Patent ID: 11872153
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 5:
6. A method of creating an intact custom molded impression casting of a patient's foot and foot arch contour comprising the steps of:
a) first, mounting a fabric removal sock that expedites removal of a hardened casting slipper from the patient's foot around the patient's foot and lower extremity such that the removal sock extends upwardly from a plantar surface of the patient's foot to an open end on the lower extremity above the dorsal surface of the foot the fabric of the removal sock having a sufficiently low coefficient of friction between itself and a subsequently mounted barrier envelope that minimizes vacuum formation between the foot and barrier envelope and facilitates subsequent sliding removal of the hardened casting slipper, and being sheer or ultra-sheer with a denier of between 10 and 30, and resilient to substantially conform to the patent's foot;
b) second, mounting the barrier envelope over and adjacent to the removal sock, the barrier envelope being impermeable to resin, and prevents adherence of a resin to the removal sock or the patient's foot, the barrier envelope extending upwardly from a plantar surface of the patient's foot to an open end on the lower extremity well above the dorsal surface of the foot;
c) third, mounting the casting slipper over the barrier envelope on the patient's foot, the casting slipper is a low-cut resilient casting slipper with a medial and a lateral side, and a heel, and having a curable resin impregnated therein;
d) pulling the casting slipper up into contact with the contour of the patient's foot arch;
e) manipulating the patient's foot to achieve a desired orientation;
f) hardening the resin in the casting slipper while the patient's foot is in the desired orientation; and
g) removing the intact hardened casting slipper from the patient's foot by pulling the casting slipper down at the heel and sliding the casting slipper forward off the foot.