Patent Application
20160166759
The invention relates to a needle storage device comprising a plurality of needle storage compartments for used and/or unused needles of a drug delivery device.
Patients suffering from diseases like diabetes have to frequently self-administer injections. Drug delivery devices like auto-injectors or pen injectors have been developed to facilitate self-administering injections. Typically, such drug delivery devices are re-usable and refitted with sterile injection needle assemblies to minimize the risk of infections.
Portable needle storage devices like needle magazines or needle dispensers contain a plurality of such sterile injection needle assemblies that are adapted to be mounted to the drug delivery devices. The needle storage devices supplement the drug delivery devices to facilitate safe self-administration of the medicament. Additionally, the needle storage device may be used as a disposal container for used injection needles to reduce the risk of accidental needle stick injuries caused by contaminated injection needles.
It is an object of the present invention to provide a needle storage device with an improved, in particular safe storage of used needles in the needle storage device.
The object is achieved by a needle storage device according to claim 1.
Exemplary embodiments of the invention are given in the dependent claims.
In an exemplary embodiment, a needle storage device according to the present invention comprises a housing having an opening adapted to receive a needle of a drug delivery device, needle storage compartments moveably disposed within the housing, and an indicator pivotably disposed within the housing and adapted to activate an acoustic and/or tactile feedback when a needle of a drug delivery device is stored in one of the needle storage compartments which is aligned with the opening.
In an exemplary embodiment, the indicator comprises a base plate pivotably mounted to the housing about a pivotal axis. In the area of the opening a fin is provided and adapted to serve as a stop for the base plate in an initial state.
In an exemplary embodiment, the needle storage device further comprises a spring is arranged between the indicator and the housing. The spring is arranged on the pivotal axis of the indicator. The spring is adapted to be tensioned between the indicator and the housing during insertion of the drug delivery device by pivoting of the indicator with respect to the housing. The spring is formed as a leg spring. The base plate and the housing are moveable relative to each other by a slot-pin guidance.
In an exemplary embodiment, the needle storage device further comprises an indicator arm is provided which is flexible and guided on a crank formed by an inner surface of the housing. The crank comprises at least one ramp on which the indicator arm is guided and prestressed during insertion of the drug delivery device with its needle pointing into the opening as well as into the aligned needle storage compartment. After storage of the needle and removal of the drug delivery device without the needle the indicator arm slides over the ramp of the crank and activates the acoustic and/or tactile feedback.
In an exemplary embodiment, the housing comprises an outer shape and/or sections with a substantially circular, semicircular, oval or elliptic shape.
In an exemplary embodiment, the needle storage device further comprises a door provided for allowing access to the opening.
In an exemplary embodiment, the needle storage device further comprises a drive and conveyor chain adapted to deliver the needle storage compartments within the housing such that at least one of the needle storage compartments is aligned with the opening.
The invention allows that the user knows when the drug delivery device can be removed from the needle storage device. Due to the acoustic and/or tactile feedback of the indicator integrated into the needle storage device, the user knows if the needle of the drug delivery device is detached in the needle storage compartment which is aligned with the opening of the needle storage device. Furthermore, in a case of a needle storage device with a chain of needle storage compartments it is not possible to insert the needle back again into the needle storage compartment after removing the needle because an automatic mechanism is provided that allows to move “used” needle storage compartments.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:
Corresponding parts are marked with the same reference symbols in all figures.
The needle storage device 1 comprises a substantially cylindrical housing 4 with a low profile and having a lateral wall 4.1 that has a section of substantially semi-circular shape. An opening 5 is formed into the lateral wall 4.1 that provides access to one of the needle storage compartments 2 aligned with the opening 5.
A door 6 arranged as a slider may be positioned in an open position (not shown) and in a closed position C to respectively provide and block access to the opening 5. The door 6 comprises a door handle 6.1 that is manually slid to move the door 6 between the open position and the closed position C.
