Apparatus for securing a therapy delivery device within a burr hole
First Claim
1. An apparatus for anchoring a therapy delivery device relative to a burr hole, the apparatus comprising:
- a base operable to seat in or near the burr hole, the base comprising a peripheral portion at least partially surrounding a central opening, the peripheral portion defining a flange portion having an outer diameter larger than the burr hole such that the flange portion is operable to rest upon a cranial surface surrounding the burr hole; and
a disk-shaped stabilizer positionable within the central opening, the stabilizer comprising a peripheral edge and opposing first and second inner surfaces that define a slot extending through the peripheral edge of the stabilizer, the first inner surface comprising a movable arm having a cantilevered end, the movable arm lockable in a first position corresponding to the first inner surface being substantially parallel to the second inner surface, wherein, when the movable arm is locked in the first position, the first and second inner surfaces are separated by a distance that is about 2% to about 50% less than an undeflected external dimension of a therapy delivery device positioned between the first and second inner surfaces such that the first and second inner surfaces engage the therapy delivery device with interference at substantially any location along a length of the slot, and wherein the movable arm comprises a ball portion operable to interlock with a socket portion of the stabilizer when the movable arm is in the first position.
1 Assignment
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Accused Products
Abstract
Apparatus and methods for securing a therapy delivery device relative to a burr hole. In one embodiment, the apparatus includes a base that is securable to bone, without the use of fasteners, either before or after insertion of the therapy delivery device into the burr hole. The apparatus may further include a stabilizer that may be engaged with both the base and the therapy delivery device while the delivery device is held with positioning apparatus. The base and/or stabilizer may frictionally engage the delivery device, e.g., receive it with interference, to secure the device in two or more non-parallel directions. In some embodiments, at least the stabilizer may include a surface coating or treatment operable to enhance frictional engagement with the therapy delivery device.
136 Citations
31 Claims
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1. An apparatus for anchoring a therapy delivery device relative to a burr hole, the apparatus comprising:
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a base operable to seat in or near the burr hole, the base comprising a peripheral portion at least partially surrounding a central opening, the peripheral portion defining a flange portion having an outer diameter larger than the burr hole such that the flange portion is operable to rest upon a cranial surface surrounding the burr hole; and a disk-shaped stabilizer positionable within the central opening, the stabilizer comprising a peripheral edge and opposing first and second inner surfaces that define a slot extending through the peripheral edge of the stabilizer, the first inner surface comprising a movable arm having a cantilevered end, the movable arm lockable in a first position corresponding to the first inner surface being substantially parallel to the second inner surface, wherein, when the movable arm is locked in the first position, the first and second inner surfaces are separated by a distance that is about 2% to about 50% less than an undeflected external dimension of a therapy delivery device positioned between the first and second inner surfaces such that the first and second inner surfaces engage the therapy delivery device with interference at substantially any location along a length of the slot, and wherein the movable arm comprises a ball portion operable to interlock with a socket portion of the stabilizer when the movable arm is in the first position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. An apparatus for anchoring a therapy delivery device, the apparatus comprising:
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a base operable to seat in or near a burr hole, the base comprising;
a peripheral portion at least partially surrounding a central opening, the peripheral portion defining a flange portion having an outer diameter larger than the burr hole such that the flange portion is configured to rest upon a cranial surface surrounding the burr hole; and
a ring-shaped engagement portion for receipt within the burr hole when the flange portion rests upon the cranial surface; anda disk-shaped stabilizer to seat within the central opening, the stabilizer comprising a peripheral edge and opposing first and second inner surfaces that define a radial slot extending outwardly through the peripheral edge of the stabilizer, the first inner surface comprising a movable, cantilevered arm having a free end, the arm lockable in a first position corresponding to the first inner surface being substantially parallel to, and spaced-apart from, the second inner surface, wherein, when the arm is locked in the first position, the first and second inner surfaces are positioned to frictionally engage a catheter passing orthogonally between the first and second inner surfaces at any location along a length of the slot, the first and second inner surfaces configured to frictionally engage the catheter without occluding catheter flow, and wherein the free end of the arm comprises a ball portion operable to interlock with a socket portion of the stabilizer when the arm is in the first position. - View Dependent Claims (29, 30, 31)
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Specification