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US 9,849,268 B2Granted
Catheter having flat beam deflection tip with fiber puller members
AssigneeBiosense Webster (Israel) Ltd.
InventorJose Jimenez
Life of this patent
Estimating the term…
Abstract
A catheter has a metal deflection beam with rectangular cross-section and one or two fiber puller members for predictable on-plane bi-directional deflection. Each fiber puller member is anchored at its distal end to a respective surface of the beam by a metal ferrule that is crimped onto the distal end. The ferrule is shaped to provide a flat outer underside that can lie flat against a beam surface and a thin planar distal section that is welded to the beam. With a distal end of the beam sandwiched between the thin planar distal section of two ferrules, the ferrules and the beam can be welded together by a single laser pulse.
Claims17
A catheter, comprising:
- an elongated catheter body comprising a first tubular structure having a first central lumen, a distal end and a proximal end;
- a deflectable section having a second tubular structure having a second central lumen, and a proximal end that is distal of the proximal end of the catheter body;
- a control handle proximal of the catheter body;
- a flat beam having first and second opposing surfaces, the flat beam extending through at least the second central lumen of the deflectable section and at least partially into the central lumen of the catheter body;
- first and second brackets defining a joint between the deflectable section and the catheter body, a portion of the flat beam extending through the first and second brackets, the first bracket being affixed to a first side of the flat beam, and the second bracket being affixed to a second side of the flat beam;
- at least one fiber puller member extending from the catheter body and through the deflectable section, the at least one fiber puller member having a distal end;
- and
- an anchor member anchoring the distal end of the at least one fiber puller member to the first surface of the beam, the anchor member having:
- a ferrule comprising:
- a lumen, the distal end of the at least one fiber puller member extending into the lumen and through only a proximal portion of the ferrule;
- a thin planar distal portion devoid of the fiber puller member;
- and
- a flat outer underside spanning both the thin planar distal portion and the proximal portion of the ferrule, the flat outer underside adapted to abut against the first surface of the beam;
- and
- a weld formation between the thin planar distal portion and the first surface of the beam.
12 more elements
A catheter, comprising:
- an elongated catheter body comprising a first tubular structure having a first central lumen, a distal end and a proximal end;
- a deflectable section having a second tubular structure having a second central lumen, and a proximal end that is distal of the proximal end of the catheter body;
- a control handle proximal of the catheter body;
- a flat beam having first and second opposing surfaces, the flat beam extending through at least the second central lumen of the deflectable section and at least partially into the central lumen of the catheter body;
- first and second brackets defining a joint between the deflectable section and the catheter body, a portion of the flat beam extending through the first and second brackets, the first bracket being affixed to a first side of the flat beam, and the second bracket being affixed to a second side of the flat beam;
- first and second fiber puller members extending from the catheter body and through the deflectable section, each puller member having a respective distal end;
- and
- first and second anchor members anchoring the distal end of the respective fiber puller member to the first and second surfaces, respectively, of the beam, each of the first and second anchor members having:
- a ferrule comprising:
- a lumen, the distal end of the respective puller member extending into the lumen and through only a proximal portion of the ferrule;
- a thin planar distal portion devoid of the respective fiber puller member;
- and
- a flat outer underside spanning both the thin planar distal portion and the proximal portion of the ferrule, the flat outer underside adapted to abut against the respective surface of the beam;
- and
- a single laser pulse weld formation, a portion of the weld formation being between each thin planar distal portion and the respective surface of the beam.
12 more elements
Dependencies are inferred from the claim text.