GB685178A - Improvements relating to hypodermic injection apparatus - Google Patents

Improvements relating to hypodermic injection apparatus

Info

Publication number
GB685178A
GB685178A GB73951A GB73951A GB685178A GB 685178 A GB685178 A GB 685178A GB 73951 A GB73951 A GB 73951A GB 73951 A GB73951 A GB 73951A GB 685178 A GB685178 A GB 685178A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
armature
jaws
stylet
against
ampoule
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
GB73951A
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.)
Becton Dickinson and Co
Original Assignee
Becton Dickinson and Co
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

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
    • A61M5/20Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • 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
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3232Semi-automatic needle retraction, i.e. in which the triggering of the needle retraction requires a deliberate action by the user, e.g. manual release of spring-biased retraction means
    • A61M5/3234Fully automatic, i.e. in which the triggering does not require a deliberate action by the user
    • 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
    • A61M2005/206With automatic needle insertion
    • 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
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3232Semi-automatic needle retraction, i.e. in which the triggering of the needle retraction requires a deliberate action by the user, e.g. manual release of spring-biased retraction means
    • A61M5/3234Fully automatic, i.e. in which the triggering does not require a deliberate action by the user
    • A61M2005/3235Fully automatic, i.e. in which the triggering does not require a deliberate action by the user triggered by radial deflection of the anchoring parts between needle mount and syringe barrel or needle housing, e.g. spreading of needle mount retaining hooks having slanted surfaces by engagement with correspondingly shaped surfaces on the piston at the end of an injection stroke

Abstract

685,178. Hypodermic injection devices. BECTON, DICKINSON & CO. Jan. 10, 1951 [Jan. 17, 1950], No. 739/51. Class 81 (ii). A hypodermic injection device has a needle projectable into body tissues, mechanism for projecting and retracting the needle and mechanism for ejecting medicament from a medicament - receiving chamber into the puncture in the body tissues. The device comprises a casing 10 in the forward part of which is a medicamentreceiving chamber containing an ampoule 20 having stoppers 21, 22, the rear stopper 21 carrying a stylet 24 which projects into the ampoule. Surrounding the medicament-receiving chamber at the forward part of the device is an electromagnet 14 controlled by a switch 15. An armature 16 is normally held in retracted position against a rear cap 13 by a spring 17. A central bore of the armature houses a tube 34 integral with a rod 35 and held against movement relative to the armature by a spring 38. A tension spring 33 is attached at one end within the tube 34 and at the other to a pair of jaws 30 surrounded by a sleeve 32 so that they grip the stylet 24. The jaws 30 are prevented from moving rearwardly by a latch 39 pivoted to the armature 16. In use the forward end of the device is held against the skin and the electromagnet 14 is energised. The armature 16 is thus moved forwardly carrying with it the jaws 30 and the stylet 24 which penetrates the forward stopper 22 of the ampoule and emerges to puncture the skin. When the latch 39 bears against a shoulder 42 of the casing 10 it moves against a leaf spring 41 attached to the armature 16 and releases the jaws 30 which are then retracted by the tension spring 33 and with draw the stylet 24 into the ampoule. With continued forward movement, the armature 16 bears against a stopper 21 of the ampoule and causes ejection of medicament into the puncture made by the stylet 24. The switch 15 is such that the electromagnet 14 remains energised until all the medicament is expelled. As soon as it is de-energised the armature 16 is retracted by the action of the spring 17. The tension spring 33 holds the jaws 30 against the forward part of the tube 34, the sleeve 32 abutting against a shoulder 43 within the central bore of the armature 16 so that it slides relative to the jaws 30, allowing them to release the stylet 24. The spent ampoule and stylet 24 may then be removed and a new one inserted. In order that the jaws 30 may grip the new stylet 24, the rod 35 is pushed into the armature 16 against the action of the spring 38 so that the jaws 30 receive the stylet 24. The sleeve 32 moves along the jaws 30 owing to friction between it and the central bore of the armature 16 thus causing the jaws 30 to grip the stylet 24. As the jaws 30 are moved forwardly, the sleeve 22 overrides the latch 39 which then prevents upward movement of the jaws 30 until the armature 16 is again moved by the action of the electromagnet 14. The rod 35 is then pulled out to its initial position. In an 'alternative construction (not shown) the jaws gripping the stylet are attached to an armature which is moved forwardly by a second electromagnet so that the stylet pierces the skin. A single control unit for energising both electromagnets is provided.
GB73951A 1950-01-17 1951-01-10 Improvements relating to hypodermic injection apparatus Expired GB685178A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US685178X true 1950-01-17 1950-01-17

Publications (1)

Publication Number Publication Date
GB685178A true true GB685178A (en) 1952-12-31

Family

ID=22083083

Family Applications (1)

Application Number Title Priority Date Filing Date
GB73951A Expired GB685178A (en) 1950-01-17 1951-01-10 Improvements relating to hypodermic injection apparatus

Country Status (1)

Country Link
GB (1) GB685178A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832339A (en) * 1953-09-02 1958-04-29 Potter Pharmaceutical Corp Hypodermic injector
WO2008024810A2 (en) * 2005-05-06 2008-02-28 Medtronic Minimed, Inc. Infusion medium delivery system, device and method with needle inserter and needle inserter device and method
WO2012085579A3 (en) * 2010-12-22 2012-08-16 Owen Mumford Limited Autoinjectors
US9259531B2 (en) 2006-02-09 2016-02-16 Deka Products Limited Partnership Adhesive and peripheral systems and methods for medical devices

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2832339A (en) * 1953-09-02 1958-04-29 Potter Pharmaceutical Corp Hypodermic injector
WO2008024810A2 (en) * 2005-05-06 2008-02-28 Medtronic Minimed, Inc. Infusion medium delivery system, device and method with needle inserter and needle inserter device and method
WO2008024810A3 (en) * 2005-05-06 2008-05-08 Medtronic Minimed Inc Infusion medium delivery system, device and method with needle inserter and needle inserter device and method
US9259531B2 (en) 2006-02-09 2016-02-16 Deka Products Limited Partnership Adhesive and peripheral systems and methods for medical devices
US7789857B2 (en) 2006-08-23 2010-09-07 Medtronic Minimed, Inc. Infusion medium delivery system, device and method with needle inserter and needle inserter device and method
US8172804B2 (en) 2006-08-23 2012-05-08 Medtronic Minimed, Inc. Infusion medium delivery system, device and method with needle inserter and needle inserter device and method
US8475432B2 (en) 2006-08-23 2013-07-02 Medtronic Minimed, Inc. Infusion medium delivery system, device and method with needle inserter and needle inserter device and method
WO2012085579A3 (en) * 2010-12-22 2012-08-16 Owen Mumford Limited Autoinjectors

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