The needle storage device 1 is used as a container for the needles 3 adapted to be mounted to a distal end of a drug delivery device, e.g. an auto-injector or a pen injector. The distal end of the drug delivery device is inserted into the opening 5 to attach the needle 3 and/or a needle assembly comprising a needle hub with a needle to the drug delivery device. In particular, a needle hub (not shown) affixed to the needle 3 is adapted to be mounted to the distal end of the drug delivery device upon insertion thereof into the opening 5 of the needle storage device 1.
The needle 3 retained in the needle storage compartment 2 may in particular be arranged as a double pointed needle having a pointed proximal tip. The drug delivery device may contain a medical ampoule containing a liquid medicament. Upon mounting of the needle 3 to the drug delivery device, the proximal tip of the needle 3 pierces a septum sealing the medical ampoule to establish fluid communication.
The needle storage device 1 comprises additionally an actuation element 7 that is adapted to be manually actuated to activate a drive and conveyor chain 8 for conveying the needle storage compartments 2 within the housing 4 in a manner that one of the needle storage compartments 2 is accessible through the opening 5. The needle storage device 1 acts both as a dispenser for sterile unused injection needles 3 and as a disposal device for used injection needles 3. After an injection has been performed, the used injection needle 3 is reinserted into the needle storage compartment 2 for safe disposal.
The actuation element 7 is arranged as a dial wheel that may be turned to activate the drive and conveyor chain 8 so as to deliver the needle storage compartments 2 within the housing 4. Manual activation of the actuation element 7 causes the drive and conveyor chain 8 to forward the needle storage compartments 2, e.g. disposed in a chain, by a defined step distance so that one of needle storage compartments 2 is properly aligned with the opening 5 disposed in the housing 4.
Alternatively, the actuation element 7 may be designed as a roller rotatably mounted with respect to the housing 4. The roller may cover a substantial height of the lateral wall 4.1 of the housing 4.
The housing 4 may comprise different outer shapes and storage sections with substantially circular, semicircular, oval or elliptic outer shapes and storage sections.
Each needle storage device 1, 1′ and 1″ comprises a touch element 9 capable of indicating if a needle 3 which is inserted into the needle storage compartment 2 aligned with the opening 5 is safely fixed and thus stored in that needle storage compartment 2. The touch element 9 is for example coloured or its surface is structured so that a user knows where he has to put his hands to feel a tactile feedback from an integrated indicator 10 which is shown in
The indicator 10 is pivotably disposed within the housing 4 and adapted to activate an acoustic and/or tactile feedback when a needle 3 of a drug delivery device is stored in one of the needle storage compartments 2 which is aligned with the opening 5.
In an exemplary embodiment, the indicator 10 comprises a base plate 11 pivotably mounted to the housing 4 about a pivotal axis D. The base plate 11 is formed as a profile, e.g. as an L-profile or a bent arm, and made of or comprising plastic or metal. About the pivotal axis D, the base plate 11 comprises an enlarged surface 11.1 with a hole through which the pivotal axis D is arranged.
The base plate 11 is pivotably movable as indicated by arrow P1 with respect to the housing 4 between an initial position shown in
For an automatic reset of the base plate 11 from the storage position into the initial position after the drug delivery device is removed from the opening 5, a spring 13 is arranged between the indicator 10, in particular a first stop 14 on the indicator 10, and a second stop 15 on the housing 4.
In a possible embodiment, the spring 13 is formed as a leg spring and arranged on the pivotal axis D of the indicator 10 as it is shown in
To support the movement of the indicator 10 relative to the housing 4 between the initial position and the storage position, a slot-pin guidance 16 is provided. In the shown embodiment, the indicator 10 comprises a slot 16.1 and a corresponding pin 16.2 protrudes from the inner surface of the housing 4. In a not shown embodiment, the housing may comprise a slot and the indicator may comprise a corresponding pin.
Further, in the area of the opening 5 of the needle storage device 1 a fin 12 is provided and adapted to serve as an end stop for the base plate 11, in particular of an edge 11.2 of the base plate 11 in the initial state in which no drug delivery device is inserted in the opening 5. An end of the fin 12 towards the edge 11.2 comprises a curved contour or is formed as a hook.
