DE807217C - Injection syringe - Google Patents

Injection syringe

Info

Publication number
DE807217C
DE807217C DEP7451A DEP0007451A DE807217C DE 807217 C DE807217 C DE 807217C DE P7451 A DEP7451 A DE P7451A DE P0007451 A DEP0007451 A DE P0007451A DE 807217 C DE807217 C DE 807217C
Authority
DE
Germany
Prior art keywords
piston rod
cap
piston
hole
syringe
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
Application number
DEP7451A
Other languages
German (de)
Inventor
Ludwig Bernhardt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DEP7451A priority Critical patent/DE807217C/en
Application granted granted Critical
Publication of DE807217C publication Critical patent/DE807217C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3155—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe
    • A61M5/31553—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe without axial movement of dose setting member
    • 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
    • A61M5/31533—Dosing mechanisms, i.e. setting a dose
    • A61M5/31545—Setting modes for dosing
    • A61M5/31548—Mechanically operated dose setting member
    • A61M5/3156—Mechanically operated dose setting member using volume steps only adjustable in discrete intervals, i.e. individually distinct 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
    • A61M5/31565—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
    • A61M5/3158—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 axially moving actuator operated by user, e.g. an injection button

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Description

Für medizinische Zwecke pflegt man mehrere verschiedene Größen von Injektionsspritzen zu verwenden. Es ist üblich, einen Satz von fünf Spritzen, nämlich zu I, 2, 5, 10 und 20 ccm zu gebrauchen. For medical purposes one maintains several different sizes of Use hypodermic syringes. It is common to use a set of five syringes, viz to use for 1, 2, 5, 10 and 20 ccm.

Nach der Erfindung wird die Anzahl dieser Spritzengrößen verringert, etwa auf zwei Größen, indem Spritzen mit stufenweise einstellbarem Hub hergestellt werden. Man kann dann z. B. mit einer Spritze für I, 2 und 5 ccm und einer zweiten Spritze für 10 und 20 ccm auskommen.According to the invention, the number of these syringe sizes is reduced, approximately to two sizes by making syringes with a gradually adjustable stroke will. You can then z. B. with a syringe for 1, 2 and 5 ccm and a second Syringe for 10 and 20 ccm get by.

Das wird dadurch erreicht, daß die Kolbenstange der Spritze einen oder mehrere Anschlagnocken hat, die sich beim Herausziehen an die Verschlußkappe anlegen und so den Hub begrenzen. This is achieved by making the plunger rod of the syringe one or has several stop cams, which are attached to the cap when it is pulled out create and thus limit the stroke.

Die Zeichnung zeigt ein Ausführungsbeispiel in Fig. I im Längsschnitt längs der Linie A-A der Fig. 2 und in Fig. 2 in Ansicht auf die Verschlußkappe bei herausgenommenem Kolben. The drawing shows an embodiment in Fig. I in longitudinal section along the line A-A of FIG. 2 and in FIG. 2 in a view of the closure cap removed piston.

