A medical balloon catheter assembly includes a balloon having a permeable region and a non-permeable region.

In one mode of this construction, the material is porous along the permeable region and non-porous along the non-permeable region, such as by expanding only the permeable region.

The wrapper includes at least one area permeable to the liquid and at least one area impermeable to the liquid.

A local area of the eyeglass paster is hollowed out to act as a permeable area (3) or a tear line (4) is provided on the external edge of the local area needed to be hollowed out to act as a permeable area.

The energy-releasing zone of the energy guide is located in an energy-transparent region of the hollow organ.

Upon contacting an aqueous fluid, the swelling agent swells in the permeable zone.

The shape of the permeable area (3) or the area surrounded by the tear line (4) is rectangular or ellipse or similar to rectangular or ellipse.

The swelling agent is combined with a carrier fluid before being passed to the permeable zone.

The area between the core outer periphery and the sanitary napkin outer periphery is a breathable zone.

There is provided in the wall a permeable area for the gas ions and an electrode is provided on each side of the area (29).

A minor portion of the solution is able to permeate from foam (39) into the permeable zone (40).

It is then removed, optionally evacuated, from the interior of the container via the gas-permeable zone.

Methods of cementing in a subterranean formation include passing a swelling agent to a permeable zone in a subterranean formation.

An interference drum has a sidewall at least partially positioned inside the gap and comprising at least one magnetic field permeable zone and at least one magnetic field impermeable zone.

The elastic membrane (76) comprises an air-impermeable zone opposite the window (74) and capable of completely covering same and an air-permeable zone arranged proximate the impermeable zone.