GB993309A - Improved hypodermic injector - Google Patents

Improved hypodermic injector

Info

Publication number
GB993309A
GB993309A GB1303861A GB1303861A GB993309A GB 993309 A GB993309 A GB 993309A GB 1303861 A GB1303861 A GB 1303861A GB 1303861 A GB1303861 A GB 1303861A GB 993309 A GB993309 A GB 993309A
Authority
GB
United Kingdom
Prior art keywords
ampoule
member
springs
guide
injector
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
GB1303861A
Inventor
Douglas Stanley Love
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.)
Express Injector Co Ltd
Original Assignee
Express Injector Co Ltd
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 Express Injector Co Ltd filed Critical Express Injector Co Ltd
Priority to GB1303861A priority Critical patent/GB993309A/en
Publication of GB993309A publication Critical patent/GB993309A/en
Application status is Expired legal-status Critical

Links

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
    • A61M5/30Syringes for injection by jet action, without needle, e.g. for use with replaceable ampoules or carpules
    • 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
    • A61M5/24Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
    • A61M5/2422Ampoule 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
    • A61M5/2425Ampoule 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 compression of deformable ampoule or carpule wall

Abstract

993,309. Hypodermic injectors. EXPRESS INJECTOR CO. Ltd. April 6, 1962 [April 11, 1961], No. 13038/61. Heading A5R. A hypodermic injector comprises a housing 10 surrounding the nearly uniform thin walls of an ampoule 11 to support it against any expansion when means 15 impart to its rear end first a percussive force to produce a transient high pressure which discharges medicament from the ampoule followed by a compressive force capable of introverting the ampoule as in Fig. 2 and discharging the remaining medicament from it at a reduced pressure. The front end of the ampoule may be closed by a plug 12 with a minute orifice 13 enabling the medicament to pierce the skin without use of a hypodermic needle or the plug 43 as in Fig. 7 may be of plastic formed with a thin walled nozzle 43 of large bore to cooperate with an orifice 44 formed in the cap 44 which holds the ampoule in the housing of the injector. The rear, thin wall of the ampoule may be flat, stepped annularly as in Fig. 3, or annularly bevelled (Fig. 5, not shown). The plug 43 is assembled to the ampoule shell 42 with a gap 49 which is taken up when the ampoule is screwed home in the housing by the cap 44, thereby ejecting any air bubbles present in the ampoule. The plunger 15 which applies the load to the ampoule is driven by a guide 18 which compresses springs 21 and 22 between a flange on its lower end and a flange on a guide member 17 which is held on the injector casing 16 by a screwed cap 29 which can be turned to adjust the tension of the springs. The guide 18 is mounted telescopically on the member 17 and the springs are held in compression by balls 26 located in holes 25 in the guide member 17 which are locked in a groove 18a around the inside of the member 18 by the conical end 23a of a plunger 23 on a button 28 which is movable with respect to the member 17 against a spring 24. When the button 28 is depressed the plunger head 23a frees the balls 26 from the groove 18a allowing the guide 18 to fly forward and strike the plunger 15 a blow which is followed by a steady pressure, due to the residual compression on the springs. A loading device (not shown) is provided for putting the initial compression on the springs 21 and 22. The members 17 and 18 can be locked together by rotation of a ring 34 on the member 17. Specifications 964,584 and 964,585 are referred to.
GB1303861A 1961-04-11 1961-04-11 Improved hypodermic injector Expired GB993309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1303861A GB993309A (en) 1961-04-11 1961-04-11 Improved hypodermic injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1303861A GB993309A (en) 1961-04-11 1961-04-11 Improved hypodermic injector

Publications (1)

Publication Number Publication Date
GB993309A true GB993309A (en) 1965-05-26

Family

ID=10015671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1303861A Expired GB993309A (en) 1961-04-11 1961-04-11 Improved hypodermic injector

Country Status (1)

Country Link
GB (1) GB993309A (en)

Cited By (12)

* 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
WO1995003844A1 (en) * 1993-07-31 1995-02-09 Weston Medical Limited Needle-less injector
US5480381A (en) * 1991-08-23 1996-01-02 Weston Medical Limited Needle-less injector
WO1996024398A1 (en) * 1995-02-06 1996-08-15 Weston Medical Limited Needle-less injector
DE29507987U1 (en) * 1995-05-15 1996-09-19 Ferton Holding An ejection device for a liquid Hochdruckejektion
EP1125593A1 (en) * 2000-02-16 2001-08-22 Roche Diagnostics GmbH Hypodermic needleless injection system
WO2004037327A2 (en) * 2002-10-22 2004-05-06 The Medical House Plc Needleless injection device
WO2004037328A2 (en) * 2002-10-22 2004-05-06 The Medical House Plc Needleless injection device
US7615234B2 (en) 2001-09-11 2009-11-10 Glide Pharmaceutical Technologies Limited Drug delivery technology
US7727223B2 (en) 2001-09-11 2010-06-01 Glide Pharmaceutical Technologies Limited Drug delivery technology
US7862543B2 (en) 2002-08-05 2011-01-04 Glide Pharmaceutical Technologies Limited Drug delivery system
US9072472B2 (en) 2005-02-07 2015-07-07 Glide Pharmaceutical Technologies Limited Disposable assembly containing a skin piercing element

Cited By (21)

* 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
US5480381A (en) * 1991-08-23 1996-01-02 Weston Medical Limited Needle-less injector
WO1995003844A1 (en) * 1993-07-31 1995-02-09 Weston Medical Limited Needle-less injector
US5891086A (en) * 1993-07-31 1999-04-06 Weston Medical Limited Needle-less injector
EP1020200A2 (en) * 1993-07-31 2000-07-19 Weston Medical Limited Needle-less injector
EP1020200A3 (en) * 1993-07-31 2001-12-05 Weston Medical Limited Needle-less injector
WO1996024398A1 (en) * 1995-02-06 1996-08-15 Weston Medical Limited Needle-less injector
DE29507987U1 (en) * 1995-05-15 1996-09-19 Ferton Holding An ejection device for a liquid Hochdruckejektion
EP1125593A1 (en) * 2000-02-16 2001-08-22 Roche Diagnostics GmbH Hypodermic needleless injection system
US6440099B2 (en) 2000-02-16 2002-08-27 Roche Diagnostics Gmbh Hypodermic needleless injection system
US7727223B2 (en) 2001-09-11 2010-06-01 Glide Pharmaceutical Technologies Limited Drug delivery technology
US8574188B2 (en) 2001-09-11 2013-11-05 Glide Pharmaceutical Technologies Limited Drug delivery technology
US8088406B2 (en) 2001-09-11 2012-01-03 Glide Pharmaceutical Technologies Limited Pioneer projectile drug delivery technology
US7615234B2 (en) 2001-09-11 2009-11-10 Glide Pharmaceutical Technologies Limited Drug delivery technology
US7862543B2 (en) 2002-08-05 2011-01-04 Glide Pharmaceutical Technologies Limited Drug delivery system
WO2004037327A2 (en) * 2002-10-22 2004-05-06 The Medical House Plc Needleless injection device
US7744561B2 (en) 2002-10-22 2010-06-29 The Medical House Plc Needleless injection device
WO2004037328A3 (en) * 2002-10-22 2004-09-10 Medical House Plc Needleless injection device
WO2004037327A3 (en) * 2002-10-22 2004-08-26 Medical House Plc Needleless injection device
WO2004037328A2 (en) * 2002-10-22 2004-05-06 The Medical House Plc Needleless injection device
US9072472B2 (en) 2005-02-07 2015-07-07 Glide Pharmaceutical Technologies Limited Disposable assembly containing a skin piercing element

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