Patent ID: 11883629
Assignee: BECTON, DICKINSON AND COMPANY
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A sensor assembly for detecting fluid infiltration at a catheter infusion site in a patient, the sensor assembly comprising:
a first elongate sensor member configured to couple to a patient at a first location proximate a catheter infusion site;
a second elongate sensor member configured to couple to the patient at a second location proximate the catheter infusion site, the second elongate sensor member comprising an envelope, the envelope comprising:
an inferior elongate member; and
a superior elongate member coupled to the inferior elongate member and defining an interior space intermediate the inferior and superior elongate members,
wherein:
the interior space of the envelope is configured to receive the first elongate sensor member therein; and
an open end of the envelope is configured to allow a first end of the first elongate sensor member to protrude from the open end of the envelope;

a first marking coupled to the first elongate sensor member; and
a second marking coupled to the superior elongate member of the second elongate sensor member;
wherein:
the first elongate sensor member is slidably coupled within the second elongate sensor member such that the first and second elongate sensor members are translatable relative to each other, wherein the first elongate sensor member is configured to translate with respect to the second elongate sensor member in response to infiltration at the catheter infusion site;
the first and second markings are configured to indicate a range of relative positions between the first and second elongate sensor members as the first and second elongate sensor members translate relative to each other; and
at least one relative position within a range of relative positions between the first and second elongate sensor members is indicative of infiltration at the catheter infusion site.