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Electrode catheter

A probe and electrode technology, which is applied in the field of electrode probes, can solve problems such as inability to perform deflection operations at the front end of the probe body, broken wires, etc., and achieve good push-in characteristics, excellent operability, and good torque transmission. Effect

Inactive Publication Date: 2015-04-01
JAPAN LIFELINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In such a case, these guide wires are fixed to the proximal end of the needle body so that they cannot move in the axial direction. Therefore, for example, when the front end of the probe body is deflected, the wires may be pulled due to tension. Circumstances that cause the wire to break
[0018] In addition, when the adhesive for bonding the proximal end of the needle body and the operating handle is attached to the stretched lead wire (lead wire for the front end deflection operation of the probe needle body) extending from the opening of the proximal end portion of the needle body, In this case, the stretching wire is fixed to the proximal end of the needle body and cannot move in the axial direction. As a result, the deflection operation of the front end of the probe body cannot be performed.

Method used

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no. 1 approach 》

[0066] Figure 1 to Figure 9 The electrode probe 100 of this embodiment shown is used, for example, to measure the electric potential of the heart's pulmonary vein or the like.

[0067] The electrode probe 100 includes: a probe needle body 10; an operating handle 20 connected to the base end side of the probe needle body 10; a connector 70 installed inside the operating handle 20; a front end electrode 31, It is installed on the front end of the probe needle body 10; three ring-shaped electrodes 32, 33, 34 are installed on the outer periphery of the front end part of the probe needle body 10; four wires 41, 42, 43, 44, wire The front ends of 41, 42, 43, 44 are respectively connected to the front electrode 31 and the ring electrodes 32, 33, 34, and the wires 41, 42, 43, 44 extend axially inside the probe body 10 and reach the operating handle 20, the rear ends of the wires 41, 42, 43, 44 are connected to the connector 70; the stretching lead 50, the front end of the stretching...

no. 2 approach 》

[0183] Figure 12 to Figure 15 The electrode probe 150 shown is used to measure the potential of the heart's pulmonary vein and other parts, and the electrode probe 150 has: a probe needle body 15; Side connection; connector (illustration omitted), which is installed in the inside of the operating handle 25; front-end electrode 31, which is installed in the front end of the probe needle body 15; seven ring-shaped electrodes 32, 33, 34, 35 , 36, 37, 38, they are installed in the outer periphery of the front end part of probe needle body 15; Eight wires 41, 42, 43, 44, 45, 46, 47, 48, their front ends are connected with front end electrode 31 and The ring electrodes 32-38 are connected, and eight wires 41, 42, 43, 44, 45, 46, 47, 48 extend axially inside the probe body 15, and the eight wires 41, 42, 43, 44, The rear end of 45, 46, 47, 48 is connected with the connector; the core lead wire 55, the front end of the core lead wire 55 is fixed on the front end electrode 31, the co...

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Abstract

An electrode catheter is provided with: a catheter shaft (10); an operating handle (20) provided with a connector (70); a tip electrode (31); ring-shaped electrodes (32-34); lead wires (41-44) connected to the tip electrode (31) and the ring-shaped electrodes (32-34), respectively; and a pull wire (50) affixed to the tip electrode (31). The catheter shaft (10) comprises: a shaft proximal end section (11) comprising a metallic tube; a shaft distal end section (12) comprising a resinous tube; and a resinous coating layer (13) for covering the outer peripheries of both the shaft proximal end section (11) and the shaft distal end section (12). A lead wire protective tube (61) which comprises a soft tube and a wire protective tube (62) which comprises a soft tube are inserted in the shaft proximal end section (11). In the electrode catheter, the lead wires extending from the shaft proximal end section into the operating handle are not damaged or broken by coming into contact with the edge of the opening end of the shaft proximal end section.

Description

technical field [0001] The present invention relates to electrode probes. Background technique [0002] Electrode probes are known as medical devices used for diagnosing or treating cardiac arrhythmia. [0003] As an electrode probe for measuring the electric potential of the pulmonary vein and the like of the heart, the present applicant proposes an electrode probe comprising: a probe needle body and an operating handle connected to the base end side of the probe needle body , a circular ring-shaped probe tip connected to the tip side of the probe body, a plurality of ring-shaped electrodes attached to the outer periphery of the probe tip, and a tip electrode attached to the tip of the probe tip (Refer to Patent Document 1). [0004] The probe body (probe main body) constituting the electrode probe described in Patent Document 1 is formed by comprising a relatively rigid resin tube (first tube) and a relatively low rigid flexible resin tube (second tube). Uniluminal cons...

Claims

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Application Information

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IPC IPC(8): A61M25/14A61M25/092
CPCA61B5/6852A61M25/0136A61M25/0138A61M25/0147A61B18/1492A61B2017/003A61B2018/1467A61B5/287A61B18/14A61B5/283A61B2562/0209
Inventor 小林洋平
Owner JAPAN LIFELINE CO LTD
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