Catheter
AssigneeNipro Corporation
InventorsHidenobu AKIHAMA, Hiroki WATANABE, Chiaki OTSUKA, Ryota KANKE
Life of this patent
Estimating the term…
Abstract
A catheter has a novel structure that solves problems such as local stiffness at a portion where an operation wire is connected. The catheter includes a main lumen and an operation lumen, and is operable as a result of an operation wire inserted through the operation lumen being fixed on a distal end side. A distal end tube is fastened in a butted state to a periphery of a distal end opening of the main lumen. The operation wire extending out of a distal end opening of the operation lumen is adhered to an outer circumferential surface of the distal end tube.
Claims11
A catheter comprising:
- a main lumen;
- an operation lumen;
- an operation wire inserted through the operation lumen, the operation wire being fixed on a distal end side such that the catheter is operable;
- and
- a distal end tube fastened in a butted state to a periphery of a distal end opening of the main lumen, wherein
- the operation wire extending out of a distal end opening of the operation lumen is adhered to an outer circumferential surface of the distal end tube.
A catheter comprising
- a braided tube forming a lumen, the braided tube comprising:
- a braided layer;
- an inside resin layer covering a radially inner side of the braided layer;
- and
- an outside resin layer covering a radially outer side of the braided layer, wherein
- at a distal end of the braided layer, the braided layer is not covered by the outside resin layer while a heat shrinkable tube is directly overlapped and fitted on the braided layer, and a covering layer made of resin covers the heat shrinkable tube.
-12. (canceled)
A catheter comprising a braided tube, wherein
- a suction lumen subjected to negative pressure and an operation lumen allowing an operation wire to be inserted are provided and extend in parallel,
- a braided layer is provided in an embedded state and surrounds both the suction lumen and the operation lumen, the suction lumen and the operation lumen being provided in an internal region surrounded by the braided layer, and
- a guide wire lumen configured to allow a guide wire to be inserted is provided in an external region outside the internal region surrounded by the braided layer.
Dependencies are inferred from the claim text.