DE2228173A1 - APPLICATION SYRINGE - Google Patents

Description

Dr, F. Zumstein Sr. - Dr. E. Asemann DblLKoenigsberger - Dipl. Phy ». R. Holzhauer

Dr. F. Zumstein jun. Patent attorney

8 Munich 2, BräuhausttraB 4 / III

Erik Gustaf Johansson, Örtbro / S

A pplizioru n gsspri Tze

The present invention relates to an application syringe, preferably made of plastic material for single use consisting of a syringe plunger and a syringe body with flexible mouthpiece. Spraying this Af't are often used in odontological-clinical work (from Dentists) used for the application of plastic impression material when making fixed or loose bridges or of dentures.

Application syringes made of plastic are usually carried out by the so-called Compression molding manufactured. To obtain a syringe with a bendable mouthpiece, e3 requires a follow-up treatment of the Mouthpiece either by heating or by vigorous cold working however, this makes the accuracy worse * and creates the risk of cracking, bending back or clogging the mouthpiece opening arises. '

. 209881/0479

The present invention relates to a construction of the syringe body in the day mouthpiece can be bent to the exact desired location. The front cover of the syringe body is therefore flexible enough to bend Shaped mouthpiece which is arranged asymmetrically in relation to the end face of the syringe body. The object of the present invention is that the mouthpiece is arranged in such a way that a generator line of the mouthpiece mainly a continuation of the lateral surface of the syringe body represents and that the base line of the mouthpiece (connecting line) with a concave inwardly funnel-shaped End face of the syringe body is connected. The Enflache of the syringe plunger can be convex or conical, so that when it is pressed into the syringe body it becomes the concave or pushes out funnel-shaped end face of the syringe body inward.

The present invention is described in more detail with reference to the accompanying drawings, in which FIG. 1 shows a cross section of the syringe shows how it was made by compression molding with the mouthpiece in an upright position. figure Figure 10 shows a cross-section of the syringe with the mouthpiece bent to the side. Figures j5 and 4 show on a larger scale a cross-section of the front end of the syringe body with the mouthpiece part in an upright position, respectively bent to the side. The note designationeri are the same for all figures.

209881/041! "

The syringe according to the invention consists of a syringe plunger 1 and a syringe body 2. The front end of the syringe body 3 is provided with a bendable mouthpiece 4 which is made in one piece with the syringe body. The mouthpiece 4 is attached asymmetrically in relation to the end face 3 of the syringe body 2. The figures show the Ausführungsforin that a Generatrislinie of the mouthpiece in an upright position mainly a port setting the lateral surface DEAE represents the syringe body and that the base line of the mouth piece with a concave or inwardly flared end surface 3 of the syringe body is connected.

The end surface 5 of the syringe plunger 1 is convex or shaped like a truncated cone so that when it is pressed into the syringe body 2 it presses out the concave or funnel-shaped end surface 3 of the syringe body, the mouthpiece I) being bent to the side at the same time, which is illustrated in FIG . To the bend of the

Evening 3 is made easier by the material around the base of the mouthpiece 4 around and around the periphery of the Enflache 3 around provided with indentations 6 or bend marks.

The concavity of the end surface 3 and the placement. of the mouthpiece 4 on the concave end face determine the Bend angle of the mouthpiece. By bending the evening out, the mouthpiece is in its laterally bent position

209881/0479

fixed whereby a locking effect is achieved in contrast to cold bending where this is not the case. The material at the End surface 3 should be thinner than that of the lateral surface of the Syringe body so that Iierausbiegung is facilitated.

The syringe can also be delivered from the producer with the mouthpiece on the side be delivered bent. In such a case you can use the Make the bend the same while the syringe body is still warm from the molding press, so that a mandrel or the syringe plunger is introduced, is introduced, or is proceeded in a different way.

09801/0479

Claims (1)

PATKHT ANSPECHK 1. J application syringe, preferably made of plastic, • consisting of a syringe plunger (1) and a syringe body (2) whereby the end surface of the syringe body (3) is provided with a bendable mouthpiece (Ί) which is attached asymmetrically in relation to the end surface 3 of the syringe body is, characterized in that a generator line of the mouthpiece (k) mainly represents a continuation of the lateral surface of the syringe body (2) and that the base line of the mouthpiece is connected to a concave or inwardly funnel-shaped end surface (3) of the syringe body. 2. Application syringe according to claim 1, characterized in that das3 the end surface (5) of the syringe plunger (1) convex or conical so that it is pressed into the syringe body (2) the concave or inwardly funnel-shaped end surface (3) of the Syringe body pushes out < 3. Application syringe according to claim 1, characterized in that the material around the base of the mouthpiece (* J) and around the periphery of the end surface (3) is provided with depressions (6) around the bending out of the evening and thus the lateral bend the mouthpiece (Ί). 209.881 / OA7Ö