Medical devices subject to triggered disintegration
First Claim
1. A medical device comprising at least one member selected from the group consisting of stents, catheters, cannulas, plugs and constrictors, wherein said medical device comprises ionically crosslinked polymer and has sufficient mechanical strength to serve as a stent, catheter, cannula, plug or constrictor.
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Accused Products
Abstract
The present invention provides medical devices comprised of ionically crosslinked polymer, especially, stents, catheter or cannula components, plugs, and constrictors. The medical devices of the present invention are prepared by treatment of ionically crosslinkable polymer compositions with crosslinking ion compositions to provide ionically crosslinked materials.
An important aspect of the present invention is that these medical devices can be disintegrated in-vivo at a desired time through the exposure of the medical device to a chemical trigger which generally is described as an agent that acts to displace the crosslinking ion in the ionically crosslinked material through binding or simple replacement with a non-crosslinking ion.
281 Citations
105 Claims
- 1. A medical device comprising at least one member selected from the group consisting of stents, catheters, cannulas, plugs and constrictors, wherein said medical device comprises ionically crosslinked polymer and has sufficient mechanical strength to serve as a stent, catheter, cannula, plug or constrictor.
- 25. A medical device comprising at least one member selected from the group consisting of stents, catheters, cannulas, plugs, and constrictors, wherein said medical device comprises ionically crosslinked polymer in combination with an agent that displaces a crosslinking ion, and has sufficient mechanical strength to serve as a stent, catheter, cannula, plug or constrictor.
- 54. A medical device comprising at least one member selected from the group consisting of stents, catheters, cannulas, plugs, and constrictors, wherein said medical device comprises ionically crosslinked polymer hydrogel having a water content of less than 90% and has sufficient mechanical strength to serve as a stent, catheter, cannula, plug or constrictor.
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82. A medical device comprising at least one member selected from the group consisting of stents, catheters, cannulas, plugs, and constrictors, wherein said medical device comprises ionically crosslinked polymer and is sterilizable at temperatures of at least 121°
- C., and wherein said medical device has sufficient mechanical strength to serve as a stent, catheter, cannula, plug or constrictor.
- View Dependent Claims (83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105)
Specification