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In-vitro percutaneous cardiac contractile force regulation

A technology of heart contraction and force adjustment, applied in the direction of cardiac stimulators, etc., can solve the problems of frequent battery replacement, trauma, inconvenience, etc., achieve the effect of convenient power supply, avoid trauma, and reduce operation difficulty

Inactive Publication Date: 2010-03-17
胡实凯
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The electrode placement process of this technology is traumatic, with greater risk and difficulty in operation; because the energy release is much higher than that of implanted pacemakers, the battery replacement is frequent and inconvenient

Method used

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  • In-vitro percutaneous cardiac contractile force regulation
  • In-vitro percutaneous cardiac contractile force regulation

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Experimental program
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Embodiment Construction

[0010] The ECG signal (4) detected by the ordinary electrocardiograph (3) through the skin detection electrode (1) is output to the trigger switch (5), and the trigger switch (5) is composed of three parts: one is a timing switch (6), according to The heart rhythm setting allows the trigger wave to appear (14), preventing misjudgment of interference waves and triggering in an unstable heart rhythm state; the second is the waveform trigger circuit (7), which sets the strength and slope according to the characteristics of the external ECG trigger wave (15); the third is a delay device (8), which sets the delay time (16) according to the relationship between the external trigger wave and the cardiac refractory period. The signal that satisfies the conditions of the timing switch (6) and the waveform trigger circuit (7) at the same time is determined as the trigger point (12), and under the action of the delay device (8), after a period of delay, it starts in the refractory period ...

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Abstract

The invention provides a technical scheme for in-vitro cardiac contractile force regulation. The myocardial contractile force can be strengthened by releasing percutaneous refractory period electricalstimulation on the heart in vitro, and the calculation of the refractory period is also performed in vitro. A trigger switch is connected with an in-vitro electrocardiograph (ECG); and an in-vitro electrical stimulator is controlled by the trigger switch. The technical scheme of the invention comprises the following steps: outputting the ECG signals detected in vitro to the trigger switch with the triggering conditions and delay time thereof being adjustable; delaying the ECG signals satisfying the triggering conditions; starting the trigger switch; and controlling the electrical stimulator to release the percutaneous refractory period electrical stimulation on the heart.

Description

Technical field [0001] The invention relates to a technical solution for releasing electrical stimulation of the refractory period to the heart in vitro so as to strengthen the contraction of the myocardium. Background technique [0002] At present, the well-known cardiac contractility modulation (cardiac contractility modulation, CCM) is to implant or insert electrodes into the heart, or into the esophagus, and release electrical stimulation during the refractory period, so as to strengthen myocardial contraction. The electrode placement process of this technology is traumatic, with greater risk and difficulty in operation; because the energy release is much higher than that of implanted pacemakers, the battery replacement is frequent and inconvenient. Contents of the invention [0003] In order to reduce the risks and inconveniences of current cardiac contractility regulation (CCM) in practical applications, the present invention uses the conductivity of the human body t...

Claims

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Application Information

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IPC IPC(8): A61N1/365
Inventor 胡实凯
Owner 胡实凯
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