| 摘要 |
of the disclosure A liquid infusion device comprising a bladder assembly including a bladder, a housing containing the bladder assembly, an inlet/outlet portion provided on the one end of the housing, a liquid drug passage, and a flow-regulating portion provided at the liquid drug passage. The bladder comprises a tubular body made of natural rubber and a layer made of silicone resin covering an inner surface of the tubular body. In the liquid infusion device, internal pressure of a bladder when dispensing liquid durg is high, so that liquid drug can be dispensed to a patient at about a constant velocity. Additives in natural rubber do not exude since liquid drug in the bladder does not contact with natural rubber.
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