US 11,865,034 B2
Medical pad and system for thermotherapy
Marc E. Voorhees, Arvada, CO (US); Michael R. Hoglund, Windsor, CO (US); and Keir D. Hart, Lafayette, CO (US)
Assigned to Medivance Incorporated, Louisville, CO (US)
Filed by Medivance Incorporated, Louisville, CO (US)
Filed on Jan. 31, 2022, as Appl. No. 17/589,849.
Application 17/589,849 is a continuation of application No. 16/597,393, filed on Oct. 9, 2019, granted, now 11,234,859, issued on Feb. 1, 2022.
Application 16/597,393 is a continuation of application No. 15/035,062, granted, now 10,441,458, issued on Oct. 15, 2019, previously published as PCT/US2016/015688, filed on Jan. 29, 2016.
Claims priority of provisional application 62/108,417, filed on Jan. 27, 2015.
Prior Publication US 2022/0151821 A1, May 19, 2022
Prior Publication US 2023/0077318 A9, Mar. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 7/00 (2006.01); A61F 7/10 (2006.01); A61F 7/08 (2006.01)
CPC A61F 7/00 (2013.01) [A61F 7/08 (2013.01); A61F 7/10 (2013.01); A61F 2007/0001 (2013.01); A61F 2007/0054 (2013.01); A61F 2007/0056 (2013.01); A61F 2007/0086 (2013.01); A61F 2007/0093 (2013.01); A61F 2007/0096 (2013.01); A61F 2007/0098 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for making a medical pad for contact and thermal exchange with a patient, comprising:
providing a fluid circulation layer for containing a thermal exchange fluid circulatable therethrough;
connecting a first port to the fluid circulation layer for circulating the thermal exchange fluid into the fluid circulation layer;
connecting a second port to the fluid circulation layer for circulating the thermal exchange fluid out of the fluid circulation layer; and
adding a hydrogel layer to the fluid circulation layer so that the hydrogel layer extends across one side of the fluid circulation layer to define an adhesive surface for adherence to a patient's skin, the hydrogel layer including an ultraviolet light-cured composition, wherein:
the ultraviolet light-cured composition comprises:
a cross-linking copolymer in an amount of between about 25% to 30% by weight of the ultraviolet light-cured composition;
water in an amount of between about 25% to 35% by weight of the ultraviolet light-cured composition; and
glycerol in an amount of between about 27.5% to 32.5% by weight of the ultraviolet light-cured composition; and
the hydrogel layer has a thermal conductivity of between about 1.9 cal/hr-cm-° C. and 2.37 cal/hr-cm-° C.