DE331326C - Head for guiding the plunger rod in injection or similar medical syringes - Google Patents

Head for guiding the plunger rod in injection or similar medical syringes

Info

Publication number
DE331326C
DE331326C DENDAT331326D DE331326DD DE331326C DE 331326 C DE331326 C DE 331326C DE NDAT331326 D DENDAT331326 D DE NDAT331326D DE 331326D D DE331326D D DE 331326DD DE 331326 C DE331326 C DE 331326C
Authority
DE
Germany
Prior art keywords
head
syringe
injection
guiding
plunger rod
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
DENDAT331326D
Other languages
German (de)
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.)
Carl Braun KG
Original Assignee
Carl Braun KG
Publication date
Application granted granted Critical
Publication of DE331326C publication Critical patent/DE331326C/en
Expired legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31501Means for blocking or restricting the movement of the rod or piston
    • A61M2005/3151Means for blocking or restricting the movement of the rod or piston by friction
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31501Means for blocking or restricting the movement of the rod or piston
    • A61M5/31505Integral with the syringe barrel, i.e. connected to the barrel so as to make up a single complete piece or unit

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

Kopf. zur Führung der Kolbenstange bei Injektions- oder ähnlichen ärztlichen Spritzen. Vorliegende Konstruktion betrifft einen leicht abnehmbaren Kopf an Inj ektions- oder ähnlichen ärztlichen Spritzen, der die Kolbenstange zentrisch führt und mittels Lappen, die über den wulstförmigen Rand des Spritzenzylinders greifen, nach Art eines Bajonettverschlusses durch eine Drehung auf der Spritze befestigt wird, ohne daß es nötig ist, irgendwelche Metallteile durch Aufkitten oder sonstige Befestigungsweise an dem Glaszylinder der Spritze, wie es bisher geschieht, anzubringen. Ferner ist eine sogenannte Schleppfeder -angeordnet, die auf die Kolbenstange bremsend einwirkt, wodurch verhindert wird, daß bei vertikaler Haltung der Spritze der Kolben durch seine eigene Schwere den Spritzeninhalt herausdrückt.Head. for guiding the piston rod with injection or similar medical syringes. The present construction relates to an easily detachable one Head of injection or similar medical syringes with the piston rod centered leads and by means of flaps that over the bead-shaped edge of the syringe barrel grab, like a bayonet lock by turning the syringe is attached without the need for any metal parts by cementing or other method of attachment to the glass cylinder of the syringe, as has been done so far, to attach. Furthermore, a so-called drag spring is arranged on the piston rod acts braking, whereby it is prevented that when the syringe is held vertically the plunger pushes out the contents of the syringe by its own weight.

In Fig. i bis 3 ist der mit den beiden Lappen a versehene Kopf b dargestellt, dessen näpfchenförmiger Teil c in die Bohrung des Zylinders d paßt und dadurch ohne weiteres den zentrischen Sitz sowohl des eigentlichen Kopfes wie der Kolbenstange c sichert. Das Befestigen des Kopfes auf der Spritze geschieht durch Einführen des Näpfchens c in den Zylinder d. Dabei passieren zunächst die beiden Lappen a die in dem Glasrand f angebrachten beiden Kerben g (in der Zeichnung, Fig. i, ist die gegenüberliegende Kerbe verdeckt), darauf werden die Lappen a nach rechts oder links um einen beliebigen Winkel von den Kerben g fortgedreht, wodurch ein selbsttätiges Lösen des Kopfes verhindert wird.In Fig. I to 3, the head b provided with the two tabs a is shown, whose cup-shaped part c fits into the bore of the cylinder d and thus without furthermore the centric seat of both the actual head and the piston rod c backs up. The head is attached to the syringe by inserting the Cup c in the cylinder d. First, the two lobes a die in the glass rim f made two notches g (in the drawing, Fig. i, is the opposite notch covered), then flaps a to the right or left rotated away from the notches g by any angle, whereby an automatic Loosening of the head is prevented.

DurchAnbringungdersichelförmigenSchlitzeh wird ein federnder Zustand der sich dadurch bil- denden Segmentstücke i, die in die Lappen a auslaufen, herbeigeführt und ein guter Sitz des Kopfes auf der Spritze erzielt.DurchAnbringungdersichelförmigenSchlitzeh is a resilient state of the fact education Denden segment pieces i, the leak in the flaps a, brought about and achieved a good fit of the head on the syringe.

