DE10314072B4 - Surgical instrument - Google Patents
Surgical instrument Download PDFInfo
- Publication number
- DE10314072B4 DE10314072B4 DE10314072A DE10314072A DE10314072B4 DE 10314072 B4 DE10314072 B4 DE 10314072B4 DE 10314072 A DE10314072 A DE 10314072A DE 10314072 A DE10314072 A DE 10314072A DE 10314072 B4 DE10314072 B4 DE 10314072B4
- Authority
- DE
- Germany
- Prior art keywords
- handle
- catch
- handle parts
- instrument according
- handle part
- 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 - Lifetime
Links
Classifications
-
- 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
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
- A61B17/2833—Locking means
-
- 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
- A61B2017/2946—Locking means
-
- 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
- A61B2017/305—Tweezer like handles with tubular extensions, inner slidable actuating members and distal tools, e.g. microsurgical instruments
Abstract
Chirurgisches Instrument mit zwei gegeneinander bewegbaren Griffteilen und mit einer Umlaufsperre zur gegenseitigen Fixierung der Griffteile in einer Schließstellung und zur Lösung der Fixierung beim weiteren Annähern der Griffteile über die Schließstellung hinaus in eine Öffnungsstellung, die an einem ersten Griffteil einen Rastrücksprung und an einem zweiten Griffteil eine in diesen eingreifende und dadurch die Griffteile in der Schließstellung fixierende Raste umfaßt, die beim Schließen der Griffteile an einer Seite des Rastrücksprunges vorbeibewegt wird und beim Öffnen an der anderen, wobei an dem ersten Griffteil eine erste Steuerkurve angeordnet ist, die beim Schließen der Griffteile gegen einen die Schließbewegung begrenzenden Anschlag die Raste in eine Einraststellung bringt, in der sie beim Öffnen der Griffteile zwangsläufig in den Rastrücksprung eintritt, wobei der Rastrücksprung eine zweite Steuerkurve trägt, die die Raste beim Eintauchen in den Rastrücksprung aus einer der ersten Steuerkurve gegenüberliegenden Eintrittsposition in eine einer dritten Steuerkurve am ersten Griffteil...surgical Instrument with two mutually movable handle parts and with a circulation lock for mutual fixation of the handle parts in a closed position and to the solution the fixation on further approaching the handle parts over the closed position out into an open position, the at a first handle part a latch return and at a second Handle part in this engaging and thereby the handle parts in the closed position includes fixing catch, when closing the handle parts is moved past on one side of the latch recess and when opening at the other, wherein at the first handle part, a first cam is arranged when closing the handle parts against a closing movement limiting stop the latch brings into a latching position, in which they open the Grips inevitably in the latch jump occurs, wherein the latch return a second control curve, the catch when diving into the latch return from one of the first Control cam opposite Entry position into a third control curve on the first handle part ...
Description
Die Erfindung betrifft ein chirurgisches Instrument mit zwei gegeneinander bewegbaren Griffteilen und mit einer Umlaufsperre zur gegenseitigen Fixierung der Griffteile in einer Schließstellung und zur Lösung der Fixierung beim weiteren Annähern der Griffteile über die Schließstellung hinaus in eine Öffnungsstellung, die an einem ersten Griffteil einen Rastrücksprung und an einem zweiten Griffteil eine in diesen eingreifende und dadurch die Griffteile in der Schließstellung fixierende Raste umfaßt, die beim Schließen der Griffteile an einer Seite des Rastrücksprunges vorbeibewegt wird und beim Öffnen an der anderen, wobei an dem ersten Griffteil eine erste Steuerkurve angeordnet ist, die beim Schließen der Griffteile gegen einen die Schließbewegung begrenzenden Anschlag die Raste in eine Einraststellung bringt, in der sie beim Öffnen der Griffteile zwangsläufig in den Rastrücksprung eintritt, wobei der Rastrücksprung eine zweite Steuerkurve trägt, die die Raste beim Eintauchen in den Rastrücksprung aus einer der ersten Steuerkurve gegenüberliegenden Eintrittsposition in eine einer dritten Steuerkurve am ersten Griffteil gegenüberliegende Austrittsposition bewegt, und wobei die dritte Steuerkurve die Raste beim erneuten Schließen der Griffteile aus der Schließstellung heraus in eine Ausraststellung bringt, aus der sie beim Öffnen der Griffteile zwangsläufig am Rastrücksprung vorbeibewegt wird.The The invention relates to a surgical instrument with two against each other movable handle parts and with a circulation lock to each other Fixation of the handle parts in a closed position and to solve the Fixation on further approaching the handle parts over the closed position out into an open position, the at a first handle part a latch return and at a second Handle part in this engaging and thereby the handle parts in the closed position includes fixing catch, when closing the handle parts is moved past on one side of the latch recess and when opening at the other, wherein at the first handle part, a first cam is arranged when closing the handle parts against a closing movement limiting stop the latch brings into a latching position, in which they open the Grips inevitably in the latch jump enters, with the latch return carries a second cam, the catch when diving into the latch return from one of the first Control cam opposite entry position in a third control cam on the first handle part opposite Exit position moves, and wherein the third control cam the latch closing again the handle parts from the closed position out into a disengaged position, from which they open the Grips inevitably on Engagement recess is moved past.
Chirurgische
Instrumente dieser Art werden mit einer solchen Umlaufsperre ausgestattet,
damit die beiden Griffteile in der Schließstellung fixiert und in einfacher
Weise durch erneutes Gegeneinanderdrücken der Griffteile wieder voneinander
gelöst
werden können.
Beispielsweise ist ein solches Instrument aus der
Bei all diesen Instrumenten besteht das Problem, daß beim Schließen der Griffteile darauf geachtet werden muß, die Griffteile nicht zu weit einander anzunähern, da sonst die Raste am Rastrücksprung vorbei bewegt wird und sofort wieder beim Loslassen der Griffteile an dem Rastrücksprung vorbeiläuft, ohne in diesen einzurasten. Mit anderen Worten darf man die Griffteile nicht so weit einander annähern, daß bereits beim ersten Annähern wieder eine Lösung der Umlaufsperre eintritt, ohne daß diese vorher überhaupt in den Rastrücksprung eingerastet ist. Der Operateur muß daher beim Schließen der Griffteile sehr vorsichtig vorgehen, um tatsächlich die Einrastung zu erreichen und nicht versehentlich die Griffteile bis zur Löseposition von Raste und Rastrücksprung zu bewegen.at All these instruments have the problem that when closing the Handle parts must be taken to the handle parts not to to approach each other otherwise the catch on the latch return jump is moved past and immediately when releasing the handle parts at the latch return passes, without locking into it. In other words, you can use the handle parts not so close to each other, that already on the first approach again a solution the circulation lock occurs without them before at all in the latch jump is engaged. The surgeon must therefore when closing the Handle handles very carefully to actually lock into place and do not inadvertently move the handles to the release position of detent and latch return to move.
Ein
medizinisches Instrument mit einer einfachen Zahnstangensperre ist
aus der
In
der
Es ist Aufgabe der Erfindung, ein chirurgisches Instrument der gattungsgemäßen Art so weiterzubilden, daß die Handhabbarkeit des Instruments trotz der relativ komplizierten Umlaufsperre nicht beeinträchtigt wird.It The object of the invention is a surgical instrument of the generic type educate so that the Handling of the instrument despite the relatively complicated circulation lock not impaired becomes.
Diese Aufgabe wird bei einem gattungsgemäßen Instrument erfindungsgemäß dadurch gelöst, daß der Rastrücksprung sowie die erste und die dritte Steuerkurve in einem Einsatz angeordnet sind, der in das erste Griffteil eingesetzt ist.These Task is in a generic instrument according to the invention thereby solved that the latch jump and the first and third control cams arranged in an insert are inserted in the first handle part.
