Anchor device and method
First Claim
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1. A method of anchoring a medical device to skin of a patient, the method comprising:
- inserting at least a portion of an elongate body through a dermis layer so that a subcutaneous anchor mechanism flexibly adjusts from an outwardly extending orientation to a first bent orientation in which free ends of the subcutaneous anchor mechanism extend toward a proximal end of the elongate body, wherein the elongate body comprises a body wall that at least partially defines a lumen to slideably receive a catheter and the subcutaneous anchor mechanism is coupled to the elongate body at a location proximal from a distal tip of the elongate body; and
removing the elongate body from the dermis layer so that the subcutaneous anchor mechanism flexibly adjusts from a deployed orientation in a subcutaneous layer beneath the dermis layer to a second bent orientation in which the free ends of the subcutaneous anchor mechanism non-retractably extend toward the distal tip of the elongate body when the anchor mechanism exits through the dermis layer,wherein removing the elongate body so that the subcutaneous anchor mechanism flexibly adjusts comprises receiving at least one of the free ends of the anchor mechanism in at least one reduced-diameter portion formed in the body wall that extends distally of said at least one of the free ends to accommodate said at least one of the free ends when said at least one of the free ends is flexed distally toward the body wall of the elongate body.
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Abstract
Some embodiments of an anchor device may include bendable anchor mechanism that is deployable in a subcutaneous layer to releasably secure the anchor device to a patient'"'"'s body. Certain embodiments of the anchor mechanism may include one or more barbs that flexibly bend in response to an insertion or removal force. As such, the anchor mechanism may be inserted into a subcutaneous layer, and removed from the subcutaneous layer, without the need for a separate actuation device to extend or retract the barbs.
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Citations
22 Claims
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1. A method of anchoring a medical device to skin of a patient, the method comprising:
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inserting at least a portion of an elongate body through a dermis layer so that a subcutaneous anchor mechanism flexibly adjusts from an outwardly extending orientation to a first bent orientation in which free ends of the subcutaneous anchor mechanism extend toward a proximal end of the elongate body, wherein the elongate body comprises a body wall that at least partially defines a lumen to slideably receive a catheter and the subcutaneous anchor mechanism is coupled to the elongate body at a location proximal from a distal tip of the elongate body; and removing the elongate body from the dermis layer so that the subcutaneous anchor mechanism flexibly adjusts from a deployed orientation in a subcutaneous layer beneath the dermis layer to a second bent orientation in which the free ends of the subcutaneous anchor mechanism non-retractably extend toward the distal tip of the elongate body when the anchor mechanism exits through the dermis layer, wherein removing the elongate body so that the subcutaneous anchor mechanism flexibly adjusts comprises receiving at least one of the free ends of the anchor mechanism in at least one reduced-diameter portion formed in the body wall that extends distally of said at least one of the free ends to accommodate said at least one of the free ends when said at least one of the free ends is flexed distally toward the body wall of the elongate body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of anchoring a medical device to skin of a patient, the method comprising:
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inserting at least a portion of an elongate body through a dermis layer so that a subcutaneous anchor mechanism flexibly adjusts from an outwardly extending orientation to a first bent orientation in which free ends of the subcutaneous anchor mechanism extend toward a proximal end of the elongate body, wherein the elongate body comprises a body wall that at least partially defines a lumen to slideably receive a catheter and the subcutaneous anchor mechanism is coupled to the elongate body at a location proximal from a distal tip of the elongate body; advancing the elongate body through the dermis layer so that the free ends of the subcutaneous anchor mechanism flexibly adjust to a deployed orientation from the first bent orientation to anchor the subcutaneous anchor mechanism within a subcutaneous layer, wherein a portion of the free ends of the subcutaneous anchor mechanism abut an underside of the dermis layer when the free ends are in the deployed orientation; and removing the elongate body from the dermis layer so that the subcutaneous anchor mechanism flexibly adjusts from the deployed orientation in the subcutaneous layer beneath the dermis layer to a second bent orientation in which the free ends of the subcutaneous anchor mechanism non-retractably extend toward the distal tip of the elongate body when the anchor mechanism exits through the dermis layer, wherein removing the elongate body comprises receiving the free ends of the anchor mechanism in at least one surface reduced-diameter portion formed in the body wall of the elongate body when the free ends are flexed into the second bent orientation. - View Dependent Claims (19, 20, 21, 22)
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Specification