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US 10,207,051 B2Granted
Drug delivery device
AssigneeOval Medical Technologies Limited
InventorsValerio Lelio Cereda, Ralph George Lamble, Michael Charles Savill, Susanna Elizabeth McRobert White, Martyn James Young, Matthew Egerton Young, Jonathan Lawson
Life of this patent
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Abstract
There is provided drug delivery devices including a drug container assembly with a needle and automatic needle insertion and drug delivery mechanisms. Aspects of the devices described include a noise-generation mechanism to indicate the completion of drug delivery, a mechanism for triggering drug delivery following needle insertion, front-end activation of the device and a safety mechanism for covering the needle after use and methods of assembly of the devices.
Claims21
A drug delivery device comprising:
- a drug container containing a drug;
- a plunger within the drug container, movement of the plunger within the drug container being operative to deliver the drug from the drug container;
- and
- a drive mechanism, the drive mechanism comprising:
- a stored energy source, the stored energy source configured to release energy by expanding from a compressed state, a first drive element coupled to the stored energy source, and a second drive element coupled to the first drive element and positioned between the first drive element and the plunger, wherein in a first position of the drive mechanism the first drive element is constrained from moving in an axial direction relative to the second drive element but in a second position of the drive mechanism the first drive element is free to move in the axial direction relative to the second drive element such that a first surface of the first drive element is driven against a first surface of the second drive element by the stored energy source to produce an audible signal indicative of completion of drug delivery from the drug container.
2 more elements
A drug delivery device comprising:
- a drug container containing a drug;
- a plunger within the drug container, movement of the plunger within the drug container being operative to deliver the drug from the drug container;
- and
- a drive mechanism, the drive mechanism comprising:
- a stored energy source, the stored energy source configured to release energy by expanding from a compressed state, a first drive element coupled to the stored energy source, and a second drive element coupled to the first drive element and positioned between the first drive element and the plunger, wherein in a first position of the drive mechanism, the first drive element is constrained from moving in an axial direction relative to the second drive element but in a second position of the drive mechanism, the first drive element is free to move in the axial direction relative to the second drive element such that a first surface of the first drive element is driven against a first surface of the second drive element by the stored energy source to produce an audible signal indicative of completion of drug delivery from the drug container, and
- wherein the drive mechanism comprises a third drive element, wherein the third drive element is configured to engage the drug container or a portion of a housing of the drug delivery device as the drive mechanism moves to the second position, and
- wherein the first drive element comprises a first bearing surface and wherein the second drive element comprises a second bearing surface engaging the first bearing surface in the first position of the drive mechanism, wherein rotation of the first drive element relative to the second drive element moves the first bearing surface off the second bearing surface, allowing the first surface of the first drive element to strike the first surface of the second drive element, wherein in the first position of the drive mechanism, the third drive element constrains relative rotation between the first drive element and the second drive element and in the second position, the third drive element is moved axially relative to the first and second drive elements to a position in which the third drive element does not constrain relative rotation between the first drive element and the second drive element.
4 more elements
Dependencies are inferred from the claim text.