EP2086651A2 - Forceps for gripping and transporting small objects and usable in particular in dental surgery - Google Patents

Forceps for gripping and transporting small objects and usable in particular in dental surgery

Info

Publication number
EP2086651A2
EP2086651A2 EP07858412A EP07858412A EP2086651A2 EP 2086651 A2 EP2086651 A2 EP 2086651A2 EP 07858412 A EP07858412 A EP 07858412A EP 07858412 A EP07858412 A EP 07858412A EP 2086651 A2 EP2086651 A2 EP 2086651A2
Authority
EP
European Patent Office
Prior art keywords
jaws
self
flexible
pad
proximal
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.)
Ceased
Application number
EP07858412A
Other languages
German (de)
French (fr)
Inventor
Alexandre Muller
William Muller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WAM (SARL)
Original Assignee
WAM (SARL)
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 WAM (SARL) filed Critical WAM (SARL)
Publication of EP2086651A2 publication Critical patent/EP2086651A2/en
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/12—Tools for fastening artificial teeth; Holders, clamps, or stands for artificial teeth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/30—Surgical pincettes without pivotal connections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A61C7/02—Tools for manipulating or working with an orthodontic appliance
    • A61C7/04—Tools for manipulating or working with an orthodontic appliance plier-type, e.g. pincers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
    • A61C7/14—Brackets; Fixing brackets to teeth
    • A61C7/146—Positioning or placement of brackets; Tools therefor

Definitions

  • Gripper for grasping and transporting small objects, usable, in particular, in dental surgery.
  • the present invention relates to a gripper for the gripping and transport of small objects, usable, in particular, in dental surgery.
  • this clamp makes it possible, in particular, to grasp, to transport to the placing site and to set up, on this site, dental prosthesis parts of various shapes and dimensions such as, for example, crowns, bridges, implants, inlays, etc.
  • Grippers are also known whose jaws are provided with soft bearings (DE 10 2004 017 402, US-3 898 738, US-5,044,954, US-3,834,026, WO-01/66031, US-2006). / 0127835).
  • Grippers are also known, the jaws of which are brought into the nip position automatically under the elasticity effect of the limbs (DE-2004 017 402, US Pat. No. 4,035,919).
  • the invention aims to provide users and in particular to that of specialists in restorative dental surgery, a clamp for gripping and handling very safe small objects of various shapes such as, for example, dental prosthesis parts .
  • this object is achieved by means of a self-locking forceps comprising two freely crossing arms and comprising a proximal portion for maneuvering or a handle and a distal pinching portion extending on either side of the crossing zone.
  • the proximal portions being elastically joined at one of their ends and progressively diverging towards the crossing zone, while the distal portions are approximately parallel and terminate in jaws, so that the proximal or proximal portions are brought together; handles causes spacing of the distal portions, while releasing the pressure exerted on said proximal portions results in an automatic approximation of the distal portions and thus the jaws thereof in the clamping position;
  • at least one of said jaws is provided with a pad or lining of flexible material able to conform largely to the shape of the object or to adhere to the object pressed between the two jaws, at the end of the movement of approaching the latter ;
  • said self-locking pliers being provided with means for limiting the clamping force generated by the restoring force of the spring
  • clamping force before any manipulation by the practitioner.
  • the latter can first adjust the clamping force to obtain optimal and safe nipping of the object to be transported. Then, without any action or additional effort of the practitioner, self-tightening (automatic return to the pinch position) ensures the maintenance of this ideal force until the drop of the transported object. This avoids the effect "cherry kernel", without any effort or precaution or special attention of the user.
  • Figure 1 is a perspective view of an embodiment of a self-locking pliers to which the invention is applicable, the opposing jaws of this clamp being shown in spaced position.
  • FIG. 2 is a perspective view similar to FIG. 1 and showing the jaws of the auto-locking pliers in the approaching position.
  • Figure 3 is a partial view, in perspective and on an enlarged scale, illustrating an embodiment of the jaws of the clamp, for the removable attachment of a flexible material packing disposable type.
  • FIG. 4 is a perspective view of an exemplary embodiment of a flexible material packing of disposable type shaped for its removable assembly on a rigid jaw illustrated in FIG.
  • Figure 5 is a partial view, in perspective and on an enlarged scale, showing the jaws of the clamp provided with a flexible material packing disposable type.
  • Figure 6 is a perspective view illustrating the longitudinal gripping of a piece of dental prosthesis. - AT -
  • Figure 7 is a perspective view showing the transverse entry of a dental prosthesis part.
  • the term "flexible material” means a material preferably and non-limitingly, a degree of hardness allowing its deformation of at least one millimeter when applied to a pressure of less than 5N for a contact area of 50 mm 2 .
  • the clip illustrated is a self-locking pre-brake of the kind consisting of two limbs 1 and 2, crossing freely at their intermediate portion 3 and having a proximal operating portion or handle 1A, 2A and a distal portion pinch 1B, 2B, extending on either side of their crossing zone 3.
  • the branches 1 and 2 are essentially made of a metal having a capacity of flexibility.
  • Their proximal portions 1A, 2A are elastically assembled at one of their ends and gradually move away towards the crossing zone 3 of the branches 1 and 2. They constitute, in this way, a leaf spring type spring, so that their approximation requires the application of a convergent digital pressure applied, for example, by the thumb and forefinger of the practitioner's hand.
