METHOD AND A BLOOD OXYGEN TESTER FOR DETECTING THE ARTERIAL OR VENOUS BLOOD

• US 20100241101A1
• Filed: 03/20/2009
• Published: 09/23/2010
• Est. Priority Date: 03/20/2009
• Status: Active Grant

• Current Assignee: Ali Ghobadi
• Original Assignee: Ali Ghobadi
• Inventors: Ghobadi, Ali
• Granted Patent: US 8,080,424 B2
• Time in Patent Office: Days
• US Class Current: 604/503
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/1468 using chemical or electrochemical methods, e.g. by polarographic means A61B5/1486 takes precedence
• CPC Class Codes: A61B 5/15003 for venous or arterial blood
• CPC Class Codes: A61B 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• CPC Class Codes: A61B 5/150786 Optical identification systems, e.g. bar codes, colour codes
• CPC Class Codes: A61B 5/1535 comprising means for indicating vein or arterial entry A61B5/1545 takes precedence
• CPC Class Codes: G01N 33/558 using diffusion or migration of antigen or antibody immunochromatographic test strips G01N33/54387

Abstract

A method and a blood oxygen tester for determining whether a blood sample is arterial or venous blood are disclosed. A blood oxygen tester for determining whether a blood sample is arterial or venous blood comprises a housing and a blood sample receptacle defined by the housing. A blood oxygen sensor is in communication with the blood sample receptacle and a test result indicator is in communication with the blood oxygen sensor. The indicator is responsive to the blood oxygen sensor for indicating whether a tested blood sample is arterial blood or venous blood.

Claims

1. A blood oxygen tester for determining whether a blood sample is arterial or venous, said blood oxygen tester comprising:

a housing;

a blood sample receptacle defined by said housing;

a blood oxygen sensor in communication with said blood sample receptacle; and

a test result indicator in communication with said blood oxygen sensor, said indicator responsive to said blood oxygen sensor for indicating whether a tested blood sample is arterial blood or venous blood.

2. The blood oxygen tester according to claim 1 wherein said housing has a volume of less than one hundred cubic centimeters.

3. The blood oxygen tester according to claim 1 wherein said housing has a volume of less than fifty cubic centimeters.

4. The blood oxygen tester according to claim 1 wherein said blood oxygen sensor comprises:

a reaction strip responsive to an oxygen saturation level in the blood sample.

5. The blood oxygen tester according to claim 4 wherein said reaction strip includes a reactive dye, said reactive dye being of a first color to indicate venous blood and of a second color to indicate arterial blood, and said test result indicator displays one of said first and said second colors.

6. The blood oxygen tester according to claim 5 wherein said reactive dye changes from said first color to said second color when a saturation of oxygen in the blood sample is greater than ninety percent.

7. The blood oxygen tester according to claim 5 wherein said reactive dye changes from said first color to said second color when a saturation of oxygen in the blood sample is greater than eighty percent.

8. The blood oxygen tester according to claim 1 wherein said blood oxygen sensor is reactive to the partial pressure of oxygen in the blood sample.

9. The blood oxygen tester according to claim 8 wherein said oxygen sensor is a reaction strip and includes a reactive dye, said reactive dye being of a first color to indicate venous blood and of a second color to indicate arterial blood, and said test result indicator displays one of said first and said second colors.

10. The blood oxygen tester according to claim 9 wherein said reactive dye changes from said first color to said second color when a partial pressure of oxygen in the blood sample is greater than seventy mmHg.

11. The blood oxygen tester according to claim 8 wherein said blood oxygen sensor includes a micro dissolved oxygen electrode reactive to a partial pressure of oxygen in the blood sample.

12. The blood oxygen tester according to claim 8 wherein said blood oxygen sensor is an electrochemical sensor reactive to a partial pressure of oxygen in the blood sample.

13. A blood oxygen tester for determining whether a blood sample is arterial or venous, said blood oxygen tester comprising:

a housing having a volume of less than fifty cubic centimeters;

a blood sample receptacle defined by said housing for receiving a blood sample;

a blood oxygen sensor in said housing comprising a reaction strip responsive to an oxygen saturation level in the blood sample; and

a test result indicator defined by said housing and in communication with said blood oxygen sensor, said indicator responsive to said blood oxygen sensor, said indicator displaying a first color when the tested blood sample is venous blood and indicating a second color when the tested blood sample is arterial blood.

14. The blood oxygen tester according to claim 13 wherein said reaction strip includes a reactive dye, said reactive dye being of said first color to indicate venous blood and of said second color to indicate arterial blood, and further wherein said test result indicator shows a portion of said reaction strip including said reactive dye indicating one of said first and said second colors.

15. The blood oxygen tester according to claim 14 wherein said reactive dye changes from said first color to said second color when a saturation of oxygen in the blood sample is greater than ninety percent.

16. The blood oxygen tester according to claim 14 wherein said reactive dye changes from said first color to said second color when a saturation of oxygen in the blood sample is greater than eighty percent.

17. The blood oxygen tester according to claim 14 wherein said reactive dye changes from said first color to said second color when a partial pressure of oxygen in the blood sample is greater than seventy mmHg.

18. A method for determining whether a patient'"'"'s blood sample is venous or arterial blood utilizing a blood oxygen tester, said method comprising:

preparing a site on the patient'"'"'s body to withdraw a blood sample;

inserting a needle through the site to withdraw the blood sample;

aspirating the blood sample;

depositing the blood sample in a receptacle of a blood oxygen tester, said blood oxygen tester includes a blood oxygen sensor comprising a reaction strip responsive to a certain characteristics of the blood; and

viewing the results of the blood sample to determine whether the blood withdrawn is arterial or venous blood.

19. The method according to claim 18 further comprising the step of completing a central line insertion procedure if the results indicate that the blood withdrawn is venous blood.

20. The method according to claim 18 wherein said reaction strip is responsive to an oxygen saturation level in the blood sample.

21. The method according to claim 20 wherein said reaction strip further includes a reactive dye, said reactive dye being of a first color to indicate venous blood and of a second color to indicate arterial blood.

22. The method according to claim 18 wherein said reaction strip is responsive to a partial pressure of oxygen (pO2) in the blood sample.

23. The method according to claim 22 wherein said reaction strip further includes a reactive dye, said reactive dye being of a first color to indicate venous blood and of a second color to indicate arterial blood.

24. The method according to claim 18 wherein said blood oxygen sensor is an electrochemical sensor reactive to a partial pressure of oxygen in the blood sample.

25. The method according to claim 18 wherein said blood oxygen sensor is an electrochemical sensor reactive to an oxygen saturation level in the blood sample.

26. A method of testing a patient'"'"'s blood sample to determine whether the blood is venous or arterial blood, said method comprising:

preparing a site for insertion of an introducer needle;

coupling an introducer needle with a syringe;

inserting the introducer needle through the site and into a vein;

aspirating a sample of blood into the syringe;

removing the syringe from the introducer needle;

depositing the blood sample in a blood sample receptacle of a blood oxygen tester;

allowing the blood sample to contact in the blood oxygen tester a blood oxygen sensor comprising a reaction strip responsive to an oxygen saturation level in the blood sample; and

viewing a test result indicator in communication with the blood oxygen sensor, the indicator being responsive to the blood oxygen sensor and indicating a first color when the tested blood sample is venous blood and indicating a second color when the tested blood sample is arterial blood.