Catheter and the method of making

Coating processes – Medical or dental purpose product; parts; subcombinations;... – Particulate or unit-dosage-article base

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128349R, 427 44, B05D 306

Patent

active

040556824

ABSTRACT:
A silicone catheter is rendered hydrophilic by contacting it with N-vinyl pyrrolidone (NVP) in bulk or in solution and exposing the catheter and NVP to ionizing radiation at high dose rate. Penetration of the NVP beyond a thin surface layer is prevented by controlling the dose of ionizing radiation and the concentration of NVP.

REFERENCES:
patent: 3281263 (1966-10-01), Priesing et al.
patent: 3566874 (1971-03-01), Shepherd et al.
patent: 3700573 (1972-10-01), Laizier et al.
Yasuda et al., "Journ. Poly. Sci.", Part A, vol. 2, pp. 5093-5098 (1964).

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