Absorbable polyoxaesters
First Claim
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1. An aliphatic polyoxaesters comprising a first divalent repeating unit of formula I:
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space="preserve" listing-type="equation">[O--C(O)--C(R.sub.1) (R.sub.2)--O--(R.sub.3)--O--C(R.sub.1) (R.sub.2)--C(O)--] Iand a second repeating unit selected from the group of formulas consisting of;
space="preserve" listing-type="equation">[--O--R.sub.4 --].sub.A, II
space="preserve" listing-type="equation">[--O--R.sub.5 --C(O)--].sub.B, and III
space="preserve" listing-type="equation">([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof, wherein R1 and R2 are independently hydrogen or an alkyl group containing 1 to 8 carbon atoms;
R3 is an alkylene unit or is an oxyalkylene group of the following formula;
space="preserve" listing-type="equation">--[(CH.sub.2).sub.C --O--].sub.D --(CH.sub.2).sub.B -- IVwherein C is an integer in the range of from 2 to about 5, D is an integer in the range of from about 0 to about 12, and E is an integer in the range of from about 2 to about 5, except when D is zero, in which case E will be from 2 to 12;
R4 is an alkylene unit containing from 2 to 8 carbon atoms;
A is an integer in the range of from 1 to 1,000;
R5 is selected from the group consisting of --C(R6) (R7)--, --(CH2)3 --O--, --CH2 -CH2 --O--CH2 --, --CR8 H--CH2 --, --(CH2)4 --, --(CH2)F --O--C(O)-- and --(CH2)F --C(O)--CH2 ;
R6 and R7 are independently hydrogen or an alkyl containing from 1 to 8 carbon atoms;
R8 is hydrogen or methyl;
F is an integer in the range of from 2 to 6;
B is an integer in the range of from 1 to n such that the molecular weight of formula III is less than about 40,000;
P is an integer in the range of from 1 to m much that the molecular weight of formula XI is less than about 40,000;
G represents the residue minus from 1 to L hydrogen atoms from the hydroxyl groups of an alcohol previously containing from 2 to 12 hydroxyl groups; and
L is an integer from about 1 to about 12.
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Abstract
The present invention describes a new aliphatic polyoxaesters that is bioabsorbable and may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:
[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)--
]I
and a second repeating unit selected from the group of formulas consisting of: ##STR1## and combinations thereof.
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Citations
22 Claims
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1. An aliphatic polyoxaesters comprising a first divalent repeating unit of formula I:
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space="preserve" listing-type="equation">[O--C(O)--C(R.sub.1) (R.sub.2)--O--(R.sub.3)--O--C(R.sub.1) (R.sub.2)--C(O)--] Iand a second repeating unit selected from the group of formulas consisting of;
space="preserve" listing-type="equation">[--O--R.sub.4 --].sub.A, II
space="preserve" listing-type="equation">[--O--R.sub.5 --C(O)--].sub.B, and III
space="preserve" listing-type="equation">([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof, wherein R1 and R2 are independently hydrogen or an alkyl group containing 1 to 8 carbon atoms;
R3 is an alkylene unit or is an oxyalkylene group of the following formula;
space="preserve" listing-type="equation">--[(CH.sub.2).sub.C --O--].sub.D --(CH.sub.2).sub.B -- IVwherein C is an integer in the range of from 2 to about 5, D is an integer in the range of from about 0 to about 12, and E is an integer in the range of from about 2 to about 5, except when D is zero, in which case E will be from 2 to 12;
R4 is an alkylene unit containing from 2 to 8 carbon atoms;
A is an integer in the range of from 1 to 1,000;
R5 is selected from the group consisting of --C(R6) (R7)--, --(CH2)3 --O--, --CH2 -CH2 --O--CH2 --, --CR8 H--CH2 --, --(CH2)4 --, --(CH2)F --O--C(O)-- and --(CH2)F --C(O)--CH2 ;
R6 and R7 are independently hydrogen or an alkyl containing from 1 to 8 carbon atoms;
R8 is hydrogen or methyl;
F is an integer in the range of from 2 to 6;
B is an integer in the range of from 1 to n such that the molecular weight of formula III is less than about 40,000;
P is an integer in the range of from 1 to m much that the molecular weight of formula XI is less than about 40,000;
G represents the residue minus from 1 to L hydrogen atoms from the hydroxyl groups of an alcohol previously containing from 2 to 12 hydroxyl groups; and
L is an integer from about 1 to about 12. - View Dependent Claims (2, 3, 4)
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5. A device made from analiphatic polyoxaesters comprising a first divalent repeating unit of formula I:
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space="preserve" listing-type="equation">[O--C(O)--C(R.sub.1) (R.sub.2)--O--C(R.sub.1) (R.sub.2)--C(O)--]Iand a second repeating unit selected from the group of formulas consisting of;
space="preserve" listing-type="equation">[--O--R.sub.4 --].sub.A, II
space="preserve" listing-type="equation">[--O--R.sub.5 --C(O)--].sub.B, and III
space="preserve" listing-type="equation">([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof, wherein R1 and R2 are independently hydrogen or an alkhyl group containing 1 to 8 carbon atoms;
R3 is an alkylene unit or is an oxyalkylene group of the following formula;--[(CH2)C --O--]D --(CH2)B - IV wherein C is an integer in the range of from 2 to about 5, D is an integer in the range of from about 0 to abour 12, and E is an integer in the range of from about 2 to about 5, except when D is zero, in which case E will be from 2 to 12;
