	US 11,931,477 B2
	PH-triggered therapeutical wound dressing
Markus Kettel, Heidenheim (DE); Andrew Tobias Jenkins, Bath (GB); and Laura Wallace, Bath (GB)
Assigned to PAUL HARTMANN AG, Heidenheim (DE)
Appl. No. 17/288,452
Filed by PAUL HARTMANN AG, Heidenheim (DE)
PCT Filed Oct. 23, 2019, PCT No. PCT/EP2019/078947 § 371(c)(1), (2) Date Apr. 23, 2021, PCT Pub. No. WO2020/084016, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 18202427 (EP), filed on Oct. 24, 2018.
Prior Publication US 2021/0379241 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61L 26/00 (2006.01)

CPC A61L 26/008 (2013.01) [A61L 26/0052 (2013.01); A61L 26/0071 (2013.01); A61L 2300/406 (2013.01); A61L 2300/442 (2013.01)]

15 Claims

1. A wound dressing comprising

a) a hydrogel layer able to be orientated facing towards the wound,

b) a layer comprising a pH-sensitive polymer, and

c) one or more compartment(s) comprising carrier containing one or more therapeutic substance(s),

wherein each compartment c) is placed in layer b), and

wherein layer b) comprises one or more recesses opposite the wound, wherein in said one or more recesses the one or more compartment(s) c) are embedded.