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1. US20090306656 - Therapy apparatus for thermal sclerosing of body tissue

Office
États-Unis d'Amérique
Numéro de la demande 12462833
Date de la demande 10.08.2009
Numéro de publication 20090306656
Date de publication 10.12.2009
Type de publication A1
CIB
A61B 17/34
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
17Instruments, dispositifs ou procédés chirurgicaux, p.ex. tourniquets
34Trocarts; Aiguilles à ponction
A61B 18/14
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
18Instruments, dispositifs ou procédés chirurgicaux pour transférer des formes non mécaniques d'énergie vers le corps ou à partir de celui-ci
04par chauffage
12en faisant passer des courants à travers les tissus à chauffer, p.ex. des courants à haute fréquence
14Sondes ou électrodes à cet effet
A61B 18/12
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
BDIAGNOSTIC; CHIRURGIE; IDENTIFICATION
18Instruments, dispositifs ou procédés chirurgicaux pour transférer des formes non mécaniques d'énergie vers le corps ou à partir de celui-ci
04par chauffage
12en faisant passer des courants à travers les tissus à chauffer, p.ex. des courants à haute fréquence
A61N 1/06
ANÉCESSITÉS COURANTES DE LA VIE
61SCIENCES MÉDICALE OU VÉTÉRINAIRE; HYGIÈNE
NÉLECTROTHÉRAPIE; MAGNÉTOTHÉRAPIE; THÉRAPIE PAR RADIATIONS; THÉRAPIE PAR ULTRASONS
1Électrothérapie; Circuits à cet effet
02Parties constitutives
04Electrodes
06pour traitement à haute fréquence
Inventeurs Desinger Kai
Fay Markus
Roggan Andre
Rothe Rainer
Mandataires BECK AND TYSVER P.L.L.C.
Données relatives à la priorité 10224153 27.05.2002 DE
Titre
(EN) Therapy apparatus for thermal sclerosing of body tissue
Abrégé
(EN)

The application arrangement according to the invention for applying a high frequency current for thermal sclerosing of body tissue, includes:

    • an electrode needle 1 having an electrically conducting shaft 3,
    • at least one insulating casing body 7 which surrounds the electrically conducting shaft 3 and which is displaceable relative to the shaft 3 and which has a distal end from which the shaft 3 can be extended, and
    • at least one trocar 5 having a portion intended to be introduced into body tissue, a portion 11 intended to remain outside the body tissue, and a lumen 13 which extends through both portions and through which the shaft 3 of the electrode needle 1 is to be passed through the trocar 5.

The application arrangement according to the invention is distinguished in that the portion of the trocar 5 intended to be introduced into body tissue is electrically insulating and, in particular when the electrode needle or shaft 3 is passed through the lumen, forms the casing body 7 for the shaft 3 of the electrode needle 1.

The trocar 5 performs two functions. On the one hand it performs the conventional tasks of a trocar 5, more specifically for example permitting accurately targeted feed of drugs or removal of tissue and the introduction of electrode needles 1 without having to make a fresh puncture each time. On the other hand the part of the trocar 5 which is in the body serves as an insulating casing body 7 displaceable relative to the shaft 3 of the electrode needle 1 for adjusting the length of the active region of the shaft 3, that is to say that region which projects out of the insulating casing body 7 and is in electrically conductive contact with the body tissue when the electrode needle 1 is inserted into the body.