Pressurized crimped balloons and stents and methods

A balloon expandable stent system, comprising:

• a stent expanding balloon comprising:
• a first material layer defining:
• a first end portion;
• a second end portion;
• and
• a body portion disposed between the first end portion and the second end portion;
• and
• a stent retention feature;
• and
• a balloon expandable stent disposed around at least a portion of the body portion, wherein the balloon expandable stent comprises a plurality of struts and a plurality of interstices disposed between adjacent struts of the plurality of struts,
• wherein the stent retention feature extends radially outward from a nominal circumference of the body portion into the plurality of interstices when the stent expanding balloon and balloon expandable stent are in a crimped state.

A method of manufacturing a balloon expandable stent system, comprising:

• disposing a balloon expandable stent around at least a portion of a body portion of a stent expanding balloon, wherein the balloon expandable stent comprises a plurality of struts and a plurality of interstices;
• inflating the stent expanding balloon to a target crimping pressure;
• applying a radial crimping force to the inflated stent expanding balloon and the balloon expandable stent to reduce the outer diameters of the stent expanding balloon and the balloon expandable stent to a crimped state;
• venting the stent expanding balloon to maintain the target crimping pressure within the stent expanding balloon;
• and
• displacing portions of a base layer of the stent expanding balloon into the plurality of interstices of the balloon expandable stent.