INFUSION SET SELF-OCCLUSION MECHANISM
First Claim
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1. An infusion set for administering a fluid through the skin, the infusion set comprising:
- (a) a cannula having a lumen for fluid transfer through the skin;
(b) a retention arrangement maintaining an inserted position of said cannula through the skin; and
(c) a self-occlusion mechanism associated with said retention arrangement and with said cannula, said self-occlusion mechanism being configured such that, while said retention arrangement maintains an inserted position of said cannula, said self-occlusion mechanism is retained in a first non-occluding state and, if said retention arrangement ceases to maintain the inserted position of said cannula, said self-occlusion mechanism assumes a second state in which said self-occlusion mechanism at least partially occludes fluid flow through said cannula.
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Abstract
A device, system and method for occluding fluid flow through an infusion set detached from a patient'"'"'s body. The device includes a means for detecting loss of contact to a patient'"'"'s body and activating an occlusion mechanism accordingly.
38 Citations
12 Claims
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1. An infusion set for administering a fluid through the skin, the infusion set comprising:
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(a) a cannula having a lumen for fluid transfer through the skin; (b) a retention arrangement maintaining an inserted position of said cannula through the skin; and (c) a self-occlusion mechanism associated with said retention arrangement and with said cannula, said self-occlusion mechanism being configured such that, while said retention arrangement maintains an inserted position of said cannula, said self-occlusion mechanism is retained in a first non-occluding state and, if said retention arrangement ceases to maintain the inserted position of said cannula, said self-occlusion mechanism assumes a second state in which said self-occlusion mechanism at least partially occludes fluid flow through said cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for detecting disconnection of an infusion set from the skin of a subject, the system comprising:
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(a) a drug delivery device configured to deliver a controlled flow of a liquid drug, the drug delivery device including an arrangement for detecting occlusion of an outlet flow path; (b) an infusion set connected to said outlet flow path, said infusion set including a cannula for delivering the liquid drug through the skin of the subject; and (c) a self-occlusion mechanism associated with said infusion set, said self-occlusion mechanism being configured such that, when said cannula is removed from the skin of the subject, the self-occlusion mechanism at least partially occludes fluid flow through said infusion set.
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12. A method for facilitating detection of malfunction during delivery of a drug via an infusion set through the skin of a patient, the method comprising the steps of:
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(a) providing a flow-path from a drug delivery device via an infusion set through the skin of the patient; (b) providing a flow-path from a drug delivery device via an infusion set through the skin of the patient; (c) responsive to at least partial failure of said retention arrangement to retain the part of the infusion set secured against with the skin, generating at least partial occlusion of the flow path.
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Specification