US 5,337,780 AGranted

Suction control valve

AssigneeSherwood Medical Company

InventorKok-Hiong Kee

Life of this patent

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Abstract

A suction control valve is disclosed which includes a primary suction device access and an ancillary suction device access. The valve includes an actuator which is linearly movable between a first position in which the primary access is closed against suction pressure therethrough, to a second position in which the primary access is open to suction pressure therethrough. The valve also includes a rotatable valve core which can be rotated by the actuator to a third position to disable its linear movement and to open the ancillary access port. When the actuator is in the first position, atmospheric air can pass through the valve and into the suction pressure source in such a manner that a "hissing" auditory signal is generated, indicative of the presence of suction pressure within the valve. When the actuator is in the second or third positions, the "hissing" is prevented.

Claims4

Dependent claims

A suction control valve comprising:

a valve body having a suction source access port, a primary suction device access port, and a fluid flow passage for allowing fluid flow passage between said suction source access port and said primary suction device access port,
an ancillary suction device access port in fluid flow connection with said fluid flow passage, and
an actuator positioned at least partially within said valve body for movement relative thereto between at least a first position in which said primary suction device access port and said ancillary suction device access port are closed against fluid flow therethrough, a second position in which said primary suction device access port is open to fluid flow therethrough and said ancillary suction device access port is closed to fluid flow therethrough, and a third position in which said primary suction device access port is closed against fluid flow therethrough and said ancillary suction device access port is open to fluid flow therethrough.

Dependencies are inferred from the claim text.

Facts

Application: 07/962,757Filed 19 Oct 1992
Granted: 16 Aug 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

F16K 5/0207
With plugs having conical surfaces; Packings therefor: with special plug arrangement, e.g. special shape or built in means
A61M 1/774
Suction-irrigation systems: handpieces specially adapted for providing suction as well as irrigation, either simultaneously or independently
A61M 16/0463
Tracheal tubes: combined with suction tubes, catheters or the like; Outside connections
A61M 1/7413
With means for varying suction manually: by changing the cross-section of the line