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DE502268T1 - Elektrochirurgisches instrument mit einer nadelelektrode zum schneiden und einer punktelektrode zum koagulieren. - Google Patents

Elektrochirurgisches instrument mit einer nadelelektrode zum schneiden und einer punktelektrode zum koagulieren.

Info

Publication number
DE502268T1
DE502268T1 DE199191301755T DE91301755T DE502268T1 DE 502268 T1 DE502268 T1 DE 502268T1 DE 199191301755 T DE199191301755 T DE 199191301755T DE 91301755 T DE91301755 T DE 91301755T DE 502268 T1 DE502268 T1 DE 502268T1
Authority
DE
Germany
Prior art keywords
conductor
electrosurgical instrument
instrument according
another
conductive surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DE199191301755T
Other languages
English (en)
Inventor
Mark A. Golden Valley Minnesota 55434 Rydell
Original Assignee
Everest Medical Corp., Minneapolis, Minn.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Everest Medical Corp., Minneapolis, Minn. filed Critical Everest Medical Corp., Minneapolis, Minn.
Publication of DE502268T1 publication Critical patent/DE502268T1/de
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1477—Needle-like probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1402—Probes for open surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/00234—Surgical instruments, devices or methods for minimally invasive surgery
    • A61B2017/00292—Surgical instruments, devices or methods for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00107—Coatings on the energy applicator
    • A61B2018/00119—Coatings on the energy applicator with metal oxide nitride
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00184—Moving parts
    • A61B2018/00196—Moving parts reciprocating lengthwise
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00607—Coagulation and cutting with the same instrument
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/1206—Generators therefor
    • A61B2018/1246—Generators therefor characterised by the output polarity
    • A61B2018/126—Generators therefor characterised by the output polarity bipolar
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1472—Probes or electrodes therefor for use with liquid electrolyte, e.g. virtual electrodes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/16—Indifferent or passive electrodes for grounding
    • A61B2018/162—Indifferent or passive electrodes for grounding located on the probe body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—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
    • A61M3/00—Medical syringes, e.g. enemata; Irrigators
    • A61M3/02—Enemata; Irrigators
    • A61M3/0279—Cannula; Nozzles; Tips; their connection means

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Public Health (AREA)
  • Cardiology (AREA)
  • Surgical Instruments (AREA)

Claims (8)

&mgr; &iacgr; * &Pgr; ■ 301 755.4 Everest Medical Corporation Patentansprüche:
1. Elektrochirurgisches Instrument, gekennzeichnet durch: (a)ein verlängertes, rohrförmiges Element mit einem proximalen Ende, einem distalen Ende und mehreren Lumen, die sich zwischen dem proximalen und dem distalen Ende erstrecken;
(b)ein am distalen Ende des rohrförmigen Elements befestigtes kugelförmiges Keramik-Spitzenelement mit einem darin eingeformten Langloch, wobei dieses Langloch in einer Öffnung in der Außenfläche des Spitzenelements an einer Stelle mündet, die seitlich gegenüber der Längsachse des rohrförmigen Elements versetzt ist; (c)einen ersten, in einem der Lumen angeordneten Leiter;
(d)eine am proximalen Ende des rohrförmigen Elements angeschlossene und mit dem ersten Leiter verbundene Einrichtung zur selektiven Verschiebung des ersten Leiters, wodurch das distale Ende des ersten Leiters dazu gebracht werden kann, durch das Langloch und die Öffnung zu verlaufen;
(e)eine an der Außenfläche des Spitzenelements haftende leitende Oberfläche, die die Öffnung in einem Abstand umgibt; und
(f)einen zweiten Leiter, der durch ein anderes der mehreren Lumen geführt und elektrisch mit der leitenden Oberfläche verbunden ist.
2. Elektrochirurgisches Instrument gemäß Anspruch 1, dadurch gekennzeichnet, daß die leitende Oberfläche erste und zweite Segmente enthält, die gegeneinander isoliert und im Abstand zueinander auf dem Spitzenelement angebracht sind.
3. Elektrochirurgisches Instrument gemäß Anspruch 2, dadurch gekennzeichnet, daß es weiterhin einen dritten Leiter enthält, der durch ein weiteres der mehreren Lumen verläuft und elektrisch mit dem ersten oder zweiten Segmente verbunden ist, das nicht am zweiten Leiter angeschlossen ist.
4. Elektrochirurgisches Instrument gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Keramik aus einer Gruppe gewählt wird, die Aluminiumoxid und Aluminiumnitrid umfaßt, und daß die leitende Oberfläche aus Silber besteht.
5. Elektrochirurgisches Instrument gemäß Anspruch 1, dadurch gekennzeichnet, daß es weiterhin eine Einrichtung zur Kopplung der ersten und zweiten Leiter an eine HF-Spannung enthält, so daß ein Lichtbogen zwischen dem Abschnitt des ersten, durch die Öffnung nach außen geführten Leiters und der leitenden Oberfläche erzeugt wird, wenn der Abschnitt des ersten Leiters und der Oberfläche mit dem Körpergewebe in Berührung gebracht wird.
6. Elektrochirurgisches Instrument gemäß Anspruch 3, dadurch gekennzeichnet, daß es weiterhin eine Einrichtung zur Kopplung des ersten und dritten Leiters an die HF-Spannung zur Koagulation der Körperflüssigkeiten enthält.
7. Elektrochirurgisches Instrument gemäß Anspruch l, dadurch gekennzeichnet, daß die am proximalen Ende des rohrförmigen Elements angeschlossene Einrichtung eine Nabe mit einem durch diese Nabe geführten federbelasteten Kolben enthält, wobei dieser Kolben mit dem ersten Leiter gekoppelt ist.
8. Elektrochirurgxsches Instrument gemäß Anspruch 3, dadurch gekennzeichnet, daß der zweite und dritte Leiter miteinander verbunden sind, wenn der erste Leiter an eine HF-Spannungsquelle angeschlossen ist.
DE199191301755T 1989-09-29 1991-03-04 Elektrochirurgisches instrument mit einer nadelelektrode zum schneiden und einer punktelektrode zum koagulieren. Pending DE502268T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/414,448 US5007908A (en) 1989-09-29 1989-09-29 Electrosurgical instrument having needle cutting electrode and spot-coag electrode

Publications (1)

Publication Number Publication Date
DE502268T1 true DE502268T1 (de) 1993-03-18

Family

ID=23641494

Family Applications (1)

Application Number Title Priority Date Filing Date
DE199191301755T Pending DE502268T1 (de) 1989-09-29 1991-03-04 Elektrochirurgisches instrument mit einer nadelelektrode zum schneiden und einer punktelektrode zum koagulieren.

Country Status (4)

Country Link
US (1) US5007908A (de)
EP (1) EP0502268A1 (de)
DE (1) DE502268T1 (de)
ES (1) ES2036511T1 (de)

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US5007908A (en) 1991-04-16
EP0502268A1 (de) 1992-09-09
ES2036511T1 (es) 1993-06-01

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