| 摘要 |
An electrophysiological mapping device includes an outer catheter (8), an inner catheter (6) slidable within the outer catheter, and an electronic activation and recording device (4) for electrically activatin g electrodes (11) on the inner catheter and/or recording electric signals received by the electrodes. The distal end of the inner catheter comprises a plurality of arms (9) that cary electrodes. The arms bow outwardly upon extension of the inner catheter from the outer catheter to fo rm a three-dimensional shape. Each arm has a spine (25) of a super-elastic material. Each spine is semicircular in section, and is dispos ed within a portion of a flexible sheath (18), the electrode lead wires being disposed in the rest of the sheath. The electrodes are formed fr om the ends of the insulated electrode lead wires (20) which pass through the sheath, are wrapped around the sheath and then stripped of their insulation.
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