Infusion medium delivery device and method with drive device for driving plunger in reservoir
First Claim
1. A delivery device for delivering an infusion medium to a user, the device comprising:
- a disposable housing adapted to be carried by a user, the disposable housing including a reservoir container retaining portion;
a durable housing configured to be selectively engaged with and disengaged from the disposable housing to allow disposal of the disposable housing without disposing of the durable housing, the durable housing having an enclosure structure that separates an enclosed interior volume from an exterior volume located external to the enclosure structure;
a reservoir comprising a container having an interior for containing a fluidic medium and a piston plunger moveable within the interior of the reservoir container in a direction of an axis of the reservoir container, wherein the reservoir container is supported and carried by the disposable housing, the reservoir container being configured to be received by the reservoir container retaining portion and to be manually removable from the reservoir container retaining portion once received by the reservoir container retaining portion;
a lead shaft supported for rotation about a lead shaft axis and carried by the durable housing, the lead shaft having a threaded portion located in the exterior volume, external to the enclosed interior volume of the durable housing, the threaded portion of the lead shaft being arranged to engage the piston plunger at an engagement location on the piston plunger and move the piston plunger along the axis of the reservoir with rotation of the lead shaft when the durable housing is engaged with the disposable housing, the lead shaft axis being laterally offset from the axis of the reservoir at the engagement location, the lead shaft having a connection portion located within the enclosed interior volume of the durable housing, wherein the lead shaft extends through an aperture in the durable housing between the interior volume of the durable housing and the exterior volume; and
a drive device operatively connected to the connection portion of the lead shaft, to selectively rotate the lead shaft.
2 Assignments
0 Petitions
Accused Products
Abstract
A delivery device includes a durable housing portion and a separable disposable portion that selectively engage and disengage from each other. The disposable housing portion secures to the patient-user and may be disposed of after it has been in use for a prescribed period. Components that normally come into contact with a patient-user or with infusion medium are supported by the disposable housing portion, while the durable housing portion supports other components such as electronics and a drive device. A reservoir is supported by the disposable housing portion and has a moveable plunger that operatively couples to the drive device, when the disposable and durable housing portions are engaged.
227 Citations
34 Claims
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1. A delivery device for delivering an infusion medium to a user, the device comprising:
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a disposable housing adapted to be carried by a user, the disposable housing including a reservoir container retaining portion; a durable housing configured to be selectively engaged with and disengaged from the disposable housing to allow disposal of the disposable housing without disposing of the durable housing, the durable housing having an enclosure structure that separates an enclosed interior volume from an exterior volume located external to the enclosure structure; a reservoir comprising a container having an interior for containing a fluidic medium and a piston plunger moveable within the interior of the reservoir container in a direction of an axis of the reservoir container, wherein the reservoir container is supported and carried by the disposable housing, the reservoir container being configured to be received by the reservoir container retaining portion and to be manually removable from the reservoir container retaining portion once received by the reservoir container retaining portion; a lead shaft supported for rotation about a lead shaft axis and carried by the durable housing, the lead shaft having a threaded portion located in the exterior volume, external to the enclosed interior volume of the durable housing, the threaded portion of the lead shaft being arranged to engage the piston plunger at an engagement location on the piston plunger and move the piston plunger along the axis of the reservoir with rotation of the lead shaft when the durable housing is engaged with the disposable housing, the lead shaft axis being laterally offset from the axis of the reservoir at the engagement location, the lead shaft having a connection portion located within the enclosed interior volume of the durable housing, wherein the lead shaft extends through an aperture in the durable housing between the interior volume of the durable housing and the exterior volume; and a drive device operatively connected to the connection portion of the lead shaft, to selectively rotate the lead shaft. - 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. A method of assembling a delivery device for delivering an infusion medium to a user, the method comprising:
