System for anchoring medical devices
First Claim
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1. An anchor device for securing the position of a medical device, comprising:
- an external retainer assembly comprising a base, a cap configured to releasably couple with the base, and a gripping channel configured to engage an exterior surface of a medical device; and
first and second anchors that extend distally from a distal end of the external retainer assembly, each anchor comprising a flexible tine that is deployable in a subcutaneous region to secure the external retainer assembly relative to a skin penetration point;
wherein the external retainer assembly defines a longitudinal axis extending from a proximal end to a distal end, and the gripping channel has a non-circular cross-sectional shape in a plane generally perpendicular to the longitudinal axis, the non-circular cross-sectional shape defined in part by flat channel walls of the base and in part by flat channel walls of the cap and the cap has an outer peripheral shape that is non-symmetrical about the longitudinal axis.
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Abstract
Some embodiments of a medical device anchor system include an anchor device that receives a catheter (or other medical instrument) and secures the catheter in place relative to a skin penetration point. In some embodiments, the anchor device can secure the catheter in an operative position relative to the skin without the use of sutures or skin tapes. In particular embodiments, the anchor device can be adjusted to a folded condition so that subcutaneous anchors are partially rotated prior to removal from the skin penetration point.
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Citations
22 Claims
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1. An anchor device for securing the position of a medical device, comprising:
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an external retainer assembly comprising a base, a cap configured to releasably couple with the base, and a gripping channel configured to engage an exterior surface of a medical device; and first and second anchors that extend distally from a distal end of the external retainer assembly, each anchor comprising a flexible tine that is deployable in a subcutaneous region to secure the external retainer assembly relative to a skin penetration point; wherein the external retainer assembly defines a longitudinal axis extending from a proximal end to a distal end, and the gripping channel has a non-circular cross-sectional shape in a plane generally perpendicular to the longitudinal axis, the non-circular cross-sectional shape defined in part by flat channel walls of the base and in part by flat channel walls of the cap and the cap has an outer peripheral shape that is non-symmetrical about the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An anchor device for securing the position of a medical device, comprising:
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an external retainer assembly comprising a base, a cap configured to releasably couple with the base, and a gripping channel configured to engage an exterior surface of a medical device, wherein the base comprises one or more means for aligning the medical device adjacent to the base prior to engagement of the base with the cap; and first and second anchors that extend distally from a distal end of the external retainer assembly, each anchor comprising a flexible tine that is deployable in a subcutaneous region to secure the external retainer assembly relative to a skin penetration point; wherein the external retainer assembly defines a longitudinal axis extending from a proximal end to a distal end, and the gripping channel has a non-circular cross-sectional shape in a plane generally perpendicular to the longitudinal axis, the non-circular cross-sectional shape defined in part by the base and in part by the cap. - View Dependent Claims (15, 16)
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17. An anchor system for securing a catheter relative to a skin penetration point, comprising:
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a catheter having an exterior cylindrical surface; an external retainer assembly comprising a base, a cap configured to releasably couple with the base, and a gripping channel having flat, inwardly facing walls to compress upon opposing sides of the exterior cylindrical surface of the catheter such that the gripping channel defines a cross-sectional channel shape that is different from a cross-sectional catheter shape at the exterior cylindrical surface of the catheter; and first and second anchors that extend distally from a distal end of the external retainer assembly, each anchor comprising a flexible tine that is deployable in a subcutaneous region to secure the external retainer assembly relative to a skin penetration point; wherein the gripping channel is defined in part by the base and in part by the cap. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification