This invention discloses an anti-
fog and heat-insulating puncture device for thoracoscopic
surgery, belonging to the field of
medical device technology. Its key technical features include: an outer sheath, with a puncture
assembly on its inner wall, the puncture
assembly including a puncture needle core that slides through the inner wall of the outer sheath, a needle core
handle fixedly connected to the upper end of the puncture needle core, a needle tip fixedly connected to the lower end of the puncture needle core, an outer sheath seat fixedly connected to the upper outer wall of the outer sheath, a fixing
handle fixedly connected to the outer wall of the outer sheath seat, and a sealing
assembly on the outer wall of the outer sheath seat. This invention achieves heat insulation through a double-layer structure formed by the outer and inner sheaths; gas circulation is formed through the cooperation of the air inlet and outlet holes, effectively expelling
fog from the inner wall of the inner sheath and ensuring a clear surgical field; the sealing valve and sealing sleeve achieve internal sealing of the outer sheath to prevent gas leakage; the sealing ring is precisely positioned by positioning pins and positioning holes, and the sealing cap is stably installed by locking blocks and protruding pins, providing double sealing to prevent gas leakage and
impurity entry, reducing the
risk of infection.