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某些疾病,经一定间隔时间服药得不到充分疗效时,应连续恒速注入药物才有效。最近研制成了植入型输液泵,能将药物持续不断地注入血管内。已使用于肝癌患者,能将抗癌药以恒速注入体内组织。如图所示,本装置厚约2～3cm、直径9cm,由钛制成的圆盘状装置。钛制的皱纹管使圆盘分成内外二室。外室中充入0.7ml呈气液平衡状态的氟利昂(三氯氟烷),用作推动力源。内室中注入抗癌药。其工作原理是呈气液平衡状态的氟利昂液体,在一定温度时能保持一定的蒸气压,其压力的太小与
Certain diseases, the medication can not be fully effective after a certain interval of time, continuous infusion of drugs should be continuous and effective. Recently developed into implantable infusion pump, the drug can be continuously injected into the blood vessels. Has been used in patients with liver cancer, anti-cancer drugs can be injected into the body at a constant rate. As shown, the device is about 2 ~ 3cm thick, diameter 9cm, made of titanium disc-shaped device. The titanium bellows divides the disc into two compartments. The outer chamber was filled with 0.7 ml of freon (trichlorofluoroalkane) in a gas-liquid equilibrium state and used as a driving force source. Infusion of anticancer drugs inside the room. Its working principle is the gas-liquid equilibrium Freon liquid, at a certain temperature can maintain a certain vapor pressure, the pressure is too small and