# US 12,109,350 B1 · Nasal catheter to prevent negative pressure

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,109,350 B1
- Document ID: US12109350B1
- Status: Granted
- Kind: B1
- Application number: 18/525,883
- Filed: 2023-12-01
- Granted: 2024-10-08
- Earliest claimed: 2023-06-19
- Applicants: Young Jin Baek
- Inventors: Young Jin Baek
- Web page: https://patentgrep.com/patent/US12109350B1

## CPC

- A61M 1/74: {Suction control (underwater drainage A61M1/61)}
- A61M 1/85: {with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants (for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208)}
- A61M 1/7411: {by changing the size of a vent (in combination with changing the cross-section of the line A61M1/7413)}
- A61M 1/87: {Details of the aspiration tip, not otherwise provided for}
- A61M 25/0068: {Static characteristics of the catheter tip, e.g. shape, atraumatic tip, curved tip or tip structure}
- A61M 25/0071: {Multiple separate lumens (multiple separate lumens throughout the catheter A61M25/0026)}
- A61M 25/0074: {Dynamic characteristics of the catheter tip, e.g. openable, closable, expandable or deformable}
- A61M 2210/0618: Nose
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

The present invention relates to a nasal catheter to prevent a negative pressure, and more particularly, to a nasal catheter that prevents a negative pressure which includes a tube body which is connected to one end of a shaft of an aspirator that suctions rhinorrhea or secretions, and is made up of a cone part whose diameter increases from a distal end toward a rear end of the conduit and an extension part that forms a passage extending from the cone part, and is inserted into the nasal cavity; and a ventilation part in which a ventilation hole penetrating from the distal end of the cone part toward the rear end is formed to allow outside air to flow into the nasal cavity.

## Claims

### Claim 1

A nasal catheter to prevent a negative pressure, comprising:
a tube body formed as a conduit connected to one end of a shaft provided in an aspirator that is configured to suction rhinorrhea or secretions and take the rhinorrhea or secretions out of a body, comprising:
a cone part having a diameter which increases from a distal end of the conduit toward a rear end of the conduit; and
an extension part which is connected to the cone part having a passage extending longitudinally within the extension part and is configured to be inserted into a nasal cavity; and
a ventilation part comprising:
an inflow tube formed with an empty interior, the inflow tube penetrating an interior of a cross-section of the cone part and the extension part from a distal end of the cone part toward one side of the extension part; and
an inflow hole which is bent at the one side of the extension part communicating from one end of the inflow tube to an outer surface of the extension part to allow an external air to flow into the nasal cavity, wherein the cone part and the extension part fully cover the ventilation part except both open ends of the ventilation part,
wherein the ventilation part increases a suction force that causes the rhinorrhea or secretions in the nasal cavity to flow into an inside of the tube body upon when one end of the inflow hole located at the distal end of the cone part is closed.

### Claim 2 (depends on 1)

The nasal catheter to prevent a negative pressure according to claim 1, further comprising: an inclined part which reduces pressure of air suctioned into the distal end of the cone part by forming an inclination inside the distal end of the cone part.

### Claim 3 (depends on 1)

The nasal catheter to prevent a negative pressure according to claim 1, further comprising: an opening communicating with the ventilation part formed on the outer surface of the cone part.