发明授权
US5104705A Extruded polymer tubes for blood and fluid sampling 失效
用于血液和液体取样的挤出聚合物管

Extruded polymer tubes for blood and fluid sampling
摘要:
Plastic replacements for glass capillary tubes for drawing samples of blood or other body fluids are achieved by texturing the inside surface of the tube with uniform fine features and by extruding the tube over a suitably textured tapered pin with a (gradual) ratio of at least 6:1 during extrusion to ensure the transfer of the pin's surface texture to the inside diameter of the tube.
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