Polyisobutylene urethane, urea and urethane/urea copolymers and medical devices containing the same
First Claim
1. A method for making an implantable or insertable medical device including a polyisobutylene urethane, urea or urethane/urea copolymer, the method comprising:
- reacting a diisocyanate, a polyisobutylene polyol or polyamine and a polyether diol to form a polyisobutylene urethane, urea or urethane/urea copolymer; and
forming at least a portion of an implantable or insertable medical device from the polyisobutylene urethane, urea or urethane/urea copolymer,wherein the molar amount of the polyisobutylene reacted with the polyether diol is greater than or equal to the molar amount of polyether diol.
0 Assignments
0 Petitions
Accused Products
Abstract
The present invention pertains to polyisobutylene urethane, urea and urethane/urea copolymers, to methods of making such copolymers and to medical devices that contain such polymers. According to certain aspects of the invention, polyisobutylene urethane, urea and urethane/urea copolymers are provided, which comprise a polyisobutylene segment, an additional polymeric segment that is not a polyisobutylene segment, and a segment comprising a residue of a diisocyanate. According to other aspects of the invention, polyisobutylene urethane, urea and urethane/urea copolymers are provided, which comprise a polyisobutylene segment and end groups that comprise alkyl-, alkenyl- or alkynyl-chain-containing end groups.
-
Citations
17 Claims
-
1. A method for making an implantable or insertable medical device including a polyisobutylene urethane, urea or urethane/urea copolymer, the method comprising:
-
reacting a diisocyanate, a polyisobutylene polyol or polyamine and a polyether diol to form a polyisobutylene urethane, urea or urethane/urea copolymer; and forming at least a portion of an implantable or insertable medical device from the polyisobutylene urethane, urea or urethane/urea copolymer, wherein the molar amount of the polyisobutylene reacted with the polyether diol is greater than or equal to the molar amount of polyether diol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An implantable or insertable medical device comprising:
a polyisobutylene urethane, urea or urethane/urea copolymer comprising; a residue of a diisocyanate; a residue of a polyisobutylene polyol or polyamine; and a residue of a polyether diol, wherein a molar amount of the polyisobutylene is greater than the molar amount of polyether diol. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
Specification