Es wird also eine Zwangsführung der Raste dergestalt vorgenommen, daß beim Schließen der Griffteile diese bis auf einen Anschlag geschlossen werden und daß dabei die Raste durch die erste Steuerkurve in eine Position bewegt wird, aus der sie beim öffnen der Griffteile zwangsläufig in den Rastrücksprung eintreten muß. Im Rastrücksprung selbst wird die Raste durch die Steuerkurve der Raste so weit bewegt, daß bei einem erneuten Schließen der Griffteile die Raste nicht wieder zurück in die erste Steuerkurve gelangt, sondern jetzt in eine dritte, neben der ersten Steuerkurve angeordnete Steuerkurve, welche die Raste beim anschließenden öffnen der Griffteile seitlich an dem Rastrücksprung vorbeiführt. Der Benutzer kann also beim Schließen der Griffteile diese bis auf einen Anschlag einander annähern und ist sicher, daß beim anschließenden Loslassen der Griffteile die Raste in den Rastrücksprung eintritt und dadurch die Griffteile in der Schließstellung verriegelt. Erst bei einem erneuten Zusammendrücken der Griffteile wird diese Verriegelung gelöst, besondere Sorgfalt muß der Benutzer dabei nicht auf die Schließbewegung richten, da diese in jedem Fall bis zu dem Anschlag durchgeführt wird.It becomes a forced tour the catch made such that when closing the handle parts these are closed up to a stop and that thereby the catch is moved to a position by the first control cam, from the open the handle parts inevitably in the latch jump must enter. In the latch return even the catch is moved so far by the control cam of the catch that at a renewed closing the grip parts the catch is not back to the first cam but now in a third, next to the first cam arranged cam, which the catch in the subsequent open the Handle parts laterally to the latch return passes. The user can thus close this when closing the handle parts approach each other to a stop and is sure that at subsequent Release the handle parts the catch enters the latching recess and thereby the handle parts in the closed position locked. Only with a renewed compression of the handle parts is this Lock solved, special care must the Do not direct the user to the closing movement, because this in any case, until the stop is carried out.
Eine solche Ausgestaltung läßt sich bei allen chirurgischen Instrumenten einsetzen, bei denen durch eine Schließbewegung von zwei Griffteilen ein Werkzeug bewegt werden soll, beispielsweise bei Klemmen, Scheren, Zangen, Pinzetten etc. Dabei ist es vorteilhaft, wenn die Griffteile über eine Überlastfeder auf die Werkzeuge wirken, so daß bei der vollständigen Schließbewegung der Griffteile gegen einen Anschlag die Werkzeuge gegebenenfalls einen geringeren Weg zurücklegen, falls sie durch zwischen den Werkzeugen liegende Teile an einer vollständigen Schließbewegung der Werkzeuge gehindert sind. Trotzdem kann der Benutzer die Griffteile bis zum vollständigen Schließen gegen ihren Anschlag bewegen.Such a configuration can be used in all surgical instruments in which a tool is to be moved by a closing movement of two handle parts, for example at Clamps, scissors, pliers, tweezers, etc. It is advantageous if the handle parts act on an overload spring on the tools, so that in the complete closing movement of the handle parts against a stop, the tools optionally cover a smaller way, if they pass through between the tools lying parts are prevented from a complete closing movement of the tools. Nevertheless, the user can move the handle parts until fully closed against their stop.
Grundsätzlich wäre es möglich, daß die Raste durch eine bahnförmige Steuerkurve vollständig in ihrer Bewegung geführt wird, es ist aber gemäß einer bevorzugten Ausführungsform besonders vorteilhaft, wenn auf die Raste eine Feder wirkt, die die Raste bei Auslenkung nach beiden Seiten in eine Mittelstellung zurückbewegt. Bei einer solchen Ausgestaltung genügt es, die Steuerkurve als einfache Kulisse auszubilden, die einseitig an der Raste anliegt und die Raste entgegen der Wirkung der Feder nach der einen oder der anderen Seite auslenkt.Basically it would be possible for the catch by a web-shaped Cam fully guided in their movement is, but it is according to a preferred embodiment particularly advantageous if the spring acts on a spring, the the detent on deflection on both sides in a middle position moved back. In such an embodiment, it is sufficient, the cam as form a simple backdrop that rests on one side of the catch and the catch against the action of the spring after the one or the other side deflects.
Günstig ist es, wenn die Raste verschwenkbar an dem zweiten Griffteil gelagert ist.Cheap is it when the catch is pivotally mounted on the second handle part is.
Auch die Umkehrung dieses Prinzips ist möglich, die Raste kann feststehen und die Steuerkurve kann an den Griffteilen beweglich gelagert werden, so daß sich auch in diesem Falle die beschriebene Relativbewegung ergibt. Insbesondere kann auch der Einsatz über eine Feder in einer Mittelstellung gehalten und gegen die Federkraft nach beiden Seiten auslenkbar sein.Also the reversal of this principle is possible, the catch can be fixed and the control cam can be movably mounted on the handle parts, so that also in this case results in the described relative movement. Especially can also use over a spring held in a central position and against the spring force to be deflectable to both sides.
Die Schließbewegung der Griffteile kann durch einen Anschlag begrenzt sein, der als separater Anschlag an den Griffteilen vorgesehen ist, bei einer besonders bevorzugten Ausführungsform wird jedoch der die Schließbewegung der Griffteile begrenzende Anschlag durch die erste und die dritte Steuerkurve einerseits und die Raste andererseits gebildet. Beim Schließen wird also die Raste gegen einen Tiefstpunkt der Steuerkurve gedrückt, und dadurch wird die Schließbewegung begrenzt, bei der Öffnung der Griffteile aus dieser Anschlagposition bewegt sich dann die Raste längs der Steuerkurve in eine Position, in der sie entweder in den Rastrücksprung eintritt oder aber in der dritten Steuerkurve am Rastrücksprung vorbeigeführt wird.The closing movement The handle parts may be limited by a stop, as Separate stop is provided on the handle parts, at a particularly preferred embodiment However, this is the closing movement the handle parts limiting stop by the first and the third Control cam on the one hand and the catch formed on the other. At the Shut down So the catch is pressed against a trough of the cam, and this will cause the closing movement limited, at the opening of the Handle parts from this stop position then moves the catch along the Control cam in a position in which it either enters the latch return or is passed in the third cam on the latch return jump.
Es wäre aber natürlich auch möglich, den Anschlag einfach an den Griffteilen anzuordnen, so daß die Schließbewegung der Griffteile direkt begrenzt wird. Beispielsweise könnten an beiden Griffteilen entsprechende Anschlagflächen vorgesehen sein, die ein weiteres Zusammenführen der Griffteile begrenzen.It but would be Naturally also possible, simply to arrange the stop on the handle parts, so that the closing movement the handle parts is limited directly. For example, could Both handle parts corresponding stop surfaces may be provided, the one further merging limit the grip parts.
Es ist vorteilhaft, wenn die erste und die dritte Steuerkurve durch die Seitenflächen eines Vorsprungs gebildet werden, der dem Rastrücksprung gegenüberliegt. Beispielsweise kann dieser Vorsprung keilförmig ausgebildet sein.It is advantageous if the first and the third control curve through the side surfaces a projection are formed, which is opposite to the latching return. For example, this projection may be wedge-shaped.
Der Rastrücksprung ist vorzugsweise zum ersten Griffteil hin offen und kann beispielsweise keilförmig ausgebildet sein.Of the Engagement recess is preferably open to the first handle part and can, for example cuneiform be educated.
Bei einer bevorzugten Ausführungsform ist weiterhin vorgesehen, daß an dem Rastrücksprung an seiner dem ersten Griffteil abgewandten Seite eine Aufgleitfläche für die Raste angeordnet ist, welche diese beim Schließen der Griffteile entgegen der Wirkung der Feder aus ihrer Mittelstellung heraus bewegt.at a preferred embodiment is further provided that at to the latch return on its side facing away from the first handle part a sliding surface for the catch is arranged, which oppose this when closing the handle parts the action of the spring moves out of its center position out.
Weiterhin kann vorgesehen sein, daß an dem Rastrücksprung an seiner dem ersten Griffteil abgewandten Seite eine Aufgleitfläche für die Raste angeordnet ist, welche diese beim Öffnen der Griffteile entgegen der Wirkung der Feder aus ihrer Mittelstellung heraus bewegt. Die Bewegungsrichtung der Raste längs der Aufgleitflächen ist dabei beim Öffnen und Schließen entgegengesetzt und die durch die Feder definierte Mittelstellung ist so gewählt, daß die Raste beim Schließen der Griffteile aus der vollständig geöffneten Stellung auf die Aufgleitfläche trifft, die die Raste in die erste Steuerkurve führt.Farther can be provided that on the Engagement recess arranged on its side facing away from the first handle part a sliding surface for the catch which is this when opening the handle parts against the action of the spring from its center position moved out. The direction of movement of the catch along the slide surfaces is while opening and Shut down opposite and defined by the spring center position is chosen that the catch while closing the handle parts from the completely open Position on the sliding surface meets, which leads the catch in the first cam.
