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相关概念视频

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Vasectomy is a surgical form of male sterilization that involves severing and sealing the vasa deferentia, preventing sperm from mixing with semen during ejaculation. Because a vasectomy does not impact the testes' ability to produce testosterone, hormone levels, libido, and sexual function generally remain unchanged. While vasectomy is highly effective in preventing pregnancy, with a success rate near 99.85%, rare cases of recanalization (spontaneous reconnection) can occur. Although...
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Updated: Jan 9, 2026

Rapid and Low-cost Prototyping of Medical Devices Using 3D Printed Molds for Liquid Injection Molding
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首批3D打印的阴道内环用于非荷尔蒙避孕.

Sarah Anne Howard1, Maimoona S Bhutta2, Rima Janusziewicz3

  • 1Division of Pharmacoengineering and Molecular Pharmaceutics, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

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|December 3, 2025
PubMed
概括
此摘要是机器生成的。

这项研究介绍了一种用于非激素避孕的新型3D打印的阴道内环,同时提供乳酸 (LA) 和糖单酸盐 (GML). 灵活的平台技术实现了持续的药物释放超过30天,提供了一个有前途的避孕选择.

关键词:
这是3D打印的IVR.非荷尔蒙避孕药是一种非荷尔蒙避孕药.长效的交付方式精子运动性 精子运动性它具有杀精活性,具有杀精活性.

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科学领域:

  • 生物材料科学 生物材料科学
  • 生殖健康 生殖健康
  • 药物输送系统 药物输送系统

背景情况:

  • 意外怀孕需要全球有效和可接受的避孕方法.
  • 现有的长效避孕药主要依赖于外源激素,有限的非激素选择如铜子宫内置器 (IUD).
  • 需要创新的非激素,长效避孕药输送系统,以提高坚持性和可靠性.

研究的目的:

  • 开发和描述下一代3D打印的阴道内环 (IVR),用于非荷尔蒙避孕药的联合输送.
  • 为了证明3D打印平台在实现可调节的乳酸 (LA) 和糖醇单酸 (GML) 释放率方面的灵活性.
  • 调查IVR矩阵内的药物加载和释放机制,以便在长时间内持续输送.

主要方法:

  • 一个3D打印的IVR的制造,设计用于乳酸 (LA) 和糖单酸 (GML) 的联合输送.
  • 在体外对IVR进行表征,通过修改环状性质和药物负载来确定药物释放动力学.
  • 在IVR矩阵中的药物相互作用的分析和释放机制的阐明.

主要成果:

  • 3D打印的IVR平台在实现一系列乳酸 (LA) 和糖单酸 (GML) 释放率方面表现出灵活性.
  • 从IVR中实现了持续释放LA和GML,目标速率超过30天.
  • 在IVR矩阵内获得了具有不同生理化学性质的药物相互作用的见解,澄清了加载和释放机制.

结论:

  • 一个新的3D打印的IVR平台使非激素避孕药,乳酸 (LA) 和糖单酸 (GML) 的联合输送成为可能.
  • 开发的IVR技术提供了可调和和持续释放的配置文件,证明了长效非激素避孕的潜力.
  • 该平台在开发可接受和有效的避孕方案方面取得了重大进展,解决了全球关键的健康需求.