Patent EP0405320A2 successfully refreshed from Google Patents.
EP0405320A2
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EP
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Multipurpose automatic injector
Assignee: ELKOM - TOVARNA STIKALNIH NAPRAV
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Filing: 1990-06-20
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Granted: —
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Expires: 2010-06-20
Abstract
Abstract The multipurpose automatic injector for automatic injecting one or more different injection substances in liquid or powder aggregation ensures a several years long period of storage of these different and from each other separated substances and, accordingly, it ensures also the required chemical and pharmacological stability of the same. The injector according to this invention is very simple to be handled as there are only two operation steps required for it to be used, namely: to remove the safety cover (51) and place the tapered tip (15) of the barrel (10) to the administering place and press it by force not exceeding 45 N. All the other operations are carried out by the injector fully automatically so that, after the complete removal of the air from the chamber containing the substance in powder (40), it carries out mixing of the separately stored substances (40) and (42) and unlocking of the automatic discharge mechanism. This is followed by the emanation of the injection needle (22) from the barrel (10) and its entering into the body and at the same time injecting the injection solution. The injector is again ready for use after the discharge mechanism is afresh locked and a new barrel (10) is inserted with all its inner members and substances into the cylindrical body (50).
Inventors
- 👤 Koren Miroslav
- 👤 Marjan Dipl.-Ing. Bezjak
- 👤 Vojvodic Dr. Vladimir
- 👤 Binenfeld Dr. Zlatko
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 13:58
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/28; A61M5/284; A61M5/20; A61M5/2066; A61M5/206
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
240 words
The multipurpose automatic injector for injecting one substance or the solution of more substances in a liquid or a powder aggregation comprises a combination of a substantially cylindrical body containing an discharge mechanism composed of more members and containing a single-chamber or multi-chamber barrel in wich a movable sealing piston is provided which closes said barrel; accommodated in the barrel is a movable separating stopper circumferentially adjoining the inner wall of the barrel in a sealing manner and, consequently, separating the substances from each other so that they can be kept stored for a longer period of time not to lose their chemical and pharmacological stability; furthermore, accommodated in the barrel is an injection needle with a needle holder and a needle guide, as well as a barrel tip which closes the barrel; and that said injector comprises a safety cover pulled on the cylindrical body and a cover of the automatic discharge mechanism firmly attached to the cylindrical body; characterized in that approximately one quarter of the length of the barrel (10) is telescopically inserted in the inside of the cylindrical body (50) the position of the barrel (10) being precisely determined by a semicircular ridge (54) on the inner wall of the cylindrical body (50) when it jumps into the groove (13) in the outer wall of the barrel (10), a part of the barrel (10) outside the cylindrical body (50) being protected by a safety cover. (51).
Claim 2
Dependent Claim
240 words
The multipurpose automatic injector for injecting one substance or the solution of more substances in a liquid or a powder aggregation comprises a combination of a substantially cylindrical body containing an discharge mechanism composed of more members and containing a single-chamber or multi-chamber barrel in wich a movable sealing piston is provided which closes said barrel; accommodated in the barrel is a movable separating stopper circumferentially adjoining the inner wall of the barrel in a sealing manner and, consequently, separating the substances from each other so that they can be kept stored for a longer period of time not to lose their chemical and pharmacological stability; furthermore, accommodated in the barrel is an injection needle with a needle holder and a needle guide, as well as a barrel tip which closes the barrel; and that said injector comprises a safety cover pulled on the cylindrical body and a cover of the automatic discharge mechanism firmly attached to the cylindrical body; characterized in that approximately one quarter of the length of the barrel (10) is telescopically inserted in the inside of the cylindrical body (50) the position of the barrel (10) being precisely determined by a semicircular ridge (54) on the inner wall of the cylindrical body (50) when it jumps into the groove (13) in the outer wall of the barrel (10), a part of the barrel (10) outside the cylindrical body (50) being protected by a safety cover. (51).
Claim 3
Dependent Claim
51 words
The multipurpose automatic injector according to claim 1, characterized in that the barrel (10) is constructed in a form of a proper hollow cylinder without bulges on outer or inner walls, with a reduced inner diameter at the front face of the barrel and made from polypropilene resistant to injection means.
Claim 4
Dependent Claim
86 words
The multipurpose automatic injector according to claims 1 and 2, characterized in that in the inner wall of the barrel (10) three or more longitudinal mutually parallel, circumferentially disposed by-pass channels (11) are provided so that they are recessed inside the inner wall of the barrel (10) and have their outlet slope (17) carried out in the direction of the reduced inner diameter of the wall of the barrel (10), the length of the by-pass channels being longer than the length of the separating stopper (25).
