2results about How to "Improve perfusion effect" patented technology

The application relates to a dual-purpose maintenance system for taking out a heart and maintaining the heart extracorporeally, which comprises a perfusion pipeline assembly and an organ box. The design that the organ box is communicated with a blood storage container and is switched can support the no-stop-taking-out and transportation operation of the heart. In the conversion process, the pipeline does not need to be replaced, the heat ischemic injury and ischemia-reperfusion injury of the heart are reduced.

This application discloses a blood pumping device and a ventricular assist system. The blood pumping device includes a motor and an infusion tube. The motor includes a housing, a rotor assembly, and a distal end cap. The housing encloses a receiving cavity, and a first flow passage is provided inside the housing. The distal end cap is connected to the distal end of the housing and has a first shaft hole extending axially. The rotor assembly includes a rotating shaft, at least a portion of which extends out of the receiving cavity through the first shaft hole. The gap between the rotating shaft and the contour surface of the first shaft hole forms a second flow passage, which communicates with the first flow passage. The infusion tube is connected to the proximal end of the motor and has a third flow passage communicating with the first flow passage. The flow rates Q1 of the first flow passage, Q2 of the second flow passage, and Q3 of the third flow passage satisfy the formula where k1∈(0,2], k2∈(0,2], k3∈(0,2], Q x ∈[10, 50].