Refillable implantable drug delivery pump
First Claim
1. An implantable drug delivery device, comprising:
- a dispensing chamber having an upper surface, said dispensing chamber comprising;
a dispensing passage formed along an interior surface of said dispensing chamber and having an intake end and an outlet end; and
an actuator for applying to said dispensing passage a rotational compressive force moving in a direction from said intake end towards said outlet end; and
a reservoir housing provided adjacent said upper surface of said dispensing chamber and having a reservoir provided therein, said reservoir being in fluid communication with said intake end of said dispensing passage; and
means for filling said reservoir, wherein said means for filling is provided in relation to a surface of said reservoir housing which is not adjacent to said upper surface of said dispensing chamber.
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Accused Products
Abstract
An implantable drug delivery pump includes a reservoir, a dispensing chamber adjacent to the reservoir, a dispensing passage provided along an interior surface of the dispensing chamber, and an actuator for applying a moving compressive force onto the dispensing passage. The pump is subcutaneously implantable in a patient, and a drug is injected into the reservoir through a septum provided on a housing for the reservoir. As the compressive force applied by the actuator moves along the dispensing passage, the drug preparation is simultaneously pushed out of the dispensing passage into a catheter for delivery to the desired site, and additional drug preparation is drawn into the dispensing passage from the reservoir. The actuator includes a rotating arm driven by an motor at a controllable rate.
400 Citations
30 Claims
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1. An implantable drug delivery device, comprising:
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a dispensing chamber having an upper surface, said dispensing chamber comprising;
a dispensing passage formed along an interior surface of said dispensing chamber and having an intake end and an outlet end; and
an actuator for applying to said dispensing passage a rotational compressive force moving in a direction from said intake end towards said outlet end; and
a reservoir housing provided adjacent said upper surface of said dispensing chamber and having a reservoir provided therein, said reservoir being in fluid communication with said intake end of said dispensing passage; and
means for filling said reservoir, wherein said means for filling is provided in relation to a surface of said reservoir housing which is not adjacent to said upper surface of said dispensing chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An implantable drug delivery device comprising:
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a dispensing chamber having an upper surface, said dispensing chamber comprising;
a dispensing passage formed along an interior surface of said dispensing chamber and having an intake end and an outlet end, wherein said interior surface of said dispensing chamber is circular, whereby said dispensing passage is provided on a circular path along said interior surface; and
an actuator for applying to said dispensing passage a compressive force moving in a direction from said intake end towards said outlet end, said actuator comprising;
a rotatable compressor having an axis of rotation at a center of the circular path of said dispensing passage;
a contact member connected on an end of said rotatable compressor distal from said axis of rotation, said contact member generating said compressive force on said dispensing passage; and
a motor for rotating said rotatable compressor; and
a reservoir housing provided adjacent said upper surface of said dispensing chamber and having a reservoir provided therein, said reservoir being in fluid communication with said intake end of said dispensing passage. - View Dependent Claims (14, 15, 16, 17)
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18. A method for operating an implantable drug delivery device, comprising:
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providing a dispensing chamber having an upper surface, an interior surface, and an outer circumferential surface;
providing a dispensing passage along an interior surface of a dispensing chamber, said dispensing passage having an intake end and an outlet end;
providing a reservoir filled with a fluid and in fluid communication with said intake end of said dispensing passage;
housing said reservoir in a reservoir housing adjacent to said upper surface of said dispensing chamber and having an outer circumferential surface concentric with said outer circumferential surface of said dispensing chamber;
applying a compressive force on said dispensing passage; and
moving said compressive force in a direction from said intake end towards said outlet end, thereby urging fluid contained between said compressive force and said outlet end out of said outlet end, and drawing fluid from said reservoir into said dispensing passage through said intake end. - View Dependent Claims (19, 20, 21, 22)
said providing said dispensing passage comprises providing said dispensing passage such that said dispensing passage traces a circular path along said interior portion of said dispensing chamber;
said applying said compressive force comprises providing a rotatable compressor having a contact member at one end, said compressor compressing said dispensing passage between said contact member and said interior portion of said dispensing chamber; and
said moving said compressive force comprises rotating said compressor about an axis of rotation at a center of said circular path, thereby moving said contact member along said dispensing passage in a direction from said intake end towards said outlet end.
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21. The method of claim 18, further comprising inserting a material between said reservoir and said reservoir housing to apply a compressive force onto said reservoir.
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22. The device of claim 21, wherein inserting said material between said reservoir and said reservoir housing comprises inserting a material which is a liquid at low temperature and a gas at body temperature.
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23. An implantable drug delivery device, comprising:
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a dispensing chamber having an upper surface, a round inner surface, and a round outer surface;
a reservoir adjacent to said upper surface of said dispensing chamber and having a round outer surface concentric with said round outer surface of said dispensing chamber;
a dispensing passage provided along a circular path on said round inner surface of said dispensing chamber, said dispensing passage having an intake end connected to said reservoir and an outlet end adjacent said intake end;
a rotatable arm rotatable about an axis of rotation located at a center of said circular path;
a contact member provided on an end of said rotatable arm distal to said axis of rotation, said contact member compressing said dispensing passage against said inner surface of said dispensing chamber; and
a motor for rotating said rotatable arm. - View Dependent Claims (24, 25, 26)
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27. An implantable drug delivery device, comprising:
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a dispensing chamber having an upper surface, said dispensing chamber comprising;
a dispensing passage formed along an interior surface of said dispensing chamber and having an intake end and an outlet end; and
an actuator for applying to said dispensing passage a rotational compressive force moving in a direction from said intake end towards said outlet end; and
a reservoir housing provided adjacent said upper surface of said dispensing chamber and having a reservoir provided therein, said reservoir being in fluid communication with said intake end of said dispensing passage; and
a filling septum provided in relation to a surface of said reservoir housing which is not adjacent to said upper surface of said dispensing chamber. - View Dependent Claims (28, 29, 30)
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Specification