EP1463551B1 - Veterinary syringe - Google Patents

Veterinary syringe Download PDF

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Publication number
EP1463551B1
EP1463551B1 EP03711960A EP03711960A EP1463551B1 EP 1463551 B1 EP1463551 B1 EP 1463551B1 EP 03711960 A EP03711960 A EP 03711960A EP 03711960 A EP03711960 A EP 03711960A EP 1463551 B1 EP1463551 B1 EP 1463551B1
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EP
European Patent Office
Prior art keywords
locking
operating lever
syringe
spring
guiding element
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Expired - Lifetime
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EP03711960A
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German (de)
French (fr)
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EP1463551A1 (en
Inventor
Karl Schreijäg
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Henke Sass Wolf GmbH
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Henke Sass Wolf GmbH
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Publication of EP1463551A1 publication Critical patent/EP1463551A1/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61DVETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D1/00Surgical instruments for veterinary use
    • A61D1/02Trocars or cannulas for teats; Vaccination appliances
    • A61D1/025Vaccination appliances

Definitions

  • the invention relates to a veterinary syringe comprising a base body, on the front of which a syringe barrel receiving the medicament and behind a guide body for a piston rod, which is longitudinally displaceably guided therein and with one end, to which a piston is fastened, into the syringe barrel standing, are arranged and a handle for holding the syringe, a control lever which is pivotally attached at one end to the lower part of the handle and is guided at its other end in the underside of the guide body and acts via a spring-loaded pawl on a rack which is provided on the underside of the piston rod, and a locking device for the piston rod, which engages in the rack, wherein the locking device is designed as a locking slide, which is arranged vertically displaceably in the guide body at the end thereof, having an opening through which the piston is introduced and engages from below into the rack and locks them against retraction, the locking slide can be moved by an actuator from the locked position into a release position for the rack
  • Such known veterinary syringes also called repeating syringes are, for example, from the US 3,504,673 known and used for the mass vaccination of sheep, pigs and cattle, so they must withstand high loads. It is important in such syringes to insensitive to dirt, especially as regards the provided on such a syringe operating and adjustment.
  • the locking device is also formed as a locking slide, which is arranged vertically displaceably in the guide body for the piston rod, the piston rod engages and stands out under spring load from below into the rack.
  • the gate valve can be pressed down against a spring force from above so that it releases the pawl and the piston rod can be withdrawn.
  • To keep the gate valve in the depressed form is in the known Veterinary syringe on the guide body arranged on this longitudinally displaceable annular detent, in the region of the guide body which extends between the base or handle on the one hand and the lever attached to the operating lever on the other.
  • the operating lever is in its rest position, ie in its furthest distance from the handle, the lock can be moved backwards, against the operating lever, or attached to this pawl on the guide body, wherein the lock the gate valve against the pressure of a spring pushes down, or then stops in this position. In this condition, the piston rod can be pulled backwards. If the syringe is operated again, ie the operating lever is moved forward in the direction of the handle, the operating lever or the pawl pushes the lock forward, releasing the locking slide and pushing it out of the blocking position due to the spring loading and releasing the piston rod, so that vaccinations can be carried out.
  • the formation of the lock as on the guide body longitudinally displaceable trained ring has the disadvantage that due to the constant contamination of this area in the spray insert, the lock increasingly sluggish slides on the guide body, which ultimately can lead to the syringe or in particular the lock and Thus, the locking device can not be operated or unlocked.
  • the aim of the present invention is therefore to provide a lock or a locking device in which the above-described disadvantages are avoided in the known veterinary syringes, beyond also structurally simple trained or can be produced and overall increase the robustness of the veterinary syringe.
  • This problem is solved in the veterinary syringe described above, characterized in that the locking slide is extended downwards from the guide body in the direction of the operating lever, this extension has a bore, that on the operating lever a locking pin is provided, which is aligned parallel to the piston rod, and that at standstill of the operating lever of the locking pin is in the bore, when the locking slide is pressed against the force of a spring down through the guide body through to the locking pin.
  • the locking mechanism for the locking slide for unlocking the piston rod from the region of the guide body between the operating lever on the one hand and handle or pawl on the other hand moved away in an area that is protected in the operating lever, so removed from sources of pollution.
  • the lock itself is designed according to the invention as a simple locking pin, which does not have to be adjusted or moved, as in the case of the lock According to the prior art is the case. If the gate valve is pressed down, he locks with his hole in the locking pin, and only when this locking pin is moved by operating the operating lever from its rest position to from, he releases the gate valve again, so that this is under a spring action , can move back up into the locked position.
  • the locking slide is made of a resilient material.
  • the locking pin but also be axially displaceable in the operating lever, wherein it can be pressed against the pressure of a spring in his seat.
  • the gate valve is not made of a resilient material, since it must not be able to bend in this case, or should not.
  • the gate valve is attached at its upper end to a push button which is mounted in the guide body and vertically displaceable against spring pressure.
  • a push button which is mounted in the guide body and vertically displaceable against spring pressure.
  • the veterinary syringe 1 essentially comprises a main body 2, on whose underside 3 a handle 4 is arranged, a syringe cylinder 5, which is located on the front side 6 of the main body 2 is inserted and in which a piston rod 7 with a piston 8 stands.
  • the piston rod 7 is held longitudinally displaceable in a guide body 10 arranged on the rear side 9 of the main body 2.
  • the piston rod 7 is formed on its underside as a rack 11, in which a pawl 12 can engage, which is driven by a control lever 13.
  • the operating lever 13 is pivotally attached to a first end 14 at the free end 15 of the handle 4 and guided with its second end 16 on the guide body 10 in the longitudinal direction of the veterinary syringe 1.
  • the second end 16 is formed in the region of the guide body 10 as a fork 17 which engages around the guide body 10 laterally.
  • a horizontally and transversely to the direction of movement of the piston rod 7 mounted axis 18 is provided, on which the pawl 12 is pivotally mounted, and is pressed under the action of a provided in the operating lever 13 spring 19 against the rack 11. If the operating lever 13 is moved from in the direction of the handle to a stop, the piston rod 7 is moved into the syringe barrel 5.
  • the movement path of the operating lever 13 can be adjusted via a Anschlagbegrenzungsvonichtung 20, so that the ejection amount of the drug can be dosed.
  • the stop limiting device 20 is integrated in the guide body 10 and has a between the back 9 of the body 2 on the one hand and the guide body 10 on the other hand arranged and rotatable adjustment ring 21 which can be adjusted to individual dosing.
  • These metering stages are determined by a stop cylinder 22, which protrudes below the rack 11 and the pawl 12 opposite of the guide body 10 and limits the movement path of the operating lever 13 with its dosing steps corresponding to different lengths formed end faces 23 and 24 respectively.
  • a locking device 27 is provided for locking the rack 7 against unintentional retraction of the piston rod 7.
  • a locking slide 29 is provided behind the abutment surface 26 in the guide body 10 in a vertical slot 28, which can be pressed by a push button 30 against the pressure of a spring 31 down.
  • the locking slide 29 has a recess 32 through which the piston rod 7 is passed, and moreover also an underneath arranged bore 33 which, when the push button 30 is depressed, completely protrudes from the guide body 10, so that in the operating lever thirteenth below the pawl 12 provided and aligned horizontally and parallel to the piston rod 7 locking pin 34 into the bore 33 and the locking slide 29 against the force of the spring 31 in this Can hold a position.
  • the locking pin 34 has an oblique face 35 on which the locking slide 29 with its tapered sliding surface 36 slides along until the locking pin 34 is in the bore 33 of the slightly bending in this process to the rear locking slide 29.
  • the locking pin 34 longitudinally displaceable and provide a compression spring, so that the locking pin 34 moves back when pressing the push button 30 under load of the tapered sliding surface 36 of the locking slide 29 against the pressure of a spring back to then hineinzube admire in the bore 33 ,

