WO1999044489A1 - Pivotable part at the distal end of an instrument for endoscopic use - Google Patents
Pivotable part at the distal end of an instrument for endoscopic use Download PDFInfo
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- WO1999044489A1 WO1999044489A1 PCT/EP1999/001230 EP9901230W WO9944489A1 WO 1999044489 A1 WO1999044489 A1 WO 1999044489A1 EP 9901230 W EP9901230 W EP 9901230W WO 9944489 A1 WO9944489 A1 WO 9944489A1
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- part according
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0055—Constructional details of insertion parts, e.g. vertebral elements
- A61B1/0056—Constructional details of insertion parts, e.g. vertebral elements the insertion parts being asymmetric, e.g. for unilateral bending mechanisms
Definitions
- the invention relates to a pivotable part at the distal end of an endoscopic instrument.
- Such endoscopes meet the requirement to be mobile at the immediate surgical site and have a large swiveling range, on the one hand for diagnosis such.
- joints have a symmetrical or one-sided, flat swivel range, which is determined by the geometry and number of joint elements.
- a fundamental disadvantage that cannot be suppressed from a technical point of view is the articulation of the joint, which can be limited but not completely avoided with increasing effort.
- a high degree of dimensional accuracy is mandatory, which is associated with high manufacturing costs.
- such sliding joint geometries are problematic for cleaning and sterilization.
- the invention is based on the object of designing the end region of an endoscope or, especially for abdominal surgery, a laparoscope technically so that when the endoscope shaft is stationary, a large swivel range for the distal end
- a pivotable part according to the characterizing features of claim 1.
- Such a part is made of a tissue-compatible, highly elastic material, into which incisions with a predetermined depth are made with respect to the axis.
- the respective cutting plane of the incisions lie parallel to one another and are penetrated by the pipe axis.
- the pivotable part is made of highly elastic material, so that it can be pivoted on a plane in the lumen pulling and / or pushing device. This allows the distal end of the part anchored to the endoscope to be pivoted flat and symmetrically to the left and right.
- the cutting planes of the incisions are preferably penetrated perpendicularly by the elongated axis of the sleeve (claim 2).
- the incisions can also be made so that the pipe axis and the normal of the planes form an acute angle.
- the shape of the incisions is important, especially in the end regions of an incision (claim 6). Due to their shape, these areas are decisive for the always elastic pivoting.
- the geometry of the incisions is based on the strength of the sleeve material. At the respective incision ends there should still be elastic conditions with maximum slewing of the sleeve. The incisions are excluded in their end areas because of the strongest deformation there.
- the annular webs formed by the incisions run thinner there and have their greatest width in the middle. Other incision and web shapes are also possible, as long as the tensile and compressive load with maximum swiveling still safely loads in the elastic range and there is therefore no risk of cracking.
- a Bowden cable (claim 11) is technically simple and reliable as a pulling device and, if the pull is sufficiently stiff, also as a pushing device. However, since the endoscope or laparoscope can be rotated around its shaft axis, swiveling by pulling alone is sufficient.
- this pivotable part is an elastic, in the conventional sense joint-free component that forms a lumen. It is again like a multi-joint mechanism, the "elementary joints" of which consist of material zones that are elastically stressed by tension and pressure but are held in position by means of the web connecting the cylinders, without any areas of these zones sliding against one another. There is none Due to the thin-walled cylindrical sleeve shape, in contrast to the classic joint mechanism, there is a large clear width of the sleeve, which is only reduced by the pulling and / or sliding device.
- FIG. 2 the underlying flat sheet metal strip with incision geometry
- Figure 4. the overall view of the instrument with distal, pivotable part.
- the exemplary embodiment of the pivotable part at the distal ene doskopende initially consists of the flat, rectangular, cold rolled NiTi sheet superelastic 170-500 .mu.m thick, the drawn according to the Figure 2 target with an automatic ⁇ overbased or computer-controlled Schneidegerat, a laser - jet cutter, is cut out.
- the cut sheet is step ⁇ as mountains leading the Zylmdergeometrie.
- specially made tools outer shapes and inner sleeves
- 3a shows the finished part with the scale for large orientation.
- 3b shows a view into the lumen of the part with the guide bushes for the Bowden cable.
- Fig. 3c shows the Bowden cable, which consists of a stiff wire, so that by pulling a Swivel direction and by pushing the opposite one can be selected.
