CPC A61M 5/165 (2013.01) [A61M 5/1411 (2013.01); A61M 5/38 (2013.01); B29C 45/14065 (2013.01); B29C 65/08 (2013.01); B29C 65/4825 (2013.01); B29C 65/70 (2013.01); B29C 70/68 (2013.01); A61M 2005/1657 (2013.01); A61M 2205/7527 (2013.01); A61M 2207/00 (2013.01); B29C 65/16 (2013.01); B29C 65/4895 (2013.01); B29C 66/1122 (2013.01); B29C 66/30221 (2013.01); B29C 66/5326 (2013.01); B29C 66/5344 (2013.01); B29C 66/5346 (2013.01); B29C 66/53241 (2013.01); B29C 66/53421 (2013.01); B29C 66/612 (2013.01); B29C 66/71 (2013.01); B29C 66/712 (2013.01); B29C 66/73171 (2013.01); B29K 2105/20 (2013.01); B29K 2681/06 (2013.01); B29L 2023/007 (2013.01); B29L 2031/753 (2013.01)] | 9 Claims |
1. An intravenous delivery system comprising:
a drip unit comprising:
an exterior wall shaped to at least partially define a drip chamber that receives a liquid from a liquid source, wherein the exterior wall comprises a generally tubular shape, wherein the generally tubular shape comprises a reduced diameter portion and an annular surface, wherein the annular surface forms a seat;
a secondary exterior wall comprising a generally conical shape, wherein the secondary exterior wall receives the reduced diameter portion to engage the exterior wall with the secondary exterior wall; and
an anti-run-dry membrane comprising a plurality of pores that are permeable to the liquid, wherein the anti-run-dry membrane is formed of a hydrophilic material configured to resist passage of air through the pores, wherein the anti-run-dry membrane is secured to and contacts the secondary exterior wall, wherein the anti-run-dry membrane is proximate the seat.
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