SELF FLUSHING LUER ACTIVATED BLOOD SAMPLING DEVICES
First Claim
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1. A patient fluid sampling device connected to a flushing fluid supply and a patient fluid supply, said patient fluid sampling device comprising:
- a monitoring channel configured to contain the flushing fluid or the patient fluid;
a sampling port for providing access to samples of the patient fluid;
an auxiliary channel having a first end and a second end, at least the first end connected in fluid communication with the monitoring channel; and
a passageway having a first end, a second end and a passage extending between the first and second ends, said passageway having a sampling position wherein the passage connects the sampling port to the monitoring channel in fluid communication, and said passageway having a flushing position wherein the first end of the passageway aligns with the second end of the auxiliary channel and the second end of the passageway connects in fluid communication with auxiliary channel so that the passageway and the auxiliary channel form a loop to enable direct flow of the flushing fluid through the entire passage.
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Abstract
A blood sampling device for allowing a fluid pressure measurement and a fluid sample to be taken from a patient, having an inlet port configured to receive blood from the patient, an outlet port configured to be coupled to a monitoring channel having an infusion fluid, a sampling port configured for extraction of blood from the patient, a sampling channel configured to self-flush, after extraction, the blood with the infusion fluid, and an auxiliary channel for self-flushing the sampling channel.
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Citations
21 Claims
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1. A patient fluid sampling device connected to a flushing fluid supply and a patient fluid supply, said patient fluid sampling device comprising:
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a monitoring channel configured to contain the flushing fluid or the patient fluid;
a sampling port for providing access to samples of the patient fluid;
an auxiliary channel having a first end and a second end, at least the first end connected in fluid communication with the monitoring channel; and
a passageway having a first end, a second end and a passage extending between the first and second ends, said passageway having a sampling position wherein the passage connects the sampling port to the monitoring channel in fluid communication, and said passageway having a flushing position wherein the first end of the passageway aligns with the second end of the auxiliary channel and the second end of the passageway connects in fluid communication with auxiliary channel so that the passageway and the auxiliary channel form a loop to enable direct flow of the flushing fluid through the entire passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of flushing a fluid sampling device, the method comprising:
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positioning a passageway to connect a sampling port to a monitoring channel in fluid communication;
flowing patient fluid through the monitoring channel and the passageway to the sampling port for sampling;
forming a flushing loop out of the passageway and an auxiliary channel, said auxiliary channel having a first end connected in fluid communication with the monitoring channel, by aligning a first end of the passageway with a second end of the auxiliary channel and connecting a second end of the passageway in fluid communication with the monitoring channel; and
flowing the flushing fluid through the flushing loop to cleanse the patient fluid from the passageway, wherein the flushing loop is formed without physically interjecting the passageway and the auxiliary channel into the monitoring channel. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification