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 needle or a trocar; and
a transcutaneous access tool insertion and retraction mechanism, wherein the insertion and retraction mechanism comprises;
a spring defining a longitudinal axis;
a first linkage and a second linkage coupled between the spring and a first sliding member;
the first sliding member coupled with the needle/trocar, wherein the first and second linkages configured to move the first sliding member in an insertion direction and a retraction direction in response to a force from the spring, wherein the first linkage includes a first end adjacent the spring and a second end directly coupled to the second linkage, wherein the first linkage rotates about the longitudinal axis of the spring and the second linkage rotates relative to the second end of the first linkage.
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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.
43 Citations
22 Claims
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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 needle or a trocar; and
a transcutaneous access tool insertion and retraction mechanism, wherein the insertion and retraction mechanism comprises;
a spring defining a longitudinal axis;
a first linkage and a second linkage coupled between the spring and a first sliding member;
the first sliding member coupled with the needle/trocar, wherein the first and second linkages configured to move the first sliding member in an insertion direction and a retraction direction in response to a force from the spring, wherein the first linkage includes a first end adjacent the spring and a second end directly coupled to the second linkage, wherein the first linkage rotates about the longitudinal axis of the spring and the second linkage rotates relative to the second end of the first linkage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a fluid reservoir;
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10. 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 and retraction mechanism configured to deploy the transcutaneous access tool, 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; linkages coupled between the torsion spring and the first sliding member such that energy stored in the torsion spring causes the linkages to move the first sliding member in the insertion direction and the retraction direction; and wherein the torsion spring has a longitudinal axis and the linkages rotate around the longitudinal axis of the torsion spring. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A transcutaneous access tool insertion and retraction mechanism configured to deploy a transcutaneous access tool including a cannula, and a needle or a trocar located inside of the cannula, the insertion and retraction mechanism comprising:
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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 (19, 20, 21, 22)
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Specification