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Discharge device having a locking element

A component and locking technology, which is applied to devices for coating liquid on the surface, hypodermic injection equipment, infusion sets, etc., can solve problems such as small fluid volume, disengagement, and slippage of stopper components

Inactive Publication Date: 2012-10-24
MEDMIX SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the problem with aspirating fluid is that, due to the negative pressure present in the injection body, when the plunger is released, the plunger also springs back slightly in the direction of the outflow opening, so that the fluid finally withdrawn less than desired
The resulting danger is that the stop element slips or even disengages completely when operating with the discharge device

Method used

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  • Discharge device having a locking element
  • Discharge device having a locking element
  • Discharge device having a locking element

Examples

Experimental program
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Effect test

Embodiment Construction

[0049] Figures 1 to 7 The discharge device according to the invention is shown according to a preferred embodiment. The discharge device in this embodiment is a syringe, which is used, for example, to administer a drug or to discharge an adhesive. The discharge device has a housing 1 in which a plunger unit 2 is arranged displaceable in the axial direction.

[0050] The housing 1 , also referred to below as the syringe body, is largely delimited by a surrounding, hollow-cylindrical-forming side wall 11 , which has a proximal and a distal end. In this case, the side wall 11 delimits a cylindrical reservoir 16 extending within it. In this case, the reservoir 16 defines by its cylindrical shape the longitudinal direction (axial direction) and the opposite radial direction of the discharge device as well as the reservoir central axis. A substantially cylindrical head 12 is arranged to be attached to the distal end of the side wall 11, said head having a through, axial opening ...

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PUM

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Abstract

The invention relates to a discharge device for discharging a fluid product, for example, in the form of a syringe. The discharge device comprises a housing (1), which bounds a reservoir (16), and a piston (23), which is slidably arranged in the housing (1) in a longitudinal direction in order to discharge the fluid product distally from the reservoir (16) through an outlet opening (13). A window opening (15) is formed in a circumferential side wall (11) of the housing (1). An insert element (3) is inserted into said window opening (15) perpendicularly to the longitudinal direction. The insert element (3) protrudes into the reservoir (16). In this way, a motion of the piston (23) can be limited in the proximal direction in order to prevent the piston (23) from falling out, and the metering of the fluid product can be made easier in that the insert element (3) establishes a detachable locking connection with an advancing element (27) for the piston (23).

Description

technical field [0001] The invention relates to a discharge device for discharging a fluid product, the discharge device having a housing and a plunger movable in the housing. Background technique [0002] Discharge devices in the form of syringes have generally been known for a long time. Commercial standard syringes have a syringe body with a plunger unit that can be pushed into the syringe body from the proximal end and a distal outlet opening. The plunger unit has a plunger rod with a plunger mounted distally on a plunger that is displaceable in a sealed manner in the interior of the injection body. In order to take up fluid in the syringe, the plunger unit can be withdrawn in the proximal direction, so that a negative pressure is generated in the syringe body and the fluid is sucked in through the distal outflow opening. When the plunger unit is then moved in the distal direction, the fluid is then pushed out through the outflow opening. [0003] There is a danger he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C17/01A61M5/315B05C17/005
CPCB05C17/00593B05C17/00583B05C17/012B05C17/00553A61M5/31505A61M5/31595A61M5/19
Inventor 拉尔夫·埃贡·凯泽威廉·布雷姆
Owner MEDMIX SYST