| 摘要 |
Compositions have been developed to reduce or relieve prostatic obstruction. The polymers are used as an endourethral polymer liner. A biodegradable polymer liner layer can be applied to the prostatic urethra by in situ casting, or insertion and shaping of preformed materials. This liner is preferably formed from structurally supportive, yet eventually biodegradable, polymers which further bolster and support the urethra and peri-urethral tissue during healing, eliminating the need for post-procedure catheter drainage. This step may be optional in specific clinical circumstances. Alternatively, the polymer coating may be applied to a structural material such as a stent, to decrease adhesion and/or provide release of drugs to enhance healing. The compositions can also be used for intra-prostatic void exclusion and space filling with adhesive and/or therapeutic polymers. Voids created as a result of intragland "shelling out" are filled with adhesive polymers which facilitate intraprostatic void cavity wall bonding and healing. Polymers are specifically selected to minimize inflammation, secondary bleeding and late fibrotic scarring and stricturing.
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