Compositions and systems for forming crosslinked biomaterials and associated methods of preparation and use
First Claim
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1. A kit for use in medical applications, comprising:
- (a) a dry powder composition comprisingi. a first component having a first hydrophilic polymer core substituted with m thiol groups, where m≧
2; and
ii. a second component having a second hydrophilic polymer core substituted with n electrophilic groups, where n≧
2 and m+n>
4, and wherein the electrophilic group is independently —
(CO)—
O—
(CO)—
R (where R is an alkyl group), CH═
CH—
CH═
O, —
CH═
CH—
C(CH3)═
O, —
N═
C═
O, —
N═
C═
S, —
SO2CH═
CH2, —
O(CO)—
C═
CH2, —
O(CO)—
C(CH3)═
CH2, —
S—
S—
(C5H4N), —
O(CO)—
C(CH2CH3)═
CH2, —
CH═
CH—
C═
NH, —
COOH, —
(CO)O—
N(COCH2)2, —
O—
(CO)—
O—
N(COCH2)2, —
CHO, —
(CO)O—
N(COCH2)2—
S(O)2OH, and —
N(COCH)2;
(b) a first solution having a pH within the range of about 2.1-2.3, and being configured to be mixed with (a) to provide a homogeneous solution of (a) and (b); and
(c) a second solution having a pH within the range of about 6.0 to 11.0 and being configured to be mixed with the homogeneous solution of (a) and (b),wherein the thiol group and the electrophilic groups are non-reactive in a dry environment, and wherein each of (a), (b) and (c) is packaged separately and admixed immediately prior to use.
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Abstract
Kits comprising dry power compositions are provided that readily crosslink in situ to provide crosslinked biomaterials. The dry powder composition contains at least two biocompatible, non-immunogenic components having reactive groups thereon, with the functional groups selected so as to enable inter-reaction between the components, i.e., crosslinking. Exemplary uses for the crosslinked biomaterials include tissue augmentation, biologically active agent delivery, bioadhesion, and prevention of adhesions following surgery or injury.
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Citations
23 Claims
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1. A kit for use in medical applications, comprising:
-
(a) a dry powder composition comprising i. a first component having a first hydrophilic polymer core substituted with m thiol groups, where m≧
2; andii. a second component having a second hydrophilic polymer core substituted with n electrophilic groups, where n≧
2 and m+n>
4, and wherein the electrophilic group is independently —
(CO)—
O—
(CO)—
R (where R is an alkyl group), CH═
CH—
CH═
O, —
CH═
CH—
C(CH3)═
O, —
N═
C═
O, —
N═
C═
S, —
SO2CH═
CH2, —
O(CO)—
C═
CH2, —
O(CO)—
C(CH3)═
CH2, —
S—
S—
(C5H4N), —
O(CO)—
C(CH2CH3)═
CH2, —
CH═
CH—
C═
NH, —
COOH, —
(CO)O—
N(COCH2)2, —
O—
(CO)—
O—
N(COCH2)2, —
CHO, —
(CO)O—
N(COCH2)2—
S(O)2OH, and —
N(COCH)2;(b) a first solution having a pH within the range of about 2.1-2.3, and being configured to be mixed with (a) to provide a homogeneous solution of (a) and (b); and (c) a second solution having a pH within the range of about 6.0 to 11.0 and being configured to be mixed with the homogeneous solution of (a) and (b), wherein the thiol group and the electrophilic groups are non-reactive in a dry environment, and wherein each of (a), (b) and (c) is packaged separately and admixed immediately prior to use. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification