US 12,011,942 B2
Rules for sensor integrated substrates
Allan Kenneth Frazer Grugeon Hunt, Beverley (GB); Lee Ian Partington, Hessle (GB); Marcus Damian Phillips, Wakefield (GB); and Felix Clarence Quintanar, Hull (GB)
Assigned to Smith & Nephew PLC, Watford (GB)
Appl. No. 17/440,679
Filed by Smith & Nephew PLC, Watford (GB)
PCT Filed Mar. 16, 2020, PCT No. PCT/EP2020/057145
§ 371(c)(1), (2) Date Sep. 17, 2021,
PCT Pub. No. WO2020/187851, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 1903661 (GB), filed on Mar. 18, 2019; and application No. 1918640 (GB), filed on Dec. 17, 2019.
Prior Publication US 2022/0176722 A1, Jun. 9, 2022
Int. Cl. H05K 1/00 (2006.01); B41M 1/12 (2006.01); B41M 3/00 (2006.01); H05K 1/02 (2006.01); H05K 1/09 (2006.01); H05K 3/12 (2006.01); A61F 13/00 (2006.01)
CPC B41M 3/006 (2013.01) [B41M 1/12 (2013.01); H05K 1/028 (2013.01); H05K 1/092 (2013.01); H05K 3/1216 (2013.01); A61F 13/00051 (2013.01); H05K 2201/10151 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of manufacturing a wound dressing, the method comprising:
perforating a substantially flexible substrate to form a plurality of openings configured to allow fluid to pass through the substantially flexible substrate, the plurality of openings constraining widths of a plurality of regions located between adjacent rows or columns of openings;
positioning in a first region of the plurality of regions of the substantially flexible substrate a first conductive track configured to be connected to a first sensor, the first conductive track having a first minimum width selected to maintain integrity of a first digital electrical signal conducted by the first conductive track, the first minimum width being constrained by a width of the first region;
positioning in a second region of the plurality of regions of the substantially flexible substrate a second conductive track configured to be connected to a second sensor, the second conductive track having a second minimum width selected to maintain integrity of a second digital electrical signal conducted by the second conductive track, the second minimum width being constrained by a width of the second region;
selecting a third minimum width of a third conductive track to be larger than the first minimum width of the first conductive track and the second minimum width of the second conductive track; and
positioning in a third region of the plurality of regions of the substantially flexible substrate the third conductive track configured to be connected to a tissue impedance sensor, the third conductive track having the third minimum width selected to maintain integrity of a third analog electrical signal conducted by the third conductive track, the third minimum width being constrained by a width of the third region,
wherein at least one of the first conductive track, second conductive track, or third conductive track is formed from a conductive material selected based on a respective minimum width of the track and a respective minimum width of the region.