Abstract: Capsules, emplacement apparatus, and associated methods for establishing a capsule within tissue are described herein. The emplacement apparatus may be catheter-based or implemented in a handheld unit. The emplacement apparatus serves to introduced an encapsulating membrane in a collapsed condition into the tissue, and then to expand the encapsulating membrane within the tissue into a capsule by injection of fill material into the encapsulating membrane. Other than being capable of injection through the emplacement apparatus, the fill material may be selected and formulated to achieve such mechanical and biological properties within the encapsulating membrane after injection as are desired to achieve the therapeutic effect sought for the patient. Mechanically, the fill material within the encapsulating membrane after injection may be a liquid, a semi-solid such as a gel, or a solid such as a cross-linked polymer. The fill material may or may not be sealed within the encapsulating membrane.

Abstract: A method and product thereby for generating a biocompatible balloon, comprising, in combination: compressing with a first die at least two porous membranes enclosed by a releasing agent between the first die and each of the at least porous membranes, wherein the releasing agent has a melting point above that of the porous membranes; heating the porous membranes to a temperature between the melting point of the porous membranes and the melting point of the releasing agent; and removing the first die; whereby the releasing agent provides support to the porous membranes by cohesive forces between the releasing agent and the porous membranes, such that the porous membranes maintain, after the compressing with the first die, a form defined by the compressing with the first die.