| 摘要 |
A medical article, such as a needle, includes an echogenic portion. The echogenic portion includes one or more patterns. The one or more patterns can include closely spaced surface features which provide enhanced echogenicity. The surface features can include grooves, recesses, channels, pits, pores, or the like. The grooves can be arranged in a zigzag shape in a needle body of the medical article. The zigzag shape can extend circumferentially around the needle body, that is, the grooves can extend perpendicularly to a longitudinal axis of the needle body. The zigzag shape provides enhanced echogenicity regardless of the section of the needle body underlying the ultrasound beam in use. |
