WO2011060888A1 - Surgical hand-instrument comprising actuating rod - Google Patents

Surgical hand-instrument comprising actuating rod Download PDF

Info

Publication number
WO2011060888A1
WO2011060888A1 PCT/EP2010/006786 EP2010006786W WO2011060888A1 WO 2011060888 A1 WO2011060888 A1 WO 2011060888A1 EP 2010006786 W EP2010006786 W EP 2010006786W WO 2011060888 A1 WO2011060888 A1 WO 2011060888A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft tube
sleeve
actuating rod
hand instrument
end effector
Prior art date
Application number
PCT/EP2010/006786
Other languages
German (de)
French (fr)
Inventor
Thomas Aue
Original Assignee
Olympus Winter & Ibe Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Winter & Ibe Gmbh filed Critical Olympus Winter & Ibe Gmbh
Publication of WO2011060888A1 publication Critical patent/WO2011060888A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1402—Probes for open surgery

Definitions

  • the invention relates to a surgical hand instrument referred to in the preamble of claim 1 Art.
  • Such a hand instrument is known from DE 20 2006 002 796 Ul.
  • the sleeve is formed in the known instrument as an insulating sleeve and serves to prevent any contact between the shaft tube and actuating rod a short circuit, since these are connected to the trained as a bipolar forceps hand instrument to different voltage poles.
  • the hand instrument is designed as a disposable instrument which is supplied sterile and disposed of after use, there are no problems with the sleeve located in the shaft tube.
  • the hand instrument if the hand instrument is to be reusable, then it must be completely cleanable and sterilizable, even on all inner surfaces.
  • Such an instrument can be easily cleaned and sterilized only when the sleeve is pulled out of the shaft tube. That is not always possible.
  • manual instruments with a curved shaft and rotatably arranged end effector disassembly for cleaning purposes is very difficult to achieve.
  • CONFIRMATION COPY In such difficult to disassemble hand instruments helps one so that for cleaning the shaft tube with cleaning and sterilizing liquids is rinsed longitudinally. For this purpose, a flushing connection is provided on the shaft tube.
  • the object of the present invention is to improve the cleanability of a generic hand instrument.
  • the sleeve is sealed at its ends against the wall, which it rests with a seal.
  • the adjacent wall may, as in the above-described prior art, be the inner wall of the shaft tube or the outer wall of the actuating rod, if the sleeve is to fit snugly.
  • the gap between the sleeve and the wall, which rests against the sleeve is thus sealed at both ends in this construction, so that nothing can penetrate into the gap, which would have to be cleaned or disinfected.
  • An only one-sided flushing the sleeve thus sufficient for proper cleaning and disinfection.
  • a seal at the ends of the sleeve is sufficient.
  • a full-surface bonding of the sleeve which would be much more expensive, is not required. It also simplify the assembly and disassembly.
  • the seal at the ends of the sleeve may be formed in different ways, for example as a ring bond, but is advantageous, according to claim 2, designed as a seated in a groove O-ring. This results in a simple construction, in particular a very easy way for assembly and disassembly.
  • the sleeve may, as in the aforementioned prior art, be formed as an insulating sleeve or advantageously, according to claim 3, as a sliding sleeve, which reduces the frictional resistance between the actuating rod and the shaft tube in contact.
  • This friction plays no role in straight shank, as shown in the prior art mentioned above, but in hand instruments with a curved shaft, as they have recently been increasingly used, especially in laparoscopy.
  • the actuating forces transmitted by the actuating rod such as e.g. Closing forces of a pair of pliers, lead to the fact that on a curved piece of the shaft, the actuating rod with great force is laid laterally against the shaft tube.
  • the sleeve according to claim 4 made of PEEK (Polyeti eretherketon) formed, a plastic with very low friction, which is characterized mainly by proven compatibility in the medical field.
  • the hand instrument according to the invention is advantageously produced according to claim 5, characterized in that first the sleeve is inserted into the still straight shaft tube and then the shaft tube is bent. This simplifies the production significantly.