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Description

Die Erfindung bezieht sich auf eine veterinärmedizinische Spritze, umfassend einen Grundkörper, an dem vorne ein das Medikament aufnehmender Spritzenzylinder und hinten ein Führungskörper für eine Kolbenstange, die in diesem längsverschieblich geführt ist und mit einem Ende, an dem ein Kolben befestigt ist, in den Spritzenzylinder einsteht, angeordnet sind sowie einen Handgriff zum Halten der Spritze, einen Bedienungshebel, der mit seinem einen Ende schwenkbar an dem unteren Teil des Handgriffes befestigt und mit seinem anderen Ende in der Unterseite des Führungskörpers geführt ist und über eine federbelastete Klinke an einer Zahnstange angreift, die an der Unterseite der Kolbenstange vorgesehen ist, und eine Verriegelungsvorrichtung für die Kolbenstange, die in die Zahnstange eingreift, wobei die Verriegelungsvorrichtung als Sperrschieber ausgebildet ist, der im Führungskörper an dessen Ende vertikal verschiebbar angeordnet ist, eine Öffnung aufweist, durch die die Kolbenstange geführt ist und von unten in die Zahnstange einsteht und diese gegen ein Zurückziehen verriegelt, wobei der Sperrschieber durch eine Betätigungsvorrichtung aus der Verriegelungsstellung in eine Freigabestellung für die Zahnstange verbracht und darin gehalten werden kann.The invention relates to a veterinary syringe comprising a base body, on the front of which a syringe barrel receiving the medicament and behind a guide body for a piston rod, which is longitudinally displaceably guided therein and with one end, to which a piston is fastened, into the syringe barrel standing, are arranged and a handle for holding the syringe, a control lever which is pivotally attached at one end to the lower part of the handle and is guided at its other end in the underside of the guide body and acts via a spring-loaded pawl on a rack which is provided on the underside of the piston rod, and a locking device for the piston rod, which engages in the rack, wherein the locking device is designed as a locking slide, which is arranged vertically displaceably in the guide body at the end thereof, having an opening through which the piston is introduced and engages from below into the rack and locks them against retraction, the locking slide can be moved by an actuator from the locked position into a release position for the rack and held therein.

Solche bekannten veterinärmedizinischen Spritzen, auch Repetier-Spritzen genannt, sind z.B. aus der US 3,504,673 bekannt und werden zur Massenimpfung von Schafen, Schweinen und Rindern eingesetzt, müssen also hohen Beanspruchungen standhalten. Dabei kommt es bei solchen Spritzen vor allem auf Schmutzunempfindlichkeit an, insbesondere was die an einer solchen Spritze vorgesehenen Bedienungs- und Verstellelemente betrifft.Such known veterinary syringes, also called repeating syringes are, for example, from the US 3,504,673 known and used for the mass vaccination of sheep, pigs and cattle, so they must withstand high loads. It is important in such syringes to insensitive to dirt, especially as regards the provided on such a syringe operating and adjustment.

Bei einer solchen bekannten Spritze ist die Verriegelungsvorrichtung ebenfalls als ein Sperrschieber ausgebildet, der im Führungskörper für die Kolbenstange vertikal verschieblich angeordnet ist, die Kolbenstange umgreift und unter Federbelastung von unten in die Zahnstange einsteht. Der Sperrschieber kann von oben gegen eine Federkraft nach unten gedrückt werden, so daß er die Zahnklinke freigibt und die Kolbenstange zurückgezogen werden kann. Um den Sperrschieber in der eingedrückten Form zu halten, ist bei der bekannten Veterinär-Spritze auf dem Führungskörper ein auf diesem längs verschieblicher ringförmiger Feststeller angeordnet, und zwar in dem Bereich des Führungskörpers, der zwischen Grundkörper bzw. Handgriff einerseits und der am Bedienungshebel befestigten Klinke andererseits verläuft.In such a known syringe, the locking device is also formed as a locking slide, which is arranged vertically displaceably in the guide body for the piston rod, the piston rod engages and stands out under spring load from below into the rack. The gate valve can be pressed down against a spring force from above so that it releases the pawl and the piston rod can be withdrawn. To keep the gate valve in the depressed form is in the known Veterinary syringe on the guide body arranged on this longitudinally displaceable annular detent, in the region of the guide body which extends between the base or handle on the one hand and the lever attached to the operating lever on the other.

Befindet sich der Bedienungshebel in seiner Ruhestellung, also in seiner weitesten Entfernung von dem Handgriff, kann der Feststeller nach hinten, gegen den Bedienungshebel, bzw. die an diesem befestigte Klinke auf dem Führungskörper verschoben werden, wobei der Feststeller den Sperrschieber gegen den Druck einer Feder nach unten schiebt, bzw. dann in dieser Stellung hält. In diesem Zustand kann die Kolbenstange nach hinten gezogen werden. Wird die Spritze wieder bedient, also der Bedienungshebel nach vorne in Richtung auf den Handgriff bewegt, schiebt der Bedienungshebel bzw. die Klinke den Feststeller nach vorn, wobei er den Sperrschieber freigibt und dieser aufgrund der Federbelastung sich aus der Sperrstellung herausschiebt und die Kolbenstange freigibt, so daß Impfungen durchgeführt werden können.The operating lever is in its rest position, ie in its furthest distance from the handle, the lock can be moved backwards, against the operating lever, or attached to this pawl on the guide body, wherein the lock the gate valve against the pressure of a spring pushes down, or then stops in this position. In this condition, the piston rod can be pulled backwards. If the syringe is operated again, ie the operating lever is moved forward in the direction of the handle, the operating lever or the pawl pushes the lock forward, releasing the locking slide and pushing it out of the blocking position due to the spring loading and releasing the piston rod, so that vaccinations can be carried out.

Die Ausbildung des Feststellers als auf dem Führungskörper längs verschieblich ausgebildeter Ring weist den Nachteil auf, daß wegen der ständigen Verschmutzung dieses Bereiches im Spritzeinsatz der Feststeller zunehmend schwergängiger auf dem Führungskörper gleitet, was letztlich dazu führen kann, daß die Spritze bzw. insbesondere der Feststeller und damit die Verriegelungsvorrichtung nicht mehr betätigt bzw. entriegelt werden kann.The formation of the lock as on the guide body longitudinally displaceable trained ring has the disadvantage that due to the constant contamination of this area in the spray insert, the lock increasingly sluggish slides on the guide body, which ultimately can lead to the syringe or in particular the lock and Thus, the locking device can not be operated or unlocked.

