초록 ▼

Disclosed is a dripping fluid level detector comprising a pair of electrodes oppositely disposed around a drip chamber of a supply passage of dripping medical fluid and a detecting circuit which detects the remaining amount of medical fluid according to changes in the electrostatic capacity caused b

Disclosed is a dripping fluid level detector comprising a pair of electrodes oppositely disposed around a drip chamber of a supply passage of dripping medical fluid and a detecting circuit which detects the remaining amount of medical fluid according to changes in the electrostatic capacity caused between said pair of electrodes.

대표청구항 ▼

A dripping fluid level detector for use with a fluid passage of a medical fluid dropper comprising: a drip chamber connected in said fluid passage; a pair of electrodes oppositely disposed about and in contact with the outer surfaces of said drip chamber for detecting changes in the electrostatic ca

A dripping fluid level detector for use with a fluid passage of a medical fluid dropper comprising: a drip chamber connected in said fluid passage; a pair of electrodes oppositely disposed about and in contact with the outer surfaces of said drip chamber for detecting changes in the electrostatic capacity between said electrodes caused by changes in the amount of dripping fluid remaining in said chamber, said electrodes being formed of an elastic substance and being deformable into conformity with the shape of said drip chamber; and, an electric circuit for detecting a change in electrostatic capacity existing between said electrodes, which represents a change in the amount of fluid remaining in said chamber, said circuit including an oscillation circuit having an oscillation state which varies in accordance with a change in said electrostatic capacity and means responsive to said oscillator circuit for providing a predetermined output signal when said oscillator state reaches a predetermined condition indicating the dropping of fluid in said chamber below a predetermined amount.