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IV membrane attachment systems and methods

  • US 10,201,667 B2
  • Filed: 03/23/2016
  • Issued: 02/12/2019
  • Est. Priority Date: 03/26/2015
  • Status: Active Grant
First Claim
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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, the exterior wall comprising a seat;

    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; and

    a secondary exterior wall that cooperates with the exterior wall to define the drip chamber, wherein the secondary exterior wall includes an outer ring and an inner ring spaced apart from the outer ring to thereby form a recess between the outer and inner rings;

    wherein the seat of the exterior wall inserts into the recess of the secondary exterior wall to secure the exterior wall to the secondary exterior wall, and wherein a periphery of the anti-run-dry membrane extends into the recess and is secured between the seat and the inner ring.

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