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Número de publicaciónDE10314072 A1
Tipo de publicaciónSolicitud
Número de solicitudDE2003114072
Fecha de publicación21 Oct 2004
Fecha de presentación28 Mar 2003
Fecha de prioridad28 Mar 2003
También publicado comoDE10314072B4
Número de publicación03114072, 2003114072, DE 10314072 A1, DE 10314072A1, DE-A1-10314072, DE03114072, DE10314072 A1, DE10314072A1, DE2003114072
InventoresRupert Dipl.-Ing. Mayenberger, Jens Ole Dipl.-Ing. Weißgraf
SolicitanteAesculap Ag & Co. Kg
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: DPMA, Espacenet
Surgical instrument e.g. surgical pliers, clamping tool, cutting tool, has rotation lock that has indentation bar engaging indentation return to fix movable handles of surgical instrument in closed position
DE 10314072 A1
Resumen
The instrument (1) has two opposing movable handles (3,4), and a rotation lock for fixing the handles in closed position. The rotation lock includes an indentation bar (14) on one handle (3) and an indentation return (25) on the other handle (4). The indentation bar engages the indentation return to fix the handles in closed position. The indentation bar can be moved in release position through cam motion to open the handles from closed position.
Reclamaciones(17)  traducido del alemán
  1. 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, dadurch gekennzeichnet , daß an dem ersten Griffteil ( Surgical instrument with two mutually movable handle parts and with a circulation check for mutual fixation of the handle parts in a closed position and to solve the fixation upon further approximating the handle parts of the lock position into an open position, one at a first handle portion a locking recess and a second handle portion in these engaging and thereby comprises the handle parts in the closed position fixing notch, which is moved during the closing of the grip parts at a side of the latch return jump, and when opening to the other, characterized in that on the first handle part ( 4 4 ) eine erste Steuerkurve ( ) A first control curve ( 22 22 ) angeordnet ist, die beim Schließen der Griffteile ( Is arranged), which upon closure of the handle parts ( 3 3 , . 4 4 ) gegen einen die Schließbewegung begrenzenden Anschlag die Raste ( ) Against the closing movement stop limiting the catch ( 14 14 ) in eine Einraststellung bringt, in der sie beim Öffnen der Griffteile ( ) Into a latched position in which it when you open the handle parts ( 3 3 , . 4 4 ) zwangsläufig in den Rastrücksprung ( ) Necessarily in the engagement recess ( 25 25 ) eintritt, daß der Rastrücksprung ( ) Occurs in that the locking recess ( 25 25 ) eine zweite Steuerkurve ( ) A second control curve ( 26 26 , . 27 27 ) trägt, die die Raste ( ) Which the catch ( 14 14 ) beim Eintauchen in den Rastrücksprung ( ) When plunging into the detent recess ( 25 25 ) aus einer der ersten Steuerkurve ( ) From one of the first control curve ( 22 22 ) gegenüberliegenden Eintrittsposition in eine einer dritten Steuerkurve ( ) Opposite entry position into one of a third control curve ( 23 23 ) am ersten Griffteil ( ) On the first handle portion ( 4 4 ) gegenüberliegende Austrittsposition bewegt, und daß die dritte Steuerkurve ( ) Opposite the exit position is moved, and said third cam ( 23 23 ) die Raste ( ) The catch ( 14 14 ) beim erneuten Schließen der Griffteile ( ) When re-closing the handle parts ( 3 3 , . 4 4 ) aus der Schließstellung heraus in eine Ausraststellung bringt, aus der sie beim Öffnen der Griffteile ( ) Brings from the closed position to an unlatched position from which it when you open the handle parts ( 3 3 , . 4 4 ) zwangsläufig am Rastrücksprung ( ) Bound on the locking recess ( 25 25 ) vorbeibewegt wird. ) Is moved.
  2. Instrument nach Anspruch 1, dadurch gekennzeichnet, daß auf die Raste ( An instrument according to claim 1, characterized in that the detent ( 14 14 ) eine Feder ( ) A spring ( 13 13 ) wirkt, die die Raste ( ) Acts that the catch ( 14 14 ) bei Auslenkung nach beiden Seiten in eine Mittelstellung zurückbewegt. ) Moved back when deflected to both sides in a central position.
  3. Instrument nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Raste ( Instrument according to one of claims 1 or 2, characterized in that the detent ( 14 14 ) verschwenkbar an dem zweiten Griffteil ( ) Pivoted on the second handle part ( 3 3 ) gelagert ist. ) Is mounted.
  4. Instrument nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der die Schließbewegung der Griffteile ( Instrument according to one of the preceding claims, characterized in that the closing movement of the handle parts ( 3 3 , . 4 4 ) begrenzende Anschlag durch die erste und die dritte Steuerkurve ( ) Limiting stop by the first and the third control curve ( 22 22 , . 23 23 ) einerseits und die Raste ( ) On the one hand and the catch ( 14 14 ) andererseits gebildet wird. ) Is the other hand.
  5. Instrument nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die erste und die dritte Steuerkurve ( Instrument according to one of the preceding claims, characterized in that the first and the third cam ( 22 22 , . 23 23 ) durch die Seitenflächen eines Vorsprungs ( ) By the side surfaces of a protrusion ( 21 21 ) gebildet werden, der dem Rastrücksprung ( ) Are made of the engagement recess ( 25 25 ) gegenüberliegt. ) Is opposite.
  6. Instrument nach Anspruch 5, dadurch gekennzeichnet, daß der Vorsprung ( Instrument according to claim 5, characterized in that the projection ( 21 21 ) keilförmig ausgebildet ist. ) Is wedge-shaped.
  7. Instrument nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Rastrücksprung ( Instrument according to one of the preceding claims, characterized in that the detent recess ( 25 25 ) zum ersten Griffteil ( ) For the first handle portion ( 4 4 ) hin offen ist. ) Is open.
  8. Instrument nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Rastrücksprung ( Instrument according to one of the preceding claims, characterized in that the detent recess ( 25 25 ) keilförmig ausgebildet ist. ) Is wedge-shaped.
  9. Instrument nach einem der Ansprüche 2 bis 8, dadurch gekennzeichnet, daß an dem Rastrücksprung ( Instrument according to one of claims 2 to 8, characterized in that on the latching recess ( 25 25 ) an seiner dem ersten Griffteil ( ) At its first handle part ( 4 4 ) zugewandten Seite eine Aufgleitfläche ( ) Side facing a slide-on surface ( 28 28 ) für die Raste ( ) For the catch ( 14 14 ) angeordnet ist, welche diese beim Schließen der Griffteile ( Is disposed) which it when closing of the handle members ( 3 3 , . 4 4 ) entgegen der Wirkung der Feder ( ) Against the action of spring ( 13 13 ) aus ihrer Mittelstellung heraus bewegt. ) Moved from its central position.
  10. Instrument nach einem der Ansprüche 2 bis 9, dadurch gekennzeichnet, daß an dem Rastrücksprung ( An instrument according to any one of claims 2 to 9, characterized in that on the latching recess ( 25 25 ) an seiner dem ersten Griffteil ( ) At its first handle part ( 4 4 ) zugewandten Seite eine Aufgleitfläche ( ) Side facing a slide-on surface ( 29 29 ) für die Raste ( ) For the catch ( 14 14 ) angeordnet ist, welche diese beim Öffnen der Griffteile ( Is located), which upon opening the handle parts ( 3 3 , . 4 4 ) entgegen der Wirkung der Feder aus ihrer Mittelstellung heraus bewegt. ) Moved against the action of the spring from its center position.
  11. Instrument nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die erste und die dritte Steuerkurve ( Instrument according to one of the preceding claims, characterized in that the first and the third cam ( 22 22 , . 23 23 ) gemeinsam einen W-förmigen Verlauf haben. ) Together have a W-shaped curve.
  12. Instrument nach Anspruch 11, dadurch gekennzeichnet, daß die erste und die dritte Steuerkurve ( An instrument according to claim 11, characterized in that the first and the third cam ( 22 22 , . 23 23 ) an ihren tiefsten Stellen verrundet sind. ) Are rounded at their lowest points.
  13. Instrument nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Raste ( Instrument according to one of the preceding claims, characterized in that the detent ( 14 14 ) die Form eines quer zur Schließrichtung der Griffteile ( ) Has the shape of a cross to the closing direction of the grip parts ( 3 3 , . 4 4 ) verlaufenden Steges hat. ) Extending ridge has.
  14. Instrument nach Anspruch 13, dadurch gekennzeichnet, daß der Steg am freien Ende eines schwenkbar am zweiten Griffteil ( An instrument according to claim 13, characterized in that the web at the free end of a pivotally on the second handle part ( 3 3 ) gelagerten Haltearmes ( ) Supported the retention bracket ( 12 12 ) angeordnet ist. ) Is arranged.
  15. Instrument nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Rastrücksprung ( Instrument according to one of the preceding claims, characterized in that the detent recess ( 25 25 ) und gegebenenfalls die Aufgleitflächen ( ) And optionally the slide-on surfaces ( 26 26 , . 27 27 ) Teil eines Quersteges ( ) Is part of a crosspiece ( 24 24 ) sind, der quer zur Schließrichtung verlaufend am ersten Griffteil ( ) Are transversely to the closing direction running on the first handle portion ( 4 4 ) gehalten ist. ) Is held.
  16. Instrument nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß der Rastrücksprung ( Instrument according to one of the preceding claims, characterized in that the detent recess ( 25 25 ) und die erste und die dritte Steuerkurve ( ) And the first and the third cam ( 22 22 , . 23 23 ) an einem Einsatz ( ) On an insert ( 19 19 ) angeordnet sind, der in das erste Griffteil ( Are arranged), in the first grip part ( 4 4 ) eingesetzt ist. ) Is inserted.
  17. Instrument nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Griffteile ( Instrument according to one of the preceding claims, characterized in that the handle parts ( 3 3 , . 4 4 ) gegeneinander verschwenkbar sind. ) Are relative to each other.
Descripción  traducido del alemán
  • [0001] [0001]
    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 auf der anderen. The invention relates to an open position, at a first handle portion a locking recess and a surgical instrument having two mutually movable handle parts and with a circulation check for mutual fixation of the handle parts in a closed position and to solve the fixation upon further approximating the handle parts on the closed position also a second handle portion an engaging in these and thereby comprises the handle parts in the closed position fixing notch, which is moved during the closing of the grip parts at a side of the latch return jump and opening on the other.
  • [0002] [0002]
    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. Surgical instruments of this kind are provided with such a circulation check to ensure that the two handle parts is fixed in the closed position and can be released from one another again by renewed pressing together the handle parts in a simple manner. Beispielsweise ist ein solches Instrument aus der For example, such an instrument from the DE 42 07 124 C1 DE 42 07 124 C1 bekannt. known.
  • [0003] [0003]
    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. In all these instruments, the problem is that when you close the handle parts must be taken to ensure the handles too far closer to each other, otherwise the latch is moved to the engagement recess over and immediately passes when you release the handle parts back on the locking recess without these engage. 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. In other words, we must handle the parts not so much closer to each other, that already the first approaching again a solution of the circulation timeout occurs without this forecast is ever engaged in the engagement recess. 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. The surgeon must therefore be very careful when closing the handle parts to actually reach the engaging and not accidentally move the handle parts up to the release position of detent and detent recess.
  • [0004] [0004]
    Es ist Aufgabe der Erfindung, ein gattungsgemäßes Instrument so zu verbessern, daß beim Schließen der Griffteile in jedem Falle ein Einrasten der Raste in den Rastrücksprung erfolgt, auch wenn die Griffteile kräftig und über die Rastposition hinausgehend gegeneinander bewegt werden. It is an object of the invention to improve a generic instrument so that when you close the handle parts in each case engagement of the catch occurs in the engagement recess, even if the handle parts are moved vigorously and the detent position also going against each other.
  • [0005] [0005]
    Die Aufgabe wird bei einem chirurgischen Instrument der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß 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, aus der sie beim Öffnen der Griffteile zwangsläufig in den Rastrücksprung eintritt, daß 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 zweiten Griffteil gegenüberliegende Austrittsposition bewegt, und daß 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 vorbei bewegt wird. The problem is solved in a surgical instrument of the type described at the outset according to the invention in that a first control cam is arranged on the first handle part, the catch is brought into a latched position during closing of the handle members against a closing movement limiting stop from which it upon opening grip parts inevitably enters the latching recess, in that the engagement recess carries a second cam which in one of a third cam on the second handle part moves the detent when immersed in the engagement recess from one of the first control cam opposite entry position opposite outlet position, and that the third cam the detent when re-closing the handle parts from the closed position brings out in a disengaged position from which it is moved inevitably when opening the handle parts on the engagement recess over.
  • [0006] [0006]
    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. So it is a restraint of the catch such made that when closing the handle parts they are closed until a stop and that it the latch is moved by the first cam into a position from which it must necessarily enter into the engagement recess when opening the handle parts , 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. In the engagement recess even the notch is moved so far by the cam of the latch that, in a re-closing of the handle parts, the catch re-entering back into the first control curve, but now in a third, arranged adjacent to the first cam control cam, which when the detent subsequent opening of the handle parts laterally leads past the detent recess. 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. The user can therefore, during the closing of the grip parts approach each other this down to a stop and is certain that the subsequent release of the handle parts, the detent enters the engagement recess, thereby locking the handle sections in the closed position. 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. With a new squeezing the handle Share this lock is released, special care, the user must not depend on the closing movement, since it is carried out in each case up to the attack.
  • [0007] [0007]
    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. Such a configuration can be used in all surgical instruments with by a closing movement of two handle portions a tool is to be moved, for example clamps, scissors, pliers, tweezers, etc. It is advantageous if the handle parts via an overload spring on the tools act, so that in the complete closing movement of the handle members the tools if necessary to cover a shorter path to a stop, if they are hindered by lying between the tools parts to a complete closing movement of the tools. Trotzdem kann der Benutzer die Griffteile bis zum vollständigen Schließen gegen ihren Anschlag bewegen. Nevertheless, the user can move the handle parts up to fully close against her stop.
  • [0008] [0008]
    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. In principle it would be possible that the catch is guided through a web-shaped cam fully in their movements, but it is particularly advantageous according to a preferred embodiment, when a spring acts on the latch, which returns the latch when deflected to both sides in a central position. 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. In such an embodiment, it is sufficient to form the control cam as a simple sliding abutting one side of the latch and against the action of the spring to deflect the detent toward one side or the other.
  • [0009] [0009]
    Günstig ist es, wenn die Raste verschwenkbar an dem zweiten Griffteil gelagert ist. It is advantageous if the latch is pivotally mounted on the second handle portion.
  • [0010] [0010]
    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. The converse of this principle is possible, the latch can be fixed and the cam can be movably mounted on the handles, so that in this case gives the relative movement described. Insbesondere kann auch der Einsatz über eine Feder in einer Mittelstellung gehalten und gegen die Federkraft nach beiden Seiten auslenkbar sein. In particular, the use of a spring may be held in a center position and be deflected against the spring force to both sides.
  • [0011] [0011]
    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. The closing movement of the grip members may be limited by a stop which is provided as a separate abutment on the handle parts, in a particularly preferred embodiment, however, the closing movement of the handle parts limiting stop by the first and the third control cam on the one hand and the notch on the other hand formed. 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. When closing thus the latch is pressed against a lowest point of the cam, and thereby the closing movement is limited, at the opening of the handle parts from this stop position, then the latch moves along the control cam in a position in which it enters the latching recess either or is passed in the third cam on the locking recess.
  • [0012] [0012]
    Es wäre aber natürlich auch möglich, den Anschlag einfach an den Griffteilen anzuordnen, so daß die Schließbewegung der Griffteile direkt begrenzt wird. However, it would also be possible to easily locate the stop on the handles so that the closing movement of the handle parts is limited directly. Beispielsweise könnten an beiden Griffteilen entsprechende Anschlagflächen vorgesehen sein, die ein weiteres Zusammenführen der Griffteile begrenzen. For example, corresponding stop surfaces could be provided on the two handle parts, limit the further bringing together of the handle portions.
  • [0013] [0013]
    Es ist vorteilhaft, wenn die erste und die dritte Steuerkurve durch die Seitenflächen eines Vorsprungs gebildet werden, der dem Rastrücksprung gegenüberliegt. It is advantageous if the first and third cam are formed by the side surfaces of a protrusion which is opposite to the engagement recess. Beispielsweise kann dieser Vorsprung keilförmig ausgebildet sein. For example, be wedge-shaped, this projection.
  • [0014] [0014]
    Der Rastrücksprung ist vorzugsweise zum ersten Griffteil hin offen und kann beispielsweise keilförmig ausgebildet sein. The engagement recess is preferably first handle portion towards open and can be formed, for example, wedge-shaped.
  • [0015] [0015]
    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. In a preferred embodiment, it is further contemplated that a slide-on surface is arranged for the latch on the latching recess on its side facing away from the first handle part, which moves this during closing of the handle members against the action of the spring out of its center position.
  • [0016] [0016]
    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. Furthermore, it can be provided that a sliding surface is arranged for the latch on the latching recess on its side facing away from the first handle portion that moves upon opening the handle parts against the action of the spring from its center position. 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. The direction of movement of the latch along the slide-on surfaces is opposite the opening and closing and the condition defined by the spring mid-position is selected so that the latch meets during closing of the handle members from the fully open position of the slide-on surface, which guides the detent in the first cam ,
  • [0017] [0017]
    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 third cam together can have a W-shaped curve, it is advantageous if the first and third cam are rounded at their lowest points.
  • [0018] [0018]
    Es kann vorgesehen sein, daß die Raste die Form eines quer zur Schließrichtung der Griffteile verlaufenden Steges hat. It can be provided that the catch has the form of a transverse to the closing direction of the handle parts web. Dieser Steg kann vorzugsweise am freien Ende eines schwenkbar am zweiten Griffteil gelagerten Haltearmes angeordnet sein. This web can be preferably arranged at the free end of a pivotally mounted on the second handle part holding arm.
  • [0019] [0019]
    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. Furthermore, it can be provided that the engagement recess and optionally the sliding surfaces are part of a crossbar, which is held transversely to the closing direction running on the first handle portion.
  • [0020] [0020]
    Eine besonders günstige Konstruktion ergibt sich, wenn der Rastrücksprung und die erste und die dritte Steuerkurve an einem Einsatz angeordnet sind, der in das erste Griffteil eingesetzt ist. A particularly advantageous construction is obtained when the engagement recess and the first and third cam are arranged on an insert which is inserted into the first handle portion.
  • [0021] [0021]
    Die Griffteile können in beliebiger Weise gegeneinander bewegbar sein, besonders vorteilhaft ist es, wenn die Griffteile gegeneinander verschwenkbar sind. The handle parts can be moved against each other in any desired manner, it is particularly advantageous when the handle parts are mutually pivotable.
  • [0022] [0022]
    Die nachfolgende Beschreibung bevorzugter Ausführungsformen der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. The following description of preferred embodiments of the invention serves in conjunction with the drawings for further explanation. Es zeigen: In the drawings:
  • [0023] [0023]
    1 1 : eine Längsschnittansicht durch einen Handgriff mit zwei gegeneinander verschwenkbaren Griffteilen und einer Umlaufsperre bei vollständig geöffneten Griffteilen; A longitudinal sectional view through a handle having two mutually pivotable handle parts and a circulation check with fully open handle parts;
  • [0024] [0024]
    2 2 : eine Detailansicht des Bereiches der Umlaufsperre beim ersten Teil der Schließbewegung; A detailed view of the range of circulation check the first part of the closing movement;
  • [0025] [0025]
    3 3 : eine Darstellung ähnlich An illustration similar to: 2 2 beim Eintritt der Raste in eine erste Steuerkurve am ersten Griffteil; at the entrance of the catch in a first cam at first handle portion;
  • [0026] [0026]
    4 4 : eine Ansicht ähnlich A view similar to: 2 2 beim Eintritt der Raste in den Rastrücksprung des ersten Griffteils; at the entrance of the catch in the locking recess of the first handle portion;
  • [0027] [0027]
    5 5 : eine Ansicht ähnlich A view similar to: 2 2 mit der Raste in der Verriegelungsstellung im Rastrücksprung; with the latch in the locked position in engagement recess;
  • [0028] [0028]
    6 6 : eine Ansicht ähnlich A view similar to: 2 2 beim Eintritt der Raste in die dritte Steuerkurve am ersten Griffteil; at the entrance of the catch in the third cam on the first handle portion;
  • [0029] [0029]
    7 7 : eine Ansicht ähnlich A view similar to: 2 2 beim Austritt der Raste aus dem Rastrücksprung am ersten Griffteil und at the exit of the catch from the engagement recess on the first handle portion and
  • [0030] [0030]
    8 8 : eine Ansicht ähnlich A view similar to: 2 2 bei der Öffnungsbewegung der Griffteile kurz vor Erreichen der vollständigen Öffnung. during the opening movement of the handle parts shortly before reaching the full opening.
  • [0031] [0031]
    Das in der Zeichnung nur teilweise dargestellte Instrument The instrument is only partially shown in the drawing 1 1 kann beispielsweise ein Rohrschaftinstrument mit zwei Klemmwerkzeugen oder zwei Schneidwerkzeugen sein oder ein Nadelhalter, eine Zange oder ein ähnliches Instrument. For example, a tube shaft with two clamping tools or two cutting tools to be or a needle holder, pliers or a similar instrument. In der Zeichnung ist von diesem Instrument In the drawing of this instrument 1 1 nur ein Handgriff only a handle 2 2 dargestellt, der ein feststehendes zweites Griffteil shown that a stationary second handle portion 3 3 und ein schwenkbar an diesem gelagertes erstes Griffteil and a pivotally mounted at this first handle portion 4 4 umfaßt. includes.
  • [0032] [0032]
    Die beiden Griffteile werden über eine an beiden Griffteilen angreifende Biegefeder The two handle portions are engaging a two handle parts bending spring 5 5 in eine Offenstellung verschwenkt, in der sie maximal voneinander entfernt sind. pivoted into an open position, in which they are maximally apart. Mit dem zweiten Griffteil By the second handle portion 3 3 ist ein Außenrohr is an outer tube 6 6 fest verbunden, in dem eine Betätigungsstange firmly connected, in which an actuating rod 7 7 verschiebbar aufgenommen ist. is slidably received. Diese wird unter Zwischenschaltung einer Überlastschutzfeder This is the interposition of an overload protection spring 8 8 über einen mit dem ersten Griffteil a first to the grip part 4 4 verschwenkbar verbundenen Betätigungshebel pivotally connected actuating lever 9 9 beim Öffnen und Schließen der Griffteile zurück – und vorgeschoben und kann dann am anderen Ende ein Werkzeug betätigen. during opening and closing of the handle parts back - and is advanced and can then operate a tool on the other end.
  • [0033] [0033]
    Am zweiten Griffteil ist in einer Ausnehmung On the second handle portion is in a recess 10 10 um eine parallel zur Schwenkachse des ersten Griffteiles about an axis parallel to the pivot axis of the first handle portion 1 1 verlaufende Schwenkachse ein Rastkörper pivot axis extending a catch body 11 11 verschwenkbar gelagert, der mit einem Haltearm pivotably mounted, the support arm with a 12 12 aus der Ausnehmung from the recess 10 10 hervorsteht und dort mit dem keilförmig zulaufenden Ende des Haltearms projects and there with the wedge-shaped tapered end of the support arm 12 12 auf das erste Griffteil on the first grip part 1 1 weist. has. Der Rastkörper The catch element 11 11 wird durch eine beidseitig abgestützte Schraubenfeder is supported on both sides by a coil spring 13 13 in einer Mittellage gehalten und kann nach beiden Seiten unter Kompression der Schraubenfeder held in a central position and, after both sides under compression of the coil spring 13 13 verschwenkt werden, die Schraubenfeder are pivoted, the helical spring 13 13 führt den Rastkörper takes the catch body 11 11 in eine neutrale Mittellage zurück, wenn keine anderen Drehmomente auf ihn wirken. back to a neutral central position, if no other torques act on it.
  • [0034] [0034]
    An seinem freien Ende trägt der Haltearm At its free end of the arm 12 12 einen parallel zur Schwenkachse des Rastkörpers a parallel to the pivot axis of the latching body 11 11 verlaufenden Steg extending web 14 14 von etwa dreieckförmigem Querschnitt. of approximately triangular cross-section. An seiner dem ersten Griffteil On its first handle portion 4 4 zugewandten Unterseite wird der Steg underside facing is the web 14 14 durch zwei keilförmig zum zweiten Griffteil by two wedge-shaped second handle portion 3 3 hin auseinanderlaufende Anlageflächen towards diverging contact surfaces 15 15 , . 16 16 begrenzt, an seiner Oberseite durch eine schräg ansteigende Rastfläche limited at the top by a rising obliquely latching surface 17 17 . ,
  • [0035] [0035]
    Dem Rastkörper The catch body 11 11 gegenüberliegend ist in eine Ausnehmung opposite is in a recess 18 18 des ersten Griffteils of the first handle portion 4 4 ein Einsatz an insert 19 19 eingesetzt, in den eine im Querschnitt etwa W-förmige Vertiefung used, in which a cross-sectionally approximately W-shaped recess 20 20 eingearbeitet ist. is incorporated. Diese Vertiefung This depression 20 20 ist an den tiefsten Stellen des W-förmigen Querschnittes verrundet, weist also dort einen bogenförmigen Boden auf, und diese beiden bogenförmigen Abschnitte werden in der Mitte von einem etwa keilförmig nach oben abstehenden Vorsprung is rounded at the lowest points of the W-shaped cross-section, so there has an arcuate bottom, and these two arcuate sections are in the middle of an approximately wedge-shaped projecting upward projection 21 21 voneinander getrennt. separated from each other. Auf seiner in der Zeichnung linken, der Schwenklagerung des ersten Griffteils On his left in the drawing, the pivot bearing of the first handle portion 4 4 benachbarten Seite wird der Vorsprung adjacent side is the projection 21 21 durch eine Seitenfläche by a side surface 22 22 begrenzt, die eine erste Steuerkurve ausbildet, auf der rechten Seite durch eine Seitenfläche limited, which forms a first control curve to the right by a side surface 23 23 , die eine dritte Steuerkurve ausbildet. That forms a third control curve. Oberhalb des Vorsprunges Above the projection 21 21 befindet sich ein ebenfalls Teil des Einsatzes There is also a part of the insert 19 19 bildender Quersteg forming transverse web 24 24 , der parallel zum Steg That parallel to the web 14 14 verläuft und der an seiner Unterseite dem Vorsprung runs and at its bottom the projection 21 21 gegenüberliegend einen Rastrücksprung opposite an engagement recess 25 25 trägt, der zum ersten Griffteil carries, the first handle portion 4 4 hin offen ist und eine schräg ansteigende Anlagefläche is open and an upwardly inclined contact surface 26 26 und eine relativ steil zum ersten Griffteil and a relatively steep for the first handle portion 4 4 hin abfallende Anlagefläche sloping bearing surface 27 27 aufweist, die gemeinsam eine zweite Steuerkurve ausbilden. comprises forming a second cam together.
  • [0036] [0036]
    An seinen beiden Außenseiten verläuft der Quersteg At its two outer sides of the transverse web extends 24 24 in Form von zwei sich zum zweiten Griffteil in the form of two for the second handle portion 3 3 hin keilförmig annähernden ebenen Anlageflächen back wedge-shaped approximate planar contact surfaces 28 28 und 29 schräg nach oben, wobei die Spitze des Quersteges and 29 obliquely upward, with the tip of the transverse web 24 24 von der Schwenkachse des ersten Griffteiles from the pivot axis of the first handle portion 4 4 einen größeren Abstand hat als der Rastrücksprung a greater distance than the engagement recess 25 25 , so daß sich der Quersteg So that the transverse web 24 24 ausgehend von der Mitte der W-förmigen Vertiefung starting from the center of the W-shaped recess 20 20 im wesentlichen zu deren rechter Seite hin erstreckt. extends substantially toward the right side thereof.
  • [0037] [0037]
    Wenn die beiden Griffteile When the two handle parts 3 3 und and 4 4 in der vollständig geöffneten Stellung stehen, ist der Steg are in the fully open position, the bridge 14 14 im Abstand von dem Einsatz at a distance from the insert 19 19 angeordnet, der Rastkörper arranged the locking body 11 11 steht in seiner Mittelstellung. is in its central position. Diese Stellung ist in This position is in 1 1 dargestellt. shown.
  • [0038] [0038]
    Beim Schließen der beiden Griffteile When closing the two handle parts 3 3 und and 4 4 trifft der Steg meets the web 14 14 auf die der Schwenkachse des ersten Griffteiles to the pivot axis of the first handle portion 4 4 zugewandte Anlagefläche contact surface facing 28 28 des Quersteges the transverse web 24 24 auf und wird beim weiteren Schließen an dieser Anlagefläche and on the other is close to the contact surface 28 28 entlang geführt, dabei wird der Rastkörper guided along, it is the catch body 11 11 entgegen der Wirkung der Schraubenfeder against the action of the coil spring 13 13 im Uhrzeigersinn verschwenkt, diese Phase der Bewegung ist in pivoted clockwise, this phase of the movement is in 2 2 dargestellt. shown.
  • [0039] [0039]
    Die Anlagefläche The contact surface 28 28 ist so angeordnet, daß bei der weiteren Schließbewegung der Steg is arranged so that in the further closing movement of the web 14 14 in den linken Abschnitt der W-förmigen Vertiefung in the left portion of the W-shaped recess 20 20 eintaucht und dort gegen den Boden der Vertiefung dips and there against the bottom of the well 20 20 stößt, damit wird die Schließbewegung der beiden Griffteile abuts, so that the closing movement of the two handle parts 3 3 und and 4 4 begrenzt. limited. Diese Stellung ist in This position is in 3 3 dargestellt. shown.
  • [0040] [0040]
    Öffnet man ausgehend von dieser Stellung die Griffteile Is opened, starting from this position, the handle parts 3 3 , . 4 4 , so gleitet der Steg So slide the bar 14 14 unter der Wirkung der Schraubenfeder under the action of the coil spring 13 13 an der linken Seitenfläche on the left side surface 22 22 des Vorsprunges of the projection 21 21 entlang, diese Seitenfläche along this side face 22 22 wirkt somit als erste Steuerkurve, die eine Verschwenkung des Rastkörpers thus acts as a first cam, a pivoting of the detent body 11 11 entgegen dem Uhrzeigersinn ermöglicht, so daß der Steg counterclockwise made possible, so that the web 14 14 unterhalb der Anlagefläche below the contact surface 26 26 des Rastrücksprunges the locking rear jump 25 25 positioniert wird, wie dies in is positioned as shown in 5 5 dargestellt ist. is shown. Beim weiteren Öffnen tritt der Steg Upon further open the web occurs 14 14 somit in den Rastrücksprung Thus, in the engagement recess 25 25 ein und gleitet in diesem unter der verschwenkenden Wirkung der Schraubenfeder and slides into this under the pivoting action of the coil spring 13 13 entlang, bis die Anlagefläche along to the contact surface 16 16 des Steges the web 14 14 an der Anlagefläche on the contact surface 27 27 des Rastrücksprunges the locking rear jump 25 25 anschlägt. strikes. Dadurch wird der Steg Thereby, the web 14 14 , der eine Raste ausbildet, im Rastrücksprung Which forms a detent in the engagement recess 25 25 festgelegt und verhindert eine weitere Öffnungsbewegung der beiden Griffteile set and prevents further opening movement of the two handle parts 3 3 , . 4 4 ( ( 5 5 ). ).
