The cassettes enable one or both of displacement-based or vacuum-based aspiration.

A peristaltic pump (20) having controlled suction.

So he will try to live in constant aspiration, eternal aspiration.

The fixed stops can be moved in the direction of the stroke, effecting an aspiration and an oscillation.

The vacuum ports may have vacuum applied via independent control.

No vacuum is applied during a forward stroke (48).

The catheter maintains a large, circular lumen for aspiration or delivery.

Furthermore, means for applying a vacuum to the vacuum suction units are provided, the means being adapted to independently apply vacuum to the vacuum suction units.

A valve at the port opens in response to suction.

The present invention relates to a front suction/discharge type outdoor unit (10) for an air conditioner which can solve problems due to increased capacity and decreased suction air.

Cutting residues may be collected by suction.

a general desire for détente and co-operation

But that knowing or aspiration is a longing for action, expression.

In one embodiment, the pump provides a negative pressure in a single chamber which can be used to operate one or two breast shield assembles.

The venture unit creates a suction using the compressed air.