Safety type veress needle capable of realizing self-locking

Abstract

The invention relates to a veress needle, in particular to a safety type veress needle capable of realizing self-locking, and belongs to the technical field of veress needles. The abdominal wall can be punctured by an outer puncture tube, and the abdominal wall can be inflated by an inner inflation tube after puncture, and interlocking of the inner puncture tube and the inner inflation tube can berealized through cooperation of an inner tube locking block and an outer tube locking groove on an elastic connecting piece; when the inner tube locking block is withdrawn from the outer tube lockinggroove, the locked state of the inner inflation tube and the outer puncture tube can be relieved; when the locking is relieved, the abdominal wall can be punctured, and an inner tube elastomer can beused to drive the inner inflation tube to move the abdominal wall is punctured, when a blunt head is located in front of the puncture tip, injury of the puncture tip to organs or tissues in the abdominal cavity can be avoided, and the veress needle is convenient to use, safe and reliable.

Description

technical field [0001] The invention relates to a Veress needle, in particular to a self-locking safety Veress needle, which belongs to the technical field of Veress needles. Background technique [0002] During laparoscopic surgery, carbon dioxide gas peritoneum should 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, and then use a pneumoperitoneum needle to penetrate each layer of abdominal wall tissue. The penetrated layers of tissue include skin, subcutaneous tissue, subcutaneous fat layer, subcutaneous tissue Muscle layer, peritoneum. 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 ...

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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