Casting and splinting product having multiple plaster setting rates
AssigneeM-Pact Worldwide Management Corporation
InventorGeorge A. Schulz
Life of this patent
Estimating the term…
Abstract
A casting blank for forming orthopedic casts is provided with two layers of plaster splints having different setting rates or times. The plaster splint layer disposed on a lower sheet of the casting blank sets more slowly than the layer disposed on an upper sheet of the blank. The quicker setting upper plaster splint layer rapidly immobilizes the injured body part, while the slower setting lower splint layer results in greater final cure strength and insulates the body part from the heat generated by the upper layer to prevent burning of the skin surface. The slower setting lower splint layer adapts more completely to the contours of the body portion to increase patient comfort.
Claims31
A casting blank for use in forming a plaster cast for a portion of a body, said blank comprising:
- first sheet of deformable water permeable material;
- a first layer of dry plaster material disposed on said first sheet of deformable water permeable material and having a preselected setting time after exposure to water;
- a second layer of dry plaster material disposed on said first layer of plaster material and having a shorter setting time after exposure to water than the setting time of the first layer of plaster material;
- and
- a second sheet of deformable water permeable material overlying said second layer of plaster material, said first and second sheets being joined together to hold said layers of plaster material therebetween.
A casting blank for use in forming a plaster cast for a portion of a body, said blank comprising:
- a first sheet of deformable water permeable material having nonaffinity for moistened plaster,
- a first layer of dry plaster material disposed on said first sheet of deformable water permeable material and formulated to generate a temperature of less than approximately 90.degree. F. during setting at room temperature after exposure to room temperature water;
- a second layer of dry plaster material disposed on said first layer of plaster material and formulated to generate a higher temperature upon setting after exposure to water than that generated by said first layer of plaster material;
- and
- a second sheet of deformable water permeable material overlying said second layer of plaster material, said first and second sheets being joined together to hold said layers of plaster material therebetween.
A casting blank comprising:
- a first sheet of deformable water permeable material;
- a second sheet of deformable water permeable material overlying said first sheet of deformable water permeable material;
- first and second layers of dry plaster material sandwiched between said first and second sheets of deformable water permeable material,
- said first layer of plaster material having a preselected setting time after exposure to water and being disposed between the first sheet of deformable water permeable material and said second layer of plaster material,
- said second layer of plaster material having a shorter setting time after exposure to water than said setting time of said first layer of plaster material, said second layer of plaster material being disposed between said first layer of plaster material and said second sheet of deformable water permeable material,
- said first and second sheets of deformable water permeable material being joined together to hold said layers of plaster material therebetween.
A method of constructing a casting blank from which a plaster cast for a portion of a body may be formed, said method comprising the steps of:
- providing first and second sheets of deformable water permeable material;
- placing a quantity of a first plaster splint material on said first sheet of deformable water permeable material to form a first plaster zone characterized by a preselected setting rate upon exposure to water;
- placing a quantity of a second plaster splint material on said first plaster zone to form a second plaster zone characterized by a faster setting rate upon exposure to water than said setting rate of said first zone;
- and
- joining said first and second sheets together to hold said first and second plaster splint materials therebetween.
Dependencies are inferred from the claim text.