DE2324658A1 - DEVICE FOR COAGULATING BY USING HF CURRENT - Google Patents
DEVICE FOR COAGULATING BY USING HF CURRENTInfo
- Publication number
- DE2324658A1 DE2324658A1 DE2324658A DE2324658A DE2324658A1 DE 2324658 A1 DE2324658 A1 DE 2324658A1 DE 2324658 A DE2324658 A DE 2324658A DE 2324658 A DE2324658 A DE 2324658A DE 2324658 A1 DE2324658 A1 DE 2324658A1
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- Germany
- Prior art keywords
- electrodes
- electrode
- spacer
- shaft
- distal
- 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.)
- Withdrawn
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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
- A61B18/1485—Probes or electrodes therefor having a short rigid shaft for accessing the inner body through natural openings
-
- 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
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/30—Surgical pincettes without pivotal connections
-
- 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
- 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
Description
Ί Mai 1073 Ί May 1073
Th,W./Bö.Th, W. / Bö.
Anmelder: Richard Wolf GmbH, 7134 Knittlingen, Pforzheimer Str. 22Applicant: Richard Wolf GmbH, 7134 Knittlingen, Pforzheimer Str. 22
Vorrichtung zum Koagulieren mittels HF-StromDevice for coagulation using HF current
Die Erfindung betrifft eine Vorrichtung zum Koagulieren mittels HF-Stron, bestehend aus zwei an unterschiedliches Potential zu legenden Elektroden, zwischen denen nach Anlage an Körpergewebe der Koagulationsstrom fließt, und weiterhin bestehend aus einem Schaft, an dessen distalem Ende eine Koagulationseinrichtung vorgesehen ist.The invention relates to a device for coagulation by means of HF-Stron, consisting of two at different potentials laying electrodes, between which the coagulation current flows after contact with body tissue, and also consisting of a Shaft, at the distal end of which a coagulation device is provided.
Bei bekannten Vorrichtungen dieser Art besteht die Koagulationseinrichtung aus einer einpoligen Elektrode, die über eine durch den Schaft laufende leitung an ein von Masse verschiedenes Potential gelegt werden kann. Als zweite Elektrode kommt meist ein Massepol in Form einer Blatte zur Anwendung, die z.B. am Oberschenkel der zu behandelnden Person angebracht wird.In known devices of this type, the coagulation device consists of a single-pole electrode, which has a through The line running through the shaft can be connected to a potential other than ground. Usually comes as the second electrode A ground pole in the form of a sheet for use, which is attached, for example, to the thigh of the person to be treated.
Beim Koagulationsvorgang wird die am Schaftende befindliche Elektrode an das zu koagulierende Gewebe gelegt, um z.B. nach einer durchgeführten Biopsie eine evtl. auftretende Blutstillung durch Gewebekoagulation zu erreichen. Dieser Vorgang beruht im wesentlichen darauf, daß aufgrund der Potentialdifferenz zwischen den von einem HF-Gerät gespeisten Elektroden ein Stromfluß durchDuring the coagulation process, the electrode located at the end of the shaft is placed on the tissue to be coagulated, e.g. in order to a performed biopsy to achieve hemostasis by tissue coagulation. This process is based on It is essential that, due to the potential difference between the electrodes fed by an HF device, a current flows through
4098497%£8S4098497% £ 8S
das Körpergewebe erfolgt, der bei entsprechender Dosierung eine Verkochung des Gewebes verursacht, und zwar im Bareich der direkt an der Vorrichtung befindlichen Elektrode, da diesa geringere Abmessungen als die Masseelektrode hat und deshalb höhere Stromdichten an der Übergangsstelle zwischen ihr und dem Gewebe erzeugt.the body tissue takes place, which causes boiling of the tissue with the appropriate dosage, in the bar area of the electrode located directly on the device, since this has smaller dimensions than the ground electrode and therefore higher current densities generated at the interface between it and the tissue.
Bei den bekannten Vorrichtungen ist die Strecke zwischen den Elektroden und somit der vom Strom zurückzulegende Weg relativ lang, so daß sich naturgemäß ein hoher Leistungsabfall und damit verbunden häufig unbefriedigende Koagulationsergebnisse ergeben. Eine in solchen Fällen evtl. wünschenswerte Erhöhung der Betriebsspannung ist nicht immer möglich, und zwar wegen der damit verbundenen Gefahren für den Patienten.In the known devices, the distance between the electrodes and thus the path to be covered by the current is relative long, so that naturally there is a high drop in performance and, associated therewith, often unsatisfactory coagulation results. A possibly desirable increase in the operating voltage in such cases is not always possible because of the associated risks for the patient.
Im übrigen macht sich noch besonders nachteilig bemerkbar, daß die plattenförmige Massenelektrode oft nicht völlig eben auf dem Körper des Patienten liegt, sondern nur mit einem Teil ihrer leitenden Fläche. Im Betrieb können sich deshalb örtlich die Stromdichten derart erhöhen, daß Verbrennungen im Bereich der Masseelektrode vorkommen.In addition, it is particularly disadvantageous that the plate-shaped ground electrode is often not completely flat the patient's body, but only with part of its conductive surface. In operation, the Increase current densities in such a way that burns occur in the area of the ground electrode.
Um diese Nachteile auszuschalten, wird die eingangs erwähnte Koagulationseinrichtung erfindungsgemäß so ausgebildet, daß beide Elektroden durch ein Isoliermittel voneinander getrennt unmittelbar am distalen Endbereich des Schaxes angeordnet sind.In order to eliminate these disadvantages, the initially mentioned coagulation device is designed according to the invention in such a way that both electrodes separated from each other by an insulating means are arranged directly on the distal end of the Schaxes.
- 3 409849/CH86 - 3 409849 / CH86
232A658232A658
Bei dieser Ausführungsforia können also beide Elektroden an das cu l-:oagulierende Gewebe gelegt werden mit dem Vorteil, daß ein kurzer Strocipfad zwischen den Elektroden vorliegt und ca£ ein nur geringer Leistungsabfall zu verzeichnen ist. Weiterhin entfällt die sonst gesondert zu handhabende großflächige lilöktrode, wodurch ungewollte Verletzungen und Verbrennungen vermieden werden, zumal der behandelnde Arzt jetzt in der Lage ist, beide Elektroden im Blickfeld zu haben und zu führen.In this embodiment, both electrodes can to be placed on the cu l-: oagulating tissue with the advantage of that there is a short straw path between the electrodes and approx £ there is only a slight decrease in performance. Farther There is no need for the large-area lilöktrode, which would otherwise have to be handled separately, causing unwanted injuries and burns should be avoided, especially since the attending physician is now able to have and guide both electrodes in the field of vision.
Durch entsprechende Wahl der Größe der leitenden und an das Gewebe anzulegenden Elektrodenflächen hat man außerdem die 24öglichkeit, genau bestimmen zu können, welche der beiden Elektroden nehr oder weniger in den Koagulationsvorgang einbezogen werden soll. Dieser Umstand kann wichtig für solche Fälle werden, in denen man besonders und bevorzugt eine bestimmte Elektrode an einem speziellen Gewebebereich arbeiten lassen will. Dieser Elektrode würde man dann wegen der erforderlichen hohen Stromdichte eine kleinere wirksame Fläche als der anderen Elektrode geben.By appropriately choosing the size of the conductive and attached to the tissue electrode surfaces to be applied, you also have the option of to be able to determine exactly which of the two electrodes be more or less involved in the coagulation process target. This fact can be important in those cases in which one particularly and preferably attaches a certain electrode want to have a special area of tissue work. This electrode would then be used because of the high current density required give a smaller effective area than the other electrode.
In der anliegenden Zeichnung sind einige Ausführungsbeispiele der Erfindung dargestellt. Es zeigt:Some exemplary embodiments of the invention are shown in the accompanying drawings. It shows:
Fig. 1 einen Längsschnitt durch eine Koagulationsvorrichtung nach der Erfindung,1 shows a longitudinal section through a coagulation device according to the invention,
Fig. 2 einen Schnitt durch das distale Ende einer weiteren Vorrichtung,2 shows a section through the distal end of a further device,
- 4 4098A9/0486 - 4 4098A9 / 0486
Fig. 3 einen Schnitt durch das distale Ende3 shows a section through the distal end
einer anderen möglichen Ausführungsform,another possible embodiment,
Fig. 4a eine Stirnansicht auf das distale Ende einer mit konzentrischen Elektroden arbeitenden Torrichtung,4a shows an end view of the distal end of a working with concentric electrodes Gate direction,
Fig. 4b einen Längsschnitt durch die AusfUhrungsform gemäß Fig. 4a,4b shows a longitudinal section through the embodiment according to Fig. 4a,
Fig. 5a eine Stirnansicht auf das distale Ende einer Koagulationsvorrichtung mit abgewandelter Ausbildung der Elektroden,5a shows an end view of the distal end of a coagulation device with a modified one Formation of electrodes,
Fig. 5b einen Schnitt durch die in Fig. 5a gezeigte Äusführungsform undFIG. 5b shows a section through the embodiment shown in FIG. 5a and FIG
Fig. 6 bis 8 weitere Ausführungsformen, bei denen die Elektroden zangenartig verstellbar sind.FIGS. 6 to 8 show further embodiments in which the electrodes can be adjusted like pliers.
Die Vorrichtung besteht aus einem flexiblem oder starren Schaft 1, durch den die beiden elektrischen Versorgungsleitungen 2, 3 verlaufen, die distalseitig jeweils mit den beiden Elektroden und proximalseitig mit den -metallischen Steckerpolen 4 und 5 durch lötung oder auf andere Weise verbunden sind. Zwischen den Steckerpolen befindet sich eine Buchse 6 aus isolierendem Kunststoff. Der Schaft 1 faßt eng über eine Absetzung des äußeren Steckerpols 4 und kann mit diesem durch Verkleben, Aufschrumpfen oder auf andere beliebige Weise verbunden sein. Die Steckerteile 4,5 und 6 sind über die in der Zeichnung angedeuteten Gewinde fest miteinander verschraubt und bilden einen Stecker, der in einen entsprechenden Anschluß des HF-Versorgungsgerätes bzw. in eine von diesem Gerät kommende Steckdose gesteckt werden kann. Je nach Anschlußart kann der Stecker auch abweichend von derThe device consists of a flexible or rigid shaft 1, through which the two electrical supply lines 2, 3 run, the distal side with the two electrodes and the proximal side with the metallic connector poles 4 and 5 soldered or otherwise connected. A socket 6 made of insulating plastic is located between the connector poles. The shaft 1 grips tightly over an offset of the outer connector pole 4 and can be shrunk onto it by gluing or shrinking or connected in any other way. The plug parts 4, 5 and 6 are on the thread indicated in the drawing firmly screwed together and form a plug that connects to a corresponding port of the HF supply device or in a socket coming from this device can be plugged in. Depending on the type of connection, the plug can also differ from the
- 5 -A 0-9 849/0486- 5 -A 0-9 849/0486
Darstellung nach Fig. 1 als negativer Steckeranschluß ausgebildet sein. Im übrigen können entsprechende Stecker- und Anschlußteile auch für die in den übrigen Darstellungen gezeigten "Vorrichtungen verwendet werden, so daß sich diesbezüglich eine Wiederholung der Darstellung und Beschreibung erübrigt. ■Representation according to FIG. 1 designed as a negative plug connection be. In addition, corresponding plug and connection parts can also be used for those shown in the other illustrations "Devices are used, so that there is no need to repeat the illustration and description in this regard. ■
Gemäß Fig. 1 ist das äußerste distale und aus Kunststoff hergestellte Vorrichtungsendteil 7 unter anderem zur Vermeidung von Gewebeverletzungen ballig geformt. Die beiden Elektroden 8 und 9 sind als Ringkörper ausgebildet, die durch ein Distanzstück 10 aus Isoliermaterial auf Abstand gehalten werden. Weiterhin weisen das Distanzstück und die beiden Elektroden entsprechend der Darstellung sich gegenseitig abstützende und ineinandergreifende Ansätze und Schultern auf, wodurch sie in ihrer Einbaulage relativ zur Vorrichtungslängsachse 11 fixiert werden. Das Endteil 7 ist mit einem Gewindeansatz 7a in eine Gewindebohrung des Distanzstücks 10 geschraubt, während das Distanzstück wiederum mit einem Gewindeansatz 10a in eine Gewindebohrung der Elektrode 9 geschraubt ist, die am Umfang abgesetzt ist, um das hohle distale Ende des Schaftes 1 über die Absetzung schieben zu können. Eine sichere Verbindung zwischen den Teilen 1 und 9 kann durch zusätzliche Anwendung eines Klebemittels gewährleistet werden.According to Fig. 1, the outermost distal and made of plastic Device end part 7 has a convex shape, inter alia, to avoid tissue damage. The two electrodes 8 and 9 are designed as ring bodies, which are held at a distance by a spacer 10 made of insulating material. Continue to show the spacer and the two electrodes are mutually supporting and interlocking as shown Approaches and shoulders, whereby they are fixed in their installation position relative to the device longitudinal axis 11. The end part 7 is screwed with a threaded projection 7a into a threaded hole of the spacer 10, while the spacer in turn is screwed with a threaded extension 10a in a threaded hole of the electrode 9, which is offset on the circumference to the hollow to be able to push the distal end of the shaft 1 over the deposition. A secure connection between parts 1 and 9 can can be guaranteed by the additional use of an adhesive.
Die jeweils an das zu koagulierende Körpergewebe anzulegende Bereiche der Elektroden 8 und 9 stellen sich als Zylinderflächen 8a, 9a dar, deren Achse mit der Vorrichtungsachse 11 zusammen-The areas to be applied to the body tissue to be coagulated of electrodes 8 and 9 are cylindrical surfaces 8a, 9a, the axis of which together with the device axis 11
- 6 409&49/0486 - 6 409 & 49/0486
fällt. Man erkennt, daß die von den Abmessungen des Distanzstücks 10 bestimmte Strecke zwischen den beiden Elektroden kurz ist, was zu den eingangs erwähnten Vorteilen führt. Der Durchmesser des distalen Vorrichtungskopfes und damit der Elektroden kann, wenn die Vorrichtung als Sonde in Verbindung mit einem Endoskop verwendet wird, beispielsweise zwei bis fünf mm betragen, obwohl diese Angabe keine Bindung an die erwähnten Maße beinhalten soll. Deutlich werden soll hierdurch nur, daß der wirksame Abstand zwischen den Elektrodenflächen 8a und 9a tatsächlich äußerst gering gehalten werden kann, wenn man dieses wünscht,falls. It can be seen that the dimensions of the spacer 10 certain distance between the two electrodes is short, which leads to the advantages mentioned above. The diameter of the distal device head and thus the electrodes, if the device is used as a probe in connection with a Endoscope is used, for example, two to five mm, although this information does not imply any binding to the dimensions mentioned target. This should only make it clear that the effective distance between the electrode surfaces 8a and 9a actually can be kept extremely low if one so wishes,
Bei den in den Figuren 2 und 3 gezeigten Ausführungsformen ist übereinstimmend die eine,das distale Vorrichtungsende bildende Elektrode 12 bzw. 13 als balliger Kopf bzw. im wesentlichen halbkugelförmig ausgebildet, während die aridere Elektrode '14 bzw. 15 wieder durch einen Ringkörper dargestellt wird, dessen an das ICörpergewebe anzulegender Bereich wie beim Ausführungsbeispiel nach Fig. 1 eine Zylinderfläche hat, deren Achse mit der Vorrichtungslängsachse 11 zusammenfällt. Beide Elektroden 12,14 bzw. 13,15 werden durch ein Distanzstück 16 bzw. 17 aus Isoliermaterial auf Abstand gehalten und stehen im übrigen mit dem Distanzstück über verschraubte uiü den Zeichnungen zu entnehmende Gewinde in Verbindung.In the embodiments shown in FIGS. 2 and 3, the one that forms the distal end of the device is identical Electrode 12 or 13 designed as a spherical head or essentially hemispherical, while the other electrode '14 or 15 is again represented by an annular body whose area to be placed on the body tissue has a cylindrical surface as in the exemplary embodiment according to FIG. 1, the axis of which with the device longitudinal axis 11 coincides. Both electrodes 12, 14 and 13, 15 are made by a spacer 16 and 17, respectively Isolation material kept at a distance and are otherwise screwed to the spacer and can be found in the drawings Thread in connection.
Gemäß Fig. 2 ist die ballige Elektrode 12 mit einem Gewindeansatz in die Gewindebohrung des Distanzstücks 16 eingeschraubt, während die Ringelektrode H auf eine Absetzung des DistanzstücksAccording to FIG. 2, the spherical electrode 12 has a thread attachment screwed into the threaded hole of the spacer 16, while the ring electrode H is on a deposition of the spacer
" - 7 4098A9/0486 "- 7 4098A9 / 0486
geschoben ist. Weiterhin ist das Distanzstück in ein Isolier-.teil 18 geschraubt, das mit dem Schaft 1 dadurch in Verbindung " gebracht ist, daß das distale hohle Schäftende über eine Absetzung des Isolierteils 18 geschoben und dort mit diesem mittels eines Klebers od. dgl. verbunden ist.is pushed. Furthermore, the spacer is in an insulating part 18 screwed, which is "brought into connection with the shaft 1 in that the distal hollow shaft end over a shoulder of the insulating part 18 and there is connected to it by means of an adhesive or the like.
Bei der Ausführung nach Fig. 3 ist die als Ringkörper ausgebildete Elektrode 15 am Außenumfang abgesetzt, während das distale Schaftende auf diese Absetzung geschoben und dort durch ein Klebemittel fixiert ist.In the embodiment according to FIG. 3, which is designed as an annular body Electrode 15 is deposited on the outer circumference, while the distal end of the shaft is pushed onto this deposition and there by a Adhesive is fixed.
Wie die Figuren 4a und 4b zeigen, kann eine der beiden Elektroden auch durch einen Metallstift 19 und die andere Elektrode durch einen diesen Stift isoliert umfassenden Hülsen- oder Rohrkörper 20 gebildet werden. Auch in diesem Falle ist das distale Vorrichtungsende wieder ballig ausgebildet.As FIGS. 4a and 4b show, one of the two electrodes can also be provided with a metal pin 19 and the other electrode be formed by a sleeve or tubular body 20 comprising this pin in an insulated manner. In this case, too, it is distal The end of the device is again convex.
Entsprechendes gilt für die in den Figuren 5a und 5b schematisch angedeutete Vorrichtung, bei der im übrigen beide Elektroden 21 und 22 im wesentlichen die Form von Viertelkugeln haben, die am distalen Vorrichtungsende spiegelbildlich symmetrisch zur Längsachse 11 angeordnet sind und zusammen mit einem zwischen ihnen liegenden Isolierstück 23 eine Halbkugel bilden.The same applies to the device indicated schematically in FIGS. 5a and 5b, in which, moreover, both electrodes 21 and 22 are essentially in the form of quarter-spheres which are mirror images of the device at the distal end Longitudinal axis 11 are arranged and together with an between them lying insulating piece 23 form a hemisphere.
Bei den in den Figuren β bis 8 gezeigten Ausführungsformen sitzen die Koagulationselektroden an den Enden von drahtförmigen Zangenschenkeln, deren Stellung relativ zueinander mittels einesIn the embodiments shown in Figures β to 8, the coagulation electrodes sit at the ends of wire-shaped Pliers legs whose position relative to one another by means of a
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proximalseitig zu betätigenden Handgriffs verstellbar ist.is adjustable on the proximal side to be actuated handle.
Das in Figur 6 gezeigte Instrument^ hat einen Schaft 24, in dem ein Führungsstück 25 gleitend in beiden Richtungen axial verschiebbar ist. In dieses Führungsstück 25 ist ein Halter 26 aus Isoliermaterial gesteckt. Die beiden Elektroden 27, 28 sitzen als Platten an einem Ende von elektrisch leitenden Drähten 29 und 30, die mit ihrem anderen Ende Jeweils in ein Längsloch des Halters 26 eingeschoben sind. Über die dargestellten und nicht weiter beschriebenen Verbindungen stehen die Elektroden mit dem am proximalen Instrumentenende vorgesehenen Anschlußstecker 31 in leitender Verbindung.The instrument shown in Figure 6 ^ has a shaft 24 in which a guide piece 25 slidably axially displaceable in both directions is. A holder 26 made of insulating material is inserted into this guide piece 25. The two electrodes 27, 28 are seated as plates at one end of electrically conductive wires 29 and 30, which with their other end each into a longitudinal hole of the Holder 26 are inserted. The electrodes are connected to the connections via the connections shown and not further described connector 31 provided at the proximal end of the instrument in conductive connection.
In diesem Falle bilden die Elektroden, also etwa eine Art Zange, deren Schenkel die federnden Drähte 29, 30 sind. Andererseits besteht auch die Möglichkeit, die dargestellten Ereisplatten aus Isoliermaterial anzufertigen, so daß die Elektroden durch die Enden der Drähte 29 und 30 direkt gebildet werden.In this case, the electrodes, i.e. a kind of forceps, form the legs of which are the resilient wires 29, 30. On the other hand, there is also the possibility of using the rice plates shown to be made of insulating material so that the electrodes are formed by the ends of the wires 29 and 30 directly.
Der Stecker 31 sitzt in einem Aufnahmeteil 32, das über eine Betätigungsstange 33 mit dem Führungsstück 25 verbunden ist.
