I.V. Flashback indication
OwnerJohn L. Vcelkainventor
Life of this patent
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Abstract
A flashback indicator which is integrally formed in a parenteral solution or blood set to serve as a patency check device. A length of clear plastic tubing having an enlarged portion is integrally connected in a parenteral fluid or blood set in such a manner that a patency check can be made without fear of the indicator becoming disconnected from the set during the supplementary administration of a drug such as by means of a hypodermic syringe. In a preferred manner, the flashback indicator is formed from bubble-like tubing wherein the wall thickness of the enlarged portion of the bubble is at least as large as that of the tubing in the set having a smaller and constant diameter.
Claims9
In an I.V. administration set including first and second component members of the type normally utilized in a parenteral solution administration set with flexible tubing secured to said components and one of said components including means for attachment to a hypodermic needle, said flexible tubing composed of a resinous plastic material compatible with parenteral solutions and secured to said first and second components in a manner such that the component members will remain integrally attached to said tubing even when said tubing is subjected to internal pressures normally associated with hypodermic syringes,
- the improvement comprising a flashback indicator of one-piece construction defined by an enlarged portion in the passageway of the tubing with said tubing having a wall thickness in said enlarged portion greater than the wall thickness of the tubing immediately adjacent said enlarged portion.
Dependencies are inferred from the claim text.