Capillary assembly useful as connecting capillary
AssigneeProxeon Biosystems A/S
InventorOle Vorm
Life of this patent
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Abstract
There is provided a capillary assembly suitable for connecting various components of an analytical measuring device, for example a liquid chromatograph or a capillary electrophoresis device, to each other. Specifically, this involves reinforcing the fragile tubing by the addition of PEEK or steel sleeves and/or embedding the tubing in an injection-molded resin such that the tubing is not exposed directly to operator handling and manipulation. Further functional improvement is obtained by including additional components inside the resin. Thereby a versatile and robust capillary assembly is achieved.
Claims9
A method for producing a capillary assembly, preferably a fused silica assembly, said method comprising:
- introducing a capillary with sleeves that cover the capillary ends into a forming tool, said sleeves being adapted to closely fit the outer diameter of the capillary, and
- molding a plastic material, preferably an elastic plastic material, within the forming tool thereby coating the capillary and sleeves with the plastic material;
- wherein the plastic material exclusively coats the capillary and a part of the sleeves, leaving a non-coated area of the sleeves.
A capillary assembly comprising:
- a capillary, preferably a fused silica capillary, having a first end and a second end;
- sleeves covering the ends of the capillary, said sleeves being adapted to closely fit the outer diameter of the capillary;
- and
- a molded plastic coating, preferably from an elastic plastic material, exclusively coating the capillary and a part of the sleeves, leaving a non-coated area of the sleeves.
Dependencies are inferred from the claim text.