Eine Handhabe in Form eines gebogenen Handgriffs 34- aus federndem
Material ist bei 34a mit der Stange 33 und bei 34b mit dem
Schaft 24 starr verbunden. Im übrigen läuft die Betätigungsstange
33 im Bereich der Handgriffbefestigungsstelle 34b frei durch den
dort befindlichen Griffschenkel.
. . . - 9 -The plug 31 is seated in a receiving part 32 which is connected to the guide piece 25 via an actuating rod 33. A handle in the form of a curved handle 34 made of resilient material is rigidly connected to the rod 33 at 34a and to the shaft 24 at 34b. In addition, the actuating rod 33 runs freely in the area of the handle fastening point 34b through the handle leg located there.
. . . - 9 -
409849/0-4 86409849 / 0-4 86
Wenn die Schenkel des Handgriffs 34 in Richtung aufeinander zu bewegt werden, gleitet das Führungsstück 25 gemäß der Darstellung im Schaft 24 nach links, so daß die unter radial nach außen gerichteter Vorspannkraft stehenden Drahtschenkel 29t 30 aus dem distalen Schaftende austreten und sich unter Anlage gegen den aus Isoliermaterial bestehenden Zylinderteil 24a öffnen, wodurch der Abstand der Elektroden zueinander vergrößert wird. Es ist klar, daß der Elektrodenabstand sich nach der Jeweiligen Stellung der Schenkel des Handgriffs 34 richtet. Wenn also die Handgriffschenkel gelöst bzw. gespreizt werden, gleitet das Führungstück 25 im Schaft 24 wieder nach rechts, so daß die Elektroden auf einen geringeren Abstand zueinander gebracht werden.When the legs of the handle 34 towards each other are moved, the guide piece 25 slides as shown in the shaft 24 to the left, so that the bottom radially outward directed pretensioning force standing wire legs 29t 30 emerge from the distal end of the shaft and come into contact with each other open the cylinder part 24a made of insulating material, whereby the distance between the electrodes is increased. It it is clear that the electrode spacing depends on the respective position of the legs of the handle 34. So if the Handle legs are released or spread, the guide piece 25 slides in the shaft 24 to the right again, so that the Electrodes are brought closer to one another.
Beim Ausführungsbeispiel nach Figur 7 kann die obere Metallelektrode 35 mit einem Ansatz in eine gegenüberliegende Ausnehmung der unteren Metallelektrode 36 greifen. Entsprechendes gilt für die in Figur 8 gezeigte Möglichkeit, bei der die obere Elektrode 37 in eine V-förmige Ausnehmung der unteren Elektrode 38 fassen kann. Auch in diesem Falle erfolgt die Elektrodenbetätigung bzw.-verstellung so, wie es in Verbindung mit Figur 6 im einzelnen beschrieben wurde.In the exemplary embodiment according to FIG. 7, the upper metal electrode 35 with one approach in an opposite recess the lower metal electrode 36 grip. The same applies to the possibility shown in Figure 8, in which the upper Electrode 37 can reach into a V-shaped recess of the lower electrode 38. In this case, too, the electrodes are actuated or adjustment as described in detail in connection with FIG.
Abschließend sei noch darauf hingewiesen, daß die sowohl zur Behandlung von Menschen als auch von Tieren geeignete Vorrichtung einerseits als Sonde verwendet werden kann, und zwar in Kombination mit Endoskopen. Das Endoskop weist zu diesem ZweckFinally, it should be noted that both the Treatment of humans and animals suitable device on the one hand can be used as a probe, namely in Combination with endoscopes. The endoscope points to this purpose
- 10 -- 10 -
409849/0486409849/0486
einen Sondenkanal auf, durch den das Gerät vom proximalen Ende aus eingeführt 'und durch den Endoskopschaft hindurch an den Behandlungsort geführt werden kann. Andererseits kann man die Vorrichtung natürlich auch so ausbilden, daß sie unabhängig von Endoskopen verwendbar ist, indem sie mit dem distalen Ende direkt an den Behandlungsort gebracht wird. In diesem Falle wird man den Vorrichtungsschaft relativ starr ausführen können. Dieser Weg schließt natürlich nicht die Möglichkeit aus, daß man den Koagulationsvorgang mit einem Endoskop beobachten kann, das durch einen zweiten Einstich in die Körperhöhle eingeführt wird.a probe channel through which the device from the proximal end out 'and through the endoscope shaft to the treatment site can be performed. On the other hand, the device can of course also be designed so that it is independent can be used by endoscopes by bringing the distal end directly to the treatment site. In this case it will you can make the device shaft relatively rigid. Of course, this path does not exclude the possibility that one can observe the coagulation process with an endoscope, which is inserted through a second puncture into the body cavity.
Weiterhin sei schließlich noch erwähnt, daß neben den dargestellten und beschriebenen Verbindungen in Form von Gewinden und dergleichen auch beliebige andere Verbindungsarten in Betracht zu ziehen sind. Außerdem kann in Erwägung gezogen werden, zwischen die miteinander zu verschraubenden Gewinde einen Kitt, wie beispielsweise Mennige od. dgl., zu bringen, um eine absolut feste und sichere Verbindung zu gewährleisten.Finally, it should also be mentioned that in addition to those shown and connections described in the form of threads and the like, any other types of connection are also considered are to be drawn. In addition, it can be considered to put a putty between the threads to be screwed together, such as red lead or the like. To ensure an absolutely firm and secure connection.
409849/0 486409849/0 486
Claims (9)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732324658 DE2324658B2 (en) | 1973-05-16 | 1973-05-16 | PROBE FOR COAGULATING BODY TISSUE |
GB1311576A GB1461810A (en) | 1973-05-16 | 1974-05-13 | Device for coagulating areas of body tissue by means of high frequency current |
GB2114474A GB1461809A (en) | 1973-05-16 | 1974-05-13 | Coagulating devices |
US470010A US3920021A (en) | 1973-05-16 | 1974-05-15 | Coagulating devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19732324658 DE2324658B2 (en) | 1973-05-16 | 1973-05-16 | PROBE FOR COAGULATING BODY TISSUE |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2324658A1 true DE2324658A1 (en) | 1974-12-05 |
DE2324658B2 DE2324658B2 (en) | 1977-06-30 |
Family
ID=5881058
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19732324658 Withdrawn DE2324658B2 (en) | 1973-05-16 | 1973-05-16 | PROBE FOR COAGULATING BODY TISSUE |
Country Status (3)
Country | Link |
---|---|
US (1) | US3920021A (en) |
DE (1) | DE2324658B2 (en) |
GB (2) | GB1461809A (en) |
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- 1973-05-16 DE DE19732324658 patent/DE2324658B2/en not_active Withdrawn
-
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- 1974-05-13 GB GB2114474A patent/GB1461809A/en not_active Expired
- 1974-05-13 GB GB1311576A patent/GB1461810A/en not_active Expired
- 1974-05-15 US US470010A patent/US3920021A/en not_active Expired - Lifetime
Cited By (9)
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DE2521719A1 (en) * | 1975-05-15 | 1976-11-25 | Delma Elektro Med App | ELECTROSURGICAL DEVICE |
US4060087A (en) * | 1975-06-11 | 1977-11-29 | Richard Wolf Gmbh | Single or double-shank cutting loop device for resectoscopes |
US4572214A (en) * | 1980-04-11 | 1986-02-25 | Ursus Konsult Ab | Electrode device |
FR2481921A1 (en) * | 1980-05-08 | 1981-11-13 | Biotrol Sa Lab | BIPOLAR PROBE FOR ELECTROCOAGULATION |
EP0040138A1 (en) * | 1980-05-08 | 1981-11-18 | Laboratoires Biotrol S.A. | Bipolar probe for electrocoagulation |
FR2603184A1 (en) * | 1986-09-02 | 1988-03-04 | Wolf Gmbh Richard | COAGULATION FORCEPS |
US4985030A (en) * | 1989-05-27 | 1991-01-15 | Richard Wolf Gmbh | Bipolar coagulation instrument |
EP0538994A1 (en) * | 1991-10-21 | 1993-04-28 | Everest Medical Corporation | Bipolar laparoscopic instrument with replaceable electrode tip assembly |
US5250047A (en) * | 1991-10-21 | 1993-10-05 | Everest Medical Corporation | Bipolar laparoscopic instrument with replaceable electrode tip assembly |
Also Published As
Publication number | Publication date |
---|---|
GB1461810A (en) | 1977-01-19 |
DE2324658B2 (en) | 1977-06-30 |
US3920021A (en) | 1975-11-18 |
GB1461809A (en) | 1977-01-19 |
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