The interchange of the optical fiber guide light needle and the needle core of a retainable needle are not needed when in use, and the blood efflux because of inexperienced operation can be avoided.
使用时无需进行光纤导光针与置留针针芯的互换，可避免因操作不熟练造成的血液外流。
The interchange of the optical fiber guide light needle and the needle core of a retainable needle are not needed when in use, and the blood efflux because of inexperienced operation can be avoided.
使用时无需进行光纤导光针与置留针针芯的互换，可避免因操作不熟练造成的血液外流。
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