Implantable infusion device including anti-sealing reservoir
First Claim
1. An implantable infusion device (IID) comprising:
- a housing;
an expandable and contractible reservoir configured to store a therapeutic agent and arranged within the housing, wherein a first end of the reservoir is configured to move with respect to the housing and collapse toward a second end of the reservoir as the reservoir contracts, and wherein the first end of the reservoir and the second end of the reservoir are configured to contact the therapeutic agent, and wherein the reservoir defines an inlet through which the therapeutic agent is received and an outlet through which the therapeutic agent exits the reservoir, the inlet being different than the outlet; and
a standoff member interposed between the first end and the second end of the reservoir, wherein the standoff member is configured to hold at least a portion of the first end offset from the second end and maintain a flow path between the inlet and the outlet when the reservoir is in a contracted state, and wherein the first end of the reservoir comprises the standoff member.
1 Assignment
0 Petitions
Accused Products
Abstract
Techniques are disclosed for reducing the accumulation of gases in an implantable infusion device. In one example, an implantable infusion device (IID) includes a housing, an expandable and contractible reservoir, and a standoff member. The expandable and contractible reservoir is configured to store a therapeutic agent and is arranged within the housing. A first end of the reservoir is configured to collapse toward a second end of the reservoir as the reservoir contracts. The standoff member is interposed between the first end and the second end of the reservoir and is configured to hold at least a portion of the first end offset from the second end when the reservoir is in a contracted state.
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Citations
29 Claims
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1. An implantable infusion device (IID) comprising:
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a housing; an expandable and contractible reservoir configured to store a therapeutic agent and arranged within the housing, wherein a first end of the reservoir is configured to move with respect to the housing and collapse toward a second end of the reservoir as the reservoir contracts, and wherein the first end of the reservoir and the second end of the reservoir are configured to contact the therapeutic agent, and wherein the reservoir defines an inlet through which the therapeutic agent is received and an outlet through which the therapeutic agent exits the reservoir, the inlet being different than the outlet; and a standoff member interposed between the first end and the second end of the reservoir, wherein the standoff member is configured to hold at least a portion of the first end offset from the second end and maintain a flow path between the inlet and the outlet when the reservoir is in a contracted state, and wherein the first end of the reservoir comprises the standoff member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An implantable infusion device (IID) comprising:
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a housing; an expandable and contractible reservoir configured to store a therapeutic agent and arranged within the housing, the reservoir comprising; a first end connected to the housing; a substantially closed second end comprising a protrusion protruding toward the first end; and a side connecting the first and the second ends to form a reservoir chamber within which the reservoir stores the therapeutic agent, wherein the second end of the reservoir is configured to move with respect to the housing and collapse toward the first end as the reservoir contracts, wherein the first end of the reservoir and the second end of the reservoir are configured to contact the therapeutic agent, wherein the reservoir defines an inlet through which the therapeutic agent is received and an outlet through which the therapeutic agent exits the reservoir, the inlet being different than the outlet, and wherein the protrusion is configured to hold at least a portion of the second end offset from the first end and maintain a flow path between the inlet and the outlet when the reservoir is in a contracted state. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A reservoir configured to store a therapeutic agent in an implantable infusion device (IID), the reservoir comprising:
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a first end comprising a ring-shape that forms an opening toward a center of the first end; a second substantially closed planar end comprising a protrusion protruding toward the first end, wherein the second end is configured to move with respect to a housing of the IID, and wherein the first end and the second end are configured to contact the therapeutic agent; and a corrugated annular side substantially perpendicular to the first and the second ends and connecting the first and the second ends to form a cylindrical chamber within which the reservoir stores the therapeutic agent, wherein the corrugated annular side is configured to expand and contract to change a distance between the first end and the second end of the reservoir, wherein the reservoir defines an inlet through which the therapeutic agent is received and an outlet through which the therapeutic agent exits the reservoir, the inlet being different than the outlet, and wherein the protrusion is configured to hold at least a portion of the second end offset from the first end and maintain a flow path between the inlet and the outlet when the reservoir is in a contracted state.
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29. An implantable infusion device (IID) comprising:
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a housing; an expandable and contractible reservoir configured to store a therapeutic agent and arranged within the housing, wherein a first end of the reservoir is configured to move with respect to the housing and collapse toward a second end of the reservoir as the reservoir contracts, and wherein the first end of the reservoir and the second end of the reservoir are configured to contact the therapeutic agent, and wherein the reservoir defines an inlet through which the therapeutic agent is received and an outlet through which the therapeutic agent exits the reservoir, the inlet being different than the outlet; and a standoff means interposed between the first end and the second end of the reservoir, wherein the standoff means is for holding at least a portion of the first end offset from the second end and maintain a flow path between the inlet and the outlet when the reservoir is in a contracted state, and wherein the first end of the reservoir comprises the standoff means.
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Specification