- the movable part is placed on the endoscope or laparoscope at its end lying outside the right plane of the drawing in FIG. 1 and anchored.
- FIG. 4 it is shown on the far left as the last, elongated pipe piece that is operated via the pulling and / or pushing device, which is only indicated by the thicker line on the lower shaft contour edge that does not go all the way to the left contour.
- the use of the super elastic material TiNi has the advantage that the installation of a cable is sufficient, which still leaves a lot of free space in the lumen.
- the swiveling part is above all easy to clean and sterilize, because there are no difficult to access joint areas and therefore there are hidden surfaces that move against each other.
- the lightness of the sleeve material is an additional advantage in terms of long-term handling.
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Abstract
The invention relates to a pivotable part at the distal end of an endoscope. Said part consists of a histocompatible, highly elastic material and has incisions of a predetermined depth. The cutting plane of each of these incisions cuts through the axis. This relatively highly articulated structure has a high level of elastic mobility. Since the part is made from one piece, there are no surfaces which move in relation to each other and which are not visible. This would pose a problem in terms of cleaning and sterilisation. The mobile part, which consists of a superelastic NiTi, is a light, highly resistant and therefore elastically pivotable attachment for an endoscope.
Description
Schwenkbares Teil am distalen Ende eines endoskopisch eingesetzten InstrumentsSwiveling part at the distal end of an endoscopic instrument
Die Erfindung betrifft ein Schwenkbares Teil am distalen Ende eines endoskopisch eingesetzten Instruments.The invention relates to a pivotable part at the distal end of an endoscopic instrument.
Solche Endoskope erfüllen die Forderung am unmittelbaren Operationsort beweglich zu sein und einen großen Schwenkbereich, einerseits für die Diagnose wie z. B. das Ausleuchten, Absaugen oder Spulen des Operationsgebiets zu haben, oder andrerseits f r Operationsvorgange m die geeignete Position zu kommen.Such endoscopes meet the requirement to be mobile at the immediate surgical site and have a large swiveling range, on the one hand for diagnosis such. B. to illuminate, suction or coil the area of operation, or on the other hand to come m for operations m the appropriate position.
Technische Losungen für den distalen flexiblen Teil eines Endos- kops gibt es vielfaltige. Auf zwei häufig eingesetzte Prinzipien sei hier hingewiesen:There are many technical solutions for the distal, flexible part of an endoscope. Here are two common principles:
Ineinandergeschobene, unterschiedlich gekrümmte Hülsen oder ein von einem Metallgeflecht umgebener Kunststoffschlauch bilden den schwenkbaren, distalen Endoskopbereich, wie z. B. aus der PS 197 21 030 bekannt ist.Nested, differently curved sleeves or a plastic tube surrounded by a metal braid form the pivotable, distal endoscope area, such as. B. is known from PS 197 21 030.
Vielgelenke haben einen symmetrischen oder einseitigen, ebenen Schwenkbereich, der von der Geometrie und Gelenkelementanzahl festgelegt wird. Ein grundsätzlicher, technisch nicht zu unterdruckender Nachteil ist dabei das Gelenkspiel, das mit zunehmendem Aufwand allenfalls eingeschränkt aber nicht völlig vermieden werden kann. Bei kleinen Gelenkabmessungen, wie sie bei medizinischen Geraten notwendig sind, ist eine hohe Maßgenauigkeit zwingend, die mit hohen Herstellungskosten verbunden ist. Darüber hinaus sind solche aneinander gleitenden Gelenkgeometrien problematisch für die Reinigung und Sterilisierung.Many joints have a symmetrical or one-sided, flat swivel range, which is determined by the geometry and number of joint elements. A fundamental disadvantage that cannot be suppressed from a technical point of view is the articulation of the joint, which can be limited but not completely avoided with increasing effort. In the case of small joint dimensions, as are required in medical devices, a high degree of dimensional accuracy is mandatory, which is associated with high manufacturing costs. In addition, such sliding joint geometries are problematic for cleaning and sterilization.
