DieErfindung betrifft ein chirurgisches Instrument mit einem proximalenund einem distalen Ende, mit einem ersten Werkzeug und einem zweiten,relativ zum ersten bewegbaren Werkzeug am distalen Ende des Instruments,mit einem dem ersten Werkzeug zugeordneten ersten Fluidkanal, dereinen Fluideinlaß anseinem proximalen Ende aufweist und eine Fluidströmung indistaler Richtung ermöglicht, undmit einem zweiten Fluidkanal, der eine Fluidströmung in proximaler Richtungermöglichtund einen Fluidauslaß anseinem proximalen Ende aufweist, wobei das erste Werkzeug den zweitenFluidkanal umfaßt.TheThe invention relates to a surgical instrument with a proximaland a distal end, with a first tool and a second,relative to the first movable tool at the distal end of the instrument,with a first fluid channel associated with the first tool, thea fluid inlethas its proximal end and a fluid flow inallows distal direction, andwith a second fluid channel, which is a fluid flow in the proximal directionallowsand a fluid outletits proximal end, wherein the first tool the secondFluid channel includes.
ChirurgischeInstrumente der eingangs beschriebenen Art sind beispielsweise ausder
ZumVerödenvon Weichgewebe wird üblicherweise über zweiElektroden ein Hochfrequenzstrom angelegt. Dieser kann direkt über dasInstrument oder überseparate Elektroden fließen.In beiden Fällenbefindet sich das Instru ment in Kontakt mit einem solchen Koagulationsbereich,mit der Folge, daß diebeiden Werkzeuge sehr heiß werdenkönnen.To thebecome desertedof soft tissue is usually over twoElectrodes applied a high frequency current. This can be done directly over theInstrument or overseparate electrodes flow.In both casesIf the instrument is in contact with such a coagulation area,with the result that theboth tools get very hotcan.
Mitden beiden bei der Bipolarschere gemäß der
Ausder
Daherist es Aufgabe der vorliegenden Erfindung, ein Instrument der eingangsbeschriebenen Art so zu verbessern, daß die Werkzeuge auf einfache Weiseund zuverlässiggekühltwerden können.ThereforeIt is an object of the present invention, an instrument of the beginningdescribed type to improve the tools in a simple mannerand reliablechilledcan be.
DieseAufgabe wird bei einem chirurgischen Instrument der eingangs beschriebenenArt erfindungsgemäß dadurchgelöst,daß dererste Fluidkanal und der zweite Fluidkanal einen Kühlkanalbilden und daß eindistaler Endbereich des ersten Fluidkanals mit einem distalen Endbereichdes zweiten Fluidkanals in direkter Fluidverbindung steht, indemdie beiden distalen Enden der Fluidkanäle miteinander verbunden werden,so daß einKühlkreislaufim Kühlkanalmittels eines durch den ersten und zweiten Fluidkanal strömenden Fluidsentsteht.TheseTask is in a surgical instrument of the type described aboveType according to the invention therebysolved,that thefirst fluid channel and the second fluid channel a cooling channelform and that onedistal end portion of the first fluid channel having a distal end portionthe second fluid channel is in direct fluid communication bythe two distal ends of the fluid channels are interconnected,so that oneCooling circuitin the cooling channelby means of a fluid flowing through the first and second fluid channelsarises.
