Radiographic opaque and conductive striped medical tubes

Details Radiographic opaque and conductive striped medical tubes Radiographic opaque and conductive striped medical tubes

1977-02-25

1978-08-08

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Forming electrical articles by shaping electroconductive...

128 2M, 128348, 138118, 252502, 252506, 252518, 264105, 264173, 264177R, A61M 2500

Patent

active

041057325

ABSTRACT:
A catheter or other medical tube is formed by extruding of a suitable thermoplastic with an integral stripe portion simultaneously formed by extruding of the same or a compatible plastic material into the wall of the tube. The integral stripe portion has dispersed therein a powdered conducting metal or carbon and an X-ray opaque powdered salt such as a bismuth or bromide salt. The completely different functioning pigments may be incorporated in sufficient quantities to provide reliable dual functions without disrupting or otherwise adversely affecting the strength and characteristic of the tube for the purposes intended in the medical art. The stripe portion is preferably crowned to extend the exterior surface from the contiguous body of the tube and thus further provide additional carrier for the mixture of the two different pigments. The conductive pigment is also partially opaque and thus generally a mixture of 85% conductive pigment and 15% X-ray opaque pigment produces an exceptionally satisfactory construction. The integrated dual functioning stripe portion produces a single medical tube creating the advantages of the individual tubes heretofor provided in the art and thus usable in widely varying applications.

REFERENCES:
patent: 2212334 (1940-08-01), Wallerich
patent: 2857915 (1958-10-01), Sheridan
patent: 2940126 (1960-06-01), Sheridan
patent: 3529633 (1970-09-01), Vaillancourt
patent: 3749134 (1973-07-01), Slingluff et al.
patent: 3847157 (1974-11-01), Caillouette et al.
patent: 3907955 (1975-09-01), Viennot

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