![]() ![]() Redivac drain - a high negative pressure drain.Negative pressure wound therapy - Involves the use of enclosed foam and a suction device attached this is one of the newer types of wound healing/drain devices which promotes faster tissue granulation, often used for large surgical/trauma/non-healing wounds.Drainage is thought to be achieved by capillary action, allowing fluid to travel through the open grooves into a closed cross section, which contains the fluid and allows it to be suctioned through the tube. ![]() Blake drain - a round silicone tube with channels that carry fluid to a negative pressure collection device.After compressing the bulb to remove fluid or air, negative pressure is created as the bulb returns to its normal shape. The collection device is typically a bulb with a drainage port which can be opened to remove fluid or air. Jackson-Pratt drain - consists of a perforated round or flat tube connected to a negative pressure collection device.Surgical drains can be broadly classified into:
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