# US 2008/0184997 A1 · Anaesthetic apparatus with circulation of respiratory gases

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- Number: US 2008/0184997 A1
- Document ID: US20080184997A1
- Status: Published application
- Kind: A1
- Application number: 12/016,252
- Filed: 2008-01-18
- Published: 2008-08-07
- Earliest claimed: 2007-02-02
- Assignees: Ppw Kontex Krzysztof Kondratowicz
- Inventors: Krzysztof Kondratowicz
- Web page: https://patentgrep.com/patent/US20080184997A1

## CPC

- A61M 16/22: Carbon dioxide-absorbing devices {; Other means for removing carbon dioxide}(cartridges with absorbing substances for respiratory apparatus A62B19/00)
- A61M 16/01: specially adapted for anaesthetising {(A61M16/104, A61M16/18 take precedence)}
- A61M 16/08: Bellows; Connecting tubes {(having means for taking samples G01N1/22); Water traps; Patient circuits}
- A61M 16/14: by mixing different fluids, one of them being in a liquid phase
- A61M 16/209: {Relief valves}
- A61M 16/0066: {Blowers or centrifugal pumps}
- A61M 16/0078: {Breathing bags}
- A61M 16/04: Tracheal tubes (catheters in general A61M25/00)
- A61M 16/06: Respiratory or anaesthetic masks
- A61M 16/18: Vaporising devices for anaesthetic preparations
- A61M 2202/0208: Oxygen
- 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 through chamber, which functions as a circulation enforcing unit, is placed in the closed gas flow circuit. /3/. Inside the ventricle there is located a ventilator /4/. The aforementioned chamber /3/ is of cylinder shape and its axis is aligned with the axis of the ventilator's 4b rotor 4a connected with the shaft of an electric motor /4b/ with adjustable rotational speed. The through chamber /3/ has a connector /5/ joining it to the breathing bag /6/ and the anaesthetic substance evaporator /7/. The outlet of the connector /5/ is placed at the pressure side of the ventilator /4/, whereas the connecting element /8, 9/ is led out from a part of the closed circuit located between the absorber /2/ and the enforcing unit. The connecting element is an intubation tube /8/ or mask /9/ adjusted to the patient's face.

## Claims

### Claim 1

Anaesthetic apparatus with circulation of respiratory gases with a connecting element for a patient's respiratory system led out from a closed circuit, which includes a carbon dioxide absorber. The characteristic feature of the apparatus is the application of a unit which enforces gas circulation in the circuit.

### Claim 2 (depends on 1)

According to claim 1, the apparatus is characteristic by the fact that the unit enforcing gas circulation is a through chamber /2/ with a ventilator /4/ placed inside.

### Claim 3 (depends on 2)

According to claim 2, the apparatus is characteristic by the fact that the through chamber /2/ has a cylinder shape and its axis is in line with the axis of the ventilator's rotor /4a/. The ventilator is connected with the shaft of an electric motor /4b/ with adjustable rotational speed.

### Claim 4 (depends on 3)

According to claim 3, the apparatus is characteristic by the fact that the through chamber /2/ is equipped with a connector /5/ for the through chamber /6/ and the evaporator /7/ of anaesthetic substance.

### Claim 5 (depends on 3)

According to claim 3, the apparatus is characteristic by the fact that the outlet of the connector /5/ is located at the pressure side of the ventilator /4/.

### Claim 6 (depends on 1)

According to claim 1, the apparatus is characteristic by the fact that the connecting element is led out from a part of the closed circuit located between the absorber /2/ and the enforcing unit.

### Claim 7 (depends on 6)

According to claim 6, the apparatus is characteristic by the fact that the connecting element is an intubation tube /8/.

### Claim 8 (depends on 6)

According to claim 6, the apparatus is characteristic by the fact that the connecting element is a mask /9/ adjusted to the patient's face.