Die Hülse k, welche die Führung der Kolbenstange e bildet, ist mit den beiden quer zur Kolbenstange laufenden Schlitzen l versehen, in welchen die freien Enden der Feder in (Fig. q.) gelagert sind, so daß sie einen Druck auf die Kolbenstange ausüben können, wodurch verhindert wird, daß bei senkrechter Haltung der Spritze der Spritzeninhalt durch das eigene Gewicht des Kolbens herausgedrückt wird.The sleeve k, which forms the guide of the piston rod e, is with the two slits l running across the piston rod, in which the free ends of the spring in (Fig. q.) Are mounted so that they exert a pressure on the Piston rod can exercise, which prevents that when held upright The contents of the syringe are pushed out of the syringe by the weight of the plunger will.

Durch den Wulst n wird die Feder nz in ihrer Lage gehalten.The spring nz is held in its position by the bead n.

Claims (1)

PATENTANSPRÜCHE: i. Kopf zur Führung der Kolbenstange bei Inj ektions- oder ähnlichen ärztlichen Spritzen, gekennzeichnet durch einen Körper (b) mit durch Schlitze (h) federnden Lappen (a), die zum Befestigen auf dem mit Kerben (g) versehenen Rand (f) der Spritze (d), ähnlich einem Bajonettverschluß, dienen, wobei ein im Zentrum des Körpers (b) vorgesehener näpfchenförmiger Teil (c), der in die Bohrung des Spritzenzylinders paßt, den zentrischen Sitz des Kopfes auf der Spritze sichert. a. Eine Ausführungsform nach Anspruch i, dadurch gekennzeichnet, daß eine Hülse (k), die zur eigentlichen Führung der Kolbenstange dient, mit zwei Schlitzen (l) versehen ist, in denen die beiden freien Teile einer Feder (m, Fig. q.) gelagert sind, die durch ihren Druck ein unfreiwilliges Gleiten der Kolbenstange bzw. des Kolbens verhindern. PATENT CLAIMS: i. Head for guiding the plunger rod in injection or similar medical syringes, characterized by a body (b) with tabs (a) resilient through slots (h ), which are for fastening on the edge (f) of the syringe provided with notches (g) (d), similar to a bayonet lock, are used, a cup-shaped part (c) which is provided in the center of the body (b) and which fits into the bore of the syringe cylinder, securing the central seat of the head on the syringe. a. An embodiment according to claim i, characterized in that a sleeve (k) which is used to actually guide the piston rod is provided with two slots (l) in which the two free parts of a spring (m, Fig. Q.) Are mounted which, through their pressure, prevent the piston rod or piston from sliding involuntarily.
DENDAT331326D Head for guiding the plunger rod in injection or similar medical syringes Expired DE331326C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE331326T

Publications (1)

Publication Number Publication Date
DE331326C true DE331326C (en) 1921-01-05

Family

ID=6196199

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT331326D Expired DE331326C (en) Head for guiding the plunger rod in injection or similar medical syringes

Country Status (1)

Country Link
DE (1) DE331326C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073691B (en) * 1955-04-04 1960-01-21 Hertig Lau sänne Werner (Schweiz) Koi syringes for medical purposes
WO1989009630A1 (en) * 1988-04-08 1989-10-19 Mohandes Bader Syringe, in particular for medical use
EP1417981A1 (en) * 2002-11-11 2004-05-12 Schott Glas Medical Syringe
WO2010063687A1 (en) * 2008-12-04 2010-06-10 Sanofi-Aventis Deutschland Gmbh Injection device with holding means to prevent unintentional movements of piston rod

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073691B (en) * 1955-04-04 1960-01-21 Hertig Lau sänne Werner (Schweiz) Koi syringes for medical purposes
WO1989009630A1 (en) * 1988-04-08 1989-10-19 Mohandes Bader Syringe, in particular for medical use
EP1417981A1 (en) * 2002-11-11 2004-05-12 Schott Glas Medical Syringe
US7361162B2 (en) 2002-11-11 2008-04-22 Schott Ag Medicinal syringe with piston stopper withdrawal and rotation-limiting means
WO2010063687A1 (en) * 2008-12-04 2010-06-10 Sanofi-Aventis Deutschland Gmbh Injection device with holding means to prevent unintentional movements of piston rod
RU2526438C2 (en) * 2008-12-04 2014-08-20 Санофи-Авентис Дойчланд Гмбх Injection device with retainer for preventing unintentional movement of piston rod
CN102238974B (en) * 2008-12-04 2014-09-03 赛诺菲-安万特德国有限公司 Injection device with holding means to prevent unintentional movements of piston rod
US8915881B2 (en) 2008-12-04 2014-12-23 Sanofi-Aventis Deutschland Gmbh Injection device with holding means to prevent unintentional movements of piston rod
US9415170B2 (en) 2008-12-04 2016-08-16 Sanofi-Aventis Deutschland Gmbh Injection device with holding means to prevent unintentional movements of piston rod

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