Rotatable end of dose feedback mechanism

A dose and rotating tower technology, applied in the direction of medicine equipment, infusion sets, other medical equipment, etc., can solve the problems of plunger driving parts movement, complexity and error indication
CN106456902AInactive Publication Date: 2017-02-22ELI LILLY & CO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ELI LILLY & CO
Publication Date
2017-02-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

An injection device for injecting a medicament includes a housing, a dose setting member (20) movable to set a dose to be injected, and a signal part (7). The signal part rotates from a first rotational position to a second rotational position to increase loading on a spring or spring arm when a dose is set due to rotation of the dose setting member. An internal pressure builds up in the injection device during injection which results in the signal part being captured in the second rotational position between first and second internal parts of the injection device. After the internal pressure dissipates by a sufficient amount during injection, the signal part rotates under the urging of the loaded spring from the second rotational position back to the first rotational position. A portion of the signal part moves into contact with a surface when the signal part reaches the first rotational position to produce tactile or audible feedback indicating that an end of dose condition has been reached.
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Description

[0001] Cross References to Related Applications

[0002] This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Application No. 62 / 008,559, filed June 6, 2014 and incorporated herein by reference. technical field

[0003] The present invention relates to an injection device, eg for manual or spring actuated injection, having an audible signal or a tactile signal or both to indicate when a dose is considered complete and when the injection may be terminated. Background technique

[0004] Most injection devices on the market today that are capable of setting doses of various sizes visually count down to zero on the display device during injection. This allows the user to track the progress of the injection and determine when the mechanical components have reached their initial zero position. When the zero position has been reached, it is recommended that the user wait 5-6 seconds to allow the pressure that has built up in the device during injection to e...

Claims

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