English to Spanish Other Medical: Instruments Instructions regarding use of a surgical dressing

If **pinch pump** is not in collapsed state, pinch 1-5 times to restore negative pressure.

NPseal is a surgical dressing that delivers a therapy called negative pressure. The dressing features a simple **pinch pump** that applies and maintains gentle negative pressure that may promote wound healing.

Es como una "bombita", pero quiero ver si hay un término mejor. MIL GRACIAS de antemano!