# US 11,027,083 B2 · Pressure regulator for endotracheal tube cuff, breathing system comprising such a regulator and container comprising a variable volume chamber for such a regulator

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- Number: US 11,027,083 B2
- Document ID: US11027083B2
- Status: Granted
- Kind: B2
- Application number: 16/151,913
- Filed: 2018-10-04
- Published: 2019-04-11
- Granted: 2021-06-08
- Earliest claimed: 2017-10-09
- Assignees: Leved
- Applicants: Leved
- Inventors: Edouard Levêque
- Web page: https://patentgrep.com/patent/US11027083B2

## CPC

- A61M 16/044: {External cuff pressure control or supply, e.g. synchronisation with respiration}
- A61M 16/0003: {Accessories therefor, e.g. sensors, vibrators, negative pressure}
- A61M 2016/0027: {pressure meter}
- A61M 2205/273: preventing reuse, e.g. of disposables
- A61M 2205/276: preventing unwanted use
- A61M 2205/502: User interfaces, e.g. screens or keyboards
- A61M 2205/52: with memories providing a history of measured variating parameters of apparatus or patient
- A61M 2205/583: by visual feedback
- A61M 2205/584: having a color code
- 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

A pressure regulator includes a container defining a variable volume chamber having a least one first orifice to be connected to an auxiliary hose such that, in use, the variable volume chamber of the pressure regulator and a sealing cuff are in communication. The regulator includes a pressure means acting on the container for exerting a certain force by means of a weight that can move along an articulated rod for adjusting the air pressure contained in the variable volume chamber. A system for locking the weight is provided for preventing unexpected movement of the weight. The invention is applicable to endotracheal tubes, tracheotomy tube or similar instruments for the ventilation of a patient.

## Claims

### Claim 1

A system comprising:
a pressure regulator for an endotracheal tube,
a tube comprising:
a main pipe having a first end configured to be inserted into a trachea of a patient and a second end configured to be connected to a respirator apparatus;
an inflatable annular sealing cuff that surrounds the first end of the main pipe;
at least one auxiliary hose having a first end connected to the sealing cuff and a second end provided with a valve that can be connected to a compressed air source for inflating the sealing cuff,
a container defining a variable volume chamber having at least one first orifice to be connected to the auxiliary hose such that, in use, the variable volume chamber of the pressure regulator and the sealing cuff are in fluid communication;
a weight being movable along an articulated rod for adjusting the air pressure contained in the variable volume chamber, and consequently the air pressure contained in the sealing cuff;
a locking system for locking the weight to prevent unexpected movement of the weight.

### Claim 2 (depends on 1)

The system according to claim 1 wherein, the variable volume chamber is formed from flexible plastic material and slides along an upper edge of a hub of the container resting on a base of the regulator.

### Claim 3 (depends on 2)

The system according to claim 2 further comprising a ring that holds the variable volume chamber tightly against the hub.

### Claim 4 (depends on 3)

The system according to claim 3 further comprising beads placed on peripheries of the hub and of the ring to wedge a lower edge of the chamber.

### Claim 5 (depends on 1)

The system according to claim 1 wherein the locking system includes a screwable element provided with a friction head to be placed in blocking contact on one part of the rod by a rotational motion.

### Claim 6 (depends on 1)

The system according to claim 1 further comprising a movement detector attached to the rod to provide a pressure indication to a management device for displaying on a screen the pressure indication and a history of various preceding operations.

### Claim 7 (depends on 1)

The system according to claim 1 wherein the at least one auxiliary hose comprises an indicator to prevent connection errors.

### Claim 8 (depends on 1)

The system according to claim 1 wherein connections of the at least one auxiliary hose are glued.

### Claim 9 (depends on 1)

The system according to claim 1 further comprising a management device that engages with a screen for displaying at least one pressure indication and that includes memory devices to contain the history of use.

### Claim 10 (depends on 1)

A breathing system comprising the system according to claim 1 and a respirator apparatus.