Ziel der vorliegenden Erfindung ist es deshalb, einen Feststeller bzw. eine Verriegelungsvorrichtung zu schaffen, bei denen die vorstehend geschilderten Nachteile bei den bekannten veterinärmedizinischen Spritzen vermieden werden, darüber hinaus auch konstruktiv einfacher ausgebildet bzw. herstellbar sind und insgesamt die Robustheit der veterinärmedizinischen Spritze erhöhen.The aim of the present invention is therefore to provide a lock or a locking device in which the above-described disadvantages are avoided in the known veterinary syringes, beyond also structurally simple trained or can be produced and overall increase the robustness of the veterinary syringe.

Dieses Problem wird bei der eingangs beschriebenen veterinärmedizinischen Spritze dadurch gelöst, daß der Sperrschieber nach unten aus dem Führungskörper hinausragend in Richtung zum Bedienungshebel verlängert ist, diese Verlängerung eine Bohrung aufweist, daß am Bedienungshebel ein Sperrbolzen vorgesehen ist, der parallel zur Kolbenstange ausgerichtet ist, und daß bei Ruhestellung des Bedienungshebels der Sperrbolzen in die Bohrung einsteht, wenn der Sperrschieber gegen die Kraft einer Feder nach unten durch den Führungskörper hindurch bis zum Sperrbolzen eingedrückt ist.This problem is solved in the veterinary syringe described above, characterized in that the locking slide is extended downwards from the guide body in the direction of the operating lever, this extension has a bore, that on the operating lever a locking pin is provided, which is aligned parallel to the piston rod, and that at standstill of the operating lever of the locking pin is in the bore, when the locking slide is pressed against the force of a spring down through the guide body through to the locking pin.

Aufgrund dieser vorbeschriebenen Ausbildung ist der Feststellmechanismus für den Sperrschieber zum Entriegeln der Kolbenstange aus dem Bereich des Führungskörpers zwischen dem Bedienungshebel einerseits und Handgriff bzw. Klinke andererseits wegverlegt in einen Bereich, der geschützt im Bedienungshebel angeordnet ist, also entfernt von Verschmutzungsquellen. Der Feststeller selbst ist nach der Erfindung als einfacher Sperrbolzen ausgebildet, der nicht verstellt bzw. verschoben werden muß, so wie dies bei dem Feststeller nach dem Stand der Technik der Fall ist. Wird der Sperrschieber nach unten gedrückt, rastet er mit seiner Bohrung in den Sperrbolzen ein, und erst wenn dieser Sperrbolzen durch Betätigen des Bedienungshebels aus seiner Ruhestellung nach vom verschoben wird, gibt er den Sperrschieber wieder frei, so daß dieser, der unter einer Federeinwirkung steht, sich wieder nach oben in die Verriegelungsstellung bewegen kann.Due to this embodiment, the locking mechanism for the locking slide for unlocking the piston rod from the region of the guide body between the operating lever on the one hand and handle or pawl on the other hand moved away in an area that is protected in the operating lever, so removed from sources of pollution. The lock itself is designed according to the invention as a simple locking pin, which does not have to be adjusted or moved, as in the case of the lock According to the prior art is the case. If the gate valve is pressed down, he locks with his hole in the locking pin, and only when this locking pin is moved by operating the operating lever from its rest position to from, he releases the gate valve again, so that this is under a spring action , can move back up into the locked position.

In vorteilhafter Weiterbildung der Erfindung ist der Sperrschieber aus einem federelastischen Material hergestellt.In an advantageous embodiment of the invention, the locking slide is made of a resilient material.

Dies bedeutet, daß der Sperrbolzen im Bedienungshebel fest, also in seiner axialen Richtung unverschieblich eingebaut sein kann. Der Sperrschieber verbiegt sich dann leicht, wenn er über den Sperrbolzen gedrückt wird, bis er mit seiner Bohrung über dem Sperrbolzen einrastet. Dies stellt eine verhältnismäßig einfache konstruktive Ausbildung dar.This means that the locking pin in the operating lever fixed, so it can be immovably installed in its axial direction. The gate valve bends slightly when it is pushed over the locking pin until it engages with its bore above the locking pin. This represents a relatively simple structural design.

In einer anderen Ausbildung kann der Sperrbolzen aber auch axial verschieblich im Bedienungshebel gelagert sein, wobei er gegen den Druck einer Feder in seinen Sitz hineingedrückt werden kann. In diesem Falle ist der Sperrschieber nicht aus einem federelastischen Material hergestellt, da er sich in diesem Falle nicht verbiegen können muß, bzw. nicht soll.In another embodiment, the locking pin but also be axially displaceable in the operating lever, wherein it can be pressed against the pressure of a spring in his seat. In this case, the gate valve is not made of a resilient material, since it must not be able to bend in this case, or should not.

