EP2863837B1 - Device for fixing the open oral cavity of a rodent - Google Patents

Device for fixing the open oral cavity of a rodent Download PDF

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Publication number
EP2863837B1
EP2863837B1 EP13739348.4A EP13739348A EP2863837B1 EP 2863837 B1 EP2863837 B1 EP 2863837B1 EP 13739348 A EP13739348 A EP 13739348A EP 2863837 B1 EP2863837 B1 EP 2863837B1
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EP
European Patent Office
Prior art keywords
base plate
rodent
legs
retaining clip
fixing
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EP13739348.4A
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German (de)
French (fr)
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EP2863837A1 (en
Inventor
Michael Stapf
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D15/00—Mouth openers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D3/00—Appliances for supporting or fettering animals for operative purposes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D3/00—Appliances for supporting or fettering animals for operative purposes
    • A61D2003/003—Appliances for supporting or fettering animals for operative purposes with head or neck restraining means

Definitions

  • the present invention relates to a device for fixing an open oral cavity of a rodent, in particular a mouse, for example for the intratracheal, pulmonary and / or dental application of a substance, in particular a pharmaceutical active substance or a medicament, according to the preamble of claim 1.
  • the oral cavity For intratracheal, pulmonary or dental administration of substances or active substances in anesthetized rodents, such as mice, the oral cavity must be opened and kept open.
  • a manual opening or keeping open the oral cavity such as by grasping the upper and / or lower jaw of the rodent with his hands here holds a considerable injury potential for the user.
  • the device should also be through To design a simplistic and easy-to-operate structure.
  • the claimed device is designed for fixing an open oral cavity, thus for opening an oral cavity of a rodent, in particular an anesthetized rodent, in order to treat the animal intratracheally, intrapulmonary or dental.
  • the device has in this respect a base plate with a bearing surface for the rodent, which serves in particular for placing at least the head of the rodent, and a first, protruding from the base plate headband and a second, also protruding from the base plate headband.
  • the first retaining clip is intended for fixing an upper jaw of the rodent, while the second retaining clip is designed for fixing a lower jaw of the rodent.
  • the first and / or the second headband can be fixed or fixed at a variable distance from the base plate.
  • both the first and the second headband are preferably held continuously displaceable on the base plate, so that the headband depending on the size and anatomical nature of the rodent to be fixed individually to open or to hold open the corresponding oral cavity are adjustable.
  • one of the headband is preferably held continuously displaceable on the base plate and in particular the other headband is fixedly held on the base plate or rotatably movable, for example. Swiveling, is held.
  • the rodent comes to lie supine on the base plate, so that the first, provided for fixing the upper jaw headband typically has a smaller distance to the base plate than the second headband, which is provided for fixing the lower jaw of the rodent and designed accordingly is.
  • the first retaining bracket has a U-shaped contour with two protruding through the base plate through first legs.
  • the first headband is arranged by the slidably guided in the base plate first leg height adjustable on the base plate.
  • a fixation of the first retaining bracket relative to the base plate can take place according to a further embodiment by means of a clamping device with two mutually adjustable clamping jaws in different positions to the base plate and thereby largely continuously.
  • the enclosing the free ends of the first leg and against each other approximately clamped by a screw clamping jaws can exert a mechanical tension on the legs in a clamping or locking position, so that they are fixable with respect to their position on the base plate.
  • the first retaining clip may be formed as a curved metal wire, wherein, for example, the free ends of the first legs projecting from the underside of the base plate may also be manually compressed and locked in this compressed configuration by the clamping jaws.
  • the at least slightly curved locking of the first leg in particular counteracts an upward pulling out of the first retaining clip from the base plate.
  • the first retaining bracket with a U-shaped contour further preferably extends in a plane perpendicular to the plane of the base plate.
  • the second, also with respect to the base plate adjustably formed headband on an approximately M-like contour with two substantially parallel to the support surface of the base plate extending second legs.
  • the two outer second legs of the retaining clip are in this case guided displaceably in a longitudinal direction in each case on a perpendicular to the support surface on the base plate held guide member. They are also infinitely lockable on the guide member.
  • the guide member has an approximately cylindrical shape with a through hole in which the second legs of the second retaining bracket are guided in each case displaceably.
  • the resulting Displaceability of the second retaining bracket parallel to the plane of the base plate makes it possible to variably adapt the position of the second retaining bracket with respect to the first retaining bracket to the respective anatomical features of the rodent.
  • a U-shaped cap hanger is preferably arranged releasably and / or pivotally at the free end portions of the second leg.
  • the remainder of the body of the anesthetized rodent lying on the base plate can be fixed by means of the throw-over hoop.
  • the solvability or pivotability of the throw-over bow makes it possible to position the rodent approximately in a supine position between the second legs of the second holding bracket and thereafter to lock the animal between the throw-over bow and the base plate by attaching and / or pivoting the throw-over bar.
  • the throw-over bow can be arranged with the free ends of its legs on the second legs of the second retaining clip, wherein the free ends of the legs of the throw-over bow are aligned from above to the base plate facing.
  • the cap bracket extends in a plane perpendicular to the base plate or perpendicular to the support surface.
  • the second retaining clip lying between the spaced-apart lateral guide members on a U-shaped or V-like contour with an approximately perpendicular to the second legs extending central portion.
  • the somewhat flattened, approximately rectilinear middle section of the second retaining bracket comes to lie between the left and right half of the lower jaw of the rodent.
  • the contour of the second retaining clip is designed such that a middle section can come to lie sufficiently deep within the oral cavity, while the guide members holding the second retaining clip can remain outside the oral cavity of the rodent.
  • the guide members, on which the second retaining clip is displaceably guided in each case displaceably guided in a socket, wherein the corresponding socket passes through the base plate.
  • the guide members are arranged approximately parallel to the surface normal of the base plate slidably on this. The possibility of displacement of the two guide members perpendicular to the support surface of the base plate results in a corresponding vertical displacement of the second retaining bracket relative to the base plate.
  • the second headband can be both parallel to the plane of the bearing surface of the base plate as well as moved perpendicular thereto and locked accordingly.
  • the second leg facing away from the end portions of the guide members are coupled together via a carrier.
  • the carrier causes in this respect a parallel or coupled displacement of the two legs. The raising or lowering of one of the two guide members thus directly leads to a corresponding lowering or raising of the other guide member.
  • the support coupling the two guide members to each other is supported via a set screw passing through the support on an underside of the base plate facing away from the support surface.
  • the carrier may in this case have an internal thread, which is in engagement with an external thread of the adjusting screw.
  • the supporting arrangement of the adjusting screw on the underside of the base plate causes, by turning the adjusting screw, the distance between the carrier and thus the guide members fastened therewith, thus the second leg relative to the base plate, preferably can be changed continuously.
  • the carrier or the adjusting screw cooperate with a spring element, so that an adjusting movement of the carrier can take place counter to a spring tension.
  • the base plate in its support brackets facing the support surface at least one recess which serves to receive a head portion of the rodent.
  • the shape or the geometric configuration of the recess is adapted to the shape of the male head portion of the rodent.
  • the depression serves in particular to receive a nose, eyes and / or forehead of the head of the rodent.
  • the base plate is pivotally mounted via a hinge on a pedestal.
  • the base plate can be largely freely pivoted in space to facilitate the intratracheal, pulmonary or dental application of the substance.
  • a device 10 for fixing an open oral cavity of a rodent is shown in various views.
  • the device 10 has a substantially planar base plate 12, which has a in the FIG. 1 shown, in various Pivoting positions lockable joint 24 is fixed to a base 22.
  • the plate points to a in the FIG. 1 facing the viewer, the front end approximately in the middle of a depression that is to serve to receive a head portion of the rodent to be fixed on the back.
  • the base plate 12 is further connected via a screwed into the plate holder 20 with the hinge 24 and with the base 22.
  • a first U-shaped bracket 16 is arranged. This one, as in the FIG. 2 shown, two downwardly projecting legs 15, 17, by means of which the first bracket 16 passes through the base plate 12. The free ends of the legs 15, 17 can be clamped between two clamping jaws 58, 60 which are connected to one another via a clamping screw 62, as can be seen from the beginning in FIG FIG. 3 is shown.
  • the two jaws 58, 60 are in this case part of a clamping device 56, by means of which the infinitely adjustable in height first retaining bracket 16 relative to the base plate 12 is fixable.
  • the free legs 15, 17 with their projecting from the underside of the base plate 12 sections easily bent to each other and clamped in such a strained position between the jaws 58, 60.
  • the first headband 16 serves to fix an upper jaw of a rodent lying with its back on the base plate 12.
  • the second bracket 18 has an approximately M-shaped contour. However, it extends substantially parallel to the base plate 12, as for example in the FIG. 3 is shown.
  • the second bracket 18 has at its opposite end portions respectively substantially rectilinear legs 28, 30, each passing through a cylindrical guide member 42, 44 and accordingly parallel to the plane of the base plate 12 thereto are held continuously displaceable.
  • the guide members 42, 44 are in turn mounted in bushings 48, 46 which pass through the base plate 12.
  • the guide members 42, 44 project through the respective bushes 48, 46 down and project from the bottom of the base plate 12. There, the downwardly projecting ends of the guide members 42, 44 coupled to each other via an approximately parallel to the plane of the base plate 12 extending support 52 or interconnected.
  • the second bracket 18 which is similar to the first bracket 16 is formed of a metal wire, has between the guide members 42, 44 a U- or V- shaped arcuate shape, wherein a central portion 19 is aligned approximately perpendicular to the outer legs 28, 30.
  • the middle, approximately rectilinear trained headband portion 19 of the second bracket 18 is longitudinally offset from the first bracket 16, that is, the distance of the central portion 19 of the second support bracket 18 to the front edge portion of the base plate 12 is greater than the distance of the first retaining clip 16 to the front edge of the base plate 12th
  • a cap bracket 26 is also removably mounted or pivotally mounted.
  • the cap bracket 26, which extends in particular perpendicular to the plane of the base plate 12, has a recess 32 on at least one downwardly to the base plate 12 projecting legs, by means of which the cap clip 26 with the second leg 28 can be brought into engagement.
  • the throw-over bracket 26 from a for example, in the FIG. 1 shown locking position in a in the FIG. 4 shown folded up position to be transferred.
  • the anesthetized rodent can be placed in supine position on the base plate 12.
  • the hull or body of the animal can be fixed by folding down the capstan 26 on the base plate 12.
  • the cap bracket 26 can be adjustably arranged on the legs 28, 30.
  • the guide members 42, 44 on their from the top of the base plate 12 upwardly projecting end portions on an internal thread for receiving fixing screws 40. These can be screwed into corresponding upper receptacles of the guide members 42, 44 until they reach with the respective guide member 42, 44 passing through ironing portions of the second support bracket 18 in investment position.
  • fixing screws 40 thus a variable and continuous adjustment of the second retaining clip 18 can be achieved parallel to the bearing surface of the base plate 12.
  • the two guide members 42, 44 with each other coupling carrier 52 is also operatively connected to a screw 50.
  • the set screw 50 has a carrier 52 passing through thread 54, which is supported upwards to the bottom of the base plate 12 through an end stop 53 on the underside of the base plate 12. Since the screw 50 is in threaded engagement with the carrier 52 and also supported on the stop 53 on the underside of the base plate 12, by turning the screw 50, a displacement of the carrier 52 can be brought perpendicular to the plane of the base plate 12, which leads to a vertical Moving the two hereby coupled guide members 42, 44 and arranged thereon second bracket 18 leads.
  • a compression or tension spring 64 may be arranged so that an initiated via the screw 50 adjustment movement of the carrier 52 can be made against a restoring force provided by the spring 64.

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  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Animal Husbandry (AREA)
  • Catching Or Destruction (AREA)

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zur Fixierung einer geöffneten Mundhöhle eines Nagetieres, insbesondere einer Maus, etwa für die intratracheale, pulmonale und/oder dentale Applikation einer Substanz, insbesondere eines pharmazeutischen Wirkstoffs oder eines Medikaments, gemäß dem Oberbegriff des Anspruchs 1.The present invention relates to a device for fixing an open oral cavity of a rodent, in particular a mouse, for example for the intratracheal, pulmonary and / or dental application of a substance, in particular a pharmaceutical active substance or a medicament, according to the preamble of claim 1.

Für die intratracheale, pulmonale oder dentale Applikation von Substanzen oder Wirkstoffen bei narkotisierten Nagetieren, etwa von Mäusen, muss deren Mundhöhle geöffnet und offen gehalten werden. Ein manuelles Öffnen bzw. Offenhalten der Mundhöhle, etwa durch Ergreifen von Ober- und/oder Unterkiefer des Nagetiers mit den Händen birgt hierbei ein nicht unerhebliches Verletzungspotential für den Anwender.For intratracheal, pulmonary or dental administration of substances or active substances in anesthetized rodents, such as mice, the oral cavity must be opened and kept open. A manual opening or keeping open the oral cavity, such as by grasping the upper and / or lower jaw of the rodent with his hands here holds a considerable injury potential for the user.

Aus der DE 28 38 900 A , worauf die zweiteilige Form vom Anspruch 1 basiert, ist eine gattungsgemäße Vorrichtung bekannt, mittels welcher die Mundhöhle von Nagetieren geöffnet und/oder im geöffneten Zustand gehalten bzw. fixiert werden kann.From the DE 28 38 900 A on which the two-part form of claim 1 is based, a generic device is known, by means of which the oral cavity of rodents can be opened and / or held or fixed in the open state.

Es ist Aufgabe der Erfindung, eine Vorrichtung zur Fixierung einer geöffneten Mundhöhle eines Nagetiers bereitzustellen, die möglichst einfach und variabel sowie intuitiv an unterschiedlich große Nagetiere und deren Anatomie angepasst werden kann. Die Vorrichtung soll sich ferner durch einen möglichst simplen und einfach zu betätigenden Aufbau auszeichnen.It is an object of the invention to provide a device for fixing an open oral cavity of a rodent, which can be adapted to different sized rodents and their anatomy as simple and variable as possible and intuitive. The device should also be through To design a simplistic and easy-to-operate structure.

Diese Aufgabe wird mit einer Vorrichtung zur Fixierung einer geöffneten Mundhöhle eines Nagetiers mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen, der nachfolgenden Beschreibung und den Figuren.This object is achieved with a device for fixing an open oral cavity of a rodent with the features of claim 1. Advantageous embodiments of the invention will become apparent from the dependent claims, the following description and the figures.

Die anspruchsgemäße Vorrichtung ist zur Fixierung einer geöffneten Mundhöhle, mithin zum Öffnen einer Mundhöhle eines Nagetiers, insbesondere eines narkotisierten Nagetiers ausgebildet, um das Tier intratracheal, intrapulmonal oder dental behandeln zu können.The claimed device is designed for fixing an open oral cavity, thus for opening an oral cavity of a rodent, in particular an anesthetized rodent, in order to treat the animal intratracheally, intrapulmonary or dental.

Die Vorrichtung weist insoweit eine Grundplatte mit einer Auflagefläche für das Nagetier, welche insbesondere zum Auflegen zumindest des Kopfes des Nagetiers dient, sowie einen ersten, von der Grundplatte hervorstehenden Haltebügel und einen zweiten, ebenfalls von der Grundplatte hervorstehenden Haltebügel auf. Der erste Haltebügel ist zum Fixieren eines Oberkiefers des Nagetiers vorgesehen, während der zweite Haltebügel zum Fixieren eines Unterkiefers des Nagetiers ausgebildet ist. Der erste und/oder der zweite Haltebügel sind mit variablem Abstand zur Grundplatte an dieser fixierbar oder fixiert.The device has in this respect a base plate with a bearing surface for the rodent, which serves in particular for placing at least the head of the rodent, and a first, protruding from the base plate headband and a second, also protruding from the base plate headband. The first retaining clip is intended for fixing an upper jaw of the rodent, while the second retaining clip is designed for fixing a lower jaw of the rodent. The first and / or the second headband can be fixed or fixed at a variable distance from the base plate.

Es ist vorgesehen, dass sowohl der erste als auch der zweite Haltebügel vorzugsweise stufenlos an der Grundplatte verschiebbar gehalten sind, sodass die Haltebügel je nach Größe und anatomischer Beschaffenheit des zu fixierenden Nagetiers individuell zum Öffnen bzw. zum Offenhalten der entsprechenden Mundhöhle einstellbar sind. Alternativ ist es vorgesehen, dass einer der Haltebügel vorzugsweise stufenlos an der Grundplatte verschiebbar gehalten ist und insbesondere der andere Haltebügel an der Grundplatte fest gehalten ist oder drehbeweglich, bspw. verschwenkbar, gehalten ist.It is envisaged that both the first and the second headband are preferably held continuously displaceable on the base plate, so that the headband depending on the size and anatomical nature of the rodent to be fixed individually to open or to hold open the corresponding oral cavity are adjustable. Alternatively it is provided that one of the headband is preferably held continuously displaceable on the base plate and in particular the other headband is fixedly held on the base plate or rotatably movable, for example. Swiveling, is held.

Es ist insbesondere vorgesehen, dass das Nagetier in Rückenlage auf der Grundplatte zu liegen kommt, sodass der erste, zur Fixierung des Oberkiefers vorgesehene Haltebügel typischerweise einen geringeren Abstand zur Grundplatte aufweist als der zweite Haltebügel, welcher zum Fixieren des Unterkiefers des Nagetiers vorgesehen und dementsprechend ausgebildet ist.It is provided in particular that the rodent comes to lie supine on the base plate, so that the first, provided for fixing the upper jaw headband typically has a smaller distance to the base plate than the second headband, which is provided for fixing the lower jaw of the rodent and designed accordingly is.

Nach einer bevorzugten Ausgestaltung weist der erste Haltebügel eine U-förmige Kontur mit zwei durch die Grundplatte hindurch ragenden ersten Schenkeln auf. Es ist hierbei insbesondere vorgesehen, dass die beiden in einem vorgegebenen Abstand zueinander die Grundplatte durchsetzenden ersten Schenkel in etwa parallel zur Flächennormalen der Auflagefläche der Grundplatte ausgerichtet sind. Insoweit ist der erste Haltebügel durch die verschiebbar in der Grundplatte geführten ersten Schenkel höhenverstellbar an der Grundplatte angeordnet.According to a preferred embodiment, the first retaining bracket has a U-shaped contour with two protruding through the base plate through first legs. In this case, provision is made in particular for the two first legs, which are at a predetermined distance from one another to align the base plate, to be aligned approximately parallel to the surface normal of the bearing surface of the base plate. In that regard, the first headband is arranged by the slidably guided in the base plate first leg height adjustable on the base plate.