Furthermore, the indicator 10 comprises an indicator arm 17 and a crank 18 on which the indicator arm 17 is guided during the movement of the indicator 10 between its initial and storage positions.
During operation of the needle storage device 1, e.g. during removal and attachment of an unused needle 3 to a drug delivery device or during detachment and storage of a used needle 3 into the drug delivery device, the drug delivery device is inserted into the opening 5 causing that the fin 12 pushes and moves the indicator 10, in particular the base plate 11 from the initial position (shown in
In particular, the indicator 10 is pivotably moved about the pivotal axis D. Due to the movement of the indicator 10, the spring 13 is adapted to be tensioned between the indicator 10 and the housing 4, in particular between the first and second stops 14 and 15. Further, the indicator arm 17, in particular at least its flexible end is guided at least on a ramp of the crank 18 such that the indicator arm 17 is pre-stressed.
As it is shown as an example, the indicator arm 17 is guided over the crank 18, in particular a structural surface with ramps and edges, in a given way according to guiding arrows S1 to S4 during the whole movement of the drug delivery device into and out off the opening 5 of the needle storage device 1. The crank 18 may have different shapes with different ramps and edges. In an example, the crank 18 is formed by an inner surface of the housing 4.
At the highest level or height of the crank 18 and for example when the drug delivery device with its needle 3 pointing into the opening 5 and thus into the aligned needle storage compartment 2 in both direction, in particular into or out off the needle storage device 1, the indicator arm 17 is tensioned to its maximum. In this position, there is no sideways guidance on the crank 18 so that the indicator arm 17 jumps upwards and thereby relaxes and thus activates an acoustic as well as a tactile feedback in the area of the touch element 9 in the outer surface of the housing 4.
In other words, after removing of the drug delivery device without a used needle by screwing off the needle connection, e.g. thread or bayonet connection, the indicator 10 gains height opposite to the direction of arrow P2 compared to the housing 4 and the needle storage device 1. In this position in which the needle connection is opened the flexible indicator arm 17 slips over the crank 18 and activates the acoustic and tactile feedback. Now, the user of the device knows that he can remove the drug delivery device from the needle storage device 1.
In an exemplary embodiment the touch element 9 is arranged in the surface of the housing 4 in that area which lies above of the indicator 10, in particular above the indicator arm 17.
During removal of the drug delivery device from the needle storage device 1, the indicator 10 follows this movement until its edge 11.2 is stopped by the fin 12 thereby the spring 13 is relaxed.
Due to the acoustic and/or tactile feedback of the indicator 10 integrated in the needle storage device 1, the user knows if the needle 3 of the drug delivery device is detached in the needle storage compartment 2 which is aligned with the opening 5 of the needle storage device 1. Furthermore, in a case of a needle storage device 1 with a chain of needle storage compartments 2 it is not possible to insert the needle back again into the needle storage compartment after removing the needle because an automatic mechanism is provided that allows to move “used” or “occupied” needle storage compartments.
In an exemplary embodiment the needle storage device 1, 1′, 1″ and/or the spring 13 may comprise or consist of at least one material with a flexible behaviour (high strained) combined with sufficient strength. Such materials may for example be spring steel sheet or semi-crystalline materials, e.g. Polyamide, Polyoxymethylene, Polybutylene terephthalate, Polyethylene or Polypropylene or a thermoplastic elastomer. Spring steel sheet is particularly suitable for providing the acoustic feedback.
Those of skill in the art will understand that modifications (additions and/or removals) of various components of the apparatuses, methods and/or systems and embodiments described herein may be made without departing from the full scope and spirit of the present invention, which encompass such modifications and any and all equivalents thereof.
| Number | Date | Country | Kind |
|---|---|---|---|
| 13177490.3 | Jul 2013 | EP | regional |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2014/065420 | 7/17/2014 | WO | 00 |
