CH224512A - Dismountable plunger injection syringe. - Google Patents
Dismountable plunger injection syringe.Info
- Publication number
- CH224512A CH224512A CH224512DA CH224512A CH 224512 A CH224512 A CH 224512A CH 224512D A CH224512D A CH 224512DA CH 224512 A CH224512 A CH 224512A
- Authority
- CH
- Switzerland
- Prior art keywords
- injection syringe
- dismountable
- threaded
- plunger
- jaws
- Prior art date
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
- A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
- A61M5/31583—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod
- A61M5/31586—Constructional features or modes of drive mechanisms for piston rods based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod performed by rotationally moving or pivoted actuator, 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
- A61M5/31533—Dosing mechanisms, i.e. setting a dose
- A61M5/31535—Means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing, means allowing correction of overset dose
-
- 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
- A61M5/31551—Mechanically operated dose setting member by rotational movement of dose setting member, e.g. during setting or filling of a syringe including 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
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
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
Zerlegbare Kolben-Injektionsspritze.
Gegenstand der vorliegenden Erfindung ist eine zerlegbare Kolben-Injektionsspritze, die sich dadurch kennzeichnet, dass die Kol benstange als Gewindespindel ausgebildet ist und sich durch eine auf dem Spritzenzylinder vorgesehene Kolbenstangenfiihrung hindurch erstreckt, die gegeneinanderverschiebbare Gewindebacken aufweist, denen ein Steuerelement zugeordnet ist, um sie entgegen der Wirkung einer Federkraft in Eingriff mit der Gewindespindel zu bringen, so dass der letzteren je nach der Lage der Gewindebacken eine achsiale Verschiebungs- oder eine Schraubenbewegung erteilt werden kann.
Auf der beiliegenden-Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes veranschaulicht.
Fig. 1 zeigt die Kolben-Injektionsspritze in Seitenansicht ;
Fig. 2 ist, in einem grösseren Massstabe gezeichnet, ein Vertikalschnitt durch den hintern Abschluss der Spritze ;
Fig. 3 und 4 sind zwei Querschnitte nach der Linie III-III in Fig. 3 bei verschiedener Lage der Teile, und
Fig. 5 zeigt eine Einzelheit
Die dargestellte Injektionsspritze hat einen mit einer Volumenskala versehenen Glaszylinder a, in welchem ein mit einer Kolbenstange bt versehener B : olben b eingepasst ist.
Diese Kolbenstange b'ist als Ge windespindel ausgebildet und erstreckt sich durch eine am hintern Ende des Glaszylinders a vorgesehene Kolbenstangenführung, die einen mittels einer Schlitz-und Stiftverbindung auf einer Fassung am Glaszylinder a festgehaltenen Deckel c aufweist, der mit einem Kopf cl versehen ist (Fig. 2 und 3), auf welchen eine Deckscheibe d aufgeschraubt ist. Zwischen dieser Deckscheibe d und dem Deckel c ist ein aussen gerauhter Drehring e gelagert, der innen oval ist. In Ausnehmungen im Kopf c'des Deckels c sind einander gegenüber zwei Gewindebacken f angeordnet.
Diese beiden Gewindebacken werden von zwei in Bohrungen im Kopf c'angeordneten Druckfedern g aubes Eingriff mit dem Gewinde der Kolbenstange bl gehalten (Fig. 4). Bei dieser Lage der Gewindebacken f kann der Kolbenstange bl mittels der an ihrem äussern Ende befestigten Griffscheibe b2 wie bei einer ge wohnlichen Injektionsspritze eine achsiale Verschiebungsbewegung in beiden Richtun- gen erteilt werden.
Wird aber der Drehring e von seiner in Fig. 4 gezeigten Lage um 90 in die in Fig. 3 gezeigte Lage gedreht, so werden die Gewindebacken f von den auf dem kleinsten Durchmesser einander gegen überliegenden Stellen des innen ovalen Drehringes e gegeneinandergedrückt und in Eingriff mit dem Gewinde der Kolbenstange bl gehracht, so dass der letzteren nun durch Drehen der Griffseheibe b2 eine Schraubenbewegung erteilt werden kann.
Je nach der Lage der Gewindebacken f, die also einerseits durch die Druckfedern g und anderseits durch den Drehring e bestimmt wird, ist es somit möglich, der Kolbenstange bl, die mit dem Kolben b (Fig. 5) leicht losbar verbunden ist, nach Wunsch entweder eine achsiale Längsversehiebung oder eine Schraubenbewegung zu erteilen.
Die Spritze lässt sich demzufolge in vorteil hafter Weise für schnell und für langsam einzuspritzende Flüssigkeiten verwenden.
Dismountable plunger injection syringe.
The present invention relates to a collapsible plunger injection syringe, which is characterized in that the plunger rod is designed as a threaded spindle and extends through a plunger rod guide provided on the syringe cylinder, which has threaded jaws which can be displaced against one another and to which a control element is assigned to counter them to bring the action of a spring force into engagement with the threaded spindle, so that the latter can be given an axial displacement or a screw movement depending on the position of the threaded jaws.
An exemplary embodiment of the subject matter of the invention is illustrated in the accompanying drawing.
1 shows the plunger injection syringe in side view;
FIG. 2, drawn to a larger scale, is a vertical section through the rear end of the syringe;
3 and 4 are two cross-sections along the line III-III in FIG. 3 with the parts in different positions, and
Fig. 5 shows a detail
The injection syringe shown has a glass cylinder a provided with a volume scale, in which a piston rod b provided with a piston rod bt is fitted.
This piston rod b 'is designed as a threaded spindle and extends through a piston rod guide provided at the rear end of the glass cylinder a, which has a cover c held on a socket on the glass cylinder a by means of a slot and pin connection and provided with a head cl ( 2 and 3), onto which a cover disk d is screwed. A rotating ring e, roughened on the outside and oval on the inside, is mounted between this cover plate d and the cover c. Two threaded jaws f are arranged opposite one another in recesses in the head c ′ of the cover c.
These two threaded jaws are held in engagement with the thread of the piston rod b1 by two compression springs arranged in bores in the head c ′ (FIG. 4). With the threaded jaws f in this position, the piston rod bl can be given an axial displacement movement in both directions by means of the grip disk b2 attached to its outer end, as in a conventional injection syringe.
If, however, the rotating ring e is rotated from its position shown in FIG. 4 by 90 into the position shown in FIG. 3, the threaded jaws f are pressed against one another by the points of the inner oval rotating ring e which are opposite one another on the smallest diameter and engage with the thread of the piston rod bl, so that the latter can now be given a screw movement by turning the handle washer b2.
Depending on the position of the threaded jaws f, which is determined on the one hand by the compression springs g and on the other hand by the rotary ring e, it is thus possible to adjust the piston rod bl, which is easily detachably connected to the piston b (FIG. 5), as desired to issue either an axial longitudinal displacement or a screw movement.
The syringe can therefore be used in an advantageous manner for liquids to be injected quickly and slowly.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH224512T | 1942-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH224512A true CH224512A (en) | 1942-11-30 |
Family
ID=4453565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH224512D CH224512A (en) | 1942-06-10 | 1942-06-10 | Dismountable plunger injection syringe. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH224512A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3128765A (en) * | 1962-07-17 | 1964-04-14 | American Home Prod | Hypodermic syringe and dose dispenser |
EP0217559A1 (en) * | 1985-09-05 | 1987-04-08 | Advanced Cardiovascular Systems, Inc. | Inflating and deflating device |
EP0937476A3 (en) * | 1998-02-23 | 1999-11-17 | Becton, Dickinson and Company | Low-cost medication delivery pen |
-
1942
- 1942-06-10 CH CH224512D patent/CH224512A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3128765A (en) * | 1962-07-17 | 1964-04-14 | American Home Prod | Hypodermic syringe and dose dispenser |
EP0217559A1 (en) * | 1985-09-05 | 1987-04-08 | Advanced Cardiovascular Systems, Inc. | Inflating and deflating device |
EP0937476A3 (en) * | 1998-02-23 | 1999-11-17 | Becton, Dickinson and Company | Low-cost medication delivery pen |
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