Catheter anchor system and method
First Claim
1. An implantable anchor system for an elongate implantable catheter used in intracranial delivery of therapeutic substances to a patient, the anchor system comprising:
- an anchor for mounting the catheter to the outer surface of the skull of the patient, the anchor including;
a body formed of generally flexible, elastomeric material that is adapted to flex and comply with adjacent tissue, the body having;
a through hole for receiving the catheter and orienting the catheter relative to the parenchyma,a channel, extending substantially from the through hole in a direction generally perpendicular to the through hole, into which a portion of the catheter may be inserted to retain the portion substantially parallel to the surface of the skull, wherein the channel is open along a slot formed in a top portion thereof through which the portion of the catheter may be inserted into the channel; and
at least one flange for engaging the outer surface of the skull, the flange including opposite major surfaces; and
at least one substantially rigid standoff mounted in the flange, the standoff including an opening and the standoff being exposed through the opposite major surfaces of the flange; and
a bone screw extending through the opening of the standoff for fastening the anchor to a surface of the skull.
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Accused Products
Abstract
A catheter system and method for intracranial infusion of therapeutic substances to a patient. An anchor formed of generally flexible, elastomeric material is used to mount the catheter to the outer surface of the skull of the patient. The anchor has a through hole for receiving the catheter, a channel, extending substantially from the through hole, into which a portion of the catheter may be inserted to retain the portion substantially parallel to the surface of the skull, and at least one flange for engaging the outer surface of the skull. An anchor clip may be provided to engage the anchor adjacent the through hole to further stabilize the catheter.
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Citations
24 Claims
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1. An implantable anchor system for an elongate implantable catheter used in intracranial delivery of therapeutic substances to a patient, the anchor system comprising:
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an anchor for mounting the catheter to the outer surface of the skull of the patient, the anchor including; a body formed of generally flexible, elastomeric material that is adapted to flex and comply with adjacent tissue, the body having; a through hole for receiving the catheter and orienting the catheter relative to the parenchyma, a channel, extending substantially from the through hole in a direction generally perpendicular to the through hole, into which a portion of the catheter may be inserted to retain the portion substantially parallel to the surface of the skull, wherein the channel is open along a slot formed in a top portion thereof through which the portion of the catheter may be inserted into the channel; and at least one flange for engaging the outer surface of the skull, the flange including opposite major surfaces; and
at least one substantially rigid standoff mounted in the flange, the standoff including an opening and the standoff being exposed through the opposite major surfaces of the flange; anda bone screw extending through the opening of the standoff for fastening the anchor to a surface of the skull. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A catheter system for intracranial delivery of therapeutic substances to a patient, the system comprising:
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an elongate catheter having a lumen and at least one drug delivery orifice in fluid communication with the lumen; an implantable anchor system comprising; an anchor for mounting the catheter to the outer surface of the skull of the patient, the anchor including; a body formed of generally flexible, elastomeric material, the body having; a through hole for receiving the catheter and orienting the catheter relative to the parenchyma, a channel, extending substantially from the through hole in a direction generally perpendicular to the through hole, into which a portion of the catheter may be inserted to retain the portion substantially parallel to the surface of the skull; and at least one flange for engaging the outer surface of the skull, the flange including opposite major surfaces; and at least one substantially rigid standoff mounted in the flange, the standoff including an opening and the standoff being exposed through the opposite major surfaces of the flange, wherein the standoff is substantially annular and having an opening for receiving a fastener to fasten the anchor to the skull, and an undercut or circumferential channel helping to retain the standoff in the flange; and a bone screw extending through the opening of the standoff for fastening the anchor to a surface of the skull. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An implantable anchor system for an elongate implantable catheter used in intracranial delivery of therapeutic substances to a patient, the anchor system comprising:
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an anchor for mounting the catheter to the outer surface of the skull of the patient, the anchor including; a body formed of generally flexible, elastomeric material that is adapted to flex and comply with adjacent tissue, the body having; a through hole for receiving the catheter and orienting the catheter relative to the parenchyma, a channel, extending substantially from the through hole in a direction generally perpendicular to the through hole, into which a portion of the catheter may be inserted to retain the portion substantially parallel to the surface of the skull, wherein the channel is open along a slot formed in a top portion thereof through which the portion of the catheter may be inserted into the channel; at least one flange for engaging the outer surface of the skull, the flange including opposite major surfaces; and a bone screw extending through the flange for fastening the anchor to a surface of the skull. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification