PROCESS FOR THE MANUFACTURE OF BLACKENED SURGICAL NEEDLES

In a process for the manufacture of blackened surgical needles, unfinished needles produced from a chromium-containing steel are dipped into an acidic aqueous solution with a chromium (VI) compound. The solution has a temperature in the range from 10 DEG C to 40 DEG C, preferably in the range from 1...

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Bibliographische Detailangaben
Hauptverfasser:	RUTHENBERG, JUERGEN, HINSCH, BERNHARD, HUENDORF, UWE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIAGNOSIS DIFFUSION TREATMENT OF METALLIC MATERIAL HUMAN NECESSITIES HYGIENE IDENTIFICATION INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MEDICAL OR VETERINARY SCIENCE METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION SURGERY
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Beschreibung
Zusammenfassung:	In a process for the manufacture of blackened surgical needles, unfinished needles produced from a chromium-containing steel are dipped into an acidic aqueous solution with a chromium (VI) compound. The solution has a temperature in the range from 10 DEG C to 40 DEG C, preferably in the range from 18 DEG C to 25 DEG C.