Two-compartment reduced volume infusion pump
First Claim
1. An infusion apparatus implantable in a human body, comprising:
- a medication reservoir for storing a medication;
a carrier reservoir for storing a carrier, wherein the carrier reservoir is larger than the medication reservoir;
a mixing chamber in which the medication and carrier are thoroughly mixed, thus diluting the medication with the carrier, said mixing chamber being a micro fluidic chip having a capillary pathway disposed in a serpentine pattern;
a medication flow path fluidly connecting the medication reservoir to the mixing chamber;
a carrier flow path fluidly connecting the carrier reservoir to the mixing chamber;
a medication pump system for discharging the medication to the mixing chamber;
a carrier pump system for discharging the carrier to the mixing chamber;
an outlet port fluidly connected to the mixing chamber for discharging a diluted medication/carrier mixture; and
a bolus port disposed between the mixing chamber and the outlet port.
1 Assignment
0 Petitions
Accused Products
Abstract
An implantable infusion apparatus has a medication reservoir for storing a medication and a carrier reservoir for storing a carrier. The entire apparatus, including both reservoirs, is typically located in a housing made of stainless steel, titanium, or any other strong corrosion resistant biocompatible material. The medication and carrier reservoirs are accessed through a medication access port and a carrier access port, respectively. The access ports are covered with a medication compound septum and a carrier compound septum, respectively. The carrier reservoir is larger, and thus holds a larger volume, than the medication reservoir. To reduce the size of the implantable infusion apparatus, the medication is highly concentrated to many times the dosage required. The concentrated medication is then diluted with the carrier, to the proper dose, before it is discharged to the patient.
23 Citations
51 Claims
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1. An infusion apparatus implantable in a human body, comprising:
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a medication reservoir for storing a medication; a carrier reservoir for storing a carrier, wherein the carrier reservoir is larger than the medication reservoir; a mixing chamber in which the medication and carrier are thoroughly mixed, thus diluting the medication with the carrier, said mixing chamber being a micro fluidic chip having a capillary pathway disposed in a serpentine pattern; a medication flow path fluidly connecting the medication reservoir to the mixing chamber; a carrier flow path fluidly connecting the carrier reservoir to the mixing chamber; a medication pump system for discharging the medication to the mixing chamber; a carrier pump system for discharging the carrier to the mixing chamber; an outlet port fluidly connected to the mixing chamber for discharging a diluted medication/carrier mixture; and a bolus port disposed between the mixing chamber and the outlet port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An implantable infusion apparatus comprising:
a medication reservoir for storing a medication; a carrier reservoir for storing a carrier, wherein the carrier reservoir is larger than the medication reservoir; a mixing chamber in which the medication may be mixed with and diluted by the carrier, said mixing chamber being a microfluidic chip having a capillary pathway disposed in a serpentine pattern; a medication flow path fluidly connecting the medication reservoir to the mixing chamber; a carrier flow path fluidly connecting the carrier reservoir to the mixing chamber; a medication pump system for discharging the medication into the mixing chamber; a carrier pump system for discharging the carrier into the mixing chamber; an electronically controlled medication flow selector disposed in the medication flow path for controlling a discharge rate of the medication to the mixing chamber; an outlet port fluidly connected to mixing chamber for discharging a diluted medication/carrier mixture; and a bolus port disposed between the mixing chamber and the outlet port. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method of infusing medication comprising:
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storing a medication in a medication reservoir; storing a carrier in a carrier reservoir, wherein the carrier reservoir is larger than the medication reservoir; discharging the medication to a mixing chamber; discharging the carrier to the mixing chamber; mixing the medication with the carrier in the mixing chamber to dilute medication and form a medication/carrier mixture, wherein the mixing chamber is a micro fluidic chip having a capillary pathway disposed in a serpentine pattern; discharging the diluted medication/carrier mixture; and introducing a bolus dosage into the diluted medication/carrier mixture prior to discharging the diluted medication/carrier mixture. - View Dependent Claims (39, 40, 41, 42, 43, 44)
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45. A method of infusing medication comprising:
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storing a medication in a medication reservoir; storing a carrier in a carrier reservoir, wherein the carrier reservoir is larger than the medication reservoir; controlling the discharge of the medication into a mixing chamber; discharging the carrier into the mixing chamber; mixing the medication with the carrier in the mixing chamber to dilute it to form a diluted medication/carrier mixture, wherein the mixing chamber is a micro fluidic chip having a capillary pathway disposed in a serpentine pattern; discharging the diluted medication/carrier mixture; and introducing a bolus dosage into the diluted medication/carrier mixture prior to discharging the diluted medication/carrier mixture. - View Dependent Claims (46, 47, 48, 49, 50, 51)
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Specification