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    • 8. 发明授权
    • Needle assembly having an elongate blunting device which allows for venting of air
    • 针组件具有允许排出空气的细长钝化装置
    • US06328717B1
    • 2001-12-11
    • US09453983
    • 1999-12-02
    • Donald D. SolomonMichael L. Miller
    • Donald D. SolomonMichael L. Miller
    • A61M532
    • A61M25/0643A61B5/15003A61B5/150213A61B5/150389A61B5/150503A61B5/150641A61B5/1535A61M25/065A61M25/0693A61M2005/3212
    • The invention generally relates to a needle assembly of the kind having a needle, an elongate blunting device, a shifting member, and a flash chamber. The needle is of the kind that has a needle proximal end, a sharp needle distal end and a needle cannula extending therethrough. The elongate blunting device is at least partially located within the needle cannula. The elongate blunting device is of the kind that has a blunting device proximal end, a blunting device distal end, and a blunting device blood flow passage therethrough through which blood can flow from the blunting device distal end to the blunting device proximal end. The shifting member can be actuated to move relative to the needle and, upon movement relative to the needle, causes movement to the elongate blunting device from a retracted position wherein the blunting device distal end is retracted into the needle cannula so that the sharp needle distal end can penetrate the body, to an extended position wherein the blunting device distal end extends out of the needle cannula so as to prevent the sharp needle distal end from penetrating the body.
    • 本发明一般涉及一种具有针头,细长钝化装置,移动构件和闪光室的针组件。 针是具有针近端,尖针头端和延伸穿过其中的针插管的针。 细长钝化装置至少部分地位于针插管内。 细长钝化装置是具有钝器件近端,钝器装置远端以及穿过其的平坦化装置血流通道的类型,血液可以通过该血流通道从平坦化装置远端流到平稳装置近端。 移动构件可以被致动以相对于针移动,并且在相对于针移动时使其从缩回位置移动到细长的钝化装置,其中平坦化装置远端缩回到针插管中,使得尖锐的针远端 末端可以穿透身体到达延伸位置,其中钝化装置远端延伸出针管,以防止尖锐的针头远端穿透身体。