Patent SG-11201906823R-A (SG)
Title: Electrosurgical apparatus for tissue ablation
Inventor: HANCOCK CHRISTOPHER PAUL
IPC: A61B18/18
Filed: 2018-05-03
Abstract: 301 302 314 304 321 303 306 309 320 318 310 308 312 316 322 FIG. 3 W O 20 18/ 20 275 8 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 08 November 2018 (08.11.2018) WIPO I PCT ill 1111u°11101VIIIVIIIVIIIo mull olo imio oimIE (10) International Publication Number WO 2018/202758 Al (51) International Patent Classification: A61B 18/18 (2006.01) (21) International Application Number: PCT/EP2018/061316 (22) International Filing Date: 03 May 2018 (03.05.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 1707112.7 04 May 2017 (04.05.2017) GB (71) Applicant: CREO MEDICAL LIMITED [GB/GB]; Creo House Unit 2, Beaufort Park, Beaufort Park Way, Chep- stow, 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). CAMPION, Charlie; 36 Fairfield Road, Montpelier, Bristol BS6 5JP (GB). TURN- ER, Louis; c/o Creo Medical Limited, Creo House Unit 2, Beaufort Park, Beaufort Park Way, Chepstow, Mon- mouthshire 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, (54) Title: ELECTROSURGICAL APPARATUS FOR TISSUE ABLATION (57) : An electrosurgical apparatus for treating fluid-filled biological growths by replacing the fluid within the growth with a substance that assists in delivering treatment energy. The treatment energy may be microwave energy or may be thermal energy derived from microwave energy. The apparatus comprises an instrument having a radiating tip portion, and a fluid delivery mechanism for transporting fluid to and from a treatment zone located around the radiating tip portion. The fluid delivery mechanism comprises a rigid insertion element arranged to extend into the treatment zone, whereby fluid can be aspirated from the treatment zone, and a substance injected into the treatment zone to replace the aspirated fluid. The injected substance has dielectric properties selected to facilitate uniform delivery of treatment energy to biological tissue in the treatment zone. [Continued on next page] WO 2018/202758 Al MIDEDIM01101 DIDIIMEN111111111111111111111111110111101111111111111111111 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))