Osmotic pump delivery system with flexible drug compartment
First Claim
1. An implantable osmotic pump system, comprising:
- a rigid pump housing defining an opening;
a plurality of membrane assemblies fined to the pump housing, at least one of the plurality of membrane assemblies including a semipermeable membrane and an impermeable membrane initially sealing the semipermeable membrane;
an osmotic engine within the rigid pump housing, and a flexible pharmaceutical agent compartment disposed within the rigid pump housing, the flexible pharmaceutical agent compartment being in fluid communication with the opening.
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Accused Products
Abstract
An implantable osmotic pump system includes a rigid pump housing defining an opening adapted to receive a catheter; one or more membrane assemblies fitted to the pump housing; an osmotic engine within the rigid pump housing and a flexible pharmaceutical agent compartment disposed within the pump housing. The flexible pharmaceutical agent compartment is adapted to enclose a volume of a pharmaceutical agent and to cause the pharmaceutical agent to be infused through the opening as water crosses the membrane assembly or assemblies and increases the volume of the osmotic engine. The flexible pharmaceutical agent compartment may include polyethylene teraphthalate (PET), for example, and/or may include a metallic layer such as gold, silver, platinum and/or aluminum, for example, to inhibit the transfer of gas or liquid across the compartment. A catheter may be bonded to the opening of the pump housing and to a corresponding opening in the flexible pharmaceutical agent compartment. The flexible pharmaceutical agent compartment may be free floating inside the pump housing, being only attached to the catheter and/or to the opening of the pump housing. As the present implantable osmotic pump does not include a movable piston, the pump housing may have a cylindrical shape in which the height of the pump housing is less than the diameter thereof, a non-cylindrical shape and/or a shape that conforms to the patient'"'"'s anatomy at the implant site.
135 Citations
45 Claims
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1. An implantable osmotic pump system, comprising:
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a rigid pump housing defining an opening;
a plurality of membrane assemblies fined to the pump housing, at least one of the plurality of membrane assemblies including a semipermeable membrane and an impermeable membrane initially sealing the semipermeable membrane;
an osmotic engine within the rigid pump housing, and a flexible pharmaceutical agent compartment disposed within the rigid pump housing, the flexible pharmaceutical agent compartment being in fluid communication with the opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An implantable osmotic pump, comprising:
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a pump housing;
an osmotic engines, the osmotic engine being disposed within the pump housing;
a plurality of semipermeable membranes, each of the plurality of semipermeable membranes being configured to allow water to cross from a patient into the pump housing to the osmotic engine, and a flexible pharmaceutical agent compartment adapted to enclose a volume of pharmaceutical agent. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. An implantable osmotic pump system, comprising:
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a rigid pump housing defining an opening;
at least one membrane assembly fitted to the pump housing, the membrane assembly including a semipermeable membrane and an impermeable membrane initially sealing the semipermeable membrane and adapted to be breached by a lancet, the impermeable membrane being disposed away from the semipermeable membrane to define a fluid tight compartment, the fluid tight compartment enclosing a volume of an aqueous solution;
an osmotic engine within the rigid pump housing, and a flexible pharmaceutical agent compartment disposed within the rigid pump housing, the flexible pharmaceutical agent compartment being in fluid communication with the opening. - View Dependent Claims (40)
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41. An implantable osmotic pump system, comprising:
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a rigid pump housing defining an opening;
at least one membrane assembly fitted to the pump housing, the membrane assembly including a semipermeable membrane and an impermeable membrane initially sealing the semipermeable membrane and adapted to be breached by a lancet, the impermeable membrane including a layer of one of gold, silver, platinum and platinum-iridium;
an osmotic engine within the rigid pump housing, and a flexible pharmaceutical agent compartment disposed within the rigid pump housing, the flexible pharmaceutical agent compartment being in fluid communication with the opening.
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42. An implantable osmotic pump system, comprising:
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a rigid pump housing defining an opening;
a plurality of membrane assemblies fitted to the pump housing;
an osmotic engine within the rigid pump housing, and a flexible pharmaceutical agent compartment disposed within the rigid pump housing, the flexible pharmaceutical agent compartment being in fluid communication with the opening. - View Dependent Claims (43, 44, 45)
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Specification