Claim 5
Dependent Claim
44 words
The multipurpose automatic injector according to claims 1-3, characterized in that the barrel (10) has in its outer wall, between the edge (14) and the groove (13) two locking grooves (12) with an arc length 140° and mutually shifted axes of symmetry by 180°.
Claim 6
Dependent Claim
55 words
The multipurpose automatic injector according to claims 1-4, characterized in that inserted in the barrel (10) is a hollow tip (15) of the barrel accommodated in the sphere of its reduced inner diameter, the barrel tip (15) being carried out so that it has on its front plane four or more recessed aeration channels (16).
Claim 7
Dependent Claim
115 words
The multipurpose automatic injector according to claims 1-5, characterized in that the barrel (10) comprises above the by-pass channels a movable separating stopper (25) whose circumference adjoins the inner wall of the barrel (10) in a sealing manner, and that, prior to use of the injector closes the chamber containing the substance in powder (40), thereby keeping it separated from the chamber containing the liquid substance (42); adjoining with its front face the needle holder (23) with the injection needle (22) and that the separating stopper (25) has ribs (26) on the outer circumference whose cross-section has a form of an irregular trapezium and which are with their slopes turned in the direction of operation.
Claim 8
Dependent Claim
110 words
The multipurpose automatic injector according to claims 1,2 and 6, being characterized in that the injection needle (22) is sealingly gripped by the needle holder (23) and they both are accommodated in the middle of the chamber containing the substance in powder (40), in the barrel (10), between the separating stopper (25) and the sealing stopper (20) in such a manner that the injection needle (22) is guided by the needle guide (21) and that the tip of the injection needle (22) is positioned in the dead aperture of the sealing stopper (20) and the entering boring into the injection needle (22) is carried out through the needle holder (23).
Claim 9
Dependent Claim
57 words
The multipurpose automatic injector according to claim 1, being characterized in that in the wall before the tapering of the cylindrical body (50) two partially movable catches (53) are provided whose free ends extend into the inside of the cylindrical body (50) and that have their arc length 40° and mutually shifted axes of symmetry by 180°.
Claim 10
Dependent Claim
43 words
The multipurpose automatic injector according to claims 1 and 8, being characterized in that in the middle of the spring guide (60) the anchor (64) is firmly inserted which with its cone-shaped head extends into the tapered portion of the cylindrical body (50).
Claim 11
Dependent Claim
51 words
The multipurpose automatic injector according to claims 1, 8 and 9, being characterized in that on the outer wall of the tapered portion of the cylindrical body (50) an unlocking ring (62) is positioned with its outer slope and the feelers (63) extending into the inside of the cylindrical body (50).
Claim 12
Dependent Claim
85 words
The multipurpose automatic injector according to claims 1 and 8-10, being characterized in that in the longitudinal slot in the outer wall of the tapered portion of the cylindrical body (50) two unlocking lamellas (65) are inserted with the top legs extending into the tapered portion of the cylindrical body (50) and adjoining the plate (68) and with the middle leg exteding under the head of the anchor (64) while the lower legs with their slope (66) adjoin the slope of the unlocking ring (62).
Claim 13
Dependent Claim
28 words
The multipurpose automatic injector according to claims 1 and 8-11, being characterized in that the unlocking lamellas (65) are encircled and bounded together by the elastic ring (67).
Claim 14
Dependent Claim
31 words
The multipurpose automatic injector according to claims 1-12, being characterized in that on the outer wall of the cylindrical body (50) over the barrel (10) the safety cover (51) is placed.
Claim 15
Dependent Claim
110 words
The multipurpose automatic injector according to claims 1-13, being characterized in that prior to use the user shall remove the safety cover (51), place the tapered tip (15) of the barrel (10) with its aeration channels (16) to the administering place and press continuously the injector by hand, the injection needle (22) piercing the wall of the dead aperture on the sealing stopper (20) resulting in the beginning of the aeration of the chamber, containing the substance in powder (40),through the injection needle (22) and the aeration channels (16) and in the beginning of mixing the liquid substance (42) with the substance in powder (40) through the by-pass channels (11).
Claim 16
Dependent Claim
76 words
The multipurpose automatic injector according to claim 14, being characterized in that after the process of mixing being completed, the discharge mechanism gets automatically unlocked and acts via the sealing piston (27) and the separating stopper (25) upon the injection needle (22) and pushes it forward out of the barrel (10) into the organism simultaneously injecting the injection solution and, that after the injecting action carried out, the safety cover (51) shall be put on again.
Claim 17
Dependent Claim
41 words
The multipurpose automatic injector according to claims 1-15, being characterized in that in the injector the barrel (10) with all its inner members can be changed in such a manner that the barrel (10) is turned by 90° and drawn out.
References Cited (Backward Citations)
No citation records indexed.
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