Elongated interventional device for optical shape sensing
An optical shape sensing, slender technology, used in applications, medical science, computer-aided surgery, etc., to solve problems such as difficult device retention and limited operability in rotational motion
Active Publication Date: 2018-08-21
KONINKLJIJKE PHILIPS NV
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Problems solved by technology
However, such fixation of the elongated interventional device limits its maneuverability, especially for rotational movement of the elongated interventional device about its longitudinal extension.
Due to this fixation, torsional stress builds up in the elongated interventional device and makes rotational movement difficult and makes it difficult to maintain the device in the intended (rotational) position
Method used
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[0027] figure 1 An interventional system comprising an elongated interventional device 1 is shown schematically and exemplarily. The elongated interventional device may be configured as a catheter, guidewire, endoscope or similar device inserted by a physician into the patient's body 7 when the patient's body 7 is positioned within the examination region 5 during an interventional procedure. Within the examination area 5, the patient's body may be positioned on a patient table 8 or similar support.
[0028] In order to determine the shape of the elongated interventional device 1 during the interventional procedure, optical shape sensing techniques are employed. Accordingly, the optical shape sensing fiber 9 is integrated into the elongated interventional device 1 such that the optical fiber 9 extends preferably along the longitudinal extension of the elongated interventional device 1 , preferably but not necessarily over the entire length of the elongated interventional devic...
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The invention relates to an elongated interventional device (1), configured to receive an optical shape sensing fiber (9) and comprising (i) an elongated proximal section (22) including at fixation element (24) at its proximal end, the fixation element (24) being connectable to a reception (25) at a predetermined location (3); and (ii) an elongated distal section (21) connected to the proximal section (22). The proximal section (22) has a lower torsion stiffness than the distal section (21) and comprises at least two substantially co-axial tubes, the outer tube having a lower torsion stiffnessthan an inner tube. Thus, the elongated interventional device (1) can be affixed to the predetermined location in order to determine its shape and position by means of optical shape sensing without affecting the device's maneuverability, particularly with respect to rotational movements of the distal section (21).
Description
technical field [0001] The present invention relates to an elongated interventional device capable of positioning by optical shape sensing, and to an interventional system comprising the elongated interventional device. Background technique [0002] In certain interventional procedures, a physician guides an elongated interventional device, such as a catheter or guide wire, to a target location within a patient, where the position of the elongated interventional device can be determined by optical shape sensing. In optical shape sensing, an optical fiber may be integrated into the elongated interventional device, and light reflected from a strain sensor included in the optical fiber is measured to determine the shape of the optical fiber, and thus the elongated interventional device. [0003] Based on the shape of the elongated interventional device, the position of the interventional device can be determined in a certain frame of reference. To this end, the proximal end se...
Claims
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IPC IPC(8): A61B90/00A61M25/00
CPCA61M25/0053A61M25/0054A61M2025/0004A61M2025/0059A61B2090/364A61B2034/2061A61M25/005A61B90/37A61M2025/0175
Inventor F·R·A·范德林德D·P·努南M·P·M·克努普斯B·马赛利斯
Owner KONINKLJIJKE PHILIPS NV