I ist der Glaszylinder der Spritze, der in dem Düsenansatz 2 einerseits und in dem Halsring 3 andererseits befestigt ist. Die Verschlußkappe 4 ist in bekannter Weise mit Bajonettverschluß auf den Halsring 3 aufgesetzt. 5 ist der Kolben mit dem Kolbenring 6. Die Kolbenstange 7 hat in ihrer ganzen Länge bis auf ein kurzes Stück 8 nahe ihrem freien Ende einen eckigen Querschnitt und paßt damit genau in das eckige Loch 9. Dieses Loch geht an seiner einen Seite in den Schlitz 10 der Verschlußkappe über, die in üblicher Weise zum Einschieben der Kolbenstange dient. Aber dieser Schlitz ist nur so weit, daß das schon genannte kurze Stück 8 mit seinem schlankeren und runden Querschnitt hineinpaßt. Hineinschieben oder drehen kann man daher die Kolbenstange nur in der Stellung zur Verschlußkappe, in der der Kolben völlig vorgestoßen ist. Beim Herausziehen gleitet der eckige Teil der Kolbenstange undrehbar in dem Loch der Verschlußkappe bis einer der Anschlagnocken 1 1, 12, 13 an die Verschlußkappe anstößt und so den Hub begrenzt. An zwei weiteren Seiten 14, I5 ist aber das Loch g der Verschlußkappe so ausgeweitet, daß dort die Anschlagnocken ungehindert hindurchgehen können. Nur an der vierten Seite I6 fehlt eine solche Ausweitung. Ein Nocken, der an dieser Seite steht, begrenzt deshalb allein den Hub. Es wäre auch möglich, die Kolbenstange drei-, fünf- oder sechskantig zu machen. Durch Drehen der Kolbenstange in ihre Anfangsstellung, wo der schlanke runde Teil 8 in der Verschlußkappe ist, kann man also den gewünschten Anschlagnocken so stellen, daß er den Huh begrenzt. Es sind so viele Anschlagnocken möglich, wie die Kolbenstange Flächen hat, und jeder von ihnen ergibt eine Stufe der Hubbegrenzung. I is the glass cylinder of the syringe, which is in the nozzle attachment 2 on the one hand and is fixed in the neck ring 3 on the other hand. The closure cap 4 is known in Put on the neck ring 3 with a bayonet lock. 5 is the piston with the piston ring 6. The piston rod 7 has its entire length except for a short one Piece 8 near its free end has an angular cross-section and thus fits exactly into the angular hole 9. This hole goes on one side in the slot 10 of the Closing cap over, which is used in the usual way to insert the piston rod. But this slot is only so wide that the already mentioned short piece 8 with his fits into a slimmer and round cross-section. You can slide it in or turn it therefore the piston rod only in the position relative to the cap in which the piston has advanced completely. The angular part of the piston rod slides when it is pulled out non-rotatable in the hole of the cap until one of the stop cams 1 1, 12, 13 abuts against the cap and thus limits the stroke. On two other sides 14, I5, however, the hole g of the closure cap is widened so that the stop cams there can walk through it unhindered. It is only missing on the fourth side 16 Expansion. A cam on this side therefore only limits the stroke. It would also be possible to make the piston rod three, five or hexagonal. By turning the piston rod to its starting position, where the slender round part 8 is in the cap, so you can set the desired stop cam so, that it limits the huh. As many stop cams as the piston rod are possible Has surfaces, and each of them gives a level of stroke limitation.

Auf der Verschlußkappe kann eine Pfeilmarke I7 angebracht sein, und der Kopf 18 kann Zahlenmarken 19 tragerr, die auf die Pfeilmarke gestellt, den Hub in Kubikzentimetern angeben. An arrow mark I7 can be affixed to the cap, and the head 18 can carry number marks 19, which are placed on the arrow mark, the hub Specify in cubic centimeters.

PATENTANSPRCCHE: 1. Injektionsspritze für medizinische Zwecke, dadurch gekennzeichnet, daß die Kolbenstange (7) einen oder mehrere Anschlagnocken (11, I2, I3) hat, die sich beim Herausziehen an die Verschlußkappe (4) anlegen und so den Hub begrenzen. PATENT CLAIM: 1. Syringe for medical purposes, thereby characterized in that the piston rod (7) has one or more stop cams (11, I2, I3) that apply to the cap (4) when it is pulled out and so on limit the stroke.

Claims (1)

2. Spritze nach Anspruch I, dadurch gekennzeichnet, daß das Loch in der Verschlußkappe, durch das die Kolbenstange hindurchgeht, an seiner einen Seite (16) den Durchgang des Anschlagnockens verhindert, dagegen an allen anderen Seiten so ausgeschnitten ist, (I4, I5), daß die Nocken frei hindurchgehen. 2. Syringe according to claim I, characterized in that the hole in the closure cap through which the piston rod passes, at one of its Side (16) prevents the stop cam from passing through, but on all others Pages is cut out (I4, I5) so that the cams go through freely. 3. Spritze nach Anspruch I und 2, dadurch gekennzeichnet, daß die Kolbenstange einen eckigen Querschnitt (7) hat, der sich in dem Loch der Verschlußkappe nicht drehen läßt, und nur nahe ihrem freien Ende eine runde Eindrehung (8) besitzt, die eine Drehung der Stange gestattet, sobald der Kolben völlig vorgestoßen ist. 3. Syringe according to claim I and 2, characterized in that the Piston rod has an angular cross-section (7) which is located in the hole in the closure cap does not turn, and only has a round recess (8) near its free end, which allows the rod to rotate once the piston is fully advanced.
DEP7451A 1948-10-02 1948-10-02 Injection syringe Expired DE807217C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP7451A DE807217C (en) 1948-10-02 1948-10-02 Injection syringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP7451A DE807217C (en) 1948-10-02 1948-10-02 Injection syringe

Publications (1)

Publication Number Publication Date
DE807217C true DE807217C (en) 1951-06-25

Family

ID=7361191

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP7451A Expired DE807217C (en) 1948-10-02 1948-10-02 Injection syringe

Country Status (1)

Country Link
DE (1) DE807217C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675492A (en) * 1970-06-10 1972-07-11 Mallinckrodt Chemical Works Measuring syringe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675492A (en) * 1970-06-10 1972-07-11 Mallinckrodt Chemical Works Measuring syringe

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