Method and apparatus for enclosure and removal of calculi and foreign bodies

An apparatus comprising:

• a cylindrical closed-looped braided material;
• a first end having an opening into an interior of the cylindrical material;
• and
• a second end being configurable to a sheath,
• wherein a diameter of the opening is configured to expand upon an application of a first axial compressive force at the first end, at a first vector pointing towards the second end, and
• wherein the interior of the cylindrical material is configured to compress upon an application of a second axial force received at the second end, at a second vector pointing away from the first end.

A apparatus comprising:

• a sheath;
• a cylindrical mesh top comprised of a closed-loop braided material, the mesh top having:
• a first end having an opening to an interior of the mesh top, and
• a second end being attached to the sheath;
• and
• an enclosing means integrated into a circumference of the mesh top, positioned at approximately the first end, the enclosing means comprising a tension line which, upon an increase of tension, encloses the opening of the first end;
• wherein the mesh top is configured to:
• expand upon a axial compression of the mesh top due to a force applied from an object at the first end, wherein the expansion causes an increase of a diameter of the first end, enabling a passage of the object into the interior of the mesh top,
• enclose, via the enclosing means, the object within the mesh top,
• receive a fragmenting device through a second end, and
• retain fragments of the object caused by an operation of the fragmenting device.