Balloon containment device

An inflatable device comprising:

• an inflatable balloon having a body and a neck portion, the neck portion formed by a sidewall having a proximal end opposite the body and a distal end adjacent the body, the sidewall forming a balloon opening portion having an inner diameter when the balloon is inflated, wherein the proximal end of the neck portion comprises a first opening for a flow of a fluid into and out of the inflatable balloon;
• an air containment body positioned in the body, the air containment body having a rounded surface facing the neck portion, the rounded surface having a first outer diameter larger than an inner diameter of the balloon opening portion and positionable relative to the distal end of the neck portion;
• and,
• a flexible elongate external retainer curving from the air containment body through a second opening formed in the sidewall of the neck portion, the elongate external retainer having a retainment end positioned outside the balloon, wherein the second opening in the sidewall of the neck portion is located within a middle portion of the neck portion, and wherein the second opening is closed against the elongate external retainer by an elastic retention property of the inflatable balloon.

A method comprising:

• providing an inflatable balloon having a body and a neck portion, the neck portion formed by a sidewall having a proximal end opposite the body and a distal end adjacent the body, the sidewall forming a balloon opening portion having an inner dimension when the balloon is inflated, wherein the proximal end of the neck portion comprises a first opening for a flow of a fluid into and out of the inflatable balloon;
• positioning an air containment body in the body of the balloon, the air containment body having an outer dimension larger than an inner dimension of the balloon opening portion;
• and,
• positioning an elongate external retainer connected to the air containment body through a second opening formed in the sidewall of the neck portion such that a retainment end of the elongate external retainer is positioned outside of the balloon, wherein the second opening in the sidewall of the neck portion is located within a middle portion of the neck portion, and wherein the second opening is closed against the elongate external retainer by an elastic retention property of the inflatable balloon.