Der Erfindung liegt die Aufgabe zugrunde, den Endbereich eines Endoskops oder, speziell für die Bauchchirurgie, eines Laparos- kops technisch so zu gestalten, daß bei stillstehendem Endo- skopschaft ein großer Schwenkbereich für das distale Ende be-The invention is based on the object of designing the end region of an endoscope or, especially for abdominal surgery, a laparoscope technically so that when the endoscope shaft is stationary, a large swivel range for the distal end
1
steht und innerhalb dieses Bereichs das Ende m jeder Position genau festgestellt werden kann. Weiter soll eine möglichst große lichte Weite, das Lumen, zur Durchfuhrung von Instrumenten be¬ stehen.1 stands and within this range the end m of each position can be determined exactly. Next to the largest possible inside diameter, the lumen, are carrying out of instruments be ¬.
Die Aufgabe wird durch ein schwenkbares Teil gemäß den kennzeichnenden Merkmalen des Anspruchs 1 gelost. Eine solches Teil ist aus einem gewebevertraglichen, hochelastischen Material, in das bezüglich der Achse aquidistante Einschnitte vorgegebener Tiefe eingebracht sind. Die jeweilige Schnittebene der Einschnitte liegen parallel zueinander und werden von der Rohrachse durchdrungen. Das schwenkbare Teil ist aus hochelastischem Material, so daß es über eine im Lumen verlaufende Zug- und/oder Schiebeeinrichtung m einer Ebene geschwenkt werden kann. Dadurch kann das distale Ende des am Endoskop verankerten Teils eben und symmetrisch nach links und rechts geschwenkt werden.The object is achieved by a pivotable part according to the characterizing features of claim 1. Such a part is made of a tissue-compatible, highly elastic material, into which incisions with a predetermined depth are made with respect to the axis. The respective cutting plane of the incisions lie parallel to one another and are penetrated by the pipe axis. The pivotable part is made of highly elastic material, so that it can be pivoted on a plane in the lumen pulling and / or pushing device. This allows the distal end of the part anchored to the endoscope to be pivoted flat and symmetrically to the left and right.
Die Schnittebenen der Einschnitte werden vorzugsweise senkrecht von der gestreckten Hulsenachse durchdrungen (Anspruch 2) . Die Einschnitte können aber auch so gelegt werden, daß die Rohrachse und die Normale der Ebenen einen spitzen Winkel bilden.The cutting planes of the incisions are preferably penetrated perpendicularly by the elongated axis of the sleeve (claim 2). The incisions can also be made so that the pipe axis and the normal of the planes form an acute angle.
Neben stets gleicher Emschnittiefe (Anspruch3) ist eine Änderung derselben vom proximalen Ende bis zum distalen ebenso möglich (Anspruch 4). Insbesondere wird mit monoton zunehmender Einschnittiefe zum distalen Ende hin (Anspruch 5) erreicht, daß die Schwenkung über die am distalen Ende ansetzende Zug- und/oder Schiebeeinrichtung stets dort beginnt.In addition to always the same depth of cut (claim 3), a change from the proximal end to the distal end is also possible (claim 4). In particular, with a monotonically increasing incision depth towards the distal end, the pivoting via the pulling and / or pushing device starting at the distal end always begins there.
Die Form der Einschnitte ist wichtig, insbesondere m den Endbereichen eines Einschnitts (Anspruch 6) . Diese Bereiche sind durch ihre Formung für die stets elastische Schwenkung entschei- dent . Die Geometrie der Einschnitte orientiert sich an der Festigkeit des Hulsenmateπals . An den jeweiligen Einschnittenden sollen a bei maximaler Schwenkung der Hülse noch sicher elastische Verhaltnisse bestehen. Die Einschnitte sind m ihren Endbereichen wegen der dort stärksten Verformung rund ausgenommen.
Die durch die Einschnitte gebildeten ringförmigen Stege laufen dort dunner zu und haben in der Mitte ihre größte Breite. Andere Einschnitt- und Stegformen sind auch möglich, solange Zug- und Druckbelastung bei maximaler Schwenkung noch sicher im elastischen Bereich belasten und damit keine Gefahr zur Rißbildung besteht .The shape of the incisions is important, especially in the end regions of an incision (claim 6). Due to their shape, these areas are decisive for the always elastic pivoting. The geometry of the incisions is based on the strength of the sleeve material. At the respective incision ends there should still be elastic conditions with maximum slewing of the sleeve. The incisions are excluded in their end areas because of the strongest deformation there. The annular webs formed by the incisions run thinner there and have their greatest width in the middle. Other incision and web shapes are also possible, as long as the tensile and compressive load with maximum swiveling still safely loads in the elastic range and there is therefore no risk of cracking.
