Joining tissues with composition of bioabsorbable isocyanate and amine-substituted polyalkylene glycol
Bioabsorbable compounds which include a polyalkylene oxide backbone with two or more isocyanate substituents are useful as one component adhesives. Absorbable compositions useful as a two component adhesive contain a) a polyethylene oxide having two or more amine substituents with b) a bioabsorbable diisocyanate compound, or alternatively contain a) a polyethylene oxide having two or more isocyanate substituents with b) a bioabsorbable diamine compound, or, alternatively contain a) a bioabsorbable diisocyanate compound and b) a bioabsorbable diamine compound.
1. A method comprising:
contacting tissue with a bioabsorbable compound comprising an amine-substituted polyalkylene glycol and a bioabsorbable isocyanate of the formula:
R′ 4-n —C—(R) n
wherein the R′ groups can be the same or different at each occurrence and are each individually selected from the group consisting of —H and C 1 to C 8 alkylene groups, n is a number of from 2 to 4, and the R groups can be the same or different at each occurrence and are each individually selected from the group consisting of polyalkylene oxide groups and polyalkylene oxide groups substituted with at least one isocyanate group having the formula:
—[A] n —NCO
wherein A is a bioabsorbable group and n is from 1 to about 20,
with the proviso that at least two of the R groups are polyalkylene oxide groups substituted with at least one isocyanate group; and
joining the tissue with other tissue to close a wound.
2. A method as in claim 1 , wherein the amine substituted polyalkylene glycol has the formula:
R′ 4-n —C—(R) n
wherein the R′ groups can be the same or different at each occurrence and are each individually selected from the group consisting of —H and C 1 to C 8 alkylene groups and the R groups can be the same or different at each occurrence and are each individually selected from the group consisting of polyalkylene oxide groups and polyalkylene oxide groups substituted with at least one amine group,
with the proviso that at least two of the R groups are polyalkylene oxide groups substituted with at least one amine group, and n is a number of from 2 to 4.
3. A method as in claim 1 , wherein the amine-substituted polyalkylene glycol has the formula:
wherein the R groups are the same or different at each occurrence and are each individually selected from the group consisting of —H, C 1 to C 8 alkylene groups, polyalkylene oxide groups and polyalkylene oxide groups substituted with at least one amine group, with the proviso that at least two of the R groups are polyalkylene oxide groups substituted with at least one amine group, and n is 2 to 6.
4. A method comprising: contacting tissue with a bioabsorbable composition comprising an amine-substituted polyalkylene glycol and a bioabsorbable isocyanate of the formula:
wherein the R groups are the same or different at each occurrence and are each individually selected from the group consisting of —H, C 1 to C 8 alkylene groups, polyalkylene oxide groups and polyalkylene oxide groups substituted with at least one isocyanate group having the formula:
—[A] n —NCO
wherein A is a bioabsorbable group and n is from 1 to about 20,
with the proviso that at least two of the R groups are polyalkylene oxide groups substituted with at least one isocyanate group, and n is 2 to 6; and
joining the tissue with other tissue together to close a wound.
5. A method as in claim 4 , wherein the amine substituted polyalkylene glycol has the formula:
R′ 4-n —C—(R) n
wherein the R′ groups can be the same or different at each occurrence and are each individually selected from the group consisting of —H and C 1 to C 8 alkylene groups and the R groups can be the same or different at each occurrence and are each individually selected from the group consisting of polyalkylene oxide groups and polyalkylene oxide groups substituted with at least one amine group,
with the proviso that at least two of the R groups are polyalkylene oxide groups substituted with at least one amine group, and n is a number of from 2 to 4.
6. A method as in claim 4 , wherein the amine-substituted polyalkylene glycol has the formula
wherein the R groups are the same or different at each occurrence and are each individually selected from the group consisting of —H, C 1 to C 8 alkylene groups, polyalkylene oxide groups and polyalkylene oxide groups substituted with at least one amine group,
with the proviso that at least two of the R groups are polyalkylene oxide groups substituted with at least one amine group, and n is 2 to 6.