IP Library › Granted Patent US 12,193,890
Granted Patent B2
US 12,193,890 · App. 18/144,283 · Granted Jan 14, 2025

Detection of residual fluid in endoscope channels

Inventors: Michelle M. Nerandzic (Lakewood, OH); Kathleen M. Antloga (Chardon, OH)
Assignee: American Sterilizer Company
A61B90/70A61B1/012G01N21/78G01N21/79A61B2090/701A61B2090/702
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Quick Facts
Patent No.
US 12,193,890
App. No.
18/144,283
Granted
Jan 14, 2025
Kind
B2
Abstract

A device and method for testing for the presence of liquid in a cannula of a medical instrument is described. The device includes a flexible guide member having a first end, a second end and a length extending from the first end to the second end, an elongated member arranged within the flexible guide member, and an absorbent material attached to one of the elongated member. The flexible guide member is inserted into the cannula, the flexible guide member is manipulated to cause the absorbent material to move through the cannula. The absorbent material is analyzed for the presence of liquid.

Claims (14)

1. A device for testing for the presence of liquid in a channel of a medical instrument, comprising:

a base configured to be grasped by a user; and

at least one probe attached to the base, the at least one probe extending out from the base and comprising a first absorbent material, wherein the at least one probe is configured to be inserted into a channel of a medical instrument, and wherein the base comprises a second absorbent material.

2. The device according to claim 1 , wherein the base comprises a plurality of layers, and a portion of the at least one probe is arranged between the plurality of layers.

3. The device according to claim 1 , wherein the base comprises a planar surface.

4. The device according to claim 1 , wherein the base comprises a flexible material.

5. The device according to claim 1 , wherein the first absorbent material comprises a hydrophilic element.

6. The device according to claim 1 , wherein the first absorbent material comprises a thread element having a first thread end and a second thread end, and at least one of the first thread end or the second thread end is frayed.

7. The device according to claim 6 , wherein only the first thread end is frayed.

8. The device according to claim 6 , wherein the thread element is impregnated with a material that changes color in the presence of liquid.

9. The device according to claim 6 , wherein the thread element comprises at least one of a natural fiber or a synthetic fiber.

10. The device according to claim 6 , wherein the thread element comprises frayed cotton.

11. The device according to claim 6 , wherein at least a portion of the thread element is twisted around the probe.

12. The device according to claim 6 , wherein the thread element is fixed to the probe using an adhesive.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 8, 2023
From: NERANDZIC, MICHELLE M.; ANTLOGA, KATHLEEN M.
To: AMERICAN STERILIZER COMPANY
Reel/Frame 063892/0473 →
Continuity (2)
Continuation 17060847 · Oct 1, 2020
Related Publication 20230270525A1 · Aug 31, 2023
References Cited (20)
US 4931051A · Castello · 1990 [cited by applicant]
US 5179024A · Dahms · 1993 [cited by applicant]
US 6043096A · Evtodienko et al. · 2000 [cited by applicant]
US 6699331B1 · Kritzler · 2004 [cited by applicant]
US 10471189B2 · O'Keefe et al. · 2019 [cited by applicant]
US 20080251102A1 · Haack et al. · 2008 [cited by applicant]
US 20100139018A1 · Maslanka · 2010 [cited by examiner]
US 20110106019A1 · Bagwell et al. · 2011 [cited by applicant]
US 20140237748A1 · Sweeney · 2014 [cited by examiner]
US 20140250614A1 · Pisacane · 2014 [cited by examiner]
US 20160010139A1 · MacKay et al. · 2016 [cited by applicant]
JP H0889477A · 1996 [cited by applicant]
JP 3406081B2 · 2003 [cited by examiner]
WO WO2018199189A1 · 2018 [cited by applicant]
Loeve et al., “Scopes Too Flexible . . . and Too Stiff,” IEEE Pulse, 1(3), pp. 26-41, Nov. 2010. [cited by applicant]
Salloum, “How to Achieve Clinically Dry Medical Device Lumens,” Witt/Salloum/Price & Associates Consulting, Cenorin LLC, Apr. 2020. [cited by applicant]
Instruction Manual from Healthmark Industries, Co., Instructions for Use: HydroCheck Moisture Detection Test, Jan. 23, 2020. <http://www.healthmark.info/CleaningVerification/HydroCheck/HydroCheck_IFU_2020-01-23.pd. [cited by applicant]
International Search Report issued in corresponding International Patent Application No. PCT/US2021/049192 dated Dec. 23, 2021. [cited by applicant]
Written Opinion of the International Searching Authority issued in corresponding International Patent Application No. PCT/US2021/049192 dated Dec. 23, 2021. [cited by applicant]
Alfa, M., “Impact of wet storage and other factors on biofilm formation and contamination of patient-ready endoscopes: a narrative review,” Gastrointestinal Endoscopy vol. 91, No. 2, pp. 236-247, 2020. [cited by applicant]