2. Next we want to draw the guiding curve, select the sketch, draw the guiding curve in the plane according to the curvature of the pipe bending and the radius at the center of the above figure.
3. The next thing to do is to sweep. Select standard sweep Then select the addition operation in the dialog box that appears on the left side, select the circle drawn in step 1 as the contour, and the curve in step 2 as the path.
4. Finally, the thickness of the pipe is set. Select the thickening in the offset setting of the option. Because the circle of the circle we draw at the beginning is drawn at the outermost radius, we should expand to the inside when selecting the thickness. The value entered by 1 is a negative number, and the offset 2 is not offset, and is set to 0. In addition, since the pipeline is connected, it is necessary to set the bottom to be open at both ends.
The sweep of this surface is over, of course, the function of the 3D sweep is not limited to this. Here is just a very simple introduction, so that everyone has a preliminary view of the sweep function of Zhongwang 3D. Knowing that more functions require further research.
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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.
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