This creation is a kind of protection cap, using the protection of each pipe fitting entrance of what haemodialyser. The protection cap of this creation includes caping, lid body, and the interconnecting piece of connection caping and lid body. The small what nozzle outside diameter of the interior diameter of caping, can make to retain a space between the top of caping and nozzle, to avoid pollution and the execution of sharp what sterilizing； Lid body； its interior diameter size is matched with the outside diameter size of the nozzle of pipe fitting, can be engaged with the ferrule of pipe fitting, finger gripping area is larger； and rotary teeth is further included on the outside of what lid body, protection cap can be removed from the nozzle of pipe fitting by rotary teeth when convenient for users to wearing gloves.本創作為一種保護蓋，應用於血液透析器之各管件出入口的保護。本創作的保護蓋，包含蓋頂、蓋身，以及連結蓋頂與蓋身之連接部。蓋頂的內直徑小於管口外口徑，可使蓋頂的頂部與管口間保留一空間，以避免汙染並利於滅菌之執行；蓋身，其內直徑大小與管件的管口的外口徑大小相配合，可與管件的管口密封接合，其指握面積較大，並於蓋身的外側進一步包含旋轉齒，方便使用者戴手套時可藉由旋轉齒將保護蓋自管件的管口取下。
