DE202004016791U1 - Automatic injection unit comprises at least one elastic element which during an injection is displaced so that entry of the needle protection sleeve after the injection into the housing is no longer possible - Google Patents
Automatic injection unit comprises at least one elastic element which during an injection is displaced so that entry of the needle protection sleeve after the injection into the housing is no longer possible Download PDFInfo
- Publication number
- DE202004016791U1 DE202004016791U1 DE200420016791 DE202004016791U DE202004016791U1 DE 202004016791 U1 DE202004016791 U1 DE 202004016791U1 DE 200420016791 DE200420016791 DE 200420016791 DE 202004016791 U DE202004016791 U DE 202004016791U DE 202004016791 U1 DE202004016791 U1 DE 202004016791U1
- Authority
- DE
- Germany
- Prior art keywords
- needle
- injection
- housing
- needle guard
- guide sleeve
- 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 - Lifetime
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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M5/2033—Spring-loaded one-shot injectors with or without automatic needle insertion
-
- 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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/2006—Having specific accessories
- A61M2005/2013—Having specific accessories triggering of discharging means by contact of injector with patient body
-
- 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
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/206—With automatic needle insertion
-
- 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
- A61M5/31—Details
- A61M5/32—Needles; 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
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
-
- 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
- A61M5/31—Details
- A61M5/32—Needles; 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
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
-
- 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
- A61M5/31—Details
- A61M5/32—Needles; 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
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Die Erfindung betrifft einen Autoinjektor mit einem Gehäuse, einer Injektionsnadel, einem relativ zum Gehäuse verschiebbaren Behälter für einen Wirkstoff, einem relativ zum Behälter verschiebbaren Kolben, mit einem relativ zum Gehäuse zwischen einer ausgefahrenen Lage und einer eingefahrenen Lage verschiebbaren Nadelschutz und mit Sperrmitteln, die nach Gebrauch des Autoinjektors ein Verschieben des Nadelschutzes aus der ausgefahrenen Lage verhindern.The The invention relates to an auto-injector with a housing, one Injection needle, a container for an active ingredient that can be moved relative to the housing, one relative to the container sliding piston, with a relative to the housing between an extended Position and a retracted position movable needle guard and with locking means that move after using the auto-injector Prevent the needle guard from the extended position.
Autoinjektoren sind in vielen verschiedenen Ausführungen bekannt. Sie dienen zum Verabreichen von Injektionen, insbesondere durch den betreffenden Patienten selbst. Beim Gebrauch wird eine Injektionsnadel automatisch eingestochen, meistens mittels Federkraft, und anschliessend ein Wirkstoff eingespritzt. Es sind viele wieder verwendbare Autoinjektoren bekannt und auch solche, die nach dem Gebrauch teilweise oder ganz weggeworfen werden. Alle diesen Autoinjektoren sind bevorzugt mit einem Nadelschutz ausgerüstet, dessen Aufgabe primär darin besteht, Personen nach der Benutzung des Autoinjektors vor ungewollten Verletzungen durch die Injektionsnadel zu schützen. Ein Nebeneffekt des Nadelschutzes besteht zudem darin, dass dem Patienten der von vielen Leuten als unangenehm empfundene Anblick der Injektionsnadel erspart bleibt. Ein Nadelschutz der erwähnten Art ist in vielerlei Ausführungsarten bekannt. Das Dokument WO9714455 beschreibt einen Autoinjektor mit einer in einem Gehäuse verschiebbaren Nadelschutzhülse, die während der Injektion auf der Haut des Patienten anliegt und durch eine Feder so vorgespannt wird, dass sich die Nadelschutzhülse beim Zurückziehen des Autoinjektors relativ zu diesem nach vorne schiebt und die Injektionsnadel überdeckt. Zwischen dem Nadelschutz und dem Gehäuse wirksame Verriegelungsmittel sorgen dafür, dass die Nadelschutzhülse nicht wieder zurückgeschoben werden kann und es somit zu keiner ungewollten Verletzung durch die Injektionsnadel kommen kann.auto-injectors are known in many different versions. You serve for administering injections, in particular by the person concerned Patients themselves. When used, an injection needle becomes automatic stabbed, mostly by spring force, and then on Active ingredient injected. There are many reusable auto-injectors known and also those that partially or wholly after use to be thrown away. All of these auto-injectors are preferred with equipped with a needle guard, whose job is primarily in it exists, people after using the auto injector against unwanted Protect injuries from the injection needle. A side effect of needle protection is also that the patient is considered by many people to be unpleasant sight of the injection needle is spared. On Needle protection of the mentioned Type is in many types known. The document WO9714455 describes an auto-injector one in a case sliding needle cover, the while the injection is applied to the patient's skin and by a The spring is pretensioned so that the needle protection sleeve withdrawal of the auto-injector relative to this pushes forward and covers the injection needle. Effective locking means between the needle guard and the housing ensure, that the needle guard not pushed back can become and therefore no unwanted injury the injection needle can come.
