Isothermic protective boot

Abstract

An isothermic protective boot designed particularly for patients with arterial disease. The boot has a complete inner lining and outer cover of a soft, non-allergenic material, a double layer of a soft, flexible, compressible isothermic protective material between the outer cover and inner lining, and a body of flexible, compressible weight-bearing material at the back of the boot in a position to extend along the heel cord and lower aspect of the calf of the patient's leg.

I claim: .[.1. An isothermic protective boot having a foot-receiving part and a contiguous leg-receiving part adapted to extend up to at least the lower portion of the calf of a patient, said boot having a complete inner lining of relatively soft, non-allergenic material, said boot also having a layer of relatively soft, flexible, compressible isothermic protective material throughout the full extent of both its parts and a body of weight-bearing material along at least a portion of the back of said leg-receiving part in a position to extend along the heel cord of the wearer such that when the wearer is lying on his back the weight-bearing surface of the extremity of the wearer will be over the heel cord and lower aspect of the calf and not the bottom of the heel..]. .[.2. An isothermic protective boot as defined in claim 1, wherein said boot has a complete outer cover of a relatively soft material..]. .[.3. An isothermic protective boot as defined in claim 2, wherein said inner lining and outer cover for the leg-receiving part and the top and sides of said foot-receiving part are portions of a single sheet integrally joined at the top of the leg-receiving part..]. .[.4. An isothermic protective boot as defined in claim 1 or 2, wherein said isothermic material is expanded 
     
        polyurethane..]. .[.5.  An isothermic protective boot as defined in claim 1, wherein said inner lining is made of paper..]. .[.6. An isothermic protective boot as defined in claim 3, wherein said single sheet is made of paper..]. .[.7. An isothermic protective boot as defined in claim 1, wherein said body of weight-bearing material is flexible and compressible but firmer than said layer of isothermic material..]. .[.8. An isothermic protective boot as defined in claim 7, wherein said weight-bearing material is expanded polyurethane..]. .[.9. An isothermic protective boot as defined in claim 1, including an insole disposed inside the boot at the bottom and comprising a layer of said isothermic material with a portion of said inner lining on its upper surface..]. .[.10. An isothermic protective boot having a foot-receiving part and a contiguous leg-receiving part adapted to extend up to the junction of the lower and middle third of the calf of a patient, said boot having a complete inner lining of a relatively soft, non-allergenic material, said boot having an outer cover of a relatively soft material, said boot also having between said inner lining and outer cover plural layers of relatively soft, flexible, compressible porous isothermic protective material throughout the full extent of both its parts, and a body of relatively soft, flexible, compressible weight-bearing material along at least a portion of the back of said leg-receiving part between said layers of isothermic material in a position to extend along the heel cord of the wearer such that when the wearer is lying on his back the weight-bearing surface of the extremity of the wearer will be over the heel cord and lower aspect of the calf and not the bottom of the heel..]. .[.11. An isothermic protective boot as defined in claim 10, wherein said boot has a main body portion constituting the entire leg-receiving part and the side and upper portions of said foot-receiving part, a bottom tread portion constituting the bottom of said foot-receiving part and having a portion of one said layer of isothermic material with a portion of said outer cover on its outer surface, and an insole disposed inside said boot in overlying relation to said tread portion and having a portion of another said layer of isothermic material with a portion of said inner lining on its top surface..]. .[.12. An isothermic protective boot as defined in claim 10, wherein said inner lining and outer cover for the main body portion of said boot are portions of a single sheet integrally joined at the top of said leg-receiving part..]. .[.13. An isothermic protective boot as defined in claim 10, wherein said isothermic material is expanded polyurethane..]. .[.14. An isothermic protective boot as defined in claim 10, wherein said inner lining and outer cover are made of paper..]. .[.15. An isothermic protective boot as defined in claim 10, wherein said body of weight-bearing material is firmer than said layers of isothermic material..]. .[.16. An isothermic protective boot as defined in claim 15, wherein said body of weight-bearing material is expanded polyurethane..]. .[.17. An isothermic protective boot as defined in claim 11, wherein said insole has a layer of cardboard on the bottom..]. .[.18. An isothermic protective boot having a foot-receiving part and a contiguous leg-receiving part adapted to extend up to at least the lower portion of the calf of a patient, said boot having an inner lining of relatively soft, non-allergenic material, and a body of weight-bearing material along at least a portion of the back of said leg-receiving part in a position to extend along the heel cord of the wearer such that when the wearer is lying on his back the weight-bearing surface of the extremity of the wearer will be over the heel cord and lower aspect of the calf and not the 
     
     
        bottom of the heel..]. .Iadd.19.  An isothermic protective boot having a foot-receiving part and a contiguous leg-receiving part adapted to extend up to at least the lower portion of the calf of a lower extremity of a patient, said boot having a complete inner lining of relatively soft, non-allergenic material, said boot also having a layer of relatively soft, flexible, compressible isothermic protective material throughout the full extent of both its parts, a body of flexible, compressible weight-bearing material along at least a portion of the back of said leg-receiving part in a position to extend along the heel cord of the patient such that when the patient is lying on his back the weight-bearing surface of the extremity of the patient will be over the heel cord and lower aspect of the calf thus relieving the bottom of the heel of any substantial weight bearing, said boot being sufficiently flexible to afford the patient at least limited ambulation, the exterior of said boot being soft and devoid of hard surfaces and sharp edges to preclude injury to the patient's other extremity, said boot having confronting edges at the front permitting said boot to be opened along said confronting edges to apply and remove said boot, said boot being adapted to cover and protect the lower calf portion and foot of the patient from the rear of the boot around the sides thereof to said confronting edges at the front of the boot, and releasable fastening means for the front of said boot adapted to provide a connection 
     
     
        between said confronting edges. .Iaddend. .Iadd.20.  An isothermic protective boot as defined in claim 19, wherein said boot has a complete 
     
     
        outer cover of a relatively soft material. .Iaddend. .Iadd.21.  An isothermic protective boot as defined in claim 20, wherein said body of weight-bearing material is contoured to preclude concentrations of pressure, especially adjacent the heel. .Iaddend. .Iadd.22. An isothermic protectve boot as defined in claim 21, wherein said body of weight-bearing material is between said layer of isothermic protective material and said outer cover, whereby the weight of the extremity is supported over a large area by said layer and body so that unit pressure on the back of the leg is minimized. .Iaddend. .Iadd.23. An isothermic protective boot as defined in claim 22, wherein said body of weight-bearing material is separate from and firmer than said isothermic protective material. .Iaddend.