Implantable pump with integrated refill detection
First Claim
1. A refill port for an implantable device with integral refill instrument placement detection, comprising:
- a pierceable septum disposed on the refill port for admitting a refill instrument, the pierceable septum having a first outer surface at least a portion of which is exposed outside the refill port and a second inner surface at least a portion of which is exposed inside the refill port;
a detector disposed inside the refill port with respect to the second inner surface of the pierceable septum for determining the placement of a refill instrument within the refill port; and
a base defining a refill port chamber for receiving a refill fluid;
wherein the detector is a switch that is fluidically separated from the refill port chamber wherein a resilient membrane separates the switch from the refill port chamber while allowing movement from the placement of a refill instrument within the refill port chamber to be translated to the switch.
1 Assignment
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Accused Products
Abstract
A refill port for an implantable device with integral refill instrument placement detection includes a pierceable septum and a detector. The pierceable septum is disposed on the refill port for admitting a refill instrument has a first outer surface at least a portion of which is exposed outside the refill port and a second inner surface at least a portion of which is exposed inside the refill port. The detector is disposed inside the refill port with respect to the second inner surface of the pierceable septum for determining the placement of a refill instrument within the refill port. The refill port can be provided on a refillable implantable drug delivery pump having control electronics so that the detector can trigger pump test features of the control electronics upon placement or removal of a refill instrument from the port.
42 Citations
28 Claims
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1. A refill port for an implantable device with integral refill instrument placement detection, comprising:
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a pierceable septum disposed on the refill port for admitting a refill instrument, the pierceable septum having a first outer surface at least a portion of which is exposed outside the refill port and a second inner surface at least a portion of which is exposed inside the refill port; a detector disposed inside the refill port with respect to the second inner surface of the pierceable septum for determining the placement of a refill instrument within the refill port; and a base defining a refill port chamber for receiving a refill fluid; wherein the detector is a switch that is fluidically separated from the refill port chamber wherein a resilient membrane separates the switch from the refill port chamber while allowing movement from the placement of a refill instrument within the refill port chamber to be translated to the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. In a refillable, implantable, drug delivery pump having a drug chamber and control electronics, a refill port system, comprising:
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a pierceable septum disposed on the refill port for admitting a refill instrument, the pierceable septum having a first outer surface at least a portion of which is exposed outside the refill port and a second inner surface at least a portion of which is exposed inside the refill port; and a detector disposed inside the refill port with respect to the second inner surface of the pierceable septum for determining the placement of a refill instrument within the refill port and generating an electronic communication in response to the placement; wherein the detector is electrically connected to the control electronics to trigger a refill diagnostic procedure based upon a refill instrument placement communication from the detector to the control electronics wherein a resilient membrane separates the switch from the refill port chamber while allowing movement from the placement of a refill instrument within the refill port chamber to be translated to the switch. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A refillable, implantable, drug delivery pump system, comprising:
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a drug chamber; control electronics; a refill port including; a refill port base defining a refill port chamber and defining a fluidic channel between the refill port chamber and the drug chamber; a pierceable septum disposed proximate a first end of the refill port chamber for admitting a refill needle, the pierceable septum having a first outer surface at least a portion of which is exposed outside the refill port chamber and a second inner surface at least a portion of which is exposed inside the refill port chamber; a detector disposed within the refill port for determining the placement of a refill needle within the refill port chamber and generating an electronic communication in response to the placement, the detector including; a first movable detector element disposed within the refill port chamber for moving in response to contact from a refill needle; and a second detector element comprising a switch fluidically separated by a resilient membrane from the refill port chamber and configured to detect movement by the first movable detector element indicating contact from a refill needle; wherein the detector is electrically connected to the control electronics to trigger at least one selected from the group consisting of an alarm and a refill diagnostic procedure based upon a refill needle placement communication from the detector to the control electronics. - View Dependent Claims (27, 28)
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Specification