Percutaneous skin-puncture traction retractor radially unfolded in visual endoscopy
A technology of radial deployment and skin traction, applied in puncture needles, puncture needles, medical science, etc., can solve the problems of increased labor intensity of medical staff, limited surgical operation space, and single function, so as to reduce local stress on the skin , Save operation time, improve operation efficiency
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[0021] Example: A percutaneous puncture skin traction hook radially deployed under a visual endoscope, such as figure 1 Shown. The device includes a central core rod 1 and a sleeve 4 nested inside and outside. The front end of the central core rod extends from the front end of the sleeve and is provided with a top cone 2 for piercing the skin. The outer diameter of the rear end of the top cone and the outer diameter of the sleeve Consistent. Such as figure 1 As shown, four abduction group petals 5 are evenly arranged around the central core rod between the rear side of the top cone and the front end of the sleeve, and the central core rod close to the rear surface of the top cone is provided with a ring gear 3, such as Figure 4 As shown, an arc-shaped tooth surface 10 is provided on the inner side of the abduction group petal, and the ring gear and the arc-shaped tooth surface mesh with each other. Such as figure 2 As shown, the front end of the sleeve protrudes four swing s...
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