| 摘要 |
PURPOSE: A marrow cavity connecting tube with a pump is provided to reduce the damage of thigh-bone by employing a tube that is provided with a pump. CONSTITUTION: A marrow cavity connecting tube is comprised of a necrosis-region tube, a normal-region tube, a pump between the necrosis-region tube, and the normal-region tube. The necrosis-region tube is inserted into a necrosis tissue. The normal-region tube is inserted into the normal bone marrow. The pump is inserted under the skin to be operated by a patient or the contraction of muscle. The pump is further operated by a battery. A blood contained in the normal bone marrow is transferred to the necrosis tissue sequentially through the normal-region tube, the pump, and the necrosis-region tube.
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