Blood collection set with venting mechanism
First Claim
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1. A blood collection set comprising;
- a first needle assembly having a first hub and a first cannula mounted to said first hub, said first cannula having a lumen extending therethrough, a length of flexible tubing having opposite first and second ends and a passage extending between said ends, said first end of said flexible tubing being in communication with said first hub for providing communication between said lumen of said first cannula and said passage through said flexible tubing, a second hub having a passage extending therethrough and being in fluid communication with said second end of said flexible tubing, a non-patient cannula having opposite proximal and distal ends and a lumen extending between said ends, said distal end of said non-patient cannula being mounted to said second hub such that said lumen through said non-patient cannula communicates with said passage through said second hub, a multiple sample sleeve covering said non-patient cannula and mounted to said second hub. a venting mechanism providing communication between said passage and ambient surroundings, wherein said venting mechanism permits an outflow of air from said blood collection set to said ambient surroundings through said venting mechanism, and wherein said venting mechanism substantially prevents an outflow of fluid from said blood collection set to said ambient surroundings through said venting mechanism.
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Abstract
The blood collection set includes an IV needle assembly, a length of flexible plastic tubing extending from the IV needle assembly and a non-patient needle assembly. The set is formed with a venting mechanism that permits an outflow of air, while blocking an outflow of blood or other fluids. Thus, the venting mechanism enables air that had existed in interior portions of the blood collection set to be vented allowing for greater flash visualization on venous entry, and avoids the need to employ a discard tube.
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Citations
62 Claims
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1. A blood collection set comprising;
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a first needle assembly having a first hub and a first cannula mounted to said first hub, said first cannula having a lumen extending therethrough, a length of flexible tubing having opposite first and second ends and a passage extending between said ends, said first end of said flexible tubing being in communication with said first hub for providing communication between said lumen of said first cannula and said passage through said flexible tubing, a second hub having a passage extending therethrough and being in fluid communication with said second end of said flexible tubing, a non-patient cannula having opposite proximal and distal ends and a lumen extending between said ends, said distal end of said non-patient cannula being mounted to said second hub such that said lumen through said non-patient cannula communicates with said passage through said second hub, a multiple sample sleeve covering said non-patient cannula and mounted to said second hub. a venting mechanism providing communication between said passage and ambient surroundings, wherein said venting mechanism permits an outflow of air from said blood collection set to said ambient surroundings through said venting mechanism, and wherein said venting mechanism substantially prevents an outflow of fluid from said blood collection set to said ambient surroundings through said venting mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62)
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Specification