Der Sperrschieber ist mit seinem oberen Ende an einem Druckknopf befestigt, der im Führungskörper gelagert und gegen Federdruck vertikal verschiebbar ist. Mit diesem Druckknopf kann der Sperrschieber aus seiner Sperrstellung verbracht werden, wobei er von dem Sperrbolzen in dieser Freigabestellung gehalten wird. Durch eine in dem Druckknopf integrierte Feder bewegt sich der Sperrschieber wieder aus der Entriegelungsstellung heraus in die Verriegelungsstellung, sobald der Bedienungshebel der Spritze für den nächsten Spritzvorgang bedient wird.The gate valve is attached at its upper end to a push button which is mounted in the guide body and vertically displaceable against spring pressure. With this push button, the locking slide can be moved out of its locked position, being held by the locking pin in this release position. By a spring integrated in the push button, the locking slide moves back from the unlocked position out into the locking position as soon as the operating lever of the syringe is operated for the next injection process.

Eine die Erfindung nur beispielsweise beschreibende Ausführungsform der Veterinärspritze wird nachstehend anhand der in den Zeichnungen gezeigten Figuren beschrieben.An embodiment of the veterinary syringe for example only, for example, will now be described with reference to the figures shown in the drawings.

Es zeigen:

Fig. 1:
eine perspektivische Ansicht der Veterinärspritze,
Fig. 2:
einen vertikalen Längsschnitt durch die Veterinärspritze und
Fig. 3:
eine Vergrößerung aus Fig. 2
Show it:
Fig. 1:
a perspective view of the veterinary syringe,
Fig. 2:
a vertical longitudinal section through the veterinary syringe and
3:
an enlargement from FIG. 2

Die Veterinärspritze 1 umfaßt im wesentlichen einen Grundkörper 2, an dessen Unterseite 3 ein Handgriff 4 angeordnet ist, einen Spritzenzylinder 5, der an der Vorderseite 6 des Grundkörpers 2 eingesetzt ist und in den eine Kolbenstange 7 mit einem Kolben 8 einsteht. Die Kolbenstange 7 ist in einem an der Rückseite 9 des Grundkörpers 2 angeordneten Führungskörper 10 längs verschieblich gehalten. Die Kolbenstange 7 ist an ihrer Unterseite als Zahnstange 11 ausgebildet, in die eine Klinke 12 einrasten kann, die von einem Bedienungshebel 13 antreibbar ist. Der Bedienungshebel 13 ist mit einem ersten Ende 14 am freien Ende 15 des Handgriffs 4 schwenkbar befestigt und mit seinem zweiten Ende 16 an dem Führungskörper 10 in Längsrichtung der Veterinärspritze 1 geführt. Dabei ist das zweite Ende 16 im Bereich des Führungskörpers 10 als Gabel 17 ausgebildet, die den Führungskörper 10 seitlich umgreift. In dieser Gabel 17 ist eine horizontal und quer zur Bewegungsrichtung der Kolbenstange 7 gelagerte Achse 18 vorgesehen, auf der die Klinke 12 schwenkbar gelagert ist, und unter der Einwirkung einer in dem Bedienungshebel 13 vorgesehenen Feder 19 gegen die Zahnstange 11 gedrückt wird. Wird der Bedienungshebel 13 nach vom in Richtung auf den Handgriff bis zu einem Anschlag bewegt, wird die Kolbenstange 7 in den Spritzenzylinder 5 hineinbewegt. Der Bewegungsweg des Bedienungshebels 13 kann dabei über eine Anschlagbegrenzungsvonichtung 20 eingestellt werden, so daß die Ausspritzmenge des Medikamentes dosiert werden kann. Dazu ist die Anschlagsbegrenzungsvorrichtung 20 in den Führungskörper 10 integriert und weist einen zwischen der Rückseite 9 des Grundkörpers 2 einerseits und dem Führungskörper 10 andererseits angeordneten und verdrehbaren Einstellring 21 auf, der auf einzelne Dosierstufen eingestellt werden kann. Diese Dosierstufen werden durch einen Anschlagzylinder 22 bestimmt, der unterhalb der Zahnstange 11 und der Klinke 12 gegenüberliegend aus dem Führungskörper 10 heraussteht und mit seinem den Dosierstufen entsprechend unterschiedlich lang ausgebildeten Stirnflächen 23 bzw. 24 den Bewegungsweg des Bedienungshebels 13 begrenzt.The veterinary syringe 1 essentially comprises a main body 2, on whose underside 3 a handle 4 is arranged, a syringe cylinder 5, which is located on the front side 6 of the main body 2 is inserted and in which a piston rod 7 with a piston 8 stands. The piston rod 7 is held longitudinally displaceable in a guide body 10 arranged on the rear side 9 of the main body 2. The piston rod 7 is formed on its underside as a rack 11, in which a pawl 12 can engage, which is driven by a control lever 13. The operating lever 13 is pivotally attached to a first end 14 at the free end 15 of the handle 4 and guided with its second end 16 on the guide body 10 in the longitudinal direction of the veterinary syringe 1. In this case, the second end 16 is formed in the region of the guide body 10 as a fork 17 which engages around the guide body 10 laterally. In this fork 17 a horizontally and transversely to the direction of movement of the piston rod 7 mounted axis 18 is provided, on which the pawl 12 is pivotally mounted, and is pressed under the action of a provided in the operating lever 13 spring 19 against the rack 11. If the operating lever 13 is moved from in the direction of the handle to a stop, the piston rod 7 is moved into the syringe barrel 5. The movement path of the operating lever 13 can be adjusted via a Anschlagbegrenzungsvonichtung 20, so that the ejection amount of the drug can be dosed. For this purpose, the stop limiting device 20 is integrated in the guide body 10 and has a between the back 9 of the body 2 on the one hand and the guide body 10 on the other hand arranged and rotatable adjustment ring 21 which can be adjusted to individual dosing. These metering stages are determined by a stop cylinder 22, which protrudes below the rack 11 and the pawl 12 opposite of the guide body 10 and limits the movement path of the operating lever 13 with its dosing steps corresponding to different lengths formed end faces 23 and 24 respectively.

