| 摘要 |
A safe needle tube structure is mainly comprised of an injection tube, a connection seat, and an injection handle. A blocking-and-supporting portion is pivotally arranged in the front end of the injection tube. A connection seat is arranged inside the injection tube. And, a connection portion is pivotally arranged in the front end of the connection seat. Two ring troughs are arranged oppositely in the front end of the connection portion. A fitting-in portion is in integration and in extension arranged in the tail end of the connection seat. A gliding trough is cut and arranged inside the fitting in portion. And, an injection handle is also arranged through the interior of the gliding trough. A fitting-in block is in integration and in extension arranged in the front end of the injection handle. If the injection handle is pulled backward, then the blocking-and-supporti ng portion at the front end of the injection tube will make the injection needl e stay at the front end of the injection tube and the injection tube may suck in medicine for injection. After the medicine is injected, the injection handle is rotated an angle to make the ring trough of the connection portion and th e ring block of the injection needle be jointed to one body. The injection handle is moved backward to tail end. The fittingblock of the injection handle is separated from the gliding trough of the connection seat. The injection needle stays inside the injection tube to reach the safe injection and recycling.
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