R4 is an alkylene unit containing from 2 to 8 carbon atoms;
A is an integer in the range of from 1 to 1,000;
R5 is selected from the group consisting of --C(R6) (R7)--, --(CH2)3 --O--, --CH2 --CH2 --O--CH2 --, --CR8 H--CH2 --, --(CH2)4 --, --(CH2)F --O--C(O)-- and --(CH2)F --C(O)--CH2 --;
R6 and R7 are independently hydrogen or an alkyl containing from 1 to 8 carbon atoms;
R8 is hydrogen or methyl;
F is an integer in the range of from 2 to 6;
B is an integer in the range of from 1 to n such that the molecular weight of formula III is less than about 40,000;
P is an integer in the range of from 1 to m such that the molecular weight of formula XI is less than about 40,000;
G represents the residue minus from 1 to L hydrogen atoms from the hydroxyl groups of an alcohol previously containing from 2 to 12 hydroxyl groups; and
L is an integer from about 1 to about 12. - View Dependent Claims (6, 7, 8, 9, 14, 15, 16)
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10. A device coated with an absorbable coating comprising an aliphatic polyoxaesters having a first divalent repeating unit of formula I:
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space="preserve" listing-type="equation">[O--C(O)--C(R.sub.1) (R.sub.2)--O--(R.sub.3)--O--C(R.sub.1) (R.sub.2)--C(O)--] Iand a second repeating unit selected from the group of formulas consisting of;
space="preserve" listing-type="equation">[--O--R.sub.4 --].sub.A, II
space="preserve" listing-type="equation">[--O--R.sub.5 --C(O)--].sub.B, and III
space="preserve" listing-type="equation">([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof, wherein R1 and R2 are independently hydrogen or an alkyl group containing 1 to 8 carbon atoms;
R3 is an alkylene unit or is an oxyalkylene group of the following formula;
space="preserve" listing-type="equation">--[(CH.sub.2).sub.C --O--].sub.D --(CH.sub.2).sub.B -- IVwherein C is an integer in the range of from 2 to about 5, D is an integer in the range of from about 0 to about
12) and E is an integer in the range of from about 2 to about 5, except when D is zero, in which case E will be from 2 to 12;
R4 is an alkylene unit containing from 2 to 8 carbon atoms;
A is an integer in the range of from 1 to 1,000;
R5 is selected from the group consisting of --C(R6) (R7)--, --(CH2)3 --O--, --CH2 --CH2 --O--CH2 -, --CR8 H--CH2 --, --(CH2)4 -, --(CH2)F --O--C(O)-- and --(CH2)F --C(O)--CH2 --;
R6 and R7 are independently hydrogen or an alkyl containing from 1 to 8 carbon atoms;
R8 is hydrogen or methyl;
F is an integer in the range of from 2 to 6;
B is an integer in the range of from 1 to n such that the molecular weight of formula III is less than about 40,000;
P is an integer in the range of from 1 to m such that the molecular weight of formula XI is less than about 40,000;
G represents the residue minus from 1 to L hydrogen atoms from the hydroxyl groups of an alcohol previously containing from 2 to 12 hydroxyl groups; and
L is an integer from about 1 to about 12 wherrein the inherent viscosity of the polyoxaester is in the range of from about 0.05 to about 2.0 deciliters per gram (dl/g) as measured in a 0.1 g/dl solution of hexafluoroisopropanol (HFIP) at 25°
C. - View Dependent Claims (11, 12, 17, 18, 19)
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13. A device coated with an absorbable coating comprising an aliphatic polyoxaesters having a first divalent repeating unit of formula I:
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space="preserve" listing-type="equation">[O--C(O)--C(R.sub.1) (R.sub.2)--O--(R.sub.3)--O--C(R.sub.1) (R.sub.2)--C(O)--] Iand a second repeating unit selected from the group of formulas consisting of;
space="preserve" listing-type="equation">[--O--R.sub.4 --].sub.A, II
space="preserve" listing-type="equation">[--O--R.sub.5 --C(O)--].sub.B, and III
space="preserve" listing-type="equation">([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof, wherein R1 and R2 are independently hydrogen or an alkyl group containing 1 to 8 carbon atoms;
R3 is an alkylene unit [containing from 2 to 12 carbon atoms] or is an oxyalkylene group of the following formula;
space="preserve" listing-type="equation">--[(CH.sub.2).sub.c --O--].sub.D --(CH.sub.2).sub.B -- IVwherein C is an integer in the range of from 2 to about 5, D is an integer in the range of from about 0 to about 12, and E is an integer in the range of from about 2 to about 5, except when D is zero, in which case E will be from 2 to 12;
R4 is an alkylene unit containing from 2 to 8 carbon atoms;
A is an integer in the range of from 1 to 1,000;
R5 is selected from the group consisting of --C(R6)(R7)--, --(CH2)3 --O--, --CH2 --CH2 --O--CH2 --, --CR8 H--CH2 --, --(CH2)4 --, --(CH2)P --O--C(O)-- and --(CH2)F --C(O)--CH2 --;
R6 and R7 are independently hydrogen or an alkyl containing from 1 to 8 carbon atoms;
R8 is hydrogen or methyl;
F is an integer in the range of from 2 to 6;
B is an integer in the range of from 1 to n such that the molecular weight of formula III is less than about 40,000;
P is an integer in the range of from 1 to m such that the molecular weight of formula XI is less than about 40,000;
G represents the residue minus from 1 to L hydrogen atoms from the hydroxyl groups of an alcohol previously containing from 2 to 12 hydroxyl groups; and
L is an integer from about 1 to about 12 wherein the inherent viscosity of the polyoxaester is in the range of from about 0.05 to about 2.0 deciliters per gram (dl/g) as measured in a 0.1 g/dl solution of hexafluoroisopropanol (HFIP) at 25°
C. - View Dependent Claims (20, 21, 22)
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Specification