Maßgebend für den Schwenkbereich sind die Zahl der Einschnitte, deren Abstand zueinander (Anspruch 7) und, ganz entscheident, die elastischen Materialeigenschaften (Ansprüche 8 bis 10) . Ausgezeichnet geeignetes Material ist die hochfeste und hochelastische, nämlich superelastische NiTi-Legierung (Anspruch 9) , mit der optimal ein großer Schwenkbereich bei wenig Material und hoher Festigkeit erreicht wird.Decisive for the swivel range are the number of incisions, their distance from each other (claim 7) and, quite decisively, the elastic material properties (claims 8 to 10). Excellent material is the high-strength and highly elastic, namely super-elastic NiTi alloy (claim 9), with which a large swivel range is achieved with little material and high strength.
Technisch einfach und zuverlaßig lost ein Bowdenzug (Anspruch 11) als Zugeinrichtung und bei genügend steifem Zug auch als Schiebeeinrichtung. Da das Endoskop oder Laparoskop aber um seine Schaftachse gedreht werden kann, genügt ein Schwenken durch das Ziehen alleine.A Bowden cable (claim 11) is technically simple and reliable as a pulling device and, if the pull is sufficiently stiff, also as a pushing device. However, since the endoscope or laparoscope can be rotated around its shaft axis, swiveling by pulling alone is sufficient.
Der Vorteil dieses schwenkbaren Teils besteht darin, daß es ein elastisches, im herkömmlichen Sinne gelenkfreies Bauteil ist, das ein Lumen bildet. Es ist doch wieder wie ein Vielgelenkme- chanismus, dessen „Elementargelenke" aus elastisch auf Zug und Druck beanspruchte jedoch zusammenhangende Materialzonen bestehen, die über den die Rmgzylmder verbindenden Steg in Position gehalten werden, ohne daß irgendwelche Bereiche dieser Zonen aneinander gleiten. Es gibt kein Gelenkspiel und damit irgendwelches hystereseartiges Bewegungsverhalten. Durch die d nnwandige zylindrische Hulsenform besteht im Gegensatz zum klassischen Gelenkmechanismus eine große lichte Weite der Hülse, die lediglich durch die Zug- und/oder Schiebeeinrichtung verringert wird.The advantage of this pivotable part is that it is an elastic, in the conventional sense joint-free component that forms a lumen. It is again like a multi-joint mechanism, the "elementary joints" of which consist of material zones that are elastically stressed by tension and pressure but are held in position by means of the web connecting the cylinders, without any areas of these zones sliding against one another. There is none Due to the thin-walled cylindrical sleeve shape, in contrast to the classic joint mechanism, there is a large clear width of the sleeve, which is only reduced by the pulling and / or sliding device.
Im folgenden wird die Erfindung anhand der Zeichnung naher erläutert. Es zeigen:
Figur 1 die Struktur des schwenkbaren Teils,The invention is explained in more detail below with reference to the drawing. Show it: 1 shows the structure of the pivotable part,
Figur 2 den zugrunde liegenden ebenen Blechstreifen mit Einschnittgeometrie,FIG. 2 the underlying flat sheet metal strip with incision geometry,
Figur 3a - c das zusammengeschweißte Teil mit montiertem Bowden- zug und3a-c the welded together part with the Bowden cable and
Figur 4. die Gesamtansicht des Instruments mit distal aufgesetztem, schwenkbaren Teil.Figure 4. the overall view of the instrument with distal, pivotable part.
Das Ausfuhrungsbeispiel des schwenkbaren Teils am distalen En- doskopende besteht zunächst aus dem ebenen, rechteckigen, kaltgewalzten, superelastischen NiTi-Blech von 170 - 500 μm Starke, das gemäß der Fig.2 gezeichneten Vorgabe mit einem automati¬ sierten oder rechnergesteuerten Schneidegerat, einem Laser- strahlschneider, ausgeschnitten wird. Nach bekanntem mehrstufigem Glüh- und Formprozeß wird das ausgeschnittene Blech schritt¬ weise die Zylmdergeometrie bergeführt. Für diesen Glüh- und Formprozeß werden eigens dafür angefertigte Werkzeuge (Aussenformen und Innenhulse) verwendet. Nachdem die vorgegebene zylindrische Form mit den Einschnitten maßgenau vorliegt, wird sie entlang der durch die beiden Stoßkanten gebildeten Mantel- linie durch Laserstrahlschweißen vollends zum mit Lumen versehenen schwenkbaren Teil zusammengeschweißt.The exemplary embodiment of the pivotable part at the distal ene doskopende initially consists of the flat, rectangular, cold rolled NiTi sheet superelastic 170-500 .mu.m thick, the drawn according to the Figure 2 target with an automatic ¬ overbased or computer-controlled Schneidegerat, a laser - jet cutter, is cut out. By a known multi-stage annealing and shaping process the cut sheet is step ¬ as mountains leading the Zylmdergeometrie. For this annealing and shaping process, specially made tools (outer shapes and inner sleeves) are used. After the specified cylindrical shape with the incisions is available, it is completely welded along the casing line formed by the two abutting edges by laser beam welding to form the pivotable part provided with lumens.
Es wird anhand von Figur 2 klar, wenn die gleichen Ausschnitte aus dem einst ebenen NiTi-Blech eine gerade Längsachse haben, durchdringt die Achse des fertigen beweglichen Teils die parallelen Schnittebenen senkrecht. Haben die Ausschnitte eine gleichartig gekrümmte Langsachse, dann bildet die Normale der jeweiligen Einschnittebene mit der Achse einen spitzen Winkel.It is clear from FIG. 2 that if the same cutouts from the once flat NiTi sheet have a straight longitudinal axis, the axis of the finished movable part penetrates the parallel cutting planes perpendicularly. If the cutouts have a similarly curved longitudinal axis, the normal of the respective incision plane forms an acute angle with the axis.
Fig 3a zeigt das fertige Teil mit dem Maßstab zur Großenorien- tierung. Fig 3b zeigt einen Blick in das Lumen des Teils mit den Fuhrungsosen für den Bowdenzug. Fig 3c zeigt den Bowdenzug, der aus einem steifen Draht besteht, so daß durch Ziehen eine
Schwenkrichtung und durch Schieben die entgegengesetzte gewählt werden kann.3a shows the finished part with the scale for large orientation. 3b shows a view into the lumen of the part with the guide bushes for the Bowden cable. Fig. 3c shows the Bowden cable, which consists of a stiff wire, so that by pulling a Swivel direction and by pushing the opposite one can be selected.
Die fertige Struktur zeigt Fig. 1, insbesondere auch die zugrunde liegende Modellierung des Teils über die Methode der fi- niten Elemente, mit der die mechanischen Eigenschaften quantitativ festgelegt werden. Der durch die Einschnittreihe gebildete, verbliebene Steg m axialer Richtung wird in der Zeichenebene von rechts nach links monoton schmaler. Die beiden Enden des jeweiligen Einschnittendes sind rund ausgenommen. Die durch unmittelbar benachbarte Einschnitte gebildeten Schnittstege werden zur Mitte hm breiter. Durch die tiefer werdenden Einschnitte zur linken Zeicheneben h sind die Hebelverhaltnisse und Steiflgkeitseigenschaften des beweglichen Teils so eingerichtet, daß bei Zug oder Schub mit dem Bowdenzug die ebene Schwenkung stets am distalen Ende einsetzt.1 shows the finished structure, in particular also the underlying modeling of the part using the finite element method, with which the mechanical properties are determined quantitatively. The remaining web in the axial direction formed by the incision row becomes monotonically narrower in the drawing plane from right to left. The two ends of the respective cut end are round excepted. The cutting webs formed by immediately adjacent incisions become wider in the middle hm. Due to the deepening incisions to the left plane of the drawing h, the lever ratios and stiffness properties of the movable part are set up in such a way that the plane pivoting always starts at the distal end when the Bowden cable is pulled or pushed.
Das bewegliche Teil wird an seinem außerhalb der rechten Zeichenebene m Figur 1 liegenden Ende auf das Endoskop oder Lapa- roskop aufgesetzt und verankert. In der Figur 4 ist es ganz links als letztes, gestrecktes Rohrstuck eingezeichnet, das ber die Zug- und/oder Schiebeeinrichtung bedient wird, die nur noch durch den dickeren, nicht ganz bis zur linken Kontur gehenden Strich an der unteren Schaftkonturkante angedeutet ist.The movable part is placed on the endoscope or laparoscope at its end lying outside the right plane of the drawing in FIG. 1 and anchored. In FIG. 4 it is shown on the far left as the last, elongated pipe piece that is operated via the pulling and / or pushing device, which is only indicated by the thicker line on the lower shaft contour edge that does not go all the way to the left contour.
