US 12,239,343 B1
Respiratory obstruction removal device
Ligui He, New York, NY (US); and David Luo, New York, NY (US)
Assigned to DCSTAR INC, New York, NY (US)
Filed by DCSTAR INC., New York, NY (US)
Filed on Nov. 15, 2023, as Appl. No. 18/509,912.
Int. Cl. A61B 17/50 (2006.01); A61M 1/00 (2006.01); A61M 16/06 (2006.01); A61M 16/20 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/50 (2013.01) [A61M 1/962 (2021.05); A61M 16/06 (2013.01); A61M 16/208 (2013.01); A61B 2017/00561 (2013.01); A61M 2210/1032 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A respiratory obstruction removal device, comprising:
a face mask and a negative pressure generating device that exerts negative pressure on the face mask,
wherein the negative pressure generating device includes:
a grip portion, which includes a portion for handheld use, a top, and a bottom with an opening;
an extendable tubular body, made of elastic material, having a variable-volume cavity with a hollow structure, one end of the extendable tubular body connected to the bottom of the grip portion;
an annular interface, situated at another end of the extendable tubular body away from the grip portion, and equipped with a face mask interface for connecting to the face mask;
wherein the face mask includes:
an upper part configured to fit with the annular interface,
a lower part fitted with a flexible annular cushion to conform to a face of a patient, and
a connecting body linking the upper part and the lower part;
the respiratory obstruction removal device further comprising:
a first one-way valve, situated within a channel that runs through the annular interface, connecting the extendable tubular body with the face mask, wherein an inlet end of the first one-way valve is in fluid communication with the face mask, while an outlet end of the first one-way valve is in fluid communication with an interior of the extendable tubular body, and the first one-way valve is configured to prevent a flow of air from the extendable tubular body into the face mask when the extendable tubular body is compressed, and to allow air from the face mask to flow into the extendable tubular body when the extendable tubular body expands; and
a second one-way valve, situated in the grip portion, wherein an outlet end is in communication with an external environment, while an inlet end is in communication with the extendable tubular body, and the second one-way valve allowing the air to flow from the extendable tubular body to the external environment when the extendable tubular body is compressed; and closes to prevent the air from exiting the extendable tubular body when the extendable tubular body expands, and blocks external air from entering, to maintain a negative pressure environment within the extendable tubular body.