Beim vorangehend beschriebenen, aus dem Stand der Technik bekannten Autoinjektor ist die Nadelschutzhülse anfänglich im Gehäuse und wird erst nach der Injektion beim Zurückziehen des Autoinjektors ausgefahren.At the A previously described auto-injector known from the prior art is the needle protection sleeve initially in the housing and only becomes after the injection when the auto injector is withdrawn extended.
Dem gegenüber liegt der Erfindung die Aufgabe zugrunde, einen Autoinjektor vorzuschlagen, bei dem die Nadelschutzhülse vor und nach dem Gebrauch des Autoinjektors die gleiche Position relativ zum Gehäuse einnehmen kann. Die Nadelschutzhülse soll also vor der Auslösung der Injektion in das Gehäuse geschoben werden können, jedoch soll dies nach der Benutzung des Autoinjektors nicht mehr möglich sein.the across from the invention is based on the object of proposing an auto-injector which the needle protection sleeve the same position before and after using the auto-injector relative to the housing can take. The needle protection sleeve So it should be before triggering injection into the housing can be pushed however, this should no longer be possible after using the auto-injector.
Diese Aufgabe wird gemäss der Erfindung dadurch gelöst, dass die Sperrmittel mindestens ein federelastisches Glied aufweisen, wobei in einer entspannten Lage des federelastischen Glieds der Nadelschutz verschiebbar ist und das federelastische Glied durch ein sich bei der Bewegung zum Einstechen der Injektionsnadel relativ zum Gehäuse bewegendes Element in eine gespannte Lage gebracht wird, in welcher das Verschieben des Nadelschutzes aus der ausgefahrenen Lage verhindert wird.This Task is according to solved the invention that the locking means have at least one resilient member, being in a relaxed position of the resilient member of the Needle guard is slidable and the spring-elastic member through a relative movement when inserting the injection needle to the housing moving element is brought into a tensioned position, in which prevents the needle guard from moving out of the extended position becomes.
Diese erfindungsgemässe Lösung ermöglicht es beispielsweise, die Bewegung des Zurückschiebens des Nadelschutzes vor der Injektion zu benutzen, um den Autoinjektor zu entsichern und so für die Injektion vorzubereiten. Nach erfolgter Injektion kann jedoch der Nadelschutz nicht wieder relativ zum Gehäuse hin verschoben werden.This invention solution allows it, for example, the movement of pushing back the needle guard before injection to unlock the auto-injector and so for them Prepare for injection. After the injection, however, the Do not move the needle guard relative to the housing again.
Nach einer Ausführungsart der Erfindung ist das Element, welches das federelastische Glied in eine gespannte Lage bringt, der Behälter oder ein Nadelträger für die Injektionsnadel. Diese unmittelbare Ausnützung der Bewegung eines oder beider dieser Teile erlaubt eine besonders einfache Konstruktion des Autoinjektors. Nach einer weiteren Ausführungsart enthalten die Sperrmittel einen Vorsprung, der im Nadelschutz angeordnet ist und mit dem das federelastische Glied in seiner gespannten Lage zusammenwirkt und das federelastische Glied ist als Federzunge ausgebildet. Diese Konstruktion ist besonders einfach und funktionssicher und lässt sich leicht aus Kunststoff im Spritzgiessverfahren realisieren. Wenn nach einer weiteren Ausführungsart mindestens zwei, vorzugsweise drei Federzungen vorhanden sind, wird die Funktionssicherheit des Autoinjektors weiter erhöht. Vorzugsweise ist der Nadelschutz durch Federmittel in Richtung auf seine ausgefahrene Lage vorgespannt. Nach einer anderen Ausführungsart ist eine Führungshülse im Ge häuse angeordnet, der Wirkstoffbehälter ist in der Führungshülse aufgenommen und der Nadelschutz ist in einem Raum zwischen dem Gehäuse und der Führungshülse verschiebbar. Diese Ausführungsart ist insbesondere hinsichtlich der Montage des Autoinjektors vorteilhaft. Auch die Führungshülse wird bevorzugt aus Kunststoff gefertigt, wobei nach einer weiteren Ausführungsart die Federzunge einstückig mit der Führungshülse ausgebildet ist. Wenn der Nadelschutz gemäss einer weiteren Ausführungsart hülsenförmig ausgebildet ist, ist er besonders einfach herzustellen und umhüllt die ausgefahrene Injektionsnadel vollständig.To an execution type the invention is the element that the resilient member brings the container or a needle carrier for the injection needle into a tense position. This immediate exploitation the movement of one or both of these parts allows one in particular simple construction of the auto-injector. According to another embodiment the locking means contain a projection which is arranged in the needle guard and with which the resilient member in its tensioned position cooperates and the resilient member is designed as a spring tongue. This construction is particularly simple and reliable and is easy made of plastic by injection molding. If after one another embodiment at least two, preferably three spring tongues are present the functional safety of the auto injector is further increased. Preferably is the needle guard by spring means towards its extended Biased position. According to another embodiment, a guide sleeve is arranged in the housing, the drug container is received in the guide sleeve and the needle guard is in a space between the housing and the guide sleeve slidable. This type of execution is particularly advantageous with regard to the assembly of the car injector. The guide sleeve will also preferably made of plastic, whereby according to a further embodiment the spring tongue in one piece with the guide sleeve is. If the needle guard according to another embodiment sleeve-shaped is, it is particularly easy to manufacture and envelops the fully extended injection needle.
Ein Ausführungsbeispiel der Erfindung wird nachstehend unter Bezugnahme auf die beiliegenden Zeichnungen beispielhaft erläutert. Es zeigtOn embodiment the invention will now be described with reference to the accompanying Drawings exemplified. It shows
In
einem im Wesentlichen zylindrischen Gehäuse
In
der Führungshülse
Beim
Gebrauch des Autoinjektors wird dieser mit einer Öffnung
Nachdem
die im Wirkstoffbehälter
An
Stelle des Innenflansches
- 11
- Gehäusecasing
- 22
-
Innenflansch
in
1 Inner flange in1 - 33
- Federfeather
- 44
- NadelschutzhülseNeedle guard
- 55
-
Öffnung in
4 Opening in4 - 66
-
Innenflansch
in
4 Inner flange in4 - 77
- Wirkstoffbehälterdrug container
- 88th
- Kolbenpiston
- 99
- Nadelträgerneedle carrier
- 1010
- Injektionsnadelinjection needle
- 1111
- Führungshülseguide sleeve
- 1212
-
Aussenflansch
an
11 Outer flange11 - 1313
- Federzungespring tongue
- 1414
-
Öffnung in
11 Opening in11 - 1515
- Nadeldichtungneedle seal
- 1616
-
Ausnehmung
in
11 Recess in11
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH20662003A CH696519A5 (en) | 2003-12-03 | 2003-12-03 | Automatic injection unit comprises at least one elastic element which during an injection is displaced so that entry of the needle protection sleeve after the injection into the housing is no longer possible |
CH2066/03 | 2003-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202004016791U1 true DE202004016791U1 (en) | 2004-12-30 |
Family
ID=33557714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200420016791 Expired - Lifetime DE202004016791U1 (en) | 2003-12-03 | 2004-10-29 | Automatic injection unit comprises at least one elastic element which during an injection is displaced so that entry of the needle protection sleeve after the injection into the housing is no longer possible |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH696519A5 (en) |
DE (1) | DE202004016791U1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006041809A1 (en) * | 2006-09-06 | 2008-03-27 | Tecpharma Licensing Ag | Needle protection device with blocking device |
DE102006041808A1 (en) | 2006-09-06 | 2008-03-27 | Tecpharma Licensing Ag | Needle protection device for injection device e.g. injection pen, has blocking units in blocking engagement with one another in protection position, and blocking needle protection against movement in releasing position |
DE102004060146B4 (en) * | 2003-12-18 | 2009-09-03 | Tecpharma Licensing Ag | Autoinjector with locking of the drug container |
US8734402B2 (en) | 2009-01-20 | 2014-05-27 | Future Injection Technologies Limited | Injection device |
