Extended Use Medical Device
First Claim
1. A medical device for administering drug therapy to a user over an extended period of use, said medical device comprising:
- a pump mechanism for administering a drug to the user;
first and second delivery cannulas for infusing said drug transdermally into the user at first and second infusion sites; and
first and second mechanisms for separately controlling deployment of the first and second cannulas into said user at said first and second infusion sites.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is an extended use self-contained, wearable medical device. The device is preferably configured with an infusion deployment mechanism for variably inserting and retracting an infusion needle to different depths, or completely retracting the infusion needle from the infusion site and then re-inserting the infusion needle after a predetermined period of time, throughout an infusion cycle for extending the viability of the infusion site. Another embodiment comprises dual needle deployment mechanisms which may also variably insert and retract the infusion needles. A flow sensor is preferably provided for detecting the stoppage of flow through the infusion cannula and signaling the needle deployment mechanism to attempt infusion at a different depth or to deploy a second infusion needle. A re-fillable reservoir assembly is preferably provided for supplying a drug over the extended use of the device. Another embodiment comprises a partially reusable and partially disposable medical device implementing the above features.
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Citations
67 Claims
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1. A medical device for administering drug therapy to a user over an extended period of use, said medical device comprising:
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a pump mechanism for administering a drug to the user; first and second delivery cannulas for infusing said drug transdermally into the user at first and second infusion sites; and first and second mechanisms for separately controlling deployment of the first and second cannulas into said user at said first and second infusion sites. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A medical device for administering drug therapy to a user over an extended period of use, said medical device comprising:
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a pump mechanism for administering a drug to the user; a delivery cannula for infusing said drug transdermally into the user at an infusion site; and a mechanism for controlling deployment of the cannula into said user, wherein said mechanism is configured to variably move said cannula to a first depth and a second depth. - View Dependent Claims (17, 18)
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19. A method for extending the use of a medical device comprising a first and second delivery cannula for administering drug therapy to a user, the method comprising:
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deploying the first cannula into the user at an infusion site for administering a drug to the user; retracting said first cannula from said user; and deploying the second cannula into said user at a second infusion site for administering said drug to said user. - View Dependent Claims (20, 21, 22, 23)
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24. A method for extending the use of a medical device comprising a single delivery cannula for administering drug therapy to a user, the method comprising:
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deploying the delivery cannula into the user at an infusion site to a desired depth for administering a drug to said user; variably moving said cannula to a second desired depth, while administering said drug to said user. - View Dependent Claims (25, 26)
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27. A method for extending the use of a medical device comprising a single delivery cannula for administering drug therapy to a user, the method comprising:
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deploying the delivery cannula into the user at an infusion site to a desired depth for administering a drug to said user; determining a predetermined period of time has lapsed since deployment of said delivery cannula; retracting said cannula from the user when it is determined that the predetermined time has lapsed; and re-inserting the cannula at the infusion site, after a second predetermined period, for re-administering the drug to said user. - View Dependent Claims (28)
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29. A partially disposable and partially reusable medical device for administering drug therapy to a user, said medical device comprising:
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a reusable housing and a disposable housing, each with at least one exposed interface for engaging each other;
whereinthe reusable housing contains; a pump mechanism for administering a drug to the user; a cannula deployment mechanism for deploying a delivery cannula for infusing said drug into the user; and a controller for controlling the pump mechanism and the cannula deployment mechanism; and the disposable housing contains; the delivery cannula; and a reservoir for housing a drug supply for infusion into said user. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A programmable drug delivery device for administering drug therapy to a user, said programmable drug delivery device comprising:
a housing comprising a programmable controller, a drug cartridge, an infusion needle, and a mechanism for metering a calculated bolus dose of a drug to the user, wherein the controller is programmed by a host device which calculates the bolus dose of the drug to be administered to the user through said infusion needle and programs the controller to set said dosage to be administered to the user. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56)
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57. A wearable medical device for administering drug therapy to a user, said medical device comprising:
an integral housing containing a reservoir for housing a supply of a drug, in fluid communication with an infusion cannula for delivering the drug to the user, a pump mechanism device for administering delivery of the drug from the reservoir to the user through the infusion cannula, and a preprogrammed controller to control the pump mechanism to provide a preprogrammed drug delivery profile to the user. - View Dependent Claims (58, 59, 60)
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61. A method for administering extended drug therapy to a user using a partially reusable and partially disposable medical device, the method comprising:
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affixing a reusable housing at a location on a user'"'"'s body; engaging a first disposable housing to the reusable housing at a disposable housing engagement site, the first disposable housing having an infusion site at a first location; providing drug therapy to the user from a reservoir provided in the first disposable housing; disengaging said first disposable housing from said reusable housing; engaging a second disposable housing to said reusable housing at said disposable housing engagement site, the second disposable housing having an infusion site at a second location; and providing drug therapy to the user from a reservoir provided in the second disposable housing. - View Dependent Claims (62, 63, 64, 65, 66, 67)
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Specification