Fluid delivery device, transcutaneous access tool and insertion mechanism for use therewith
First Claim
Patent Images
1. A fluid delivery device comprising:
- a fluid reservoir;
a transcutaneous access tool fluidly coupled to the fluid reservoir, the transcutaneous access tool including a cannula, and a needle or a trocar located inside the cannula;
a transcutaneous access tool insertion mechanism configured to deploy the transcutaneous access tool;
wherein the transcutaneous access tool insertion mechanism is configured to increase an insertion force as the needle/trocar moves in an insertion direction, the transcutaneous access tool insertion mechanism comprisinga first sliding member coupled with the needle/trocar and operable to move the needle/trocar in an insertion direction and in a retraction direction;
a second sliding member coupled with the cannula and operable to move the cannula in the insertion direction;
a torsion spring having a longitudinal axis;
first and second linkages coupled between the torsion spring and the first sliding member such that, upon deployment, energy stored in the torsion spring causes the first and second linkages to cooperate to move the first sliding member in the insertion direction and the retraction direction; and
wherein, upon deployment, the first linkage is arranged to rotate about the longitudinal axis of the torsion spring, and the first linkage and second linkage are arranged to rotate relative to each other about a moving pivot to move the first sliding member in the insertion direction and the retraction direction.
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Abstract
A fluid delivery device comprising a fluid reservoir; a transcutaneous access tool fluidly coupled to the fluid reservoir, the transcutaneous access tool including a needle or a trocar; and a transcutaneous access tool insertion mechanism for deploying the transcutaneous access tool, wherein the insertion mechanism is configured to insert and retract the needle/trocar in a single, uninterrupted motion.
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Citations
31 Claims
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1. A fluid delivery device comprising:
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a fluid reservoir; a transcutaneous access tool fluidly coupled to the fluid reservoir, the transcutaneous access tool including a cannula, and a needle or a trocar located inside the cannula; a transcutaneous access tool insertion mechanism configured to deploy the transcutaneous access tool; wherein the transcutaneous access tool insertion mechanism is configured to increase an insertion force as the needle/trocar moves in an insertion direction, the transcutaneous access tool insertion mechanism comprising a first sliding member coupled with the needle/trocar and operable to move the needle/trocar in an insertion direction and in a retraction direction; a second sliding member coupled with the cannula and operable to move the cannula in the insertion direction; a torsion spring having a longitudinal axis; first and second linkages coupled between the torsion spring and the first sliding member such that, upon deployment, energy stored in the torsion spring causes the first and second linkages to cooperate to move the first sliding member in the insertion direction and the retraction direction; and wherein, upon deployment, the first linkage is arranged to rotate about the longitudinal axis of the torsion spring, and the first linkage and second linkage are arranged to rotate relative to each other about a moving pivot to move the first sliding member in the insertion direction and the retraction direction. - 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 fluid delivery device comprising:
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a fluid reservoir; a transcutaneous access tool fluidly coupled to the fluid reservoir, the transcutaneous access tool including a cannula, and a needle or a trocar located inside the cannula; a transcutaneous access tool insertion mechanism configured to deploy the transcutaneous access tool; wherein the transcutaneous access tool insertion mechanism comprises a first sliding member coupled with the needle/trocar and operable to move the needle/trocar in an insertion direction and in a retraction direction; a second sliding member coupled with the cannula and operable to move the cannula in the insertion direction; a torsion spring having a longitudinal axis; first and second linkages coupled between the torsion spring and the first sliding member such that, upon deployment, energy stored in the torsion spring causes the first and second linkages to cooperate to move the first sliding member in the insertion direction and the retraction direction; and wherein, upon deployment, the first linkage is arranged to rotate about the longitudinal axis of the torsion spring, and the first linkage and second linkage are arranged to rotate relative to each other about a moving pivot to move the first sliding member in the insertion direction and the retraction direction. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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Specification