Figure 513

Thrombectomy brush. Several types of mechanical thrombectomy devices have been developed as alternatives to pharmaceutical fibrinolysis. All mechanically macerate or disrupt clot into small fragments that embolize into the central veins and, eventually, the pulmonary vascular bed. This photograph demonstrates a brush attached to a motor drive that imparts high-speed rotary motion to disrupt the thrombus. The danger of most mechanical devices is the risk of vascular injury.

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