Intravascular catheter having an dual, offset expandable incising portion, related systems and methods

An intravascular catheter device for treating a zone of attention located within a

• vascular passageway, said intravascular catheter device comprising:
• a handle assembly comprising a motor or knob and a first control member;
• a rotational sleeve comprising braided coil reinforced tubing and having a longitudinal axis, wherein said rotational sleeve is connected to the motor or knob such that activation of said motor or manual rotation of the knob causes rotational movement of said rotational sleeve about the longitudinal axis;
• an inner sleeve disposed within the rotational sleeve and axially slidable therein;
• and
• a first and second expandable, each comprising:
• a first common end portion, wherein the first common end portion of the first expandable portion is connected to the rotational sleeve such that rotational movement of said rotational sleeve causes rotational movement of the first expandable portion;
• a second common end portion distal to the first common end portion, wherein the second common end portion of the second expandable portion is connected to the inner sleeve;
• struts extending between the first and second common end portions and moveable between a first position and a second position where the struts are moved outward from the first position;
• and
• at least one incising members each provided at least one of the struts and extending outward therefrom;
• wherein the second expandable portion is positioned distal to the first expandable portion;
• wherein the struts of the second expandable portion are radially offset from the struts of the first expandable portion;
• wherein the control member is mechanically connected to the inner sleeve for causing the axial sliding movement of the inner sleeve;
• and
• wherein the second expandable portion is coupled to the first expandable portion such that rotational of the first expandable portion causes rotation of the second expandable portion and axial movement of the inner sleeve cause the struts of the first and second expandable portions to move between the first and second positions.

An intravascular catheter device for treating a zone of attention located within a

• vascular passageway, said intravascular catheter device comprising:
• a handle assembly comprising a motor or knob;
• a catheter tube extending from the handle assembly;
• a rotational sleeve disposed within the catheter tube, comprising braided coil reinforced tubing, and having a longitudinal axis, wherein said rotational sleeve is connected to the motor or knob such that activation of said motor or manual rotation of the knob causes rotational movement of said rotational sleeve about the longitudinal axis;
• and
• a first and second expandable, each comprising:
• a first common end portion, wherein the first common end portion of the first expandable portion is connected to the catheter tube;
• a second common end portion distal to the first common end portion, wherein the second common end portion of the second expandable portion is connected to the rotational sleeve such that rotational movement of said rotational sleeve causes rotational movement of the second expandable portion;
• struts extending between the first and second common end portions and moveable between a first position and a second position where the struts are moved outward from the first position;
• and
• at least one incising members each provided at least one of the struts and extending outward therefrom;
• wherein the second expandable portion is positioned distal to the first expandable portion;
• wherein the struts of the second expandable portion are radially offset from the struts of the first expandable portion;
• wherein the rotational sleeve is axially slidable within the catheter tube;
• and
• wherein the second expandable portion is coupled to the first expandable portion such that rotational of the second expandable portion causes rotation of the first expandable portion and axial movement of the rotational sleeve causes movement of the struts of the first and second expandable portion between the first and second positions.