DE2031841A1 - Disposable syringe - with multicompartment cylinder - for injections and blood sample collection - Google Patents
Disposable syringe - with multicompartment cylinder - for injections and blood sample collectionInfo
- Publication number
- DE2031841A1 DE2031841A1 DE19702031841 DE2031841A DE2031841A1 DE 2031841 A1 DE2031841 A1 DE 2031841A1 DE 19702031841 DE19702031841 DE 19702031841 DE 2031841 A DE2031841 A DE 2031841A DE 2031841 A1 DE2031841 A1 DE 2031841A1
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- Prior art keywords
- piston
- piston rod
- rotation
- cylinder
- syringe according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/15058—Joining techniques used for protective means
- A61B5/150587—Joining techniques used for protective means by friction fit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150236—Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150244—Rods for actuating or driving the piston, i.e. the cylindrical body that sits inside the syringe barrel, typically with an air tight seal, and slides in the barrel to create a vacuum or to expel blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150251—Collection chamber divided into at least two compartments, e.g. for division of samples
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150259—Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150267—Modular design or construction, i.e. subunits are assembled separately before being joined together or the device comprises interchangeable or detachable modules
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150305—Packages specially adapted for piercing devices or blood sampling devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150694—Procedure for removing protection means at the time of piercing
- A61B5/150717—Procedure for removing protection means at the time of piercing manually removed
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150755—Blood sample preparation for further analysis, e.g. by separating blood components or by mixing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/155—Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31596—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms comprising means for injection of two or more media, e.g. by mixing
- A61M2005/31598—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms comprising means for injection of two or more media, e.g. by mixing having multiple telescopically sliding coaxial pistons encompassing volumes for components to be mixed
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M5/31515—Connection of piston with piston rod
Abstract
Description
Injektionsspritze oder dergl. Injection syringe or the like.
Zusatz zur Patentanmeldung P 20 24 117.2 Die Erfindung betrifft eine Injektionssprize oder dergleichen mit einem in einem Zylinder in axialer Richtung beweglichen Kolben und einer mit dem Kolben verbindbaren Kolbenstange, wobei der zum Eingriff in den Kolben bestimmte Abschnitt der Kolbenstange mindestens ein in eine Verbindungs- und eine Trennstellung bringbares Verbindungselement besitzt und wobei die Kolbenstange mit einem Stellglied versehen ist, das geeignet ist, das Verbindungselement in die jeweils gewünschte seiner beiden Stellungen zu bringen, nach Patent....(Patentanmeldung P 20 24 117.2) Eine Spritze dieter Art wird der Aufgabe gerecht, einfach und billig herstellbar zu sein und die Möglichkeit zu bieten, c.ie Kolbenstange bei jeder beliebigen axialen Stellung des Kolbens innerhalb des Spritzen-Zylinders mit diesem verbinden und von diesem lösen zu können. Die Spritze kann somit nicht nur als Injektionspritze sondern beispielsweise zugleich als Transportbehälter dienen.Addition to patent application P 20 24 117.2 The invention relates to a Injection syringe or the like with one in a cylinder in the axial direction movable piston and a piston rod connectable to the piston, the section of the piston rod intended for engagement in the piston at least one in has a connection and a disconnected position bringable connecting element and wherein the piston rod is provided with an actuator which is suitable that To bring the connecting element into the respectively desired of its two positions, according to patent .... (patent application P 20 24 117.2) A syringe of the type is used To do justice to the task, to be easy and cheap to manufacture and to offer the possibility c. the piston rod on any axial position of the piston to be able to connect and detach from this within the syringe cylinder. The syringe can thus not only be used as an injection syringe but, for example, at the same time serve as a transport container.
Bei der im Hauptpatent beschriebenen Ausführungsform einer derartigen Spritze sind die Kolbenstange einerseits und das stellglied zur Überführung der VeF bindungselemente in ihre Sperr- oder Lösestellung andererseits zwei getrennte Bauelemente, die beide außerhalb des Spritzenzylinders mit Handhaben versehen sind und die aufgrund der gegenseitigen Lage dieser beiden Handhaben bereits äußerlich erkennen lassen, ob sich das Verbindungssystem zwischen Kolbenstange und Kolben in Sperr- oder in Lösestellung befindet. Die Betätigung dieses Verbindungssystems mittels der beiden Handhaben wie auch die Betätigung des Kolbens erfolgt durch axiale Bewegung der Handhaben, was einer Bedienung mit nur einer Hand entgegenkommt.In the embodiment of such a type described in the main patent The syringe are the piston rod on the one hand and the actuator for transferring the VeF connecting elements in their locking or release position on the other hand, two separate Components both of which are provided with handles outside of the syringe barrel and that due to the mutual position of these two handles already externally can be seen whether the connection system between the piston rod and piston is in the locked or released position. The operation of this connection system by means of the two handles as well as the actuation of the piston takes place axially Movement of the handle, which is convenient for operation with just one hand.
Der Erfindung liegt die Aufgabe zugrunde, eine Spritze nach dem Hauptpatent nach Baufwand und Fertigungsaufwand weiter zu vereinfachen, um ein möglichst billiges Erzeugnis zu erhalten, wobei jedoch die Bedingung weiterhin erfüllt bleiben soll, daß sich die Kolbenstange in jeder axilen Stellung des Kolbens innerhalb des Zyxlinders vom Kolben trennen oder mit diesem verbinden lassen soll.The invention is based on the object of a syringe according to the main patent to further simplify according to the cost of labor and manufacturing, to make it as cheap as possible To receive the product, but the condition should still be met, that the piston rod is in every axial position of the piston within the cylinder should be separated from the piston or connected to it.
Zur Lösung dieser Aufgabe wird vorgeschlagen, daß der Kolben und die mit einer Handhabe versehene Kolbenstange durch eine Relativdrehung zwischen beiden um die Längsachse des Zylinders miteinander in oder außer Eingriff bringbare Elemente aufwiesen und daß las Stellglied die an der Kolbenstange befindliche Handhabe dient.To solve this problem it is proposed that the piston and the piston rod provided with a handle by a relative rotation between the two in or out of engagement with one another about the longitudinal axis of the cylinder had bringable elements and that read the actuator located on the piston rod Handle serves.
Dabei besteht eine vorteilhafte Ausgestaltung darin, daß der Kolben in einer der Kolbenstange zugewandten, sich quer zur Zylinderachse erstrckenden Wand einen diametral verlaufenden Schlitz aufwelot und daß an dem dem Kolben zugewandt.en Ende der Kolbenstange ein durch deren Axialbewegung durch diesen Schlitz bewegbarer Riegel angebracht ist: Eine weitere zweckmäßige Ausgestaltung ist es, daß die beiden durch Relativdrehung zueinander in Eingriff bringbaren Elemente zugleich @ einander an dieser Relativdrehung hindernde, wehlweise in oder außer Eingriff bringbare Verriegelungselemenente aufweisen. Dabei besteht eine besonders vorteilhafte Ausführungsform darin, daß parallel zur Kolbenstangenachse sich im Kolben einerseits und am Riegel andererseits mit gleichem Zentrumsbastand eine Bohrung bzw. ein dieser Bohrung eingepaßter Zapfen befinden, wobei die gegenseitige Zuordnung von Bohrung und Zapfen so gewählt ist. daß beide bei einer Saugbewegung der Kolbenstange in Eingriff gelangen.An advantageous embodiment is that the piston in one facing the piston rod, extending transversely to the cylinder axis Wall aufwelot a diametrically extending slot and that facing the piston The end of the piston rod is movable through this slot by its axial movement Latch is attached: Another useful embodiment is that the two elements which can be brought into engagement by relative rotation to one another at the same time locking elements which prevent this relative rotation and can occasionally be brought into or out of engagement exhibit. A particularly advantageous embodiment is that parallel to the piston rod axis in the piston on the one hand and on the bolt on the other with the same center spacing a hole or a pin fitted to this hole are located, the mutual assignment of hole and pin is selected. that both come into engagement with a suction movement of the piston rod.
Eine weitere zweckmäßige Ausgestaltung besteht darin, daß der Kolbenstange mindestens ein Anschlag zugeordnet ist, der geeignet ist, die Drehung der Kolbenstange relativ zum Kolben in eine Drehsinn zu sperren, sobald sich die in oder außer Eingriff bringbaren Elemente in ihrer Lösestellung befinden.Another useful embodiment is that the piston rod at least one stop is assigned which is suitable for the rotation of the piston rod to lock relative to the piston in a direction of rotation as soon as it is in or out of engagement bringable elements are in their release position.
Noch eine andere vorteilhafte Ausführungsform besteht darin, daß in einem bestimmten Drehsinn der Kolbenstange relativ zum Kolben an der Jeweils in Drahtrichtung vorn befindlichen Kante des Schlitzes ein dem Riegel zugeordneter Anßohlag angebracht ist, der .sich in dieser Drehrichtung in Form einer schrägen Rampe allmählich ausläuft.Yet another advantageous embodiment is that in a certain direction of rotation of the piston rod relative to the piston at the respective in Wire direction at the front edge of the slot is assigned to the bolt Anßohlag is attached, the .sich in this direction of rotation in the form of an inclined Ramp gradually expires.
Schließlich besteht noch eine zweckmäßige Ausgestaltung darin, daß zu beiden Seiten des Schlitzes in jeweils gleichem Winkelabstand von diesem Je eine Bohrung in dieser Wand angebracht ist.Finally, there is also an expedient embodiment that on both sides of the slot at the same angular distance from this one Hole is made in this wall.
Besonders vorteilhaft ist es, der Kolben als Hohlkörper ausgebildet ist und der dem Kolben zugeordnete, Teil der Verbindungselemente in einer Pla't"te ausgebildet ist, die durch eine der Kolbenstange zugeordnete Öffnung in den elastischen Kolben einsetzbar ist und aus härterem Material als dieser besteht. Dabei besteht der Kolben vorzugsweise aus Silikongummi. FUr die Platte wird Polystyrol oder Polypropylen bevorzugt.It is particularly advantageous for the piston to be designed as a hollow body and the part of the connecting elements assigned to the piston in a plate is formed, which through an opening associated with the piston rod in the elastic Piston can be used and consists of a harder material than this. There is the piston is preferably made of silicone rubber. The plate is made of polystyrene or polypropylene preferred.
Die Herstellung des Kolbens aus einem hochelastischen Material, z. B. Silikongummi, brigt den weiteren Vorteil, daß keine besondere Dichtung benötigt wird und der Kolben in einer Vielfach-Form herstellbar ist.The manufacture of the piston from a highly elastic material, e.g. B. silicone rubber, brings the further advantage that no special seal is required and the piston can be manufactured in a multiple shape.
Anhand der nun folgenden Beschreibung eines in der Zeichnung dargestellten Ausführungsbeispiels der Erfindung wird diese näher erläutert.Based on the following description of one shown in the drawing Embodiment of the invention this is explained in more detail.
Es zeigt: Fig. 1 einen Axialschnitt durch eine erfindungsgemäße Spritze Zig. 2 einen Schnitt nach der Linie II-II in Rg. 1 Fig. 3 eine Draufsicht von unten auf die in den Kolben eingelegte Platte und Fig. 4 einen Schnitt durch diese Platte nach der Linie IV-IV in Fig. 3.It shows: FIG. 1 an axial section through a syringe according to the invention Zig. 2 shows a section along the line II-II in Rg. 1; FIG. 3 shows a plan view from below the plate inserted into the piston and FIG. 4 shows a section through this plate along the line IV-IV in FIG. 3.
Die Spritze setzt sich im wesentlichen aus einem Spritzenzylinder 10, einem Kolben 12 und einer mit dem Kolben nach Wunsch verbindbaren und von diesem wieder trennbaren Kolbenstange 14 zusammen. An der Spritze ist eine durch eine Kappe 16 verschließbare Tülle 18 angeformt. Zur Führung im Spritzenzylinder 10 ist die Kolbenstange mit scheibenförmigen Erweiterungen 20 versehen. am freien Ende der Kolbenstange i4 iat eine Handhabe 22 vorgesehen.The syringe consists essentially of a syringe barrel 10, a piston 12 and one connectable to and from the piston as desired again separable piston rod 14 together. On the syringe is one through a cap 16 closable spout 18 molded on. For guidance in the syringe cylinder 10 is the The piston rod is provided with disc-shaped extensions 20. at the free end of the Piston rod i4 iat a handle 22 is provided.
Der Kolben 12 ist aus einem hochlelastischen Werkstoff, vorzugsweise Silikongummi angefertigt und ist an der der Kolbenstange 14 zugewandten Seite mit einer schlitzartigen Öffnung versehen, die dem insbesondere aus Fig. 3 ersichtlichen Schlitz in einer in den Kolben durch diese Öffnung 24 einsetzbaren Platte 26 aus härterem Werkstoff, vorzugsweise Polystyrol oder Polypropylen, entspricht.The piston 12 is preferably made of a highly elastic material Made of silicone rubber and is on the side facing the piston rod 14 with provided a slot-like opening, which can be seen in particular from FIG Slot in a plate 26 which can be inserted into the piston through this opening 24 harder material, preferably polystyrene or polypropylene, corresponds.
Die Öffnung 24 wie auch der Schlitz 28 in der Platte 26 sind so bemessen, daß durch sie ein am Ende der Kolbenstange 14 angebrachter Riegel 30 in das Innere des hohlen Kolbens 12 einschibbar ist, wenn sich der Riegel 30 und diese Schlitze in Deckung befinden. An den in einer festgelegten Drehrichtung des Riegels 30, in Fig.The opening 24 as well as the slot 28 in the plate 26 are dimensioned so that that through them a bolt 30 attached to the end of the piston rod 14 into the interior of the hollow piston 12 can be inserted when the bolt 30 and these slots are under cover. At the in a fixed direction of rotation of the bolt 30, in Fig.
3 beispielsweise entgegen den Uhrzeigersinn, vorn liegenden Kanten des Schlitzes 28 in der Platte 26 sind Anschläge 32a und 32b vorgesehen, die ein Sägezahnprofil aufweisen (Fig. 4) und in dieser Drehrichtung rampenartig auslaufen.3, for example, counterclockwise, forward lying Edges of the slot 28 in the plate 26 are provided with stops 32a and 32b, which have a sawtooth profile (Fig. 4) and ramp-like in this direction of rotation leak.
Gegenüber dem Schlitz 28 um jeweils 90° versetzt sind in der Platte 26 Bohrungen angebracht, die parallel zur Zylinderachse verlaufen. Diesen Bohungen 34a und 34b ist am Riegel 30 ein Zapfen 36 zugeordnet, der etwas kürzer ist die Wandstärke der Platte 26.With respect to the slot 28 are offset by 90 ° in each case in the plate 26 bores made that run parallel to the cylinder axis. These bores 34a and 34b, a pin 36 is assigned to the bolt 30, which is slightly shorter Wall thickness of the plate 26.
Soll in der in Pilg. 1 gezeigten Lage die Kolbenstange vom Kolben getrennt werden, wird die Kolbenstange etwas in axialer Richtung in das Innere des Zylinders 10 geschoben, wodurch sich der Zapfen 36 aus der Bohrung 34a löst. Nun kann die Kolbenstange 14 um 90° gedreht werden, bis der Riegel 30 an den Anschlägen 32a bzw. 32b anliegt.Should be in the in Pilg. 1 position the piston rod from the piston are separated, the piston rod is slightly in the axial direction in the interior of the Cylinder 10 pushed, whereby the pin 36 is released from the bore 34a. so the piston rod 14 can be rotated 90 ° until the latch 30 hits the stops 32a or 32b is applied.
In dieser Lage kann nun durch eine entgegengesetzte Axialbewegung der Kolbenstange 14 diese aus dem Kolben 12 und dmnit auch aus dem Spritzenzylinder 10 entfernt werden. Das Einsetzen der Kolbenstange 14 in den Kolben 12 erfolgt in umgekehrten Reihenfolge.In this position, an opposite axial movement can now the piston rod 14 this from the piston 12 and thus also from the syringe cylinder 10 can be removed. The piston rod 14 is inserted into the piston 12 in reverse order.
Wie ersichtlich ist, wird eine Drehung zwischen Kolbenstange 14 und Kolben 12 nur in einer axialen Bewegungsrichtung der Kolbenstange sicher verhindert, nämlich in der auch zum Trennen von Kolbenstange und Kolben benutzten Bewegungsrichtung. In der entgegengesetzten axialen Richtung ist eine solche Sicherung unnötig.As can be seen, a rotation between piston rod 14 and Piston 12 is only reliably prevented in one axial direction of movement of the piston rod, namely in the direction of movement also used to separate the piston rod and piston. Such securing is unnecessary in the opposite axial direction.
Es ist noch zu erwähnen, daß im Rahmen der Erfindung mehrere Varianten möglich sind; so kann beispielsweise der Riegel mit dem Kolben verbunden sein und sich in einem Abstand von der oberen Stirnwand des Kolbens 12 befinden, während am inneren Ende der Kolbenstange von dieser gabelförmig eine geschlitzte Scheibe getragen wird, die mit dem Riegel am Kolben in Eingriff gebracht werden kann.It should also be mentioned that several variants within the scope of the invention possible are; for example, the bolt can be connected to the piston and at a distance from the upper end wall of the piston 12 are located, while at the inner end of the piston rod of this fork-shaped one slotted Disc is carried, which are brought into engagement with the latch on the piston can.
Patentansprüche:Patent claims:
Claims (8)
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702024117D DE2024117B1 (en) | 1970-05-16 | 1970-05-16 | Injection syringe |
DE19702031841 DE2031841C (en) | 1970-06-26 | Injection syringe or the like | |
DE19702040789 DE2040789A1 (en) | 1970-05-16 | 1970-08-17 | Disposable syringe - with multicompartment cylinder - for injections and blood sample collection |
CH145371A CH540698A (en) | 1970-05-16 | 1971-02-01 | Injection syringe |
NL7102018A NL7102018A (en) | 1970-05-16 | 1971-02-16 | |
DD153783A DD99308A5 (en) | 1970-05-16 | 1971-03-15 | |
ZA713008A ZA713008B (en) | 1970-05-16 | 1971-05-10 | A syringe with a piston movable in axial direction |
ES1971168953U ES168953Y (en) | 1970-05-16 | 1971-05-14 | A SYRINGE FOR INJECTIONS. |
FR7117743A FR2091684A5 (en) | 1970-05-16 | 1971-05-17 | Disposable syringe - with multicompartment cylinder - for injections and blood sample collection |
AU28910/71A AU2891071A (en) | 1970-05-16 | 1971-05-17 | Syringe |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2024117 | 1970-05-16 | ||
DE19702031841 DE2031841C (en) | 1970-06-26 | Injection syringe or the like | |
DE19702040789 DE2040789A1 (en) | 1970-05-16 | 1970-08-17 | Disposable syringe - with multicompartment cylinder - for injections and blood sample collection |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2031841A1 true DE2031841A1 (en) | 1972-06-08 |
DE2031841B2 DE2031841B2 (en) | 1973-01-04 |
DE2031841C DE2031841C (en) | 1973-07-26 |
Family
ID=
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4677980A (en) * | 1984-06-06 | 1987-07-07 | Medrad, Inc. | Angiographic injector and angiographic syringe for use therewith |
US4911695A (en) * | 1989-04-03 | 1990-03-27 | Coeur Laboratories, Inc. | Plunger for power-driven angiographic syringe, and syringe and power injector system utilizing same |
US5007904A (en) * | 1989-01-19 | 1991-04-16 | Coeur Laboratories, Inc. | Plunger for power injector angiographic syringe, and syringe comprising same |
US5094148A (en) * | 1989-05-08 | 1992-03-10 | Habley Medical Technology Corporation | Piston stem insert for a carpule based piston |
USRE35979E (en) * | 1984-06-06 | 1998-12-01 | Mtfp, Inc. | Angiographic injector and angiographic syringe for use therewith |
EP1642094A2 (en) * | 2003-07-03 | 2006-04-05 | Disetronic Licensing AG | Device for administering a liquid product |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4677980A (en) * | 1984-06-06 | 1987-07-07 | Medrad, Inc. | Angiographic injector and angiographic syringe for use therewith |
USRE35979E (en) * | 1984-06-06 | 1998-12-01 | Mtfp, Inc. | Angiographic injector and angiographic syringe for use therewith |
US5007904A (en) * | 1989-01-19 | 1991-04-16 | Coeur Laboratories, Inc. | Plunger for power injector angiographic syringe, and syringe comprising same |
US4911695A (en) * | 1989-04-03 | 1990-03-27 | Coeur Laboratories, Inc. | Plunger for power-driven angiographic syringe, and syringe and power injector system utilizing same |
US5094148A (en) * | 1989-05-08 | 1992-03-10 | Habley Medical Technology Corporation | Piston stem insert for a carpule based piston |
EP1642094A2 (en) * | 2003-07-03 | 2006-04-05 | Disetronic Licensing AG | Device for administering a liquid product |
Also Published As
Publication number | Publication date |
---|---|
DD99308A5 (en) | 1973-08-05 |
DE2031841B2 (en) | 1973-01-04 |
ES168953U (en) | 1971-11-01 |
NL7102018A (en) | 1971-11-18 |
DE2040789A1 (en) | 1972-02-24 |
CH540698A (en) | 1973-08-31 |
ES168953Y (en) | 1973-01-01 |
DE2024117B1 (en) | 1971-09-16 |
AU2891071A (en) | 1972-11-23 |
ZA713008B (en) | 1972-01-26 |
FR2091684A5 (en) | 1972-01-14 |
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Legal Events
Date | Code | Title | Description |
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C3 | Grant after two publication steps (3rd publication) |