Catheter distal assembly with pull wires
First Claim
Patent Images
1. A probe assembly, comprising:
- an outer member including a wall defining an interior bore having a distal end and a proximal end;
an elongate body, defining a distal portion, a distal end, a proximal end, an interior and an exterior, carried within the outer member, the distal portion of the elongate body including at least one operative element, the interior of the elongate body having a flexible spline carried therein and extending from adjacent the distal end toward the proximal end, the flexible spline defining a first stiffness; and
a control element defining a distal portion extending into the distal end of the elongate body and operably connected to the flexible spline at a location within the interior of the elongate body such that a portion of the control element is aligned with the distal end of the elongate body, and a proximal portion extending along the exterior of the elongate body within the outer member toward the proximal end of the outer member, at least the portion of the control element aligned with the distal end of the elongate body defining a second stiffness, the second stiffness being less than the first stiffness.
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Abstract
A catheter assembly having a sheath, which includes a side wall enclosing an interior bore, and a distal region. The assembly also has a bendable catheter tube, which is carried for sliding movement in the interior bore. A pull wire also runs through the interior bore of the sheath, preferably within a lumen. The catheter tube has a distal portion with a coupling which joins the distal portion of the catheter tube and the distal portion of the pull wire. Relative movement of the pull wire and the sheath causes bending of the catheter tube outwardly through the opening, in response to sliding movement of the catheter tube within the interior bore toward the distal region of the sheath.
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Citations
26 Claims
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1. A probe assembly, comprising:
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an outer member including a wall defining an interior bore having a distal end and a proximal end; an elongate body, defining a distal portion, a distal end, a proximal end, an interior and an exterior, carried within the outer member, the distal portion of the elongate body including at least one operative element, the interior of the elongate body having a flexible spline carried therein and extending from adjacent the distal end toward the proximal end, the flexible spline defining a first stiffness; and a control element defining a distal portion extending into the distal end of the elongate body and operably connected to the flexible spline at a location within the interior of the elongate body such that a portion of the control element is aligned with the distal end of the elongate body, and a proximal portion extending along the exterior of the elongate body within the outer member toward the proximal end of the outer member, at least the portion of the control element aligned with the distal end of the elongate body defining a second stiffness, the second stiffness being less than the first stiffness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A probe assembly, comprising:
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an outer member including a wall defining an interior bore having a distal end and a proximal end; an elongate body, defining a distal portion, a distal end, a proximal end and an exterior, carried within the outer member, the distal portion of the elongate body including at least one operative element, the elongate body further including a flexible spline extending from adjacent the distal end toward the proximal end, the flexible spline defining a first stiffness and a first cross-sectional shape over a substantial portion thereof and a second cross-sectional shape over a relatively small portion thereof; and a control element defining a distal portion extending into the distal end of the elongate body and operably connected to the flexible spline such that a portion of the control element is aligned with the distal end of the elongate body, and a proximal portion extending along the exterior of the elongate body within the outer member toward the proximal end of the outer member, at least the portion of the control element aligned with the distal end of the elongate body defining a second stiffness, the second stiffness being less than the first stiffness. - View Dependent Claims (22, 23, 24)
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25. A probe assembly, comprising:
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an outer member including a wall defining an interior bore having a distal end and a proximal end; an elongate body, defining a distal portion, a distal end, a proximal end and an exterior, carried within the outer member, the distal portion of the elongate body including at least one operative element, the elongate body further including a flexible spline extending from adjacent the distal end toward the proximal end, the flexible spline defining a first stiffness; and a control element defining a distal portion extending into the distal end of the elongate body and operably connected to the flexible spline by a crimp tube such that a portion of the control element is aligned with the distal end of the elongate body, and a proximal portion extending along the exterior of the elongate body within the outer member toward the proximal end of the outer member, at least the portion of the control element aligned with the distal end of the elongate body defining a second stiffness, the second stiffness being less than the first stiffness. - View Dependent Claims (26)
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Specification