Air extraction device and nasal aspirator
AssigneeZhongshan Xingfu Industry and Trade Co., Ltd.
InventorQiang ZHANG
Life of this patent
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Abstract
An air extraction device and a nasal aspirator. The air extraction device includes a cylinder body and a variable-volume body. The cylinder body defines a cavity and a first air hole, and the first air hole is in communication with the cavity. The variable-volume body is arranged within the cavity. The variable-volume body is configured such that, through a change in a volume of the variable-volume body within the cavity from large to small, an air pressure within the cavity is reduced, for providing a suction force externally through the first air hole.
Claims20
An air extraction device, comprising:
- a cylinder body;
- wherein the cylinder body defines a cavity and a first air hole, and the first air hole is in communication with the cavity;
- and
- a variable-volume body, arranged within the cavity;
- wherein the variable-volume body is configured such that, through a change in a volume of the variable-volume body within the cavity from large to small, an air pressure within the cavity is reduced, for providing a suction force externally through the first air hole.
A nasal aspirator, comprising:
- a liquid storage tank, an air guide pipe, and an air extraction device;
- wherein the air extraction device comprises:
- a cylinder body;
- wherein the cylinder body defines a cavity and a first air hole, and the first air hole is in communication with the cavity;
- and
- a variable-volume body, arranged within the cavity;
- wherein the variable-volume body is configured such that, through a change in a volume of the variable-volume body within the cavity from large to small, an air pressure within the cavity is reduced, for providing a suction force externally through the first air hole;
- wherein the liquid storage tank comprises a chamber;
- a first end of the liquid storage tank defines a liquid inlet hole, and the liquid inlet hole is in communication with the chamber;
- a side wall of the liquid storage tank defines a fourth air hole, and the fourth air hole is in communication with the chamber;
- a first end of the air guide pipe is in communication with the first air hole of the air extraction device, and a second end of the air guide pipe is in communication with the fourth air hole of the liquid storage tank.
Dependencies are inferred from the claim text.