Der Gebrauch des superelastischen Werkstoffs TiNi verschafft den Vorteil, daß der Einbau eines Seilzugs ausreicht, womit weiterhin viel Freiraum im Lumen bestehen bleibt. Das schwenkbare Teil ist vor allem einwandfrei zu reinigen und zu sterilisieren, weil es keine schwer zuganglichen Gelenkbereiche und damit verdeckt gegeneinander sich bewegende Flachen gibt. Die Leichtigkeit des Hulsenwerkstoffs ist ein zusätzlicher Vorteil in Hinblick auf Langzeithandhabung .
The use of the super elastic material TiNi has the advantage that the installation of a cable is sufficient, which still leaves a lot of free space in the lumen. The swiveling part is above all easy to clean and sterilize, because there are no difficult to access joint areas and therefore there are hidden surfaces that move against each other. The lightness of the sleeve material is an additional advantage in terms of long-term handling.
Claims
1. Schwenkbares Teil am distalen Ende eines endoskopisch einge¬ setzten Instruments, dadurch gekennzeichnet, daß das Teil aus aquidistant in einem zylindrischen Rohr einge¬ brachten Einschnitten vorgegebener Tiefe besteht, so daß noch ein parallel zur Rohrachse verlaufender Steg bestehen bleibt, die Einschnittebenen parallel zueinander liegen und von der Rohrachse durchdrungen werden, das Material des Teils hochelastisch ist, am distalen Ende des Teils an der Innenwand gegen ber dem Steg eine im Lumen geführte und zum Bedienteil verlaufende Zug- und/oder Schiebeeinrichtung ansetzt.1. Swiveling part at the distal end of an endoscopically inserted ¬ instrument, characterized in that the part consists of aquidistantly inserted in a cylindrical tube ¬ incisions of predetermined depth, so that a web extending parallel to the tube axis remains, the incision planes parallel to each other lie and are penetrated by the tube axis, the material of the part is highly elastic, at the distal end of the part on the inner wall opposite the web, a pulling and / or pushing device guided in the lumen and extending to the operating part attaches.
2. Schwenkbares Teil nach Anspruch 1, dadurch gekennzeichnet, daß die Rohrachse die Einschnittebenen senkrecht durchdringt.2. Swiveling part according to claim 1, characterized in that the tube axis penetrates the incision planes vertically.
3. Schwenkbares Teil nach Anspruch 2, dadurch gekennzeichnet, daß die Emschnittiefe der Einschnitte gleich ist.3. Pivotal part according to claim 2, characterized in that the cut depth of the incisions is the same.
4. Schwenkbares Teil nach Anspruch 2, dadurch gekennzeichnet, daß sich die Emschnittiefe vom proximalen zum distalen Bereich ändert.4. Swiveling part according to claim 2, characterized in that the depth of cut changes from the proximal to the distal region.
5. Schwenkbares Teil nach Anspruch 4, dadurch gekennzeichnet, daß die Emschnittiefe vom proximalen zum distalen Bereich des Teils monoton zunimmt.5. Pivotal part according to claim 4, characterized in that the depth of cut increases monotonically from the proximal to the distal region of the part.
6. Schwenkbares Teil nach den Ansprüchen 3 und 5, dadurch gekennzeichnet, daß die Einschnitte an ihren jeweils beiden Endbereichen rund ausgenommen sind, so daß dort beim Manipulieren an der Zug-
und/oder Schiebeeinrichtung bis zum gegenseitigen Berühren unmittelbar benachbarter Ringe sicher keine plastische Ver¬ formung oder ein Riß auftritt.6. Swiveling part according to claims 3 and 5, characterized in that the incisions are excluded round at their respective two end regions, so that there when manipulating the pull and / or sliding means to the mutual touch immediately adjacent rings sure no plastic deformation Ver ¬ or a crack occurs.
7. Schwenkbares Teil nach Anspruch 6, dadurch gekennzeichnet, daß die Anzahl Einschnitte und Stege und die Breite derselben den distalen Schwenkbereich bestimmen.7. Pivoting part according to claim 6, characterized in that the number of incisions and webs and the width thereof determine the distal pivoting range.
