Insertion assembly for electrophysiology catheter and electrophysiology catheter

Abstract

Disclosed are an insertion assembly for an electrophysiology catheter and the electrophysiology catheter, relating to the field of electrophysiology catheters. The insertion assembly comprises: an outer tube body (210), the outer tube body (210) comprising an outer bending adjustment section (211) and an outer main body section (212), wherein the outer bending adjustment section (211) is located at the distal end of the outer tube body (210), and the outer main body section (212) is connected to the proximal end of the outer bending adjustment section (211); and an inner tube body (220) configured to transmit torque, the inner tube body (220) being nested in the outer tube body (210). The inner tube body (220) comprises an inner bending adjustment section (221) and an inner main body section (222), wherein the inner bending adjustment section (221) is located at the distal end of the inner tube body (220), and the inner main body section (222) is connected to the proximal end of the inner bending adjustment section (221) and is configured to transmit torque to the inner bending adjustment section (221). The insertion assembly further comprises a perfusion tube (230) configured to bend with the inner bending adjustment section (221), wherein the perfusion tube (230) sleeves the inner bending adjustment section (221), the perfusion tube and the inner bending adjustment section (221) form a fluid channel (250) therebetween for the passage of fluid, and the fluid channel (250) is directed to the exterior of the distal end side of the insertion assembly. The insertion assembly further comprises a liquid supply tube (240), wherein the distal end of the liquid supply tube (240) is in communication with the proximal end of the fluid channel (250). The insertion assembly can enable the catheter to meet a fluid perfusion requirement when a drive rod is required to rotate.

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