Synthetic coating material

When medical device surface contacts blood, three systems, complement, platelet and coagulation systems are activated by foreign body recognition. After the complement system activation, C3a is generated and leads to inflammation.
After platelet system and coagulation systems activations, they lead to blood clot by platelet adhesion and plasma coagulation.
The 3 units on SEC ONE SURFACETM can prevent foreign body recognitions when contact with blood.


Hydrophilic unit reduces platelet adhesion, blood clot formation and microbes attachment.




Water repellent unit reduces complement activation.

Hydrophobic unit enhances the adhesiveness and consistent coating thickness on base materials and reduces the polymer elution.
| Appearance | Transparent viscous liquid |
|---|---|
| Polymer design | ・Copolymer with Polyethylene glycol acrylate, Alkyl acrylate and Polydimethyl siloxane methacrylate ・Water insoluble |
| Water contact angle | 40-60° |
| Applicable sterilization method | Ethylene oxide sterilization |
| Testing | Method* | Result |
|---|---|---|
| Cytotoxicity | ISO10993-5*, ISO10993-5, ② | Negative |
| Sensitization | ISO10993-10*, ISO10993-10, ① | Negative |
| Acute systemic toxicity | ISO10993-11*, ISO10993-11, ① | Negative |
| Pyrogenicity | ISO10993-11*, ISO10993-11, ① | Negative |
| Hemolysis | ISO10993-4*, ISO10993-4, ① | Negative |
| Intracutaneous injection | ISO10993-10*, ISO10993-10, ① | Negative |
| Reverse mutation | ISO10993-3 | Negative |
| Chromosomal aberration | ISO10993-3 | Negative |
| Implantation for 2 and 4 weeks | ISO10993-6 | Negative |
| Subchronic toxicity for 28-day continuous venous administration |
ISO10993-11 | Negative |
① “Guidance for Specific Biological Tests Relevant to the Principles Issued by the Notification Iyakushinhatsu No. 0213001”, Pharmaceutical and Food Safety Bureau, Japanese Ministry of Health, Labour and Welfare, Memorandum Medical Device Review No.36, March 19, 2003
② “Revision of the Basic Principles of Biological Safety Assessment Required for Medical Device Manufacturing and Sales Approval Applications(No.1, Yakuseikishinhatsu 0106)”issued by Medical Device Evaluation and Management Division, Pharmaceutical and Food Safety Bureau, Japanese Ministry of Health, Labour and Welfare, January 6, 2020
※ Tested according to “Good Laboratory Practice Standard Ordinance for Nonclinical Laboratory Studies on Safety of Medical Devices”, Japanese Ministry of Health, Labour and Welfare, Ordinance No. 37, March 23, 2005
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