WO1990004947A1 - Retractor - Google Patents

Retractor Download PDF

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Publication number
WO1990004947A1
WO1990004947A1 PCT/EP1989/001284 EP8901284W WO9004947A1 WO 1990004947 A1 WO1990004947 A1 WO 1990004947A1 EP 8901284 W EP8901284 W EP 8901284W WO 9004947 A1 WO9004947 A1 WO 9004947A1
Authority
WO
WIPO (PCT)
Prior art keywords
spreader
screw
arm
arms
spreading
Prior art date
Application number
PCT/EP1989/001284
Other languages
German (de)
French (fr)
Inventor
Link Gmbh & Co. Waldemar
Original Assignee
Link, Helmut, D.
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 Link, Helmut, D. filed Critical Link, Helmut, D.
Publication of WO1990004947A1 publication Critical patent/WO1990004947A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/0206—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with antagonistic arms as supports for retractor elements

Definitions

  • the invention relates to a wound spreader with two essentially parallel spreading arms which are connected near one of their ends by a rod-shaped element, on which one spreading arm is rigid and on which the other spreading arm is displaceable in the direction of the extension of the rod-shaped element is stored and can be locked at a selectable distance from the first spreader arm, with sheet-like spreader elements being fastened to the other ends of the spreader arms with the aid of detachable screw connections.
  • Wound spreaders serve to keep the wound open during the operation so that operations can be carried out on the exposed organs.
  • the wound is held open by the sheet-like spreading elements, the so-called valves, which in turn are held at a preselectable and lockable distance from one another by the spreading arms.
  • valves or expansion elements are detachably attached to the expansion arms so that the valves can be replaced for the corresponding surgical purpose.
  • a desired angle setting of the valves with respect to the spreading arms can be set in this way. This angle adjustment is done by turning the valves with respect to the spreader arms and then screwing the valves onto the spreading arms with the aid of knurled nuts or wing nuts, so that the valves can then no longer rotate relative to the spreading arms.
  • the object of the invention is to create a wound spreader in which, despite the adjustable angular position of the valves with respect to the spreading arms, a desired angular position can be fixed simply and reliably.
  • the solution according to the invention consists in that the expansion elements and the expansion arms are provided with interlocking teeth in the area of the screw connection.
  • valves By loosening the screw connection, the valves can be replaced as with previously known wound spreaders. After partially loosening the screw connection, a desired angle can be set. If the screw connection is then tightened again, the angle setting is reliably fixed due to the interlocking teeth.
  • the teeth are advantageously provided on surfaces of the spreading arms and spreading elements which are oriented perpendicular to the screw of the screw connection.
  • the toothings are thus located on mutually opposite end faces of the connecting elements on spreading arms and Spreading elements or on corresponding parts of the same with which the connection is made.
  • each spreader arm has a cylindrical projection which is coaxial with the screw of the screw connection and is attached to the spreader element fastened thereon, and each spreader element has a cylindrical recess which is coaxial with the screw of the screw connection and is directed towards the spreader arm connected thereto. wherein the teeth are provided on the cylinder jacket surfaces. It is also possible to provide the spreader arms with the recess and the spreader elements with the projections.
  • toothings on the cylinder jacket surfaces can be combined with corresponding toothings on the cylinder end faces.
  • Fig. 1 is a perspective view of a wound spreader of the invention.
  • Fig. 2 shows a longitudinal section through an expansion arm and an expansion element, which shows the connection of these two parts in detail.
  • the wound spreader consists of two essentially parallel spreading arms 1, 2, which are formed in two parts. Both spreader arms 1, 2 consist of two elongated elements 3, 4, each of which is connected to one another by a joint 5, so that the instrument can be used more flexibly for different surgical purposes.
  • the part 3 of each spreader arm 1, 2 is connected to a rack 6.
  • the part 3 of the spreader arm 2 is rigidly connected to this rod 6, while the arm 3 of the other spreader arm 1 can slide on this rack 6.
  • the spreading arm 1 With the aid of a gear drive to be operated with a screw 7, the spreading arm 1 can be moved back and forth along the rack, so that the distance between the spreading arms 1, 2 can be increased by turning the screw 7 in order to spread the wound.
  • a spring-loaded pawl 8 prevents the arms 1, 2 from approaching each other again; this pawl 8 engages one after the other in successive teeth of the rack 6 when the distance is increased. If the distance is to be reduced again, it is only necessary to bring the pawl 8 out of engagement with the toothing of the rack 6 by pressing on the part of the pawl 8 on the left in FIG. 1 which protrudes upwards.
  • valves are fastened to the parts 4 of the arms 1, 2 and can be exchanged in order to be able to use the suitable valves for every purpose of the operation.
  • a screw 10 is fastened to the valve 9 and passes through a corresponding bore 11 in the part 4.
  • the attachment or fixing in a desired position is carried out by turning the wing nut 12.
  • valves 9 cannot twist, they have a cylindrical projection 13 provided with a toothing on the cylindrical surface, which engages in a corresponding recess 14, which is also cylindrical and toothed, of the part 14. In this way, a non-rotatable connection is achieved by tightening the wing nut 12. If a different angle is to be set, then the wing nut 12 loosened until the position shown in FIG. 2 is reached. The expansion element 9 can then be rotated in relation to the expansion arm part 4 in the desired position. The fixing in this position is then carried out by tightening the wing nut 12 again.
  • the toothing could be provided instead of the toothing on the cylinder wall or additionally to the end faces of the parts 13 and 14. If such toothing is only provided on the end faces, it would of course also be possible to dispense with a cylindrical projection 13 and a cylindrical recess 14. It would also be possible to provide the cylindrical projection 13 on part 4 and the cylindrical recess 14 on part 9.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

