The sampling procedure of the biopsy needle

Step 1: The hollow needle and the solid needle are inserted into the soft tissue to achieve positioning before reaching the target position.

Step 2: The solid needle is still, and the hollow needle continues to puncture the soft tissue forward until it reaches the target position.

Step 3: After obtaining the biopsy tissue at the target location with the hollow needle, the tissue sample and the biopsy needle are withdrawn to the outside of the soft tissue by vacuum adsorption

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