Systems and methods for parenterally procuring bodily-fluid samples with reduced contamination
The present invention is directed to the parenteral procurement of bodily-fluid samples. The present invention is also directed to systems and methods for parenterally procuring bodily-fluid samples with reduced contamination from dermally-residing microbes. In some embodiments, a bodily-fluid withdrawing system is used to withdraw bodily fluid from a patient for incubation in culture media in one or more sample vessels. Prior to withdrawing bodily fluid into the one or more sample vessels for incubation, an initial volume of withdrawn bodily fluid is placed in one or more pre-sample reservoirs and is not used for the incubation in culture media.
1. A method of using a sample procurement device to obtain a blood sample with reduced contamination from a patient, the method comprising:
establishing fluid communication with the vasculature of the patient and a first fluid flow path;
receiving an initial volume of blood from the patient;
in response to receiving the initial volume of blood from the patient, automatically sequestering the initial volume of blood in a reservoir integrated into the sample procurement device;
establishing fluid communication between the patient and a sample vessel, the sample vessel containing a culture media; and
receiving a second volume of blood into the sample vessel,
whereby sequestering the initial volume of blood sequesters contaminants present in the initial volume of blood, thereby reducing contamination in the blood received into the sample vessel.
2. The method of claim 1 , wherein the sample procurement device has a first state operable to allow sequestration of contaminants present in the initial volume of blood, and a second state operable to allow the second volume of blood to flow to a second fluid flow path, the sample procurement device configured to transition from the first state to the second state as a result of sequestering the initial volume of blood.
3. The method of claim 1 , wherein the initial volume of blood sequestered in the reservoir is not used for culture testing.
4. The method of claim 1 , wherein establishing fluid communication with the vasculature of the patient includes inserting a needle having a lumen into the vasculature of the patient.
5. The method of claim 1 , wherein the initial volume of blood sequestered in the reservoir is less than 5 ml.
6. The method of claim 1 , wherein the sample procurement device has a first state operable to allow the initial volume of blood to flow to the reservoir, and a second state operable to allow the second volume of blood to flow toward the sample vessel as a result of the initial volume of blood filling the reservoir.
7. The method of claim 1 , wherein the initial volume of blood is fluidically isolated in the reservoir.
8. A method of using a sample procurement device to obtain a blood sample with reduced contamination from a patient, the method comprising:
establishing fluid communication between the vasculature of the patient and a first fluid flow path;
receiving an initial volume of blood from the patient into a reservoir integrated into the sample procurement device;
as a result of filling the reservoir, diverting flow away from the reservoir thereby sequestering the initial volume of blood in the reservoir;
establishing fluid communication between the patient and a sample vessel; and
receiving a second volume of blood into the sample vessel,
whereby sequestering the initial volume of blood sequesters contaminants present in the initial volume of blood, thereby reducing contamination in the blood received into the sample vessel.
9. The method of claim 8 , wherein the initial volume of blood is less than 5 ml.
10. The method of claim 9 , wherein establishing fluid communication with the vasculature of the patient includes inserting a needle having a lumen into the vasculature of the patient, the initial volume of blood is greater than a volume of the lumen of the needle and less than 5 ml.
11. The method of claim 10 , wherein the needle is a first needle, the sample procurement device configured to be fluidically coupled to a second needle, the second needle being removably insertable into the sample vessel.
12. The method of claim 8 , wherein the sample procurement device further includes a diverter having a first state operable to allow sequestration of contaminants present in the initial volume of blood, and a second state operable to allow blood to flow toward the sample vessel.
13. The method of claim 8 , wherein the sample procurement device automatically sequesters the initial volume of blood in the reservoir and diverts flow away from the reservoir as a result of filling the reservoir.
14. The method of claim 8 , wherein the initial volume of blood is fluidically isolated in the reservoir.
15. The method of claim 8 , wherein the sample vessel contains a culture media.
16. The method of claim 8 , wherein the sample vessel is a syringe.
17. A method of using a sample procurement device to obtain a blood sample with reduced contamination from a patient, the method comprising:
establishing fluid communication between the vasculature of the patient and a first fluid flow path;
receiving an initial volume of blood from the patient;
sequestering the initial volume of blood in a reservoir integrated into the sample procurement device;
after blood stops flowing from the patient and the initial volume of blood is sequestered in the reservoir, establishing fluid communication between the needle and a sample vessel, the sample vessel containing a culture media; and
receiving a second volume of blood into the sample vessel,
whereby sequestering the initial volume of blood sequesters contaminants present in the initial volume of blood, thereby reducing contamination in the blood received into the sample vessel.
18. The method of claim 17 , wherein the initial volume of blood is less than 5 ml.
19. The method of claim 17 , wherein the sample procurement device further includes a diverter having a first state operable to allow sequestration of contaminants present in the initial volume of blood, and a second state operable to allow blood to flow toward the sample vessel.
20. The method of claim 19 , wherein the diverter automatically transitions from the first state to the second state as a result of filling the reservoir.
21. The method of claim 17 , wherein the initial volume of blood is fluidically isolated in the reservoir.
22. The method of claim 17 , wherein the sample vessel contains a culture media.
23. The method of claim 17 , wherein the sample vessel is a syringe.
24. A method of using a sample procurement device to obtain a blood sample with reduced contamination from a patient, the method comprising:
establishing fluid communication between the vasculature of the patient and an inlet of the sample procurement device;
receiving an initial volume of blood from the patient into a reservoir integrated into the sample procurement device;
in response to filling the reservoir, sequestering the initial volume of blood in the reservoir;
establishing fluid communication between the patient and a sample vessel, the sample vessel containing a culture media; and
receiving a second volume of blood into the sample vessel.
25. The method of claim 24 , wherein the sample procurement device has a first state operable to allow the initial volume of blood to flow to the reservoir, and a second state operable to allow the second volume of blood to flow toward the sample vessel as a result of the initial volume of blood filling the reservoir.
26. The method of claim 24 , wherein the initial volume of blood sequestered in the reservoir is not used for culture testing.
27. The method of claim 24 , wherein establishing fluid communication with the vasculature of the patient includes inserting a needle having a lumen into the vasculature of the patient.
28. The method of claim 24 , wherein the initial volume of blood sequestered in the reservoir is less than 5 ml.
29. The method of claim 24 , whereby sequestering the initial volume of blood sequesters contaminants present in the initial volume of blood, thereby reducing contamination in the blood received into the sample vessel.
30. The method of claim 24 , wherein the initial volume of blood is fluidically isolated in the reservoir.