US 12,291,462 B2
Medical tubing having differing color states
Amit Uday Limaye, San Diego, CA (US)
Assigned to CareFusion 303, Inc., San Diego, CA (US)
Filed by CareFusion 303, Inc., San Diego, CA (US)
Filed on Jul. 1, 2022, as Appl. No. 17/856,762.
Prior Publication US 2024/0002249 A1, Jan. 4, 2024
Int. Cl. C01G 37/00 (2006.01); A61M 39/08 (2006.01)
CPC C01G 37/006 (2013.01) [A61M 39/08 (2013.01)] 19 Claims
OG exemplary drawing
 
1. Medical tubing, for fluid transport therethrough, having a chromic material, wherein the medical tubing is configured to transition from a first state of color to a different, second state of color by application of a stimulus to the medical tubing,
wherein the medical tubing comprises an inner layer without the chromic material and an outer layer comprising the chromic material, the inner layer and the outer layer comprising a same base material,
wherein the tubing is colored transparent or colored translucent in one or both of the first state of color and the second state of color.