GB1452790A - Automatic injection device - Google Patents

Automatic injection device

Info

Publication number
GB1452790A
GB1452790A GB4820073A GB4820073A GB1452790A GB 1452790 A GB1452790 A GB 1452790A GB 4820073 A GB4820073 A GB 4820073A GB 4820073 A GB4820073 A GB 4820073A GB 1452790 A GB1452790 A GB 1452790A
Authority
GB
United Kingdom
Prior art keywords
syringe
piston
rod
electromagnet
animal
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
GB4820073A
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.)
Gourlandt A J A Gourlandt G C
Gourlandt A J A Gourlandt G C L Cauquelin Y B T
Original Assignee
Gourlandt A J A Gourlandt G C
Gourlandt A J A Gourlandt G C L Cauquelin Y B T
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 Gourlandt A J A Gourlandt G C, Gourlandt A J A Gourlandt G C L Cauquelin Y B T filed Critical Gourlandt A J A Gourlandt G C
Priority to GB4820073A priority Critical patent/GB1452790A/en
Publication of GB1452790A publication Critical patent/GB1452790A/en
Application status is Expired legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00Magnets
    • H01F7/06Electromagnets; Actuators including electromagnets
    • H01F7/08Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16Rectilinearly-movable armatures
    • H01F7/1607Armatures entering the winding
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61DVETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D1/00Surgical instruments for veterinary use
    • A61D1/02Trocars or cannulas for teats; Vaccination appliances
    • A61D1/025Vaccination appliances
    • 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K33/00Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs

Abstract

1452790 Automatic injection device A J A GOURLANDT G C L GOURLANDT Y B T CAUQUELIN and J F R LAFON 16 Oct 1973 48200/73 Heading A5R [Also in Division H2] An automatic injection device comprises a syringe 3, means for retaining and placing an animal in a transverse position and at a given angle with respect to the syringe, means for advancing and withdrawing the syringe and means for displacing a piston 20. The syringe 3 (Fig. 1) is removably mounted on a semitubular extension 6a of a housing 6, the latter housing an electric motor comprising an electromagnet 33 Fig. 3a with a magnetic core 34 forming a piston, between two half-bearings so that the syringe can slide through the bearings. A plate 14 having a right angled abutment member 16 which carries a stud 17 in alignment with an aperture 18 in the plate 14 and at a certain distance from the latter, is adjustably mounted on a casing 1. Plates of different orientation with respect to the syringe axis may be used. The housing 6 is secured to a wall 7 of the casing 1 by a rod 6b (Fig. 3a) projecting through a slit in the wall 7, the latter being aligned in the direction of the common axis of the electromagnet and the syringe. A syringe rod 21 is connected through a syringe head 22 to a movable assembly 23 comprising a rod 23a, a rod head 24, a stud 25 whose ends are supported by the semi-tubular extension 6a, and a rear extension 26 of the rod 23a. A ring 27 screwed on the rear end of the syringe body 8 bears upon a removable tubular element 29 which is provided with a flange 29a abutting against the rear end of the body 8, and has a front face 29b which stops the piston during its rearward stroke. Tubular elements of various lengths may be used to vary the amplitude of the rearward stroke of the piston. The electric winding of the electro-magnet 33 is connected via an electronic assembly to a push-switch 19. A return spring 35 bears, on one hand, upon an end plate 36a, and on the other, upon a piston ring 37 secured to the magnetic core 34 by a hollow screw 38, the latter forming an adjustable stop for the rear extension 26 of the rod 23a. On energizing the electromagnet, the magnetic core 34 along with the moving assembly 23 and the syringe 3 moves in the direction of the arrow F. A needle 13 projects outwardly from the casing 1 and penetrates into the body of the animal. Before a ring 44 abuts against a rod bearing 43, the front face 3a of the ring 27 abuts against the rear face of the semi-bearing 9a thereby stopping the forward displacement of the syringe body 8. The magnetic core 34, however, continues to move forward and a spring 46 is compressed as an increasing resistance to the forward displacement of the piston and the assembly 23 is offered by the injection liquid in the syringe. When the forward stroke of the core is completed, the syringe is gradually decompressed thereby moving the piston forward and injecting the liquid into the animal. During the rearward stroke of the piston when the electromagnet is deenergized, the injection liquid is sucked in the syringe body 8. In another embodiment, the electromagnet is energized by the actuation of one or two contacts caused by putting in place of the foot of the animal.
GB4820073A 1973-10-16 1973-10-16 Automatic injection device Expired GB1452790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4820073A GB1452790A (en) 1973-10-16 1973-10-16 Automatic injection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4820073A GB1452790A (en) 1973-10-16 1973-10-16 Automatic injection device

Publications (1)

Publication Number Publication Date
GB1452790A true GB1452790A (en) 1976-10-13

Family

ID=10447739

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4820073A Expired GB1452790A (en) 1973-10-16 1973-10-16 Automatic injection device

Country Status (1)

Country Link
GB (1) GB1452790A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981003545A1 (en) * 1980-06-06 1981-12-10 Varian Techtron Pty Ltd Syringe drive system
FR2589066A1 (en) * 1985-10-29 1987-04-30 Vadeau Jacqueline Apparatus for injection without a needle
AU572182B2 (en) * 1983-11-22 1988-05-05 C.R. Bard Inc. Battery operated miniture syringe infusion pump
US4863443A (en) * 1988-01-15 1989-09-05 Sterwin Laboratories Inc. Automatic spray apparatus
US5312353A (en) * 1993-03-24 1994-05-17 Boggess Gregory D Modular poultry automatic vaccine injection and spray apparatus
WO1999044657A1 (en) * 1998-03-02 1999-09-10 The Board Of Regents Of The University Of Texas System Tissue penetrating device and methods for using same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981003545A1 (en) * 1980-06-06 1981-12-10 Varian Techtron Pty Ltd Syringe drive system
AU572182B2 (en) * 1983-11-22 1988-05-05 C.R. Bard Inc. Battery operated miniture syringe infusion pump
FR2589066A1 (en) * 1985-10-29 1987-04-30 Vadeau Jacqueline Apparatus for injection without a needle
US4863443A (en) * 1988-01-15 1989-09-05 Sterwin Laboratories Inc. Automatic spray apparatus
US5312353A (en) * 1993-03-24 1994-05-17 Boggess Gregory D Modular poultry automatic vaccine injection and spray apparatus
WO1999044657A1 (en) * 1998-03-02 1999-09-10 The Board Of Regents Of The University Of Texas System Tissue penetrating device and methods for using same
US6183442B1 (en) 1998-03-02 2001-02-06 Board Of Regents Of The University Of Texas System Tissue penetrating device and methods for using same
US6527778B2 (en) 1998-03-02 2003-03-04 The Board Of Regents Of The University Of Texas System Tissue penetrating device and methods for using same
US7226450B2 (en) 1998-03-02 2007-06-05 The Board Of Regents Of The University Of Texas Systems Tissue penetrating device and methods for using same

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee