US 11,904,074 B2
Devices and methods for contacting living tissue
Kent R. Gandola, San Diego, CA (US); and Jerome K. Aarestad, Escondido, CA (US)
Assigned to ISL, LLC, Woodland Hills, CA (US)
Appl. No. 16/646,895
Filed by ISL, LLC, Woodland Hills, CA (US)
PCT Filed Sep. 12, 2018, PCT No. PCT/US2018/050693
§ 371(c)(1), (2) Date Mar. 12, 2020,
PCT Pub. No. WO2019/055531, PCT Pub. Date Mar. 21, 2019.
Claims priority of provisional application 62/700,141, filed on Jul. 18, 2018.
Claims priority of provisional application 62/557,587, filed on Sep. 12, 2017.
Prior Publication US 2020/0276364 A1, Sep. 3, 2020
Int. Cl. A61L 31/14 (2006.01); A61M 16/06 (2006.01); A61F 11/08 (2006.01); A61L 27/16 (2006.01); A61L 27/50 (2006.01); A61L 27/56 (2006.01); A61L 29/04 (2006.01); A61L 29/14 (2006.01); A61L 31/04 (2006.01); A63B 33/00 (2006.01); B63C 11/12 (2006.01); C08J 9/14 (2006.01); H04R 1/10 (2006.01)
CPC A61L 31/146 (2013.01) [A61F 11/08 (2013.01); A61L 27/165 (2013.01); A61L 27/507 (2013.01); A61L 27/56 (2013.01); A61L 29/042 (2013.01); A61L 29/146 (2013.01); A61L 31/049 (2013.01); A61M 16/0622 (2014.02); A61M 16/0666 (2013.01); A63B 33/002 (2013.01); B63C 11/12 (2013.01); C08J 9/142 (2013.01); H04R 1/10 (2013.01); A61L 2300/404 (2013.01); C08J 2383/04 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An appliance configured to contact tissue, comprising:
(a) a tissue interface portion comprising a viscoelastic foam configured to provide a tissue contact surface of the appliance, wherein the viscoelastic foam comprises each of the following properties:
a Shore 000 of between 1 and 40, as measured using the Standard Test Method for Rubber Property-Durometer Hardness ASTM D2240-15;
a density (specific gravity) of between about 0.2 to 0.7 g/cm3; and/or
a level of tack of between about 0.2 and about 9 mJ/cm2 as measured using the Standard Test Method for Pressure-Sensitive Tack of Adhesives ASTM D2979-16;
an elastic (storage) modulus of between about 1 kPa and about 15 kPa;
a viscous (loss) modulus of between about 0.8 kPa and about 7 kPa; and
(b) a non-contacting portion configured to support the tissue interface portion and to be separated from the tissue by the tissue interface portion.