High torque catheter and methods thereof
First Claim
Patent Images
1. A high torque catheter comprising:
- a flexible catheter shaft having a distal shaft section, a proximal shaft section and a middle shaft section, wherein each shaft section has a distal end and a proximal end, said flexible catheter shaft having at least one lumen extending between the distal end of the distal shaft section and the proximal end of the proximal shaft section;
a handle secured at the proximal end of the proximal shaft section; and
at least one shaft section comprising a high torque transmission assembly for transmitting torque along said at least one shaft section, said high torque transmission assembly comprising a slit tubular element that has a plurality of slits on said slit tubular element, wherein arrangement of said plurality of slits with respect to a longitudinal axis of said shaft section is selected from the group consisting of an angled slit, a curved slit, and a combination of a perpendicular slit and an angled slit.
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Abstract
A flexible catheter shaft suitable for inserting into a body of a patient comprising a high torque transmission assembly of a slit tubular element that has either a plurality of slits or at least one continuously spiraling slit on said slit tubular element and has sufficient torque properties ensuring that a substantial fraction of the rotational and displacement forces provided along said flexible catheter shaft are translated to rotational and displacement forces at a distal end of said flexible catheter shaft.
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Citations
18 Claims
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1. A high torque catheter comprising:
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a flexible catheter shaft having a distal shaft section, a proximal shaft section and a middle shaft section, wherein each shaft section has a distal end and a proximal end, said flexible catheter shaft having at least one lumen extending between the distal end of the distal shaft section and the proximal end of the proximal shaft section;
a handle secured at the proximal end of the proximal shaft section; and
at least one shaft section comprising a high torque transmission assembly for transmitting torque along said at least one shaft section, said high torque transmission assembly comprising a slit tubular element that has a plurality of slits on said slit tubular element, wherein arrangement of said plurality of slits with respect to a longitudinal axis of said shaft section is selected from the group consisting of an angled slit, a curved slit, and a combination of a perpendicular slit and an angled slit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A high torque catheter comprising:
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a flexible catheter shaft having a distal shaft section, a proximal shaft section and a middle shaft section, wherein each section has a distal end and a proximal end, said flexible catheter shaft having at least one lumen extending between the distal end of the distal shaft section and the proximal end of the proximal shaft section;
a handle secured at the proximal end of the proximal shaft section; and
at least one shaft section comprising a high torque transmission assembly for transmitting torque along said at least one shaft section, said high torque transmission assembly comprising a slit tubular element that has at least one continuously spiraling slit on said slit tubular element and has sufficient torque properties ensuring that a substantial fraction of the rotational and displacement forces provided along said at least one shaft section are translated to rotational and displacement forces at the distal end of said shaft section of the flexible catheter shaft, wherein the slit tubular element has a plurality of parallel slit members resulting from the at least one continuously spiraling slit, wherein at least a portion of at least one pair of adjacent slit members is secured together. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for operating a high torque catheter within a body of a patient, the high torque catheter comprising a flexible catheter shaft having a plurality of shaft sections, wherein at least one shaft section comprises a high torque transmission assembly for transmitting torque along said at least one shaft section, said high torque transmission assembly comprising a slit tubular element that has a plurality of slits on said slit tubular element, wherein arrangement of said plurality of slits with respect to a longitudinal axis of said shaft section is selected from the group consisting of an angled slit, a curved slit, and a combination of a perpendicular slit and an angled slit;
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the method comprising the steps of;
(a) percutaneously introducing the high torque catheter through an opening of the body of the patient;
(b) approaching the high torque catheter to a target tissue of the patient by transmitting rotational and displacement forces through the at least one shaft section of the flexible catheter shaft; and
(c) positioning the high torque catheter at the target tissue for diagnostic and/or therapeutic tissue treatment.
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Specification