The present invention describes a new aliphatic polyoxaesters and blends thereof that 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.1l)(R.sub.2)--C(O)- -] I and a second repeating unit selected from the group of formulas consisting of: [--O--R.sub.4 --].sub.A, II [--O--R.sub.5 --C(O)--].sub.B, and III ([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XI and combinations thereof. These aliphatic polyoxaesters may be blended with other polymers which are preferably biocompatable.
本发明描述了一种新的脂肪族聚氧酯及其混合物,可用于生产外科手术器械,如缝合线、带有针头的缝合线、模制器械等。本发明还考虑了一种生产这些聚酯的方法。本发明的脂肪族聚氧酯具有第一二价重复单元的公式I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1l)(R.sub.2)--C(O)- -] I和从以下公式组成的第二个重复单元中选择的公式:[--O--R.sub.4 --].sub.A,II [--O--R.sub.5 --C(O)--].sub.B和III ([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XI及其组合物。这些脂肪族聚氧酯可以与其他最好是
生物相容的聚合物混合。