Device and process for controlling a respirator

• US 6,260,550 B1
• Filed: 09/20/1999
• Issued: 07/17/2001
• Est. Priority Date: 11/04/1998
• Status: Expired due to Fees

• Current Assignee: Drager Medizintechnik GmbH
• Original Assignee: Drager Medizintechnik GmbH
• Inventors: Weismann, Dieter, Rehfeldt, Michael
• Primary Examiner(s): Lewis, Aaron J.
• Application Number:
  US09/399,721
• Time in Patent Office: 666 Days
• Field of Search: 128/914, 128/205.19, 128/203.25, 128/204.24, 128/204.25, 128/204.26, 128/205.24
• US Class Current: 128/205.24
• CPC Class Codes: A61M 16/0045 Means for re-breathing exhaled gases, e.g. for hyperventilation treatment

Abstract

A respirator with an inhalation line (5) connected to a gas supply device (2) and with an exhalation line (7) connected to an exhalation device (3), with a Y piece (8) connecting the inhalation line (5) to the exhalation line (7), and with a patient connection (9) going out from the Y piece (8). Partial rebreathing of CO₂-containing exhaled air is made possible in a simple manner by providing a switchover device (4) between the inhalation line (5) and the gas supply device (2) as well as between the exhalation line (7) and the exhalation device (3). The switchover device is designed such that the flow connection is established between the inhalation line (5) and the gas supply device (2) as well as the exhalation line (7) and the exhalation device (3) in a first switching position and there is at least a flow connection between the gas supply device (2) and the exhalation line (7) in the second switching position.

Claims

1. A respirator, comprising:

a gas supply device;

an inhalation line connected to said gas supply device;

an exhalation device;

an exhalation line connected to said exhalation device;

a Y piece connecting said inhalation line to said exhalation line;

a patient connection going out from said Y piece;

a switchover device having a flow connection between said inhalation line and said gas supply device as well as a flow connection between said exhalation line and said exhalation device in a first switching position, and having at least a flow connection between said gas supply device and said exhalation line in a second switching position, said switchover device being positioned between said inhalation line and said gas supply device as well as being positioned between said exhalation line and said exhalation device, wherein a gas flow through said inhalation line is interrupted in second switching position.

2. The respirator in accordance with claim 1, wherein said switchover device is operated such that the second switching position is present at least during a time interval of an inhalation period.

3. A process for controlling a respirator, the process comprising the steps of:

providing a switchover device between a gas supply device and an inhalation line as well as between an exhalation line and an exhalation device;

operating the switchover device in a first mode of operation such that there is a flow connection between the inhalation line and the gas supply device as well as a flow connection between the exhalation line and the exhalation device; and

operating the switchover device in a second mode of operation such that the exhalation line is connected to the gas supply device while the gas flow in the inhalation line is interrupted in the second mode of operation.

4. The process in accordance with claim 3, wherein said second mode of operation is switched on during a predetermined period of the inhalation phase.

5. A respirator, comprising:

a Y piece with a first branch, with a second branch and with a third branch;

a patient connection connected directly to said first branch of said Y piece, said patient connection carrying gas from the Y piece to the patient and from the patient to the Y piece;

a gas supply device;

an inhalation line connected to said gas supply device and connected directly to said second branch of said Y piece, said inhalation line carrying gas in the direction of said Y piece from said gas supply device;

an exhalation valve;

an exhalation line connected to said exhalation valve and connected directly to said third branch of said Y piece; and

a switchover device provided between said inhalation line and said gas supply device as well as between said exhalation line and said exhalation valve, said switchover device being switchable into a first switching position providing a flow connection between said inhalation line and said gas supply device and providing a flow connection between said exhalation line and said exhalation valve, and said switchover device being switchable into a second position providing a flow connection between said gas supply device and said exhalation line wherein gas flow through said inhalation line is interrupted and gas flows through said exhalation line in the direction of said Y piece from said gas supply device.

6. The respirator in accordance with claim 5, wherein said switchover device is operated such that the second switching position is present at least during a time interval of an inhalation period.