Fluid delivery device, transcutaneous access tool and fluid drive mechanism for use therewith
First Claim
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1. A fluid delivery device comprising:
- a fluid reservoir;
a transcutaneous access tool fluidly coupled to the fluid reservoir; and
a drive mechanism for driving fluid from the fluid reservoir, the drive mechanism comprising;
a plunger received in the fluid reservoir;
an elongated assembly comprising a first elongated member and a second elongated member;
the first elongated member extending from the plunger;
the second elongated member coupled to the first elongated member;
a drive wheel; and
a clutch mechanism coupled to the drive wheel wherein the clutch mechanism is configured to allow the second elongated member to pass through when disengaged and is configured to grip the second elongated member without threaded engagement when engaged, such that the drive wheel rotates the second elongated member to advance the first elongated member and the plunger into the fluid reservoir.
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Abstract
A fluid delivery device comprising a fluid reservoir; a transcutaneous access tool fluidly coupled to the fluid reservoir; and a drive mechanism for driving fluid from the reservoir, the drive mechanism comprising a plunger received in the reservoir; a leadscrew extending from the plunger; a nut threadably engaged with the leadscrew; a drive wheel; and a clutch mechanism coupled to the drive wheel, wherein the clutch mechanism is configured to allow the nut to pass through when disengaged and is configured to grip the nut when engaged such that the drive wheel rotates the nut to advance the drive rod and the plunger into the reservoir.
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Citations
15 Claims
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1. A fluid delivery device comprising:
- a fluid reservoir;
a transcutaneous access tool fluidly coupled to the fluid reservoir; and
a drive mechanism for driving fluid from the fluid reservoir, the drive mechanism comprising;
a plunger received in the fluid reservoir;
an elongated assembly comprising a first elongated member and a second elongated member;
the first elongated member extending from the plunger;
the second elongated member coupled to the first elongated member;
a drive wheel; and
a clutch mechanism coupled to the drive wheel wherein the clutch mechanism is configured to allow the second elongated member to pass through when disengaged and is configured to grip the second elongated member without threaded engagement when engaged, such that the drive wheel rotates the second elongated member to advance the first elongated member and the plunger into the fluid reservoir. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a fluid reservoir;
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8. A method of operating a fluid delivery device comprising:
- providing the fluid delivery device, the device comprising a fluid reservoir;
a transcutaneous access tool fluidly coupled to the fluid reservoir; and
a drive mechanism for driving fluid from the fluid reservoir, the drive mechanism comprising an elongated assembly comprising a first elongated member and a second elongated member;
the first elongated member extending from a plunger;
the second elongated member coupled to the first elongated member;
a drive wheel; and
a clutch mechanism coupled to the drive wheel, wherein the clutch mechanism is configured to allow the second elongated member to pass through when disengaged and is configured to grip the second elongated member to pass through when disengaged and is configured to grip the second elongated member without threaded engagement when engaged, such that the drive wheel rotates the second elongated member to advance the first elongated member and the plunger into the fluid reservoir;
holding the clutch mechanism in a disengaged position;
filing the fluid reservoir with fluid;
passing the second elongated member through the clutch mechanism such that the plunger is retracted within the fluid reservoir;
releasing the clutch mechanism from the disengaged position; and
engaging the clutch mechanism with the second elongated member. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
- providing the fluid delivery device, the device comprising a fluid reservoir;
Specification