| 摘要 |
PURPOSE:To enhance the adhesive strength between the first and second medical instrument bodies by forming the first resin film from a resin having a property well weldable to the first part to be welded of the first medical instrument body while forming the second resin film from a resin having a property well weldable to the second part to be welded of the second medical instrument body. CONSTITUTION:An annular laminated film 4 is interposed between the connection part 2 of a medical bag main body 1 and a connection tube 3. The laminated film 4 has a two-layer structure consisting of the first resin film 4a welded to the connection part 2 of the medical bag main body 1 and the second resin film 4b welded to the connection tube 3, and the first and second resin films 4a, 4b are adhered by an adhesive. Therefore, the substantial adhesive strength between the medical bag main body 1 and the connection tube 3 becomes the strength of the adhesive between the first and second resin films 4a, 4b. As a result, adhesive strength is enhanced to a large extent and, even when a medical bag is filled with a liquid drug and pressure is applied thereto, the leakage of the liquid drug or the detachment of the connection part is prevented. |
