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02351 DISPOSABLE UNIT-DOSE VAGINAL APPLICATOR DEVELOPMENT Rencher, William F.* Objective: Develop a non-proprietary, pharmaceutically acceptable unit-dose vaginal applicator. Results: Commercial and prototype applicators were evaluated in terms of product delivery, residual product left in spent applicators, weight loss during storage, cap tightness and safety. Results convinced us a new vaginal applicator needed to be developed for microbicide use. A smooth tapered barrel tip was designed for elegant appearance and ease of insertion. A new piston design was developed to reduce product weight loss and one-direction movement for single use. A synthetic elastomer was selected for the piston to achieve these aims and meet strict regulatory chemical extraction/safety requirements. Barrel and cap material was selected based on USP package extraction requirements, and cap tightness, weight loss and mold performance test results. Regulatory required extraction tests were performed on all package components. Clinical evaluation was performed. Conclusion: A superb non-proprietary unit-dose vaginal applicator has been developed and qualified for clinical and commercial use. Dr. William Rencher |
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