  • Fig. 2 is a section along line 2 - 2 in Fig. 1 and
  • Fig. 3 is a section along line 3 - 3 in Fig. 2nd
  • Fig. 1 shows a hand instrument 1 according to the invention with an elongate, curved shaft tube 2 made of rigid material, e.g. Stole.
  • an end effector 3 is arranged, which has two mutually pivotally arranged branches, which form a pair of scissors or pliers depending on the training.
  • a handling unit 4 is arranged, which is actuated via movable grips 5 for actuating the end effector 3.
  • the end effector 3 is rotatably mounted to the shaft tube 2 with respect to the axis thereof and rotatably actuated by the handling unit 4 by means of a rotary ring 6.
  • Fig. 2 shows a cross section in the distal end region just before the end effector 3.
  • the actuating rod 7 is connected in a manner not shown in the handling unit 4 for actuation. In relative movement of the grips 5, the actuating rod 7 is moved longitudinally in the shaft tube 2.
  • the actuating rod 7 is in a manner not shown with the end effector 3 in engagement to adjust one or both of the branches of the end effector 3 relative to each other.
  • the actuating rod 7 is connected so that it causes a closing of the forceps or heavy industries at the end effector 3 upon retraction, ie when moving in the proximal direction.
  • the actuating rod 7 is preferably made of PEEK (polyetheretherketone) existing sleeve 8, which is formed in the embodiment with its outer wall of the inner wall of the shaft tube 2 fitting.
  • PEEK polyetheretherketone
  • it can also be designed to be in contact with the actuating rod 7.
  • the system of the sleeve 8 on the inner wall of the shaft tube 2 or the actuating rod 7 is so tight that a possible shift-safe hold arises, but the sleeve during assembly still in the shaft tube 2 can be inserted.
  • the sleeve 8 need not be formed over the entire length of the shaft tube 2, but may, for example, at the cut with the line 2 - 2 point of the shaft tube 2, ie shortly before the distal end, end, as shown in FIG.
  • the shaft tube 2 Since the shaft tube 2 is formed bent in the embodiment, it comes in power transmission via the actuating rod 7 to a system of the actuating rod 7 against the shaft tube 2. This system is prevented by the intermediate sleeve 8. This must therefore be present in particular at the bending points of the shaft tube 2.
  • the sleeve 8 prevents contact between the actuating rod 7 and the shaft tube 2. It can, with insulating training, avoid electrical contact, if, for example, as in the aforementioned prior art, the shaft tube 2 and the actuating rod 7 formed as an electrical conductor are connected to different voltages.
  • the hand instrument 1, which is very difficult to disassemble, for cleaning and disinfection is provided with a flushing connection 9, via which flushing fluid can be brought into the interior of the shaft tube 2.
  • the sleeve 8 ends at the proximal end of the shaft tube 2 at a distance from the flushing From there so rinsing liquid can penetrate into the annular space 10 between the actuating rod 7 and sleeve 8 and flow in this annulus to the distal end of the shaft tube 2 to flow out there through the end effector 3, which is still cleaned and disinfected.
  • the gap 11, between the shaft tube 2 and the sleeve 8 does not flow through, since the sleeve 8 in the exemplary embodiment, the shaft tube 2 fits tightly. In this gap 11 so can not be cleaned.
  • the invention therefore provides to seal the actuating rod 7 at its ends against the shaft tube 2 with a seal.
  • This is formed in the illustrated preferred embodiment as an O-ring 12, which is arranged in the illustrated annular groove of the sleeve 8.
  • the sleeve 8 closely engages the actuating rod 7, so the O-ring 12 receiving annular groove on the inside of the sleeve 8 would be arranged.
  • the end effector 3 on two mutually movable branches, which form a pair of pliers or scissors depending on the training.
  • One of the branches can also be fixed.
  • the end effector may also be integrally formed e.g. be formed as a surgical hook, which is longitudinally displaceable and rotatable by means of the actuating rod 7.
  • the end effector may be provided for use in high frequency surgery with one or more electrodes connected in mono- or bipolar to a high frequency generator.
  • the shaft tube 2 is best prepared in a straight shape and then bent after the sleeve was inserted into the first still straight shaft tube 2.

Abstract

The invention relates to a surgical hand-instrument (1) comprising an elongated rigid shaft tube (2), on the distal end of which at least one partly movable end effector (3) lies and on the proximal end of which a handling unit (4) lies. An actuating rod (7) can be driven to move longitudinally using the handling unit. The actuating rod (7) is mounted in the shaft tube (2) in a longitudinally movable manner and can be coupled to the end effector (3) at the distal end of said actuating rod in order to move the end effector, wherein a casing (8) that surrounds the actuating rod (7) lies in the shaft tube (2). The invention is characterized in that the casing (8) is sealed on both end regions thereof with respect to the inner wall of the shaft tube (2) or to the outer wall of the actuating rod (7) with a seal (12) in each case.

Description

Chirurgisches Handinstrument mit Betätigungsstange  Surgical hand instrument with operating rod
Die Erfindung betrifft ein chirurgisches Handinstrument der im Oberbegriff des Anspruchs 1 genannten Art. The invention relates to a surgical hand instrument referred to in the preamble of claim 1 Art.
Ein solches Handinstrument ist aus der DE 20 2006 002 796 Ul bekannt. Die Hülse ist bei dem bekannten Instrument als Isolierhülse ausgebildet und dient dazu, bei etwaigen Berührungen zwischen Schaftrohr und Betätigungsstange einen Kurzschluss zu verhindern, da diese bei dem als bipolare Zange ausgebildeten Handinstrument an unterschiedliche Spannungspole angeschlossen sind. Such a hand instrument is known from DE 20 2006 002 796 Ul. The sleeve is formed in the known instrument as an insulating sleeve and serves to prevent any contact between the shaft tube and actuating rod a short circuit, since these are connected to the trained as a bipolar forceps hand instrument to different voltage poles.
Wenn das Handinstrument als Einmalinstrument ausgebildet ist, das steril angeliefert und nach Benutzung entsorgt wird, so gibt es keine Probleme mit der in dem Schaftrohr liegenden Hülse. Soll das Handinstrument jedoch wiederverwendbar ausgebildet sein, dann muss es vollständig, und zwar auch an allen inneren Oberflächen, reinigbar und sterilisierbar sein. Ein solches Instrument läßt sich problemlos nur reinigen und sterilisieren, wenn dazu die Hülse aus dem Schaftrohr herausgezogen wird. Das ist aber nicht immer möglich. Z.B. bei Handinstrumenten mit gebogenem Schaft und daran drehbar angeordnetem Endeffektor ist eine Zerlegung zu Reinigungszwecken nur sehr schwer realisierbar. If the hand instrument is designed as a disposable instrument which is supplied sterile and disposed of after use, there are no problems with the sleeve located in the shaft tube. However, if the hand instrument is to be reusable, then it must be completely cleanable and sterilizable, even on all inner surfaces. Such an instrument can be easily cleaned and sterilized only when the sleeve is pulled out of the shaft tube. That is not always possible. For example, in manual instruments with a curved shaft and rotatably arranged end effector disassembly for cleaning purposes is very difficult to achieve.
BESTÄTIGUNGSKOPIE Bei derart schwierig zerlegbaren Handinstrumenten hilft man sich damit, dass zur Reinigung das Schaftrohr mit Reinigungs- und Sterilisierungsflüssigkeiten längsdurchspült wird. Dazu ist am Schaftrohr ein Spülanschluss vorgesehen. CONFIRMATION COPY In such difficult to disassemble hand instruments helps one so that for cleaning the shaft tube with cleaning and sterilizing liquids is rinsed longitudinally. For this purpose, a flushing connection is provided on the shaft tube.
Bei der inneren Längsdurchspülung des Schaftrohres ergeben sich jedoch Probleme mit der Hülse. Liegt diese mit beiderseitigem Abstand zum Betätigungsdraht und zum Schaftrohr, so kann die Hülse auf beiden Seiten umströmt werden. Liegt sie jedoch wie bei der eingangs zitierten bekannten Konstruktion dem Schaftrohr eng an, so wird der Spalt zwischen Hülse und Schaftrohr nicht ausreichend durchspült und somit nicht ausreichend gereinigt. In the inner longitudinal flushing of the shaft tube, however, problems arise with the sleeve. If this is at a mutual distance from the actuating wire and the shaft tube, then the sleeve can be flowed around on both sides. If, however, as in the above-cited known construction, the shaft tube fits snugly, the gap between the sleeve and the shaft tube is not sufficiently flushed out and thus not adequately cleaned.
Die Aufgabe der vorliegenden Erfindung besteht darin, bei einem gattungsgemäßen Handinstrument die Reinigbarkeit zu verbessern. The object of the present invention is to improve the cleanability of a generic hand instrument.
Diese Aufgabe wird mit den Merkmalen des Kennzeichnungsteiles des Anspruches 1 gelöst. This object is achieved with the features of the characterizing part of claim 1.
Erfindungsgemäß ist die Hülse an ihren Enden gegenüber der Wand, der sie anliegt, mit einer Dichtung abgedichtet. Die anliegende Wand kann, wie beim eingangs geschilderten Stand der Technik, die Innenwand des Schaftrohres sein oder auch die Außenwand der Betätigungsstange, falls die Hülse dieser eng anliegen soll. Der Spalt zwischen der Hülse und der Wand, der die Hülse anliegt, ist bei dieser Konstruktion also an beiden Enden abgedichtet, so dass in den Spalt nichts eindringen kann, das gereinigt oder desinfiziert werden müsste. Eine nur einseitige Umspülung der Hülse reicht somit zur einwandfreien Reinigung und Desinfektion aus. Eine Dichtung an den Enden der Hülse reicht völlig aus. Ein vollflächiges Verkleben der Hülse, was wesentlich aufwendiger wäre, ist nicht erforderlich. Es vereinfachen sich also auch die Montage und Demontage. Die Dichtung an den Enden der Hülse kann auf unterschiedliche Weise, beispielsweise als Ringverklebung, ausgebildet sein, ist vorteilhaft jedoch, gemäß Anspruch 2, als in einer Nut sitzender O-Ring ausgebildet. Dadurch ergibt sich eine einfache Konstruktion, insbesondere eine sehr einfache Möglichkeit für die Montage und Demontage. According to the invention, the sleeve is sealed at its ends against the wall, which it rests with a seal. The adjacent wall may, as in the above-described prior art, be the inner wall of the shaft tube or the outer wall of the actuating rod, if the sleeve is to fit snugly. The gap between the sleeve and the wall, which rests against the sleeve is thus sealed at both ends in this construction, so that nothing can penetrate into the gap, which would have to be cleaned or disinfected. An only one-sided flushing the sleeve thus sufficient for proper cleaning and disinfection. A seal at the ends of the sleeve is sufficient. A full-surface bonding of the sleeve, which would be much more expensive, is not required. It also simplify the assembly and disassembly. The seal at the ends of the sleeve may be formed in different ways, for example as a ring bond, but is advantageous, according to claim 2, designed as a seated in a groove O-ring. This results in a simple construction, in particular a very easy way for assembly and disassembly.
Die Hülse kann, wie beim eingangs erwähnten Stand der Technik, als Isolierhülse ausgebildet sein oder vorteilhaft, gemäß Anspruch 3, als Gleithülse, die den Reibungswiderstand zwischen der Betätigungstange und dem Schaftrohr bei Berührung verringert. Diese Reibung spielt bei geradem Schaft, wie im eingangs erwähnten Stand der Technik dargestellt, keine Rolle, wohl aber bei Handinstrumenten mit gebogenem Schaft, wie sie neuerdings insbesondere in der Laparoskopie zunehmend verwendet werden. Die von der Betätigungsstange übertragenen Betätigungskräfte, wie z.B. Schließkräfte einer Zange, führen dazu, dass an einem gebogenen Stück des Schaftes, sich die Betätigungsstange mit großer Kraft seitlich gegen das Schaftrohr legt. Es kommt dort dann zu erheblicher Reibung, was zu schwergängiger und unpräziser Bedienung führt. Vorteilhaft ist die Hülse, gemäß Anspruch 4, aus PEEK (Polyeti eretherketon) ausgebildet, einem Kunststoff mit sehr niedrigen Reibwerten, der sich vor allem durch bewährte Verträglichkeit im medizinischen Bereich auszeichnet. The sleeve may, as in the aforementioned prior art, be formed as an insulating sleeve or advantageously, according to claim 3, as a sliding sleeve, which reduces the frictional resistance between the actuating rod and the shaft tube in contact. This friction plays no role in straight shank, as shown in the prior art mentioned above, but in hand instruments with a curved shaft, as they have recently been increasingly used, especially in laparoscopy. The actuating forces transmitted by the actuating rod, such as e.g. Closing forces of a pair of pliers, lead to the fact that on a curved piece of the shaft, the actuating rod with great force is laid laterally against the shaft tube. It then comes to considerable friction, which leads to stiff and imprecise operation. Advantageously, the sleeve according to claim 4, made of PEEK (Polyeti eretherketon) formed, a plastic with very low friction, which is characterized mainly by proven compatibility in the medical field.
Das erfindungsgemäße Handinstrument wird vorteilhaft gemäß Anspruch 5 dadurch hergestellt, dass zunächst die Hülse in das noch gerade Schaftrohr eingeschoben und dann das Schaftrohr gebogen wird. Dadurch vereinfacht sich die Herstellung wesentlich. The hand instrument according to the invention is advantageously produced according to claim 5, characterized in that first the sleeve is inserted into the still straight shaft tube and then the shaft tube is bent. This simplifies the production significantly.
In der Zeichnung ist die Erfindung beispielsweise und schematisch dargestellt. Es zeigen: Fig. 1 eine Seitenansicht eines erfindungsgemäßen Handinstrumentes, In the drawing, the invention is shown for example and schematically. Show it: 1 is a side view of a hand instrument according to the invention,
Fig. 2 einen Schnitt nach Linie 2 - 2 in Fig. 1 und Fig. 2 is a section along line 2 - 2 in Fig. 1 and
Fig. 3 einen Schnitt nach Linie 3 - 3 in Fig. 2. Fig. 3 is a section along line 3 - 3 in Fig. 2nd
Fig. 1 zeigt ein erfindungsgemäßes Handinstrument 1 mit einem langgestreckten, gebogenen Schaftrohr 2 aus starrem Material, z.B. Stahl. Am distalen Ende des Schaftrohres 2 ist ein Endeffektor 3 angeordnet, der zwei gegeneinander schwenkbar angeordnete Branchen aufweist, die je nach Ausbildung eine Schere oder eine Zange bilden. Fig. 1 shows a hand instrument 1 according to the invention with an elongate, curved shaft tube 2 made of rigid material, e.g. Stole. At the distal end of the shaft tube 2, an end effector 3 is arranged, which has two mutually pivotally arranged branches, which form a pair of scissors or pliers depending on the training.
Am proximalen Ende des Schaftrohres 2 ist eine Handhabungseinheit 4 angeordnet, die über bewegbare Griffstücke 5 zur Betätigung des Endeffektors 3 betätigbar ist. Der Endeffektor 3 ist dem Schaftrohr 2 gegenüber um dessen Achse drehbar gelagert und von der Handhabungseinheit 4 her mittels eines Drehringes 6 drehbetätigbar. At the proximal end of the shaft tube 2, a handling unit 4 is arranged, which is actuated via movable grips 5 for actuating the end effector 3. The end effector 3 is rotatably mounted to the shaft tube 2 with respect to the axis thereof and rotatably actuated by the handling unit 4 by means of a rotary ring 6.
Fig. 2 zeigt einen Querschnitt im distalen Endbereich kurz vor dem Endeffektor 3. Man sieht das Schaftrohr 2 und eine Betätigungsstange 7. Die Betätigungsstange 7 ist in nicht dargestellter Weise in der Handhabungseinheit 4 zur Betätigung angeschlossen. Bei relativer Bewegung der Griffstücke 5, wird die Betätigungsstange 7 im Schaftrohr 2 längs verschoben. Am distalen Ende steht die Betätigungsstange 7 in nicht dargestellter Weise mit dem Endeffektor 3 in Eingriff, um eine oder beide der Branchen des Endeffektors 3 relativ zueinander zu verstellen. Üblicherweise ist die Betätigungsstange 7 derart angeschlossen, dass sie bei Zurückziehen, also bei Bewegung in proximaler Richtung, ein Schließen der Zangen- oder Schwerenbranchen am Endeffektor 3 bewirkt. Wie die beiden Schnittdarstellungen der Fig. 2 und 3 zeigen, ist zwischen dem Schaftrohr 2 und der Betätigungsstange 7 eine vorzugsweise aus PEEK (Poly- etheretherketon) bestehende Hülse 8 angeordnet, die im Ausführungsbeispiel mit ihrer Außenwand der Innenwand des Schaftrohres 2 anliegend ausgebildet ist. Sie kann jedoch auch der Betätigungsstange 7 anliegend ausgebildet sein. Die Anlage der Hülse 8 an der Innenwand des Schaftrohres 2 oder der Betätigungsstange 7 ist derart eng, dass ein möglichst verschiebungssicherer Halt entsteht, die Hülse aber bei der Montage noch in das Schaftrohr 2 einschiebbar ist. Fig. 2 shows a cross section in the distal end region just before the end effector 3. One sees the shaft tube 2 and an actuating rod 7. The actuating rod 7 is connected in a manner not shown in the handling unit 4 for actuation. In relative movement of the grips 5, the actuating rod 7 is moved longitudinally in the shaft tube 2. At the distal end of the actuating rod 7 is in a manner not shown with the end effector 3 in engagement to adjust one or both of the branches of the end effector 3 relative to each other. Usually, the actuating rod 7 is connected so that it causes a closing of the forceps or heavy industries at the end effector 3 upon retraction, ie when moving in the proximal direction. As the two sectional views of Figs. 2 and 3 show, between the shaft tube 2 and the actuating rod 7 is preferably made of PEEK (polyetheretherketone) existing sleeve 8, which is formed in the embodiment with its outer wall of the inner wall of the shaft tube 2 fitting. However, it can also be designed to be in contact with the actuating rod 7. The system of the sleeve 8 on the inner wall of the shaft tube 2 or the actuating rod 7 is so tight that a possible shift-safe hold arises, but the sleeve during assembly still in the shaft tube 2 can be inserted.
Die Hülse 8 muss nicht über die gesamte Länge des Schaftrohres 2 ausgebildet sein, sondern kann beispielsweise an der mit der Linie 2 - 2 geschnittenen Stelle des Schaftrohres 2, also kurz vor dem distalen Ende, enden, wie dies die Fig. 3 zeigt. The sleeve 8 need not be formed over the entire length of the shaft tube 2, but may, for example, at the cut with the line 2 - 2 point of the shaft tube 2, ie shortly before the distal end, end, as shown in FIG.
Da das Schaftrohr 2 im Ausführungsbeispiel gebogen ausgebildet ist, kommt es bei Kraftübertragung über die Betätigungsstange 7 zu einer Anlage der Betätigungsstange 7 gegen das Schaftrohr 2. Diese Anlage wird durch die dazwischen liegende Hülse 8 verhindert. Diese muss also insbesondere an den Biegestellen des Schaftrohres 2 vorhanden sein. Since the shaft tube 2 is formed bent in the embodiment, it comes in power transmission via the actuating rod 7 to a system of the actuating rod 7 against the shaft tube 2. This system is prevented by the intermediate sleeve 8. This must therefore be present in particular at the bending points of the shaft tube 2.
Die Hülse 8 verhindert Berührungen zwischen der Betätigungsstange 7 und dem Schaftrohr 2. Sie kann, bei isolierender Ausbildung, einen elektrischen Kontakt vermeiden, wenn beispielsweise, wie beim eingangs genannten, bekannten Stand der Technik, das Schaftrohr 2 und die Betätigungsstange 7 als elektrische Leiter ausgebildet sind, die an unterschiedliche Spannungen angeschlossen sind. The sleeve 8 prevents contact between the actuating rod 7 and the shaft tube 2. It can, with insulating training, avoid electrical contact, if, for example, as in the aforementioned prior art, the shaft tube 2 and the actuating rod 7 formed as an electrical conductor are connected to different voltages.
Im dargestellten Ausführungsbeispiel ist das nur sehr schwer zerlegbare Handinstrument 1 zur Reinigung und Desinfektion mit einem Spülanschluss 9 versehen, über den Spülflüssigkeit ins Innere des Schaftrohres 2 gebracht werden kann. Die Hülse 8 endet am proximalen Ende des Schaftrohres 2 im Abstand zum Spülan- schluss 9. Von dort kann also Spülflüssigkeit in den Ringraum 10 zwischen Betätigungsstange 7 und Hülse 8 eindringen und in diesem Ringraum bis zum distalen Ende des Schaftrohres 2 strömen, um dort durch den Endeffektor 3 auszuströmen, wobei auch dieser noch gereinigt und desinfiziert wird. In the illustrated embodiment, the hand instrument 1, which is very difficult to disassemble, for cleaning and disinfection is provided with a flushing connection 9, via which flushing fluid can be brought into the interior of the shaft tube 2. The sleeve 8 ends at the proximal end of the shaft tube 2 at a distance from the flushing From there so rinsing liquid can penetrate into the annular space 10 between the actuating rod 7 and sleeve 8 and flow in this annulus to the distal end of the shaft tube 2 to flow out there through the end effector 3, which is still cleaned and disinfected.
Dabei wird jedoch der Spalt 11, zwischen dem Schaftrohr 2 und der Hülse 8, nicht durchströmt, da die Hülse 8 im Ausführungsbeispiel dem Schaftrohr 2 eng anliegt. In diesem Spalt 11 kann also nicht gereinigt werden. Die Erfindung sieht daher vor, die Betätigungsstange 7 an ihren Enden gegen das Schaftrohr 2 mit einer Dichtung abzudichten. Diese ist im dargestellten bevorzugten Ausführungsbeispiel als O-Ring 12 ausgebildet, der in der dargestellten Ringnut der Hülse 8 angeordnet ist. In this case, however, the gap 11, between the shaft tube 2 and the sleeve 8, does not flow through, since the sleeve 8 in the exemplary embodiment, the shaft tube 2 fits tightly. In this gap 11 so can not be cleaned. The invention therefore provides to seal the actuating rod 7 at its ends against the shaft tube 2 with a seal. This is formed in the illustrated preferred embodiment as an O-ring 12, which is arranged in the illustrated annular groove of the sleeve 8.
Wenn bei anderer Ausführungsform die Hülse 8 eng der Betätigungsstange 7 anliegt, so wäre die den O-Ring 12 aufnehmende Ringnut auf der Innenseite der Hülse 8 anzuordnen. If, in another embodiment, the sleeve 8 closely engages the actuating rod 7, so the O-ring 12 receiving annular groove on the inside of the sleeve 8 would be arranged.
Bei der dargestellten Ausführungsform des Handinstrumentes 1 weist der Endeffektor 3 zwei gegeneinander bewegbare Branchen auf, die je nach Ausbildung eine Zange oder eine Schere bilden. Eine der Branchen kann auch feststehend sein. Alternativ kann bei einer nichtdargestellten Ausführungsform der Endeffektor auch einstückig z.B. als chirurgischer Haken ausgebildet sein, der mittels der Betätigungstange 7 längsverschiebbar und drehbar ist. In the illustrated embodiment of the hand instrument 1, the end effector 3 on two mutually movable branches, which form a pair of pliers or scissors depending on the training. One of the branches can also be fixed. Alternatively, in an unillustrated embodiment, the end effector may also be integrally formed e.g. be formed as a surgical hook, which is longitudinally displaceable and rotatable by means of the actuating rod 7.
Der Endeffektor kann zur Verwendung in der Hochfrequenzchirurgie mit ein oder mehreren Elektroden versehen sein, die mono- oder bipolar an einen Hochfrequenzgenerator angeschlossen sind. Bei der Herstellung des in Fig. 1 dargestellten Handinstrumentes wird das Schaftrohr 2 am besten in gerader Form hergestellt und dann erst gebogen, nachdem die Hülse in das zunächst noch gerade Schaftrohr 2 eingeschoben wurde. The end effector may be provided for use in high frequency surgery with one or more electrodes connected in mono- or bipolar to a high frequency generator. In the manufacture of the hand instrument shown in Fig. 1, the shaft tube 2 is best prepared in a straight shape and then bent after the sleeve was inserted into the first still straight shaft tube 2.

Claims

PATENTANSPRÜCHE: CLAIMS:
1. Chirurgisches Handinstrument (1) mit einem langgestreckten, starren Schaftrohr (2), an dessen distalem Ende ein wenigstens teilweise bewegbarer Endeffektor (3) angeordnet ist, an dessen proximalem Ende eine Handhabungseinheit (4) angeordnet ist, mit der eine Betätigungsstange (7) zur Längsverschiebung antreibbar ist, die im Schaftrohr (2) längsverschiebbar gelagert und an ihrem distalen Ende mit dem Endeffektor (3) zu dessen Bewegung gekoppelt ist, wobei im Schaftrohr (2) eine die Betätigungsstange (7) umgebende Hülse (8) angeordnet ist, dadurch gekennzeichnet, dass die Hülse (8) an ihren beiden Endbereichen jeweils zu der Innenwand des Schaftrohres (2) oder der Außenwand der Betätigungsstange (7) hin mit einer Dichtung (12) abgedichtet ist. 1. Surgical hand instrument (1) with an elongate, rigid shaft tube (2), at the distal end of an at least partially movable end effector (3) is arranged at the proximal end of a handling unit (4) is arranged, with an actuating rod (7 ) is longitudinally displaceable, which is longitudinally displaceably mounted in the shaft tube (2) and at its distal end to the end effector (3) coupled to the movement, wherein in the shaft tube (2) a sleeve (8) surrounding the actuating rod (7) is arranged , characterized in that the sleeve (8) at its two end regions in each case to the inner wall of the shaft tube (2) or the outer wall of the actuating rod (7) is sealed with a seal (12).
2. Handinstrument nach Anspruch 1, dadurch gekennzeichnet, dass die Dichtung als O-Ring (12) aus elastischem Material ausgebildet ist, der in einer Umfangsnut in der Hülse (8) gelagert ist. 2. Hand instrument according to claim 1, characterized in that the seal is formed as an O-ring (12) made of elastic material which is mounted in a circumferential groove in the sleeve (8).
3. Handinstrument nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Hülse (8) aus gut gleitfähigem Kunststoff besteht. 3. Hand instrument according to one of the preceding claims, characterized in that the sleeve (8) consists of good sliding plastic.
4. Handinstrument nach Anspruch 3, dadurch gekennzeichnet, dass die Hülse (8) aus PEEK besteht. 4. Hand instrument according to claim 3, characterized in that the sleeve (8) consists of PEEK.
5. Verfahren zur Herstellung eines Handinstrumentes (1) nach einem der vorhergehenden Ansprüche, mit gebogenem Schaftrohr (2), dadurch gekennzeichnet, dass zunächst die Hülse (8) in das Schaftrohr (2) eingeschoben und dieses dann gebogen wird. 5. A method for producing a hand instrument (1) according to one of the preceding claims, with a bent shaft tube (2), characterized in that first the sleeve (8) inserted into the shaft tube (2) and this is then bent.
PCT/EP2010/006786 2009-11-19 2010-11-08 Surgical hand-instrument comprising actuating rod WO2011060888A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009053417A DE102009053417A1 (en) 2009-11-19 2009-11-19 Surgical hand instrument with operating rod
DE102009053417.2 2009-11-19

