Apparatus and methods for providing selectively adjustable blood flow through a vascular graft
First Claim
1. Apparatus for for monitoring or controlling an implantable device via a subcutaneous access port, the apparatus comprising:
- an electrical access port adapted for subcutaneous implantation in an animal, the electrical access port comprising;
a body defining a chamber, an aperture and at least one suture hole;
a septum extending across the aperture;
a first plurality of electrical contacts disposed within the chamber; and
means for electrically coupling the first plurality of electrical contacts to the implantable device; and
a first needle comprising;
a cylindrical member;
a non-coring tip adapted to traverse tissue and pierce the septum; and
a second plurality of electrical contacts disposed on the cylindrical member and adapted to electrically couple to respective ones of the first plurality of electrical contacts; and
means for electrically coupling the second plurality of electrical contacts to external circuitry.
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Accused Products
Abstract
Apparatus for adjusting blood flow through a graft is provided comprising a balloon disposed against the exterior surface of the graft by a substantially rigid sheath, so that when the balloon is inflated with an inflation medium it causes constriction of blood flow through the graft without creating potentially thrombogenic crimps or infolds in the graft material. The balloon is adjusted by connecting an infusion device to a subcutaneously implanted balloon access port. A pair of ultrasonic elements may be optionally provided to measure blood flow through the graft and to optimize the extent of constriction of the graft. Electrical connection between the ultrasonic elements and external ultrasound processing circuitry is established via a subcutaneously implanted electrical access port that enables multiple electrical connections to be made using a single needle stick.
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Citations
20 Claims
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1. Apparatus for for monitoring or controlling an implantable device via a subcutaneous access port, the apparatus comprising:
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an electrical access port adapted for subcutaneous implantation in an animal, the electrical access port comprising; a body defining a chamber, an aperture and at least one suture hole; a septum extending across the aperture;
a first plurality of electrical contacts disposed within the chamber; andmeans for electrically coupling the first plurality of electrical contacts to the implantable device; and a first needle comprising; a cylindrical member; a non-coring tip adapted to traverse tissue and pierce the septum; and a second plurality of electrical contacts disposed on the cylindrical member and adapted to electrically couple to respective ones of the first plurality of electrical contacts; and means for electrically coupling the second plurality of electrical contacts to external circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Apparatus for monitoring or controlling an implantable device adapted to be coupled to an external device via a subcutaneous access port, the apparatus comprising:
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a first access port adapted for subcutaneous implantation comprising; a body defining a chamber, an aperture and at least one suture hole; a septum extending across the aperture; a first plurality of electrical contacts disposed within the chamber, the first plurality of electrical contacts coupled to the implantable device; and a first needle comprising; an elongated member having a non-coring tip adapted to traverse tissue and pierce the septum of the first access port; and a second plurality of electrical contacts disposed on the needle and adapted to electrically couple to respective ones of the first plurality of electrical contacts, the second plurality of electrical contacts coupled to the external device. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification