| 摘要 |
FIELD: medical engineering. ^ SUBSTANCE: device has casing with lumen, cannula and sharp tip. It is connected to Waldmann unit for measuring current and filling sterile solution. The casing has a lateral opening soldered acute end and mandrin having through canal. The mandrin has cannula and is set in the lumen to enable the lateral opening to be fully overlapped. ^ EFFECT: enhanced effectiveness in measuring intraosseous pressure and making medullary canal puncture. ^ 2 cl, 3 dwg
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