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Disposable syringe with protection against reuse

A disposable, syringe technology, applied in the direction of syringes, hypodermic injection devices, infusion sets, etc., to achieve the effects of easy use, reduced relative changes, and simplified operations

Inactive Publication Date: 2010-09-15
埃卡尔工程有限公司技术供应及自动化
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the purpose of the invention described there is to avoid the backflow of the substance in the syringe, so that no means for ensuring single-use are not provided in this syringe

Method used

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  • Disposable syringe with protection against reuse
  • Disposable syringe with protection against reuse
  • Disposable syringe with protection against reuse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0046] The same parts have the same reference numerals in the various drawings. These sections are usually only detailed once.

[0047] figure 1 shows a possible construction of a disposable syringe 1 according to the invention with a barrel 3 having an injection nozzle 5 on one side thereof and a piston 7 that can be pushed into the side remote from the injection nozzle 5 . On its side facing the injection nozzle, the piston 7 has a piston part 9 which, together with the rest of the piston 7, is reciprocable within the cylinder 3 . Inside the barrel 3 , between the injection nozzle 5 and the piston part 9 , a region of variable size that can be filled with the substance to be injected is formed, said region being delimited by the barrel 3 and the piston part 9 . On the side opposite the piston part 9 , the piston 7 has an actuating part 13 which is connected to the rest of the piston 7 by means of a predetermined breaking point 15 .

[0048] The predetermined breaking poi...

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Abstract

The invention relates to a disposable syringe (1) with protection against reuse, which comprises a cylinder (3) with an injection nozzle (5) and a piston (7). Said piston (7) has a piston section (9) abutting the injection nozzle (5), a piston rod (17), and an actuation section (13) located away from the piston section (9). To create a disposable syringe (1) with protection against reuse which is simple and cost-effective to produce and of which the means for providing the protection against reuse is arranged outside the area (11) of the disposable syringe (1) which can be filled with an injectable substance, it is proposed that the piston rod (17) have a locking piece (19), the cylinder have a counter-locking piece (27), and the piston (7) have at least one predetermined breaking point (15) in such a way that when the piston rod (17) is pushed into the cylinder (3), the locking piece (19) and the counterlocking piece (27) are locked together and prevent a removal of the piston rod (17) from the cylinder (3), and that the predetermined breaking point (15) be designed such that said predetermined breaking point (15) breaks when the actuation section is pulled.

Description

technical field [0001] The invention relates to a single-use syringe with an anti-reuse device comprising: a barrel having an injection nozzle; a piston having a piston part facing the injection nozzle, a piston rod and an operating part remote from the piston part. Background technique [0002] Such disposable syringes are known from EP 557 511A1, GB 2 246 297A and EP 442 260A1, which have a locking part at the injection nozzle and on the side of the piston part facing the injection nozzle, said locking part at the piston The sections lock into each other when pushed all the way into the cylinder. The predetermined breaking point also present in this frontal region of the disposable syringe ensures that the syringe is reliably destroyed after one use. A disadvantage of this type of syringe is that the locking part is located in the region of the syringe which can be filled with the substance to be injected and thus leads to direct contact with the substance to be injected...

Claims

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Application Information

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IPC IPC(8): A61M5/50A61M5/315
CPCA61M5/31511A61M5/5066A61M2005/5073A61M2005/31516
Inventor 莫妮卡·埃卡尔
Owner 埃卡尔工程有限公司技术供应及自动化
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