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 portion adapted to be secured to a user;
a durable housing portion configured to be selectively engaged with and disengaged from the disposable housing portion to allow disposal of the disposable housing portion without disposing of the durable housing portion;
a reservoir supported by the disposable housing portion when the durable housing portion is engaged with the disposable housing portion and when the durable housing portion is disengaged from the disposable housing portion, the reservoir having an interior for containing a fluidic medium and a plunger moveable within the interior of the reservoir along an axial direction of the reservoir, the plunger having a threaded channel having first and second open ends;
a rotatable shaft disposed at least partially within the reservoir interior, along the axial direction of the reservoir, the rotatable shaft extending through the threaded channel and out of the first and second ends of the threaded channel of the plunger and having a threaded portion operatively engaged with the threaded channel of the plunger when the durable housing portion is engaged with the disposable housing portion and when the durable housing portion is disengaged from the disposable housing portion, wherein rotation of the rotatable shaft causes the plunger to move along the length of the threaded portion of the rotatable shaft to vary the interior volume of the reservoir, the rotatable shaft having a connection end located external to the reservoir; and
a drive device supported by the durable housing portion, the drive device having a rotatable drive linkage member that operatively connects to the connection end of the rotatable shaft, to transfer rotary motion to the rotatable shaft to selectively rotate the rotatable shaft, when the disposable and durable housing portions are engaged and that disconnects from the connection end of the rotatable shaft when the disposable and durable housing portions are disengaged;
wherein the rotatable shaft extends out of the first end of the threaded channel and at least partially into the reservoir interior that is for containing a fluidic medium.
1 Assignment
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.
-
Citations
36 Claims
-
1. A delivery device for delivering an infusion medium to a user, the device comprising:
-
a disposable housing portion adapted to be secured to a user; a durable housing portion configured to be selectively engaged with and disengaged from the disposable housing portion to allow disposal of the disposable housing portion without disposing of the durable housing portion; a reservoir supported by the disposable housing portion when the durable housing portion is engaged with the disposable housing portion and when the durable housing portion is disengaged from the disposable housing portion, the reservoir having an interior for containing a fluidic medium and a plunger moveable within the interior of the reservoir along an axial direction of the reservoir, the plunger having a threaded channel having first and second open ends; a rotatable shaft disposed at least partially within the reservoir interior, along the axial direction of the reservoir, the rotatable shaft extending through the threaded channel and out of the first and second ends of the threaded channel of the plunger and having a threaded portion operatively engaged with the threaded channel of the plunger when the durable housing portion is engaged with the disposable housing portion and when the durable housing portion is disengaged from the disposable housing portion, wherein rotation of the rotatable shaft causes the plunger to move along the length of the threaded portion of the rotatable shaft to vary the interior volume of the reservoir, the rotatable shaft having a connection end located external to the reservoir; and a drive device supported by the durable housing portion, the drive device having a rotatable drive linkage member that operatively connects to the connection end of the rotatable shaft, to transfer rotary motion to the rotatable shaft to selectively rotate the rotatable shaft, when the disposable and durable housing portions are engaged and that disconnects from the connection end of the rotatable shaft when the disposable and durable housing portions are disengaged; wherein the rotatable shaft extends out of the first end of the threaded channel and at least partially into the reservoir interior that is for containing a fluidic medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A delivery device for delivering an infusion medium to a user, the device comprising:
-
a disposable housing portion adapted to be secured to a user; a durable housing portion configured to be selectively engaged with and disengaged from the disposable housing portion to allow disposal of the disposable housing portion without disposing of the durable housing portion; a reservoir supported by the disposable housing portion, the reservoir having an interior for containing a fluidic medium and a plunger moveable within the interior of the reservoir along an axial direction of the reservoir, the plunger having a threaded channel; a rotatable shaft disposed at least partially within the reservoir interior, along the axial direction of the reservoir, the rotatable shaft extending through the threaded channel of the plunger and having a threaded portion operatively engaged with the threaded channel of the plunger, wherein rotation of the rotatable shaft causes the plunger to move along the length of the threaded portion of the rotatable shaft to vary the interior volume of the reservoir; a drive device supported by the durable housing portion in a position to operatively connect to the rotatable shaft, to selectively rotate the rotatable shaft, when the disposable and durable housing portions are engaged; and at least one seal arranged between the rotatable shaft and the threaded channel of the plunger, to inhibit the passage of the fluidic medium through the threaded channel of the plunger; wherein the at least one seal comprises at least one layer of sealing material disposed over and fixed relative to the rotatable shaft, or a plurality of o-ring seals disposed around and fixed relative to the rotatable shaft. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
-
-
23. A method of making a delivery device for delivering an infusion medium to a user, the method comprising:
-
providing a first housing portion adapted to be secured to a user; providing a second housing portion configured to be selectively engaged with and disengaged from the first housing portion to allow disposal of the first housing portion without disposing of the second housing portion; supporting a reservoir on the first housing portion when the second housing portion is engaged with the first housing portion and when the second housing portion is disengaged from the first housing portion, the reservoir having an interior for containing a fluidic medium; arranging a plunger within the interior of the reservoir and moveable relative to the reservoir along an axial direction of the reservoir, the plunger having a threaded channel having first and second open ends; arranging a rotatable shaft at least partially within the reservoir interior, along the axial direction of the reservoir, extending the rotatable shaft through the threaded channel and out of the first and second ends of the threaded channel of the plunger, and operatively engaging a threaded portion of the rotatable shaft with the threaded channel of the plunger when the second housing portion is engaged with the first housing portion and when the second housing portion is disengaged from the first housing portion, wherein rotation of the rotatable shaft relative to the plunger causes the plunger to move along the length of the threaded portion of the rotatable shaft to vary the interior volume of the reservoir, the rotatable shaft having a connection end located external to the reservoir; and supporting a drive device on the second housing portion the drive device having a rotatable drive linkage member that operatively connects to the connection end of the rotatable shaft, to transfer rotary motion to the rotatable shaft to selectively rotate the rotatable shaft, when the first and second housing portions are engaged and that disconnects from the connection end of the rotatable shaft when the first and second housing portions are disengaged; wherein extending the rotatable shaft comprises extending the rotatable shaft out of the first end of the threaded channel and at least partially into the reservoir interior that is for containing a fluidic medium. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
-
-
34. A method of making a delivery device for delivering an infusion medium to a user, the method comprising:
-
providing a first housing portion adapted to be secured to a user; providing a second housing portion configured to be selectively engaged with and disengaged from the first housing portion to allow disposal of the first housing portion without disposing of the second housing portion; supporting a reservoir on the first housing portion, the reservoir having an interior for containing a fluidic medium; arranging a plunger within the interior of the reservoir and moveable relative to the reservoir along an axial direction of the reservoir, the plunger having a threaded channel; arranging a rotatable shaft at least partially within the reservoir interior, along the axial direction of the reservoir, extending the rotatable shaft through the threaded channel of the plunger, and operatively engaging a threaded portion of the rotatable shaft with the threaded channel of the plunger, wherein rotation of the rotatable shaft relative to the plunger causes the plunger to move along the length of the threaded portion of the rotatable shaft to vary the interior volume of the reservoir; supporting a drive device on the second housing portion in a position to operatively connect to the rotatable shaft, to selectively rotate the rotatable shaft, when the first and second housing portions are engaged; and arranging at least one seal between the rotatable shaft and the threaded channel of the plunger, to inhibit the passage of the fluidic medium through the threaded channel of the plunger; wherein arranging at least one seal comprises providing at least one layer of sealing material over and fixed to the rotatable shaft or providing a plurality of o-ring seals disposed around and fixed to the rotatable shaft. - View Dependent Claims (35, 36)
-
Specification