Patents. An implantable endoluminal device that is fabricated from materials that present a blood or body fluid and tissue contact surface that has controlled heterogeneities in material constitution. An endoluminal stent-graft and web-stent that is made of an monolithic material deposited into a monolayer and...he endoluminal stent-graft is characterized by having controlled heterogeneities in the stent material along the blood flow surface of the stent and the method of fabricating the stent using vacuum deposition methods.
Formaldehyde is naturally produced in very small amounts in our bodies as a part of our normal, everyday metabolism and causes us no harm. It can also be found in the air that we breathe at home and at work, in the food we eat, and in some products that we put on our skin.
Formaldehyde is one of the few chemicals that can easily penetrate the skin, but even so compared to the formaldehyde you are generating yourself and the formaldehyde that you are eating as part of your normal diet the liver is hardly going to even register the extra contribution getting in via your skin.he quantities are low but even so I am not at all keen on the idea of biologically active breakdown products spontaneously forming on the skin. DMDM Hydantoin hasnât been shown to have this problem, but the molecule itself turns out to sensitise a reasonable number of people.