The present invention discloses a device for preventing the disassembly of a disposable handpiece that is capable of preventing the reuse of a disposable medical handpiece. The device for preventing the disassembly of a disposable medical handpiece according to the present invention includes a sensing section in which respective disassembly sensors having resistant coatings maintaining a set resistance value are provided in disassembly sensor installation space sections formed in the assembly of the handpiece to be in close contact with each other during assembly so that parallel electric connection between the resistant coatings is performed； an AD converter that converts a voltage change corresponding to the detected resistance of the sensing section into a digital signal； a control unit that registers the resistance value of the parallel-connected resistant coatings during initial power supply and generates a destruction signal in a case where the resistance value measured in the AD converter is not present within a set range； a high voltage generating unit that supplies a destruction voltage to a driving coil of a driving motor of the handpiece in response to the destruction signal of the control unit； and a built-in battery that maintains a charging voltage and supplies power for destruction voltage generation to the high voltage generating unit. According to the present invention, the use or non-use of the disposable medical handpiece can be recognized and the power supply is blocked during the disassembly for reuse or component use so that illegal handpiece reuse can be prevented.본 발명에서 일회용 의료 핸드피스의 재사용을 방지할 수 있는 일회용 핸드피스의 분해 방지 장치를 개시한다.본 발명에 따른 장치는, 일회용 의료 핸드피스의 분해 방지를 위한 장치에 있어서, 설정된 저항값을 유지하는 저항피막이 형성된 분해센서가 상기 핸드피스의 조립체에 형성된 분해센서 설치공간부에 각각 마련되며, 조립 과정에서 상호 밀착되어 전기적으로 저항피막 간 병렬접속이 이루어지는 센싱부； 상기 센싱부의 검출 저항에 대응하는 전압변화를 디지털 신호로 변환하는 AD 컨버터； 최초 전원 공급 시 상기 병렬접속된 저항피막의 저항값을 등록하고, 상기 AD 컨버터에서 측정된 저항값이 설정범위 내에 존재하지 않을 경우 파괴신호를 생성하는 제어부； 상기 제어부의 파괴신호에 응답하여 핸드피스