A retractor comprises two essentially parallel retractor arms (4) with retractor elements (9) fastened to their ends by means of removable screw connections (10, 12). The retractor is characterized in that the retractor elements (9) and the retractor arms (4) are provided with interlocking teeth (13, 14) in the region of the screw connections (10, 12).

Description

Wundspreizer Wound spreader
Die Erfindung betrifft einen Wundspreizer mit zwei im wesent¬ lichen parallelen Spreizarmen, die in der Nähe einer ihrer Enden durch ein stangenförmiges Element verbunden sind, an dem der eine Spreizarm starr und an dem der andere Spreizarm in Richtung der Erstreckung des stangenförmigen Elementes ver- schieblich gelagert und in einem wählbaren Abstand vom ersten Spreizarm arretierbar ist, wobei an den anderen Enden der Spreizarme flächenförmige Spreizelemente mit Hilfe lösbarer Schraubverbindungen befestigt sind.The invention relates to a wound spreader with two essentially parallel spreading arms which are connected near one of their ends by a rod-shaped element, on which one spreading arm is rigid and on which the other spreading arm is displaceable in the direction of the extension of the rod-shaped element is stored and can be locked at a selectable distance from the first spreader arm, with sheet-like spreader elements being fastened to the other ends of the spreader arms with the aid of detachable screw connections.
Wundspreizer dienen dazu, bei der Operation die Wunde offen¬ zuhalten, damit an den freigelegten Organen Operationen durchgeführt werden können. Die Wunde wird dabei durch die flächenförmigen Spreizelemente, die sogenannten Valven offen¬ gehalten, die wiederum durch die Spreizarme in einem vor¬ wählbaren und arretierbaren Abstand voneinander gehalten werden.Wound spreaders serve to keep the wound open during the operation so that operations can be carried out on the exposed organs. The wound is held open by the sheet-like spreading elements, the so-called valves, which in turn are held at a preselectable and lockable distance from one another by the spreading arms.
Die Valven oder Spreizelemente sind dabei lösbar an den Spreizarmen befestigt, damit die Valven für den entsprechenden Operationszweck ausgewechselt werden können. Außerdem ist auf diese Weise eine gewünschte Winkeleinstellung der Valven in bezug auf die Spreizarme einstellbar. Diese Winkeleinstellung geschieht durch Drehen der Valven in bezug auf die Spreizarme und anschließendes Festschrauben der Valven an den Spreizarmen mit Hilfe von Rändelmuttern oder Flügelmuttern, so daß sich die Valven anschließend nicht mehr relativ zu den Spreizarmen drehen können.The valves or expansion elements are detachably attached to the expansion arms so that the valves can be replaced for the corresponding surgical purpose. In addition, a desired angle setting of the valves with respect to the spreading arms can be set in this way. This angle adjustment is done by turning the valves with respect to the spreader arms and then screwing the valves onto the spreading arms with the aid of knurled nuts or wing nuts, so that the valves can then no longer rotate relative to the spreading arms.
Bei dem starken Druck, den die Wundränder manchmal ausüben, ist es allerdings möglich, daß sich die Valven trotz fest angezogener Befestigungsschraube verdrehen. Dies ist hin¬ derlich für den Operateur, weil er sich mit Hilfe der fi¬ xierten Valven ein möglichst optimales Operationsfeld ein¬ stellen möchte.With the strong pressure that the wound edges sometimes exert, it is possible that the valves twist despite the tightening screw. This is a hindrance for the surgeon because he wants to use the fixed valves to set up the most optimal operating field possible.
Die Aufgabe der Erfindung besteht in der Schaffung eines Wundspreizers, bei dem trotz einstellbarer WinkelStellung der Valven in bezug auf die Spreizarme eine gewünschte Winkel¬ stellung einfach und zuverlässig fixiert werden kann.The object of the invention is to create a wound spreader in which, despite the adjustable angular position of the valves with respect to the spreading arms, a desired angular position can be fixed simply and reliably.
Die erfindungsgemäße Lösung besteht darin, daß die Spreizele¬ mente und die Spreizarme im Bereich der Schraubverbindung mit ineinandergreifenden Verzahnungen versehen sind.The solution according to the invention consists in that the expansion elements and the expansion arms are provided with interlocking teeth in the area of the screw connection.
Durch Lösen der Schraubverbindung können die Valven wie bei vorbekannten Wundspreizern ausgewechselt werden. Nach teil¬ weisem Lösen der Schraubverbindung kann ein gewünschter Winkel eingestellt werden. Zieht man die Schraubverbindung anschlie¬ ßend wieder fest, so wird aufgrund der ineinandergreifenden Verzahnungen die Winkeleinstellung zuverlässig fixiert.By loosening the screw connection, the valves can be replaced as with previously known wound spreaders. After partially loosening the screw connection, a desired angle can be set. If the screw connection is then tightened again, the angle setting is reliably fixed due to the interlocking teeth.
Man erhält also mit einfachen Mitteln eine sehr zuverlässige Verbindung und ein sehr vorteilhaft für Operationszwecke einzusetzendes Instrument.A very reliable connection and an instrument which can be used very advantageously for surgical purposes are thus obtained with simple means.
Vorteilhafterweise sind die Verzahnungen an senkrecht zur Schraube der Schraubverbindung ausgerichteten Flächen der Spreizarme und Spreizelemente vorgesehen. Die Verzahnungen befinden sich also auf einander gegenüberstehenden Stirnflä¬ chen der Verbindungselemente an Spreizarmen und Spreizelementen bzw. an entsprechenden Teilen derselben, mit denen die Verbindung hergestellt wird.The teeth are advantageously provided on surfaces of the spreading arms and spreading elements which are oriented perpendicular to the screw of the screw connection. The toothings are thus located on mutually opposite end faces of the connecting elements on spreading arms and Spreading elements or on corresponding parts of the same with which the connection is made.
Bei einer anderen Ausführungsform kann vorgesehen sein, daß jeder Spreizarm einen zylinderförmigen, zur Schraube der Schraubverbindung koaxialen, zum daran befestigten Spreizele¬ ment gerichteten Vorsprung und jedes Spreizelement eine zylinderförmige, zur Schraube der Schraubverbindung koaxiale, zum damit verbundenen Spreizarm gerichtete Ausnehmung auf¬ weist, wobei die Verzahnungen an den Zylindermantelflächen vorgesehen sind. Es ist auch möglich, die Spreizarme mit der Ausnehmung und die Spreizelemente mit den VorSprüngen zu versehen.In another embodiment, it can be provided that each spreader arm has a cylindrical projection which is coaxial with the screw of the screw connection and is attached to the spreader element fastened thereon, and each spreader element has a cylindrical recess which is coaxial with the screw of the screw connection and is directed towards the spreader arm connected thereto. wherein the teeth are provided on the cylinder jacket surfaces. It is also possible to provide the spreader arms with the recess and the spreader elements with the projections.
Schließlich können die Verzahnungen an den Zylindermantelflä¬ chen mit entsprechenden Verzahnungen an den Zylinderstirnflä¬ chen kombiniert werden.Finally, the toothings on the cylinder jacket surfaces can be combined with corresponding toothings on the cylinder end faces.
Die Erfindung wird im folgenden anhand einer vorteilhaften Ausführungsform unter Bezugnahme auf die beigefügten Zeich¬ nungen beschrieben. Es zeigen:The invention is described below on the basis of an advantageous embodiment with reference to the accompanying drawings. Show it:
Fig. 1 in perspektivischer Ansicht einen Wundspreizer der Erfindung, undFig. 1 is a perspective view of a wound spreader of the invention, and
Fig. 2 einen Längsschnitt durch einen Spreizarm und ein Spreizelement, der die Verbindung dieser beiden Teile im Detail zeigt.Fig. 2 shows a longitudinal section through an expansion arm and an expansion element, which shows the connection of these two parts in detail.
Der Wundspreizer besteht aus zwei im wesentlichen parallelen Spreizarmen 1, 2, die zweiteilig ausgebildet sind. Beide Spreizarme 1, 2 bestehen aus zwei länglichen Elementen 3, 4, die jeweils durch ein Gelenk 5 miteinander verbunden sind, um so das Instrument vielseitiger für verschiedene Operations¬ zwecke einsetzen zu können. Der Teil 3 jedes Spreizarmes 1, 2 ist mit einer Zahnstange 6 verbunden. Der Teil 3 des Spreizarmes 2 ist mit dieser Stange 6 starr verbunden, während der Arm 3 des anderen Spreizarmes 1 auf dieser Zahnstange 6 gleiten kann. Mit Hilfe eines mit einer Schraube 7 zu betätigenden Zahnradantriebes kann der Spreizarm 1 dabei entlang der Zahnstange hin- und herbewegt werden, so daß durch Drehen an der Schraube 7 der Abstand der Spreizarme 1, 2 vergrößert werden kann, um die Wunde zu spreizen. Durch eine federbelastete Klinke 8 wird dabei verhindert, daß sich die Arme 1, 2 wieder einander nähern; diese Klinke 8 rastet bei Vergrößerung des Abstandes nachein¬ ander in aufeinanderfolgendende Zähne der Zahnstange 6 ein. Soll der Abstand wieder verringert werden, so braucht man lediglich die Klinke 8 außer Eingriff mit der Verzahnung der Zahnstange 6 zu bringen, indem man auf den in Fig. 1 linken Teil der Klinke 8 drückt, der nach oben absteht.The wound spreader consists of two essentially parallel spreading arms 1, 2, which are formed in two parts. Both spreader arms 1, 2 consist of two elongated elements 3, 4, each of which is connected to one another by a joint 5, so that the instrument can be used more flexibly for different surgical purposes. The part 3 of each spreader arm 1, 2 is connected to a rack 6. The part 3 of the spreader arm 2 is rigidly connected to this rod 6, while the arm 3 of the other spreader arm 1 can slide on this rack 6. With the aid of a gear drive to be operated with a screw 7, the spreading arm 1 can be moved back and forth along the rack, so that the distance between the spreading arms 1, 2 can be increased by turning the screw 7 in order to spread the wound. A spring-loaded pawl 8 prevents the arms 1, 2 from approaching each other again; this pawl 8 engages one after the other in successive teeth of the rack 6 when the distance is increased. If the distance is to be reduced again, it is only necessary to bring the pawl 8 out of engagement with the toothing of the rack 6 by pressing on the part of the pawl 8 on the left in FIG. 1 which protrudes upwards.
An den Teilen 4 der Arme 1, 2 sind Spreizelemente 9, soge¬ nannte Valven befestigt, die ausgetauscht werden können, um für jeden Operationszweck die geeigneten Valven verwenden zu können.Spreading elements 9, so-called valves, are fastened to the parts 4 of the arms 1, 2 and can be exchanged in order to be able to use the suitable valves for every purpose of the operation.
Die erfindungsgemäßen Einzelheiten der Befestigung der Valven 9 an den Spreizarmen 1, 2 sind in Fig. 2 deutlicher gezeigt.The details according to the invention of fastening the valves 9 to the spreading arms 1, 2 are shown more clearly in FIG. 2.
An den Valven 9 ist eine Schraube 10 befestigt, die durch eine entsprechende Bohrung 11 des Teiles 4 hindurchgeht. Die Befestigung bzw. Festlegung in einer gewünschten Stellung erfolgt dabei durch Drehen an der Flügelmutter 12.A screw 10 is fastened to the valve 9 and passes through a corresponding bore 11 in the part 4. The attachment or fixing in a desired position is carried out by turning the wing nut 12.
Damit sich die Valven 9 nicht verdrehen können, weisen sie einen zylinderförmigen, mit einer Verzahnung an der Zylinder¬ mantelfläche versehenen Vorsprung 13 auf, der in eine ent¬ sprechende Ausnehmung 14, die ebenfalls zylinderförmig und verzahnt ist, des Teils 14 eingreift. Auf diese Weise wird durch Festdrehen der Flügelmutter 12 eine drehfeste Verbindung erreicht. Solle ein anderer Winkel eingestellt werden, so wird die Flügelmutter 12 so weit gelöst, bis die in Fig. 2 gezeigte Stellung erreicht ist. Das Spreizelement 9 kann dann in bezug auf Spreizarmteil 4 in die gewünschte Stellung gedreht werden. Anschließend erfolgt dann die Fixierung in dieser Stellung durch erneutes Festdrehen der Flügelmutter 12.So that the valves 9 cannot twist, they have a cylindrical projection 13 provided with a toothing on the cylindrical surface, which engages in a corresponding recess 14, which is also cylindrical and toothed, of the part 14. In this way, a non-rotatable connection is achieved by tightening the wing nut 12. If a different angle is to be set, then the wing nut 12 loosened until the position shown in FIG. 2 is reached. The expansion element 9 can then be rotated in relation to the expansion arm part 4 in the desired position. The fixing in this position is then carried out by tightening the wing nut 12 again.
Die Verzahnungen könnten anstelle der Verzahnung an der Zylinderwand oder zusätzlich dazu auch an den Stirnflächen der Teile 13 und 14 vorgesehen sein. Falls eine solche Verzahnung lediglich an den Stirnflächen vorgesehen ist, könnte selbst¬ verständlich auch auf zylinderförmigen Vorsprung 13 und zylinderför ige Ausnehmung 14 verzichtet werden. Es wäre auch möglich, den zylinderförmigen Vorsprung 13 am Teil 4 und die zylinderförmige Ausnehmung 14 am Teil 9 vorzusehen. The toothing could be provided instead of the toothing on the cylinder wall or additionally to the end faces of the parts 13 and 14. If such toothing is only provided on the end faces, it would of course also be possible to dispense with a cylindrical projection 13 and a cylindrical recess 14. It would also be possible to provide the cylindrical projection 13 on part 4 and the cylindrical recess 14 on part 9.

Claims

Patentansprüche Claims
1. Wundspreizer mit zwei im wesentlichen parallelen Spreiz¬ armen, die in der Nähe einer ihrer Enden durch ein stangenförmiges Element verbunden sind, an dem der eine Spreizarm starr und an dem der andere Spreizarm in Rich¬ tung der Erstreckung des stangenförmigen Elementes ver- schieblich gelagert und in einem wählbaren Abstand vom ersten Spreizarm arretierbar ist wobei an den anderen Enden der Spreizarme flächenförmige Spreizelemente mit Hilfe lösbarer Schraubverbindungen befestigt sind, dadurch gekennzeichnet, daß die Spreizelemente (9) und die Spreizarme (1, 2) im Bereich der Schraubverbindung (10, 12) mit ineinandergreifenden Verzahnungen versehen sind.1. Wound spreader with two essentially parallel spreading arms which are connected near one of their ends by a rod-shaped element, on which the one spreading arm is rigid and on which the other spreading arm is displaceable in the direction of the extension of the rod-shaped element is stored and can be locked at a selectable distance from the first spreader arm, sheet-like spreader elements being fastened to the other ends of the spreader arms with the aid of detachable screw connections, characterized in that the spreader elements (9) and the spreader arms (1, 2) in the region of the screw connection (10 , 12) are provided with interlocking teeth.
2. Wundspreizer nach Anspruch 1, dadurch gekennzeichnet, daß Verzahnungen an senkrecht zur Schraube der Schraubverbin¬ dung (10, 12) ausgerichteten Flächen der Spreizarme (1, 2) und Spreizelemente (9) vorgesehen sind.2. Wound spreader according to claim 1, characterized in that toothings are provided on surfaces of the spreading arms (1, 2) and spreading elements (9) which are oriented perpendicular to the screw of the screw connection (10, 12).
3. Wundspreizer nach Anspruch 1 oder 2, dadurch gekennzeich¬ net, daß jeder Spreizarm (1, 2) einen zylinderförmigen, zur Schraube (10) der Schraubverbindung (10, 12) koaxi¬ alen, zum daran befestigten Spreizelement (9) gerichteten Vorsprung und jedes Spreizelement (9) eine zylinderförmige zur Schraube (10) der Schraubverbindung (10, 12) koaxiale, zum damit verbundenen Spreizarm (1, 2) gerichtete Ausnehmung aufweist, wobei die Verzahnungen an den Zylin¬ dermantelflächen vorgesehen sind. 3. Wound spreader according to claim 1 or 2, characterized gekennzeich¬ net that each spreader arm (1, 2) has a cylindrical, to the screw (10) of the screw connection (10, 12) coaxial, to the attached expansion element (9) directed projection and each expansion element (9) has a cylindrical recess which is coaxial to the screw (10) of the screw connection (10, 12) and directed to the expansion arm (1, 2) connected to it, the toothings being provided on the cylindrical outer surfaces.
4. Wundspreizer nach Anspruch 1 oder 2, dadurch gekennzeich¬ net, daß jeder Spreizarm (1, 2) eine zylinderförmige, zur Schraube (10) der Schraubverbindung (10, 12) koaxiale, zum daran befestigten Spreizelement (9) gerichtete Ausnehmung (14) und jedes Spreizelement (9) einen zylinderförmigen zur Schraube (10) der Schraubverbindung (10, 12) koaxi¬ alen, zum damit verbundenen Spreizarm (1, 2) gerichteten Vorsprung (13) aufweist, wobei die Verzahnungen an den Zylindermantelflächen vorgesehen sind. 4. Wound spreader according to claim 1 or 2, characterized gekennzeich¬ net that each expansion arm (1, 2) has a cylindrical, to the screw (10) of the screw connection (10, 12) coaxial, to the attached expansion element (9) directed recess (14 ) and each expansion element (9) has a cylindrical projection (13) coaxial to the screw (10) of the screw connection (10, 12) and directed to the expansion arm (1, 2) connected to it, the toothings being provided on the cylinder jacket surfaces.
PCT/EP1989/001284 1988-10-31 1989-10-27 Retractor WO1990004947A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8813652U DE8813652U1 (en) 1988-10-31 1988-10-31 Retractor
DEG8813652.3U881031 1988-10-31

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690067A1 (en) * 1992-04-17 1993-10-22 Jbs Sa Adjustable surgical spacing and/or positioning instrument - comprises pair of arms with adjustable spacing levers, connected together by slideway with rapid-action spring-biassed fastening assembly
EP0632997A1 (en) * 1993-07-02 1995-01-11 Wesley L Coker Spinal surgery retractor
EP0698374A2 (en) * 1994-07-19 1996-02-28 International Surgical Technology, Inc. Apparatus for direct access endoscopic surgery
EP1006887A1 (en) * 1996-09-25 2000-06-14 Genzyme Corporation Rib retractor
FR2821543A1 (en) * 2001-03-01 2002-09-06 Stryker Spine Sa Spinal osteosynthesis apparatus regulator has rack and lock with catches to adjust positions of two arms
US9795370B2 (en) 2014-08-13 2017-10-24 Nuvasive, Inc. Minimally disruptive retractor and associated methods for spinal surgery

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
CA1313982C (en) * 1988-07-29 1993-03-02 Gary Karlin Michelson Spinal retractor

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Publication number Priority date Publication date Assignee Title
US3384077A (en) * 1965-01-22 1968-05-21 William K. Gauthier Abdominal retractor device
DE2951664A1 (en) * 1979-12-21 1981-07-02 Max Bernhard 7900 Ulm Ulrich Medical instrument with two adjustable and lockable arms - has housing on one arm, slidably guided on other arm rail, with spring loaded lock release member
US4627421A (en) * 1984-08-03 1986-12-09 Symbas Panagiotis N Sternal retractor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384077A (en) * 1965-01-22 1968-05-21 William K. Gauthier Abdominal retractor device
DE2951664A1 (en) * 1979-12-21 1981-07-02 Max Bernhard 7900 Ulm Ulrich Medical instrument with two adjustable and lockable arms - has housing on one arm, slidably guided on other arm rail, with spring loaded lock release member
US4627421A (en) * 1984-08-03 1986-12-09 Symbas Panagiotis N Sternal retractor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2690067A1 (en) * 1992-04-17 1993-10-22 Jbs Sa Adjustable surgical spacing and/or positioning instrument - comprises pair of arms with adjustable spacing levers, connected together by slideway with rapid-action spring-biassed fastening assembly
EP0632997A1 (en) * 1993-07-02 1995-01-11 Wesley L Coker Spinal surgery retractor
EP0698374A2 (en) * 1994-07-19 1996-02-28 International Surgical Technology, Inc. Apparatus for direct access endoscopic surgery
EP0698374A3 (en) * 1994-07-19 1996-03-13 Int Surgical Tech Inc
EP1006887A1 (en) * 1996-09-25 2000-06-14 Genzyme Corporation Rib retractor
EP1006887A4 (en) * 1996-09-25 2001-08-08 Genzyme Corp Rib retractor
FR2821543A1 (en) * 2001-03-01 2002-09-06 Stryker Spine Sa Spinal osteosynthesis apparatus regulator has rack and lock with catches to adjust positions of two arms
US9795370B2 (en) 2014-08-13 2017-10-24 Nuvasive, Inc. Minimally disruptive retractor and associated methods for spinal surgery
US9962147B2 (en) 2014-08-13 2018-05-08 Nuvasive, Inc. Minimally disruptive retractor and associated methods for spinal surgery
US10660628B2 (en) 2014-08-13 2020-05-26 Nuvasive, Inc. Minimally disruptive retractor and associated methods for spinal surgery
US11399816B2 (en) 2014-08-13 2022-08-02 Nuvasive, Inc. Minimally disruptive retractor and associated methods for spinal surgery

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