NEEDLE ASSEMBLY FOR VISUALIZATION OF FLUID MOVEMENT

    公开(公告)号:US20220379095A1

    公开(公告)日:2022-12-01

    申请号:US17731119

    申请日:2022-04-27

    Abstract: A needle assembly of a catheter system may include one or more features to facilitate flashback confirmation of catheterization while also preventing buildup of positive pressure within a flashback chamber of the needle assembly. The needle assembly may include a plug, which may include an aperture for receiving an introducer needle. A proximal opening of the introducer needle may be accessible from the proximal end of the needle hub. The plug may include a vent between an outer surface of the plug and an inner surface of the needle hub to prevent the buildup of positive pressure. The plug may include an extended distal end that reduces a volume of the flashback chamber. The plug may include a window in fluid communication with a notch of the introducer needle. Blood may flow from the notch into the flashback chamber with a reduced volume via the window of the plug.

    BLOOD COLLECTION SYSTEM WITH USER-ADJUSTED PRESSURE MANAGEMENT AND RELATED METHODS

    公开(公告)号:US20210128037A1

    公开(公告)日:2021-05-06

    申请号:US17075420

    申请日:2020-10-20

    Abstract: A catheter system may include a catheter adapter, a catheter extending distally from the distal end of the catheter adapter, and a needle hub coupled to the catheter adapter. The needle hub may be transparent, and a needle may be secured within the needle hub. The catheter system may also include a flow control plug coupled to the proximal end of the needle hub. In some embodiments, a flashback pathway may be disposed between an outer surface of the flow control plug and an inner surface of the needle hub. In some embodiments, the catheter system may include an inner barrel and an outer barrel, and the inner barrel and the needle hub may be configured to move proximally within the outer barrel to retract the needle. The flashback pathway may be disposed between an outer surface of the needle hub and an inner surface of the inner barrel.

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