Intercardiac defibrillation catheter system

Abstract

Disclosed is an intercardiac defibrillation catheter system provided with a defibrillation catheter (100) and a power source device (700); wherein the defibrillation catheter (100) is provided with a memory (110) comprising an initial connection information storage unit (112) and an event information storage unit (113); and the power source device (700) is provided with an arithmetic processing unit (75) which comprises an output circuit (751) of direct current voltage, a memory (752) for storing a usage time limit, and an internal clock (753), and which controls writing to and reading from the memory (110) of the defibrillation catheter (100). The arithmetic processing unit (75), for each event that has been written to the event storage unit (113) of the memory (110) of the defibrillation catheter (100), performs control so that the next event is not executed if the elapsed time between the connection time that has been written to the initial connection information storage unit (112) of the memory (110) of the defibrillation catheter (100) and the time that the first-mentioned event has been performed has been determined to exceed the usage time limit.

Description

technical field [0001] The present invention relates to an intracardiac defibrillation probe system, and specifically relates to a probe system including a defibrillation probe inserted into a cardiac cavity and a power supply device for applying a DC voltage to electrodes of the defibrillation probe. Background technique [0002] An external defibrillator (AED) is known as a defibrillator for eliminating ventricular fibrillation (for example, refer to Patent Document 1). [0003] In AED-based defibrillation therapy, electric energy is supplied to the patient's body by applying a DC voltage by attaching electrode pads to the patient's body surface. Here, the electric energy flowing from the electrode pads into the patient's body is usually 150 to 200 J, and part of it (usually about several to 20%) flows to the heart for defibrillation treatment. [0004] Patent Document 1: Refer to Japanese Patent Application Laid-Open No. 2001-112874 [0005] In addition, ventricular fib...

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Problems solved by technology

[0015] However, in such a control method, when the power supply unit is removed from the defibrillation probe, the time of connection is cleared, and by reconnecting the power supply unit, the time of reconnection becomes the starting point of the usage limit time, and it is possible to Start and move using time limit

[0016] In this case, it is also conceivable to assign a serial number that can be read by the power supply unit to the defibrillation probe, so that the power supply unit connected to the defibrillation probe stores the serial number. When the needle is reconnected, the time when the defibrillation probe is first connected is used as the starting point, and after the usage limit time has elapsed from this time, the defibrillation probe is controlled so that the defibrillation probe cannot be operated.

[0017] However, in such a control method, when not one power supply unit is connected to the defibrillation probe, for example, when a spare power supply unit is reconnected in the process, the defibrillation probe will be disabled in the reconnected power supply unit. The history information of the operation of the probe using the power supply unit connected first (the time when the power supply unit was first connected) is not stored, so the time of reconnection becomes the starting point, and it may be activated again from this time.

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