  • the distal portions 1 B, 2B are parallel or approximately parallel, so that the approximation of the proximal portions or handles 1A, 2A under the pressure exerted by the fingers ensures the spacing of said distal portions, while the relaxation of this pressure is translated by an automatic approximation of the distal portions 1 B, 2B and, consequently, a reconciliation of the jaws 4 and 5 which are provided, respectively, the free ends thereof.
  • the end portions of the distal portions 1 B, 2B of the branches 1, 2 may be curved or straight (as shown in the drawings).
  • At least one of the clamping jaws 4 and 5 is provided with a pad or lining of flexible material 6 adapted to conform to the shape of the object C pressed between the jaws 4 and 5, at the end of the movement of bringing them together .
  • each of the two jaws 4 and 5 of the clamp is provided with a pad or lining of flexible material 6.
  • the flexible liner 6 is made of a malleable material, sticky modeling paste, for example raw silicone.
  • the flexible lining 6 is made of an elastically deformable material or shape memory, for example flexible rubber, or elastomer foam.
  • one of the jaws 4 or 5 is provided with a flexible lining 6 made of a malleable material, while the other jaw 5 or 4 is provided with a flexible lining 6 made in a elastically deformable material.
  • the pad or pads of flexible material 6 is or are executed in a material having a self-adhesion capacity, for example silicone.
  • the flexible liner 6 may be fixed permanently or removably and interchangeably on the jaw (s) 4 and / or 5.
  • the permanent attachment as the removable and interchangeable attachment, can be obtained in any suitable manner known per se, for example by gluing or screwing for permanent fixing, or by cooperation of complementary assembly profiles for removable and interchangeable attachment , especially when it comes to packing made of elastically deformable flexible material.
  • At least one rigid jaw of the clamp and the flexible material lining is shaped to allow a removable attachment of said liner on said jaw.
  • each opposing jaw 4 and 5 and the removable flexible material gaskets 6 are shaped to allow temporary fixing of said gaskets on said jaws, so that they are removable. and / or interchangeable.
  • the jaws 4 and / or 5 may have an approximately half-cylindrical concave shape and have a longitudinal slot 7 in their middle portion.
  • the gaskets 6 may have an approximately semi-cylindrical complementary shape and have on their bearing face 8 in the bottom of the jaws 4 or 5, a pin 9 whose attachment portion 10 to said bearing face is narrowed, so as to allow the fixing of said linings 6 by simply sliding said pin in the slot 7 of said jaws.
  • the linings 6 may comprise a longitudinal vacuum 11 for a better gripping flexibility and their gripping face may be provided with ribs 12 or asperities for a better grip of the objects C transported.
  • the jaws thus produced can be fixed removably and interchangeably, for example by screwing or otherwise at the free end of the distal portions 1B, 2B, branches 1 and 2 of the clamp.
  • the self-locking forceps is provided with means for limiting the pinch force resulting from the restoring force of the spring constituted by the proximal portions 1A, 2A, which tends to move the latter away from each other, causing the bringing the distal portions 1B, 2B, branches 1 and 2 closer together and automatically clamping the jaws 4-6 and 5-6.
  • This means can be constituted by a stop system comprising, for example, a knurled head screw 13a, screwing into the distal portion 1B or 2B of one of the branches 1 or 2 and whose end can be placed resting against the inner face of the distal portion of the other limb 2 or 1, in order to limit the movement of the approximation of said distal portions and thus the gripping force of the jaws, when releasing the pressure on the proximal portions or handles 1A, 2A of the clamp.
  • a stop system comprising, for example, a knurled head screw 13a, screwing into the distal portion 1B or 2B of one of the branches 1 or 2 and whose end can be placed resting against the inner face of the distal portion of the other limb 2 or 1, in order to limit the movement of the approximation of said distal portions and thus the gripping force of the jaws, when releasing the pressure on the proximal portions or handles 1A, 2A of the clamp.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Epidemiology (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Manipulator (AREA)
  • Surgical Instruments (AREA)

Abstract

Self-locking forceps for gripping and transporting small objects and usable in particular in dental surgery, said forceps comprising two branches (1, 2) that intersect freely and have a proximal manoeuvring part (1A, 2A) and a distal gripping part (1B, 2B), the proximal parts (1A, 2A) being joined elastically at one of their ends, while the distal parts (1B, 2B) end in jaws (4, 5), such that the closing together of the proximal parts or grips (1A, 2A) causes the distal parts (1B, 2B) to spread apart, while release of the pressure exerted on said proximal parts (1A, 2A) is translated into an automatic closing together of the distal parts (1B, 2B) and therefore of the jaws (4, 5) in a clamping position; at least one of said jaws is provided with a cushion of flexible material (6); said self-locking forceps being provided with a means (13) for limiting the clamping force generated by the return force of the spring formed by the proximal parts (1A, 2A) of the forceps.

Description

Pince pour la préhension et le transport de menus objets, utilisable, en particulier, en chirurgie dentaire. Gripper for grasping and transporting small objects, usable, in particular, in dental surgery.
La présente invention concerne une pince pour la préhension et le transport de menus objets, utilisable, en particulier, en chirurgie dentaire. Dans l'application intéressante susmentionnée, cette pince permet notamment de saisir, de transporter jusqu'au site de pose et de mettre en place, sur ce site, des pièces de prothèse dentaire de formes et dimensions variées telles que, par exemple, couronnes, bridges, implants, inlays, etc.The present invention relates to a gripper for the gripping and transport of small objects, usable, in particular, in dental surgery. In the above-mentioned advantageous application, this clamp makes it possible, in particular, to grasp, to transport to the placing site and to set up, on this site, dental prosthesis parts of various shapes and dimensions such as, for example, crowns, bridges, implants, inlays, etc.
Actuellement, sont utilisées, pour ces manipulations :Currently, are used for these manipulations:
- des pinces autobloquantes avec mors métalliques galbés ou droits ;- self-locking pliers with curved or straight metal jaws;
- des pinces autobloquantes avec mors métalliques diamantés ;- self-locking pliers with diamond-shaped metal jaws;
- des précelles autobloquantes dont les deux mors sont munis, chacun d'un tampon de substance caoutchouteuse rigide striée.- Self-locking preloads whose two jaws are provided, each with a pad of stiff rubber material grooved.
L'inconvénient majeur commun à ces dispositifs est la rigidité de leurs mors à cause de laquelle il n'y a le plus souvent que des surfaces de contact réduites ou peu de points de contact entre les mors et l'objet saisi, de sorte que la tenue de celui-ci reste peu sûre dans bien des cas, et que les objets risquent donc d'échapper inopinément aux mors de la pince et de chuter malencontreusement lors des manipulations.The major disadvantage common to these devices is the rigidity of their jaws because of which there is most often only reduced contact surfaces or few contact points between the jaws and the seized object, so that the holding of it remains unsafe in many cases, and that objects may therefore unexpectedly escape the jaws of the clamp and fall inadvertently during handling.
On connaît, par ailleurs, des pinces dont les mors sont munis de coussinets souples (DE 10 2004 017 402, US- 3 898 738, US- 5 044 954, US- 3 834 026, WO- 01/66031 , US- 2006/0127835).Grippers are also known whose jaws are provided with soft bearings (DE 10 2004 017 402, US-3 898 738, US-5,044,954, US-3,834,026, WO-01/66031, US-2006). / 0127835).
On connaît aussi des pinces dont le rapprochement des mors en position de pincement s'opère automatiquement sous l'effet d'élasticité des branches (DE- 10 2004 017 402, US- 4 035 919).Grippers are also known, the jaws of which are brought into the nip position automatically under the elasticity effect of the limbs (DE-2004 017 402, US Pat. No. 4,035,919).
Toutefois, parmi les dispositifs décrits dans les documents ci-dessus, applicables à l'art dentaire, aucun ne permet d'ajuster la force de pincement avant toute manipulation par le praticien, jusqu'à obtenir un serrage optimal et sûr de l'objet à transporter. Dans ces conditions, ces dispositifs, dans le cas d'une application à l'art dentaire et destinés à transporter des pièces de prothèse dentaire de formes et de dimensions variées, exerceraient une force aléatoire et incontrôlée (celle générée par la main du praticien) de sorte que le risque de voir l'objet glisser est grand.However, among the devices described in the above documents, applicable to dentistry, none allows to adjust the clamping force before any manipulation by the practitioner, until optimal tightening and sure of the object to be transported. Under these conditions, these devices, in the case of an application to dentistry and intended to transport dental prosthesis parts of various shapes and sizes, would exert a random and uncontrolled force (that generated by the hand of the practitioner) so that the risk of seeing the object slide is great.
L'invention vise à mettre à disposition des utilisateurs et en particulier à celle des spécialistes de la chirurgie dentaire restauratrice, une pince permettant une préhension et une manipulation très sûres de menus objets de formes variées telles que, par exemple, des pièces de prothèse dentaire.The invention aims to provide users and in particular to that of specialists in restorative dental surgery, a clamp for gripping and handling very safe small objects of various shapes such as, for example, dental prosthesis parts .
Selon l'invention, ce but est atteint grâce à une pince autobloquante comportant deux branches se croisant librement et comprenant une partie proximale de manoeuvre ou poignée et une partie distale de pincement s'étendant de part et d'autre de la zone de croisement, les parties proximales étant assemblées élastiquement à l'une de leurs extrémités et s'écartant progressivement en direction de la zone de croisement, tandis que les parties distales sont approximativement parallèles et se terminent par des mors, de sorte que le rapprochement des parties proximales ou poignées entraîne l'écartement des parties distales, alors que le relâchement de la pression exercée sur lesdites parties proximales se traduit par un rapprochement automatique des parties distales et donc des mors de celles-ci en position de serrage ; l'un au moins desdits mors est muni d'un coussinet ou garniture de matière souple apte à épouser largement la forme de l'objet ou à adhérer à l'objet pressé entre les deux mors, en fin du mouvement de rapprochement de ces derniers ; ladite pince autobloquante étant munie d'un moyen de limitation de la force de serrage générée par la force de rappel du ressort constitué par les parties proximales de la pince.According to the invention, this object is achieved by means of a self-locking forceps comprising two freely crossing arms and comprising a proximal portion for maneuvering or a handle and a distal pinching portion extending on either side of the crossing zone. the proximal portions being elastically joined at one of their ends and progressively diverging towards the crossing zone, while the distal portions are approximately parallel and terminate in jaws, so that the proximal or proximal portions are brought together; handles causes spacing of the distal portions, while releasing the pressure exerted on said proximal portions results in an automatic approximation of the distal portions and thus the jaws thereof in the clamping position; at least one of said jaws is provided with a pad or lining of flexible material able to conform largely to the shape of the object or to adhere to the object pressed between the two jaws, at the end of the movement of approaching the latter ; said self-locking pliers being provided with means for limiting the clamping force generated by the restoring force of the spring constituted by the proximal portions of the pliers.
Grâce à la pince autobloquante comportant la combinaison des trois caractéristiques ci-après :Thanks to the self-locking pliers with the combination of the following three features:
- rapprochement automatique des mors en position de pincement ;- Automatic approximation of the jaws in pinch position;
- souplesse ou adhésivité des mors ; - possibilité de réglage de la force de pincement ;- flexibility or adhesiveness of the jaws; - possibility of adjusting the clamping force;
il est possible de contrôler la force de serrage avant toute manipulation par le praticien. Ce dernier peut d'abord ajuster la force de pincement jusqu'à obtenir un pincement optimal et sûr de l'objet à transporter. Puis, sans aucune action, ni effort supplémentaire du praticien, l'autoserrage (retour automatique à la position de pincement) garantit le maintien de cette force idéale jusqu'au largage de l'objet transporté. On évite ainsi l'effet « noyau de cerise », sans aucun effort ni précaution ou attention particulière de l'utilisateur.it is possible to control the clamping force before any manipulation by the practitioner. The latter can first adjust the clamping force to obtain optimal and safe nipping of the object to be transported. Then, without any action or additional effort of the practitioner, self-tightening (automatic return to the pinch position) ensures the maintenance of this ideal force until the drop of the transported object. This avoids the effect "cherry kernel", without any effort or precaution or special attention of the user.
Les buts, caractéristiques et avantages ci-dessus, et d'autres encore, ressortiront mieux de la description qui suit et des dessins annexés dans lesquels :The above and other objects, features and advantages will become more apparent from the following description and accompanying drawings, in which:
La figure 1 est une vue en perspective d'un exemple de réalisation d'une pince autobloquante auquel est applicable l'invention, les mors antagonistes de cette pince étant représentés en position d'écartement.Figure 1 is a perspective view of an embodiment of a self-locking pliers to which the invention is applicable, the opposing jaws of this clamp being shown in spaced position.
La figure 2 est une vue en perspective analogue à la figure 1 et montrant les mors de la pince autobloquante en position de rapprochementFIG. 2 is a perspective view similar to FIG. 1 and showing the jaws of the auto-locking pliers in the approaching position.
La figure 3 est une vue partielle, en perspective et à échelle agrandie, illustrant un mode d'exécution des mors de la pince, permettant la fixation amovible d'une garniture de matière souple de type jetable.Figure 3 is a partial view, in perspective and on an enlarged scale, illustrating an embodiment of the jaws of the clamp, for the removable attachment of a flexible material packing disposable type.
La figure 4 est une vue en perspective d'un exemple d'exécution d'une garniture de matière souple de type jetable conformée pour son montage amovible sur un mors rigide illustré à la figure 3.FIG. 4 is a perspective view of an exemplary embodiment of a flexible material packing of disposable type shaped for its removable assembly on a rigid jaw illustrated in FIG.
La figure 5 est une vue partielle, en perspective et à échelle agrandie, montrant les mors de la pince munis d'une garniture de matière souple de type jetable.Figure 5 is a partial view, in perspective and on an enlarged scale, showing the jaws of the clamp provided with a flexible material packing disposable type.
La figure 6 est une vue en perspective illustrant la saisie longitudinale d'une pièce de prothèse dentaire. - A -Figure 6 is a perspective view illustrating the longitudinal gripping of a piece of dental prosthesis. - AT -
La figure 7 est une vue en perspective montrant la saisie transversale d'une pièce de prothèse dentaire.Figure 7 is a perspective view showing the transverse entry of a dental prosthesis part.
On se réfère auxdits dessins pour décrire un exemple de mise en œuvre intéressant, mais nullement limitatif, de la pince ou précelle selon l'invention.Reference is made to the drawings to describe an example of implementation interesting, but not limiting, the clamp or precelle according to the invention.
Dans l'exposé qui suit, l'expression "matière souple" signifie une matière présentant de préférence et de façon non limitative, un degré de dureté permettant sa déformation d'au moins un millimètre lorsqu'on lui applique une pression inférieure à 5N pour une surface de contact de 50 mm2.In the following description, the term "flexible material" means a material preferably and non-limitingly, a degree of hardness allowing its deformation of at least one millimeter when applied to a pressure of less than 5N for a contact area of 50 mm 2 .
Selon les figures 1 et 2, la pince illustrée est une précelle autobloquante du genre constitué de deux branches 1 et 2, se croisant librement au niveau de leur partie intermédiaire 3 et comportant une partie proximale de manœuvre ou poignée 1A, 2A et une partie distale de pincement 1 B, 2B, s'étendant de part et d'autre de leur zone de croisement 3. Les branches 1 et 2 sont essentiellement réalisées dans un métal présentant une capacité de flexibilité. Leurs parties proximales 1A, 2A sont assemblées élastiquement à l'une de leurs extrémités et s'écartent progressivement en direction de la zone de croisement 3 des branches 1 et 2. Elles constituent, de la sorte, un ressort du type ressort à lame, de façon à ce que leur rapprochement nécessite l'application d'une pression digitale convergente appliquée, par exemple, par le pouce et l'index de la main du praticien. Les parties distales 1 B, 2B sont parallèles ou approximativement parallèles, de sorte que le rapprochement des parties proximales ou poignées 1A, 2A sous la pression exercée par les doigts assure l'écartement desdites parties distales, alors que le relâchement de cette pression se traduit par un rapprochement automatique des parties distales 1 B, 2B et, par conséquent, un rapprochement des mors 4 et 5 dont sont munies, respectivement, les extrémités libres de celles-ci.According to FIGS. 1 and 2, the clip illustrated is a self-locking pre-brake of the kind consisting of two limbs 1 and 2, crossing freely at their intermediate portion 3 and having a proximal operating portion or handle 1A, 2A and a distal portion pinch 1B, 2B, extending on either side of their crossing zone 3. The branches 1 and 2 are essentially made of a metal having a capacity of flexibility. Their proximal portions 1A, 2A are elastically assembled at one of their ends and gradually move away towards the crossing zone 3 of the branches 1 and 2. They constitute, in this way, a leaf spring type spring, so that their approximation requires the application of a convergent digital pressure applied, for example, by the thumb and forefinger of the practitioner's hand. The distal portions 1 B, 2B are parallel or approximately parallel, so that the approximation of the proximal portions or handles 1A, 2A under the pressure exerted by the fingers ensures the spacing of said distal portions, while the relaxation of this pressure is translated by an automatic approximation of the distal portions 1 B, 2B and, consequently, a reconciliation of the jaws 4 and 5 which are provided, respectively, the free ends thereof.
Les portions d'extrémité des parties distales 1 B, 2B des branches 1 , 2, peuvent être incurvées ou droites (comme représenté sur les dessins).The end portions of the distal portions 1 B, 2B of the branches 1, 2 may be curved or straight (as shown in the drawings).
Au moins un des mors de pincement 4 et 5 est muni d'un coussinet ou garniture de matière souple 6 apte à épouser la forme de l'objet C pressé entre les mors 4 et 5, en fin du mouvement de rapprochement de ceux-ci. Selon le mode d'exécution préféré illustré, chacun des deux mors 4 et 5 de la pince est muni d'un coussinet ou garniture de matière souple 6.At least one of the clamping jaws 4 and 5 is provided with a pad or lining of flexible material 6 adapted to conform to the shape of the object C pressed between the jaws 4 and 5, at the end of the movement of bringing them together . According to the preferred embodiment illustrated, each of the two jaws 4 and 5 of the clamp is provided with a pad or lining of flexible material 6.
Selon un mode d'exécution, la garniture souple 6 est réalisée dans un matériau malléable, pâte à modeler collante, par exemple en silicone brute.According to one embodiment, the flexible liner 6 is made of a malleable material, sticky modeling paste, for example raw silicone.
Selon un autre mode d'exécution, la garniture souple 6 est réalisée dans un matériau déformable élastiquement ou à mémoire de forme, par exemple en caoutchouc souple, ou en mousse d'élastomère.According to another embodiment, the flexible lining 6 is made of an elastically deformable material or shape memory, for example flexible rubber, or elastomer foam.
Selon un autre mode d'exécution, l'un des mors 4 ou 5 est muni d'une garniture souple 6 exécutée dans un matériau malléable, tandis que l'autre mors 5 ou 4 est muni d'une garniture souple 6 réalisée dans un matériau déformable élastiquement.According to another embodiment, one of the jaws 4 or 5 is provided with a flexible lining 6 made of a malleable material, while the other jaw 5 or 4 is provided with a flexible lining 6 made in a elastically deformable material.
Selon un autre mode d'exécution, le ou les coussinets ou garnitures de matière souple 6 est ou sont exécuté(s) dans un matériau doté d'une capacité d'auto-adhérence, par exemple en silicone.According to another embodiment, the pad or pads of flexible material 6 is or are executed in a material having a self-adhesion capacity, for example silicone.
La garniture souple 6 peut être fixée à demeure ou de manière amovible et interchangeable sur le ou les mors 4 et/ou 5.The flexible liner 6 may be fixed permanently or removably and interchangeably on the jaw (s) 4 and / or 5.
La fixation à demeure, comme la fixation amovible et interchangeable, peuvent être obtenues de toute manière adéquate connue en soi, par exemple par collage ou vissage pour la fixation à demeure, ou par coopération de profils d'assemblage complémentaires pour la fixation amovible et interchangeable, notamment lorsqu'il s'agit de garniture exécutée en matière souple déformable élastiquement.The permanent attachment, as the removable and interchangeable attachment, can be obtained in any suitable manner known per se, for example by gluing or screwing for permanent fixing, or by cooperation of complementary assembly profiles for removable and interchangeable attachment , especially when it comes to packing made of elastically deformable flexible material.
Selon un mode d'exécution avantageux, au moins un mors rigide de la pince et la garniture de matière souple est conformé pour autoriser une fixation amovible de ladite garniture sur ledit mors.According to an advantageous embodiment, at least one rigid jaw of the clamp and the flexible material lining is shaped to allow a removable attachment of said liner on said jaw.
Selon l'exemple d'exécution illustré aux figures 3 et 5 à 7, chaque mors antagoniste 4 et 5 et les garnitures de matière souple amovibles 6 sont conformés pour autoriser une fixation provisoire desdites garnitures sur lesdits mors, de sorte que ces dernières soient amovible et/ou interchangeables. Par exemple, comme représenté sur les dessins, les mors 4 et/ou 5 peuvent présenter une forme concave approximativement demi-cylindrique et comporter une fente longitudinale 7 dans leur partie médiane. D'autre part, les garnitures 6 peuvent présenter une forme complémentaire approximativement demi-cylindrique et comporter sur leur face d'appui 8 dans le fond des mors 4 ou 5, un tenon 9 dont la portion de rattachement 10 à ladite face d'appui est rétrécie, de sorte à permettre la fixation desdites garnitures 6 par simple coulissement dudit tenon dans la fente 7 desdits mors.According to the exemplary embodiment illustrated in FIGS. 3 and 5 to 7, each opposing jaw 4 and 5 and the removable flexible material gaskets 6 are shaped to allow temporary fixing of said gaskets on said jaws, so that they are removable. and / or interchangeable. For example, as shown in the drawings, the jaws 4 and / or 5 may have an approximately half-cylindrical concave shape and have a longitudinal slot 7 in their middle portion. On the other hand, the gaskets 6 may have an approximately semi-cylindrical complementary shape and have on their bearing face 8 in the bottom of the jaws 4 or 5, a pin 9 whose attachment portion 10 to said bearing face is narrowed, so as to allow the fixing of said linings 6 by simply sliding said pin in the slot 7 of said jaws.
Les garnitures 6 peuvent comporter un vide longitudinal 11 pour une meilleure souplesse de préhension et leur face de préhension peut être munie de nervures 12 ou d'aspérités pour une meilleure prise des objets C transportés.The linings 6 may comprise a longitudinal vacuum 11 for a better gripping flexibility and their gripping face may be provided with ribs 12 or asperities for a better grip of the objects C transported.
On prévoit aussi une réalisation composite compacte des mors et des garnitures, par exemple par un procédé de moulage bi-matière connu. Dans ce cas, les mors ainsi réalisés peuvent être fixés de manière amovible et interchangeable, par exemple par vissage ou autrement à l'extrémité libre des parties distales 1 B, 2B, des branches 1 et 2 de la pince.There is also provided a compact composite embodiment of the jaws and fittings, for example by a known bi-material molding process. In this case, the jaws thus produced can be fixed removably and interchangeably, for example by screwing or otherwise at the free end of the distal portions 1B, 2B, branches 1 and 2 of the clamp.
La pince autobloquante est munie d'un moyen permettant de limiter la force de pincement découlant de la force de rappel du ressort constitué par les parties proximales 1A, 2A, laquelle tend à écarter ces dernières l'une de l'autre, en provoquant le rapprochement des parties distales 1 B, 2B, des branches 1 et 2 et le serrage automatique des mors 4-6 et 5-6.The self-locking forceps is provided with means for limiting the pinch force resulting from the restoring force of the spring constituted by the proximal portions 1A, 2A, which tends to move the latter away from each other, causing the bringing the distal portions 1B, 2B, branches 1 and 2 closer together and automatically clamping the jaws 4-6 and 5-6.
Ce moyen peut être constitué par un système de butée comprenant, par exemple, une vis 13 à tête moletée 13a, se vissant dans la partie distale 1 B ou 2B de l'une des branches 1 ou 2 et dont l'extrémité peut être placée en appui contre la face interne de la partie distale de l'autre branche 2 ou 1 , afin de limiter le mouvement du rapprochement desdites parties distales et donc la force de pincement des mors, lorsqu'on relâche la pression sur les parties proximales ou poignées 1A, 2A de la pince. This means can be constituted by a stop system comprising, for example, a knurled head screw 13a, screwing into the distal portion 1B or 2B of one of the branches 1 or 2 and whose end can be placed resting against the inner face of the distal portion of the other limb 2 or 1, in order to limit the movement of the approximation of said distal portions and thus the gripping force of the jaws, when releasing the pressure on the proximal portions or handles 1A, 2A of the clamp.

Claims

REVEND1CATIONS REVEND1CATIONS
1. Pince autobloquante pour la préhension et le transport de menus objets, utilisable en particulier, en chirurgie dentaire, cette pince comportant deux branches (1 , 2) se croisant librement et comprenant une partie proximale de manœuvre ou poignée (1A, 2A) et une partie distale de pincement (1 B, 2B) s'étendant de part et d'autre de la zone de croisement (3), les parties proximales (1A, 2A) étant assemblées élastiquement à l'une de leurs extrémités et s'écartant progressivement en direction de la zone de croisement (3), tandis que les parties distales (1 B, 2A) sont approximativement parallèles et se terminent par des mors (4, 5), de sorte que le rapprochement des parties proximales ou poignées (1A, 2A) entraîne l'écartement des parties distales (1 B, 2B), alors que le relâchement de la pression exercée sur lesdites parties proximales (1A, 1 B) se traduit par un rapprochement automatique des parties distales (1 B, 2B) et donc des mors1. Self-locking forceps for grasping and transporting small objects, usable in particular in dental surgery, this clamp comprising two branches (1, 2) freely crossing each other and comprising a proximal portion of maneuver or handle (1A, 2A) and a distal pinching portion (1 B, 2B) extending on either side of the crossing zone (3), the proximal portions (1A, 2A) being elastically joined at one of their ends and gradually diverging towards the crossing zone (3), while the distal portions (1 B, 2A) are approximately parallel and terminate in jaws (4, 5), so that the approximation of the proximal portions or handles ( 1A, 2A) causes the spacing of the distal portions (1B, 2B), while the release of the pressure exerted on said proximal portions (1A, 1B) results in an automatic approximation of the distal portions (1B, 2B) ) and therefore bit
(4, 5) de celles-ci en position de serrage ; l'un au moins desdits mors est muni d'un coussinet ou garniture de matière souple (6) apte à épouser largement la forme de l'objet (C) ou à adhérer à l'objet (C) pressé entre les deux mors, en fin du mouvement de rapprochement de ces derniers ; ladite pince autobloquante étant munie d'un moyen de limitation (13) de la force de serrage générée par la force de rappel du ressort constitué par les parties proximales (1A, 2A) de la pince.(4, 5) thereof in the clamping position; at least one of said jaws is provided with a pad or lining of flexible material (6) able to conform largely to the shape of the object (C) or to adhere to the object (C) pressed between the two jaws, at the end of the movement of approximation of the latter; said self-locking pliers being provided with a means (13) for limiting the clamping force generated by the restoring force of the spring formed by the proximal portions (1A, 2A) of the pliers.
2. Pince autobloquante selon la revendication 1 , caractérisée en ce que chacun des deux mors rigides antagonistes (4-5) est muni d'un coussinet ou garniture de matière souple (6).2. self-locking pliers according to claim 1, characterized in that each of the two rigid jaws antagonists (4-5) is provided with a pad or lining of flexible material (6).
3. Pince autobloquante suivant l'une des revendications 1 ou 2, caractérisée en ce que la garniture souple ou chaque garniture souple (6) est exécutée dans un matériau malléable, par exemple en silicone brute.3. self-locking pliers according to one of claims 1 or 2, characterized in that the flexible gasket or each flexible gasket (6) is made of a malleable material, for example raw silicone.
4. Pince autobloquante selon l'une des revendications 1 ou 2, caractérisée en ce que la garniture souple ou chaque garniture souple (6) est exécutée dans un matériau déformable élastiquement ou à mémoire de forme, par exemple en caoutchouc souple ou en mousse souple d'élastomère.Self-locking pliers according to one of claims 1 or 2, characterized in that the flexible lining or each flexible lining (6) is executed in an elastically deformable or shape-memory material, for example of flexible rubber or of flexible elastomer foam.
5. Pince autobloquante suivant l'une des revendications 1 ou 2, caractérisée en ce que l'un des mors 4 ou 5 est muni d'une garniture malléable tandis que l'autre mors (5 ou 4) est muni d'une garniture déformable élastiquement.5. Self-locking pliers according to one of claims 1 or 2, characterized in that one of the jaws 4 or 5 is provided with a malleable seal while the other jaw (5 or 4) is provided with a seal elastically deformable.
6. Pince autobloquante selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le coussinet ou garniture souple ou chaque coussinet ou garniture souple (6) est réalisé dans un matériau doté d'une capacité d'auto-adhérence.6. Self-locking pliers according to any one of claims 1 to 5, characterized in that the soft pad or pad or each pad or flexible pad (6) is made of a material with a self-adhesive capacity.
7. Pince autobloquante suivant l'une quelconque des revendications 1 à 6, caractérisée en ce que les mors antagonistes (4-6 ; 5-6) constituent l'extrémité active de préhension d'une pince du genre constitué de deux branches ou leviers reliés par l'intermédiaire de l'une de leurs extrémités avec une aptitude de flexion l'une vers l'autre, de sorte à présenter une partie proximale de manœuvre ou poignée et une partie distale de pincement.7. self-locking pliers according to any one of claims 1 to 6, characterized in that the jaws (4-6, 5-6) are the active gripping end of a clamp of the kind consisting of two branches or levers connected via one of their ends with a bending ability towards each other, so as to have a proximal operating portion or handle and a distal pinch portion.
8. Pince suivant l'une quelconque des revendications 1 à 7, caractérisée en ce que le ou les coussinet(s) ou garniture(s) souple(s) (6) est ou sont fixés de manière provisoire sur le ou les mors (4, 5) de la pince, de sorte que la ou lesdites garnitures est/sont amovible(s) et/ou interchangeable(s). 8. Clip according to any one of claims 1 to 7, characterized in that the pad or pads (s) or flexible (s) (s) (6) is or are fixed temporarily on the jaw or (s) ( 4, 5) of the clamp, so that the or said pads is / are removable (s) and / or interchangeable (s).
EP07858412A 2006-10-13 2007-10-09 Forceps for gripping and transporting small objects and usable in particular in dental surgery Ceased EP2086651A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0609008A FR2906997B1 (en) 2006-10-13 2006-10-13 CLAMP FOR PREVENTING AND TRANSPORTING OBJECT MENUS, USED IN PARTICULAR IN DENTAL SURGERY.
PCT/FR2007/001643 WO2008046981A2 (en) 2006-10-13 2007-10-09 Forceps for gripping and transporting small objects and usable in particular in dental surgery

Publications (1)

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EP2086651A2 true EP2086651A2 (en) 2009-08-12

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US (1) US20100092918A1 (en)
EP (1) EP2086651A2 (en)
FR (1) FR2906997B1 (en)
WO (1) WO2008046981A2 (en)

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Also Published As

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FR2906997A1 (en) 2008-04-18
WO2008046981A2 (en) 2008-04-24
US20100092918A1 (en) 2010-04-15
FR2906997B1 (en) 2009-04-10
WO2008046981A3 (en) 2008-06-26

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