Modular fluid delivery device with quick-release / connect mechanism for drive screw
First Claim
1. A method for delivering fluid, the method comprising:
- providing a fluid delivery device having a reusable part that includes a motor and one or more gears and a disposable part that includes;
a reservoir containing the fluid;
a plunger configured to displace the fluid into and out of the reservoir, wherein the plunger is connected to a drive screw; and
an engagement member configured to engage with the drive screw, wherein prior to connection of the reusable part and the disposable part, the engagement member is disengaged from the drive screw allowing the drive screw to freely move within the engagement member;
positioning a free end of the drive screw within a receiving portion in the reusable part; and
connecting the reusable part with the disposable part, wherein, upon connection, the engagement member engages with the drive screw such that upon rotation of the engagement member, the drive screw and the plunger are linearly displaced to deliver fluid contained with the reservoir.
2 Assignments
0 Petitions
Accused Products
Abstract
Fluid delivery devices and means for engaging components therein are described. The devices may include a plunger positioned within a reservoir and connected to a non-rotating drive screw and a drive nut capable of engagement with the drive screw, where, upon engagement of the drive nut with the drive screw, rotation of the drive nut linearly displaces the drive screw. The devices may also be skin-securable and comprise a reusable part and a disposable part wherein, upon connection of the reusable part and the disposable part, the drive screw engages with the drive nut such that rotation of a motor and/or one or more gears results in rotation of the drive nut and linear displacement of the drive screw.
27 Citations
23 Claims
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1. A method for delivering fluid, the method comprising:
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providing a fluid delivery device having a reusable part that includes a motor and one or more gears and a disposable part that includes; a reservoir containing the fluid; a plunger configured to displace the fluid into and out of the reservoir, wherein the plunger is connected to a drive screw; and an engagement member configured to engage with the drive screw, wherein prior to connection of the reusable part and the disposable part, the engagement member is disengaged from the drive screw allowing the drive screw to freely move within the engagement member; positioning a free end of the drive screw within a receiving portion in the reusable part; and connecting the reusable part with the disposable part, wherein, upon connection, the engagement member engages with the drive screw such that upon rotation of the engagement member, the drive screw and the plunger are linearly displaced to deliver fluid contained with the reservoir.
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2. A fluid delivery device comprising:
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a disposable part including a reservoir and a plunger positioned within the reservoir and connected to a non-rotating drive screw; an engagement member having a body portion with external teeth, the body portion configured to engage with the drive screw; and a reusable part including a motor, one or more gears, and a receiving portion driven by at least one of the motor and the one or more gears, wherein; the receiving portion is configured to receive the drive screw and engage with the engagement member; the external teeth of the engagement member engage with inner teeth of the receiving portion; and upon connection of the reusable part and the disposable part, the engagement member engages with the drive screw and rotation of at least one of the motor and the one or more gears results in rotation of the engagement member to linearly displace the drive screw and the plunger to deliver fluid contained within the reservoir.
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3. A fluid delivery device comprising:
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a reusable part including a motor and one or more gears; a disposable part including a reservoir and a plunger positioned within the reservoir and connected to a non-rotating drive screw; and an engagement member configured to engage with the drive screw, wherein upon connection of the reusable part and the disposable part, the engagement member engages with the drive screw and rotation of at least one of the motor and the one or more gears results in rotation of the engagement member to linearly displace the drive screw and the plunger to deliver fluid contained within the reservoir. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification