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1. WO2014199167 - ELECTROACTIVE ACTUATORS

Publication Number WO/2014/199167
Publication Date 18.12.2014
International Application No. PCT/GB2014/051813
International Filing Date 12.06.2014
IPC
A61M 1/10 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
1Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
10Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
A61F 2/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
CPC
A61F 2/0036
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2Filters 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
0004Closure means for urethra or rectum, i.e. anti-incontinence devices or support slings against pelvic prolapse
0031for constricting the lumen; Support slings for the urethra
0036implantable
A61F 2250/0001
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS 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
2250Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
0001Means for transferring electromagnetic energy to implants
A61M 2205/0283
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
2205General characteristics of the apparatus
02characterised by a particular materials
0272Electro-active or magneto-active materials
0283Electro-active polymers [EAP]
A61M 2207/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
2207Methods of manufacture, assembly or production
A61M 60/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
60Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
A61M 60/139
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
60Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
10Location thereof with respect to the patient's body
122Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
126implantable via, into, inside, in line, branching on, or around a blood vessel
135inside a blood vessel, e.g. using grafting
139inside the aorta, e.g. intra-aortic balloon pumps
Applicants
  • THE NOTTINGHAM TRENT UNIVERSITY [GB]/[GB]
  • NOTTINGHAM UNIVERSITY HOSPITALS NHS TRUST [GB]/[GB]
Inventors
  • BREEDON, Philip
  • COULTER, Fergal
  • RICHENS, David
Agents
  • BARKER BRETTELL LLP
Priority Data
1310578.813.06.2013GB
Publication Language English (en)
Filing Language English (EN)
Designated States
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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