Venous catheter device capable of being sealed

An occludable venous catheter device, comprising:

• a needle tube (1) for puncturing skin and venous wall, having a bottom portion (15), a front portion (11) and a front end (111);
• a needle tube base (16) connected to the bottom portion (15) of the needle tube (1);
• a venous catheter (2) having a venous catheter lumen (20), a rear-end opening (202) and a front-end opening (201);
• a venous catheter base (23) connected to the rear-end opening (202) in a sealed manner, having a chamber (230);
• a sealer (25) disposed on the venous catheter base (23) for sealing the chamber (230) of the venous catheter base (23);
• an occluding wire (3) covered at least partially by an isolating element (5) which isolates the occluding wire (3) from the outer environment;
• the needle tube (1) passing through the sealer (25), the front portion (11) of the needle tube (1) located inside the venous catheter lumen (20), and the front end (111) of the needle tube (1) passing through the front-end opening (201) and being exposed;
• wherein,
• the venous catheter device further comprises a guide passage (40) having a straight tube portion (41) at least at the front of the guide passage (40) and a front-end opening (401) connected to the venous catheter lumen (20) directly or through the chamber (230);
• the occluding wire (3) is capable of entering the venous catheter lumen (20) through the guide passage (40);
• at least the straight tube portion (41) of the guide passage (40) is coaxial with the venous catheter (2) or the straight tube portion (41) is capable of moving in an externally-isolated manner to a position that a central axis (L2) of the straight tube portion (41) coincides with a central axis (L1) of the venous catheter (2);
• the occluding wire (3) and the guide passage (40) reach directly inside the chamber (230) and are isolated from the outer environment;
• the sealer (25) or a portion of the sealer (25) having the guide passage (40) is rotatably connected inside the venous catheter base (23), and a rotation axis (L3) of the sealer (25) is parallel to the central axis (L1) of the venous catheter (2);
• and
• the rotation axis (L3) is distinct from and equidistant between the central axis (L2) of the guide passage (40) and the central axis (L1) of the venous catheter (2).