Befindet sich der Bedienungshebel 13 in der rückwärtigen Ruhestellung, darin gehalten durch eine an seinem ersten Ende 14 vorgesehenen und mit dem Ende 15 des Handgriffes 4 zusammenwirkenden Feder 25, liegt die Klinke 12 gegen eine im Führungskörper 10 hinter der Klinke 12 angeordneten Anschlagfläche 26 an, die die Klinke 12 gegen den Druck der Feder 19 in einer Stellung hält, bei der die Klinke 12 nicht in die Zahnstange 11 einsteht.If the operating lever 13 is in the rearward rest position, held therein by a spring 25 provided at its first end 14 and cooperating with the end 15 of the handle 4, the pawl 12 rests against a stop surface 26 arranged behind the pawl 12 in the guide body 10, which holds the pawl 12 against the pressure of the spring 19 in a position in which the pawl 12 does not stand in the rack 11.

Am hinteren Ende des Führungskörpers 10 ist eine Verriegelungsvorrichtung 27 zum Verriegeln der Zahnstange 7 gegen ein unbeabsichtigtes Zurückziehen der Kolbenstange 7 vorgesehen. Dazu ist hinter der Anschlagfläche 26 in dem Führungskörper 10 in einem vertikalen Schlitz 28 ein Sperrschieber 29 vorgesehen, der über einen Druckknopf 30 gegen den Druck einer Feder 31 nach unten gedrückt werden kann. Der Sperrschieber 29 weist eine Aussparung 32 auf, durch die die Kolbenstange 7 hindurchgeführt ist, und darüber hinaus auch noch eine darunter angeordnete Bohrung 33, die, wenn der Druckknopf 30 eingedrückt ist, vollständig aus dem Führungskörper 10 heraussteht, so daß ein im Bedienungshebel 13 unterhalb der Klinke 12 vorgesehener und horizontal und parallel zur Kolbenstange 7 ausgerichteter Sperrbolzen 34 in die Bohrung 33 einstehen und den Sperrschieber 29 gegen die Kraft der Feder 31 in dieser Stellung halten kann. Der Sperrbolzen 34 weist eine schräge Stirnfläche 35 auf, an der der Sperrschieber 29 mit seiner angeschrägten Gleitfläche 36 entlang gleitet, bis der Sperrbolzen 34 in die Bohrung 33 des sich bei diesem Vorgang leicht nach hinten verbiegenden Sperrschiebers 29 einsteht.At the rear end of the guide body 10, a locking device 27 is provided for locking the rack 7 against unintentional retraction of the piston rod 7. For this purpose, a locking slide 29 is provided behind the abutment surface 26 in the guide body 10 in a vertical slot 28, which can be pressed by a push button 30 against the pressure of a spring 31 down. The locking slide 29 has a recess 32 through which the piston rod 7 is passed, and moreover also an underneath arranged bore 33 which, when the push button 30 is depressed, completely protrudes from the guide body 10, so that in the operating lever thirteenth below the pawl 12 provided and aligned horizontally and parallel to the piston rod 7 locking pin 34 into the bore 33 and the locking slide 29 against the force of the spring 31 in this Can hold a position. The locking pin 34 has an oblique face 35 on which the locking slide 29 with its tapered sliding surface 36 slides along until the locking pin 34 is in the bore 33 of the slightly bending in this process to the rear locking slide 29.

