Operating an infusion pump system
First Claim
Patent Images
1. An infusion pump device, comprising:
- a pump housing that defines an exterior opening to slidably receive a medicine cartridge inside a space of the pump housing;
a drive system to dispense a medicine from the medicine cartridge when the medicine cartridge is received by the pump housing; and
a cap device that directly engages the pump housing to cover the exterior opening of the pump housing and to retain the medicine cartridge inside the pump housing when the medicine cartridge is received by the pump housing,wherein when the cap device engages the pump housing, the cap device acts upon the medicine cartridge to urge a plunger of the medicine cartridge to attach to a component of the drive system.
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Accused Products
Abstract
Some embodiments of a medical infusion pump system include a pump device having a cap device that mates with a pump housing to retain a medicine cartridge therein. In addition to retaining the medicine cartridge in the pump housing, the cap device may perform a number of preparatory functions or safety functions. In addition or in the alternative, some embodiments of the pump device may include a drive system that advances a piston rod to dispense medicine to the patient in a safe and energy efficient manner.
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Citations
48 Claims
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1. An infusion pump device, comprising:
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a pump housing that defines an exterior opening to slidably receive a medicine cartridge inside a space of the pump housing; a drive system to dispense a medicine from the medicine cartridge when the medicine cartridge is received by the pump housing; and a cap device that directly engages the pump housing to cover the exterior opening of the pump housing and to retain the medicine cartridge inside the pump housing when the medicine cartridge is received by the pump housing, wherein when the cap device engages the pump housing, the cap device acts upon the medicine cartridge to urge a plunger of the medicine cartridge to attach to a component of the drive system. - View Dependent Claims (2, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14, 36)
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4. The infusion pump device comprising
a pump housing that defines a space to receive a medicine cartridge; -
a drive system to dispense a medicine from the medicine cartridge when the medicine cartridge is received by the pumping housing; and a cap device that directly engages the pump housing to retain the medicine cartridge therein when the medicine cartridge is received by the pumping housing, wherein the cap device houses at least a portion of a flow sensor to detect flow or nonflow of medicine through the cap device, and wherein the cap device engages the pump housing, the cap device acts upon the medicine cartridge to urge a plunger of the medicine cartridge to attach to a component of the drive system. - View Dependent Claims (38, 39)
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5. An infusion pump device comprising:
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a pump housing that defines an exterior opening to slidably receive a medicine cartridge inside a space of the pump housing; a drive system to dispense a medicine from the medicine cartridge when the medicine cartridge is received by the pump housing; and a cap device that engages the pump housing to cover the exterior opening of the pump housing and to retain the medicine cartridge inside the pump housing when the medicine cartridge is received by the pump housing, wherein when the cap device engages the pump housing, the cap device acts upon the medicine cartridge to urge a plunger of the medicine cartridge to attach to a component of the drive system, wherein at least a portion of the cap device locks with the pump housing to hinder replacement of the medicine cartridge after the medicine cartridge is exhausted. - View Dependent Claims (41, 42)
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15. An infusion pump device, comprising:
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a pump housing that defines an exterior opening to slidably receive a medicine cartridge inside a space of the pump housing; a drive system to dispense a medicine from the medicine cartridge when the medicine cartridge is received by the pump housing; the drive system comprising a battery-powered actuator housed inside the pump housing and a piston rod that is advanced toward the medicine cartridge to dispense the medicine from the medicine cartridge when the medicine cartridge is received by the pump housing, the piston rod having a plunger engagement device that adjusts from a disengaged condition in which the plunger engagement device is spaced away from the plunger to an engaged condition in which the plunger engagement device attaches to the plunger when the medicine cartridge is received by the pump housing. - View Dependent Claims (16, 17, 19, 21, 37, 43)
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18. An infusion pump device, comprising:
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a pump housing that defines a space to receive a medicine cartridge; a drive system to dispense a medicine from the medicine cartridge when the medicine cartridge is received by the pump housing; the drive system comprising a piston rod having a plunger engagement device that attaches to the plunger of the medicine cartridge when the medicine cartridge is received by the pump housing, wherein the plunger engagement device comprises one or more penetration members that pierce into a first side of the plunger during attachment of the plunger and the plunger engagement device, wherein the penetration members comprise substantially rigid blades that penetrate longitudinally into the plunger. - View Dependent Claims (40)
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20. An infusion pump device, comprising:
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a pump housing that defines an exterior opening to slidably receive a medicine cartridge inside a space of the pump housing; and a drive system comprising a battery-powered actuator and configured to dispense a medicine from the medicine cartridge when the medicine cartridge is received by the pump housing; the drive system comprising a piston rod that is advanced toward the medicine cartridge dispense the medicine from the medicine cartridge when the medicine cartridge is received by the pump housing, the piston rod having a plunger engagement device that adjusts from a disengaged condition in which the plunger engagement device is spaced away from the plunger to an engaged condition in which the plunger engagement device attaches to the plunger when the medicine cartridge is received by the pump housing, wherein the plunger engagement device comprises one or more penetration members that pierce into a first side of the plunger during attachment of the plunger and the plunger engagement device, and wherein the penetration members penetrate longitudinally into the plunger through a majority of the longitudinal length of the plunger, the penetration members reducing the compliance of the plunger when being forced toward the medicine in the cartridge. - View Dependent Claims (44, 45, 46)
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22. An infusion pump device, comprising:
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a pump housing that defines a space to receive a medicine cartridge; a drive system to dispense a medicine from the medicine cartridge when the medicine cartridge is received by the pump housing; and a cap device that directly engages the pump housing by mechanically securing the cap device to one or more mating structures of the pump housing so as to retain the medicine cartridge therein when the medicine cartridge is received by the pump housing, wherein when the cap device engages the pump housing, the cap device contacts a wall of the medicine cartridge at a location spaced away from a plunger of the medicine cartridge to urge an initial breakaway movement of the plunger inside the medicine cartridge. - View Dependent Claims (23, 24, 25, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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26. An infusion pump device, comprising:
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a pump housing that defines a space to receive a medicine cartridge; a drive system to dispense a medicine from the medicine cartridge when the medicine cartridge is received by the pump housing; and a cap device that engages the pump housing by mechanically securing the cap device to one or more mating structures of the pump housing so as to retain the medicine cartridge therein when the medicine cartridge is received by the pump housing, wherein when the cap device engages the pump housing, the cap device contacts a wall of the medicine cartridge at a location spaced away from a plunger of the medicine cartridge to urge an initial breakaway movement of the plunger inside the medicine cartridge, and wherein at least a portion of the cap device locks with the pump housing to hinder replacement of the medicine cartridge after the medicine cartridge is exhausted. - View Dependent Claims (47, 48)
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Specification