Eine Fixierung des ersten Haltebügels gegenüber der Grundplatte kann nach einer weiteren Ausgestaltung mittels einer Klemmeinrichtung mit zwei zueinander verstellbaren Klemmbacken in unterschiedlichen Positionen zur Grundplatte und dabei weitgehend stufenlos erfolgen. Die die freien Enden der ersten Schenkel einfassenden und gegeneinander etwa mittels einer Schraube verspannbaren Klemmbacken können in einer Klemm- oder Arretierstellung eine mechanische Spannung auf die Schenkel ausüben, sodass diese hinsichtlich ihrer Position an der Grundplatte fixierbar sind.A fixation of the first retaining bracket relative to the base plate can take place according to a further embodiment by means of a clamping device with two mutually adjustable clamping jaws in different positions to the base plate and thereby largely continuously. The enclosing the free ends of the first leg and against each other approximately clamped by a screw clamping jaws can exert a mechanical tension on the legs in a clamping or locking position, so that they are fixable with respect to their position on the base plate.

Der erste Haltebügel kann insbesondere als gebogener Metalldraht ausgebildet sein, wobei zum Beispiel die von der Unterseite der Grundplatte hervorstehenden freien Enden der ersten Schenkel auch manuell zusammengedrückt und in dieser zusammengedrückten Konfiguration von den Klemmbacken arretiert werden können. Die zumindest leicht gebogene Arretierung der ersten Schenkel wirkt insbesondere einem nach oben gerichteten Herausziehen des ersten Haltebügels von der Grundplatte entgegen. Der erste Haltebügel mit einer U-förmigen Kontur erstreckt sich ferner bevorzugt in einer Ebene senkrecht zur Ebene der Grundplatte.In particular, the first retaining clip may be formed as a curved metal wire, wherein, for example, the free ends of the first legs projecting from the underside of the base plate may also be manually compressed and locked in this compressed configuration by the clamping jaws. The at least slightly curved locking of the first leg in particular counteracts an upward pulling out of the first retaining clip from the base plate. The first retaining bracket with a U-shaped contour further preferably extends in a plane perpendicular to the plane of the base plate.

Nach einer weiteren Ausgestaltung weist der zweite, ebenfalls gegenüber der Grundplatte verstellbar ausgebildete Haltebügel eine in etwa M-artige Kontur mit zwei sich im Wesentlichen parallel zur Auflagefläche der Grundplatte erstreckenden zweiten Schenkeln auf. Die beiden äußeren zweiten Schenkel des Haltebügels sind hierbei nach einer Weiterbildung jeweils an einem senkrecht zur Auflagefläche an der Grundplatte gehaltenen Führungsglied in Schenkellängsrichtung verschiebbar geführt. Sie sind ferner am Führungsglied stufenlos arretierbar.According to a further embodiment, the second, also with respect to the base plate adjustably formed headband on an approximately M-like contour with two substantially parallel to the support surface of the base plate extending second legs. The two outer second legs of the retaining clip are in this case guided displaceably in a longitudinal direction in each case on a perpendicular to the support surface on the base plate held guide member. They are also infinitely lockable on the guide member.

Von Vorteil weist das Führungsglied eine in etwa zylindrische Gestalt mit einer Durchgangsbohrung auf, in welcher die zweiten Schenkel des zweiten Haltebügels jeweils verschiebbar geführt sind. Die sich hieraus ergebende Verschiebbarkeit des zweiten Haltebügels parallel zur Ebene der Grundplatte ermöglicht es, die Position des zweiten Haltebügels in Bezug auf den ersten Haltebügel an die jeweiligen anatomischen Besonderheiten des Nagetiers variabel anzupassen.Advantageously, the guide member has an approximately cylindrical shape with a through hole in which the second legs of the second retaining bracket are guided in each case displaceably. The resulting Displaceability of the second retaining bracket parallel to the plane of the base plate makes it possible to variably adapt the position of the second retaining bracket with respect to the first retaining bracket to the respective anatomical features of the rodent.

Nach einer weiteren Ausgestaltung ist an den freien Endabschnitten der zweiten Schenkel ein U-förmiger Überwurfbügel vorzugsweise lösbar und/oder schwenkbar angeordnet. Mittels des Überwurfbügels kann insbesondere der restliche Körper des auf der Grundplatte liegenden narkotisierten Nagetiers fixiert werden. Die Lösbarkeit bzw. Verschwenkbarkeit des Überwurfbügels ermöglicht es, das Nagetier etwa in Rückenlage zwischen den zweiten Schenkeln des zweiten Haltebügels zu positionieren und hiernach durch Anbringen und/oder Verschwenken des Überwurfbügels das Tier zwischen Überwurfbügel und Grundplatte zu arretieren.According to a further embodiment, a U-shaped cap hanger is preferably arranged releasably and / or pivotally at the free end portions of the second leg. In particular, the remainder of the body of the anesthetized rodent lying on the base plate can be fixed by means of the throw-over hoop. The solvability or pivotability of the throw-over bow makes it possible to position the rodent approximately in a supine position between the second legs of the second holding bracket and thereafter to lock the animal between the throw-over bow and the base plate by attaching and / or pivoting the throw-over bar.

Der Überwurfbügel ist mit den freien Enden seiner Schenkel an den zweiten Schenkeln des zweiten Haltebügels anordenbar, wobei die freien Enden der Schenkel des Überwurfbügels von oben zur Grundplatte hin weisend ausgerichtet sind. Von Vorteil erstreckt sich der Überwurfbügel in einer Ebene senkrecht zur Grundplatte bzw. senkrecht zu deren Auflagefläche.The throw-over bow can be arranged with the free ends of its legs on the second legs of the second retaining clip, wherein the free ends of the legs of the throw-over bow are aligned from above to the base plate facing. Advantageously, the cap bracket extends in a plane perpendicular to the base plate or perpendicular to the support surface.

Nach einer weiteren Ausgestaltung weist der zweite Haltebügel zwischen den voneinander beabstandeten seitlichen Führungsgliedern liegend eine U- oder V-artige Kontur mit einem sich in etwa senkrecht zu den zweiten Schenkeln erstreckenden mittleren Abschnitt auf. Jener etwas abgeflachte, in etwa geradlinige mittlere Abschnitt des zweiten Haltebügels kommt zwischen der linken und rechten Hälfte des Unterkiefers des Nagetiers zu liegen.According to a further embodiment, the second retaining clip lying between the spaced-apart lateral guide members on a U-shaped or V-like contour with an approximately perpendicular to the second legs extending central portion. The somewhat flattened, approximately rectilinear middle section of the second retaining bracket comes to lie between the left and right half of the lower jaw of the rodent.

Die Kontur des zweiten Haltebügels ist derart ausgestaltet, dass ein mittlerer Abschnitt ausreichend tief innerhalb der Mundhöhle zu liegen kommen kann, während die den zweiten Haltebügel haltenden Führungsglieder außerhalb der Mundhöhle des Nagetiers verbleiben können.The contour of the second retaining clip is designed such that a middle section can come to lie sufficiently deep within the oral cavity, while the guide members holding the second retaining clip can remain outside the oral cavity of the rodent.

Nach einer weiteren Ausgestaltung sind die Führungsglieder, an welchen der zweite Haltebügel verschiebbar geführt ist, jeweils in einer Buchse verschiebbar geführt, wobei die entsprechende Buchse die Grundplatte durchsetzt. Insoweit sind die Führungsglieder in etwa parallel zur Flächennormale der Grundplatte verschiebbar an dieser angeordnet. Durch die Verschiebemöglichkeit der beiden Führungsglieder senkrecht zur Auflagefläche der Grundplatte ergibt sich eine entsprechende vertikale Verschiebbarkeit des zweiten Haltebügels gegenüber der Grundplatte. Insoweit kann der zweite Haltebügel sowohl parallel zur Ebene der Auflagefläche der Grundplatte als auch senkrecht hierzu verschoben und dementsprechend arretiert werden.According to a further embodiment, the guide members, on which the second retaining clip is displaceably guided, in each case displaceably guided in a socket, wherein the corresponding socket passes through the base plate. In that regard, the guide members are arranged approximately parallel to the surface normal of the base plate slidably on this. The possibility of displacement of the two guide members perpendicular to the support surface of the base plate results in a corresponding vertical displacement of the second retaining bracket relative to the base plate. In that regard, the second headband can be both parallel to the plane of the bearing surface of the base plate as well as moved perpendicular thereto and locked accordingly.

Nach einer weiteren bevorzugten Ausgestaltung sind die dem zweiten Schenkel abgewandten Endabschnitte der Führungsglieder über einen Träger miteinander gekoppelt. Der Träger bewirkt insoweit eine parallele bzw. gekoppelte Verschiebung der beiden Schenkel. Das Anheben oder Absenken eines der beiden Führungsglieder führt somit unmittelbar zu einem hiermit korrespondierenden Absenken oder Anheben des anderen Führungsglieds.According to a further preferred embodiment, the second leg facing away from the end portions of the guide members are coupled together via a carrier. The carrier causes in this respect a parallel or coupled displacement of the two legs. The raising or lowering of one of the two guide members thus directly leads to a corresponding lowering or raising of the other guide member.

Nach einer Weiterbildung stützt sich der die beiden Führungsglieder miteinander koppelnde Träger über eine den Träger durchsetzende Stellschraube an einer der Auflagefläche abgewandten Unterseite der Grundplatte ab. Der Träger kann hierbei ein Innengewinde aufweisen, welches mit einem Außengewinde der Stellschraube in Eingriff steht. Die abstützende Anordnung der Stellschraube an der Unterseite der Grundplatte bewirkt, dass durch Drehen der Stellschraube der Abstand des Trägers und somit der hiermit befestigten Führungsglieder, mithin des zweiten Schenkels gegenüber der Grundplatte, bevorzugt stufenlos verändert werden kann.According to a further development, the support coupling the two guide members to each other is supported via a set screw passing through the support on an underside of the base plate facing away from the support surface. The carrier may in this case have an internal thread, which is in engagement with an external thread of the adjusting screw. The supporting arrangement of the adjusting screw on the underside of the base plate causes, by turning the adjusting screw, the distance between the carrier and thus the guide members fastened therewith, thus the second leg relative to the base plate, preferably can be changed continuously.

Gegebenenfalls kann der Träger bzw. die Stellschraube mit einem Federelement zusammenwirken, sodass eine Verstellbewegung des Trägers entgegen einer Federspannung erfolgen kann.Optionally, the carrier or the adjusting screw cooperate with a spring element, so that an adjusting movement of the carrier can take place counter to a spring tension.

Nach einer weiteren Ausgestaltung weist die Grundplatte in ihrer den Haltebügeln zugewandten Auflagefläche zumindest eine Vertiefung auf, die der Aufnahme einer Kopfpartie des Nagetiers dient. Die Form bzw. die geometrische Ausgestaltung der Vertiefung ist hierbei an die Form der aufzunehmenden Kopfpartie des Nagetiers angepasst. Die Vertiefung dient insbesondere dazu, eine Nasen-, Augen- und/oder Stirnpartie des Kopfs des Nagetiers aufzunehmen.According to a further embodiment, the base plate in its support brackets facing the support surface at least one recess which serves to receive a head portion of the rodent. The shape or the geometric configuration of the recess is adapted to the shape of the male head portion of the rodent. The depression serves in particular to receive a nose, eyes and / or forehead of the head of the rodent.

Schließlich ist nach einer weiteren Ausgestaltung vorgesehen, dass die Grundplatte über ein Gelenk an einem Standfuß schwenkbar befestigt ist. Auf diese Art und Weise kann die Grundplatte weitgehend frei im Raum verschwenkt werden, um das intratracheale, pulmonale oder dentale Applizieren der Substanz zu vereinfachen.Finally, it is provided according to a further embodiment, that the base plate is pivotally mounted via a hinge on a pedestal. In this way, the base plate can be largely freely pivoted in space to facilitate the intratracheal, pulmonary or dental application of the substance.

Weitere Ziele, Vorteile, Merkmale und Anwendungsmöglichkeiten der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels anhand der Zeichnung. Dabei bilden alle beschriebenen und/oder bildlich dargestellten Merkmale für sich oder in beliebiger sinnvoller Kombination den Gegenstand der vorliegenden Erfindung, auch unabhängig von ihrer Zusammenfassung in den Ansprüchen oder deren Rückbeziehung.Other objects, advantages, features and applications of the present invention will become apparent from the following description of an embodiment with reference to the drawings. All described and / or illustrated features alone or in any meaningful combination form the subject matter of the present invention, also independent of their summary in the claims or their dependency.

Es zeigen:

Fig. 1
eine mögliche Ausführungsform einer Vorrichtung zur Fixierung einer geöffneten Mundhöhle eines Nagetiers in perspektivischer Darstellung von schräg vorn betrachtet,
Fig. 2
die Vorrichtung gemäß der Figur 1 in einer perspektivischen Darstellung von vorn betrachtet,
Fig. 3
die Vorrichtung gemäß der Figur 1 in einer Seitenansicht und
Fig. 4
die Vorrichtung gemäß der Figur 1 in einer weiteren perspektivischen Darstellung von schräg vorn betrachtet, mit hochgeklapptem Überwurfbügel.
Show it:
Fig. 1
a possible embodiment of a device for fixing an open oral cavity of a rodent in a perspective view obliquely from the front,
Fig. 2
the device according to the FIG. 1 viewed from the front in a perspective view,
Fig. 3
the device according to the FIG. 1 in a side view and
Fig. 4
the device according to the FIG. 1 viewed in a further perspective view obliquely from the front, with folded-over thimble.

In den Darstellungen gemäß den Figuren 1 bis 3 ist eine Vorrichtung 10 zur Fixierung einer geöffneten Mundhöhle eines Nagetiers in diversen Ansichten gezeigt. Die Vorrichtung 10 weist eine im Wesentlichen eben ausgebildete Grundplatte 12 auf, die über ein in der Figur 1 gezeigtes, in diversen Schwenkstellungen arretierbares Gelenk 24 an einem Standfuß 22 befestigt ist. Die Platte weist an einem in der Figur 1 dem Betrachter zugewandten, vorderen Ende etwa mittig eine Vertiefung auf, die der Aufnahme einer Kopfpartie des auf dem Rücken zu fixierenden Nagetiers dienen soll. Die Grundplatte 12 ist ferner über eine in die Platte eingeschraubte Halterung 20 mit dem Gelenk 24 bzw. mit dem Standfuß 22 verbunden.In the representations according to the FIGS. 1 to 3 a device 10 for fixing an open oral cavity of a rodent is shown in various views. The device 10 has a substantially planar base plate 12, which has a in the FIG. 1 shown, in various Pivoting positions lockable joint 24 is fixed to a base 22. The plate points to a in the FIG. 1 facing the viewer, the front end approximately in the middle of a depression that is to serve to receive a head portion of the rodent to be fixed on the back. The base plate 12 is further connected via a screwed into the plate holder 20 with the hinge 24 and with the base 22.

Am in der Figur 1 dem Betrachter zugewandten vorderen Rand der Grundplatt 12 ist ein erster U-förmiger Haltebügel 16 angeordnet. Dieser weist, wie in der Figur 2 dargestellt, zwei nach unten ragende Schenkel 15, 17 auf, mittels welchen der erste Haltebügel 16 die Grundplatte 12 durchsetzt. Die freien Enden der Schenkel 15, 17 sind zwischen zwei über eine Spannschraube 62 miteinander verbundene Klemmbacken 58, 60 einklemmbar, wie dies ansatzweise in der Figur 3 gezeigt ist. Die beiden Klemmbacken 58, 60 sind hierbei Teil einer Klemmeinrichtung 56, mittels derer der stufenlos in der Höhe verstellbare erste Haltebügel 16 gegenüber der Grundplatte 12 fixierbar ist.Am in the FIG. 1 the observer facing the front edge of the base plate 12, a first U-shaped bracket 16 is arranged. This one, as in the FIG. 2 shown, two downwardly projecting legs 15, 17, by means of which the first bracket 16 passes through the base plate 12. The free ends of the legs 15, 17 can be clamped between two clamping jaws 58, 60 which are connected to one another via a clamping screw 62, as can be seen from the beginning in FIG FIG. 3 is shown. The two jaws 58, 60 are in this case part of a clamping device 56, by means of which the infinitely adjustable in height first retaining bracket 16 relative to the base plate 12 is fixable.

Beispielsweise können die freien Schenkel 15, 17 mit ihren von der Unterseite der Grundplatte 12 hervorstehenden Abschnitten leicht zueinander gebogen und in einer derart verspannten Position zwischen den Klemmbacken 58, 60 eingeklemmt werden. Der erste Haltebügel 16 dient hierbei der Fixierung eines Oberkiefers eines mit seinem Rücken auf der Grundplatte 12 liegenden Nagetiers.For example, the free legs 15, 17 with their projecting from the underside of the base plate 12 sections easily bent to each other and clamped in such a strained position between the jaws 58, 60. The first headband 16 serves to fix an upper jaw of a rodent lying with its back on the base plate 12.

Der zweite Haltebügel 18 weist eine in etwa M-förmige Kontur auf. Er erstreckt sich jedoch im Wesentlichen parallel zur Grundplatte 12, wie dies zum Beispiel in der Figur 3 gezeigt ist. Der zweite Haltebügel 18 weist an seinen gegenüberliegenden Endabschnitten jeweils im Wesentlichen geradlinig geformte Schenkel 28, 30 auf, die jeweils ein zylindrisches Führungsglied 42, 44 durchsetzen und dementsprechend parallel zur Ebene der Grundplatte 12 hieran stufenlos verschiebbar gehalten sind. Die Führungsglieder 42, 44 sind ihrerseits in Buchsen 48, 46 gelagert, welche die Grundplatte 12 durchsetzen.The second bracket 18 has an approximately M-shaped contour. However, it extends substantially parallel to the base plate 12, as for example in the FIG. 3 is shown. The second bracket 18 has at its opposite end portions respectively substantially rectilinear legs 28, 30, each passing through a cylindrical guide member 42, 44 and accordingly parallel to the plane of the base plate 12 thereto are held continuously displaceable. The guide members 42, 44 are in turn mounted in bushings 48, 46 which pass through the base plate 12.

Die Führungsglieder 42, 44 ragen durch die jeweiligen Buchsen 48, 46 nach unten und stehen von der Unterseite der Grundplatte 12 hervor. Dort sind die nach unten ragenden Enden der Führungsglieder 42, 44 über einen sich in etwa parallel zur Ebene der Grundplatte 12 erstreckenden Träger 52 miteinander gekoppelt bzw. miteinander verbunden.The guide members 42, 44 project through the respective bushes 48, 46 down and project from the bottom of the base plate 12. There, the downwardly projecting ends of the guide members 42, 44 coupled to each other via an approximately parallel to the plane of the base plate 12 extending support 52 or interconnected.

Mittels des Trägers 52 können die Führungsglieder 42, 44 synchron und parallel zueinander gegenüber der Grundplatte 12 verschoben werden. Hierdurch ergibt sich eine Höhenverschiebung des an in beiden Führungsgliedern 42, 44 gehaltenen zweiten Haltebügels 18. Der zweite Haltebügel 18, welcher ähnlich wie der erste Haltebügel 16 aus einem Metalldraht geformt ist, weist zwischen den Führungsgliedern 42, 44 eine U- bzw. V-förmig gebogene Gestalt auf, wobei ein mittlerer Abschnitt 19 in etwa senkrecht zu den äußeren Schenkeln 28, 30 ausgerichtet ist. Der mittlere, in etwa geradlinig ausgebildete Haltebügelabschnitt 19 des zweiten Haltebügels 18 ist in Längsrichtung versetzt zum ersten Haltebügel 16 angeordnet, das heißt, der Abstand des mittleren Abschnitts 19 des zweiten Haltebügels 18 zum vorderen Randabschnitt der Grundplatte 12 ist größer als der Abstand des ersten Haltebügels 16 zum vorderen Rand der Grundplatte 12.By means of the carrier 52, the guide members 42, 44 are moved synchronously and parallel to each other with respect to the base plate 12. This results in a height displacement of the held in two guide members 42, 44 second support bracket 18. The second bracket 18, which is similar to the first bracket 16 is formed of a metal wire, has between the guide members 42, 44 a U- or V- shaped arcuate shape, wherein a central portion 19 is aligned approximately perpendicular to the outer legs 28, 30. The middle, approximately rectilinear trained headband portion 19 of the second bracket 18 is longitudinally offset from the first bracket 16, that is, the distance of the central portion 19 of the second support bracket 18 to the front edge portion of the base plate 12 is greater than the distance of the first retaining clip 16 to the front edge of the base plate 12th

An den freien Enden der Schenkel 28, 30 des zweiten Haltebügels 18 ist ferner ein Überwurfbügel 26 abnehmbar bzw. schwenkbar gelagert. Der Überwurfbügel 26, welcher sich insbesondere senkrecht zur Ebene der Grundplatte 12 erstreckt, weist an zumindest einem nach unten zur Grundplatte 12 ragenden Schenkel eine Ausnehmung 32 auf, mittels welcher der Überwurfbügel 26 mit dem zweiten Schenkel 28 in Eingriff bringbar ist.At the free ends of the legs 28, 30 of the second retaining bracket 18, a cap bracket 26 is also removably mounted or pivotally mounted. The cap bracket 26, which extends in particular perpendicular to the plane of the base plate 12, has a recess 32 on at least one downwardly to the base plate 12 projecting legs, by means of which the cap clip 26 with the second leg 28 can be brought into engagement.

Wie in Figur 4 gezeigt, kann der Überwurfbügel 26 aus einer zum Beispiel in der Figur 1 gezeigten Arretierstellung in eine in der Figur 4 dargestellte hochgeklappte Stellung überführt werden. In dieser hochgeklappten oder verschwenkten Stellung kann zum Beispiel das narkotisierte Nagetier in Rückenlage auf die Grundplatte 12 gelegt werden. Alsdann kann der Rumpf oder Körper des Tiers durch Herunterklappen des Überwurfbügels 26 an der Grundplatte 12 fixiert werden. Der Überwurfbügel 26 kann verstellbar an den Schenkeln 28, 30 angeordnet sein. So sind beidseits des mit den Schenkeln 28, 30 in Wirkverbindung stehenden Überwurfbügels 26 einzelne Fixierglieder 34, 26 für den Überwurfbügel 26 vorgesehen, die mittels Fixierschrauben 38 stufenlos in Längsrichtung an den Schenkeln 28, 30 verstellbar angeordnet sind.As in FIG. 4 shown, the throw-over bracket 26 from a, for example, in the FIG. 1 shown locking position in a in the FIG. 4 shown folded up position to be transferred. In this folded or pivoted position, for example, the anesthetized rodent can be placed in supine position on the base plate 12. Then, the hull or body of the animal can be fixed by folding down the capstan 26 on the base plate 12. The cap bracket 26 can be adjustably arranged on the legs 28, 30. Thus, on both sides of the legs 28, 30 are operatively connected to the stirrup 26 individual fixing members 34, 26 provided for the cap bracket 26, which are arranged by means of fixing screws 38 steplessly adjustable in the longitudinal direction of the legs 28, 30.

Des Weiteren weisen die Führungsglieder 42, 44 an ihren von der Oberseite der Grundplatte 12 nach oben ragenden Endabschnitten ein Innengewinde zur Aufnahme von Fixierschrauben 40 auf. Diese können in entsprechende obere Aufnahmen der Führungsglieder 42, 44 eingeschraubt werden, bis sie mit den das jeweilige Führungsglied 42, 44 durchsetzende Bügelabschnitten des zweiten Haltebügels 18 in Anlagestellung gelangen. Mittels der Fixierschrauben 40 kann somit eine variable und stufenlose Verstellung des zweiten Haltebügels 18 parallel zur Auflagefläche der Grundplatte 12 erreicht werden.Furthermore, the guide members 42, 44 on their from the top of the base plate 12 upwardly projecting end portions on an internal thread for receiving fixing screws 40. These can be screwed into corresponding upper receptacles of the guide members 42, 44 until they reach with the respective guide member 42, 44 passing through ironing portions of the second support bracket 18 in investment position. By means of the fixing screws 40 thus a variable and continuous adjustment of the second retaining clip 18 can be achieved parallel to the bearing surface of the base plate 12.

Der die beiden Führungsglieder 42, 44 miteinander koppelnde Träger 52 steht ferner mit einer Stellschraube 50 in Wirkverbindung. Die Stellschraube 50 weist ein den Träger 52 durchsetzendes Gewinde 54 auf, welches sich nach oben zur Unterseite der Grundplatte 12 hin über einen Endanschlag 53 an der Unterseite der Grundplatte 12 abstützt. Da die Stellschraube 50 mit dem Träger 52 in Gewindeeingriff steht und sich ferner über den Anschlag 53 an der Unterseite der Grundplatte 12 abstützt, kann durch Drehen der Stellschraube 50 eine Verschiebung des Trägers 52 senkrecht zur Ebene der Grundplatte 12 herbeigeführt werden, die zu einem vertikalen Verschieben der beiden hiermit gekoppelten Führungsglieder 42, 44 und dem daran angeordneten zweiten Haltebügel 18 führt.The two guide members 42, 44 with each other coupling carrier 52 is also operatively connected to a screw 50. The set screw 50 has a carrier 52 passing through thread 54, which is supported upwards to the bottom of the base plate 12 through an end stop 53 on the underside of the base plate 12. Since the screw 50 is in threaded engagement with the carrier 52 and also supported on the stop 53 on the underside of the base plate 12, by turning the screw 50, a displacement of the carrier 52 can be brought perpendicular to the plane of the base plate 12, which leads to a vertical Moving the two hereby coupled guide members 42, 44 and arranged thereon second bracket 18 leads.

Zwischen dem Träger 52 und der Grundplatte 12 kann, wie in der Figur 4 angedeutet, ferner eine Druck- oder Zugfeder 64 angeordnet sein, so dass eine über die Stellschraube 50 initiierte Verstellbewegung des Trägers 52 entgegen einer von der Feder 64 bereitstellbaren Rückstellkraft erfolgen kann.Between the carrier 52 and the base plate 12 may, as in the FIG. 4 indicated, further, a compression or tension spring 64 may be arranged so that an initiated via the screw 50 adjustment movement of the carrier 52 can be made against a restoring force provided by the spring 64.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Vorrichtungcontraption
1212
Grundplattebaseplate
1414
Vertiefungdeepening
1515
Schenkelleg
1616
Haltebügelheadband
1717
Schenkelleg
1818
Haltebügelheadband
1919
Abschnittsection
2020
Halterungbracket
2222
Standfußstand
2424
Gelenkjoint
2626
ÜberwurfbügelUnion Ironing
2828
Schenkelleg
3030
Schenkelleg
3232
Ausnehmungrecess
3434
Fixiergliedfixation
3636
Fixiergliedfixation
3838
Fixierschraubefixing screw
4040
Fixierschraubefixing screw
4242
Führungsgliedguide member
4444
Führungsgliedguide member
4646
BuchseRifle
4848
BuchseRifle
5050
Stellschraubescrew
5252
Trägercarrier
5353
Anschlagattack
5454
Gewindethread
5656
Klemmeinrichtungclamper
5858
Klemmbackejaw
6060
Klemmbackejaw
6262
Spannschraubeclamping screw
6464
Federfeather

Claims (12)

  1. Device for fixing an open oral cavity of a rodent in position, having a base plate (12) with a supporting surface for the rodent, a first retaining clip (16), protruding from the base plate (12), for fixing an upper jaw of the rodent in position, and having a second retaining clip (18), protruding from the base plate (12), for fixing a lower jaw of the rodent in position, wherein the first and/or the second retaining clip (16, 18) are able to be fixed to the base plate (12) at a variable distance therefrom, characterized in that the first and/or the second retaining clip (16, 18) are held on the base plate (12) in a displaceable manner such that, depending on the size and the anatomy of the rodent to be fixed in position, the retaining clips are settable individually in order to open and keep open the corresponding oral cavity.
  2. Device according to Claim 1, characterized in that the first retaining clip (16) has a U-shaped contour with two first legs (15, 17) projecting through the base plate (12).
  3. Device according to Claim 2, characterized in that the first legs (15, 17) protruding from the underside of the base plate (12) are infinitely adjustable into different positions with respect to the base plate (12) by means of two clamping jaws (58, 60) of a clamping device (56) that are adjustable with respect to one another.
  4. Device according to one of the preceding claims, characterized in that the second retaining clip (18) has an M-shaped contour with two second legs (28, 30) extending substantially parallel to the supporting surface of the base plate (12).
  5. Device according to Claim 4, characterized in that the second legs (28, 30) are each guided displaceably in the longitudinal direction of the legs (28, 30) on a guide member (42, 44) held on the base plate (12) in a displaceable manner perpendicularly to the supporting surface of the base plate (12), and are infinitely lockable.
  6. Device according to Claim 4 or 5, characterized in that a U-shaped bracket (26) is arranged in a releasable and/or pivotable manner at the free end portions of the second legs (28, 30).
  7. Device according to Claim 5 or 6, characterized in that the second retaining clip (18) has, between the guide members (42, 44), a U- or V-shaped contour with a central portion (19) extending approximately perpendicularly to the second legs (28, 30).
  8. Device according to one of Claims 5 to 7, characterized in that the guide members (42, 44) are each guided in a displaceable manner in a bushing (48, 46) which passes through the base plate (12).
  9. Device according to one of Claims 5 to 8, characterized in that those end portions of the guide members (42, 44) that are remote from the second retaining clip (18) are coupled together via a carrier (52).
  10. Device according to Claim 9, characterized in that the carrier (52) is supported on an underside, remote from the supporting surface, of the base plate (12) via an adjusting screw (50) that passes through the carrier (52).
  11. Device according to one of the preceding claims, characterized in that the base plate (12) has, in its supporting surface facing the retaining clips (16, 18), at least one depression (14) for receiving a head part of the rodent.
  12. Device according to one of the preceding claims, characterized in that the base plate (12) is fastened to a pedestal (22) in a pivotable manner via a joint (24).
EP13739348.4A 2012-06-26 2013-06-25 Device for fixing the open oral cavity of a rodent Not-in-force EP2863837B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012012545.3A DE102012012545A1 (en) 2012-06-26 2012-06-26 Tracheal treatment platform for anesthetized mice
PCT/DE2013/100231 WO2014000734A1 (en) 2012-06-26 2013-06-25 Device for fixing the open oral cavity of a rodent.

Publications (2)

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EP2863837A1 EP2863837A1 (en) 2015-04-29
EP2863837B1 true EP2863837B1 (en) 2017-10-04

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WO (1) WO2014000734A1 (en)

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Publication number Priority date Publication date Assignee Title
CN104013478B (en) * 2014-06-25 2016-03-09 李晓峰 Experimental rat stationary magazine creel
BR102016011369B1 (en) * 2016-05-19 2022-09-27 Universidade Estadual De Campinas - Unicamp DEVICE FOR ANIMAL IMMOBILIZATION DURING EXPERIMENTAL PROCEDURES
CN113101004B (en) * 2021-04-22 2022-12-02 广西医科大学 Rat mouth gag
US20230062009A1 (en) * 2021-08-25 2023-03-02 PLASBIO Co.,Ltd Experimental animal restrainer applicable to various drug administration method
CN113952073B (en) * 2021-12-08 2023-08-15 华中科技大学同济医学院附属协和医院 Small animal tongue fixing mouth gag for experiments

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Publication number Priority date Publication date Assignee Title
US2827042A (en) * 1956-06-04 1958-03-18 Jr Harry H Berrier Small animal speculum
DE2131378A1 (en) * 1971-06-24 1972-12-28 Guenter Scheidt Clamping device for workpieces
SU467728A1 (en) * 1972-07-04 1975-04-25 Лаборатория Зрительной Рецепции Ан Армянской Сср Device for fixing nether birds
JPS5440181A (en) * 1977-09-06 1979-03-28 Fumie Kanetake Fixing instrument for small animal
US5184604A (en) * 1991-10-29 1993-02-09 Brillante Jose C Animal mouth retractor

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Title
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WO2014000734A1 (en) 2014-01-03
DE102012012545A1 (en) 2014-01-02
DE112013003226A5 (en) 2015-03-26

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