A laparoscopic access card that automatically prevents screw-in operations
A laparoscopic and access card technology, applied in the field of access card, can solve the problems such as the access card puncturing organs and blood vessels, and it is not suitable to feel the change of pressure, so as to ensure safety and prevent damage to internal organs and blood vessels in the abdominal cavity. effect of the phenomenon
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[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0018] A laparoscopic access card that can automatically prevent the screw-in operation includes a puncture sheath 1 and a puncture core 2. The puncture core 2 is arranged in the center of the puncture sheath 1 and can puncture the skin under the action of an external force. The puncture sheath 1 is provided with an automatic stop mechanism. When the head end of the puncture sheath 1 punctures the abdominal wall and enters the abdominal cavity, the automatic stop mechanism is activated to prevent the puncture sheath 1 and the puncture core 2 from continuing to enter the abdominal cavity.
[0019] The structure of this embodiment is as figure 1 As shown, the automatic preventing mechanism includes a safety calibration mechanism 4 and a positioning mechanism 8. The top of the puncture sheath 1 is provided with a hand-held plate 7, which...
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