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    • 7. 发明公开
    • NEEDLE SYSTEM HAVING CLOSED STATE AND OPEN STATE
    • EP4151252A1
    • 2023-03-22
    • EP21198028.9
    • 2021-09-21
    • Xaga Surgical AB
    • FORSVALL, AndreasUVNÄS, KristerEDBERG, MatsNORENSTAM, RickardCARMONIUS, Ola
    • A61M5/158A61B17/34A61M25/01A61M25/06
    • A needle system (10) for injection and aspiration of fluids through a subcutaneous venous port (1) comprises a main body (120) comprising a cavity (121), a conduit (101) with a proximal (211) and distal end (212), a needle section (102) with a proximal (221) and distal end (222), the distal end having an opening (203). The system comprises a rod (103) with a proximal (231) and distal end (232) and a length that is greater than the length of the needle section. The rod comprises an elongated rod shaft portion (106) configured to fit inside the needle section and a rod tip portion (104), at the distal end of the rod. The system comprises a rod control assembly (130). The distal end of the conduit is arranged in the main body and open to the cavity. The proximal end of the needle section is connected to the main body and open to the cavity. The shaft portion is inside the needle section and the proximal end of the rod is attached to the rod control assembly. The rod control assembly is configured to shift the rod in the proximal and distal direction to put the system into a closed state and into an open state. The rod tip portion blocks the distal end opening of the needle section in the closed state, and the rod tip portion is shifted distally relative to the needle section and unblocks the distal end opening of the needle section in the open state, thereby allowing fluid to be injected and/or aspirated through the conduit and the needle section in the open state.