Möglich wäre auch, den Sperrbolzen 34 längsverschieblich auszubilden und eine Druckfeder vorzusehen, so daß sich der Sperrbolzen 34 beim Eindrücken des Druckknopfes 30 unter Belastung der angeschrägten Gleitfläche 36 des Sperrschiebers 29 gegen den Druck einer Feder zurück bewegt, um sich anschließend in die Bohrung 33 hineinzubewegen.It would also be possible to form the locking pin 34 longitudinally displaceable and provide a compression spring, so that the locking pin 34 moves back when pressing the push button 30 under load of the tapered sliding surface 36 of the locking slide 29 against the pressure of a spring back to then hineinzubewegen in the bore 33 ,

In dieser Stellung des Sperrschiebers 29 kann die Kolbenstange 7 mit einem an ihrem Ende vorgesehenen Knopf 37 zurückgezogen und damit der Kolben 8 wieder in seine Ausgangsstellung bewegt und damit auch der Spritzzylinder 5 wieder mit dem Medikament gefüllt werden.In this position, the locking slide 29, the piston rod 7 is retracted with a provided at its end button 37 and thus the piston 8 is moved back to its original position and thus the injection cylinder 5 again filled with the drug.

Wird nun anschließend der Bedienungshebel 13 wieder für die nächste Injektion betätigt und nach vom gedrückt, bewegt sich der Sperrbolzen 34 aus der Bohrung 33 im Sperrschieber 29 heraus und gibt diesen frei, so daß sich dieser unter Einwirkung der Kraft der Feder 31 wieder in seine Ausgangsstellung bewegt, in der der Sperrschieber 29 mit der unteren und angeschrägten Kante 38 seiner Aussparung 32 in die Zahnstange 11 einrastet. Dadurch kann die Kolbenstange 7 dann nicht mehr zurückgezogen werden, und ein unbeabsichtigtes Zurückziehen ist nicht möglich.Now, if the operating lever 13 is then pressed again for the next injection and after pressed, the locking pin 34 moves out of the bore 33 in the locking slide 29 and releases it, so that this under the action of the spring 31 back to its starting position moves, in which the locking slide 29 engages with the lower and tapered edge 38 of its recess 32 in the rack 11. As a result, the piston rod 7 can then no longer be withdrawn, and unintentional retraction is not possible.

Claims (4)

  1. A veterinary syringe, comprising a base body (2), at the front of which a syringe barrel (5) receiving the medicament is arranged while a guiding element (10) for a plunger rod (7) that is guided therein so as to be movable in a longitudinal direction is arranged at the rear thereof, and one end of said plunger rod (7), to which a plunger (8) is attached, extends into the syringe barrel (5), said syringe further comprising a handle (4) for holding the syringe (1), an operating lever (13), one end (14) of which is pivotably attached to the lower part (15) of the handle (4) while the other end (16) thereof is guided within the bottom side (3) of the guiding element (10) and engages with a toothed rack (11) via a spring-biased catch (12), said toothed rack (11) being disposed on the bottom side of the plunger rod (7), and a locking device (27) for the plunger rod (7) which engages with the toothed rack (11) is provided as a locking slider (29) disposed inside the guiding element (10) so as to be movable in a vertical direction at the end thereof, is provided with an opening (32) through which the plunger rod (7) is guided and extends into the toothed rack (11) from below, locking said toothed rack (11) so as to prevent it from withdrawing, wherein, by means of an actuator, said locking slider (29) can be moved from the locked position into a released position for the toothed rack (11) and can be maintained in said released position, characterized by the locking slider (29) being extended so as to protrude out of the bottom of the guiding element (10) towards the operating lever (13), said extension comprising a bore (33), by a locking pin (34) being provided on the operating lever (13), which is arranged parallel to the plunger rod (7), and by the locking pin (34) extending into the bore (33), in the resting position of the operating lever (13), when the locking slider (29) is pressed down through the guiding element (10) all the way to the locking pin (34) against the force of a spring (31).
  2. Veterinary syringe according to claim 1, characterized in that the locking slider (29) is made of a resilient material.
  3. Veterinary syringe according to claim 1, characterized in that the locking pin (34) is maintained in the operating lever (13) in a lengthwise displaceable manner along its axial direction under the pressure of a spring.
  4. Veterinary syringe according to claim 1, characterized in that the locking slider (29) has its upper end attached to a push-button (30), which is supported in the guiding element (10) and vertically movable against the pressure of a spring.
EP03711960A 2002-07-10 2003-03-10 Veterinary syringe Expired - Lifetime EP1463551B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE20210683U DE20210683U1 (en) 2002-07-10 2002-07-10 Veterinary syringe
DE20210683U 2002-07-10
PCT/EP2003/002444 WO2004007004A1 (en) 2002-07-10 2003-03-10 Veterinary syringe

Publications (2)

Publication Number Publication Date
EP1463551A1 EP1463551A1 (en) 2004-10-06
EP1463551B1 true EP1463551B1 (en) 2007-11-21

Family

ID=7973049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03711960A Expired - Lifetime EP1463551B1 (en) 2002-07-10 2003-03-10 Veterinary syringe

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US (1) US7341574B2 (en)
EP (1) EP1463551B1 (en)
AU (1) AU2003218720B2 (en)
DE (2) DE20210683U1 (en)
DK (1) DK1463551T3 (en)
ES (1) ES2295565T3 (en)
NZ (1) NZ534639A (en)
PT (1) PT1463551E (en)
WO (1) WO2004007004A1 (en)

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EP3513820A1 (en) 2007-03-14 2019-07-24 The Board of Trustees of the Leland Stanford University Devices for application of reduced pressure therapy
EP2586470B1 (en) * 2008-02-14 2020-07-15 KCI Licensing, Inc. Devices for treatment of damaged tissue
DE102008049082A1 (en) * 2008-09-26 2010-04-01 Henke-Sass, Wolf Gmbh Syringe, in particular for veterinary applications
JP5680544B2 (en) * 2008-11-25 2015-03-04 スパイラキュア インコーポレイテッド Device for delivering reduced pressure to the body surface
WO2010080907A1 (en) 2009-01-07 2010-07-15 Spiracur Inc. Reduced pressure therapy of the sacral region
WO2010102146A1 (en) * 2009-03-04 2010-09-10 Spiracur Inc. Devices and methods to apply alternating level of reduced pressure to tissue
US8753322B2 (en) 2010-08-10 2014-06-17 Spiracur Inc. Controlled negative pressure apparatus and alarm mechanism
US8795246B2 (en) 2010-08-10 2014-08-05 Spiracur Inc. Alarm system
CA153896S (en) * 2013-07-17 2014-08-06 Henke Sass Wolf Gmbh Injector
WO2017139394A1 (en) * 2016-02-09 2017-08-17 Kci Licensing, Inc. A negative-pressure therapy apparatus with push-to-release actuator
CN106037988B (en) * 2016-07-05 2018-01-05 大连大学 A kind of multifunctional liquid-spraying administration combination unit local for experimental animal
EP3335755A1 (en) * 2016-12-14 2018-06-20 Allytec AB Endotracheal intubation device
US9950855B1 (en) 2017-02-20 2018-04-24 Neogen Corporation Dispenser having a sub-assembly for selectively engaging and disengaging a plunger rod
CN109363796A (en) * 2018-10-30 2019-02-22 贵州牧林农业科技发展有限公司 A kind of domestic animal continuous injector for domestic animals
CN109717983B (en) * 2019-01-23 2024-04-16 河南省农业科学院畜牧兽医研究所 Nasal drip injector assembly for animals
RU194228U1 (en) * 2019-09-20 2019-12-03 Владимир Павлович Ерохин DEVICE FOR INJECTIONS AND PUNCTIONS UNDER ultrasound CONTROL
US11957542B2 (en) 2020-04-30 2024-04-16 Automed Patent Holdco, Llc Sensing complete injection for animal injection device
DE102021134597A1 (en) 2021-12-23 2023-06-29 Henke-Sass, Wolf Gmbh Veterinary Syringe
CN115970130B (en) * 2022-10-27 2023-08-01 上海康德莱医疗器械股份有限公司 Balloon expansion pressure pump and pressure pump matching instrument

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US3517668A (en) * 1967-10-16 1970-06-30 Bio Neering Inc Multiple dosage veterinary injection gun
US3504673A (en) * 1969-03-17 1970-04-07 Squibb & Sons Inc Injector device with dosage selector
FR2480126A1 (en) 1980-04-15 1981-10-16 Morvan Michel Piston syringe for dental injections into bone tissue - has actuating lever to hammer in needle and then eject liq. anaesthetic
FR2630330A1 (en) 1988-04-22 1989-10-27 Hoepfner Jean Paul Syringe for injecting medicinal or other materials contained in a carpule
DE19732332A1 (en) 1997-07-28 1999-02-04 Armin Dr Tiefengraber Injection device for dentists

Also Published As

Publication number Publication date
ES2295565T3 (en) 2008-04-16
AU2003218720A1 (en) 2004-02-02
DE50308640D1 (en) 2008-01-03
EP1463551A1 (en) 2004-10-06
US7341574B2 (en) 2008-03-11
DK1463551T3 (en) 2008-01-02
DE20210683U1 (en) 2002-10-17
WO2004007004A1 (en) 2004-01-22
NZ534639A (en) 2005-11-25
PT1463551E (en) 2008-02-01
AU2003218720B2 (en) 2007-09-20
US20060020244A1 (en) 2006-01-26

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