Table 2.

Materials of the layer that could minimize tissue adhesions or attachment in the marketed intraperitoneal hernia mesh in China and the U.S.

No.	Type of material	Chemical name of material	Ref.
1	Non-absorbable synthetic materials	ePTFE	[65]
2		PVDF	[30]
3		Cross-linked acrylic polymer with polyamide	[27]
4		Polyurethane	[31]
5		silicone	[66]
6	Absorbable synthetic materials	P (LA-CL)	[32,67]
7		P (GA-CL)	[31]
8		P (GA-TMC)	[40]
9		P (GA-CL-TMC-LA)	[68]
10		Oxidized regenerated cellulose (ORC)	[56,69]
11	Natural materials	Bioabsorbable Oil Fatty Acid (O3FA): fatty acids, lipids and glycerides	[31]
12		Cross-linked resorbable collagen film of porcine origin	[53]
13	Composite materials	Porcine collagen, polyethylene glycol (PEG)and glycerol	[64,70]
14		Porcine collagen and glycerol	[71]
15		Sodium hyaluronate (HA) and carboxymethyl cellulose (CMC)	[70]
16		Sodium hyaluronate, carboxymethyl cellulose and polyethylene glycol (HA-CMC-PEG)	[56,63]