초록 ▼

A support surface for general skin cooling, or reducing the incidence and promoting the healing of bedsores, includes: (a) at least one thermal layer comprising: a phase change material having a melting point of between about 18 and 32 degrees Centigrade; a gel or viscous fluid carrier in which t

A support surface for general skin cooling, or reducing the incidence and promoting the healing of bedsores, includes: (a) at least one thermal layer comprising: a phase change material having a melting point of between about 18 and 32 degrees Centigrade; a gel or viscous fluid carrier in which the phase change material is substantially evenly distributed; and a fluid-impermeable, conformable envelope surrounding the phase change material and the carrier; (b) at least one conformable compression support layer beneath and adjacent to the thermal layer; (c) at least one conformable base support layer beneath and adjacent to the compression layer, the base support layer having a higher indentor load deflection (ILD) than the compression layer. A preferred embodiment, with or without the thermal layer, includes a heat tube layer. Another preferred embodiment includes an envelope containing phase change material in a carrier material, without either of the support layers.

대표청구항 ▼

A support surface for general skin cooling, or reducing the incidence and promoting the healing of bedsores, includes: (a) at least one thermal layer comprising: a phase change material having a melting point of between about 18 and 32 degrees Centigrade; a gel or viscous fluid carrier in which t

A support surface for general skin cooling, or reducing the incidence and promoting the healing of bedsores, includes: (a) at least one thermal layer comprising: a phase change material having a melting point of between about 18 and 32 degrees Centigrade; a gel or viscous fluid carrier in which the phase change material is substantially evenly distributed; and a fluid-impermeable, conformable envelope surrounding the phase change material and the carrier; (b) at least one conformable compression support layer beneath and adjacent to the thermal layer; (c) at least one conformable base support layer beneath and adjacent to the compression layer, the base support layer having a higher indentor load deflection (ILD) than the compression layer. A preferred embodiment, with or without the thermal layer, includes a heat tube layer. Another preferred embodiment includes an envelope containing phase change material in a carrier material, without either of the support layers. the perfusate before the delivering step, and wherein the perfusate transfers heat to the tissue structure. 11. A method of treatment of a tissue structure in a patient, the tissue structure being coupled to an artery through which blood flows from the patient's circulatory system to the tissue structure and to a vein through which blood flows away from the tissue structure to the circulatory system, the method comprising: endovascularly positioning a first catheter in the artery; endovascularly positioning a second catheter in the vein; occluding the artery around the first catheter; and occluding the vein around the second catheter; and delivering a perfusate to the tissue structure through at least one of the first and second catheters while the artery and vein remain occluded, wherein the tissue structure is a liver, the first catheter occludes a hepatic artery, the second catheter occludes a hepatic vein, and a third catheter occludes a portal vein. 12. The method as in claim 11, further comprising adding therapeutic agent to the perfusate. 13. The method as in claim 11, wherein the perfusate is delivered through at least one of the first and third catheters and collected in the second catheter to establish antegrade perfusion. 14. The method as in claim 11, wherein the perfusate is delivered through the second catheter and collected in at least one of the first and third catheters to establish retrograde perfusion. 15. The method of claim 11, comprising the step of heating the tissue structure during the delivering step. 16. The method of claim 15, wherein the heating step raises the temperature of the tissue structure to at least about 100° F. 17. The method of claim 15, wherein the heating step raises the temperature of the tissue structure to at least about 105° F. 18. The method of claim 15, wherein the heating step comprises heating the perfusate before the delivering step, and wherein the perfusate transfers heat to the tissue structure.