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DE7418576U - Catheter with a loop that can be put under tension - Google Patents

Catheter with a loop that can be put under tension

Info

Publication number
DE7418576U
DE7418576UDE19747418576DE7418576UDE7418576UDE 7418576 UDE7418576 UDE 7418576UDE 19747418576DE19747418576DE 19747418576DE 7418576 UDE7418576 UDE 7418576UDE 7418576 UDE7418576 UDE 7418576U
Authority
DE
Germany
Prior art keywords
loop
catheter
isolated
conductors
catheter according
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.)
Expired
Application number
DE19747418576
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Richard Wolf GmbH
Original Assignee
Richard Wolf GmbH
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 Richard Wolf GmbHfiledCriticalRichard Wolf GmbH
Priority to DE19747418576priorityCriticalpatent/DE7418576U/en
Publication of DE7418576UpublicationCriticalpatent/DE7418576U/en
Priority to GB2165175Aprioritypatent/GB1490585A/en
Priority to FR7516856Aprioritypatent/FR2275226A1/en
Expiredlegal-statusCriticalCurrent

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Abstract

1490585 Cauteries; surgical cutting, devices RICHARD WOLF GmbH 20 May 1975 [30 May 1974] 21651/75 Heading A5R A device for removing, dividing or coagulating tissue, comprises two electrical conductors 2, 3 extending through an insulating sheath 4 and connectible proximally to a source of H.F. current, said conductors continuing distally to form electrode members having mutually spaced, insulation-free parts 8, and the distal ends of the electrode members being held together at a distance from one another in an insulating member 7. Sheath 4 may be flexible.

Description

Translated fromGerman
Patentanwilto,-Patent attorney, -Dr. HuEo Wilcken . . , 2 9. Μβί J974 )Dr. HuE o Wilcken. . , 2 9. Μβί J974)

Dipl.-lng. Thomas Wilcken '::.... _yDipl.-lng. Thomas Wilcken ':: .... _y

Dipl.-Chem. Dr. Wolfgang Läufer . . ' .., ' :Dipl.-Chem. Dr. Wolfgang runner. . '..,':

24 Lübeck, Breite Siiaüo 55-54.24 Lübeck, width Siiaüo 55-54.

Anmelder: Richardnfolf GmbH, 7134 Knittlingen, Pforzheimer- Str.Applicant: Richardnfolf GmbH, 7134 Knittlingen, Pforzheimer- Str.

Katheter mit an eine Spannung legbarer SchlingeCatheter with a loop that can be put under tension

Die Neuerung bezieht sich auf einen Katheter mit zum Abtragen, Durchtrennen oder Koagulieren von Geweben dienender,an eine Spannung legbarer Schlinge.The innovation relates to a catheter with used for ablating, cutting or coagulating tissue,to a tension attachable loop.

Zum Abtragen von Geweben,ζ.B.Polypen, Riesenfalten oderErhebungen im Magen unter Verwendung eines flexiblen oder teilflexiblen Gastroskops oder zum Durchtrennen oderKoagulieren von Geweben unter Benutzung entsprechender Endoskope werden mit Hochfrequenzstrom gespeiste Schlingen verwendet,die mit einem durch einen Katheter geführten Leiter an den einen Pol einer Stromquelle angeschlossen werden, während die Operationsstelle entweder über den Körper des Patienten und eine an denKörper gelegte Metallplatte oder der Endoskopschaft als Zuleiter zum anderen Pol der Sbromquelle dient. Bei diesenbekannten Ausführungen können unkontrollierbare Stromübergänge im Körper des Patienten auftreten, die unter Umständensehr gefährlich sind.For removing tissues, e.g. polyps, giant folds orElevations in the stomach using a flexible or partially flexible gastroscope or for severing orTissue coagulation using appropriate endoscopes, loops fed with high frequency current are used,which are connected to one pole of a power source with a conductor passed through a catheter, while the surgical site is either over the patient's body and one to theMetal plate placed on the body or the endoscope shaft serves as a supply line to the other pole of the Sbromquelle. With theseknown designs, uncontrollable current transitions can occur in the patient's body, which under certain circumstancesare very dangerous.

Die Aufgabe der Neuerung besteht darin, solche unkontrollierbaren Stromübergänge auszuschalten, und dies wird nach derThe task of the innovation is to switch off such uncontrollable current transitions, and this will be done after the

Neuerung bei dem eingangs erwähnten Katheter dadurch gelöst, daß die Schlinge in zwei Leiter übergeht, die isoliertdurch den Katheter zum proximalen Katheterende geführt sind.Innovation in the catheter mentioned at the outset is achieved in that the loop merges into two conductors that insulateare passed through the catheter to the proximal end of the catheter.

Bei dieser Lösung der Neuerung kann die z.B. aus Federstahldraht bestehende Schlinge mit Schwachstrom z.B. bis zu6 Volt so beheizt werden, daß sie eine maximale Temperatur von 170° C annimmt, wobei das Schiingenmaterial mindestensam distalen Abschnitt der Schlinge auch so gewählt werden kann, daß sich der spezifische Widerstand bei Temperaturerhöhungnach einer linearen Funktion vergrößert, was zur Temperaturregelung benutzt werden kann. Als Material ist dabei z.B- eineNickel-Eisenlegierung mit.etwa 70 % Nickel und 30 % Eisen verwendbar.With this solution of the innovation, the loop made of spring steel wire, for example, can be used with a low current of up to6 volts are heated so that it assumes a maximum temperature of 170 ° C, the loop material at leastat the distal section of the loop can also be selected so that the specific resistance increases with an increase in temperatureenlarged according to a linear function, which can be used for temperature control. The material here is, for example, aNickel-iron alloy with about 70% nickel and 30% iron can be used.

Anstelle von Schwachstrom ist auch die Verwendung eines bipolaren Hochfrequenzstromes möglich, wobei dann das distaleEnde der Schlinge durch Trennung unterbrochen ist und die Enden isoliert in einem Isolierstück zusammengefaßt sind.Instead of weak current, it is also possible to use a bipolar high-frequency current, the distal current then being usedThe end of the loop is interrupted by separation and the ends are isolated together in an insulating piece.

Durch die Neuerung werden unkontrollierbare Stromübergänge im Körper des Patienten völlig ausgeschaltet, da beide.Leiter der Schlinge zu den beiden Polen der Stromquelle isoliert durch den Katheter geführt sind.The innovation completely eliminates uncontrollable current transitions in the patient's body, since both.Head of the loop to the two poles of the power source are isolated through the catheter.

Die Neuerung wird anhand der Zeichnung kurz erläutert. Es zeigen:The innovation is briefly explained using the drawing. Show it:

Figur 1 eine Seitenansicht eines Katheters mit Abtragschlinge und einen teilweisen Längsschnittdurch das distale Ende des Katheters,FIG. 1 shows a side view of a catheter with an ablation loop and a partial longitudinal sectionthrough the distal end of the catheter,

Figur 2 eine Seitenansicht eines distalen Katheters mit abgeänderter Abtragschlinge, und Schnittdurch das distale Schlingenende.FIG. 2 shows a side view of a distal catheter with a modified ablation loop, and a sectionthrough the distal end of the loop.

Nach dem Beispiel Figur 1 geht die freie, z.B. aus Federstahl-· draht bestehende Schlinge 1 zum Abtragen, Durchtrennen oder Koagulierenvon Geweben in Körperhöhlen in zwei Leiter 2 und 3 über, die isoliert durch den vorteilhaft flexiblen Katheter 4 zum proximalenEnde des Katheters verlaufen und proximal in Stecker 5, 6 enden, mit denen die beiden Leiter2,3 der Schlinge 1 an eineStromquelle anschließbar sind. Als ,Stromquelle wird in diesem Fall vorteilhaft eine Schwachstromquelle verwendet, die z.B. eineSpannung bis zu 6 Volt liefert und in der Lage ist, die Schlinge 1 maximal bis auf eine Temperatur von 170° C aufzuheizen.According to the example in FIG. 1, the free loop 1, for example made of spring steel wire, for removing, cutting or coagulating tissues in body cavities merges into two conductors 2 and 3, which run isolated through the advantageously flexible catheter 4 to the proximal end of the catheter and end proximally in plugs 5, 6 with which the two conductors2, 3 of the loop 1 can be connected to a power source. In this case, the power source used is advantageously a low-power source which, for example, supplies a voltage of up to 6 volts and is capable of heating the loop 1 to a maximum temperature of 170.degree.

Der Katheter 4 mit der Schlinge 1 wird z.B. mittels eines flexiblen oder teilfelxiblen Gastroskops oder eines sonstigenEndoskops an die abzutragenden, zu durchtrennenden oder zu koagulierenden Gewebe·, wie Polypen, Riesenfalten oder ErhebungenThe catheter 4 with the loop 1 is e.g.Endoscope to the tissue to be ablated, severed or coagulated, such as polyps, giant folds or bumps

-A--A-

herangeführt und dann an die Stromquelle angeschlossen, so daß uas Abtragen, Durchtrennen oder Koagulieren von Geweben ohneGefahr für den Patienten durchführbar ist, da durch den isolierten Verlauf beider Leiter durch den Katheter keine unkontrollierbarenStröme im Körper des Patienten auftreten können.brought up and then connected to the power source, so that uas removal, cutting or coagulation of tissues withoutRisk to the patient is feasible, since the insulated path of both conductors through the catheter means that there are no uncontrollable conductorsCurrents can occur in the patient's body.

Es ist auch möglich, die Schlinge gemäß Figur 2 mit bipolarem Hochfrequenzstrom zu beschicken, wobei die SchlingeSjedocham distalen Ende durch Trennung unterteilt ist. Die Schlingenenden sind dabei gegeneinander isoliert in einem Isolierkörperzusammengefaßt. Sonst verlaufen die Leiter 2, 3 zur Schlingeβentsprechend Figur 1 wieder isoliert durch den Katheter 4 zum proximalenEnde und können hier an eine Hochfrequenzstromquelle angeschlossen werden. Auch in diesem Fall können kei.ie Gefahren fürden Patienten auftreten.It is also possible to charge the loop according to FIG. 2 with bipolar high-frequency current, the loopS, however, being subdivided at the distal end. The loop ends are isolated from one another and combined in an insulating body. Otherwise the conductors 2, 3 run to the loopβ in accordance with FIG. 1, again isolated through the catheter 4 to the proximal end and can be connected here to a high-frequency power source. In this case, too, there are no dangers for the patient.

Claims (5)

Translated fromGerman
P.itenlnnwälle Dr. Huro Wiloken 29, Mal Iriß. Thomas Wilcken Difjl.-Chom. Dr. Wolfgang Laufer ,", I : "*) 24 Lüback, Broiie Slralie 6S-&4 .!!"''.,.' Anmelder: Richard Wolf £:ubH,'' 71O4' Knittlingen, Pforzheimer Str. AnsprücheP.itenlnnwwall Dr. Huro Wiloken 29, Mal Iriß. Thomas Wilcken Difjl.-Chom. Dr. Wolfgang Laufer, ", I:" *) 24 Lüback, Broiie Slralie 6S- & 4. !! "''.,. ' Applicant: Richard Wolf £: ubH, '' 71O4 'Knittlingen, Pforzheimer Str. Claims1. Katheter mit zum Abtragen, Durchtrennen oder Koagulierenvon Geweben dienender/ an eine Spannung legbarer Schlinge, dadurch gekennzeichnet, daß die Schlinge (1,S)in zwei Leiter (2, 3)übergeht, die isoliert durch den Katheter (4) zum proximalen Katheterende geführt sind.1. Catheter with for the ablation, severing or coagulation of tissues serving / to a tension placeable loop, characterized in that the loop (1,S ) merges into two conductors (2, 3) isolated by the catheter (4) for proximal end of the catheter are guided.2. Katheter nach Anspruch 1, dadurch gekennzeichnet, daß die Schlinge (g) bei Beschickung mit bipolarem Hochfrequenzstromam distalen Ende unterbrochen ist und die Enden gegeneinander isoliert in einem Isolierstück (7) zusammengefaßtsind.2. Catheter according to claim 1, characterized in that the loop (g) when charged with bipolar high-frequency currentis interrupted at the distal end and the ends are isolated from one another and combined in an insulating piece (7)are.3. Katheter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schlinge (1, δ) und die einen flexiblen Katheter (4)durchlaufenden, isolierten Leiter (2, 3) aus einem Federstahldraht hergestellt sind.3. Catheter according to claim 1 or 2, characterized in that the loop (1, δ) and the one flexible catheter (4)continuous, insulated conductor (2, 3) are made from a spring steel wire.4. Katheter nach Anspruch 1 oder 2, dadurch gekennzeichnet,4. Catheter according to claim 1 or 2, characterized in thatdaß mindestens der distale Abschnitt der Schlinge (1,£) aus einemMaterial hergestellt ist, welches seinen spezifischen Widerstandthat at least the distal portion of the loop (1, £) from aMaterial is made, which is its specific resistancebei Temperaturerhöhung nach einer linearen Funktion vergrößert.when the temperature rises, it is increased according to a linear function.5. Katheter nach Anspruch 4, dadurch gekennzeichnet, daß dasSchiingenmaterial aus einer Nickel-Eisenlegierung mit70 % Nickel und 30 % Eisengehalt besteht.5. Catheter according to claim 4, characterized in that theLoop material made from a nickel-iron alloy with70% nickel and 30% iron content.
DE197474185761974-05-301974-05-30 Catheter with a loop that can be put under tensionExpiredDE7418576U (en)

Priority Applications (3)

Application NumberPriority DateFiling DateTitle
DE19747418576DE7418576U (en)1974-05-301974-05-30 Catheter with a loop that can be put under tension
GB2165175AGB1490585A (en)1974-05-301975-05-20Devices for removing dividing or coagulating tissues
FR7516856AFR2275226A1 (en)1974-05-301975-05-29 CATHETER INCLUDING A LOOP THAT CAN BE ELECTRICALLY POWERED

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
DE19747418576DE7418576U (en)1974-05-301974-05-30 Catheter with a loop that can be put under tension

Publications (1)

Publication NumberPublication Date
DE7418576Utrue DE7418576U (en)1974-09-12

Family

ID=6645195

Family Applications (1)

Application NumberTitlePriority DateFiling Date
DE19747418576ExpiredDE7418576U (en)1974-05-301974-05-30 Catheter with a loop that can be put under tension

Country Status (3)

CountryLink
DE (1)DE7418576U (en)
FR (1)FR2275226A1 (en)
GB (1)GB1490585A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
DE3220940A1 (en)*1982-06-031983-12-08Harald 7200 Tuttlingen MaslankaDiathermy instrument
DE102009012431A1 (en)2009-03-102010-09-23Farin, Günter, Dipl.-Ing. Method and device for operating an HF surgical device
US9668801B2 (en)2009-03-102017-06-06Karl Storz Gmbh & Co. KgMethod and device for operating an RF surgical assembly
DE102009036158A1 (en)2009-07-282011-02-03Farin, Günter, Dipl.-Ing. Monopolar polypectomy loops

Also Published As

Publication numberPublication date
FR2275226B3 (en)1978-12-29
FR2275226A1 (en)1976-01-16
GB1490585A (en)1977-11-02

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