Shapeable articles and methods of making and using the same
Shapeable articles, kits including one or more of the shapeable articles, and methods of making and/or using the shapeable articles. The shapeable articles include a shapeable member that can be shaped or manipulated into three-dimensional shapes without the use of tools and hold those shapes after removal of the force required to achieve the shape. The shapeable articles could have a variety of uses including use as surgical retractors to move and/or restrain non-target tissue and/or organs to improve access to the target tissue and/or organs.
1. A manually shapeable article comprising:
a shapeable member comprising:
a first sheet comprising a first major surface and a second major surface, wherein the first major surface and the second major surface are on opposite sides of the first sheet, wherein the first sheet further comprises a land portion extending between and connecting a plurality of structured elements, wherein each structured element of the plurality of structured elements comprises a protrusion extending from the land portion on the first major surface of the first sheet;
a second sheet comprising a first major surface and a second major surface, wherein the first major surface and the second major surface are on opposite sides of the second sheet, wherein the second sheet further comprises a land portion extending between and connecting a plurality of structured elements, wherein each structured element of the plurality of structured elements comprises a protrusion extending from the land portion on the first major surface of the second sheet;
wherein the first sheet is attached to the second sheet such that the second major surface of the first sheet faces the first or second major surface of the second sheet;
a first coversheet attached to a first major surface of the shapeable member; and
a second coversheet attached to a second major surface of the shapeable member, wherein one or both of the first coversheet and the second coversheet comprises a compressible layer, the compressible layer comprises closed cell foam.
2. An article according to claim 1 , wherein each structured element of the first sheet comprises a depression on the second major surface that corresponds to the protrusion extending from the first major surface of the first sheet.
3. An article according to claim 1 , wherein each structured element of the second sheet comprises a depression on the second major surface that corresponds to each protrusion extending from the first major surface of the second sheet.
4. An article according to claim 1 , wherein the land portion between the plurality of structured elements on the first sheet is attached to the land portion between the plurality of structured elements on the second sheet.
5. An article according to claim 1 , wherein one or both of the first sheet and the second sheet comprises a metal foil.
6. An article according to claim 1 , wherein one or both of the first sheet and the second sheet comprises a polymeric sheet comprising the land portions and the plurality of structured elements.
7. An article according to claim 1 , wherein one or both of the first coversheet and the second coversheet exhibits tensile elongation greater than zero and 1000% or less.
8. An article according to claim 1 , wherein one or both of the first coversheet and the second coversheet comprises one or more layers selected from a foam layer, a polymeric film, a nonwoven sheet, a woven sheet, a knitted sheet, a mesh sheet, and a net sheet.
9. An article according to claim 1 , wherein the compressible layer exhibits compression set of 50% or less of an original thickness when tested according to ASTM D3575.
10. An article according to claim 1 , wherein the shapeable member comprises one or more slits formed through the shapeable member, wherein each slit of the one or more slits extends from an edge of the shapeable member inward toward a center of the shapeable member.
11. An article according to claim 1 , wherein the shapeable member comprises a window opening formed therein, wherein the shapeable member forms a frame around the window opening.
12. An article according to claim 11 , wherein the first coversheet and the second coversheet extend over the window opening formed in the shapeable member.
13. An article according to claim 1 , wherein the article comprises a stiffness of 100 N or less according to a three-point bend test.
14. An article according to claim 1 , wherein one or both of the first coversheet and the second coversheet comprises an outer surface facing away from the shapeable member, and wherein the outer surface comprises a copolymer composition having a mean coefficient of friction of at least 0.2.
15. An article according to claim 1 , wherein one or both of the first coversheet and the second coversheet comprises an outer surface facing away from the shapeable member, and wherein the outer surface comprises a copolymer composition having a mean coefficient of friction of up to 0.45.