Systems and methods for anchoring medical devices
First Claim
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1. An anchor device for securing the position of a medical instrument, the anchor device comprising:
- first and second anchors each having a longitudinal shaft portion and a tine disposed at a distal region of the longitudinal shaft portion, wherein at least a portion of the first and second anchors are configured to be deployed through a skin penetration point and into a subcutaneous region along an underside of a skin layer;
a retainer base coupled to the first and second anchors and configured to engage an external portion of a medical instrument occupying the skin penetration point, the retainer base including an elastically flexible folding region about which the retainer base is adjustable between a first position and a folded position, wherein the longitudinal shaft portion of each of the first and second anchors extends distally from a distal end of the retainer base; and
a cap that is releasably attachable with an upper side of the retainer base so as to define a channel therebetween that is sized to engage with the external portion of the medical instrument when the cap and the retainer base are in a first arrangement, wherein the cap is removable from the medical instrument when the cap and the retainer base are in a second arrangement, and wherein the cap is configured to pivot in relation to the retainer base about a pivot axis defined by a connection through a location of cooperative engagement between the retainer base and the cap during adjustment between the first arrangement and the second arrangement.
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Abstract
Some embodiments of a medical device anchor system include an anchor device that secures a medical instrument (such as a catheter or the like) in place relative to a skin penetration point using subcutaneous anchors. In some implementations, the medical instrument can be coupled to the anchor device using a snap-lock cap mechanism.
98 Citations
17 Claims
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1. An anchor device for securing the position of a medical instrument, the anchor device comprising:
- first and second anchors each having a longitudinal shaft portion and a tine disposed at a distal region of the longitudinal shaft portion, wherein at least a portion of the first and second anchors are configured to be deployed through a skin penetration point and into a subcutaneous region along an underside of a skin layer;
a retainer base coupled to the first and second anchors and configured to engage an external portion of a medical instrument occupying the skin penetration point, the retainer base including an elastically flexible folding region about which the retainer base is adjustable between a first position and a folded position, wherein the longitudinal shaft portion of each of the first and second anchors extends distally from a distal end of the retainer base; and
a cap that is releasably attachable with an upper side of the retainer base so as to define a channel therebetween that is sized to engage with the external portion of the medical instrument when the cap and the retainer base are in a first arrangement, wherein the cap is removable from the medical instrument when the cap and the retainer base are in a second arrangement, and wherein the cap is configured to pivot in relation to the retainer base about a pivot axis defined by a connection through a location of cooperative engagement between the retainer base and the cap during adjustment between the first arrangement and the second arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- first and second anchors each having a longitudinal shaft portion and a tine disposed at a distal region of the longitudinal shaft portion, wherein at least a portion of the first and second anchors are configured to be deployed through a skin penetration point and into a subcutaneous region along an underside of a skin layer;
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11. An anchor device for securing the position of a medical instrument, the anchor device comprising:
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one or more anchors each having a longitudinal shaft portion and a tine disposed at a distal region of the longitudinal shaft portion, wherein at least a portion of the one or more anchors are configured to be deployed through a skin penetration point and into a subcutaneous region along an underside of a skin layer; a retainer base coupled to the one or more anchors, the retainer base including a first channel, wherein the first channel is configured to receive an external portion of a medical instrument occupying the skin penetration point; a cap that is releasably attachable with an upper side of the retainer base to engage an external portion of a medical instrument when the cap and the retainer base are in a first arrangement, the cap removable from the medical instrument when the cap and the retainer base are in a second arrangement, wherein the cap includes a first connector that defines a pivotable connection between the cap and the retainer base such that the cap is configured to pivot in relation to the retainer base about a pivot axis defined by the pivotable connection between the cap and the retainer base, and a second connector that is fixedly positioned relative to the first connector such that the first connector remains spaced a fixed distance from the second connector when the cap is transitioned between the first and second arrangements; and wherein the retainer base comprises a first tab including an upper surface that is exposed when the cap is in the first arrangement and the second arrangement. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification