Lactone bearing absorbable polymers

Details Lactone bearing absorbable polymers Lactone bearing absorbable polymers

2007-04-17

2007-04-17

Boykin, Terressa (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

C215S011100, C428S035700, C514S212010, C514S212020, C528S354000

Reexamination Certificate

active

11114452

ABSTRACT:
The present invention pertains to biodegradable polymers comprising a non-polymerizable lactone, biodegradable compositions comprising the polymer and a therapeutic agent, the use of the compositions for the sustained release of therapeutic agents, wherein the therapeutic agent is reversibly immobilized on the polymer matrix using ionic complexation between the latent carboxylic groups present on the lactone bearing polymer matrix and a cationic group on the therapeutic agent.

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