Irritation generator

A generator and electrical stimulation technology, applied in the direction of cardiac stimulators, internal electrodes, electrodes, etc., can solve the problems of easy depletion of pacemaker batteries, affecting the long-term stability of stimulation parameters, and increased tissue reactivity, so as to reduce the extreme Chemopotential and polarization impedance, reducing adverse reactivity, lowering stimulation threshold effect

Pending Publication Date: 2017-06-30
刘志忠 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this method of pacing cardiac tissue with a fixed cathode electrode and direct current pulses, a polarization potential will inevitably be formed at the electrode tip, resulting in polarization impedance and affecting the stimulation threshold.
When electrodes with high impedance and small surface area are used, the polarization impedance can reach more than 70% of the entire system impedance, which reduces the pacing efficiency of the system and the battery of the pacemaker is easily exhausted
At the same time, unidirectional DC pulses cause increased tissue reactivity and increased fibrosis, which affects the long-term stability of stimulation parameters.

Method used

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Embodiment 1

[0027] Such as figure 1 As shown, the first aspect of the present invention provides a stimulus generator, which includes at least two stimulus pulse output units and at least one sensing and control unit. Such as figure 2 , the pulse signal output end of the stimulation pulse output circuit is connected to the stimulation electrode through a triode and a lead wire, the sensing control circuit is located between the triode and the stimulation electrode and is also electrically connected to the stimulation pulse generating circuit respectively, and the sensing The control circuit is used for sensing the level signal of the stimulated body and controlling the stimulation pulse generation circuit to send pulse signals to the stimulation electrodes.

[0028] As a preference of this embodiment, the pulse signal output end of the stimulation pulse generating circuit is connected to the base of the triode, and the emitter of the triode is connected to the stimulation electrode thro...

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Abstract

The invention relates to the field of medical instruments, and discloses an irritation generator. The irritation generator comprises at least two pulse output circuits and at least one perception control circuit. The irritation generator can alternately give out irritation pulse current in opposite directions equal to electrode polarity alternate change give-out irritation pulses. The electrode polarity alternate change give-out irritation pulses can greatly reduce the adverse reactivity of irritated tissue, reduce tissue polarization potential and polarization impedance and reduce an irritation threshold value. Meanwhile, the threshold value automatic capture function of the irritation generator can be conveniently implemented, and the service life of a battery of the irritation generator is prolonged.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a stimulus generator. Background technique [0002] The traditional cardiac stimulation system uses the stimulating electrode as the cathode, and sends out direct current pulses to stimulate the myocardium. The current flows out of the cathode, passes through human tissues and body fluids, and then flows into the anode, forming a circuit. For this method of pacing cardiac tissue with a fixed cathode electrode and direct current pulses, a polarization potential will inevitably be formed at the electrode tip, resulting in polarization impedance and affecting the stimulation threshold. When electrodes with high impedance and small surface area are used, the polarization impedance can reach more than 70% of the entire system impedance, which reduces the pacing efficiency of the system and the pacemaker battery is easily exhausted. At the same time, the unidirectional DC pulse caused i...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): A61N1/362A61N1/08A61N1/05
CPCA61N1/05A61N1/0568A61N1/0587A61N1/08A61N1/362A61N1/3625
Inventor刘志忠刘逸
Owner刘志忠