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1. (WO2014199167) ELECTROACTIVE ACTUATORS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2014/199167 International Application No.: PCT/GB2014/051813
Publication Date: 18.12.2014 International Filing Date: 12.06.2014
IPC:
A61M 1/10 (2006.01) ,A61F 2/00 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
M
DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
1
Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10
Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
F
FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2
Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
Applicants:
THE NOTTINGHAM TRENT UNIVERSITY [GB/GB]; Clifton Lane Nottingham Nottinghamshire NG11 8NS, GB
NOTTINGHAM UNIVERSITY HOSPITALS NHS TRUST [GB/GB]; City Hospitals Campus Hucknall Road Nottingham Nottinghamshire NG5 1PB, GB
Inventors:
BREEDON, Philip; GB
COULTER, Fergal; GB
RICHENS, David; GB
Agent:
BARKER BRETTELL LLP; 100 Hagley Road Edgbaston Birmingham West Midlands B16 8QQ, GB
Priority Data:
1310578.813.06.2013GB
Title (EN) ELECTROACTIVE ACTUATORS
(FR) ACTIONNEURS ÉLECTRO-ACTIFS
Abstract:
(EN) The invention relates to actuators based on electroactive polymeric materials for use in pumping fluids or in other applications where a contractile actuation is required, in particular although not necessarily exclusively for use in vascular pulsation devices such as a variable aortic tension device. Embodiments disclosed include an actuator ( 10) comprising: an inner tubular structure (15, 12); an outer tubular structure (13, 14) surrounding the inner tubular structure ( 5, 12) and comprising a plurality of layers of a dielectric elastomeric material ( 13) and a tubular elastic support structure ( 14), the elastic support structure (14) configured to maintain a pre-stress in the layers of the dielectric elastomeric material (13), wherein the outer tubular structure (13, 14) is configured to contract in a radial direction around the inner tubular structure (12, 15) upon application of an actuation voltage signal across the dielectric elastomeric material layers (13).
(FR) L'invention concerne des actionneurs utilisant des matériaux polymères électro-actifs, que l'on utilise dans le pompage de fluides ou d'autres applications où un actionnement par contraction est nécessaire, notamment, mais pas nécessairement de manière exclusive, dans des dispositifs de pulsation vasculaire comme un dispositif de tension aortique variable. Les modes de réalisation portent sur un actionneur (10) comprenant : une structure tubulaire interne (15, 12); une structure tubulaire externe (13, 14) entourant la structure tubulaire interne (15, 12) et comprenant plusieurs couches d'un matériau élastomère diélectrique (13) et une structure de support élastique tubulaire (14), laquelle structure de support élastique tubulaire (14) est conçue pour maintenir une précontrainte dans les couches du matériau élastomère diélectrique (13), la structure tubulaire externe (13, 14) étant conçue pour se contracter dans une direction radiale autour de la structure tubulaire interne (15, 12) lors de l'application d'un signal de tension d'actionnement dans les couches de matériau élastomère diélectrique (13).
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Designated States: 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, 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, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)