Device for dispensing oxygen for an anesthesia device

Patent metadata

Field	Value
Publication number	US-9283347-B2
Application number	US-201213530785-A
Country	US
Kind code	B2
Filing date	Jun 22, 2012
Priority date	Jun 25, 2011
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

A device ( 10 ) for dispensing oxygen for an anesthesia device includes a switching element ( 15 ) that diverts oxygen between a first gas path ( 153 ) and a second gas path ( 154 ). The first gas path ( 153 ) leads to a patient ( 27 ) via a connection and port element. The second gas path ( 154 ) leads to a gas tapping port ( 20 ) for oxygen or gas insufflation.

First claim

What is claimed is:

1. A dispensing device for dispensing fresh gas, oxygen and anesthetic in an anesthesia device for connection to a patient, the dispensing device comprising:
an anesthetic evaporator with an inlet and an outlet;
a device oxygen gas port;
a mixer with an oxygen port, which is connected to said device oxygen gas port via a fluidic path branch, with a nitrous oxide port and with an air port, wherein nitrous oxide, oxygen and air are mixed in said mixer and wherein mixed gas can reach the inlet of the anesthetic evaporator;
an oxygen-dispensing and display element, which is connected to said device oxygen gas port via another fluidic path branch and which has an adjusting element for adjusting a rate of flow and which displays the rate of flow;
a switching element, wherein said switching element is arranged downstream of said oxygen-dispensing and display element;
a gas tapping port provided for connecting a tube or tube and mask combination for oxygen insufflation;
a connection and port element for the patient;
a first gas path; and
a second gas path, wherein said first gas path is arranged downstream of said switching element, said second gas path is arranged downstream of said switching element, said first gas path leads to the inlet of the anesthetic evaporator and from said anesthetic evaporator to said connection and port element for the patient, said second gas path leads to said gas tapping port, said switching element sending oxygen, which is sent from the oxygen-dispensing and display element arranged upstream of said switching element to said switching element, into said first gas path or into said second gas path, and oxygen reaches said connection and port element while flowing through said first gas path after flowing through said anesthetic evaporator and oxygen is available at said gas tapping port during flow through said second gas path, wherein:
said switching element sends oxygen without overlap either into said first gas path or into said second gas path; and
there is no state of the switching element in which oxygen simultaneously enters said first gas path and said second gas path.

2. A dispensing device in accordance with claim 1 , wherein said switching element comprises a mechanical switching element.

3. A dispensing device in accordance with claim 2 , wherein said switching element comprises a manually actuated mechanical switching element.

4. A dispensing device in accordance with claim 1 , wherein said switching element comprises one of an electrical switching element, an electromagnetic switching element, an electromechanical switching element, a pneumatic switching element and an electropneumatic switching element.

5. A dispensing device in accordance with claim 1 , further comprising detection means for at least one of:
detecting a position of said switching element;
detecting a state of said switching element; and
detecting a switching position of said switching element.

6. A dispensing device in accordance with claim 5 , further comprising:
a control unit; and
a display unit, wherein:
said detection means is operatively connected to said control unit; and
at least one of the position, the state and the switching position of said switching element are sent to said control unit for processing and/or are displayed on a display unit.

7. A dispensing device in accordance claim 1 , further comprising a shut-off element for deactivating said mixer.

8. A dispensing device in accordance with claim 7 , further comprising an energy supply, wherein:
said switching element has a preferred position directing flow towards said first gas path; and
said preferred position is brought about in a case of failure of said energy supply or by said shut-off element.

9. A dispensing device in accordance with claim 1 , further comprising:
an inspiratory respiration tube; and
an expiratory respiration tube, wherein the dispensing device is connected to the patient via said connection and port element and via said inspiratory respiration tube and via said expiratory respiration tube.

10. A fresh gas, oxygen and anesthetic dispensing device for an anesthesia device, the dispenser dispensing device comprising:
an anesthetic evaporator with an inlet and an outlet;
a dispenser oxygen inlet port;
a mixer with an oxygen inlet port operatively connected to said dispenser oxygen inlet port via a fluidic path branch, a nitrous oxide inlet port and an air inlet port, wherein nitrous oxide, oxygen and air are mixed in said mixer and the mixed gas is fed from the mixer to the inlet of the anesthetic evaporator;
an oxygen-dispensing element connected to said dispenser oxygen inlet port via another fluidic path branch and having an adjusting element for adjusting a rate of flow and which displays the rate of flow;
a switching element arranged downstream of said oxygen-dispensing element;
a gas tapping port provided for connecting a tube or tube and mask combination for oxygen insufflation;
a connection and port element for the patient;
a first gas path; and
a second gas path, said first gas path leading to the inlet of the anesthetic evaporator and said first gas path leading from said anesthetic evaporator to said connection and port element for the patient, said second gas path leading to said gas tapping port, said switching element sending oxygen, which is sent from the oxygen-dispensing element arranged upstream of said switching element to said switching element, either exclusively into said first gas path or exclusively into said second gas path, and oxygen reaches said connection and port element while flowing through said first gas path after flowing through said anesthetic evaporator and oxygen is available at said gas tapping port during flow through said second gas path, wherein said switching element does not send oxygen simultaneously into said first gas path and into said second gas path.

11. A dispensing device in accordance with claim 10 , wherein said switching element comprises a mechanical switching element.

12. A dispensing device in accordance with claim 11 , wherein said switching element comprises a manually actuated mechanical switching element.

13. A dispensing device in accordance with claim 10 , wherein said switching element comprises one of an electrical switching element, an electromagnetic switching element, an electromechanical switching element, a pneumatic switching element and an electropneumatic switching element.

14. A dispensing device in accordance with claim 10 , further comprising a position detector for at least one of:
detecting a position of said switching element;
detecting a state of said switching element; and
detecting a switching position of said switching element.

15. A dispensing device in accordance with claim 14 , further comprising:
a control unit; and
a display unit, wherein:
said position detector is operatively connected to said control unit; and
at least one of the position, the state, and the switching position of said switching element are sent to said control unit for processing and/or are displayed on a display unit.

16. A dispensing device in accordance claim 10 , further comprising a shut-off element for deactivating said mixer.

17. A dispensing device in accordance with claim 16 , further comprising an energy supply, wherein:
said switching element has a preferred position directing flow towards said first gas path; and
said preferred position is brought about in a case of failure of said energy supply or by said shut-off element.

Assignees

• Heesch Ralf
• Draegerwerk Ag & Co Kgaa

Inventors

• Heesch Ralf

Classifications

• A61M16/104 Primary

  specially adapted for anaesthetics (A61M16/18 takes precedence) · CPC title

• A61M16/1015

  using a gas flush valve, e.g. oxygen flush valve · CPC title

• A61M16/18

  Vaporising devices for anaesthetic preparations · CPC title

• A61M2202/0283

  Nitrous oxide (N2O) · CPC title

• A61M2202/0208

  Oxygen · CPC title