Choice and management of negative pressure drainage in anterior cervical surgery

Figure 1 The silica gel negative pressure drainage ball and the gastrointestinal decompression apparatus. A: The silica gel negative pressure drainage ball; B: The gastrointestinal decompression apparatus.

Figure 2 Distribution of age groups by gender, disease, and drainage device. OPLL: Ossification of posterior longitudinal ligament.

Figure 3 The test results of different devices. A: The negative pressures of the three drainage devices with the injection of water; B: The negative pressures of the three drainage devices with the injection of air.