Renewable neural implant device and method
First Claim
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1. A refillable immunoisolatory therapeutic device for implantation through a human skull and into a human brain, comprising:
- an outer flexible cell chamber adapted for containing viable cells which secrete at least one biologically active factor, the outer cell chamber having a first end connected to a cap, a second end for positioning within the brain, and at least one semipermeable surface across which the active factor secreted by the viable cells can be delivered at ambient pressure to the brain, the cell chamber being adapted for infusion with the viable cells and for protecting the cells from immunogens,an inner flushing duct with a proximal end and a distal end, the distal end open to the second end of the cell chamber,the cap adapted to engage an anchoring means, for anchoring the cell chamber and the inner flushing duct to the human skull, the cap having accessing means for accessing the cell chamber and the inner flushing duct to introduce, flush and renew the viable cells,the accessing means comprising an inner flushing duct port and an outer cell chamber port, the flushing duct port in fluid communication with the proximal end of the inner flushing duct, and the outer cell chamber port in fluid communication with the first end of the outer cell chamber,a mandrel to protect the cell chamber.
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Abstract
Refillable immunoisolatory neurological therapy devices for local and controlled delivery of a biologically active factor to the brain of a patient. The devices include a cell chamber adapted for infusion with nsecretory cells and having at least one semipermeable or permselective surface across which biologically active factors secreted by the cells can be delivered to the brain. The devices also include means for introducing secretory cells into the cell chamber, and means for renewing the cells or cell medium.
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Citations
29 Claims
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1. A refillable immunoisolatory therapeutic device for implantation through a human skull and into a human brain, comprising:
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an outer flexible cell chamber adapted for containing viable cells which secrete at least one biologically active factor, the outer cell chamber having a first end connected to a cap, a second end for positioning within the brain, and at least one semipermeable surface across which the active factor secreted by the viable cells can be delivered at ambient pressure to the brain, the cell chamber being adapted for infusion with the viable cells and for protecting the cells from immunogens, an inner flushing duct with a proximal end and a distal end, the distal end open to the second end of the cell chamber, the cap adapted to engage an anchoring means, for anchoring the cell chamber and the inner flushing duct to the human skull, the cap having accessing means for accessing the cell chamber and the inner flushing duct to introduce, flush and renew the viable cells, the accessing means comprising an inner flushing duct port and an outer cell chamber port, the flushing duct port in fluid communication with the proximal end of the inner flushing duct, and the outer cell chamber port in fluid communication with the first end of the outer cell chamber, a mandrel to protect the cell chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A refillable immunoisolatory therapeutic device for implantation through a human skull and into a human brain, comprising:
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a flexible cell chamber adapted for containing viable cells which secrete at least one biologically active factor, the cell chamber comprising a first end, a second end for positioning within the brain, a cell chamber exterior wall surface, and at least one semipermeable surface in the second end, across which the active factor secreted by the viable cells can be delivered to the brain, the cell chamber being adapted for infusion with the viable cells and for protecting the viable cells from immunogens; the cell chamber constructed as a U-tube with the open free ends of the U-tube connected at the first end of the cell chamber to a cap, the cap adapted to engage a skull anchoring means, for anchoring the cell chamber to a human skull, the cap having accessing means comprising at least one port in fluid communication with at least one free end of the U-tube to introduce, flush and renew the viable cells, a substantially rigid mandrel adapted to engage at least a portion of the cell chamber exterior wall surface during implantation in the brain, wherein the mandrel engages at least a portion of the cell chamber exterior wall surface during implantation and the mandrel being removable through a insertion port in the cap after implantation. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification