Anchor device and method
First Claim
Patent Images
1. A system for anchoring a medical device to skin of a patient, comprising:
- a tubular catheter configured to advance through a skin penetration point, the tubular catheter comprising a proximal end portion configured to reside external to the skin penetration point, a longitudinal axis, an inner lumen, and an outer tubular wall extending for a longitudinal length from the proximal end portion to a distal tip; and
a plurality of subcutaneous anchors fixed to and extending outwardly from the outer tubular wall of the tubular catheter at a position that is located proximally from the distal tip of the tubular catheter and that is located distally of the proximal end portion of the tubular catheter, the plurality of anchors being non-retractable and positioned outwardly from the outer tubular wall of the tubular catheter during insertion of the plurality of subcutaneous anchors through the skin penetration point, each of the plurality of anchors including a free end;
wherein the anchors are positionable between an insertion orientation when the tubular catheter is inserted into a subcutaneous layer and a removal orientation when the tubular catheter is withdrawn from the subcutaneous layer that is different from an insertion orientation, and wherein in the insertion orientation the plurality of subcutaneous anchors are positioned outwardly from the outer tubular wall of the tubular catheter and the free ends of the anchors extend towards a proximal direction, and in the removal orientation the plurality of subcutaneous anchors are positioned outwardly from the outer tubular wall of the tubular catheter and the free ends of the anchors extend towards a distal direction.
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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.
196 Citations
16 Claims
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1. A system for anchoring a medical device to skin of a patient, comprising:
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a tubular catheter configured to advance through a skin penetration point, the tubular catheter comprising a proximal end portion configured to reside external to the skin penetration point, a longitudinal axis, an inner lumen, and an outer tubular wall extending for a longitudinal length from the proximal end portion to a distal tip; and a plurality of subcutaneous anchors fixed to and extending outwardly from the outer tubular wall of the tubular catheter at a position that is located proximally from the distal tip of the tubular catheter and that is located distally of the proximal end portion of the tubular catheter, the plurality of anchors being non-retractable and positioned outwardly from the outer tubular wall of the tubular catheter during insertion of the plurality of subcutaneous anchors through the skin penetration point, each of the plurality of anchors including a free end; wherein the anchors are positionable between an insertion orientation when the tubular catheter is inserted into a subcutaneous layer and a removal orientation when the tubular catheter is withdrawn from the subcutaneous layer that is different from an insertion orientation, and wherein in the insertion orientation the plurality of subcutaneous anchors are positioned outwardly from the outer tubular wall of the tubular catheter and the free ends of the anchors extend towards a proximal direction, and in the removal orientation the plurality of subcutaneous anchors are positioned outwardly from the outer tubular wall of the tubular catheter and the free ends of the anchors extend towards a distal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for anchoring a medical device to skin of a patient, comprising:
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a tubular catheter configured to advance through a skin penetration point, the tubular catheter comprising a proximal end portion configured to reside external to the skin penetration point, a longitudinal axis, an inner lumen, and an outer tubular wall extending for a longitudinal length from the proximal end portion to a distal tip; and a plurality of subcutaneous anchors fixed to and extending outwardly from the outer tubular wall of the tubular catheter at a position that is located proximally from the distal tip of the tubular catheter and that is located distally of the proximal end portion of the tubular catheter, the plurality of anchors being non-retractable and positioned outwardly from the outer tubular wall of the tubular catheter during insertion of the plurality of subcutaneous anchors through the skin penetration point; wherein the anchors are positionable between an insertion orientation when the tubular catheter is inserted into a subcutaneous layer and a removal orientation when the tubular catheter is withdrawn from the subcutaneous layer that is different from an insertion orientation, and wherein in the insertion orientation and in the removal orientation the plurality of subcutaneous anchors are positioned outwardly from the outer tubular wall of the tubular catheter; wherein each of the subcutaneous anchors extend outwardly in a convexly curved shape when the subcutaneous anchors are deployed in the subcutaneous layer along an underside of the skin layer; and wherein each of the plurality of anchors include a free end, and wherein in the insertion orientation the free ends of the anchors extend towards a proximal direction, and in the removal orientation the free ends of the anchors extend towards a distal direction. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A system for anchoring a medical device to skin of a patient, comprising:
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a tubular catheter configured to advance through a skin penetration point, the tubular catheter comprising a proximal end portion configured to reside external to the skin penetration point, a longitudinal axis, an inner lumen, and an outer tubular wall extending for a longitudinal length from the proximal end portion to a distal tip; and a plurality of subcutaneous anchors fixed to and extending outwardly from the outer tubular wall of the tubular catheter at a position that is located proximally from the distal tip of the tubular catheter and that is located distally of the proximal end portion of the tubular catheter, the plurality of anchors being non-retractable and positioned outwardly from the outer tubular wall of the tubular catheter during insertion of the plurality of subcutaneous anchors through the skin penetration point; wherein the anchors are positionable between an insertion orientation when the tubular catheter is inserted into a subcutaneous layer and a removal orientation when the tubular catheter is withdrawn from the subcutaneous layer that is different from an insertion orientation, and wherein in the insertion orientation and in the removal orientation the plurality of subcutaneous anchors are positioned outwardly from the outer tubular wall of the tubular catheter; wherein the plurality of subcutaneous anchors are configured to provide a holding force of about 2 lbs. to about 3 lbs. when the plurality of subcutaneous anchors secure the tubular catheter in the subcutaneous layer; and wherein each of the plurality of anchors include a free end, and wherein in the insertion orientation the free ends of the anchors extend towards a proximal direction, and in the removal orientation the free ends of the anchors extend towards a distal direction.
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Specification