Disposable infusion device with occlusion detector
First Claim
Patent Images
1. A disposable wearable infusion device comprising:
- a reservoir that holds a liquid medicament;
a cannula having a distal end that delivers the liquid medicament to a patient;
a pump that displaces a volume of the liquid medicament along a path to the distal end of the cannula when actuated; and
a lock-out that mechanically and immediately precludes actuation of the pump in response to an occlusion within the path to the distal end of the cannula.
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Abstract
A disposable wearable infusion device comprises a reservoir that holds a liquid medicament and a cannula having a distal end that delivers the liquid medicament to a patient The device further comprises a pump that displaces a volume of the liquid medicament along a path to the cannula when actuated and a lock-out that precludes actuation of the pump when an occlusion occurs within the path to the distal end of the cannula.
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Citations
21 Claims
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1. A disposable wearable infusion device comprising:
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a reservoir that holds a liquid medicament; a cannula having a distal end that delivers the liquid medicament to a patient; a pump that displaces a volume of the liquid medicament along a path to the distal end of the cannula when actuated; and a lock-out that mechanically and immediately precludes actuation of the pump in response to an occlusion within the path to the distal end of the cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A disposable wearable infusion device comprising:
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a reservoir that holds a liquid medicament; a cannula having a distal end that delivers the liquid medicament to a patient; a pump that displaces a volume of the liquid medicament from the reservoir to the distal end of the cannula when actuated; a conduit that conducts the displaced liquid medicament to the distal end of the cannula; and a lock-out including a liquid medicament pressure detector that immediately and mechanically precludes actuation of the pump in response to an occlusion within the conduit to the distal end of the cannula. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A disposable wearable infusion device comprising:
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a reservoir that holds a liquid medicament; a cannula having a distal end that delivers the liquid medicament to a patient; a pump that displaces a volume of the liquid medicament from the reservoir to the distal end of the cannula when actuated; a conduit that extends from the pump to the cannula to conduct the displaced liquid medicament to the distal end of the cannula; a linkage that actuates the pump; and a lock-out including a liquid medicament pressure detector that immediately and mechanically disables the linkage to preclude actuation of the pump in response to an occlusion within the conduit to the distal end of the cannula. - View Dependent Claims (17, 18, 19, 20)
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21. A disposable wearable infusion device comprising:
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a base, the base having an adhesive layer for affixing the infusion device to the skin of a patient, an expandable/deflatable reservoir that holds a liquid medicament; a cannula having a distal end that delivers the liquid medicament to a patient; a pump that displaces a volume of the liquid medicament from the reservoir to the distal end of the cannula, when actuated; a conduit that extends from the pump to the cannula to conduct the displaced liquid medicament to the distal end of the cannula; a linkage that actuates the pump; and a lock-out including a liquid medicament pressure detector that immediately and mechaically disables the linkage to preclude actuation of the pump in response to an occlusion within the conduit to the distal end of the cannula, wherein the pressure detector comprises a flexible diaphragm that deflects responsive to back pressure within the conduit and deflection of the diaphragm disables the linkage in response to an occlusion within the conduit to the distal end of the cannula; and wherein the lock-out further includes a deflectable stop that is deflected into the linkage by the diaphragm in response to an occlusion within the conduit to the distal end of the cannula to immediately and mechanically disable the linkage and preclude actuation of the pump.
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Specification