Socketed Portal Anchors and Methods of Using Same
First Claim
1. A sub-dermal anchor configured to secure a medical device implanted via a portal formed in a mammalian body, the anchor comprising:
- a base configured to secure to tissue surrounding the portal, the base comprising an upper side, lower side, outer edge, and inner edge, the inner edge defining an opening passing between the upper and lower sides, the opening forming a socket; and
an elastomeric retention member comprising a spherical surface, the retention member configured to be received within the socket such that the retention member may rotate therein about three mutually perpendicular axes, the retention member defining a bore formed therethrough, the bore configured to permit passage of the medical device through the base from the upper side to the lower side;
wherein the retention member is positioned within the socket such that an uppermost surface of the retention member is at an elevation below the upper side of the base.
1 Assignment
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Accused Products
Abstract
Anchors for securing a medical device relative to a body portal, wherein the anchors may accommodate most any implantation trajectory through the portal. Such anchors may further secure the device along any such trajectory without imparting undesirable biasing forces that may shift the device from its intended implanted location. In some embodiments, the anchor is configured as a burr hole anchor including a spherical member contained in a socket of the anchor such that orientation of the spherical member is permitted about three mutually perpendicular axes.
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Citations
36 Claims
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1. A sub-dermal anchor configured to secure a medical device implanted via a portal formed in a mammalian body, the anchor comprising:
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a base configured to secure to tissue surrounding the portal, the base comprising an upper side, lower side, outer edge, and inner edge, the inner edge defining an opening passing between the upper and lower sides, the opening forming a socket; and an elastomeric retention member comprising a spherical surface, the retention member configured to be received within the socket such that the retention member may rotate therein about three mutually perpendicular axes, the retention member defining a bore formed therethrough, the bore configured to permit passage of the medical device through the base from the upper side to the lower side;
wherein the retention member is positioned within the socket such that an uppermost surface of the retention member is at an elevation below the upper side of the base. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A burr hole anchor configured to secure a medical device implanted through a burr hole, the anchor comprising:
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a base configured to secure to bone surrounding the burr hole, the base comprising an upper side, lower side, outer edge, and inner edge, the inner edge defining an opening passing between the upper and lower sides, wherein the opening forms a socket; and an elastomeric spherical member configured to be received within the socket such that the spherical member may rotate therein, the spherical member defining a bore formed therethrough, the bore configured to permit passage of the medical device through the base from the upper side to the lower side, the spherical member configured to immobilize the medical device via application of a radial compression force applied to the medical device. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for anchoring a medical device relative to a body portal of a patient, the method comprising:
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aligning a guide cannula with the body portal such that a trajectory of the guide cannula intersects a target tissue location within the patient; inserting a distal tip of the guide cannula through a bore formed in a portal anchor and sliding the portal anchor along the guide cannula, the anchor comprising; a base configured to secure to tissue surrounding the portal, the base comprising an upper side, lower side, outer edge, and inner edge, the inner edge defining an opening passing between the upper and lower sides, the opening forming a socket; and an elastomeric spherical member configured to be received within the socket such that the spherical member may rotate therein about three mutually perpendicular axes, the spherical member defining the bore for receiving the guide cannula; positioning the guide cannula so that the distal tip is inside the body portal; sliding the anchor towards the distal tip of the guide cannula until the base of the anchor reaches the tissue surrounding the body portal; rotating the spherical member relative to the base until the base is flush with the tissue surrounding the body portal; and attaching the base to the tissue. - View Dependent Claims (23, 24, 25, 26, 27)
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28. An infusion system comprising:
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a therapy catheter implantable through a burr hole, the therapy catheter comprising a therapy delivery end configured to be positioned at a target tissue location; a delivery catheter operable to deliver a therapeutic agent, from a source containing the therapeutic agent, to the therapy catheter; a connector configured to fluidly couple the therapy catheter with the delivery catheter; and an anchor comprising; a base configured to secure to bone surrounding the burr hole, the base comprising an upper side, lower side, outer edge, and inner edge, the inner edge defining an opening passing between the upper and lower sides, the opening forming a socket; and a spherical member configured to be received within the socket such that the spherical member may rotate therein about three mutually perpendicular axes, the spherical member defining a bore formed therein, the bore configured to receive both a first end of the therapy catheter and a first end of the connector when the first end of the connector is fluidly coupled to the therapy catheter. - View Dependent Claims (29, 30, 31, 32, 33)
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34. An infusion system comprising:
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a therapy catheter implantable through a burr hole, the therapy catheter comprising a therapy delivery end configured to be positioned at a target tissue location; a delivery catheter operable to deliver a therapeutic agent, from a source containing the therapeutic agent, to the therapy catheter; a connector configured to fluidly couple the therapy catheter with the delivery catheter; and an anchor comprising; a base configured to secure to bone surrounding the burr hole, the base comprising an upper side, lower side, outer edge, and inner edge, the inner edge defining an opening passing between the upper and lower sides, wherein the opening forms a socket; and an elastomeric spherical member configured to be received within the socket such that the spherical member may rotate therein, the spherical member defining a bore formed therethrough, the bore configured to permit passage of the therapy catheter through the base from the upper side to the lower side, the spherical member configured to immobilize the therapy catheter via application of a radial compression force applied to the therapy catheter. - View Dependent Claims (35, 36)
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Specification