Abstract:
L'invention porte sur une seringue (1) comprenant un corps (2) délimitant une chambre (C), un piston (3) apte à coulisser dans la chambre du corps le long d'un axe longitudinal (X1) de la seringue, un dispositif de retenue (4) déformable, configuré pour empêcher le piston de sortir entièrement du corps. Le piston comporte une tige (31), une tête (33) et un appuie-doigt (32) qui sont en une seule et même pièce. Le dispositif de retenue est monté en force dans la chambre et s'étend autour du piston sur un secteur angulaire strictement supérieur à 180° quand il est en position assemblée. De plus, ce dispositif de retenue comporte des nervures externes (46), qui s'étendent en saillie parallèlement à l'axe longitudinal (X1) et qui sont déformables plastiquement lors de l'assemblage du dispositif de retenue dans la chambre. L'invention porte également sur un procédé d'assemblage de cette seringue.
Abstract:
An injection device se curable to the body of a user for the automatic administration of a substance, including a housing (1), a reservoir for the substance, a piston (6) slide able relative to the reservoir to expel substance from the reservoir, a holder (2) to accommodate the reservoir, the holder lovably coupled to the housing, a annular extending from the injection device, a drive mechanism to force substance from the reservoir into the annular to administer the substance, a triggering mechanism including a release element (4) and a control device (8) coupled to the triggering mechanism and the drive mechanism, wherein the control device is movable relative to the housing.
Abstract:
An injection device se curable to the body of a user for the automatic administration of a substance, including a housing, a reservoir for the substance, a piston slide able relative to the reservoir to expel substance from the reservoir, a holder to accommodate the reservoir, the holder lovably coupled to the housing, a annular extending from the injection device, a drive mechanism to force substance from the reservoir into the annular to administer the substance, a triggering mechanism including a release element and a control device coupled to the triggering mechanism and the drive mechanism, wherein the control device is movable relative to the housing, wherein by activating the triggering mechanism by moving the release element, the control device is moved from a first position to a second position thereby releasing the drive mechanism, wherein upon completion of administering the substance the control device is moved from the second to a third position and an acoustic signal is produced upon reaching the third position, and wherein the movements of the control device are opposite the direction of the movement of the piston during administration.
Abstract:
The invention relates to an auto-injector (1) for administering a dose of a liquid medicament (M), comprising: an elongate housing (2) arranged to contain a syringe (3) with a hollow needle (4) and a stopper (6) for sealing the syringe (3) and displacing the medicament (M), the housing (2) having a distal end (D) and a proximal end (P) with an orifice intended to be applied against an injection site, wherein the syringe (3) is slidably arranged with respect to the housing (2), spring means (8) capable of, upon activation: - pushing the needle (4) from a covered position inside the housing (2) into an advanced position through the orifice and past the proximal end (P), operating the syringe (3) to supply the dose of medicament (M), and retracting the syringe (3) with the needle (4) into the covered position after delivering the medicament (M), activating means (20) arranged to lock the spring means (8) in a pressurized state prior to manual operation and capable of, upon manual operation, releasing the spring means (8) for injection. The spring means (8) is a single drive spring (8) arranged to be grounded at a distal end (8.1) in the housing (2) for advancing the needle (4) and for injecting the dose of medicament (M) via a plunger (9) and wherein the drive spring (8) is arranged to have its ground in the housing (2) switched to its proximal end (8.2) for retracting the syringe (3). A damper (28) is arranged around the plunger (9), wherein the damper (28) is arranged with the plunger (9) by a spline (29) so as to cause rotation of either the plunger (9) or the damper (28) at least during part of a translation of the plunger (9) in proximal direction (P) and share the load of the drive spring (8) between the translation and the rotation.
Abstract:
A drive assembly (3) for a medication delivery device (1) is provided which is switchable from an operational state to a resetting state and which comprises: -a housing (13) having a proximal end (8) and a distal end (15), -a drive member (20) adapted to be rotated with respect to the housing (13), and -a stop member (26) adapted to prevent rotational movement of the drive member (20) in a first direction with respect to the housing (13) and to permit rotational movement of the drive member (20) in a second direction with respect to the housing (13), the second direction being opposite to the first direction. In the operational state of the drive assembly (3) the stop member (26) is held in engagement with the drive member (20), and for switching into the resetting state of the drive assembly (3) the stop member (26) is enabled to disengage from the drive member (20) caused by gravity due to the weight of the stop member (26). Moreover, in the operational state of the drive assembly (3) the drive member (20) may beheld in engagement with a rotation member (21), and for switching into the resetting state of the drive assembly (3) the drive member (20) may be enabled to disengage from the rotation member (21) caused by gravity due to the weight of the drive member (20).
Abstract:
An injection device comprises a multi-use drive assembly (10) and a single use disposable syringe assembly (12) releasably connected thereto. The syringe assembly comprises a syringe (18) and a shield (26) mounted for telescopic movement. The drive assembly (10) is operable to extend the syringe (18) relative to the shield (26) and then to express a dose. Continued forward drive movement extends the shield (26) to re-cover the syringe needle (22) and then ejects the spent syringe assembly (12) in a safe (shrouded) condition.
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:
Described are devices and systems for protection of injectable substances such as adipose cells from excessive stress or pressure during injection procedures. Further described are stress control mechanisms for detecting and/or controlling stress or pressure within injection devices.
Abstract:
A device for administering a liquid product, comprising a piston rod which can perform an idle stroke relative to a piston and, at the end of the idle stroke, slave the piston for a product delivery, wherein a braking means, in particular a damping means, brakes or damps the movement of the piston rod during the idle stroke.
Abstract:
There is provided an auto-injector for a syringe that is suitable for use in the injected delivery of drug to a patient. The auto-injector comprises a housing defining a housing cavity and a needle delivery aperture, the housing cavity arranged for receipt of a syringe. The syringe is movable within the housing cavity from a rest position, in which the needle tip thereof is within the housing to a use position, in which the needle tip protrudes from the needle delivery aperture. The auto-injector further comprises a drive transfer element for transferring axial drive; and a first coupling for coupling said drive transfer element to said syringe barrel of the syringe. The drive transfer element communicates with said plunger of the syringe for transferring axial drive thereto. The first coupling is a friction clutch coupling arranged for decoupling by declutching thereof when the syringe moves to the use position.