Socketed Portal Anchors and Methods of Using Same
First Claim
1. An anchor configured to secure a medical device implanted via a portal formed in a mammalian body, the anchor comprising:
- a base operable 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 of the base, the opening forming a socket; and
a retention member configured to be received within the socket, the retention member defining a bore configured to permit passage with clearance of the medical device through the retention member when the retention member is in an uncompressed state;
the base configured for movement between;
an expanded configuration, corresponding to the retention member being in the uncompressed state, wherein clearance or minimal contact exists between the socket and the retention member such that the retention member is selectively rotatable within the socket; and
a locked configuration wherein the socket contracts and compresses the retention member to a compressed state, wherein the retention member is immobilized relative to the base when in the compressed state.
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 wherein the socket may be collapsed to lock the spherical member along a particular trajectory.
41 Citations
21 Claims
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1. An 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 operable 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 of the base, the opening forming a socket; and a retention member configured to be received within the socket, the retention member defining a bore configured to permit passage with clearance of the medical device through the retention member when the retention member is in an uncompressed state; the base configured for movement between; an expanded configuration, corresponding to the retention member being in the uncompressed state, wherein clearance or minimal contact exists between the socket and the retention member such that the retention member is selectively rotatable within the socket; and a locked configuration wherein the socket contracts and compresses the retention member to a compressed state, wherein the retention member is immobilized relative to the base when in the compressed state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A burr hole anchor configured to secure a medical device implanted through a burr hole, the anchor comprising:
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a base operable 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 of the base, the opening forming a socket, wherein the base defines a slot extending radially from the socket through the outer edge to define spaced-apart first and second portions of the base; and an elastomeric spherical member configured to be received within the socket such that the spherical member, when in an uncompressed state, may rotate therein about three mutually perpendicular axes, the spherical member defining a bore configured to permit passage with clearance of the medical device through the spherical member when the spherical member is in the uncompressed state; wherein the base is configurable in; an expanded configuration, corresponding to the spherical member being in the uncompressed state, wherein either clearance or minimal contact exists between the socket and the spherical member such that the spherical member is selectively rotatable within the socket; and a locked configuration wherein the socket contracts and compresses the spherical member to a compressed state, wherein, when in the compressed state, the spherical member is immobilized relative to the base; the base being reconfigurable between the expanded configuration and the locked configuration by movement of the first portion of the base toward the second portion of the base. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. 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 operable to secure to tissue 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 of the base, the opening forming a socket; and a retention member configured to be received within the socket, the retention member defining a bore configured to permit passage with clearance of the therapy catheter through the retention member when the retention member is in an uncompressed state; the base configured for movement between; an expanded configuration, corresponding to the retention member being in the uncompressed state, wherein clearance or minimal contact exists between the socket and the retention member such that the retention member is selectively rotatable within the socket; and a locked configuration wherein the socket contracts and compresses the retention member to a compressed state, wherein the retention member is immobilized relative to the base when in the compressed state. - View Dependent Claims (20, 21)
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Specification