A wireless communication circuit structure and method applied to implantable cardiac pacemaker

Abstract

The invention discloses an in-vivo special wireless communication circuit structure and method applied to an implantable cardiac pacemaker. The circuit structure can meet the following functions: an in-vitro program controller can transmit preset parameters to a function device implanted in vivo through a communication circuit; and the function device implanted in vivo can transmit hardware information, various parameters, battery status and stored data which are stored in an MCU and electrocardiogram data detected by a cardiac pacemaker special circuit to an in-vitro program controller through the wireless communication circuit. The circuit structure can meet the following characteristics: distance of communication with the in-vitro program controller is larger than 10cm under the circumstance of passing through a human body and a titanium shell; the rate of data transmission from in vivo to in vitro is relatively high; an error rate of the communication circuit is smaller than one hundred thousandth; the standby power consumption of the communication circuit is extremely low; the working power consumption of the communication circuit can meet a normal life requirement of pacemaker; and at a 37-degree body fluid environment temperature, communication is performed continuously for half an hour, and a temperature rise of the surface of the titanium shell is smaller than 2 degrees.

Description

technical field [0001] The invention belongs to the field of biomedical application-specific integrated circuits, and in particular relates to a wireless communication circuit structure applied to implantable cardiac pacemakers. Background technique [0002] An implantable cardiac pacemaker is an implanted medical device whose working environment is inside the human body. It is usually required that these devices have sufficient information processing capabilities to provide data telemetry. Now, with the development of engineering technology, most of the implantable devices around the world can be programmed in the body by an external program controller to obtain better working efficiency. Implantable cardiac pacemakers are powered by a single non-replaceable battery, generally required to be able to work continuously in the human body for 10 years or more, and must have extremely low power consumption to prolong the service life and reduce heat dissipation. In addition, in...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to meet various current functional requirements, provide a wireless communication circuit structure and method applied to implantable cardiac pacemakers, overcome the area, The problem of power consumption, and the heating problem of the existing scheme to transmit ECG data, provide a set of feasible communication circuit module structure for implantable cardiac pacemaker ASIC

Images