DE3640010C1 - Device for emptying a disposable syringe against high pressure - Google Patents
Device for emptying a disposable syringe against high pressureInfo
- Publication number
- DE3640010C1 DE3640010C1 DE19863640010 DE3640010A DE3640010C1 DE 3640010 C1 DE3640010 C1 DE 3640010C1 DE 19863640010 DE19863640010 DE 19863640010 DE 3640010 A DE3640010 A DE 3640010A DE 3640010 C1 DE3640010 C1 DE 3640010C1
- Authority
- DE
- Germany
- Prior art keywords
- push rod
- handle
- spring
- toothing
- movable
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
- B05C17/0116—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like characterised by the piston driving means
- B05C17/012—Stepwise advancing mechanism, e.g. pawl and ratchets
- B05C17/0123—Lever actuated
-
- 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
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
- A61M5/31578—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod
- A61M5/31581—Constructional features or modes of drive mechanisms for piston rods based on axial translation, i.e. components directly operatively associated and axially moved with plunger rod performed by rotationally moving or pivoting actuator operated by user, e.g. an injection lever or handle
-
- 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
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/3159—Dose expelling manners
- A61M5/31593—Multi-dose, i.e. individually set dose repeatedly administered from the same medicament reservoir
- A61M5/31595—Pre-defined multi-dose administration by repeated overcoming of means blocking the free advancing movement of piston rod, e.g. by tearing or de-blocking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
- B05C17/014—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like comprising means for preventing oozing
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Entleeren einer Einmal-Spritze gegen hohen Druck nach dem Oberbe griff des Anspruchs 1.The invention relates to a device for emptying a single-use syringe against high pressure after the Oberbe handle of claim 1.
Aus der US 35 17 68 ist eine Vorrichtung zum Ent leeren einer Einmal-Spritze bekannt, bei der ein durch Federdruck auf die Zahnung der Schubstange wirkendes Sperrmittel vorgesehen ist, das eine Rückbewegung der Schubstange bei Lösen des beweglichen Griffstücks ver hindert. From US 35 17 68 is a device for Ent Empty a disposable syringe known to have a through Spring pressure acting on the toothing of the push rod Locking means is provided that a return movement of the Push rod when loosening the movable handle prevents.
Bei der vorbekannten Ausbildung ist es nachteilig, daß ein in der zu entleerenden Einmal-Spritze verbleibender Restdruck sich nicht abbauen kann, was eine exakte Dosierung bei nachfolgendem Betätigen des beweglichen Griffstücks erschwert.In the known training, it is disadvantageous that one remaining in the disposable syringe to be emptied Residual pressure cannot decrease, which is an exact Dosing with subsequent actuation of the mobile Handle difficult.
Der Erfindung liegt die Aufgabe zugrunde, das Sperrmit tel derart auszubilden, daß sich der Druck in der Einmal-Spritze nach Freigabe des beweglichen Griff stücks sofort abbaut.The invention has for its object the Sperrmit tel in such a way that the pressure in the Disposable syringe after release of the movable handle dismantles immediately.
Erfindungsgemäß wird diese Aufgabe durch die im kenn zeichnenden Teil des Hauptanspruchs angegebenen Merk male gelöst. Gegenstand des Unteranspruchs ist eine bevorzugte Ausgestaltung.According to the invention, this object is achieved by the drawing part of the main claim specified Merk times solved. The subject of the subclaim is a preferred embodiment.
Der Erfindung liegt die Erkenntnis zugrunde, daß bei der vorbekannten Ausbildung auch nach Freigabe des beweglichen Griffstücks aufgrund des sich in der zu entleerenden Einmal-Spritze aufbauenden Innendrucks ein weiters Ausfließen des Mediums aus der Einmal-Spritze zu beobachten ist. Die vorbekannte Spritze ist daher nur zum Entleeren einer Spritze mit einer starren Wan dung, insbesondere einem Glaszylinder, verwendbar. Bei Verwendung einer Einmal-Spritze mit einer elastischen Kunststoffwandung dagegen ist die vorbekannte Vorrich tung nicht geeignet. Ein plötzliches Beenden des Ent leervorgangs durch Freigabe des beweglichen Griffstücks ist bei der vorbekannten Vorrichtung nicht erzielbar.The invention is based on the finding that the known training even after approval of movable handle due to the in the to emptying disposable syringe with internal pressure further outflow of the medium from the disposable syringe can be observed. The previously known syringe is therefore only for emptying a syringe with a rigid tub tion, especially a glass cylinder, can be used. At Use a single-use syringe with an elastic one Plastic wall, on the other hand, is the known device not suitable. A sudden termination of the Ent empty process by releasing the movable handle cannot be achieved with the previously known device.
Die Erfindung wird im folgenden anhand einer Zeichnung erläutert. Dabei zeigt The invention is described below with reference to a drawing explained. It shows
Fig. 1 eine Seitenansicht einer solchen Vor richtung, und Fig. 1 is a side view of such a device before, and
Fig. 2 eine Einzelheit dieser Vorrichtung in größerer Darstellung im Schnitt. Fig. 2 shows a detail of this device in a larger representation in section.
Die Vorrichtung besteht aus einer ersten Halbschale 30 und einer die zu entleerende Einmal-Spritze aufnehmenden zweiten Halbschale 28, einer auf den Kol ben der zu entleerenden Einmal-Spritze wirkenden, in Richtung der Aufnahme beweglichen, mit einer nach hin ten weisenden Zahnung 12 versehenen Schubstange 14 und einem Griff. Dieser Griff besteht aus einem die Schub stange 14 führenden festen Griffstück 16 und einem relativ zu diesem beweglichen Griffstück 15. Das beweg liche Griffstück 15 trägt einen auf die Zahnung 12 der Schubstange 14 wirkenden Kipphebel 20, wobei der vor dere, in die Zahnung 12 eingreifende Abschnitt des Kipphebels 20 so lang ausgebildet ist, daß die von diesem eingeleitete Kraft im wesentlichen parallel zur Achse der Schubstange 14 verläuft.The device consists of a first half-shell 30 and a second half-shell 28 to be emptied to be emptied, a second half-shell acting on the piston ben of the single-use syringe to be emptied, movable in the direction of the receptacle, provided with a tooth 12 pointing towards the rear 14 and a handle. This handle consists of a push rod 14 leading fixed handle 16 and a relative to this movable handle 15th The movable union handle 15 carries a on the toothing 12 of the push rod 14 acting rocker arm 20 , the front engaging in the toothing 12 portion of the rocker arm 20 is so long that the force introduced by this substantially parallel to the axis of the push rod 14 runs.
Bei Betätigung des beweglichen Griffstücks 15 greift der durch eine Klemmhebel-Feder 21 in die Zahnung 12 der Schubstange 14 gedrückte vordere Abschnitt des Klemmhebels 20 in die Zahnung 12 ein und schiebt die Schubstange 14 so nach vorne. Nach Freigabe des beweg lichen Griffstücks 15 läuft der hintere Abschnitt des Kipphebels 20 in eine in dem festen Griffstück 16 ausgebildete Kulisse 26 und wird dabei nach oben ge drückt, so daß der vordere Abschnitt des Kipphebels 20 sich aus der Zahnung 12 der Schubstange 14 löst und ein Rückgleiten der Schubstange 14 ermöglicht. When the movable handle 15 is actuated, the front section of the clamping lever 20 , which is pressed into the toothing 12 of the push rod 14 by a clamping lever spring 21 , engages in the toothing 12 and thus pushes the push rod 14 forward. After release of the movable union handle 15 , the rear section of the rocker arm 20 runs into a slot 26 formed in the fixed handle 16 and is pressed upwards, so that the front section of the rocker arm 20 is released from the teeth 12 of the push rod 14 and a sliding back of the push rod 14 allows.
Dieses Rückgleiten der Schubstange 14 wird durch das erfindungsgemäß vorgesehene, durch eine in eine im we sentlichen rechtwinklig zu der Schubstange 14 verlau fende Bohrung 17 in dem festen Griffstück 16 eingesetz te Sperrfeder 22 und einen auf dieser aufsitzenden, sich nach oben verjüngend geformten Sperrkörper 24 gebildeten Sperrmittel gesteuert. Bei Übersteigen eines durch die Federkonstante der Sperrfeder 22 und die Form des Sperrkörpers 24 definierten Wertes wird der Sperr körper gegen die Kraft der Sperrfeder 22 unter Freigabe einer Bewegung der Schubstange 14 nach unten gedrückt.This sliding back of the push rod 14 is formed by the inventively provided by a in a substantially rectangular to the push rod 14 duri fende bore 17 in the fixed handle 16 inserted te locking spring 22 and a seated on this, upwardly tapered locking body 24 formed Locking agent controlled. When a value defined by the spring constant of the locking spring 22 and the shape of the locking body 24 is exceeded, the locking body is pressed downward against the force of the locking spring 22 , releasing a movement of the push rod 14 .
Das vorgeschlagene Sperrmittel stellt auf diese Weise sicher, daß der sich in der Einmal-Spritze und in der Kanüle aufbauende Druck nach hinten, also in Richtung auf die Schubstange 14, abbauen kann, wobei jedoch gewährleistet ist, daß die Schubstange 14 immer unmit telbar an dem Kolben der Einmal-Spritze anliegt und ein definierter Rest-Gegendruck in der Einmal-Spritze ge währleistet ist. Nach erneuter Betätigung des bewegli chen Griffstücks 15 greift der Kipphebel 20 wiederum in die Zahnung 12 der Schubstange 14 ein und baut erneut einen Druck zur Überwindung des Gegendrucks und dadurch zum Einspritzen des Mediums in der Spritze auf. Die vorgeschlagene Ausbildung der vorbekannten Vorrichtung ermöglicht so ein exaktes Steuern der Menge des einzu spritzenden Mediums.The proposed locking means ensures in this way that the build-up in the single-use syringe and in the cannula pressure to the rear, that is to say in the direction of the push rod 14 , can be reduced, but it is ensured that the push rod 14 always immediately the plunger of the disposable syringe rests and a defined residual back pressure in the disposable syringe is guaranteed. After actuating the movable handle 15 , the rocker arm 20 again engages in the toothing 12 of the push rod 14 and again builds up a pressure to overcome the back pressure and thereby to inject the medium into the syringe. The proposed design of the known device thus enables precise control of the amount of the medium to be injected.