Durchdie direkte Fluidverbindung der beiden distalen Endbereiche derbeiden Fluidkanälekann kein Fluid mehr in den Operationsbereich gelangen. Am einfachstenwird die direkte Fluidverbindung hergestellt, indem die beiden distalenEnden der Fluidkanälemiteinander verbunden werden. Durch die Anordnung der beiden Fluidkanäle an einemWerkzeug entsteht somit ein geschlossener Kühlkreislauf. Verunreinigungenkönnennicht in diesen eindringen und den Kühlkanal verstopfen. Damit kanndas eine Werkzeug auf sichere Weise gekühlt werden. In gleicher Weisekönnteauch das zweite Werkzeug mit einem Kühlkanal versehen werden. Fernerwären auch diebeiden Fluidkanäleim Bereich der Werkzeuge verbindende Querkanäle zur weiteren Verbesserung derKühlungdenkbar.Bythe direct fluid connection of the two distal end portions of thetwo fluid channelsno fluid can enter the operating area anymore. The easiestThe direct fluid connection is made by placing the two distal onesEnds of the fluid channelsbe connected to each other. By the arrangement of the two fluid channels on oneTool thus creates a closed cooling circuit. impuritiescando not penetrate into these and clog the cooling channel. So that cana tool can be safely cooled. In the same waycouldAlso, the second tool to be provided with a cooling channel. Furtherwould be thetwo fluid channelsin the field of tools connecting cross channels to further improve thecoolingconceivable.
Vorzugsweisesind der Fluideinlaß und/oder derFluidauslaß ineinem werkzeugfreien Bereich des Instruments angeordnet. Über denFluideinlaß und denFluidauslaß istder Kühlkanalmit einer Fluidzufuhr bzw. -absaugung verbindbar. Die Anordnungder beiden Anschlüssein einem werkzeugfreien Bereich des Instruments hat beispielsweisebei endoskopischen Instrumenten den Vorteil, daß die Anschlüsse am Instrumentso angeordnet werden können,daß siesich bei einem chirurgischen Eingriff außerhalb des menschlichen Körpers befindenkönnenund den Operationsbereich nicht unnötig einschränken.Preferablyare the fluid inlet and / or theFluid outlet inarranged a tool-free area of the instrument. On theFluid inlet and theFluid outlet isthe cooling channelconnectable with a fluid supply or -absaugung. The orderthe two connectionsin a tool-free area of the instrument has, for examplein endoscopic instruments the advantage that the connections on the instrumentcan be arrangedthat sheto be outside the human body during a surgical procedurecanand do not unnecessarily restrict the operation area.
Beieiner bevorzugten Ausführungsformder Erfindung kann vorgesehen sein, daß sich der erste und der zweiteFluidkanal im wesentlichen vom proximalen zum distalen Ende desInstruments erstrecken und daß derFluideinlaß undder Fluidauslaß am proximalenEnde des Instruments angeordnet sind. Auf diese Weise lassen sichbesonders schlanke Instrumente ausbilden, die bevorzugt in der EndoskopieAnwendung finden können.Ferner wird die Handhabung des Instruments erleichtert, da keinestörendenAnschlüssefür einzu- bzw. abzuführendesFluid in einem Griff- oder Werkzeugbereich des Instruments angeordnetsein müssen.In a preferred embodiment of the invention, it may be provided that the first and second fluid channels extend substantially from the proximal to the distal end of the instrument and that the fluid inlet and outlet are located at the proximal end of the instrument. In this way, particularly slim instruments can be formed which can preferably be used in endoscopy. Furthermore, the handling of the instrument is facilitated since no interfering connections for a fluid to be supplied or removed have to be arranged in a handle or tool area of the instrument.
Günstig istes, wenn ein Abstand zwischen dem ersten und dem zweiten Fluidkanalim Bereich des ersten Werkzeugs am größten ist. Durch den großen Abstandder beiden Fluidkanälekann das erste Werkzeug optimal gekühlt und Wärme von diesem großflächig abgeführt werden.Cheap isit, when a distance between the first and the second fluid channelis greatest in the area of the first tool. By the big distancethe two fluid channelsthe first tool can be cooled optimally and heat can be dissipated from this over a large area.
Grundsätzlich wäre es denkbar,das chirurgische Instrument auch als Rohrschaftinstrument auszugestalten.Vorteilhaft ist es jedoch, wenn das chirurgische Instrument zweirelativ zueinander verschwenkbar aneinander gelagerte Branchen umfaßt und wennjedes der beiden distalen Enden der Branchen eines der beiden Werkzeugeumfaßt.So kann das Instrument beispielsweise in Form einer herkömmlichenSchere ausgestaltet sein, wobei ein oder beide Fluidkanäle in oderan einer der beiden Branchen angeordnet sind.In principle, it would be conceivableto design the surgical instrument also as a tubular shaft instrument.However, it is advantageous if the surgical instrument twoincludes relative to each other pivotally mounted to each other industries and ifeach of the two distal ends of the branches of one of the two toolsincludes.For example, the instrument may be in the form of a conventional oneScissors be configured with one or both fluid channels in orarranged on one of the two branches.
Umdie Ausbildung der beiden Fluidkanäle zu erleichtern, kann esgünstigsein, wenn das erste Werkzeug mehrteilig ausgebildet ist und mindestens einerstes und ein zweites Werkzeugelement umfaßt. So können ein oder beide Fluidkanäle teilweisein einem der beiden Werkzeugelemente gebildet werden. Ferner istes möglich,unterschiedliche Materialien zu verwenden, beispielsweise ein abriebbeständiges Metallfür einschneidenförmigesWerkzeug und einen Kunststoff füreinen Fluidkanal. Auch sind keramische Werkzeugelemente denkbar.AroundIt can facilitate the formation of the two fluid channelsCheapbe when the first tool is designed in several parts and at least onecomprises first and a second tool element. So one or both fluid channels can partiallybe formed in one of the two tool elements. Further isit is possibleto use different materials, such as an abrasion resistant metalfor acut shapedTool and a plastic fora fluid channel. Also, ceramic tool elements are conceivable.
Gemäß einerbevorzugten Ausführungsform derErfindung umfaßtdas erste Werkzeugelement den ersten und/oder den zweiten Fluidkanalmindestens teilweise. Es ist demnach möglich, den Fluidkanal bzw.die beiden Fluidkanäleauch einteilig auszugestalten, beispielsweise als Rohr.According to onepreferred embodiment ofInventionthe first tool element the first and / or the second fluid channelat least partially. It is therefore possible, the fluid channel orthe two fluid channelsalso to design in one piece, for example as a pipe.
Vorteilhaftkann es aber auch sein, wenn das erste und das zweite Werkzeug elementden ersten und/oder den zweiten Fluidkanal mindestens teilweiseumfassen. Beide Werkzeugelemente können bei der Bildung der beidenFluidkanälezusammenwirken, beispielsweise indem jedes Element mit einer halbschaligenAusnehmung versehen ist.Advantageousbut it can also be when the first and the second tool elementthe first and / or the second fluid channel at least partiallyinclude. Both tool elements can help in the formation of the twofluid channelsinteract by, for example, adding each element to a half-shelled oneRecess is provided.
Diebeiden Fluidkanälekönntenvollständig innerhalbeines der beiden Werzeugelemente angeordnet sein. Günstig istes jedoch, wenn das erste und das zweite Werkzeugelement aneinanderangrenzen und wenn der erste und/oder der zweite Fluidkanal entlangeiner Grenzflächezwischen dem ersten und dem zweiten Werkzeugelement verlaufen. Dadurchwird die Herstellung der Werkzeugelemente wesentlich vereinfacht.Teile der beiden Fluidkanäle können jeweilsin die beiden Werkzeugelemente eingearbeitet werden, die dann aneinanderherangeführtwerden und gemeinsam die beiden Fluidkanäle bilden. Auch wäre es denkbar,eine rohrförmigeLeitung entlang der Grenzflächezwischen beiden Werkzeugelementen anzuordnen.Thetwo fluid channelscouldcompletely withinbe arranged one of the two Werzeugelemente. Cheap isHowever, if the first and the second tool element to each otheradjacent and when the first and / or the second fluid channel alongan interfacerun between the first and the second tool element. Therebythe production of the tool elements is considerably simplified.Parts of the two fluid channels can eachbe incorporated into the two tool elements, which then togetherbroughtbe and together form the two fluid channels. It would also be conceivablea tubularLead along the interfaceto arrange between two tool elements.
Besonderseinfach wird der Aufbau, wenn das erste und/oder das zweite Werkzeugelementjeweils mit einer Ausnehmung versehen sind zum gemeinsamen Ausbildendes ersten und/oder zweiten Fluidkanals. Beide Werkzeugelementekönnengetrennt voneinander zur Ausbildung eines Fluidkanals vorbereitetwerden. Weitere Teile sind nicht notwendig.Especiallythe structure becomes simple when the first and / or the second tool elementare each provided with a recess for common educationthe first and / or second fluid channel. Both tool elementscanprepared separately from each other to form a fluid channelbecome. Other parts are not necessary.
Besondersvorteilhaft ist es, wenn das erste Werkzeugelement aus einem Isolator,insbesondere einem keramischen Material hergestellt ist. Damit läßt sichbeispielsweise eine Isolierung zwischen dem ersten und zweiten Werkzeugherstellen, wenn das aus einem Isolator hergestellte erste Werkzeugelementan das andere der beiden Werkzeuge angrenzt. Auch kann damit einelektrischer Leiter im Bereich des ersten Werkzeugs vollständig isoliertwerden.EspeciallyIt is advantageous if the first tool element consists of an insulator,in particular a ceramic material is produced. This can beFor example, insulation between the first and second toolswhen the first tool element made of an insulatoradjacent to the other of the two tools. Also can do with itelectrical conductor completely isolated in the area of the first toolbecome.
Vorzugsweiseist das zweite Werkzeugelement aus einem Metall, insbesondere auseinem hochleitfähigenMetall hergestellt. Insbesondere bei mit Strom beaufschlagbarenInstrumenten ist ein zuverlässigerelektrischer Leiter von Vorteil, um insbesondere die Erwärmung desInstruments gering zu halten.Preferablyis the second tool element made of a metal, in particular froma highly conductiveMade of metal. Especially when acted upon by electricityInstruments is a reliable oneelectrical conductor of advantage, in particular the heating of theInstruments to keep low.
Für eine dauerhafteStabilitätdes Instruments ist es vorteilhaft, wenn das erste und das zweiteWerkzeugelement miteinander verbunden sind, insbesondere verklebtoder verlötet.Derartige Verbindungen sind auch zwischen unterschiedlichen Materialienmöglich.Gegenübereiner Verbindung durch Umhüllungmittels eines weiteren Werkzeugelements kann beim Kleben oder Verlöten daraufvollständigverzichtet werden.For a lastingstabilityof the instrument, it is advantageous if the first and the secondTool element are connected together, in particular gluedor soldered.Such compounds are also between different materialspossible.Across froma connection by claddingby means of a further tool element can when gluing or soldering itCompletelybe waived.
Besondersgünstigist es, wenn das erste und/oder das zweite Werkzeugelement mindestens teilweisemit einer Deckschicht bedeckt sind. Damit lassen sich insbesondereGrenzflächenoder Verbindungskanten schützen.Dies ist insbesondere bei Sterilisationsvorgängen, denen das chirurgischeInstrument in der Regel unterworfen sein wird, unerläßlich. Außerdem kanneine Deckschicht gleichfalls als Isolationsschicht ausgebildet werden.Besonders einfach und vorteilhaft ist die Deckschicht, wenn sie durchAnspritzen eines Kunststoffs hergestellt wird.EspeciallyCheapit is when the first and / or the second tool element at least partiallycovered with a cover layer. This can be especiallyinterfacesor protect connection edges.This is especially true in sterilization procedures involving the surgicalInstrument will usually be subject, indispensable. In addition, cana cover layer are also formed as an insulating layer.The cover layer is particularly simple and advantageous when passing throughInjection of a plastic is produced.
Umein sicheres Fließendes Fluids in den Fluidkanälenzu gewährleisten,umfaßtmindestens ein Abschnitt des ersten und/oder des zweiten Fluidkanalsein Rohr. Damit kann vermieden werden, daß beispielsweise aufgrund vonVerkleben oder Verlöten vonzwei Werkzeugelementen ein Fluidkanal bei der Herstellung verschlossenwird.Arounda safe flowof the fluid in the fluid channelsto ensure,comprisesat least a portion of the first and / or the second fluid channela pipe. This can be avoided that, for example, due toGluing or soldering oftwo tool elements closed a fluid channel during manufacturebecomes.
Gemäß einerbevorzugten Ausführungsform derErfindung kann vorgesehen sein, daß der erste und der zweiteFluidkanal in einem Bereich des ersten Werkzeugs im wesentlichenin einer Werkzeugebene angeordnet sind, daß der erste und der zweite Fluidkanalaußerhalbdes Bereichs des ersten Werkzeugs im wesentlichen in einer Zuleitungsebeneangeordnet sind, die im wesentlichen quer zur Werkzeugebene verläuft. Mitdieser Anordnung kann insbesondere eine schlanke Bauform erreichtwerden, was fürendoskopische Instrumente von Vorteil ist. Außerdem ermöglicht diese Ausgestaltung,daß beispielsweisebei einer zwei schwenkbare Branchen umfassenden Schere Anschlüsse derbeiden Fluidkanälequer zur Scherenebene abstehen und so eine Bewegung der zweitenBranche relativ zur ersten Branche nicht stören können.According to onepreferred embodiment ofInvention may be provided that the first and the secondFluid channel in a region of the first tool substantiallyare arranged in a mold plane, that the first and the second fluid channeloutsidethe area of the first tool substantially in a feed levelare arranged, which extends substantially transversely to the tool level. WithThis arrangement can be achieved in particular a slim designbecome, what forendoscopic instruments is beneficial. In addition, this embodiment allowsthat, for examplein a two swiveling industries comprehensive scissors connections oftwo fluid channelsprotrude transversely to the plane of the scissors and so a movement of the secondIndustry relative to the first industry.
EineDrehung der Zuleitungsebene und der Werkzeugebene kann beispielsweiseerreicht werden, indem die beiden Fluidkanäle entsprechend gekrümmt sind.Günstigist es jedoch, wenn eine zwei Teilkammern umfassende Fluidverteilkammerin einem Übergangsbereichzwischen dem ersten Werkzeug und einem werkzeugfreien Bereich vorgesehen ist,wenn die Fluidverteilkammer zwei parallel zur Werkzeugebene undzwei parallel zur Zuleitungsebene ausgerichtete Anschlüsse umfaßt und wennjeweils eine der beiden Teilkammern eine Fluidverbindung zwischeneinem parallel zur Werkzeugebene und einem parallel zur Zuleitungsebeneausgerichteten Anschluß bildet.Auf diese Weise werden komplizierte und die Fluidkanäle in ihrerStabilitätgefährdendeBie gungen derselben vermieden. Die Fluidkanäle können beidseitig direkt an dieFluidverteilkammer angeschlossen werden.ARotation of the feed line and the tool level can be, for examplecan be achieved by the two fluid channels are curved accordingly.CheapHowever, it is when a two-chamber fluid distribution chamberin a transition areabetween the first tool and a tool-free area,when the Fluidverteilkammer two parallel to the tool level andcomprises two aligned parallel to the feed line connections and ifone of the two sub-chambers a fluid connection betweenone parallel to the tool level and one parallel to the feed levelaligned connection forms.In this way, complicated and the fluid channels in theirstabilityhazardousBie ments same avoided. The fluid channels can be directly on both sides of theFluid distribution chamber are connected.
ZurAusbildung des Instruments als Monopolar- und/oder Bipolarinstrumentist es vorteilhaft, wenn das erste und das zweite Werkzeug elektrisch gegeneinanderisoliert sind. Dadurch werden unerwünschte Kurzschlüsse vermieden.Ein Koagulieren von Weichgewebe mittels Anlegen eines Hochfrequenzstromsan das Instrument ist auf einfache Weise möglich.toTraining the instrument as a monopolar and / or bipolar instrumentit is advantageous if the first and the second tool electrically against each otherare isolated. This avoids unwanted short circuits.Coagulation of soft tissue by application of a high frequency currentto the instrument is possible in a simple manner.
Besondersgünstigist es, wenn die erste Branche eine erste elektrische Zuleitungumfaßt,die mit dem ersten Werkzeug in Verbindung steht, und wenn an derersten oder der zweiten Branche eine zweite, von der ersten elektrischisolierte elektrische Zuleitung vorgesehen ist, die mit dem zweitenWerkzeug in Verbindung steht. Auf diese Weise kann ein Strom einfachund sicher zu den beiden Werkzeugen geleitet werden, beispielsweiseum das Werkzeug anzutreiben oder um Weichgewebe zu koagulieren.EspeciallyCheapit is when the first branch has a first electrical leadcompriseswhich is related to the first tool, and if at thefirst or the second branch a second, from the first electricinsulated electrical supply line is provided, which is connected to the secondTool communicates. That way, a stream can be easyand safely routed to the two tools, for exampleto drive the tool or to coagulate soft tissue.
Grundsätzlich istes von Vorteil, wenn die beiden Fluidkanäle so miteinander verbundensind, daß keinFluid auslaufen kann. Es kann jedoch günstig sein, wenn mindestenseiner der beiden Fluidkanälein seinem distalen Endbereich mit Öffnungen versehen ist. Diebeiden Fluidkanäledienen dann einerseits als Kühlkanal,andererseits als Spülkanal zumSpüleneines Operationsbereichs mit einer dafür geeigneten Spülflüssigkeit.BasicallyIt is advantageous if the two fluid channels are connected to each otherare that noFluid can leak. However, it can be beneficial if at leastone of the two fluid channelsis provided in its distal end with openings. Thetwo fluid channelsserve on the one hand as a cooling channel,on the other hand as a flushing channel fordo the washing upan operating area with a suitable rinsing liquid.
Vorzugsweiseumfassen das erste und das zweite Werkzeug jeweils eine Schneide.So läßt sich aufeinfache Art eine Schere ausbilden.PreferablyThe first and second tools each comprise a cutting edge.That's how it workssimple form a pair of scissors.
Dienachfolgende Zeichnung dient im Zusammenhang mit der Beschreibungbevorzugter Ausführungsformender Erfindung der näherenErläuterung.Es zeigen:TheThe following drawing is used in conjunction with the descriptionpreferred embodimentsthe invention of the closerExplanation.Show it:
In
Amproximalen Ende
Diebeiden Zuleitungen
ZurVermeidung einer übermäßigen Erwärmung derbeiden Schneiden
Wiein
Diebeiden Fluidkanäle
DerAufbau der Schneide
Beider in den
In
Schließlich istin
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002101569DE10201569B4 (en) | 2002-01-11 | 2002-01-11 | Surgical instrument |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002101569DE10201569B4 (en) | 2002-01-11 | 2002-01-11 | Surgical instrument |
| Publication Number | Publication Date |
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| DE10201569A1 DE10201569A1 (en) | 2003-07-31 |
| DE10201569B4true DE10201569B4 (en) | 2008-12-24 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2002101569Expired - Fee RelatedDE10201569B4 (en) | 2002-01-11 | 2002-01-11 | Surgical instrument |
| Country | Link |
|---|---|
| DE (1) | DE10201569B4 (en) |
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| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8127 | New person/name/address of the applicant | Owner name:AESCULAP AG, 78532 TUTTLINGEN, DE | |
| 8364 | No opposition during term of opposition | ||
| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee | Effective date:20130801 |