Processor 110 Indicator Unit 104- Transducer(s) 102 1 Wave Transmitter 1061 Power Supply 4 FIG. 1A (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 11 October 2018 (11.10.2018) D IV °nolo im Imo oimIE (10) International Publication Number WO 2018/186981 Al WIPO I PCT (51) International Patent Classification: G16H 20/17 (2018.01) A61M 25/00 (2006.01) A61B 17/22 (2006.01) (21) International Application Number: PCT/US2018/021218 (22) International Filing Date: 06 March 2018 (06.03.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15/477,291 03 April 2017 (03.04.2017) US (71) Applicant: BECTON, DICKINSON AND COMPANY [US/US]； 1 Becton Drive, Mail Code 110, Franklin Lakes, New Jersey 07417-1880 (US). (72) Inventors: WITT, Erik K.； 20 Sherwood Lane, Wyckoff, New Jersey 07481 (US). ISAACSON, S. Ray； 671 South 850 West, Layton, Utah 84041 (US). (74) Agent: METCALF, Craig et al.； Kirton McConkie, 36 South State Street, Suite 1900, Salt Lake City, Utah 84111 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (54) Title: SYSTEMS AND METHODS TO DETECT CATHETER OCCLUSION (57) : A system to detect occlusion of an intravenous catheter may include a housing, which may include a distal end configured to couple to a proximal end of a catheter adapter and an inner lumen forming a
