| 摘要 |
FIELD: medical engineering. ^ SUBSTANCE: device has tubular casing with working end, stopcock mounted on the opposite end and screw motion guide member. The screw motion guide is rounded 8 mm long projection. The working end has worm having 1.5 cm long pitch. 10 mm long trocar worm has 3.5 cm large diameter, 6 mm long trocar worm has 2.5 cm large diameter. ^ EFFECT: reduced risk of traumatic complications. ^ 4 dwg
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