Abstract:
Beschrieben wird eine Ausschütteinrichtung zur Verabreichung eines fluiden Produktes, die Ausschütteinrichtung umfassend eine Längsachse, ein Gehäuse mit einem Mechanikhalter, welcher fest mit dem Gehäuse verbunden ist, wo-bei der Mechanikhalter auf einer inneren Oberfläche über mindestens eine Längsführung verfügt, eine Auslösevorrichtung, einen Produktbehälter, insbesondere in der Form einer vorbefüllten Spritze oder Karpule, welcher zumindest axial fest in einem Teil des Gehäuses angeordnet ist, wobei im Produktbehälter ein axial verschiebbarer Stopfen angeordnet ist, durch dessen Verschiebung in distale Richtung Produkt aus dem Produktbehälter ausgeschüttet werden kann, eine Triebfeder, in welcher Energie für das automatische Ausschütten von Produkt gespeichert werden kann, wobei die Triebfeder operativ mit der Auslösevorrichturig verbunden ist, und wobei ein erstes Ende der Triebfeder mit dem Gehäuse verbunden ist, eine koaxial zur Längsachse angeordnete Gewindestange, welche drehfest mit einem zweiten Ende der Triebfeder verbunden ist, eine koaxial zur Längsachse angeordnete zwei- oder mehrteilige Kolbenstange mit mindestens einer äusseren Kolbenstange, welche die Form einer Hülse hat, welche auf ihrer Ausssenfläche mindestens ein erstes Führungselement aufweist, das in Eingriff mit der mindestens einen Längsführung des Mechanikhalters ist und wobei die äussere Kolbenstange mit dem Stopfen des Produktbehälters so Wechsel wirken kann, dass bei einer Verschiebung der äusseren Kolbenstange in distale Richtung auch der Stopfen in distale Richtung verschoben werden kann, die zwei- oder mehrteilige Kolbenstange weiter mit mindestens einer inneren Kolbenstange, welche zumindest teilweise im Inneren der äusseren Kolbenstange gelagert ist, wobei die innere Kolbenstange an ihrem proximalen Ende, welches über das proximale Ende der äusseren Kolbenstange hinaus ragt, mindestens ein zweites Führungselement aufweist, welches in Eingriff mit der mindestens einen Längsführung des Mechanikhalters sein kann, und wobei die innere Kolbenstange über eine Gewindeverbindung mit der Gewindestange verbunden ist, wobei die äussere und innere Kolbenstange zusammen eine Kavität mit einem inneren Volumen definieren, welches zumindest teilweise mit einem viskosen Fluid befüllt ist, so dass insbesondere bei einer relativen Drehung zwischen innerer und äusserer Kolbenstange das viskose Fluid einen Bewegungswiderstand ausbildet, wobei die innere Kolbenstange an ihrem proximalen Ende mindestens eine radiale Richtung ragende Freigabestruktur aufweist, insbesondere mindestens eine Vertiefung, welche abhängig von ihrer Orientierung zur Längsachse eine freizugebende Struktur freigeben kann.
Abstract:
An injection device, method, and system for drug delivery includes a container for storing a drug, the container having a stopper movably disposed in the container for expelling the drug; an injection drive mechanism having a plunger for acting on the stopper and an energy source having a first selected potential energy for exerting a force on the plunger to cause the plunger to act on the stopper to expel the drug; and a plunger loading mechanism for substantially preventing the plunger from accelerating to a predetermined velocity before it acts on the stopper. The plunger loading mechanism may be a spring having a second selected potential energy for reducing or eliminating a distance between the plunger and the stopper, prior to the plunger accelerating to the velocity. The second selected potential energy of the spring may be less than the first selected potential energy of the energy source.
Abstract:
Autoinjecteur comportant un corps (1; 2), un réservoir (S) contenant du produit fluide et comportant un piston (P) et une aiguille (A), tel qu'une seringue pré-remplie, ledit autoinjecteur comportant une tige de piston (5) adaptée à coopérer avec le piston (P) dudit réservoir (S), ladite tige de piston (5) étant déplaçable entre une première position de repos, une seconde position de piquage, dans laquelle ladite tige de piston (5) a déplacé ledit réservoir (S) par rapport audit corps (1; 2) pour réaliser le piquage, et une troisième position d'injection dans laquelle ladite tige de piston (5) a déplacé le piston (P) du réservoir (S) pour injecter le produit fluide à travers l'aiguille (A), un ressort d'actionnement (6) étant prévu pour solliciter ladite tige de piston (5) d'abord vers sa position de piquage puis vers sa position d'injection, l'autoinjecteur comprenant un système de réglage de force (7, 8) exerçant une force (F1, F2) sur ladite tige de piston (5), ladite force (F1) étant opposée à la force exercée par ledit ressort d'actionnement (6) sur ladite tige de piston (5) en fin de piquage pour diminuer la force exercée sur ledit réservoir (S) par ladite tige de piston (5) en fin de piquage, et ladite force (F2) s'ajoutant à la force exercée par ledit ressort d'actionnement (6) sur ladite tige de piston (5) en début d'injection pour amplifier la force exercée sur ledit piston (P) par ladite tige de piston (5) en début d'injection.
Abstract:
The present invention relates to a pen type drug delivery device having a dose setting limiter mechanism. The mechanism comprises a housing (10, 30, 40; 40'), a dose setting member (50), which during dose setting rotates relative to the housing (10, 30, 40; 40') in a first direction and which during dose dispensing rotates relative to the housing (10, 30, 40; 40') in a second opposite direction, and a limiting element (60) limiting the rotational movement of the dose setting member between a zero dose position and a maximum dose position. The limiting element (60) is rotationally constrained but axially displaceable relative to one of the housing (10, 30, 40; 40') or the dose setting member (50) and is movable helically (53) relative to the other of the housing (10, 30, 40; 40') or the dose setting member (50). These movements have end stops (54, 55) limiting the relative movement of the limiting element (60) and thus the dose setting member.
Abstract:
본 발명의 주사기의 음압 및 양압 발생 보조장치는 바늘이 결합된 선단부와, 상기 선단부와 결합되고 내부에 공간이 마련되며 상기 공간의 개구된 단부에 제1플랜지가 형성된 실린더와, 상기 공간에 결합된 피스톤과 연결되어 단부에 제2플랜지가 형성된 로드바를 손가락으로 밀거나 잡아당겨 연동하는 피스톤에 의해 공간의 압력을 변화시켜 발생하는 양압 또는 음압을 통해 바늘을 거쳐 약물을 투입하거나 추출하는 압력수단으로 구성된 주사기에 있어서, 상기 실린더 외부에 수평으로 배치되어 일단이 실린더의 제1플랜지 및 로드바의 제2플랜지 중 어느 한 개소에 고정되어 손가락의 조작을 통해 바가 직진 이동되는 방향으로 로드바를 연동시켜 공간의 압력을 발생 및 가변시키도록 구성된다.
Abstract:
Flush syringe assemblies (100) capable of creating pulsatile movement of the plunger rod (130) as it moves in the distal direction within a syringe barrel (110), while preventing overpressurization of the cathether are provided. An exemplary flush syringe assembly includes a syringe barrel with a first pulsing element (126) and a chamber (115) with flush solution, a plunger rod with a stopper (160) and a second pulsing element (136) that interacts with the first pulsing element to provide an engagement force that causes pulsatile movement of the plunger rod and a thumb press (170) slidably attached to the plunger rod with a pulse control element (190). The pulse control element is compressible to create a compression force that is greater than the engagement force of the first pulsing element and the second pulsing element.
Abstract:
The present invention relates to an injection device (1) comprising: - a container (5) receiving a product, and provided with an injection needle (6), - a housing (9, 11) receiving said container, said container being movable relative to said housing between an initial position, an insertion position, and a final position, - retaining means (12, 15), for maintaining said container in said insertion position, - deactivating means (20), for releasing said retaining means, said device being characterized in that it comprises : - temporizing means (19, 26, 27), for controlling the release of said retaining means until substantially all of the product contained within said container has passed through said injection needle before said container moves to said final position, and - a needle shield (2) coupled with said housing (9, 11) removal of said needle shield being with limited or no rotation of said needle shield. The invention also concerns a kit comprising such a device.
Abstract:
An injection device for use with a syringe (30) having a bore (32) extending from an end surface (34), a needle (36) communicating with the bore through the end surface and a dispensing piston (38) movable in said bore towards said end surface so as to expel the content of the syringe through the needle, the injection device including a housing (60) having an opening (64) at one end through which the needle may extend, a resilient member for biassing the syringe and needle inwardly of the housing, a drive element (66) movable towards said one end so as to move the needle of the syringe out of the opening against the bias of the resilient member and to move the dispensing piston of the syringe towards the end surface, a delatch mechanism (72) operable to release the syringe such that the needle moves inwardly of the housing, a drive coupling (40) for extending from said drive element to the dispensing piston of the syringe so as to transfer movement of said drive element to the dispensing piston, wherein the drive coupling gradually reduces in length such that, after the drive element has moved the dispensing piston to the end surface, the drive element continues to move to said predetermined piston to the end surface, the drive element continuous to move to said predetermined position at which said delatch mechanism releases the syringe.
Abstract:
A medical injection device (10) is provided which includes a shield system (14) and a syringe (12) which may be coupled to the shield system. The shield system includes a syringe holder (26), a shield (28) telescopically received in the holder and slidably coupled to the holder and an end fitting (32) which isolates the syringe flange from the holder, preventing damage to the flange. A spring (30) resiliently urges the shield from a retracted position to an extended position. Stop members are provided adjacent the distal end of the holder and the proximal end of the shield for maintaining the shield in the retracted position. Axial movement of the syringe with respect to the holder causes disengagement of the stop members, allowing the spring to move the shield to the extended position. Detents (52) are provided on the holder for maintaining the shield in the extended position.