SeLf-Locking safety pneumoperitoneum needLe

Abstract

The invention reLates to a seLf-Locking safety pneumoperitoneum needLe. The needLe comprises a puncture outer tube capabLe of performing abdominaL waLL puncture, an infLatabLe inner tube capabLe of fiLLing the punctured abdominaL cavity with carbon dioxide gas and a connection Locking mechanism capabLe of Locking the infLatabLe inner tube in the puncture outer tube; when the state of Locking the infLatabLe inner tube and the puncture outer tube by the connection Locking mechanism is removed, the puncture outer tube can be utiLized for carrying out required puncture operation, and when the puncture outer tube punctures through the abdominaL waLL, the infLatabLe inner tube can be instantLy Locked in the puncture outer tube through the connection Locking mechanism; after the infLatabLe innertube is Locked in the puncture outer tube, an inner tube air outLet hoLe of the head of the infLatabLe inner tube is Located in the outer side of the puncture tip end of the puncture outer tube. By means of the seLf-Locking safety pneumoperitoneum needLe, the infLatabLe inner tube and the puncture outer tube can be effectiveLy Locked after puncture, the damage to tissue and organs in the abdominaLcavity after successfuL puncture is avoided, and the needLe is convenient to use, safe and reLiabLe.

Description

Technical field [0001] The invention relates to a pneumoperitoneum needle, in particular to a self-locking safety pneumoperitoneum needle, which belongs to the technical field of medical devices. Background technique [0002] During laparoscopic surgery, carbon dioxide pneumoperitoneum must be established first. [0003] The current method of establishing carbon dioxide pneumoperitoneum is: use surgical forceps to clamp the skin around the navel and lift it up. After lifting, use the pneumoperitoneum to penetrate all layers of the abdominal wall tissue. The penetrated layers of tissue include skin, subcutaneous tissue, subcutaneous fat layer, and subcutaneous Muscle, peritoneum. Among them, the peritoneum is particularly dense and tough. The resistance of the insufficiency needle suddenly drops when penetrating the peritoneum, resulting in a strong sense of breakthrough; the existing insufflation needles cannot safely self-lock when penetrating the abdominal wall, and it is easy t...

AI Technical Summary

Problems solved by technology

Among them, the peritoneum is particularly dense and has strong toughness. When the Veress needle penetrates the peritoneum due to the sudden drop in resistance, the sense of breakthrough is extremely strong; when the existing Veress needle penetrates the abdominal wall, it cannot lock itself safely, and it is easy to cause tissue damage in the abdominal cavity. or damage to organs leading to accidents

[0004] The puncture diameter of the Veress needle is small, and self-locking cannot be effectively realized during use

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