FLUID DELIVERY DEVICE
First Claim
Patent Images
1. A fluid delivery device comprising:
- a fluid reservoir;
a plunger received in said fluid reservoir;
a threaded drive rod coupled to said plunger to advance said plunger in said fluid reservoir;
a drive wheel coupled to said threaded drive rod;
a pivotable drive engaging member including at least one arm configured to engage and incrementally rotate said drive wheel; and
a linear actuator coupled to said pivotable drive engaging member to pivot said pivotable drive engaging member, wherein said linear actuator causes the pivotable drive engaging member to pivot when actuated.
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Abstract
A fluid delivery device may include a fluid driving mechanism for driving fluid out of a reservoir and an actuating mechanism for actuating the driving mechanism. The fluid delivery device may also include one or more sensors for monitoring operation of the fluid delivery device. The fluid delivery device may also include a chassis providing mechanical and/or electrical connections between components of the fluid delivery device.
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Citations
27 Claims
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1. A fluid delivery device comprising:
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a fluid reservoir;
a plunger received in said fluid reservoir;
a threaded drive rod coupled to said plunger to advance said plunger in said fluid reservoir;
a drive wheel coupled to said threaded drive rod;
a pivotable drive engaging member including at least one arm configured to engage and incrementally rotate said drive wheel; and
a linear actuator coupled to said pivotable drive engaging member to pivot said pivotable drive engaging member, wherein said linear actuator causes the pivotable drive engaging member to pivot when actuated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A fluid delivery device comprising:
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a fluid reservoir;
a plunger received in said fluid reservoir;
a threaded drive rod coupled to said plunger to advance said plunger in said fluid reservoir;
a drive wheel coupled to said threaded drive rod;
an actuating mechanism configured to engage and incrementally rotate said drive wheel; and
a rotational sensor extending across said drive wheel, said drive wheel being configured to engage said rotational sensor during rotation to cause said rotational sensor to contact a conductive path activating an electrical signal indicating rotation of said drive wheel. - View Dependent Claims (21, 22)
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23. A fluid delivery device comprising:
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a fluid reservoir;
a plunger received in said fluid reservoir;
a threaded drive rod coupled to said plunger to advance said plunger in said fluid reservoir;
a drive wheel configured to threadably engage said threaded drive rod, said drive wheel being configured to impart linear motion to said threaded drive rod when said drive wheel rotates;
an actuating mechanism configured to engage and incrementally rotate said drive wheel; and
a fill sensor extending across a path of said threaded drive rod, said threaded drive rod being configured to engage said fill sensor when said plunger is at a predetermined location in said fluid reservoir to cause said fill sensor to contact an electrically conductive path enabling an electrical signal indicating an amount of fluid in said fluid reservoir. - View Dependent Claims (24, 25)
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26. A fluid delivery device comprising:
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a fluid reservoir;
a plunger received in said fluid reservoir;
a threaded drive rod coupled to said plunger to advance said plunger in said fluid reservoir;
a drive wheel configured to receive said threaded drive rod, said drive wheel including a thread engaging mechanism configured to move from a non-thread-engaging position to a thread engaging position in which said thread engaging mechanism engages threads of said threaded drive rod, said drive wheel being configured to impart linear motion to said threaded drive rod when said thread engaging mechanism is in said thread engaging position and said drive wheel rotates; and
an actuating mechanism configured to engage and incrementally rotate said drive wheel. - View Dependent Claims (27)
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Specification