Venous infusion port

Abstract

The invention discloses a venous infusion port. The key point of the technical scheme of the venous infusion port is that the venous infusion port comprises a central venous catheter, a puncture seatand an external infusion set; the puncture seat comprises a seat body, a silicone puncture septum, a liquid storage chamber and a connecting pipe; the cross section of the seat body is arranged in theform of a semicircular corner rectangular structure; a sealing elastic sheet is arranged in the liquid storage chamber; the sealing elastic sheet is always kept to abut against and fit the internal side surface of the silicone puncture septum in a non-stressed state; in the process that an eyeless needle punctures the silicone puncture septum, the eyeless needle can turn over around one side, fixedly connected with the seat body, of the eyeless needle by pushing the sealing elastic sheet till the eyeless needle is communicated with the liquid storage chamber; the connecting pipe comprises aninfusion nozzle and a clamp sleeve; the clamp sleeve is arranged in such a way that a plurality of elastic sheets surround a cylindrical structure; and in the process that the infusion nozzle is inserted into the central venous catheter, the elastic sheets expand outwards through deformation clearance till the clamp sleeve is clamped on the external side wall of the central venous catheter. The venous infusion port disclosed by the invention has the advantages that the central venous catheter and the puncture seat can be effectively prevented from being separated from each other, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of medical devices, more specifically, it relates to an intravenous infusion port. Background technique [0002] The current implantable venous port is a relatively new infusion line technology, which is a fully implanted closed infusion system embedded in the human body, which provides long-term venous access for patients. The system consists of a central venous catheter that is connected to a device called a cannula at the tip. Using a small surgical method, the catheter is subcutaneously punctured into a large human vein, such as the subclavian vein and the internal jugular vein, and the end of the catheter reaches the superior vena cava; part of the catheter is buried in the subcutaneous tissue, and the puncture seat at the other end is placed under the skin of the chest wall It is fixed in the tissue and sutured. After the operation, only a small sutured wound can be seen on the skin appearance. After ...

AI Technical Summary

Problems solved by technology

[0003] Since the central venous catheter and the puncture seat implanted in the body can be used for more than ten years or even longer in principle, and the puncture point in the process of puncturing the puncture seat usually falls in the middle of the puncture seat, resulting in easy rupture of the silicone puncture septum, which is not It is beneficial to the l

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