Anchor device and method
First Claim
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1. An anchor device, comprising:
- an elongate body having a body wall that at least partially defines a lumen extending to a distal tip to slideably receive a catheter therein; and
a subcutaneous anchor mechanism coupled to the elongate body at a location proximal from the distal tip of the elongate body, the subcutaneous anchor mechanism having a plurality of non-retractable barbs that extend away from the body wall to abut a dermis layer when in a deployed orientation in a subcutaneous layer, each of the non-retractable barbs having a free end that is biased to extend outwardly away from the body wall, wherein the plurality of non-retractable barbs are integrally formed with one another as a unitary structure,wherein the non-retractable barbs are flexibly bendable to a removal orientation that is different from an insertion orientation when the anchor mechanism is withdrawn from the subcutaneous layer and out through the dermis layer, andwherein the body wall defines a reduced-diameter portion that extends distally of at least one barb to receive the free end of said at least one barb when said at least one barb is flexed distally toward the body wall so as to maintain an outer dimension of the body wall during withdrawal through the dermis layer.
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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
19 Claims
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1. An anchor device, comprising:
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an elongate body having a body wall that at least partially defines a lumen extending to a distal tip to slideably receive a catheter therein; and a subcutaneous anchor mechanism coupled to the elongate body at a location proximal from the distal tip of the elongate body, the subcutaneous anchor mechanism having a plurality of non-retractable barbs that extend away from the body wall to abut a dermis layer when in a deployed orientation in a subcutaneous layer, each of the non-retractable barbs having a free end that is biased to extend outwardly away from the body wall, wherein the plurality of non-retractable barbs are integrally formed with one another as a unitary structure, wherein the non-retractable barbs are flexibly bendable to a removal orientation that is different from an insertion orientation when the anchor mechanism is withdrawn from the subcutaneous layer and out through the dermis layer, and wherein the body wall defines a reduced-diameter portion that extends distally of at least one barb to receive the free end of said at least one barb when said at least one barb is flexed distally toward the body wall so as to maintain an outer dimension of the body wall during withdrawal through the dermis layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A subcutaneous anchor mechanism, comprising:
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a base attachable to a medical device; and at least one non-retractable barb coupled to the base at a location proximal from a distal tip of the base, the non-retractable barb having a free end that is biased to extend outwardly from the base such that, when the base is attached to the medical device, the non-retractable barb extends away from the medical device to abut a dermis layer when in a deployed orientation in a subcutaneous layer, wherein the non-retractable barb is flexibly bendable toward the base to a removal orientation such that the free end extends distally and is adjacent to the base when the non-retractable barb is withdrawn from the subcutaneous layer and out through the dermis layer, and wherein the base defines a reduced-diameter portion that extends distally of at the non-retractable barb to receive the free end of the non-retractable barb when the non-retractable barb is flexed distally toward the base so as to maintain an outer dimension of the base during withdrawal through the dermis layer. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification