WO1992018055A1 - Tissue retractor device for medical and surgical operations - Google Patents

Tissue retractor device for medical and surgical operations Download PDF

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Publication number
WO1992018055A1
WO1992018055A1 PCT/CH1992/000068 CH9200068W WO9218055A1 WO 1992018055 A1 WO1992018055 A1 WO 1992018055A1 CH 9200068 W CH9200068 W CH 9200068W WO 9218055 A1 WO9218055 A1 WO 9218055A1
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WO
WIPO (PCT)
Prior art keywords
branches
disc
adjustment
adjustment mechanism
engaged
Prior art date
Application number
PCT/CH1992/000068
Other languages
French (fr)
Inventor
Leonid F. Linnik
Gennady M. Antropov
Vladimir V. Ippolitov
Valentin F. Streltzov
Original Assignee
Ciposa Microtechniques S.A.
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.)
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Publication date
Application filed by Ciposa Microtechniques S.A. filed Critical Ciposa Microtechniques S.A.
Publication of WO1992018055A1 publication Critical patent/WO1992018055A1/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
    • A61B17/0231—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for eye surgery

Definitions

  • the present invention relates to a device for spreading tissues, in particular of the eyelids or of the lips of a surgical notch for medical care or surgical interventions, this device comprising two flexible branches connected to their base and carrying a retaining element disposed at their end. free.
  • eyelid retractor which is commonly used and which also comprises two branches articulated at one of their ends and carrying two claws at their free end intended to bear against the edges of the eyelids to keep them open for a surgical intervention.
  • a stop and blocking screw makes it possible to maintain the branches in a determined open position, which avoids subjecting the eyelids to a permanent tension as in the case of the device described above.
  • the adjustment of the opening of the branches is carried out manually by the caregiver and the implementation of the locking screw is a troublesome and unpleasant manipulation for the patient, since the eye constitutes a particularly intervention area. delicate and that any rough handling of the device causes inconvenience for the patient.
  • the present invention overcomes these various drawbacks by providing a device equipped with "fine adjustment means eliminating both the permanent stresses exerted by the device on the fabrics intended to be separated and also allowing the operator to adjust so specifies the opening of the retractor without exerting any trauma on the patient.
  • the device according to the invention characterized in that it is provided with a mechanism for adjusting the spacing of these branches, this mechanism being provided with guide means for moving continuously and regular the ends of these branches and to automatically maintain them in any position between a first position corresponding to the minimum opening of the branches and a second position corresponding to their maximum opening.
  • said adjustment mechanism comprises a rotary flat disc provided with at least one helical groove and at least one follower stud engaged in this groove and integral with one of the flexible branches.
  • Each of said branches preferably comprises a follower stud engaged in said helical groove.
  • said adjustment mechanism comprises a rotary adjustment disc to which is coupled said rotary flat disc provided with a helical groove.
  • This rotary adjustment disc may include peripheral grooves.
  • each branch has a straight section, an oblique extension and a retaining element disposed at the free end of the branch, the branches being connected by a base comprising two flexible rounded sections.
  • this base has a central leg carrying the adjustment mechanism.
  • This adjustment mechanism may include a housing secured to the central leg, a rotary adjustment disc, a rotary flat disc coupled to the adjustment disc by means of an axial stud, this rotary flat disc being provided with a helical groove in which are engaged two follower pins respectively secured to the flexible and diametrically opposite branches.
  • the temples can be made in one piece from molded synthetic material with the base and the central leg.
  • FIG. 1 represents a perspective view of the device according to the invention
  • FIG. 2 represents a top view of the device of the invention
  • FIG. 3 represents a view partially cut along an axial plane of the device according to the invention.
  • Figure 4 shows a view of the device cut along a transverse plane through the branch spacing control mechanism.
  • the spacer device 10 essentially comprises two flexible branches 11 and 12 connected to their base 13 so that the device has the general shape of a U.
  • the branches 11 and 12 each comprise a rectilinear section 11a, respectively 12a, substantially rigid, an oblique extension 11b, respectively 12b, and an element of retaining link, respectively 12c, disposed at the free end of the oblique extensions or, ultimately, of the branches 11 and 12, since the straight sections, the oblique extensions and the retaining elements are made in one piece and constitute the .
  • the base 13 comprises two rounded sectors 13a and
  • the two rounded sectors 13a and 13b have a reduced section which gives them the flexibility required to allow controlled spacing of the branches 11 and 12.
  • This spacing is obtained by an adjustment mechanism 15 housed in a housing 16 attached to the central leg 14 and which comprises an adjustment disc 17, rotatable relative to the housing 16 and arranged to ensure precise and continuous adjustment of the angle of the opening of branches 11 and 12.
  • Figure 2 shows the device seen from above in its rest position. It can be seen that the two branches 11 and 12, as well as the central leg 14, are parallel to each other and to the longitudinal axis of the device.
  • the adjustment disc 17 has peripheral grooves 18 which allow the caregiver to easily turn it in order to ensure precise adjustment of the opening of the branches 11 and 12 without hampering or generating trauma in the patient.
  • the adjustment disc 17 is made integral, by means of an axial stud 19, with a guide element having the form of a flat disc 20 provided with a shaped groove spiral 21 in which are engaged two follower pins 22 and 23 integral with the branches 11 and 12. In this way, the rotation of the adjusting disc 17 causes an identical rotation of the flat disc 20.
  • the opening or closing of the branches 11 and 12 is controlled by the follower pins 22 and 23 which are engaged in the helical groove 21 and which, as a result, are pushed outwards, that is to say respectively in the directions defined by the arrows A and B when the disc rotates in the direction of arrow C or brought inward, that is to say in opposite directions to those of arrows A and B and when the adjusting disc 17 is rotated in the direction of arrow D.
  • the groove is unique and occupies practically the entire surface of the flat disc 20.
  • the two pins are engaged in this groove and the opening or closing of the two branches 11 and 12 takes place simultaneously.
  • each stud is engaged in another groove having a cam function, or that it is pressed against an appropriately profiled cam.
  • the branches 11, 12 and the foot 14 are partially hollowed out.
  • the retaining elements are curved so as to ensure the best possible grip on the tissues that they are required to retain.
  • the mechanism allows an extremely smooth, easy and precise adjustment of the branch spacing. Due to the geometry of the spiral, it is possible to obtain a significant reduction in the movement, that is to say that a rotation of a large amplitude of the adjustment disc corresponds to a variation of the opening angle of the relatively small branches. This has the consequence of allowing a particularly easy manipulation of the device since the force to be exerted on the adjusting disc to modify the spacing of the branches is particularly low. Thanks to this small effort necessary to ensure the precise adjustment of the spacing of the branches, the patient no longer suffers from discomfort and trauma.
  • each position of the branches is stable, which avoids the need for locking or clamping devices of the branch opening mechanism.
  • the pressure exerted by the fabrics on the retaining elements disposed at the free ends of the branches can in no case cause an undesirable rotation of the adjusting disc, so that the pins 22 and 23 engaged in the groove 21 constitute at both guide means and means for locking in position the branches of the device.
  • All the parts of this device can be molded and made of sterilizable synthetic materials therefore compatible with medical and surgical use, and light, which make the device disposable and economical to manufacture.
  • the adjustment mechanism is very reliable and easy to use, which results in increased comfort of use for both the caregiver and the patient.

Abstract

A tissue retractor device (10) particularly suitable for the lips or cheeks of a surgical wound and used to allow medical treatment or surgical operations essentially comprises two arms (11, 12) and a retractor adjustment mechanism (15). Said mechanism comprises a flat disc (20) rigidly fixed to an adjusting disc (17) and provided with a helical groove (21) engaged by two follower projections (22, 23) which are rigidly fixed to the two arms (11, 12). Rotation of the adjusting disc (17) allows the opening or closing of the arms (11, 12) to be continuously and accurately adjusted.

Description

DISPOSITIF ECARTEUR DE TISSUS POUR INTERVENTIONS MEDICALES ET CHIRURGICALES TISSUE SPREADING DEVICE FOR MEDICAL AND SURGICAL INTERVENTIONS
La présente invention concerne un dispositif écarteur de tissus , notamment de paupières ou de lèvres d'une entaille chirurgicale pour des soins médicaux ou des interventions chirurgicales , ce dispositif comportant deux branches souples reliées à leur base et portant un élément de retenue disposé à leur extrémité libre.The present invention relates to a device for spreading tissues, in particular of the eyelids or of the lips of a surgical notch for medical care or surgical interventions, this device comprising two flexible branches connected to their base and carrying a retaining element disposed at their end. free.
On connaît déjà divers dispositifs de ce type commercialisés sous la désignation d'écarteurs de paupières et qui ont pour but de maintenir les paupières en position ouverte afin de permettre au chirurgien d'accéder au globe oculaire et d'y effectuer l'intervention requise. Un de ces dispositifs connus est illustré par la demande internationale de brevet publiée sous le numéro WO 89/05131. Ce dispositif comporte des branches articulées dont l'extrémité est équipée de cuillères incurvées conçues pour accrocher les paupières et pour les maintenir ouvertes. Les branches sont solidaires d'un boîtier contenant un ressort qui exerce une contrainte permanente sur les cuillères de manière à les solliciter en permanence dans le sens de l'ouverture des paupières . Ce dispositif présente l'inconvénient de transmettre les tensions exercées par le ressort sur les paupières , ce qui représente une gêne pour le patient et peut aboutir à des traumatismes au niveau de l'oeil.Various devices of this type are already known, marketed under the designation of eyelid spacers and which aim to maintain the eyelids in the open position in order to allow the surgeon to access the eyeball and perform the required intervention therein. One of these known devices is illustrated by the international patent application published under the number WO 89/05131. This device comprises articulated branches, the end of which is equipped with curved spoons designed to hang the eyelids and to keep them open. The arms are secured to a housing containing a spring which exerts a permanent stress on the spoons so as to permanently urge them in the direction of the opening of the eyelids. This device has the drawback of transmitting the tensions exerted by the spring on the eyelids, which represents discomfort for the patient and can lead to trauma in the eye.
II existe un autre écarteur de paupières qui est couramment utilisé et qui comporte également deux branches articulées à une de leurs extrémités et portant deux griffes à leur extrémité libre destinées à s'appuyer contre les bords des paupières pour les maintenir ouvertes en vue d'une intervention chirurgicale. Une vis d'arrêt et de blocage permet de maintenir les branches dans une position d'ouverture déterminée, ce qui évite de soumettre les paupières à une tension permanente comme dans le cas du dispositif décrit ci-dessus . Néanmoins , le réglage de l'ouverture des branches est effectuée manuellement par le soignant et la mise en oeuvre de la vis de blocage est une manipulation gênante et désagréable pour le patient, étant donné que l'oeil constitue une zone d'intervention particulièrement délicate et que toute manipulation brusque du dispositif engendre des désagréments pour le patient.There is another eyelid retractor which is commonly used and which also comprises two branches articulated at one of their ends and carrying two claws at their free end intended to bear against the edges of the eyelids to keep them open for a surgical intervention. A stop and blocking screw makes it possible to maintain the branches in a determined open position, which avoids subjecting the eyelids to a permanent tension as in the case of the device described above. However, the adjustment of the opening of the branches is carried out manually by the caregiver and the implementation of the locking screw is a troublesome and unpleasant manipulation for the patient, since the eye constitutes a particularly intervention area. delicate and that any rough handling of the device causes inconvenience for the patient.
La présente invention permet de pallier ces différents inconvénients en réalisant un dispositif équipé de moyens de réglage" fins supprimant à la fois les contraintes permanentes exercées par le dispositif sur les tissus destinés à être écartés et permettant par ailleurs à l'intervenant de régler de façon précise l'ouverture de l' écarteur sans pour autant exercer un quelconque traumatisme sur le patient.The present invention overcomes these various drawbacks by providing a device equipped with "fine adjustment means eliminating both the permanent stresses exerted by the device on the fabrics intended to be separated and also allowing the operator to adjust so specifies the opening of the retractor without exerting any trauma on the patient.
Ce but est atteint par le dispositif selon l'invention, caractérisé en ce qu'il est pourvu d'un mécanisme de réglage de l'écartement de ces branches , ce mécanisme étant pourvu de moyens de guidage pour déplacer d'une façon continue et régulière les extrémités de ces branches et pour les maintenir automatiquement dans n'importe quelle position entre une première position correspondant à l'ouverture minimale des branches et une deuxième position correspondant à leur ouverture maximale.This object is achieved by the device according to the invention, characterized in that it is provided with a mechanism for adjusting the spacing of these branches, this mechanism being provided with guide means for moving continuously and regular the ends of these branches and to automatically maintain them in any position between a first position corresponding to the minimum opening of the branches and a second position corresponding to their maximum opening.
Selon une forme de réalisation particulièrement avantageuse, ledit mécanisme de réglage comporte un disque plat rotatif pourvu d'au moins une rainure hélicoïdale et d'au moins un téton suiveur engagé dans cette rainure et solidaire de l'une des branches souples.According to a particularly advantageous embodiment, said adjustment mechanism comprises a rotary flat disc provided with at least one helical groove and at least one follower stud engaged in this groove and integral with one of the flexible branches.
Chacune desdites branches comporte de préférence un téton suiveur engagé dans ladite rainure hélicoïdale.Each of said branches preferably comprises a follower stud engaged in said helical groove.
Selon cette forme de réalisation préférée, ledit mécanisme de réglage comporte un disque de réglage rotatif auquel est couplé ledit disque plat rotatif pourvu d'une rainure hélicoïdale. Ce disque de réglage rotatif peut comporter des cannelures périphériques.According to this preferred embodiment, said adjustment mechanism comprises a rotary adjustment disc to which is coupled said rotary flat disc provided with a helical groove. This rotary adjustment disc may include peripheral grooves.
Dans cette forme de réalisation chaque branche comporte un tronçon rectiligne, un prolongement oblique et un élément de retenue disposé à l'extrémité libre de la branche, les branches étant reliées par une base comportant deux tronçons arrondis flexibles. De préférence cette base comporte un pied central portant le mécanisme de réglage.In this embodiment, each branch has a straight section, an oblique extension and a retaining element disposed at the free end of the branch, the branches being connected by a base comprising two flexible rounded sections. Preferably this base has a central leg carrying the adjustment mechanism.
Ce mécanisme de réglage peut comporter un boîtier solidaire du pied central, un disque de réglage rotatif , un disque plat rotatif couplé axt disque de réglage au moyen d'un téton axial, ce disque plat rotatif étant pourvu d'une rainure hélicoïdale dans laquelle sont engagés deux tétons suiveurs respectivement solidaires des branches souples et diamétralement opposés.This adjustment mechanism may include a housing secured to the central leg, a rotary adjustment disc, a rotary flat disc coupled to the adjustment disc by means of an axial stud, this rotary flat disc being provided with a helical groove in which are engaged two follower pins respectively secured to the flexible and diametrically opposite branches.
Les branches peuvent être réalisées d'une pièce en matière synthétique moulée avec la base et le pied central.The temples can be made in one piece from molded synthetic material with the base and the central leg.
La présente invention sera mieux comprise en référence à la description d'une forme de réalisation préférée du dispositif selon l'invention et aux dessins annexés dans lesquels :The present invention will be better understood with reference to the description of a preferred embodiment of the device according to the invention and to the accompanying drawings in which:
La figure 1 représente une vue en perspective du dispositif selon l'invention,FIG. 1 represents a perspective view of the device according to the invention,
la figure 2 représente une vue de dessus du dispositif de l'invention,FIG. 2 represents a top view of the device of the invention,
la figure 3 représente une vue partiellement coupée selon un plan axial du dispositif selon l'invention, etFIG. 3 represents a view partially cut along an axial plane of the device according to the invention, and
la figure 4 représente une vue du dispositif coupée selon un plan transversal à travers le mécanisme de commande de l'écartement des branches .Figure 4 shows a view of the device cut along a transverse plane through the branch spacing control mechanism.
En référence aux figures , le dispositif écarteur 10 comporte essentiellement deux branches souples 11 et 12 reliées à leur base 13 de telle manière que le dispositif ait la forme générale d'un U . En réalité, les branches 11 et 12 comportent chacune un tronçon rectiligne lia, respectivement 12a, sensiblement rigide, un prolongement oblique 11b , respectivement 12b, et un élément de retenue lie, respectivement 12c, disposé à l'extrémité libre des prolongements obliques ou, en définitive, des branches 11 et 12, étant donné que les tronçons rectilignes , les prolongements obliques et les éléments de retenue sont réalisés d'une pièce et constituent les. deux branches 11 et 12. La base 13 comporte deux secteurs arrondis 13a etWith reference to the figures, the spacer device 10 essentially comprises two flexible branches 11 and 12 connected to their base 13 so that the device has the general shape of a U. In reality, the branches 11 and 12 each comprise a rectilinear section 11a, respectively 12a, substantially rigid, an oblique extension 11b, respectively 12b, and an element of retaining link, respectively 12c, disposed at the free end of the oblique extensions or, ultimately, of the branches 11 and 12, since the straight sections, the oblique extensions and the retaining elements are made in one piece and constitute the . two branches 11 and 12. The base 13 comprises two rounded sectors 13a and
13b et un tronçon central 13c auquel est raccordé un pied de support 14 qui s'étend selon une direction correspondant à l'axe longitudinal du dispositif. Les deux secteurs arrondis 13a et 13b ont une section réduite ce qui leur confère la flexibilité requise pour permettre l' écartement contrôlé des branches 11 et 12.13b and a central section 13c to which is connected a support leg 14 which extends in a direction corresponding to the longitudinal axis of the device. The two rounded sectors 13a and 13b have a reduced section which gives them the flexibility required to allow controlled spacing of the branches 11 and 12.
Cet écartement est obtenu grâce à un mécanisme de réglage 15 logé dans un boîtier 16 attaché au pied central 14 et qui comporte un disque de réglage 17, rotatif par rapport au boîtier 16 et agencé pour assurer un réglage précis et continu de l'angle de l'ouverture des branches 11 et 12.This spacing is obtained by an adjustment mechanism 15 housed in a housing 16 attached to the central leg 14 and which comprises an adjustment disc 17, rotatable relative to the housing 16 and arranged to ensure precise and continuous adjustment of the angle of the opening of branches 11 and 12.
La figure 2 montre le dispositif vu de dessus dans sa position de repos. On constate que les deux branches 11 et 12, ainsi que le pied central 14, sont parallèles entre eux et à l'axe longitudinal du dispositif. Le disque de réglage 17 comporte des cannelures périphériques 18 qui permettent au soignant de le tourner aisément afin d'assurer un réglage précis de l'ouverture des branches 11 et 12 sans gêner ou générer des traumatismes chez le patient.Figure 2 shows the device seen from above in its rest position. It can be seen that the two branches 11 and 12, as well as the central leg 14, are parallel to each other and to the longitudinal axis of the device. The adjustment disc 17 has peripheral grooves 18 which allow the caregiver to easily turn it in order to ensure precise adjustment of the opening of the branches 11 and 12 without hampering or generating trauma in the patient.
En référence aux figures 3 et 4, le disque de réglage 17 est rendu solidaire, par l'intermédiaire d'un téton axial 19, d'un élément de guidage ayant la forme d'un disque plat 20 pourvu d'une rainure en forme de spirale 21 dans laquelle sont engagés deux tétons suiveurs 22 et 23 solidaires des branches 11 et 12. De cette manière, la rotation du disque de réglage 17 entraîne une rotation identique du disque plat 20. L'ouverture ou la fermeture des branches 11 et 12 est commandée par les tétons suiveurs 22 et 23 qui sont engagés dans la rainure hélicoïdale 21 et qui, de ce fait, sont repoussés vers l'extérieur, c'est-à-dire respectivement dans les sens définis par les flèches A et B lorsque le disque tourne dans le sens de la flèche C ou ramené vers l'intérieur, c'est-à-dire dans des sens opposés à ceux des flèches A et B et lorsque le disque de réglage 17 est tourné dans le sens de la flèche D .With reference to FIGS. 3 and 4, the adjustment disc 17 is made integral, by means of an axial stud 19, with a guide element having the form of a flat disc 20 provided with a shaped groove spiral 21 in which are engaged two follower pins 22 and 23 integral with the branches 11 and 12. In this way, the rotation of the adjusting disc 17 causes an identical rotation of the flat disc 20. The opening or closing of the branches 11 and 12 is controlled by the follower pins 22 and 23 which are engaged in the helical groove 21 and which, as a result, are pushed outwards, that is to say respectively in the directions defined by the arrows A and B when the disc rotates in the direction of arrow C or brought inward, that is to say in opposite directions to those of arrows A and B and when the adjusting disc 17 is rotated in the direction of arrow D.
Dans l'exemple de réalisation illustré, la rainure est unique et occupe pratiquement toute la surface du disque plat 20. Les deux tétons sont engagés dans cette rainure et l'ouverture ou la fermeture des deux branches 11 et 12 s'effectue simultanément. On pourrait envisager que chaque téton soit engagé dans une autre rainure ayant une fonction de came, ou qu'il soit appuyé contre une came profilée de façon appropriée. On pourrait également envisager que seule une branche soit mobile, l'autre étant fixe. Dans ce cas, la branche mobile comporterait seule un téton engagé dans une rainure ou coopérant avec une came appropriée.In the illustrated embodiment, the groove is unique and occupies practically the entire surface of the flat disc 20. The two pins are engaged in this groove and the opening or closing of the two branches 11 and 12 takes place simultaneously. It could be envisaged that each stud is engaged in another groove having a cam function, or that it is pressed against an appropriately profiled cam. One could also consider that only one branch is mobile, the other being fixed. In this case, the movable branch would only have a stud engaged in a groove or cooperating with an appropriate cam.
Pour accroître la légèreté du dispositif, les branches 11 , 12 ainsi que le pied 14 sont partiellement évidés. Les éléments de retenue sont incurvés de façon à assurer la meilleure prise possible sur les tissus qu'ils sont amenés à retenir. Le mécanisme permet un réglage extrêmement doux, facile et précis de l' écartement des branches. En raison de la géométrie de la spirale, on peut obtenir une démultiplication importante du mouvement, c'est-à-dire qu'une rotation d'une grande amplitude du disque de réglage correspond à une variation de l'angle d'ouverture des branches relativement réduite. Ceci a pour conséquence de permettre une manipulation particulièrement aisée du dispositif puisque la force à exercer sur le disque de réglage pour modifier l' écartement des branches est particulièrement faible. Grâce à ce faible effort nécessaire pour assurer le réglage précis de l' écartement des branches, le patient ne subit plus de désagrément et de traumatisme. En outre, chaque position des branches est stable, ce qui permet d'éviter le recours à des dispositifs de blocage ou de serrage du mécanisme d'ouverture des branches. Enfin, la pression exercée par les tissus sur les éléments de retenue disposés aux extrémités libres des branches ne peut en aucun cas entraîner une rotation indésirable du disque de réglage, de sorte que les tétons 22 et 23 engagés dans ia rainure 21 constituent à la fois des moyens de guidage et des moyens de blocage en position des branches du dispositif.To increase the lightness of the device, the branches 11, 12 and the foot 14 are partially hollowed out. The retaining elements are curved so as to ensure the best possible grip on the tissues that they are required to retain. The mechanism allows an extremely smooth, easy and precise adjustment of the branch spacing. Due to the geometry of the spiral, it is possible to obtain a significant reduction in the movement, that is to say that a rotation of a large amplitude of the adjustment disc corresponds to a variation of the opening angle of the relatively small branches. This has the consequence of allowing a particularly easy manipulation of the device since the force to be exerted on the adjusting disc to modify the spacing of the branches is particularly low. Thanks to this small effort necessary to ensure the precise adjustment of the spacing of the branches, the patient no longer suffers from discomfort and trauma. In addition, each position of the branches is stable, which avoids the need for locking or clamping devices of the branch opening mechanism. Finally, the pressure exerted by the fabrics on the retaining elements disposed at the free ends of the branches can in no case cause an undesirable rotation of the adjusting disc, so that the pins 22 and 23 engaged in the groove 21 constitute at both guide means and means for locking in position the branches of the device.
Toutes les pièces de ce dispositif peuvent être moulées et réalisées en des matériaux synthétiques sterilisables donc compatibles avec une utilisation médicale et chirurgicale, et légers, qui rendent le dispositif jetable et de fabrication économique. Le mécanisme de réglage est d'une grande fiabilité et d'un maniement aisé, ce qui a pour conséquence un confort d'utilisation accru à la fois pour le soignant et pour le patient.All the parts of this device can be molded and made of sterilizable synthetic materials therefore compatible with medical and surgical use, and light, which make the device disposable and economical to manufacture. The adjustment mechanism is very reliable and easy to use, which results in increased comfort of use for both the caregiver and the patient.
La présente invention n'est pas limitée aux formes de réalisation décrites, mais peut subir différentes modifications et se présenter sous diverses variantes évidentes pour l'homme de l'art. The present invention is not limited to the embodiments described, but can undergo different modifications and come in various variants obvious to those skilled in the art.

Claims

REVENDICATIONS
1. Dispositif écarteur de tissus , notamment de paupières ou de lèvres d'une entaille chirurgicale pour des soins médicaux ou des interventions chirurgicales , ce dispositif comportant deux branches souples reliées à leur base et portant un élément dé retenue disposé à leur extrémité libre, caractérisé en ce qu'il est pourvu d'un mécanisme de réglage (15) de l'écartement de ces branches ( 12, 13) , ce mécanisme étant pourvu de moyens de guidage pour déplacer d'une façon continue et régulière les extrémités (11b , 12b) de ces branches et pour les maintenir automatiquement dans n'importe quelle position entre une première position correspondant à l'ouverture minimale des branches et une deuxième position correspondant à leur ouverture maximale .1. Device for spreading tissues, in particular of the eyelids or of the lips of a surgical cut for medical care or surgical interventions, this device comprising two flexible branches connected to their base and carrying a retaining element disposed at their free end, characterized in that it is provided with an adjustment mechanism (15) for the spacing of these branches (12, 13), this mechanism being provided with guide means for continuously and regularly moving the ends (11b , 12b) of these branches and to automatically maintain them in any position between a first position corresponding to the minimum opening of the branches and a second position corresponding to their maximum opening.
2. Dispositif selon la revendication 1 , caractérisé en ce que ledit mécanisme de réglage (15) comporte un disque plat rotatif (20) pourvu d'au moins une rainure hélicoïdale (21) et d'au moins un téton suiveur (22, 23) engagé dans cette rainure et solidaire de l'une des branches souples.2. Device according to claim 1, characterized in that said adjustment mechanism (15) comprises a rotary flat disc (20) provided with at least one helical groove (21) and at least one follower stud (22, 23 ) engaged in this groove and secured to one of the flexible branches.
3. Dispositif selon la revendication 2, caractérisé en ce que chacune desdites branches (12, 13) comporte un téton suiveur (22, 23) engagé dans ladite rainure hélicoïdale (21) .3. Device according to claim 2, characterized in that each of said branches (12, 13) comprises a follower stud (22, 23) engaged in said helical groove (21).
4. Dispositif selon la revendication 2, caractérisé en ce que ledit mécanisme de réglage (15) comporte un disque de réglage (17) rotatif auquel est couplé ledit disque plat rotatif (20) pourvu d'une rainure hélicoïdale (21) .4. Device according to claim 2, characterized in that said adjustment mechanism (15) comprises a rotary adjustment disc (17) to which is coupled said rotary flat disc (20) provided with a helical groove (21).
5. Dispositif selon la revendication 4, caractérisé en ce que le disque de réglage rotatif (17) comporte des cannelures périphériques (18) .5. Device according to claim 4, characterized in that the rotary adjustment disc (17) has peripheral grooves (18).
6. Dispositif selon la revendication 1 , caractérisé en ce que chaque branche comporte un tronçon rectiligne (lia, 12a) , un prolongement oblique (11b, 12b) et un élément de retenue (lie, 12c) disposé à l'extrémité libre de la branche, et en ce que les branches sont reliées par une base (13) comportant deux tronçons arrondis flexibles (13a, 13b) .6. Device according to claim 1, characterized in that each branch comprises a straight section (lia, 12a), an oblique extension (11b, 12b) and a retaining element (lie, 12c) disposed at the free end of the branch, and in that the branches are connected by a base (13) comprising two flexible rounded sections (13a, 13b).
7. Dispositif selon la revendication 6, caractérisé en ce que la base7. Device according to claim 6, characterized in that the base
(13) comporte un pied central (14) portant le mécanisme de réglage (15) .(13) has a central leg (14) carrying the adjustment mechanism (15).
8. Dispositif selon la revendication 7, caractérisé en ce que le mécanisme de réglage comporte un boîtier (16) solidaire du pied central (14) , un disque de réglage (17) rotatif , un disque plat rotatif (20) couplé au disque de réglage au moyen d'un téton axial (19) , ce disque plat rotatif (20) étant pourvu d'une rainure hélicoïdale (21) dans laquelle sont engagés deux tétons suiveurs (22 et 23) respectivement solidaires des branches souples (11 et 12) et diamétralement opposés.8. Device according to claim 7, characterized in that the adjustment mechanism comprises a housing (16) integral with the central leg (14), an adjustment disc (17) rotatable, a rotary flat disc (20) coupled to the disc adjustment by means of an axial stud (19), this rotary flat disc (20) being provided with a helical groove (21) in which are engaged two follower studs (22 and 23) respectively secured to the flexible branches (11 and 12 ) and diametrically opposite.
9. Dispositif selon la revendication 8, caractérisé en ce que les branches (12, 13) sont réalisées d'une pièce en matière synthétique moulée avec la base et le pied central (14) . 9. Device according to claim 8, characterized in that the branches (12, 13) are made in one piece from molded synthetic material with the base and the central leg (14).
PCT/CH1992/000068 1991-04-11 1992-04-10 Tissue retractor device for medical and surgical operations WO1992018055A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SU4926225/14A SU1824723A1 (en) 1991-04-11 1991-04-11 Eye lid expander
RU4926225 1991-04-11

Publications (1)

Publication Number Publication Date
WO1992018055A1 true WO1992018055A1 (en) 1992-10-29

Family

ID=21569049

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Application Number Title Priority Date Filing Date
PCT/CH1992/000068 WO1992018055A1 (en) 1991-04-11 1992-04-10 Tissue retractor device for medical and surgical operations

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SU (1) SU1824723A1 (en)
WO (1) WO1992018055A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429121A (en) * 1991-03-20 1995-07-04 Per Jettman Surgical retractor
EP0731669A4 (en) * 1992-12-11 1996-05-03 Tekdyne Inc Self-retaining retractor
FR2938420A1 (en) * 2008-11-17 2010-05-21 Sarl Paucaplast Eyelids maintaining device i.e. blepharostat, for patient during ophthalmic surgery, has hook integrated with splints, where hook elastically returns splints toward their nominal spacing
WO2011050352A1 (en) * 2009-10-23 2011-04-28 Beaver-Visitec International (Us), Inc. Speculum
EP2572646A3 (en) * 2011-09-21 2013-05-29 Beaver-Visitec International (US), Inc. Speculum with hinged portion
CN104135947A (en) * 2011-12-21 2014-11-05 医学设想公司 Surgical retractor systems
CN105596041A (en) * 2016-02-02 2016-05-25 郑明辉 Surgical plate-type distracter
CN107997794A (en) * 2017-12-02 2018-05-08 李茂菊 Medical multifunctional eye speculum

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB287529A (en) * 1927-03-23 1928-12-13 Paul Bernauer Apparatus for keeping wounds open
GB750583A (en) * 1954-08-03 1956-06-20 Genito Urinary Mfg Company Ltd Improvements in gearing devices particularly for operating thoracotomy retractors
US4130113A (en) * 1976-12-15 1978-12-19 Richards Manufacturing Co., Inc. Retractor
US4165746A (en) * 1977-06-30 1979-08-28 Burgin Kermit H Plastic forceps
DE3545845A1 (en) * 1985-12-23 1987-06-25 Bbc Brown Boveri & Cie Multi-phase protection circuit breaker having a device for setting the current range
SU1424809A1 (en) * 1986-11-13 1988-09-23 В. 3. Полетанский Arrangement for bringing together wound edges
US5054906A (en) * 1986-01-17 1991-10-08 Brimfield Precision, Inc. Indirectly illuminating ophthalmological speculum

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB287529A (en) * 1927-03-23 1928-12-13 Paul Bernauer Apparatus for keeping wounds open
GB750583A (en) * 1954-08-03 1956-06-20 Genito Urinary Mfg Company Ltd Improvements in gearing devices particularly for operating thoracotomy retractors
US4130113A (en) * 1976-12-15 1978-12-19 Richards Manufacturing Co., Inc. Retractor
US4165746A (en) * 1977-06-30 1979-08-28 Burgin Kermit H Plastic forceps
DE3545845A1 (en) * 1985-12-23 1987-06-25 Bbc Brown Boveri & Cie Multi-phase protection circuit breaker having a device for setting the current range
US5054906A (en) * 1986-01-17 1991-10-08 Brimfield Precision, Inc. Indirectly illuminating ophthalmological speculum
SU1424809A1 (en) * 1986-11-13 1988-09-23 В. 3. Полетанский Arrangement for bringing together wound edges

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429121A (en) * 1991-03-20 1995-07-04 Per Jettman Surgical retractor
EP0731669A4 (en) * 1992-12-11 1996-05-03 Tekdyne Inc Self-retaining retractor
EP0731669A1 (en) * 1992-12-11 1996-09-18 Tekdyne, Inc. Self-retaining retractor
FR2938420A1 (en) * 2008-11-17 2010-05-21 Sarl Paucaplast Eyelids maintaining device i.e. blepharostat, for patient during ophthalmic surgery, has hook integrated with splints, where hook elastically returns splints toward their nominal spacing
WO2011050352A1 (en) * 2009-10-23 2011-04-28 Beaver-Visitec International (Us), Inc. Speculum
US8652036B2 (en) 2009-10-23 2014-02-18 Beaver-Visitec International (Us), Inc. Speculum
EP2572646A3 (en) * 2011-09-21 2013-05-29 Beaver-Visitec International (US), Inc. Speculum with hinged portion
US9095322B2 (en) 2011-09-21 2015-08-04 Beaver-Visitec International (Us), Inc. Speculum with hinged portion
CN104135947A (en) * 2011-12-21 2014-11-05 医学设想公司 Surgical retractor systems
CN105596041A (en) * 2016-02-02 2016-05-25 郑明辉 Surgical plate-type distracter
CN107997794A (en) * 2017-12-02 2018-05-08 李茂菊 Medical multifunctional eye speculum
CN107997794B (en) * 2017-12-02 2021-04-23 青岛市市立医院 Medical multifunctional eyelid retractor

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