SEAL VALVE, CONNECTION PORT, MIX-FEED TUBE, CONNECTION DEVICE FOR LIQUID INFUSION, CIRCUIT AND CONNECTION SYSTEM FOR LIQUID INFUSION CIRCUIT THAT ARE FOR MEDICAL DEVICE

摘要

In a seal valve (20), a valve hole (20b) can be opened by pressing and deforming the seal valve (20) with the head of a male-type connection mouth, such as a mouth portion (401) of an injector (400), without making the head of the male-type connection mouth to penetrate through the seal valve (20). A connection port, a mix-feed tube, a connection device for a liquid infusion circuit, and a connection system for a liquid infusion circuit use the seal valve with the feature described above, realizing a needle-less environment.