DE29623113U1 - Axialgriff für chirurgische, insbesondere endoskopische Instrumente - Google Patents
Axialgriff für chirurgische, insbesondere endoskopische InstrumenteInfo
- Publication number
- DE29623113U1 DE29623113U1 DE29623113U DE29623113U DE29623113U1 DE 29623113 U1 DE29623113 U1 DE 29623113U1 DE 29623113 U DE29623113 U DE 29623113U DE 29623113 U DE29623113 U DE 29623113U DE 29623113 U1 DE29623113 U1 DE 29623113U1
- Authority
- DE
- Germany
- Prior art keywords
- branches
- locking devices
- brought
- adjusting device
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/2909—Handles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/2909—Handles
- A61B2017/2912—Handles transmission of forces to actuating rod or piston
- A61B2017/2919—Handles transmission of forces to actuating rod or piston details of linkages or pivot points
- A61B2017/292—Handles transmission of forces to actuating rod or piston details of linkages or pivot points connection of actuating rod to handle, e.g. ball end in recess
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/2909—Handles
- A61B2017/2912—Handles transmission of forces to actuating rod or piston
- A61B2017/2919—Handles transmission of forces to actuating rod or piston details of linkages or pivot points
- A61B2017/2922—Handles transmission of forces to actuating rod or piston details of linkages or pivot points toggle linkages
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
- A61B2017/2929—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2946—Locking means
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Ophthalmology & Optometry (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Endoscopes (AREA)
Description
N ta\OWIa52 Gehölzweg 20, D-22043 Hamburg Ihr Zeichen/Your Ref:
OLYMPUS WINTER & IBE GMBH
Kuehnstraße 61, 22045 Hamburg
Kuehnstraße 61, 22045 Hamburg
Axialgriff für chirurgische, insbesondere
endoskopische Instrumente
endoskopische Instrumente
Die Erfindung bezieht sich auf einen Axialgriff nach dem Oberbegriff
des Anspruches 1.
Gattungsgemäße Axialgriffe werden insbesondere bei endoskopischen
Schaftinstrumenten eingesetzt. Wesentliches Merkmal ist, daß die Griffachse und die Achse des Schaftes fluchten. Ähnlich wie die
bekannten seillich abstehenden Scherengriffe weisen auch Axialgriffe
zwei relativ zueinander verschwenkbare Branchen auf, die bei Verschwenkung ein am distalen Ende des Schaftes angeordnetes
Arbeitswerkzeug betätigen.
Axialgriffe erleichtern die Handhabung insbesondere solcher Instrumente,
die während des Gebrauchs häufig um ihre Achse verdreht werden, wie z.B. Nadelhalter etc.
Die relativ zueinander verschwenkbaren Branchen lassen sich bei gattungsgemäßen Axialgriffen mit Riegeleinrichtungen in unterschiedlichen
Verschwenkposilionen lösbar miteinander verriegeln. In aller Regel sind die Riegeleinrichtungen miteinander in Eingriff
bringbare Rastelemente, deren Rastungen so ausgestaltet sind, daß
sich die Branchen ohne weitere Maßnahmen zusammendrücken lassen und nach Loslassen automatisch in der jeweils erreichten Relativposition
gegen ein Auseinanderschwenken verriegelt sind.
Für den Fall des oben beschriebenen Nadelhalter bedeutet dies,
daß der Operateur die Branchen zunächst soweit zusammendrücken kann, bis die am distalen Ende des Schaftes betätigten Backen des
Nadelgreifers eine Nadel fest und unter Spannung zwischen sich halten. Wird der Griff dann losgelassen, so bleiben die Griffbranchen
in dieser Position gegeneinander verriegelt und die Nadel wird selbsttätig gehalten, wodurch der Operateur während des Nähvorganges
entlastet wird.
Soll der Griff z.B. nach Beendigung des Nähvorganges zum Entfernen
der Nadel wieder auseinandergeschwenkt werden, so können die Riegeleinrichlungen mittels einer am Griff angeordneten Stelleinrichtung
außer Eingriff gebracht werden.
Bei herkömmlichen Griffen ist dabei vorgesehen, daß die Stelleinrichtung
die Regeleinrichtungen nur während des Zeitraumes der Betätigung außer Eingriff bringt. Danach nehmen die Riegeleinrichlungen
automatisch wieder eine Eingriffsposition bzw. eine Position ein, in der sie während des Verschwenken in Eingriff
bringbar sind.
Aufgrund ihrer oben beschriebenen Eigenschaften sind die gattungsgemäßen
Axialgriffe insbesondere für Nadelhalter geeignet und werden vorrangig auch dort eingesetezt. Ihr Einsatz bei z.B.
Zangen zum Ergreifen und Halten von Gewebe ist dagegen eher problematisch. Insbesondere bei derartigen Gewebezangen, aber
auch bei anderen endoskopischen Instrumenten, kann unter Umständen nicht erwünscht sein, daß die Griflbranchen automatisch in jeder
Verschwenkposition gegen eine Auseinanderbewegiing verriegelt
werden, da hierdurch ein feinfühliges Arbeiten erschwert wird.
In letzter Zeit geht die Tendenz dabin, vom Aufbau her ähnliche Geräte mit unterschiedlichen Funktionen so weit wie möglich aus
gleichen Komponenten aufzubauen. Diese Komponenten können dann beliebig unter den Instrumenten ausgetauscht werden. Denkbar
ist z.B. ein modulares Baukastensystem, mit dem sich z.B. Nadelgreifer aber auch Gewebezangen bzw andere Instrumente zusammensetzen
lassen.
Ein soches System setzt allerdings eine große Flexibilität voraus,
die mit den gattungsgemäßen Axialgriffeii nicht gegeben ist.
Die Aufgabe der Erfindung ist es daher, einen Axialgriff zu schaffen,
der eine problemlose Betätigung von insbesondere endoskopischen Schafünslrumenten mit unterschiedlichen Funktionen erlaubt.
Gelöst wird diese Aufgabe mit einem Axialgriff, der die kennzeichnenden
Merkmale des Anspruchs 1 aufweist.
Danach ist vorgesehen, daß die Stelleinrichtung in eine Einstellposilion
bringbar ist, in der die Riegeleinrichtungen dauerhaft und selbsttätig bis zur Aufhebung dieser Einslellposition außer Eingriff
bleiben.
Erfindungsgemäß erhält man damit einen Axialgriff, der einerseits die Eigenschaften gattungsgemäßer Griffe aufweist und darüber
hinaus aber auch so eingestellt werden kann, daß seine Branchen frei und ohne daß hierfür eine dauernde Betätigung der Stelleinrichtung
durch den Operateur erforderlich ist, beliebig relativ zueinander verschwenkbar sind.
Der Operateur kann also durch entsprechende Einstellung der Stelleinrichtung
den Griff an die Funktion des jeweiligen Instrumentes anpassen. Soll der Griff z.B. für eine Gewebezange eingesetzt werden,
so wird die Stelleinrichtung in die erfindungsgemäße Einstellposition gebracht, in der die Riegeleinrichtungen dauerhaft außer
Eingriff sind. Ist der Griff dagegen für einen Nadelhalter oder
ähnliches gedacht, so wird diese Einstellposition wieder aufgehoben,
mit der Folge, daß die Griflbranchen, wie die der oben beschriebenen
bekannten Griffe, in unterschiedlichen Positionen gegen ein Auseinanderschwenken verriegelbar sind und durch Betätigung
der Slelleinrichlung und nur während ihrer Betätigung außer Eingriff gebracht werden.
Der erfindungsgemäße Axialgriff ist damit universell einsetzbar.
Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.
Vorteilhaft ist die Stelleinrichtung so aufgeslaltet, daß sie sich
zunächst in eine erste Position bringen läßt, in der die Riegeleinrichtungen außer Eingriff gelangen und daß sie dann zur Erzielung
der oben angesprochenen dauerhaften Einstellposilion in dieser ersten Position arretierbar ist. Besonders vorteilhaft ist die Stelleinrichtung
ein in einer Richtung gegen die Kraft einer Feder verschiebbares und drehbares Element, das durch Verschiebung gegen
die Federkraft in die oben angesprochene erste Position bringbar und durch Verdrehen in dieser ersten Position arretierbar ist.
Wie bei gattungsgemäßeu Axialgriffen, so ist auch bei dem erfindungsgemäßen
Griff vorzugsweise vorgesehen, daß die Riegeleinrichtungen durch jeweils an einer der Branchen aufeinander zuweisend
angeordnete Elemente mit zugeordneten Rastungen gebildet sind. Die Rastungen sind so ausgerichtet, daß bei Eingriff der Riegeleinrichtungen
ein Zusammendrücken der Branchen (innerhalb ihres Verschwenkbereiches) möglich ist, während ein Auseinanderschwenken
der Branchen durch den jeweils eingestellten Rasteingriff verhindert wird. Solche Riegeleinrichtungen werden standardmäßig
verwendet und lassen sich in besonders einfacher Weise konstruktiv verwirklichen.
Zur Entriegelung reicht es, daß eines der Rastelemente (oder beide)
soweit ausgelenkt werden, bis ihre Rastungen außer Eingriff sind. Auch der hierfür erforderliche Mechanismus kann in besonders einfacher
Weise verwirklicht werden.
Im folgenden soll die Erfindung an Hand von Abbildungen, die beispielhaft
eine Ausführungsform der Erfindung zeigen, näher erläutert werden.
Dabei zeigt:
Fig. 1: im Teilschnitt eine Seitenansicht des Griffes,
Fig. 2: den Grill aus Fig. 1 in einer anderen Verschwenkpo-
sition und
Fig. 3: den Griff aus Fig. 2 in der dort dargestellten Ver-
schwenkposition, wobei allerdings die Riegeleinheiten
außer Eingriff gebracht sind.
In Fig. 1 erkennt man ein Ausführungsbeispiel des erfindungsgemäßen
Griffes 10, der an einem nur teilweise dargestellten Schaft 11 eines endoskopischen Instrumentes angeordnet ist. Der Griff 10
weist eine ortsfest am Schaft 11 angeordnete Branche 12 und eine daran in einem Gelenk 13 verschwenkbar gelagerte Branche 14 auf.
Bei Verschwenkung der Branchen 12 und 14 gegeneinander wird über aneinander und an den Branchen angelenkte Hebel 15 und 16
ein mit seinem proximalen Ende in dem Hebel 16 befestigtes Schub- und Zugelement 17 in Richtung des Pfeiles 18 verschoben.
Das Schub- und Zugelement 17 ist an seinem distalen Ende mit einem nicht dargestellten Werkzeug verbunden, das durch Verschiebung
des Elementes betätigt wird.
An den Branchen 12 und 14 sind weiterhin aufeinander zuweisende Riegeleinrichlungen 19 und 20 vorgesehen. Die Riegeleinriclitungen
19 und 20 weisen Rastungen 21 und 22 auf und sind so positioniert bzw. so angeordnet, daß die Riegeleinrichtunngen bei Verschwenkung
der Branchen 12 und 14 in den eingangs beschriebenen und in den in Fig. 2 gezeigten Rasleingriff bringbar sind. Hierauf wird
später noch eingegangen.
Die Riegeleinrichtung 19 ist an dem einen Ende eines in einem Gelenk
23 verschwenkbar gelagerten Hebels 24 angeordnet. An dem anderen Ende des Hebels 24 greift ein in Richtung des Pfeiles 25
verschiebbares Element 26 einer Stelleinrichtung an. Wird das Element 26 in die Branche 12 hineingedrückt, so wird das abgewandte
Ende des Hebels 24 gegen die Kraft einer Feder 27 (wie in Fig. 3 dargestellt) nach oben gedrückt, wobei das Riegelelement 19
nach hinten verschwenkt. An dem Element 26 ist mindestens ein Vorsprung 28 ausgebildet, der in einer definierten Eindrückposition
des Elementes 26 durch Verdrehung dieses Elementes in Eingriff mit Ausnehmungen 29 in der Griffbranche 12 gebracht werden
kann und in Eingriffsposition das Element 26 gegen die Kraft der Feder 27 arretiert.
Fig. 2 zeigt den Griff 10 aus Fig. 1. In dieser Darstellung sind die
Branchen 12 und 14 soweit aufeinander zu verschwenkt worden, daß die Riegeleinrichtungen 19 und 20 mit ihren Rastungen 22 und
21 in Eingriff gelangt sind. In der gezeigten Eingriffsposition können die Branchen 12 und 14 noch weiter zusammengeführt werden,
wobei in den jeweiligen Verschwenkpositionen jeweils ein neuer Rasteingriff entsteht. Ein Auseinanderscliwenken der Griffbranchen
12 und 14 ist nicht möglich. Hierzu muß, wie in Fig. 3 dargestellt, die Riegeleinrichtung 19 durch Eindrücken der Stelleinrichtung 26
nach hinten ausgelenkt und die Rastverbindung zwischen den beiden Riegeleinrichlungen 19 und 20 gelöst werden.
Dieser Zustand ist in Fig. 3 dargestellt. Man erkennt, daß das Element
26 der Stelleinrichtung soweit eingeschoben wurde, daß sich sein Vorsprung 28 auf Höhe der Ausnehmungen 29 befindet, dabei
wurde der Hebel 24 gegen die Kraft der Feder 27 verschwenkl und die Riegeleinrichtung 19 außer Eingriff mit der Einrichtung 20 gebracht.
In diesem Zustand, d.h. solange das Element 26 in dieser Position eingedrückt ist, können die Branchen 12 und 14 frei gegeneinander
verschwenkt werden. Erfindungsgemäß ist vorgesehen, daß das Element 26 der Stelleinrichtung entweder von dem Operateur
in dieser Stellung gehalten werden kann oder aber, wie in diesem Fall, durch Verdrehung mit seinem Vorsprung 28 in den
Ausnehmungen 29 dauerhaft arretiert werden kann (gestrichelt dargestellt),
wobei dann die Riegeleinrichlungen 19 und 20 ebenfalls dauerhaft außer Eingriff bleiben.
Dargestellt ist eine besonders bevorzugte Ausführungsform. Selbstverständlich
kann die Stelleinrichtung auch auf andere Weise verwirklicht werden. So wäre es z.B. denkbar, daß die Stelleinrichtung
zwei Elemente aulweist, von denen eines die kurzzeitige Lösung der Riegelverbiiidung bewirkt und das andere die dauerhalte.
Selbstverständlich muß die Stelleinrichtung auch nicht zwingend mit einem Element arbeiten, das gleichzeitig verschoben und verdreht
werden kann. Denkbar wäre z.B. auch ein Element, daß nur verschiebbar ist und durch eine einschiebbare Schiebesicherung auf der
oberen Seite der Griffbrauche 12 arretierbar ist. Weiterhin ist
selbstverständlich auch der Steileinrichtung erzielbare Effekt nicht
ausschließlich auf eine Auslenkung der Riegeleinrichtung nach hinten beschränkt. Denkbar wäre auch eine Verschiebung bzw. Verdrehungsbewegung.
Claims (5)
1. Axialgriff für chirurgische, insbesondere endoskopische Instrumente,
mit zwei relativ zueinander verschwenkbaren Branchen, an denen einander zugeordnete Riegeleinrichtungen
vorgesehen sind, die beim Zusammendrücken der Branchen in Eingriff bringbar sind und diese dann in im wesentlichen
der jeweils erreichten Position gegen ein Auseinanderschwenken verriegeln, wobei eine an mindestens einer der
Riegeleinrichtungen angreifende Stelleinrichtung vorgesehen ist, mit deren Betätigung die Riegeleinrichtungen zum Auseinanderschwenken
der Branchen aui3er Eingriff bringbar sind, dadurch gekennzeichnet, daß die Stelleinrichtung (26)
in eine dauerhafte Einstellposition bringbar ist, in der sie die
Riegeleinrichtungen (19, 20) dauerhaft und selbsttätig bis zur Aufhebung dieser Einstellposition außer Eingriff hält.
2. Axialgriff nach Anspruch 1, dadurch gekennzeichnet, daß zur Erzielung der Einslellposilion die Stelleinrichtung
zunächst in eine erste Position bringbar ist, in der die Riegeleinrichtungen
(19, 20) außer Eingriff in allen Verschwenkpositionen der Branchen (12, 14) gehalten sind und dann in dieser
ersten Position zur Erzielung der dauerhaften Einstellposition arretierbar ist.
3. Axialgriff nach Anspruch 2, dadurch gekennzeichnet, daß die Stelleinrichtung ein auf einer Branche (12) angeordnetes
verschiebbares und drehbares Element (26) ist, das durch Verschiebung in die erste Position und durch Verdrehen aus
dieser ersten Position in die dauerhafte Einstellposition bringbar ist.
4. Axialgriff nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet,
daß die Riegeleinrichtungen (19, 20) jeweils an einer der Branchen (12, 14) aufeinander zuweisend angeordnete
Elemente (19, 20) mit einander zugeordneten Rastungen (21, 22) aufweisen.
5. Axialgriff nach Anspruch 4, dadurch gekennzeichnet, daß
eines der Elemente (19) verschwenkbar gelagert ist und durch Betätigung des Stellgliedes (26) soweit auslenkbar ist,
daß die einander zugeordneten Rastungen (21, 22) außer Eingriff sind.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29623113U DE29623113U1 (de) | 1996-09-18 | 1996-09-18 | Axialgriff für chirurgische, insbesondere endoskopische Instrumente |
| DE19739002A DE19739002A1 (de) | 1996-09-18 | 1997-09-06 | Axialgriff für chirurgische, insbesondere endoskopische Instrumente |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19637959 | 1996-09-18 | ||
| DE29623113U DE29623113U1 (de) | 1996-09-18 | 1996-09-18 | Axialgriff für chirurgische, insbesondere endoskopische Instrumente |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29623113U1 true DE29623113U1 (de) | 1997-10-30 |
Family
ID=26029465
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29623113U Expired - Lifetime DE29623113U1 (de) | 1996-09-18 | 1996-09-18 | Axialgriff für chirurgische, insbesondere endoskopische Instrumente |
| DE19739002A Withdrawn DE19739002A1 (de) | 1996-09-18 | 1997-09-06 | Axialgriff für chirurgische, insbesondere endoskopische Instrumente |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19739002A Withdrawn DE19739002A1 (de) | 1996-09-18 | 1997-09-06 | Axialgriff für chirurgische, insbesondere endoskopische Instrumente |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE29623113U1 (de) |
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1997
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|---|---|
| DE19739002A1 (de) | 1998-04-02 |
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