Plastic article or earthenware shaping or treating: apparatus – Shaping means employing anatomical body or portion thereof
Patent
1994-09-29
1996-04-02
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Shaping means employing anatomical body or portion thereof
425389, 425393, 264222, 264503, 264571, 264573, 264DIG30, 623 27, 623901, B28B 130, B28B 2142
Patent
active
055035434
ABSTRACT:
A prosthetic casting machine receives an amputated stump while a patient is standing so that a hard socket can be made based upon the shape of the stump when it is under load. The machine includes a brim for accommodating an above-the-knee stump or a retaining disc for below-the-knee stumps. A telescoping leg enables precise adjustment of the height of the machine to accommodate patients of differing heights. The patient's stump is inserted into a liner and the liner is coated with plaster before the stump is inserted into the machine. After insertion, while the patient is standing, compressed air is introduced into a space between a transparent flexible bladder and a transparent rigid cylinder so that a uniform pressure is applied to the plaster by the bladder. The transparent parts enable a prosthetist to observe the results of the pressurization so that corrective steps may be taken if the plaster is not evenly compressed. The stump is elongated by a vacuum applied at its distal end and the plaster sets while the stump is elongated. This produces a hard socket having a clearance space between the distal end of the stump and the distal end of the socket.
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patent: 5380481 (1995-01-01), Oberle
Dang Vi Duong
Mason, Jr. Joseph C.
Smith Ronald E.
Woo Jay H.
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