US 12,303,612 B2
Soft tissue implant pocket
Paul Brennan, Victoria (AU); and Timothy Graeme Moore, Victoria (AU)
Assigned to POLYNOVO BIOMATERIALS PTY LIMITED, Victoria (AU)
Appl. No. 16/955,942
Filed by POLYNOVO BIOMATERIALS PTY LIMITED, Victoria (AU)
PCT Filed Dec. 21, 2018, PCT No. PCT/AU2018/051385
§ 371(c)(1), (2) Date Jun. 19, 2020,
PCT Pub. No. WO2019/119060, PCT Pub. Date Jun. 27, 2019.
Claims priority of application No. 2017905178 (AU), filed on Dec. 22, 2017.
Prior Publication US 2021/0069374 A1, Mar. 11, 2021
Int. Cl. A61F 2/12 (2006.01); A61L 27/18 (2006.01); A61L 27/56 (2006.01); A61L 27/58 (2006.01); C08G 18/42 (2006.01); C08G 18/48 (2006.01)
CPC A61L 27/18 (2013.01) [A61F 2/12 (2013.01); A61L 27/56 (2013.01); A61L 27/58 (2013.01); C08G 18/4266 (2013.01); C08G 18/4829 (2013.01); A61F 2210/0004 (2013.01); A61F 2210/0071 (2013.01); A61F 2210/0076 (2013.01); A61F 2230/0071 (2013.01); A61F 2250/003 (2013.01); A61F 2250/0051 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A human breast implant pocket comprising an inner surface, an outer surface and an opening shaped to receive a human breast implant, such that in use the implant pocket substantially covers the breast implant;
wherein the pocket is an independent and distinct structure from the breast implant, and both the inner surface and the outer surface of the pocket comprise a biodegradable polyurethane thermoset foam, the biodegradable polyurethane thermoset foam comprising a pore structure configured for cellular infiltration with an average pore size in the range of from greater than 50 μm up to 600 μm;
wherein the biodegradable polyurethane thermoset foam is derived from one or more biodegradable polyols having a molecular weight of less than or equal to about 10,000 Daltons and one or more isocyanates;
the biodegradable polyurethane thermoset foam comprises less than 0.1 wt. % aromatic functionality; and
the biodegradable polyurethane thermoset foam shrinks less than 20%, independently, in any single surface area after 10 days under in vivo condition; and
wherein the implant pocket does not contain an added exogenous biological entity.