8. Schwenkbares Teil nach Anspruch 7, dadurch gekennzeichnet, daß das Teil aus Federstahl ist.8. Swivel part according to claim 7, characterized in that the part is made of spring steel.
9. Schwenkbares Teil nach Anspruch 7, dadurch gekennzeichnet, daß das Teil aus einer superelastischen NiTi-Legierung ist.9. Swiveling part according to claim 7, characterized in that the part is made of a super elastic NiTi alloy.
10. Schwenkbares Teil nach Anspruch 7, dadurch gekennzeichnet, daß das Teil aus einem nichtmetallischen Material wie Kohlefaseroder Glasfaserverbundwerkstoff ist.10. Pivoting part according to claim 7, characterized in that the part is made of a non-metallic material such as carbon fiber or glass fiber composite material.
11. Schwenkbares Teil nach den Ansprüchen 7 bis 10, dadurch gekennzeichnet, daß die Zug- und/oder Schiebeeinrichtung ein Bowdenzug ist.
11. Swiveling part according to claims 7 to 10, characterized in that the pulling and / or sliding device is a Bowden cable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19809588 | 1998-03-06 | ||
| DE19809588.0 | 1998-03-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999044489A1 true WO1999044489A1 (en) | 1999-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1999/001230 WO1999044489A1 (en) | 1998-03-06 | 1999-02-25 | Pivotable part at the distal end of an instrument for endoscopic use |
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| WO (1) | WO1999044489A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010034345A1 (en) * | 2010-08-14 | 2012-02-16 | Richard Wolf Gmbh | Endoscopic instrument comprises handle and shaft which is provided with bent section, where tubular support body is arranged in shaft, and tubular support body is divided in segments |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353358A (en) * | 1980-08-28 | 1982-10-12 | Emerson Reynolds L | Sigmoidoscope |
| EP0098100A2 (en) * | 1982-06-24 | 1984-01-11 | Olympus Optical Co., Ltd. | Flexible tube for an endoscope |
| GB2130885A (en) * | 1982-11-16 | 1984-06-13 | Elven Precision Limited | Flexible distal end portion for endoscope |
| US4911148A (en) * | 1989-03-14 | 1990-03-27 | Intramed Laboratories, Inc. | Deflectable-end endoscope with detachable flexible shaft assembly |
| DE4201280C1 (en) * | 1992-01-18 | 1992-12-10 | Richard Wolf Gmbh, 7134 Knittlingen, De | |
| FR2713492A1 (en) * | 1993-12-09 | 1995-06-16 | Microfil Ind Sa | Flexible tubular guide |
| EP0764424A2 (en) * | 1995-09-22 | 1997-03-26 | Mitsubishi Cable Industries, Ltd. | Bending mechanism and stereoscope using same |
| DE19721030C1 (en) | 1997-05-20 | 1998-12-17 | Karlsruhe Forschzent | Device for guiding a medical probe |
-
1999
- 1999-02-25 WO PCT/EP1999/001230 patent/WO1999044489A1/en active Application Filing
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353358A (en) * | 1980-08-28 | 1982-10-12 | Emerson Reynolds L | Sigmoidoscope |
| EP0098100A2 (en) * | 1982-06-24 | 1984-01-11 | Olympus Optical Co., Ltd. | Flexible tube for an endoscope |
| GB2130885A (en) * | 1982-11-16 | 1984-06-13 | Elven Precision Limited | Flexible distal end portion for endoscope |
| US4911148A (en) * | 1989-03-14 | 1990-03-27 | Intramed Laboratories, Inc. | Deflectable-end endoscope with detachable flexible shaft assembly |
| DE4201280C1 (en) * | 1992-01-18 | 1992-12-10 | Richard Wolf Gmbh, 7134 Knittlingen, De | |
| FR2713492A1 (en) * | 1993-12-09 | 1995-06-16 | Microfil Ind Sa | Flexible tubular guide |
| EP0764424A2 (en) * | 1995-09-22 | 1997-03-26 | Mitsubishi Cable Industries, Ltd. | Bending mechanism and stereoscope using same |
| DE19721030C1 (en) | 1997-05-20 | 1998-12-17 | Karlsruhe Forschzent | Device for guiding a medical probe |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010034345A1 (en) * | 2010-08-14 | 2012-02-16 | Richard Wolf Gmbh | Endoscopic instrument comprises handle and shaft which is provided with bent section, where tubular support body is arranged in shaft, and tubular support body is divided in segments |
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