Structure and Mechanism of Microcapsule Pump Using Osmotic Pressure Actuator.
Structure and Mechanism of Microcapsule Pump Using Osmotic Pressure Actuator.
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使用渗透压执行器的微胶囊泵的结构和机制。
DOI：
10.1299/kikaic.58.2483
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
T. Hiramatsu
中科院分区：
文献类型：
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作者：
S. Hattori;T. Fukuda;Y. Katsurayama;H. Matsuura;Shigenobu Nagamori;T. Hiramatsu
我们提出了一种微胶囊泵，这是一个可实现的和有用的微机械今天。我们表明，微胶囊泵产生的微流从微存储罐的溶液，不像其他泵，它泵出的液体从入口到出口的流量。根据环境条件，所提出的微胶囊泵具有来自储罐的微流量的功能。例如，该微致动器系统可以应用于需要长时间的药物输送，例如糖尿病患者的胰岛素注射，以及其他医疗应用。该微胶囊泵的结构由带有半透膜的入口、带有单向阀的出口和由渗透压控制的储罐组成。流出侧有一个单向阀，防止溶液从出口回流到入口。由于该泵应用于医学科学，因此它具有非常简单的结构和易于操作。使用不同性质的半透膜可以改变内部溶液的流出体积和渗透速率。该驱动器的显著特点是不需要外部驱动电源。该微胶囊泵的原型尺寸为直径5 mm，长度9.8 mm。重量为0.7g。
We propose a microcapsule pump which is one of the realizable and useful micromachines today. We show that the microcapsule pump produces a microflow from the microstorage tank of solution, unlike other pumps, which pumps out the liquid from the inlet to the outlet of the flow. The proposed microcapsule pump has the function of the microflow from the storage tank, depending on the environmental condition. For example, this microactuator system can be applied to drug delivery requiring a long time, such as insulin injection for diabetic patients, and other medical applications. This microcapsule pump structurally consists of an inlet with a semipermeable membrane, an outlet with a one-way valve and a storage tank controlled by osmotic pressure. The outflow side has a one -way valve that prevents backward flow of the solution from the outlet to the inlet. Since this pump is applied to medical science, it is of a very simple structure and easy to handle. It is possible that the outflow volume of internal solution and the rate of osmosis can be changed using semipermeable membranes with different properties. The salient feature of this proposed actuator is that an external driving power supply is not required in this microsystem. The size of the prototype of this microcapsule pump is 5 mm in diameter and 9.8 mm in length. Its weight is 0.7 g.