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  2. Negative-pressure wound therapy - Wikipedia

    Negative-pressure wound therapy ( NPWT ), also known as a vacuum assisted closure ( VAC ), is a therapeutic technique using a suction pump, tubing, and a dressing to remove excess exudate and promote healing in acute or chronic wounds and second- and third-degree burns. The therapy involves the controlled application of sub-atmospheric pressure ...

  3. Intermittent vacuum therapy - Wikipedia

    Intermittent vacuum therapy. The intermittent vacuum therapy ( IVT) is a treatment conducted in case of venous and arterial issues as well as in rehabilitation (after sports injuries [1] and vascular complaints ). With the aid of normal and low pressure, it should enable to control venous reflux, enhance lymphatic flow [2] and improve blood ...

  4. Vacuum pump - Wikipedia

    Vacuum pump. A vacuum pump is a type of pump device that draws gas particles from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was preceded by the suction pump, which dates to antiquity.

  5. Vacuum ejector - Wikipedia

    vacuum pump. A vacuum ejector, or simply ejector is a type of vacuum pump, which produces vacuum by means of the Venturi effect . In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area. The fluid leaving the jet is flowing at a high velocity which due ...

  6. Suction (medicine) - Wikipedia

    A dental vacuum system for central suction. In medicine, devices are sometimes necessary to create suction. Suction may be used to clear the airway of blood, saliva, vomit, or other secretions so that a patient may breathe. Suctioning can prevent pulmonary aspiration, which can lead to lung infections. In pulmonary hygiene, suction is used to ...

  7. Zero Gravity Research Facility - Wikipedia

    The facility consists of a concrete-lined shaft, 28 feet (8.5 m) in diameter, that extends 510 feet (160 m) below ground level. A steel vacuum chamber, 20 feet (6.1 m) in diameter and 470 feet (140 m) high, is contained within the concrete shaft. The pressure in this vacuum chamber is reduced to 13.3 pascals (1.3 × 10 −4 atm) before use ...

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