  • [0041] [0041]
    Drückt man die beiden Griffteile Pressing the two handle parts 3 3 und and 4 4 erneut gegeneinander, so tritt der Steg again against each other, so shall the web 14 14 nunmehr in die rechte Hälfte der W-förmigen Vertiefung now in the right half of the W-shaped depression 20 20 ein, da der Rastkörper , since the locking body 11 11 durch den Eintritt des Steges by the occurrence of the web 14 14 in den Rastrücksprung in the engagement recess 25 25 unter der Wirkung der Schraubenfeder under the action of the coil spring 13 13 geringfügig nach rechts verschoben worden ist, und hier wird der Steg has been shifted slightly to the right, and here is the web 14 14 an der Seitenfläche on the side surface 23 23 des Vorsprunges of the projection 21 21 entlang so geführt, daß der Rastkörper guided along in such a way that the latching body 11 11 weiter entgegen der Uhrzeigerrichtung verschwenkt wird, und zwar bis zu einer Position, in der der Steg is pivoted further in the counterclockwise direction, namely up to a position in which the web 14 14 nicht mehr dem Rastrücksprung no longer the engagement recess 25 25 gegenüberliegt, sondern der rechten Anlagefläche opposite, but the right-hand abutment surface 29 29 des Quersteges the transverse web 24 24 . , Beim Öffnen der beiden Griffteile When opening the two handle parts 3 3 , . 4 4 gleitet daher der Steg therefore slides the web 14 14 an dieser Anlagefläche at this facility area 29 29 entlang und wird dadurch entgegen dem Uhrzeigersinn verschwenkt, diese Verschwenkung führt über die neutrale Mittelstellung hinaus, so daß der Steg along and is thereby pivoted in the counterclockwise direction, this pivoting causes beyond the neutral position, so that the web 14 14 bei dieser Verschwenkbewegung durch die Schraubenfeder In this pivoting movement by the coil spring 13 13 gegen die Anlagefläche against the contact surface 29 29 angedrückt wird. is pressed. Dieser Bewegungsablauf ist in den This movement is in the 6 6 bis to 8 8 dargestellt. shown.
  • [0042] [0042]
    Sobald der Steg Once the web 14 14 am oberen Ende der Anlagefläche at the upper end of the abutment surface 29 29 angelangt ist, verschwenkt der Rastkörper is reached, the pivoted detent body 11 11 unter der Wirkung der Schraubenfeder under the action of the coil spring 13 13 wieder in die neutrale Mittelstellung, so daß bei erneutem Schließen der Griffteile back to the neutral position so that when a new closing of the handle members 3 3 , . 4 4 der Bewegungsablauf beginnt, wie dies oben erörtert worden ist. the movement begins, as has been discussed above.
  • [0043] [0043]
    Der Benutzer kann also einfach die beiden Griffteile The user can thus simply the two handle parts 3 3 , . 4 4 schließen, bis ein Anschlag erreicht ist, und dann kurz loslassen, dadurch erfolgt eine Verriegelung in der Schließstellung, durch erneutes Zusammendrücken kann diese Verriegelung wieder gelöst werden. close until a stop is reached, and then briefly release, thus is locked in the closed position, by re-compressing this lock can be released again. Dabei muß nicht darauf geachtet werden, daß bei der Schließbewegung die Schließposition nicht überfahren werden darf, dies ist bei dieser Konstruktion nicht möglich. It must not be taken to ensure that in the closing movement, the closing position may not be over, this is not possible in this design.
Citas de patentes
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Clasificaciones
Clasificación internacionalA61B17/28
Clasificación cooperativaA61B17/2833, A61B2017/2946, A61B17/29
Clasificación europeaA61B17/28D6, A61B17/29
Eventos legales
FechaCódigoEventoDescripción
21 Oct 2004OP8Request for examination as to paragraph 44 patent law
16 Oct 20088127New person/name/address of the applicant
Owner name: AESCULAP AG, 78532 TUTTLINGEN, DE
9 Jul 20098364No opposition during term of opposition
28 Jul 2015R082Change of representative
Representative=s name: HOEGER, STELLRECHT & PARTNER PATENTANWAELTE MB, DE