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Needleless injection device

An injection device, needle-free injection technology, applied in the field of injection parts, can solve problems such as inconvenience

Active Publication Date: 2014-05-28
ERBE ELEKTROMEDIZIN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a booster lever is used to generate pressure (optionally in combination with a suitable pressure-resistant syringe), it is inconvenient to generate pressure permanently by using manual force, e.g. by an assistant

Method used

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  • Needleless injection device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0068] figure 1 The illustrated injection device 10 includes a fluid applicator 11 and a fluid delivery arrangement for supplying fluid to the fluid applicator 11 . Preferably, the fluid is a physiological edible saline solution (NaCl solution) sprayed by the fluid applicator 11 in a suitable jet. Preferably, sharp, laminar, needle jets are preferred. However, other application situations which require and implement other jet forms can also be provided.

[0069] as in figure 1 As schematically shown in , a fluid applicator may be provided for open surgical applications and thus includes a handle 13 and a nozzle shaft 14 extending from the handle. The handle 13 may have an actuating member configured, for example, as a button 15 by means of which a valve for supplying away or blocking the nozzle shaft 14 can be actuated, or a regulating valve can also be actuated. At the distal end of the nozzle shaft 14 there may be provided a fluid discharge opening 17 which is closed by ...

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PUM

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Abstract

An injection device 10 has a fluid applicator 11 that is fed by a fluid delivery arrangement 12 containing an energy storage 29 such as a pressure vessel 36. The gas pressure obtained by the pressure vessel 36 directly or indirectly acts on a container that has been prefilled with the ejection fluid, such as the isosmotic NaCl solution, so that the fluid to be ejected is thus subject to constant pressure. With a valve 23, the user can initiate the ejection of the desired amount of fluid with constant intensity. A check valve 23 may also be a regulating valve which can be used by the user to vary the intensity of the effect. The basic characteristic of the present invention is that the ready-to-use injection device can be produced in a very high cost benefit manner. A user need only release the system, e.g., by puncturing the pressure vessel, to then be able to directly inject the fluid in a defined or metered manner via the probe, i.e., the fluid applicator. the check valve or regulating valve 23 can be disposed, released and actuated easily and visually. It is also possible to configure the entire injection device 10 as a single-use system and to prefill the fluid applicator up to its fluid exit opening. A aseptic sealing member can be arranged at the far-end of the fluid applicator via a protection cap 16.

Description

technical field [0001] The present invention relates to injection devices for needle-free fluid injection, in particular to injection parts for lifting or elevating the mucous membrane of the gastrointestinal tract or similar applications. Background technique [0002] Automatic injection devices for drug delivery are known which operate using a spring accumulator and a needle. Publication DE 69533811 T2 discloses such an example. The device includes a drug storage vessel connected to a hollow needle. In the inoperative position, this needle is retracted into the housing. A tensioned / tensioned spring is housed in the housing to allow the hollow needle to spring forward when triggered and will eject the drug through the hollow needle. [0003] Furthermore, devices are known for needle-free injection of fluids submucosally. For example, publication US 2009 / 0157114 A1 discloses an endoscope comprising a probe for needle-free submucosal injection. To achieve this, the probe...

Claims

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Application Information

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IPC IPC(8): A61M5/303
CPCA61B17/00234A61M5/30A61B2017/00269A61B17/3203A61B2017/00544A61B2017/00548A61B2017/320044F04C2270/041A61B17/32037
Inventor M.哈格R.屈纳
Owner ERBE ELEKTROMEDIZIN GMBH
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