Portable sustained negative pressure drainage ball

Abstract

1. The name of the design product: portable sustained negative pressure drainage ball. 2. The use of the design product: to create a negative pressure environment, commonly used for active drainage, sputum, chest effusion, absorption of exuded blood and secretions, and retention of digestive juice in the gastrointestinal tract. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

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