A sensor acquisition and processing system for an implantable cardiac pacemaker and a control method based on the system

Abstract

The invention discloses a sensor collection processing system of an implantable cardiac pacemaker and a control method based on the system, and belongs to the technical field of medical appliances. The sensor collection processing system comprises a filtering circuit, an amplification circuit, an analog-to-digital converter and a CPU (central processing unit), wherein analog signals output by an acceleration senor of a pacemaker are transmitted to the amplification circuit after being subjected to filtering by the filtering circuit, the analog signals amplified by the amplification circuit are converted into digital signals through the analog-to-digital converter, the digital signals are input into the CPU through the analog-to-digital converter, the CPU realizes the interaction with the MCU (micro control unit) of the pacemaker, and in addition, the CPU can control the sampling frequency of the analog-to-digital converter through outputting pulse signals at different frequencies. The sensor collection processing system of the implantable cardiac pacemaker and the control method based on the system can ensure that unnecessary power consumption can be reduced through automatically regulating the sampling frequency on the premise of no distortion of the collected moving sensor signals, so the service life of the cardiac pacemaker is effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a sensor acquisition and processing system for an implantable cardiac pacemaker and a control method based on the system. Background technique [0002] With the widespread application of cardiac pacemakers, a single fixed pacing frequency can no longer meet the needs of the majority of patients. Especially for patients with chronotropic dysfunction, due to reasons such as age, drugs or heart disease, their heart rate cannot rise with the increase of their own metabolic rate, which will lead to the inability to meet the metabolic needs of the body. If such patients are implanted with a pacemaker with a fixed pacing rate, the limited cardiac output will affect their quality of daily life. Therefore, cardiac pacemakers with frequency-adaptive pacing functions emerged as the times require, and have gradually become a must-have function for mainstream pacemakers i...

AI Technical Summary

Problems solved by technology

Therefore, this method of processing signals in different frequency bands at the same time must adopt a higher sampling frequency, and when the signal frequency is low, unnecessary power consumption cannot be avoided.

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