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providing a disposable housing adapted to be carried by a user, the disposable housing including a reservoir container retaining portion; configuring a durable housing to be selectively engaged with and disengaged from the disposable housing to allow disposal of the disposable housing without disposing of the durable housing, the durable housing having an enclosure structure that separates an enclosed interior volume from an exterior volume located external to the enclosure structure; receiving and carrying a reservoir container by the reservoir retaining portion of the disposable housing, the reservoir container having an interior for containing a fluidic medium, the reservoir container being configured to be manually removable from the reservoir container retaining portion once the reservoir container is received by the reservoir container retaining portion; supporting a piston plunger for movement within the interior of the reservoir container in a direction of an axis of the reservoir container; supporting and carrying a lead shaft by the durable housing for rotation about a lead shaft axis, including arranging a threaded portion of the lead shaft external to the enclosed interior volume of the durable housing, arranging a connection portion of the lead shaft within the enclosed interior volume of the durable housing, and extending the lead shaft through an aperture in the durable housing between the interior volume of the durable housing and the exterior volume; engaging the threaded portion of the lead shaft with the piston plunger at an engagement location on the piston plunger for moving the piston plunger along the axis of the reservoir with rotation of the lead shaft when the durable housing is engaged with the disposable housing, the lead shaft axis being laterally offset from the axis of the reservoir at the engagement location; and operatively connecting a drive device to the connection portion of the lead shaft, to selectively rotate the lead shaft. - View Dependent Claims (26, 27, 28)
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29. A device for conveying a fluidic medium to or from a user, the device comprising:
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a first housing adapted to be carried by a user, the first housing including a reservoir container retaining portion; a second housing configured to be selectively engaged with and disengaged from the first housing, the second housing having an enclosure structure that separates an enclosed interior volume from an exterior volume located external to the enclosure structure; a reservoir comprising a container having an interior for containing a fluidic medium and a piston plunger moveable within the interior of the reservoir container in a direction of an axis of the reservoir container, wherein the reservoir container is supported and carried by the first housing, the reservoir container being configured to be received by the reservoir container retaining portion and to be manually removable from the reservoir container retaining portion once received by the reservoir container retaining portion; a lead shaft supported and carried for rotation about a lead shaft axis by the second housing, the lead shaft having a threaded portion located external to the enclosed interior volume of the second housing, the threaded portion of the lead shaft being arranged to engage the piston plunger at an engagement location on the piston plunger and move the piston plunger along the axis of the reservoir with rotation of the lead shaft when the second housing is engaged with the first housing, the lead shaft axis being laterally offset from the axis of the reservoir at the engagement location, the lead shaft having a connection portion located within the enclosed interior volume of the second housing, wherein the lead shaft extends through an aperture in the second housing between the interior volume of the second housing portion and the exterior volume; and a drive device operatively connected to the connection portion of the lead shaft, to selectively rotate the lead shaft. - View Dependent Claims (30, 31, 32, 33)
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34. A device for conveying a fluidic medium to or from a user, the device comprising:
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a first housing adapted to be carried by a user, the first housing including a reservoir container retaining portion; a second housing configured to be selectively engaged with and disengaged from the first housing, the second housing having an enclosure structure that separates an enclosed interior volume from an exterior volume located external to the enclosure structure; a reservoir comprising a container having an interior for containing a fluidic medium and a piston plunger moveable within the interior of the reservoir container, wherein the reservoir container is supported and carried by the first housing, the reservoir container being configured to be received by the reservoir container retaining portion and to be manually removable from the reservoir container retaining portion once received by the reservoir container retaining portion; a lead shaft supported and carried for rotation by the second housing, the lead shaft having a threaded portion located external to the enclosed interior volume of the second housing for engaging the piston plunger and moving the piston plunger with rotation of the lead shaft when the second housing is engaged with the first housing, the lead shaft having a connection portion located within the enclosed interior volume of the second housing, wherein the lead shaft extends through an aperture in the second housing between the interior volume of the second housing portion and the exterior volume; a drive device operatively connected to the connection portion of the lead shaft, to selectively rotate the lead shaft; and first and second supports for supporting the lead shaft for rotation in the second housing, the first and second supports being spaced apart from each other; wherein the threaded portion of the lead shaft external to the enclosed interior volume of the second housing for engaging the piston plunger is located between the first and second supports.
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Specification