US9526846B2 (en) | 2009-08-19 | 2016-12-27 | Safety Syringes, Inc. | Patient-contact activated needle stick safety device |
WO2017140962A1 (en) * | 2016-02-19 | 2017-08-24 | Nemera La Verpillere | Device for injecting a liquid product, having simplified assembly |
US10543322B2 (en) | 2015-01-22 | 2020-01-28 | Novo Nordisk A/S | Injection needle assembly for an injection device and an injection device comprising such assembly |
-
2003
- 2003-12-03 CH CH20662003A patent/CH696519A5/en not_active IP Right Cessation
-
2004
- 2004-10-29 DE DE200420016791 patent/DE202004016791U1/en not_active Expired - Lifetime
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11426529B2 (en) | 2003-12-18 | 2022-08-30 | Ypsomed Ag | Auto-injector with active agent container latching |
US10960143B2 (en) | 2003-12-18 | 2021-03-30 | Ypsomed Ag | Auto-injector with active agent container latching |
DE102004060146B4 (en) * | 2003-12-18 | 2009-09-03 | Tecpharma Licensing Ag | Autoinjector with locking of the drug container |
DE102004064159B4 (en) * | 2003-12-18 | 2020-08-13 | Tecpharma Licensing Ag | Auto-injector with locking of the drug container |
US10493213B2 (en) | 2003-12-18 | 2019-12-03 | Tecpharma Licensing Ag | Auto-injector with active agent container latching |
US10973988B2 (en) | 2003-12-18 | 2021-04-13 | Ypsomed Ag | Auto-injector with active agent container latching |
US8409149B2 (en) | 2003-12-18 | 2013-04-02 | Tecpharma Licensing Ag | Auto-injector with active agent container latching |
US9855392B2 (en) | 2003-12-18 | 2018-01-02 | Tecpharma Licensing Ag | Auto-injector with active agent container latching |
US8945049B2 (en) | 2003-12-18 | 2015-02-03 | Tecpharma Licensing Ag | Auto-injector with active agent container latching |
DE102004060146C5 (en) * | 2003-12-18 | 2015-12-31 | Tecpharma Licensing Ag | Autoinjector with locking of the drug container |
US9427528B2 (en) | 2003-12-18 | 2016-08-30 | Tecpharma Licensing Ag | Auto-injector with active agent container latching |
DE102006041809B4 (en) * | 2006-09-06 | 2012-11-15 | Tecpharma Licensing Ag | Needle protection device with blocking device |
DE102006041808B4 (en) | 2006-09-06 | 2018-04-05 | Tecpharma Licensing Ag | Needle protection device with releasably blocked needle guard |
US7850648B2 (en) | 2006-09-06 | 2010-12-14 | Tecpharma Licensing Ag | Needle protecting device comprising a lock |
DE102006041809A1 (en) * | 2006-09-06 | 2008-03-27 | Tecpharma Licensing Ag | Needle protection device with blocking device |
US7789863B2 (en) | 2006-09-06 | 2010-09-07 | Tecpharma Licensing Ag | Needle protecting device comprising a releaseably blocked needle protector |
DE102006041808A1 (en) | 2006-09-06 | 2008-03-27 | Tecpharma Licensing Ag | Needle protection device for injection device e.g. injection pen, has blocking units in blocking engagement with one another in protection position, and blocking needle protection against movement in releasing position |
US8734402B2 (en) | 2009-01-20 | 2014-05-27 | Future Injection Technologies Limited | Injection device |
US9526846B2 (en) | 2009-08-19 | 2016-12-27 | Safety Syringes, Inc. | Patient-contact activated needle stick safety device |
US11400234B2 (en) | 2009-08-19 | 2022-08-02 | Safety Syringes, Inc. | Patient-contact activated needle stick safety device |
US10314985B2 (en) | 2009-08-19 | 2019-06-11 | Safety Syringes, Inc. | Patient-contact activated needle stick safety device |
US10543322B2 (en) | 2015-01-22 | 2020-01-28 | Novo Nordisk A/S | Injection needle assembly for an injection device and an injection device comprising such assembly |
FR3047902A1 (en) * | 2016-02-19 | 2017-08-25 | Nemera La Verpilliere | DEVICE FOR INJECTING A LIQUID PRODUCT WITH SIMPLIFIED ASSEMBLY. |
WO2017140962A1 (en) * | 2016-02-19 | 2017-08-24 | Nemera La Verpillere | Device for injecting a liquid product, having simplified assembly |
Also Published As
Publication number | Publication date |
---|---|
CH696519A5 (en) | 2007-07-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20050203 |
|
R150 | Term of protection extended to 6 years |
Effective date: 20071030 |
|
R157 | Lapse of ip right after 6 years |
Effective date: 20110502 |