Die erste und die dritte Steuerkurve können gemeinsam einen W-förmigen Verlauf haben, dabei ist es günstig, wenn die erste und die dritte Steuerkurve an ihren tiefsten Stellen verrundet sind.The first and the third control curve can together have a W-shaped course have, it is cheap, when the first and the third control curve at their lowest points rounded.
Es kann vorgesehen sein, daß die Raste die Form eines quer zur Schließrichtung der Griffteile verlaufenden Steges hat. Dieser Steg kann vorzugsweise am freien Ende eines schwenkbar am zweiten Griffteil gelagerten Haltearmes angeordnet sein.It can be provided that the Snap the shape of a transverse to the closing direction of the handle parts Steges has. This web can preferably be pivoted at the free end of a Be arranged on the second handle part supporting arms.
Weiterhin kann vorgesehen sein, daß der Rastrücksprung und gegebenenfalls die Aufgleitflächen Teil eines Quersteges sind, der quer zur Schließrichtung verlaufend am ersten Griffteil gehalten ist.Farther can be provided that the latch return and optionally the sliding surfaces part of a crossbar which are transverse to the closing direction is kept running on the first handle part.
Die Griffteile können in beliebiger Weise gegeneinander bewegbar sein, besonders vorteilhaft ist es, wenn die Griffteile gegeneinander verschwenkbar sind.The Handle parts can be movable in any way against each other, particularly advantageous It is when the handle parts are mutually pivotable.
Die nachfolgende Beschreibung bevorzugter Ausführungsformen der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:The following description of preferred embodiments of the invention used in conjunction with the drawings for further explanation. Show it:
Das
in der Zeichnung nur teilweise dargestellte Instrument
Die
beiden Griffteile werden über
eine an beiden Griffteilen angreifende Biegefeder
Am
zweiten Griffteil ist in einer Ausnehmung
An
seinem freien Ende trägt
der Haltearm
Dem
Rastkörper
An
seinen beiden Außenseiten
verläuft
der Quersteg
Wenn
die beiden Griffteile
Beim
Schließen
der beiden Griffteile
Die
Anlagefläche
Öffnet man
ausgehend von dieser Stellung die Griffteile
Drückt man
die beiden Griffteile
Sobald
der Steg
Der
Benutzer kann also einfach die beiden Griffteile
Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE10314072A DE10314072B4 (en) | 2003-03-28 | 2003-03-28 | Surgical instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10314072A DE10314072B4 (en) | 2003-03-28 | 2003-03-28 | Surgical instrument |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10314072A1 DE10314072A1 (en) | 2004-10-21 |
DE10314072B4 true DE10314072B4 (en) | 2009-01-15 |
Family
ID=33016049
Family Applications (1)
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DE10314072A Expired - Lifetime DE10314072B4 (en) | 2003-03-28 | 2003-03-28 | Surgical instrument |
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DE (1) | DE10314072B4 (en) |
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US8459525B2 (en) | 2008-02-14 | 2013-06-11 | Ethicon Endo-Sugery, Inc. | Motorized surgical cutting and fastening instrument having a magnetic drive train torque limiting device |
US8652120B2 (en) | 2007-01-10 | 2014-02-18 | Ethicon Endo-Surgery, Inc. | Surgical instrument with wireless communication between control unit and sensor transponders |
US8801734B2 (en) | 2010-07-30 | 2014-08-12 | Ethicon Endo-Surgery, Inc. | Circular stapling instruments with secondary cutting arrangements and methods of using same |
US8808325B2 (en) | 2006-09-29 | 2014-08-19 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument with staples having crown features for increasing formed staple footprint |
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DE102014103769A1 (en) | 2014-03-19 | 2015-09-24 | Aesculap Ag | Forced lock for microneedle holder |
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US8905977B2 (en) | 2004-07-28 | 2014-12-09 | Ethicon Endo-Surgery, Inc. | Surgical stapling instrument having an electroactive polymer actuated medical substance dispenser |
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DE102014103769B4 (en) | 2014-03-19 | 2022-10-13 | Aesculap Ag | Enforced lockout for microneedle holders |
DE102014110881A1 (en) | 2014-07-31 | 2016-02-04 | Aesculap Ag | Surgical instrument with handle and handle lock |
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