Systems and methods allowing for reservoir filling and infusion medium delivery
First Claim
1. A system, comprising:
- a reservoir for holding an infusion medium;
a piston disposed at least partially within the reservoir, the piston being moveable to allow the infusion medium to fill into the reservoir and to force the infusion medium out of the reservoir;
a plunger shaft connected to the piston, the plunger shaft having a mating portion for mating with a linkage portion of a drive device for driving the plunger shaft so as to move the piston to force the infusion medium out of the reservoir when the linkage portion of the drive device is mated with the mating portion of the plunger shaft; and
a handle, the handle having a handle mating portion for mating with the mating portion of the plunger shaft, the handle further having a gripping portion for gripping the plunger shaft, the handle capable of being used by a user to move the plunger shaft so as to move the piston to allow the infusion medium to fill into the reservoir when the handle mating portion of the handle is mated with the mating portion of the plunger shaft;
wherein the mating portion of the plunger shaft has a length such that at least some of the mating portion of the plunger shaft remains outside of the reservoir at all times while the plunger shaft is moved by the handle.
1 Assignment
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Accused Products
Abstract
A system includes a durable portion with a durable housing and a separable disposable portion with a disposable housing that selectively engage with and disengage from each other. The disposable housing secures to a patient and may be disposed of after it has been in use for a prescribed period. Components that normally come into contact with a patient or with an infusion medium may be part of the disposable portion to allow for disposal after a prescribed use. A reservoir for holding the infusion medium may be part of the disposable portion, and may be supported by the disposable housing. The durable portion may include other components such as electronics for controlling delivery of the infusion medium from the reservoir, and a drive device including a motor and drive linkage.
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Citations
41 Claims
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1. A system, comprising:
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a reservoir for holding an infusion medium; a piston disposed at least partially within the reservoir, the piston being moveable to allow the infusion medium to fill into the reservoir and to force the infusion medium out of the reservoir; a plunger shaft connected to the piston, the plunger shaft having a mating portion for mating with a linkage portion of a drive device for driving the plunger shaft so as to move the piston to force the infusion medium out of the reservoir when the linkage portion of the drive device is mated with the mating portion of the plunger shaft; and a handle, the handle having a handle mating portion for mating with the mating portion of the plunger shaft, the handle further having a gripping portion for gripping the plunger shaft, the handle capable of being used by a user to move the plunger shaft so as to move the piston to allow the infusion medium to fill into the reservoir when the handle mating portion of the handle is mated with the mating portion of the plunger shaft; wherein the mating portion of the plunger shaft has a length such that at least some of the mating portion of the plunger shaft remains outside of the reservoir at all times while the plunger shaft is moved by the handle. - 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, 25, 26)
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27. A system, comprising:
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a plunger shaft connected to a piston, the plunger shaft having a mating portion; a handle having a handle mating portion for mating with the mating portion of the plunger shaft, the handle further having a gripping portion for gripping the plunger shaft, the handle capable of being pulled to move the plunger shaft so as to move the piston within a reservoir to allow an infusion medium to fill into the reservoir when the handle mating portion of the handle is mated with the mating portion of the plunger shaft; and a drive device having a linkage portion for mating with the mating portion of the plunger shaft, the drive device configured to drive the plunger shaft so as to move the piston within the reservoir to force the infusion medium out of the reservoir when the linkage portion of the drive device is mated with the mating portion of the plunger shaft; wherein the mating portion of the plunger shaft has a length such that at least some of the mating portion of the plunger shaft remains outside of the reservoir at all times while the plunger shaft is driven by the drive device. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method of manufacturing a system, comprising:
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providing a reservoir; disposing a piston at least partially within the reservoir such that the piston is moveable within the reservoir to allow an infusion medium to fill into the reservoir and to force the infusion medium out of the reservoir; connecting a plunger shaft to the piston, the plunger shaft having a mating portion for mating with a linkage portion of a drive device and drivable by the drive device so as to move the piston to force the infusion medium out of the reservoir when the linkage portion of the drive device is mated with the mating portion of the plunger shaft; and providing a handle that has a handle mating portion for mating with the mating portion of the plunger shaft and that further has a gripping portion for gripping the plunger shaft, the handle capable of being used to move the plunger shaft so as to move the piston to allow the infusion medium to fill into the reservoir when the handle mating portion of the handle is mated with the mating portion of the plunger shaft; wherein the mating portion of the plunger shaft has a length such that at least some of the mating portion of the plunger shaft remains outside of the reservoir at all times while the plunger shaft is driven by the drive device. - View Dependent Claims (39, 40, 41)
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Specification