Anchor systems and methods
First Claim
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1. An anchor system for securing a medical instrument, comprising:
- a retainer body to releasably couple with a catheter configured for insertion through a skin penetration point;
a plurality of flexible anchors coupled to the retainer body and being configured to extend distally from a distal end of the retainer body, each anchor comprising a flexible tine that is deployable in a subcutaneous region adjacent to a skin layer to secure the retainer body relative to the skin penetration point; and
a retention member coupled to the retainer body so that the retention member directly engages an outer circumferential surface of the catheter when the retainer body couples with the catheter, wherein the retention member at least partially defines a gripping channel configured to at least partially surround the outer circumferential surface of the catheter when the retention member engages the catheter, wherein the gripping channel is at least partially defined by a wall comprising a compliant gripping material to press against the outer circumferential surface of the catheter when the retention member engages the catheter,wherein the flexible tines of the plurality of flexible anchors are positioned distal to the distal end of the retainer body for deployment in the subcutaneous region adjacent to the skin layer.
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Abstract
Some embodiments of a medical device anchor system include an anchor device that receives a medical instrument (such as a catheter or the like) and secures the instrument in place relative to a skin penetration point. In some circumstances, the anchor device may allow the anchor device to be used after medical instrument is already in place without the need for a second penetration point for the anchor device.
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Citations
29 Claims
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1. An anchor system for securing a medical instrument, comprising:
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a retainer body to releasably couple with a catheter configured for insertion through a skin penetration point; a plurality of flexible anchors coupled to the retainer body and being configured to extend distally from a distal end of the retainer body, each anchor comprising a flexible tine that is deployable in a subcutaneous region adjacent to a skin layer to secure the retainer body relative to the skin penetration point; and a retention member coupled to the retainer body so that the retention member directly engages an outer circumferential surface of the catheter when the retainer body couples with the catheter, wherein the retention member at least partially defines a gripping channel configured to at least partially surround the outer circumferential surface of the catheter when the retention member engages the catheter, wherein the gripping channel is at least partially defined by a wall comprising a compliant gripping material to press against the outer circumferential surface of the catheter when the retention member engages the catheter, wherein the flexible tines of the plurality of flexible anchors are positioned distal to the distal end of the retainer body for deployment in the subcutaneous region adjacent to the skin layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An anchor system for securing a medical instrument, comprising:
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a retainer body to releasably couple to a catheter that occupies a skin penetration point, wherein the retainer body includes an adjustable retention member that directly engages an outer circumferential surface of the catheter when the retainer body releasably couples to the catheter; and first and second flexible anchors coupled to the retainer body and being configured to extend distally from a distal end of the retainer body, the first flexible anchor comprising a first subcutaneous tine and the second flexible anchor comprising a second subcutaneous tine, the first and second subcutaneous tines being deployable in a subcutaneous region adjacent to a skin layer to secure the retainer body relative to the skin penetration point, wherein the first and second subcutaneous tines are positioned distal to the distal end of the retainer body when deployable in the subcutaneous region adjacent to the skin layer, wherein the first and second flexible anchors extend distally from the distal end of the retainer body such that the first and second flexible anchors are configured to deploy into the skin penetration point occupied by the catheter while the retainer body resides fully external to the skin penetration point. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. An anchor system for securing a medical instrument, comprising:
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a retainer body to releasably couple to a catheter that occupies a skin penetration point, wherein the retainer body includes an removable retention member that releasably mates with extension elements of the retainer body and that frictionally engages with at least a portion of an outer circumferential surface of the catheter when the retainer body releasably couples to the catheter; and first and second flexible anchors coupled to the retainer body and being configured to extend distally from a distal end of the retainer body, the first flexible anchor comprising a first subcutaneous tine and the second flexible anchor comprising a second subcutaneous tine, the first and second subcutaneous tines being deployable in a subcutaneous region adjacent to a skin layer to secure the retainer body relative to the skin penetration point, wherein the first and second subcutaneous tines are positioned distal to the distal end of the retainer body when deployable in the subcutaneous region adjacent to the skin layer, wherein the first and second flexible anchors are positioned distally from the distal end of the retainer body such that the first and second flexible anchors are configured to deploy into the skin penetration point occupied by the catheter while the retainer body resides fully external to the skin penetration point. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification