Blood collection instrument, blood collection method and blood collector thereof

Blood collection instrument, blood collection method and blood collector thereof

  • CN 106,137,220 B
  • Filed: 07/31/2016
  • Issued: 01/12/2021
  • Est. Priority Date: 07/31/2016
  • Status: Active Grant
First Claim
Patent Images

1. A blood sampler, comprising:

  • the blood sampling connector comprises a blood drawing interface, an exhaust interface, a blood passing cavity and a blood discharging and air exhausting interface, wherein the blood discharging and air exhausting interface is provided with a blood discharging needle mounting hole and an air exhausting needle mounting hole which are connected in series;

    the blood passing cavity is arranged in the blood drawing interface;

    one end of the air exhaust needle is arranged in the air exhaust needle mounting hole;

    one end of the blood drainage needle penetrates through the air suction needle, is arranged in the blood drainage needle mounting hole and is communicated with the blood passing cavity;

    the inner diameter of the air suction needle is larger than the outer diameter of the blood discharge needle, a vent channel with an annular space is formed, the vent channel is communicated with the air exhaust hole, the mouth of the vent channel is provided with a retaining ring which partially extends into the vent channel and is used for retaining the relative positions of the air suction needle and the blood discharge needle, the retaining ring is provided with at least one vent notch so that the vent channel is communicated with the outside, and the thickness of the annular space of the vent channel is not more than 3 times of the wall thickness of the blood discharge needle.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×