[특허]Aspiration control system

Aspiration control system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-031/00
출원번호	US-0834450 (1992-02-12)
발명자 / 주소	Conley Paul G. (St. Charles MO) Williams Jr. Daniel L. (Florissant MO) Appelbaum Peter F. (St. Louis MO)
출원인 / 주소	American Cyanamid Company (Stamford CT 02)
인용정보	피인용 횟수 : 141 인용 특허 : 0

초록 ▼

An aspiration control system includes a motor and vacuum pump which are controlled by a system controller, in accordance with input commands to provide a precise, continuously variable vacuum or negative pressure within a vacuum chamber and surgical handpiece. The resulting vacuum is proportional to the control signal sent from the system controller to the motor. A transducer samples the vacuum output and produces a signal fed system controller. The signal is compared with a variable input signal set by a potentiometer or other signal source activated by the input commands so that the transducer signal tracks the voltage source signal. Therefore, the vacuum output of the vacuum pump and motor relates directly and predictably to the input commands. In one embodiment the motor is a brushless DC motor. The system may also include a pinch valve provided on a fluid aspiration conduit communicating between the surgical handpiece and vacuum chamber so that the fluid aspiration at the handpiece may be controlled independently from the negative pressure level created in the vacuum chamber.

대표청구항 ▼

A surgical aspiration system for aspirating fluid and cut tissue from an operative site through a surgical handpiece into a vacuum chamber, the system comprising: a vacuum pump for creating a negative pressure within the vacuum chamber, including conduit means adapted for connection with the vacuum chamber; a motor mechanically connectable to the vacuum pump for operating the vacuum pump; transducer means, adapted for placement in pressure communication with the vacuum chamber, for sensing the vacuum within the vacuum chamber and for generating a first signal in response thereto; input means for selecting an appropriate vacuum level for aspirating fluid and cut tissue and for generating a second signal which corresponds to the vacuum level; variable reference voltage source means for generating a selectively variable reference voltage; and controller means, connected to said transducer means, said input means, and said variable reference voltage source means, for comparing said first and second signals and the variable reference voltage and generating an output signal representing the difference as determined by the controller means between the first signal and the second signal as modified by the variable reference voltage, said output signal being connected to drive said motor and vacuum pump to control the vacuum level within said vacuum chamber.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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