Program control apparatus and method capable of updating inside solidification software of heart pacemaker

Abstract

This invention relates to a program control apparatus and method capable of updating inside solidification software of heart pacemaker, which comprises an external programmed-control RF receive / send device, a pacemaker remote measurement circuit with bidirectional wireless data transmission to the programmed-control device and bidirectional connected to a MPU that comprises a random access memory for running variable and data buffer and a ROM to rewrite program and divide into three storage zones, the programmed-control parameter zone with pacemaker default mode, running parameters and edition information; the main program zone for current control software of the pacemaker, and the bootstrap program zone to rewrite pacemaker main program. It also comprises a program to upgrade the pacemaker software acted on the remote measurement circuit by the RF field, and a bootstrap program stored in bootstrap program zone of pacemaker flash memory.

Description

technical field [0001] The invention relates to a program control system of an active implantable medical device, in particular to a program control system for rewriting or updating the internal firmware of an implantable cardiac pacemaker. Background technique [0002] Various active implant devices, such as implantable cardiac pacemakers, implantable cardiac defibrillators, implantable nerve stimulators and implantable drug delivery systems, have been widely used clinically, and their functions and classifications are becoming more and more more and more complicated. Taking pacemakers as an example, from the most basic single-chamber ventricular demand pacemaker (VVI) to the most complex intelligent dual-chamber frequency-responsive pacemaker (DDDR), there are many corresponding to different pacing modes and additional diagnostics The type of function to choose from. [0003] The choice of pacemaker type and the setting of pacing parameters are generally determined by do...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of software upgradeable pacemaker is that its internal firmware must contain all upgradeable functions, which occupies a large storage space, and the stronger the versatility of the software, the more complex its structure, thus increasing the development cost of the software and affect software reliability

The main problem with this solution is that erasing and rewriting the flash memory requires a higher voltage and a larger current. Although the battery in the pacemaker can provide the voltage and current required for rewriting when it is relatively new, it can be rewritten once. The program memory will consume a large amount of battery power and significantly shorten the life of the pacemaker; when the battery in the pacemaker is old, it cannot bear this load

This is the main reason why the current software upgradeable pacemakers only rewrite local program vectors and control data during the so-called software upgrade, but cannot rewrite the overall software storage space.

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