation Nozzle assembly with adjustable plunger travel gap
US5875976A (en) * 1996-12-24 1999-03-02 Medi-Ject Corporation Locking mechanism for nozzle assembly
US6709427B1 (en) * 1999-08-05 2004-03-23 Kensey Nash Corporation Systems and methods for delivering agents into targeted tissue of a living being
US6210359B1 (en) 2000-01-21 2001-04-03 Jet Medica, L.L.C. Needleless syringe
US20040087897A1 (en) * 2002-07-31 2004-05-06 Birger Hjertman Device and method for liquid jet generation
GB0224505D0 (en) * 2002-10-22 2002-11-27 Medical House The Plc Needles injection device
DE102004007257A1 (en) * 2004-02-10 2005-09-08 Primojex Gmbh Ampule for a needleless injection device comprises an outer distal surface which in the zone of skin contact has a convex and substantially edge-free shape
DE102007008369A1 (en) * 2007-02-16 2008-08-21 Lts Lohmann Therapie-Systeme Ag Disposable injector with at least one central tie rod
US20200360611A1 (en) * 2017-11-10 2020-11-19 Cc - Pharma Gmbh Method and device for the needle-free injecting of fluid into a substrate, and fluid container for use in the method and the device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653602A (en) * 1950-06-17 1953-09-29 Becton Dickinson Co Injection device
US2671347A (en) * 1950-06-24 1954-03-09 Scherer Corp R P Latch structure
DE867594C (en) * 1951-03-19 1953-02-19 Scherer Corp R P Injection syringe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143737A (en) * 1982-05-27 1985-02-20 Preci Tech Ltd Needleless injector
GB2581514A (en) * 2019-02-22 2020-08-26 Danby Medical Ltd Infusion Pump

Also Published As

Publication number Publication date
US2762370A (en) 1956-09-11
DE1094409B (en) 1960-12-08

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