Seeding implantable medical devices with cells
First Claim
1. A method for seeding cells on a luminal surface of an implantable medical device, the method comprising:
- providing an implantable medical device having a lumen and a luminal surface, and wherein the lumen defines a longitudinal axis;
centrifuging blood to obtain a blood centrifugation product comprising blood plasma;
applying a preparation media comprising calcium to the luminal surface of the implantable medical device;
subsequent to applying the preparation media, applying the blood centrifugation product to the luminal surface of the implantable medical device;
subsequent to applying the blood centrifugation product, introducing cells into the lumen of the implantable medical device; and
axially centrifuging the implantable medical device by rotating the implantable medical device substantially around the longitudinal axis at a rate sufficient to generate between 1 g and 1000 g of centripetal acceleration on the cells, thereby seeding the cells on the luminal surface of the implantable medical device.
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Accused Products
Abstract
Apparatus and methods for seeding an implantable medical device, such as a vascular prosthesis, with cells, such as endothelial cells, are described. The invention supports techniques for seeding a luminal surface of the device with axial centrifugation. Cells are introduced in suspension into the lumen of the device. The introduction of the cells may occur after a blood centrifugation product, such as platelet-poor plasma, is applied to the luminal surface. After the cells are introduced, the device is then subjected to centrifugation around a longitudinal axis defined by the lumen. Axial centrifugation causes the cells to concentrate toward and adhere to the luminal surface. Shortly after axial centrifugation, the seeded device can be presented for implantation in a patient. The implantable medical device may be inserted into a protective sleeve prior to seeding the device with cells, and the sleeve may or may not be removed prior to implantation.
87 Citations
10 Claims
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1. A method for seeding cells on a luminal surface of an implantable medical device, the method comprising:
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providing an implantable medical device having a lumen and a luminal surface, and wherein the lumen defines a longitudinal axis; centrifuging blood to obtain a blood centrifugation product comprising blood plasma; applying a preparation media comprising calcium to the luminal surface of the implantable medical device; subsequent to applying the preparation media, applying the blood centrifugation product to the luminal surface of the implantable medical device; subsequent to applying the blood centrifugation product, introducing cells into the lumen of the implantable medical device; and axially centrifuging the implantable medical device by rotating the implantable medical device substantially around the longitudinal axis at a rate sufficient to generate between 1 g and 1000 g of centripetal acceleration on the cells, thereby seeding the cells on the luminal surface of the implantable medical device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification