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US 11,891,548 B1Granted
Process for concentrically bonding tubes using a hot melt adhesive
AssigneeMdcm Solutions, LLC
InventorsScott T. Johnson, Frank Smaron, Steve Leseman
Life of this patent
Estimating the term…
Abstract
A tube used or medical or other purposes is concentrically bonded to an inner lining tube by sequentially inserting a core within the inner lining tube, creating an adhesive layer on the outer surface of the inner lining tube, inserting the inner lining tube and core into the lumen of the outer tube, and then activating the adhesive to bond the inner tune to the outer tube before removing the core.
Claims19
A process for concentrically bonding tubes comprising:
- a. providing a first outer tube having a first outside surface of a first outer diameter, and a first lumen defined by a first inside surface of a first inner diameter;
- b. providing a second tube made from a fluoropolymer and having a second outside surface of a second outer diameter, said second outer diameter being smaller than the first inner diameter, and a second lumen defined by a second inside surface of a second inner diameter;
- c. inserting a core into the second lumen and temporarily securing the second tube in place on the core;
- d. feeding the core and the second tube through an extrusion apparatus adapted to create an adhesive layer on the second outside surface;
- e. inserting the second tube into the first lumen so that the second outside surface is in face-to face registration with the first inside surface with the adhesive layer residing there between;
- and
- f. applying a heat source to melt the adhesive layer without damaging either of the first tube and the second tube, and then removing the heat source thereby allowing the adhesive layer to cool and form a bond between the first inside surface and the second outside surface.
4 more elements
A process for concentrically bonding tubes comprising:
- a. providing a first metal hypotube of a first predetermined length and having a first outside surface of a first outer diameter, and a first lumen defined by a first inside surface of a first inner diameter;
- b. providing a second tube of a second predetermined length, said second tube made from polytetrafluoroethylene (PTFE) and having a second outside surface of a second outer diameter, said second outer diameter being smaller than the first inner diameter, and a second lumen defined by a second inside surface of a second inner diameter;
- c. inserting a core into the second lumen and temporarily securing the second tube in place on the core;
- d. feeding the core and the second tube through an extrusion apparatus adapted to create an adhesive layer on the second outside surface;
- e. inserting the second tube into the first lumen so that the second outside surface is in face-to face registration with the first inside surface with the adhesive layer residing there between;
- and
- f. applying a heat source to melt the adhesive layer without damaging either of the first tube and the second tube, and then removing the heat source thereby allowing the adhesive layer to cool and form a bond between the first inside surface and the second outside surface.
4 more elements
Dependencies are inferred from the claim text.