Da die Neigung der Zahnung 12 der Schubstange 14 der Schrägung des Sperrkörpers 24 entspricht, wird der Vorschub der Schubstange 14 bei Betätigung des bewegli chen Griffstücks 15 nur unwesentlich erschwert. Since the inclination of the teeth 12 of the push rod 14 corresponds to the inclination of the locking body 24 , the feed of the push rod 14 is only insignificantly complicated when the movable handle 15 is actuated.
Die dargestellte Ausbildung der Aufnahme 10 aus zwei Halbschalen 28, 30, die mit einem Abstand 32 voneinan der angeordnet sind und über zwei seitlich abstehende, mit Schlitzen 34 versehene Aufnahmeblöcke 36 sowie einen Steg 38 miteinander verbunden sind, ermöglichen ein einfaches Auswechseln der Einmal-Spritze: Deren Griffplatte 40 wird nach Rückziehen der Schubstange 14 derart in die Halbschalen eingelegt, daß der Zylinder 44 in der vorderen Halbschale 28 und der Kolben 46 in der hinteren Halbschale 30 lagert und die den Zylinder 44 der zu entleerenden Einmal-Spritze nach oben ab schließende Griffplatte 40 in die Schlitze 34 der Auf nahmeblöcke 36 sowie dem Abstand 32 zwischen den beiden Halbschalen 28, 30 liegt. Anders als bei der vorbekann ten Injektions-Pistole ist ein Auswechseln durch ein einfaches Abheben der geleerten Einmal-Spritze nach oben und anschließendes Einlegen der neuen Einmal- Spritze in die Aufnahme 10 möglich.The illustrated design of the receptacle 10 from two half-shells 28, 30 , which are arranged at a distance 32 from one another and are connected to one another via two laterally projecting receptacle blocks 36 provided with slots 34 and a web 38 , enable simple replacement of the single-use syringe : The handle plate 40 is inserted after retraction of the push rod 14 in the half-shells so that the cylinder 44 is in the front half-shell 28 and the piston 46 in the rear half-shell 30 and the cylinder 44 of the single-use syringe to be emptied up closing Handle plate 40 in the slots 34 of the on blocks 36 and the distance 32 between the two half-shells 28, 30 is. In contrast to the previously known injection pistol, replacement is possible by simply lifting the empty disposable syringe upwards and then inserting the new disposable syringe into the receptacle 10 .
Die vorgeschlagene Vorrichtung sichert einen sofortigen Druckabfall und erlaubt eine genaue Dosierung des zu spritzenden Mediums.The proposed device ensures an immediate Pressure drop and allows an exact dosage of the splashing medium.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863640010 DE3640010C1 (en) | 1986-11-22 | 1986-11-22 | Device for emptying a disposable syringe against high pressure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863640010 DE3640010C1 (en) | 1986-11-22 | 1986-11-22 | Device for emptying a disposable syringe against high pressure |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3640010C1 true DE3640010C1 (en) | 1988-07-14 |
Family
ID=6314599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19863640010 Expired DE3640010C1 (en) | 1986-11-22 | 1986-11-22 | Device for emptying a disposable syringe against high pressure |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3640010C1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3800743A1 (en) * | 1988-01-13 | 1989-08-03 | Edwin Dr Med Klaus | Injection gun for medical purposes |
CN103648557A (en) * | 2011-07-07 | 2014-03-19 | 李喜永 | Syringe pressure generating and pressure displaying device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3110310A (en) * | 1961-07-20 | 1963-11-12 | Ideal Instr & Mfg Co Inc | Metering hypodermic syringe |
US3517668A (en) * | 1967-10-16 | 1970-06-30 | Bio Neering Inc | Multiple dosage veterinary injection gun |
-
1986
- 1986-11-22 DE DE19863640010 patent/DE3640010C1/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3110310A (en) * | 1961-07-20 | 1963-11-12 | Ideal Instr & Mfg Co Inc | Metering hypodermic syringe |
US3517668A (en) * | 1967-10-16 | 1970-06-30 | Bio Neering Inc | Multiple dosage veterinary injection gun |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3800743A1 (en) * | 1988-01-13 | 1989-08-03 | Edwin Dr Med Klaus | Injection gun for medical purposes |
CN103648557A (en) * | 2011-07-07 | 2014-03-19 | 李喜永 | Syringe pressure generating and pressure displaying device |
CN103648557B (en) * | 2011-07-07 | 2016-06-22 | 李喜永 | The pressure of syringe produces and pressure-display device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |