Venous cannula is also a deep venous puncture catheter. The method is to select the appropriate puncture site and insert the needle under the skin, and insert the needle with negative pressure until the dark red blood is absorbed, indicating that the needle has entered the vein, and the guide wire is inserted. Withdraw the puncture needle to leave the guide wire in the blood vessel, and then insert the venous catheter that needs to be indwelled along the guide wire, then exit the guide wire, inject diluted heparin saline and fix the catheter, the deep venous catheterization is completed. The veins for puncture and catheterization are usually selected clinically, including the subclavian vein, internal jugular vein, and femoral vein. After the puncture catheter is indwelled, attention must be paid to the care of the puncture site to avoid infection with thrombus or catheter falling off. venous cannulation,best veins for cannulation,venous cannulation set,venous cannulation technique Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yongyuecellculture.com
Although the favorable factors in the crude benzene market began to appear, the downstream product market remained sluggish, and the oil ** trend was not good. Downstream manufacturers were not clear about the situation in the market outlook, the intention of receiving crude benzene is relatively weak, the actual market transactions are scarce. At present, the crude benzene market trend is still not clear, and the downstream goods are still more cautious, and the market stalemate will continue. It is expected that the domestic crude benzene market will continue to be dominated by sluggish consolidation in the near future, and the price fluctuation space is limited.
Crude benzene marketers cast flat
Last week, the crude benzene market in China was flat and the mainstream transaction price was between 5,800 and 6,300 yuan/ton, and the high turnover was more difficult. In recent days, the international crude oil price has continuously risen. This has given a strong support to the market's mentality. The coking plant has a small amount of crude benzene inventories. The market sentiment is relatively strong, the supply of goods at low levels has decreased, and the company's quotation has stabilized and stabilized. There was no blind acceptance of the goods and the market was slightly deadlocked.