Blood storage device for extracorporeal circulation in cardiac surgery

Abstract

The invention discloses a blood storage device for extracorporeal circulation in cardiac surgery. A liquid adding pipe penetrates through the upper cover and is connected with the puncture outfit anda trapezoidal joint through a three-way joint; a filter screen is arranged in a soft bag; four sides of the filter screen are hermetically welded with the inner wall of the right side of the soft bagto form an independent space in the soft bag; the tail end of the liquid adding pipe penetrates through the upper cover and the filter screen and is positioned between the filter screen and the rightside wall of the soft bag; a liquid inlet pipe I, a liquid inlet pipe II and a liquid outlet pipe are also arranged at the bottom of the soft bag; the liquid outlet pipe is connected with the lowest part of the soft bag; the upper ends of the liquid inlet pipe I and the liquid inlet pipe II respectively penetrate through the middle part of the soft bag and the lowest part of the filter screen andare positioned between the filter screen and the right side wall of the soft bag; the upper end of the first liquid inlet pipe is lower than the second liquid inlet pipe, and liquid outlet holes are evenly formed in the portions, between the lowest position of the filter screen and the upper cover, of the pipe walls of the upper ends of the first liquid inlet pipe and the second liquid inlet pipeat intervals in a staggered mode. The contact between blood in the bag and air can be effectively reduced, and meanwhile it can be guaranteed that the filtering effect is better.

Description

technical field [0001] The invention relates to a medical device, in particular to a blood storage device for extracorporeal circulation in heart surgery. Background technique [0002] During open heart surgery, extracorporeal circulation is needed to replace the human heart and lungs to maintain systemic circulation and respiratory function. Currently, traditional extracorporeal circulation blood reservoirs are mostly hard-shelled and open-ended, with a large amount of prefilling, and more blood vessels need to be used. The priming fluid is used for hemodilution before extracorporeal circulation can be performed. Secondly, the large contact area between blood and foreign matter and air may easily cause activation of blood coagulation and fibrinolytic system, activation of complement, and inflammatory reaction; thus affecting the recovery of postoperative patients and even causing various complications of patients. Contents of the invention [0003] The present invention ...

AI Technical Summary

Problems solved by technology

[0002] During open heart surgery, extracorporeal circulation is required to replace the work of the human heart and lungs to maintain systemic circulation and respiratory functions. Currently, traditional extracorporeal circulation blood reservoirs are mostly hard-shelled and open-ended, with a large pre-filling volume and need to use more Priming solution for hemodilution before extracorporeal circulation

Secondly, the contact area between blood and foreign matter and air is large, which can easily cause the activation of blood coagulation and fibrinolytic system, complement activation, and cause inflammatory reactions; thus affecting the recovery of patients after surgery and even causing various complications of patients

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