SG11201901639RA - Electrosurgical instrument - Google Patents

Abstract

218 214 212 220 209 216 206 210 (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 04 October 2018 (04.10.2018) W I PO I PCT ill 1111u°11101VIIIVIIIVIIIolo oloitimiomommo oimIE (10) International Publication Number WO 2018/178244 Al (51) International Patent Classification: A61B 18/18 (2006.01) (21) International Application Number: PCT/EP2018/058092 (22) International Filing Date: 29 March 2018 (29.03.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 1705172.3 30 March 2017 (30.03.2017) GB (71) Applicant: CREO MEDICAL LIMITED [GB/GB]; Creo House Unit 2, Beaufort Park, Beaufort Park Way, Chepstow Monmouthshire NP16 5UH (GB). (72) Inventors: HANCOCK, Christopher Paul; 37 Napier Road, Bath, Bath and North East Somerset BA1 4LN (GB). BURN, Patrick; c/o Creo Medical Limited, Creo House Unit 2, Beaufort Park, Beaufort Park Way, Chepstow, Mon- mouthshire NP16 5UH (GB). WHITE, Malcolm; c/o Creo Medical Limited, Creo House Unit 2, Beaufort Park, Beau- fort Park Way, Chepstow, Monmouthire NP16 5UH (GB). (74) Agent: JOHNSON, Richard et al.; Mewburn Ellis LLP, City Tower, 40 Basinghall Street, London Greater London EC2V 5DE (GB). (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. (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). Declarations under Rule 4.17: — of inventorship (Rule 4.17(iv)) Published: — with international search report (Art. 21(3)) before the expiration of the time limit for amending the claims and to be republished in the event of receipt of amendments (Rule 48.2(h)) = (54) Title: ELECTROSURGICAL INSTRUMENT \\\\\\\\\\\\\\\\\\\\\\\ \\\\\\`\ • 4111 • • • 0- • 208 202 204 FIG. 2 (57) : An electrosurgical instrument with a radiating tip portion having a relative permeability and/or relative permittivity that is selected to provide an electrical length for the radiating tip portion that enables effective delivery into biological tissue of microwave EM energy supplied thereto, at two or more frequencies of choice. The instrument has a radiating tip portion disposed to receive microwave EM energy from a coaxial cable, the radiating tip portion having a first effective relative permeability at a first frequency and a second effective relative permeability at a second frequency. 1-1 N GC N 1-1 00 O 1-1 N C