Publications (1)

Publication Number Publication Date
WO2011060888A1 true WO2011060888A1 (en) 2011-05-26

Family

ID=43431998

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/006786 WO2011060888A1 (en) 2009-11-19 2010-11-08 Surgical hand-instrument comprising actuating rod

Country Status (2)

Country Link
DE (1) DE102009053417A1 (en)
WO (1) WO2011060888A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014115487A1 (en) 2014-10-23 2016-04-28 Olympus Winter & Ibe Gmbh Hand instrument for surgical procedures

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5013312A (en) * 1990-03-19 1991-05-07 Everest Medical Corporation Bipolar scalpel for harvesting internal mammary artery
DE4311770A1 (en) * 1992-04-09 1993-10-28 Olympus Optical Co Tweezers for use in medical surgery - has actuating shaft acting between movable part of handle and gripper, by back and forth movement, gripper is opened and closed
US5620459A (en) * 1992-04-15 1997-04-15 Microsurge, Inc. Surgical instrument
DE19741054C1 (en) * 1997-09-18 1998-12-17 Aesculap Ag & Co Kg Surgical tubular shaft instrument
DE202006002796U1 (en) 2005-03-16 2006-04-20 Olympus Winter & Ibe Gmbh Endoscopic instrument with two bipolar front elements, comprising one element designed with fork-shaped rear end

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6015426A (en) * 1994-07-13 2000-01-18 Tnco, Inc. Rotatable linkage for micro-instrument
DE10122369C2 (en) * 2001-05-09 2003-08-21 Aesculap Ag & Co Kg Surgical instrument

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5013312A (en) * 1990-03-19 1991-05-07 Everest Medical Corporation Bipolar scalpel for harvesting internal mammary artery
DE4311770A1 (en) * 1992-04-09 1993-10-28 Olympus Optical Co Tweezers for use in medical surgery - has actuating shaft acting between movable part of handle and gripper, by back and forth movement, gripper is opened and closed
US5620459A (en) * 1992-04-15 1997-04-15 Microsurge, Inc. Surgical instrument
DE19741054C1 (en) * 1997-09-18 1998-12-17 Aesculap Ag & Co Kg Surgical tubular shaft instrument
DE202006002796U1 (en) 2005-03-16 2006-04-20 Olympus Winter & Ibe Gmbh Endoscopic instrument with two bipolar front elements, comprising one element designed with fork-shaped rear end

Also Published As

Publication number Publication date
DE102009053417A1 (en) 2011-06-01

Similar Documents

Publication Publication Date Title
EP1937174A2 (en) Electrosurgical instrument
EP1052945B1 (en) Tubular medical instrument
EP1701661B1 (en) Medical cutting and/or holding instrument
EP2769682B1 (en) Endoscopic instrument and shaft for an endoscopic instrument
DE102011007122A1 (en) Tool for a micro-invasive-surgical instrument
EP2281516B1 (en) Surgical instrument
DE102014117393A1 (en) Turnable and bendable medical instrument
WO2011060888A1 (en) Surgical hand-instrument comprising actuating rod
DE102009037613A1 (en) Electrosurgical instrument
EP3167824B1 (en) Surgical instrument which can be disassembled
DE102015008872A1 (en) Tongue-free jaw mechanism
EP3158956B1 (en) Microsurgical instrument, handle and motor block for a microsurgical instrument
DE102014012146A1 (en) Tubular shaft instrument with a tubular shaft and a flushing connection
DE102009022119A1 (en) Endoscopic manipulator
EP2910203B1 (en) Medical instrument
DE102013222525A1 (en) Valve device for at least one suction and / or irrigation channel of a surgical instrument
EP3158965B1 (en) Medical instrument
DE102022005028B4 (en) Albarran and pull wire driver for an Albarran
DE4444025A1 (en) Operating element for surgical forceps
DE19624181C2 (en) Surgical shaft instrument
DE102021104516A1 (en) Instrument for a robotic operating system
DE102009048600B4 (en) Instrument for surgical purposes
DE102013204677B4 (en) endoscopic instrument
DE102021105353A1 (en) Stopcock, stopcock housing and method of manufacturing a stopcock housing
DE102014012036A1 (en) Medical instrument for endoscopic surgery

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10779699

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10779699

Country of ref document: EP

Kind code of ref document: A1