Implantable infusion pump
First Claim
1. An infusion pump having a variable-volume fluid chamber for implantation in a living body, the pump comprising:
- a housing;
a driving spring;
an inlet conduit, having a self-sealing penetrable member positioned therein, extends between an outer surface of the housing and the fluid chamber; and
an outlet conduit, in communication with the fluid chamber, is adapted to deliver a fluid from the fluid chamber, wherein the self-sealing penetrable member is adapted to be accessible through a surface of a living body when the pump is implanted therein to facilitate provision of a fluid to the fluid chamber, wherein the driving spring is adapted to supply a principle force to drive fluid transiently stored in the fluid chamber into the outlet conduit, and wherein the outlet conduit extends through the driving spring.
1 Assignment
0 Petitions
Accused Products
Abstract
An implantable infusion pump to deliver stored infusate to a desired fluid delivery site. The pump includes a collapsible fluid chamber. The pump can include a multi-stage filtration system to filter micro-emboli as well as larger particles that are inadvertently introduced into the pump system. An external member can receive the pump and provide a medium to include additional, interactive components, e.g., a bolus port, as well as provide a versatile suture structure to enable the pump to be properly secured within an implantation site. To improve volumetric efficiency, the pump can further incorporate an outlet flow passage within a movable wall of the fluid chamber.
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Citations
30 Claims
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1. An infusion pump having a variable-volume fluid chamber for implantation in a living body, the pump comprising:
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a housing;
a driving spring;
an inlet conduit, having a self-sealing penetrable member positioned therein, extends between an outer surface of the housing and the fluid chamber; and
an outlet conduit, in communication with the fluid chamber, is adapted to deliver a fluid from the fluid chamber, wherein the self-sealing penetrable member is adapted to be accessible through a surface of a living body when the pump is implanted therein to facilitate provision of a fluid to the fluid chamber, wherein the driving spring is adapted to supply a principle force to drive fluid transiently stored in the fluid chamber into the outlet conduit, and wherein the outlet conduit extends through the driving spring. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An implantable infusion pump having a variable-volume fluid chamber to transiently store a fluid solution, the pump comprising:
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a hardened shell structure;
an elastomer spring diaphragm operatively joined to the shell structure, wherein the shell structure and the spring diaphragm cooperate to form the fluid chamber; and
a fluid flow passage, in fluid communication with the fluid chamber, is adapted to deliver a fluid solution from the fluid chamber to an infusion site, such passage being substantially embedded within the spring diaphragm, wherein the spring diaphragm is operatively biased toward the shell structure. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An infusion pump for implantation in a living body, the pump comprising:
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a housing defining a portion of a collapsible fluid-tight chamber;
a moveable spring diaphragm, defining another portion of the chamber, adapted to (i) exert a force on a solution stored in the chamber and (ii) compensate for changes in body pressure by communicating such changes to the chamber;
an inlet conduit, having a self-sealing, penetrable member, extending between an exterior surface of the housing and the chamber;
an outlet conduit in fluid communication with the chamber and an infusion site in the body, wherein at least a portion of the outlet conduit passes through the spring diaphragm; and
a reinforced-elastomer suture structure, extending substantially continuously about a perimeter of the pump, adapted to receive and to retain a suture placed along substantially an entire length of the suture structure.
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21. An infusion pump for implantation in a living body, the pump comprising:
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a housing defining a portion of a collapsible fluid-tight chamber;
a moveable spring diaphragm, defining another portion of the chamber, adapted to (i) exert a force on a solution stored in the chamber and (ii) compensate for changes in body pressure by communicating such changes to the chamber;
an inlet conduit, having a self-sealing, penetrable member, extending between an exterior surface of the housing and the chamber; and
an outlet conduit in fluid communication with the chamber and an infusion site in the body, wherein at least a portion of the outlet conduit passes through the spring diaphragm.
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22. An infusion pump for implantation in a living body, the pump comprising:
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a housing defining a collapsible fluid chamber to transiently store infusate;
an outlet conduit, in communication with the fluid chamber, is adapted to deliver infusate to a delivery site; and
a multi-stage filter system, positioned within the outlet conduit, to filter infusate prior to its delivery to the delivery site. - View Dependent Claims (23, 24)
a micro-filter stage to filter sub-micron emboli from the infusate; and
a particulate filter stage to filter particles greater than 1 micron from the infusate, wherein the particulate filter stage is positioned downstream from the micro-filter stage.
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25. An infusion pump for implantation in a living body, the pump comprising:
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a housing defining at least a portion of a variable-volume fluid chamber to receive an infusate;
an inlet conduit, having a self-sealing penetrable member positioned therein, positioned at a surface of the housing and being in communication with the fluid chamber;
an outlet conduit in communication with the fluid chamber and connectable to a delivery catheter;
a flow restrictor, positioned between the fluid chamber and the delivery catheter;
a first filter stage, positioned prior to the flow restrictor; and
a second filter stage, interpositioned between the first filter stage and the flow restrictor. - View Dependent Claims (26)
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27. An infusion pump for implantation in a living body, the pump comprising:
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a housing having a collapsible fluid chamber to transiently store infusate and an energy source to collapse the fluid chamber;
an inlet conduit, having a self-sealing penetrable member positioned therein, located at a first position relative to the housing and in communication with the fluid chamber;
an outlet conduit, in communication with the fluid chamber, adapted to deliver infusate to a delivery site; and
a member having;
a first mating surface to receive the housing; and
a reinforced-elastomer suture structure, extending substantially about a perimeter of the member, adapted to receive and maintain sutures applied to secure the pump at an implantation site.
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28. An infusion pump for implantation in a living body, the pump comprising:
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a housing having a collapsible fluid chamber to store infusate and an energy source to collapse the fluid chamber;
an inlet conduit, having a self-sealing penetrable member positioned therein, located at a first position relative to the housing and in communication with the fluid chamber;
an outlet conduit, extending between the fluid chamber and an output aperture;
a bolus port, which includes a self-sealing penetrable member;
a boot structure having;
a first mating surface to receive the housing; and
a bolus port receptacle, having an inlet passage and an outlet passage, to receive the bolus port, wherein the outlet passage is adapted to deliver infusate to a delivery site; and
a connection conduit to extend between the inlet of the bolus port receptacle and the output aperture of the outlet conduit. - View Dependent Claims (29, 30)
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Specification