Arrangement in connection with a patient circuit and an absorber means

• US 7,148,806 B2
• Filed: 03/25/2004
• Issued: 12/12/2006
• Est. Priority Date: 03/25/2004
• Status: Active Grant

• Current Assignee: SunMed Group Holdings LLC
• Original Assignee: GE Healthcare Finland OY (General Electric Company)
• Inventors: Niklander, Tapani, Holopainen, Timo, Anttila, Mika, Laurila, Santtu
• Primary Examiner(s): Wu, Daniel
• Assistant Examiner(s): BLOUNT, ERIC
• Application Number:
  US10/809,041
• Publication Number:
  US 20050211761A1
• Time in Patent Office: 992 Days
• Field of Search: 340/573.1
• US Class Current: 340/573.1
• CPC Class Codes: A61M 16/01 specially adapted for anaesthetising A61M16/104, A61M16/18 take precedence
• CPC Class Codes: A61M 16/22 Carbon dioxide-absorbing devices ; Other means for removing carbon dioxidecartridges with absorbing substances for respiratory apparatus A62B19/00
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2205/6018 providing set-up signals for the apparatus configuration
• CPC Class Codes: A61M 2205/6054 Magnetic identification systems

Abstract

Arrangement in connection with a patient circuit and an absorber means. The arrangement comprises an information transfer means and an electronic means and a transponder electronically programmed with desired information. The transponder is attached to the absorber means. The information transfer means is arranged to communicate with the transponder, and the electronic means is arranged to carry out desired procedures from the basis of the information obtained from the anaesthesia/ventilation system and via the information transfer means from the transponder attached to the absorber means.

Claims

1. An arrangement for use with an anesthesia/ventilation system for a patient, the system including a breathing circuit for supplying breathing gases to the patient for respiration, said breathing circuit having means for flowing inspiratory gas to the patient and means for flowing expiratory gases from the patient through a CO₂ absorber means back to the inspiratory gas flow means, the arrangement comprising:

a transponder attached to the absorber means and electronically programmed with desired information including information relating to a CO₂ absorption characteristic of the absorber means;

an electronic information transfer means arranged to communicate with said transponder; and

electronic computation means, said electronic computation means being couplable to the anesthesia/ventilation system for receiving information relating to the amount of CO₂ introduced in the breathing circuit in the course of respiration by the patient, said electronic computation means receiving information from said transponder, via said electronic information transfer means, relating to a CO₂ absorption characteristic of the absorber means and performing a calculation to make a determination relating to the absorption of CO₂ by the absorber means.

2. The arrangement of claim 1, wherein said electronic computation means makes an identification of the absorber means.

3. The arrangement of claim 1, wherein the electronic information transfer means comprises an antenna means, and that the antenna means is arranged to read the information programmed in the transponder.

4. The arrangement of claim 3, wherein the antenna means is arranged to feed information calculated in the electronic computation means to the transponder.

5. The arrangement of claim 1, wherein the electronic information transfer means comprises a wire connection between the electronic information transfer means and the transponder.

6. The arrangement of claim 5, wherein the wire connection is arranged to feed information determined in the electronic computation means to the transponder.

7. The arrangement of claim 3, wherein the antenna means is a RFID antenna and the transponder is an RFID tag.

8. The arrangement of claim 4, wherein the antenna means is a RFID antenna and the transponder is an RFID tag.

9. The apparatus of claim 1 wherein said electronic computation means is further defined as using information received from the transponder relating to the CO₂ absorption capacity of the absorber means and information received from the anesthesia/ventilation system to make a determination of a current absorption capacity of the absorber means.

10. The arrangement of claim 9 wherein said electronic computation means makes a determination of one of the capacity of the absorber consumed or the capacity of the absorber remaining.

11. The arrangement of claim 9 wherein said electronic computation means makes a determination of the current absorption capacity of said absorber means as a percentage absorption capacity remaining or a percentage absorption capacity used up.

12. The arrangement of claim 1 wherein said electronic computation means uses information received from said transponder relating to the CO₂ capacity of the absorber means and information received from the anesthesia/ventilation system to determine the rate at which CO₂ is being absorbed by said absorption means, and determines the time remaining until the absorber means reaches its capacity for absorption.

13. The arrangement of claim 1 wherein said electronic computation means is further defined as using information received from the anesthesia/ventilation system comprising one or more of VCO₂ (rate of CO₂ production), fresh gas flow, minute volume, tidal volume, FiCO₂ (fractional inspired CO₂), and respiration rate.

14. The arrangement of claim 9 wherein said electronic computation means is further defined as using information received from the anesthesia/ventilation system comprising one or more of VCO₂ (rate of CO₂ production), fresh gas flow, minute volume, tidal volume, FiCO₂ (fractional inspired CO₂), and respiration rate.

15. The arrangement of claim 12 wherein said electronic computation means is further defined as using information received from the anesthesia/ventilation system comprising one or more of VCO₂ (rate of CO₂ production), fresh gas flow, minute volume, tidal volume, FiCO₂ (fractional inspired CO₂), and respiration rate.

16. The arrangement of claim 1 wherein said electronic computation means makes a determination of the periods of use of the absorber means.

17. The arrangement of claim 16 wherein said electronic computation means makes a determination of periods of exposure of the absorber means to dry flushing gases.