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    • 8. 发明授权
    • Method for delivering beneficial liquids at steady rate
    • 以稳定的速度输送有益液体的方法
    • US08240261B2
    • 2012-08-14
    • US13281288
    • 2011-10-25
    • John Howard GordonAshok V. JoshiTruman WoldSai Bhavaraju
    • John Howard GordonAshok V. JoshiTruman WoldSai Bhavaraju
    • A01C23/02
    • A01M1/2044A61L9/12Y10T137/2931
    • A method for delivering a beneficial agent is disclosed in one embodiment of the invention as including a water collection chamber. A water-transporting membrane is provided to communicate with the water collection chamber. An extraction chamber receives water through the water-transporting membrane, expanding the extraction chamber. A dispensing chamber, containing a beneficial agent, is configured to contract upon expanding the extraction chamber. This causes the dispensing chamber to expel the beneficial agent through a subterranean delivery channel, such as a rigid hollow spike. In certain embodiments, a rate adjustment mechanism may control the rate that water is received through the water-transporting membrane, thereby controlling the rate the beneficial agent is expelled. The water-transporting membrane has features that repel osmagent from passing through to the water collection chamber. The method features steady rate performance without refreshing the water chamber and low temperature sensitivity.
    • 在本发明的一个实施例中公开了一种递送有益剂的方法,包括一个收水室。 提供水输送膜以与收集室连通。 提取室通过水输送膜接收水,使提取室膨胀。 包含有益剂的分配腔被构造成在膨胀提取室时收缩。 这使得分配室通过地下输送通道(例如刚性中空尖峰)排出有益剂。 在某些实施例中,速率调节机构可以控制通过水输送膜接收水的速率,从而控制有益剂被排出的速率。 水输送膜具有排斥渗透到收集室的特征。 该方法具有稳定的速率性能,无需刷新水箱和低温灵敏度。