Upgrade to enjoy subscriber-only features like email alerts and data export. See the Plans and Pricing

Serving hundreds of leading biopharmaceutical companies globally:

Farmers Insurance
Chinese Patent Office
Harvard Business School
Baxter
Medtronic
QuintilesIMS
Cipla
Cerilliant
Fuji

Generated: August 14, 2018

DrugPatentWatch Database Preview

Details for Patent: 9,861,757

« Back to Dashboard

Title:Injection device with an end of dose feedback mechanism
Abstract: An injection device with a dose delivering mechanism being adapted to provide a non-visual, e.g. audible and/or tactile, feedback signal when a set dose has been at least substantially injected. A first and a second part of the injection device are adapted to perform a relative rotational movement with respect to each other. The relative rotational movement causes at least two parts of the injection device to abut or engage, and this abutment or engagement causes the non-visual feedback signal to be generated. A very distinct and precise feedback is provided as compared to prior art axial solutions because the generation of the feedback signal is initiated by the relative rotational movement. Feedback signal may be generated by a change in a rotational velocity of at least one part, e.g. by changing the pitch of a threaded portion or by engaging a non-rotating part and a rotating part, thereby causing the non-rotating part to start rotating. May alternatively be generated by building up and releasing a tension. The injection device is suitable for injecting insulin.
Inventor(s): Moller; Claus Schmidt (Fredensborg, DK), Radmer; Bo (Hilleroed, DK), Nielsen; Lars Ulrik (Virum, DK), Enggaard; Christian Peter (Vejby, DK)
Assignee: Novo Nordisk A/S (Bagsvaerd, DK)
Filing Date:Aug 19, 2016
Application Number:15/241,566
Claims:1. An injection device comprising: a housing having a longitudinal axis, a dose setting member being operable to set a desired dose to be injected, a piston rod being adapted to cooperate with a piston so as to cause a set dose to be injected from an ampoule, and a dose delivering mechanism being adapted to operate the piston rod in such a way that a set dose is injected by a mechanically biased mechanism comprising at least one spring, the dose delivering mechanism further being adapted to provide a tactile feedback signal to a user only at the end of injection of a set dose, wherein first and second parts of the injection device are adapted to perform a relative rotational movement around a longitudinal axis with respect to each other during injection of a dose, and wherein said relative rotational movement causes at least two parts of the injection device to abut or engage, said abutment or engagement causing the tactile feedback signal to be generated.

2. An injection device according to claim 1, wherein the tactile feedback signal comprises an audible signal.

3. An injection device according to claim 1, wherein the tactile feedback signal comprises a tactile signal.

4. An injection device according to claim 1, wherein the abutment or engagement is caused by a change in a rotational velocity of at least one part of the dose delivering mechanism.

5. An injection device according to claim 4, further comprising a ratchet operating the piston rod and having a threaded portion being adapted to engage with a part of the dose delivering mechanism, and wherein the change in a rotational velocity is generated by a change in the pitch of the threaded portion of the ratchet, said change in the pitch in return causing a change in a translational velocity of said part of the dose delivering mechanism, said change in translational velocity causing at least two parts of the injection device to abut, thereby causing the tactile feedback signal to be generated.

6. An injection device according to claim 4, wherein the dose delivering mechanism comprises a first dose part and a second dose part, the first dose part being adapted to rotate relatively to the housing during injection of a dose and the first dose part comprising structure for engaging the second dose part at the end of injection of a set dose, thereby causing the second dose part to rotate along with the first dose part, and wherein the tactile feedback signal is generated by the resulting rotational movement of the second dose part.

7. An injection device according to claim 6, wherein the second dose part is positioned between the first dose part and the housing.

8. An injection device according to claim 1, wherein the tactile feedback signal is generated as a result of an abutment between two parts of the dose delivering mechanism performing a relative rotational movement.

9. An injection device according to claim 8, wherein the tactile feedback signal is generated by a tensed part whereby the tactile feedback signal is provided by releasing a tension which has previously been introduced in a part of the injection device, the release of the tension being caused by the abutment between the two parts.

10. An injection device according to claim 9, wherein the tensed part comprises a spring structure.

11. An injection device according to claim 9, wherein the tension is introduced during dose setting.

12. An injection device according to claim 9, wherein the tension is introduced during injection of a dose.

For more information try a trial or see the plans and pricing

Serving hundreds of leading biopharmaceutical companies globally:

Chubb
Argus Health
Cantor Fitzgerald
Fish and Richardson
Julphar
Daiichi Sankyo
Merck
Teva
Johnson and Johnson

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.