Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
TREATMENT USING IMPLANTABLE DEVICES
Document Type and Number:
WIPO Patent Application WO/2000/004946
Kind Code:
A2
Abstract:
A method of treatment using implantable devices is disclosed. The method comprises (a) implanting into the body of the human or non-human animal (i) a rectenna capable of receiving electromagnetic radiation in the microwave frequency range and of generating and/or storing electrical energy therefrom; and (ii) an electrically operated therapeutic device arranged to receive electrical energy from said rectenna; and (b) directing electromagnetic radiation in the microwave frequency range from a source external to the body being treated towards the position of the implanted rectenna so as to generate electrical energy to actuate said therapeutic device.

Inventors:
HABIB NAGY ADLY (GB)
SANGSTER ALAN JOHN (GB)
Application Number:
PCT/GB1999/002393
Publication Date:
February 03, 2000
Filing Date:
July 22, 1999
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
IMP COLLEGE INNOVATIONS LTD (GB)
HABIB NAGY ADLY (GB)
SANGSTER ALAN JOHN (GB)
International Classes:
A61B5/00; A61B5/01; A61F2/02; A61N1/372; A61N1/378; A61N1/40; A61N2/10; A61N5/02; A61N5/04; (IPC1-7): A61N/
Domestic Patent References:
WO1995007048A11995-03-16
Foreign References:
US4075632A1978-02-21
US4143661A1979-03-13
US5626630A1997-05-06
US5314453A1994-05-24
US5749909A1998-05-12
US3852755A1974-12-03
US5606323A1997-02-25
Other References:
None
Attorney, Agent or Firm:
Abrams, Michael John (Haseltine Lake & Co. Imperial House 15-19 Kingsway London WC2B 6UD, GB)
Download PDF:
Claims:
CLAIMS :
1. A method of performing treatment, e. g. hypothermia treatment, in a human or nonhuman animal, which comprises the steps of : (a) implanting into the body of the human or nonhuman animal (i) a device capable of receiving electromagnetic radiation in the microwave frequency range and of generating and/or storing electrical energy therefrom ; and (ii) an electrically operated therapeutic device arranged to receive electrical energy from said device ; and (b) directing electromagnetic radiation in the microwave frequency range from a source external to the body being treated towards the position of the implanted device so as to generate electrical energy to actuate said therapeutic device.
2. A method as claimed in claim 1, characterised in that said device is a rectenna.
3. A method as claimed in claim 1 or 2, characterised in that said electrically operated therapeutic device is one or more of : (1) a device for delivering heat in a localised manner, e. g. to treat a tumour ; (2) a pump for assisting blood flow ; (3) a stent for ensuring lumen patency of hollow viscera and ducts, e. g. oesophagus, bile duct, pancreatic duct, colon, stomach, rectum and urethra ; (4) a pressure sensor for detecting localised pressures, e. g. within a stent as defined above ; (5) a flow meter for determining passage of a fluid through a duct ; (6) a drug release device ; (7) a pacemaker ; and (8) a detector for a particular chemical or biological material or species, e. g. blood or tissue chemical content or cellular content.
4. A method as claimed in claim 3, characterised in that said therapeutic device comprises one or more needlelike dipole elements for implanting into a tumour.
5. A method as claimed in claim 3, characterised in that said therapeutic device comprises an electrode or an assembly of electrodes adapted to heat adjacent tissues.
6. A method as claimed in claim 5, characterised in that said electrode or assembly of electrodes is positioned around a tumour.
7. A method as claimed in claim 3, characterised in that said therapeutic device comprises a stent which is arranged to be heated.
8. A method as claimed in any preceding claim, characterised in that said electromagnetic radiation is at a frequency in the range 12 GHz.
9. A method as claimed in claim 8, characterised in that input of radiation to the body is achieved by means of a high frequency magnetic field coupler operating in the region of 1, 0002, 000 MHz.
10. A method as claimed in claim 9, characterised in that said magnetic field coupler is designed to carry at least 15 watts power during irradiation treatment.
Description:
INTERNATIONAL SEARCH REPORT lnt,"ational Application No Pc, n/GB 99/02393 C. (Continuation) DOCUMENTS CONSIDERED TO BE RELEVANT Category ° Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No. A MCSPADDEN J 0 ET AL:"A NOVEL OSCILLATING RECTENNA FOR WIRELESS MICROWAVE POWER TRANSMISSION" 1998 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST. IMS'98 PROGRESS THROUGH MICROWAVES, BALTIMORE, MD, JUNE 7-12, 1998, vol. 2,7 June 1998 (1998-06-G7), pages 1161-1164,XP000822166 MEIXNER R (ED) ISBN: 0-7803-4472-3 A US 5 606 323 A (FRIEDMAN DANIEL J ET AL) 25 February 1997 (1997-02-25) A WO 95 07048 A (BESSON MARCUS; CZETTRIZ GOTTHART V (DE); BAX RALPH (DE)) 16 March 1995 (1995-03-16) 2 srnational application No. INTERNATIONAL SEARCH REPORT PCT/GB 99/02393 Box I Observatlons where certain claims were found unsearchable (Continuation of item 1 of first sheet) This International Search Report has not been established in respect of certain claims under Article 17 (2) (a) for the following reasons: 1. g Claims Nos.: 1-10 because they relate to subject matter not required to be searched by this Authority, namely: Rule 39.1 (iv) PCT-Method for treatment of the human or animal body by therapy: the search report refers to generic devices powered by electromagnetic radiation 2. jj Claims Nos.: because they relate to parts of the International Application that do not comply with the prescribed requirements to such an extent that no meaningful International Search can be carried out, specifically : 3. Claims Nos.: because they are dependent claims and are not drafted in accordance with the second and third sentences of Rule 6.4 (a). Box 11 Observations where unity of invention Is lacking (Continuation of Item 2 of first sheet) This International Searching Authority found multiple inventions in this international application, as follows: 1. n As all required additional search fees were timely paid by the applicant, this International Search Report covers all searchable claims. 2. As ait searchable claims could be searched without effort justifying an additional fee, this Authority did not invite payment of any additional fee. 3. As only some of the required additional search fees were timely paid by the applicant, this International Search Report covers only those claims for which fees were paid, specifically claims Nos.: 4. No required additional search fees were timely paid by the applicant. Consequently, this International Search Report is restricted to the invention first mentioned in the claims; it is covered by claims Nos.: Remark on Protest The additional search fees were accompanied by the applicant's protest. j No protest accompanied the payment of additional search fees. u INTERNATIONAL SEARCH REPORT Irtt'atlonal Application No Information on patent family members PD/GB 99/02393 Patent document Publication Patent family Publication cited in search report date member (s) date US 4075632 A 21-02-1978 NONE US 4143661 A 13-03-1979 NONE US 5626630 A 06-05-1997 NONE US 5314453 A 24-05-1994 NONE US 5749909 A 12-05-1998 NONE US 3852755 A 03-12-1974 US 3745569 A 10-07-1973 US 5606323 A 25-02-1997 JP 9074370 A 18-03-1997 US 5889489 A 30-03-1999 WO 9507048 A 16-03-1995 DE 4329898 A 06-04-1995 DE 59403133 D 17-07-1997 EP 0719108 A 03-07-1996 US 5862803 A 26-01-1999 US 5957854 A 28-09-1999