Abstract: A combination suction regulator for medical use which comprises a cover, a vacuum gauge, a regulating module, an integrated flow channel module having a plurality of board surface flow channels, an intermittent timer module, a mode select switch, a vacuum relief and an air buffer. The air buffer is disposed inside the cover and integrally formed as a whole with the integrated flow channel module. A flow channel board and a bottom board coupled with each other to form the integrated flow channel module. The intermittent timer module comprises a diaphragm piston disposed on one side and the change valve disposed on another side of the middle part of the front side of the flow channel board.

Abstract: A dual gas source changeover valve comprises a valve body having a first inlet port, a second inlet port and an outlet port which are all in fluid communication with each other, a spool having a structure relative to an axial passage of the cavity of the valve body and which is slidably disposed therein, a first transition cavity formed by the cavity of the valve body and the spool between the first inlet port and the outlet port, a second transition cavity disposed opposite to the first transition cavity and formed between the second inlet port and the outlet port. By introducing delivered gas to the first transition cavity or the second transition cavity through connection channels, the present invention selectively connects or disconnects the first inlet port, the first transition cavity and the outlet port or the second inlet port, the second transition cavity and the outlet port.

Abstract: A timing device for an intermittent vacuum regulator comprises a diaphragm assembly that includes a diaphragm housing, a return spring, and a diaphragm projecting at least partially out of the diaphragm housing. A piston rod is coupled to the diaphragm. A connecting rod comprising an upper free end coupled to the piston rod and a lower fixed end coupled to a valve pin is provided. A piston stop comprising a semicircular C-shaped portion on its front side and a semi-cylindrical portion on its back side is also provided, wherein the piston rod directly pushes and pulls the connecting rod, such that during an intermittent operation of the timing device to actuate a valve assembly, the upper free end of the connecting rod rotates about the valve pin but is being limited in a range of motion by the piston stop.

Abstract: A dual gas source changeover valve comprises a valve body having a first inlet port, a second inlet port and an outlet port which are all in fluid communication with each other, a spool having a structure relative to an axial passage of the cavity of the valve body and which is slidably disposed therein, a first transition cavity formed by the cavity of the valve body and the spool between the first inlet port and the outlet port, a second transition cavity disposed opposite to the first transition cavity and formed between the second inlet port and the outlet port. By introducing delivered gas to the first transition cavity or the second transition cavity through connection channels, the present invention selectively connects or disconnects the first inlet port, the first transition cavity and the outlet port or the second inlet port, the second transition cavity and the outlet port.

Abstract: A combo suction regulator for medical use which comprises a cover (casing), a vacuum gauge, a regulating module, a integrated flow channel module, an intermittent timer regulating means, a mode select switch, a vacuum relief and air buffer, wherein a flow channel board and a bottom board coupled with each other to form the integrated flow channel module; the air buffer are disposed inside the casing on the board surface of the flow channel board which forms part of the integrated flow channel module, and tow holes disposed at a bottom part thereof for communicating corresponding flow channels of the integrated flow channel module; a sleeve seat is disposed at the center for installing vacuum gauge.