Glass test tube having protective outer shield
OwnerIsrael Steininventor
Life of this patent
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Abstract
An improved test tube with a glass inner surface, layer, or lining, and a protective outer shield (or layer) of a material that protects the test tube from accidental breakage. The protective shield may be of a color which indicates that it has breakage protection. In one embodiment, the protective shield is provided by plastic material which is coated or sprayed on the outer surface of the glass test tube. In another embodiment, the protective shield is provided by one or more layers of wrapped sheet material, such as polyester film. In a further embodiment, a glass tube is inserted into a plastic tube to provide such glass tube with breakage protection. The improved test tube is particularly useful in automatic analyzers that measure erythrocyte sedimentation rate.
Claims24
A test tube comprising:
- a first layer and a second layer, in which said second layer represents the inner layer of the test tube and second first layer represents the outer layer of the test tube, wherein said first layer is of plastic material, and said second layer is of glass material.
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A system for storing and shipping test tubes comprising:
- one or more of said test tubes, each of said test tubes having an inner glass layer and an outer plastic layer;
- and
- an electrostatic free container into which said one of more test tubes are received.
A sample container comprising:
- a glass test tube;
- and
- material formed or shaped upon said glass tube to cover at least a substantial outer portion thereof for protecting said glass test tube from accidental breakage, wherein said material allows passage of light or other radiation to a sample when contained in said glass test tube to enable optical analysis of said sample.
Dependencies are inferred from the claim text.