Systems and methods for parenterally procuring bodily-fluid samples with reduced contamination
First Claim
1. A device for procuring a blood sample with reduced contamination from a patient, the device comprising:
- a lumen-containing device configured for insertion into the patient; and
a junction configured to be in fluid communication with the lumen-containing device, the device configured to receive a first volume of blood from the patient while the device is in a first state, the device configured to transition without manual intervention to a second state as a direct result of sequestration of an initial portion of the first volume of blood such that the junction is configured to allow the establishment of fluid communication between the lumen-containing device and a sample vessel, the sample vessel containing culture media for facilitating growth of one or more types of microbes, the sample vessel configured to receive a second volume of blood when the device is in the second state,whereby sequestering the initial portion of the first volume of blood sequesters contaminants present in the first volume of blood, thereby reducing contamination that can lead to false positives in culture tests of the second volume of blood.
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Accused Products
Abstract
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 Prior to withdrawing bodily fluid into the one or more sample vessels for incubation, an initial volume of withdrawn bodily fluid is placed in one or more pre-sample reservoirs and is not used for the incubation in culture media.
155 Citations
36 Claims
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1. A device for procuring a blood sample with reduced contamination from a patient, the device comprising:
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a lumen-containing device configured for insertion into the patient; and a junction configured to be in fluid communication with the lumen-containing device, the device configured to receive a first volume of blood from the patient while the device is in a first state, the device configured to transition without manual intervention to a second state as a direct result of sequestration of an initial portion of the first volume of blood such that the junction is configured to allow the establishment of fluid communication between the lumen-containing device and a sample vessel, the sample vessel containing culture media for facilitating growth of one or more types of microbes, the sample vessel configured to receive a second volume of blood when the device is in the second state, whereby sequestering the initial portion of the first volume of blood sequesters contaminants present in the first volume of blood, thereby reducing contamination that can lead to false positives in culture tests of the second volume of blood. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for establishing a fluid flow path between a patient and a sample vessel, the device comprising:
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a lumen-containing device configured for insertion into the patient; tubing configured to be fluidically coupled to the lumen-containing device; and a diverter configured to transition from a first state to a second state without manual intervention as a direct result of receiving a first volume of blood from the patient, the diverter configured to sequester an initial portion of the first volume of blood and to allow fluid communication between the tubing and the sample vessel when in the second state such that the sample vessel can receive a second volume of blood, the sample vessel containing culture media for facilitating growth of one or more types of microbes, whereby sequestering the initial portion of blood sequesters contaminants present in the first volume of blood from the tubing, thereby reducing contamination that can lead to false positives in culture tests of the second volume of blood. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A device for establishing a fluid flow path between a patient and a sample vessel, the device comprising:
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a lumen-containing device configured for insertion into the patient; and a flow controller configured to be fluidically coupled to the lumen-containing device, the flow controller defining a first fluid flow path and a second fluid flow path, the first fluid flow path configured to receive a first volume of blood from the patient, the flow controller configured to (a) automatically sequester the first volume of blood in at least a portion of the first fluid flow path and (b) allow fluid communication to be established between the lumen-containing device and the sample vessel after blood stops flowing from the patient such that a second volume of blood can flow from the lumen-containing device, through the second fluid flow path, and toward the sample vessel, the sample vessel containing culture media for facilitating growth of one or more types of microbes, whereby sequestering the first volume of blood sequesters contaminants present in the first volume of blood from the second fluid flow path, thereby reducing contamination that can lead to false positives in culture tests of the second volume of blood. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A device for procuring a blood sample with reduced contamination from a patient, the device comprising:
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a lumen-containing device configured to establish fluid communication with the patient; and a junction configured to be placed in fluid communication with the lumen-containing device, the device configured to receive an initial flow of blood from the patient while in a first state, the device configured to transition to a second state without manual intervention as a direct result of sequestering an initial volume of blood and any contaminants present therein such that fluid communication is able to be established between the lumen-containing device and a sample vessel, the sample vessel containing culture media for facilitating growth of one or more types of microbes and configured to receive approximately 2 ml to 10 ml of sample blood. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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Specification