Patent SG-11201807481U-A (SG)
Title: Rotational atherectomy device with a system of eccentric abrading heads
Inventor: CAMBRONNE MATTHEW D
IPC: A61D1/02
Filed: 2017-02-14
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/165013 Al 28 September 2017 (28.09.2017) WIPO I PCT 111111111111110111011111111111010111110111011111111100111110111011111111111110111111 W O 20 17 / 165 0 13 Al (51) International Patent Classification: A61B 17/22 (2006.01) A61D 1/02 (2006.01) (21) International Application Number: PCT/US2017/017770 (22) International Filing Date: 14 February 2017 (14.02.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15/075,979 21 March 2016 (21.03.2016) US (71) Applicant: CARDIOVASCULAR SYSTEMS, INC. [US/US]; 1225 Old Highway 8 NW, St. Paul, Minnesota 55112 (US). (72) Inventors: CAMBRONNE, Matthew D.; 1225 Old High- way 8 NW, St. Paul, Minnesota 55112 (US). KOHLER, Robert E.; 1225 Old Highway 8 NW, St. Paul, Minnesota 55112 (US). (74) Agent: STONE, JEFFREY R.; Barnes & Thornburg LLP, 225 S 6 St, Suite 2800, Minneapolis, Minnesota 55402 (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, 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: — with international search report (Art. 21(3)) = (54) Title: ROTATIONAL ATHERECTOMY DEVICE WITH A SYSTEM OF ECCENTRIC ABRADING HEADS (57) : The invention provides a rotational atherectomy device having, in various embodiments, a flexible, elongated, rotat - able drive shaft with a system of eccentric abrading heads attached thereto. At least part of the eccentric enlarged abrading heads in the system have a tissue removing surface-typically an abrasive surface. In certain embodiments, the abrading heads may be at least partially hollow. Preferably the eccentric enlarged abrading heads have centers of mass spaced radially from the rotational axis of the drive shaft, facilitating the ability of the system of eccentric abrading heads to work together to open the stenotic lesion to a diameter substantially larger than the outer resting diameter of the enlarged abrading heads when operated at high speeds. Therefore, certain embodiments comprise a system having unbalanced centers of mass to not only stimulate greater rotational diameters but also ar- ranged in a manner whereby a debris-removing augering effect occurs. Alternatively, other embodiments may comprise systems hav- ing abrading heads with balanced centers of mass.