Electrode catheter
A technology for electrode catheters and catheter shafts, applied in catheters, medical science, hollow probes, etc., can solve the problems of wire insulation damage and processing difficulties, and achieve the effect of easy manufacture and improved trimming
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no. 1 approach ＞
[0060] Figure 1 to Figure 5 The electrode catheter 100 of this embodiment shown is used to measure the electric potential of coronary arteries and the like of the heart.
[0061] This electrode catheter 100 includes a catheter shaft 10, annular electrodes 201 to 210 attached to the outer peripheral surface of the distal end portion 101 of the catheter shaft 10, and lead wires 301 to 310 respectively connected to the annular electrodes 201 to 210. The catheter shaft 10 is composed of The inner tube 11 of the lead wire lumen 11L and the outer tube 13 forming the lumen 12L through which the guide wires 301 to 310 are inserted together with the outer peripheral surface of the inner tube 11, and the outer tube 13 is made of resin over its entire length. The braided tube reinforced by braiding 135 is formed. On the tube wall of the outer tube 13 of the front end portion 101 of the catheter shaft 10, side holes 15 reaching the lumen 12L from the outer peripheral surface are formed a...
no. 2 approach ＞
[0118] Figure 6 is a side view showing an electrode catheter according to a second embodiment of the present invention, Figure 7A and Figure 7B Each is a cross-sectional view of a catheter shaft constituting the electrode catheter.
[0119] The electrode catheter 200 of this embodiment includes: a catheter shaft 60 having a multi-lumen structure having a distal end bending portion 601 and forming lumens 61L to 64L; a distal end electrode 71 connected to the distal end side of the catheter shaft 60; The ring-shaped electrodes 72-74 on the outer peripheral surface of the front-end flexure part 601 of the shaft 60, the wires 81 connected to the front-end electrode 71, the wires 82-84 respectively connected to the ring-shaped electrodes 72-74, in order to make the front end of the catheter shaft 60 The flexure 601 faces in the first direction ( figure 1 The direction shown by the middle arrow A) is bent so as to stretch the base end of the first operating wire 86, in order t...
no. 3 approach ＞
[0153] Figure 9 ~ Figure 12 The electrode catheter 500 of this embodiment shown is used to measure the electric potential of coronary arteries and the like of the heart.
[0154] In addition, in Figure 9 ~ Figure 12 in, use with Figure 1 ~ Figure 4 Portions denoted by the same reference numerals have the same structure as that of the electrode catheter of the first embodiment.
[0155] The electrode catheter 500 of this embodiment includes a catheter shaft 50, annular electrodes 201 to 210 attached to the outer peripheral surface of the distal end portion 501 of the catheter shaft 50, and lead wires 301 to 310 respectively connected to the annular electrodes 201 to 210. 50 is composed of an inner tube 11 having a guide wire lumen 11L, and an outer tube 53 forming a lumen 12L for inserting the guide wires 301 to 310 together with the outer peripheral surface of the inner tube 11. The outer tube 53 constituting the catheter shaft 50 is composed of a The front end portion 5...
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