Electrochemical and chemical methods for production of non-throm

Details Electrochemical and chemical methods for production of non-throm Electrochemical and chemical methods for production of non-throm

1973-09-21

1977-08-02

Edmundson, F.C.

Chemistry: electrical and wave energy

Apparatus

Coating, forming or etching by sputtering

3 1, 2041291, A61F 122, A61F 124, C25F 104

Patent

active

040387020

ABSTRACT:
A method of improving the operation of metal heart valves according to which the surfaces of the heart valves are treated to render more negative the electrochemical potential which the valve part will exhibit in blood or a blood-like fluid and to minimize surface non-homogenities. The surface is treated to obtain more particularly a negative surface potential which is generally homogeneous and more negative than + 100 mv/NHE by chemical polishing, electrochemical polishing or cathode cleaning.

REFERENCES:
patent: 2412186 (1946-12-01), Whitehouse et al.
patent: 2429676 (1947-10-01), Faust
patent: 2440715 (1948-05-01), Faust et al.
patent: 3491756 (1970-01-01), Bentov
patent: 3609768 (1971-10-01), Ayres
patent: 3703452 (1972-11-01), Beroff et al.
patent: 3723754 (1973-03-01), Murayama et al.
Prosthetic Heart Valves, by Brewer et al., pp. 198-202, pub. by Chas. C. Thomas, Springfield, Ill. (1969).
Young et al., Metal Finishing, May 1942, pp. 237, 238.

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