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Multi-channel syringes for use with metering devices

A metering device, multi-channel technology, applied in the direction of measuring device, laboratory container, volume measurement, etc., to achieve the effect of simple structure, small tolerance and simple implementation

Active Publication Date: 2021-01-12
EPPENDIRF AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Replacement of piston unit and cylinder unit is not set

Method used

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  • Multi-channel syringes for use with metering devices
  • Multi-channel syringes for use with metering devices
  • Multi-channel syringes for use with metering devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0071]according tofigure 1 , The piston unit 1 has a driving rod 2, a cross rod 3 on the lower end of the driving rod 2, and a plurality of injection pistons 4 extending downward from the cross rod 3 and parallel to the driving rod 2. In this example, the piston unit 1 includes eight injection pistons 4.

[0072]The driving rod 2 has a cross-shaped profile with ribs 5.1, 5.2, 5.3, 5.4. The driving rod 2 is tapered from bottom to top. The ribs 5.1, 5.2 have a trapezoidal cross-section that is constant in the longitudinal direction. The ribs 5.3, 5.4 of the T-shaped profile pointing parallel to the crossbar also have a trapezoidal cross section, the height of which decreases upwardly.

[0073]A piston holding device 6 in the form of a cylindrical coupling section is provided on the upper end of the driving rod 2. The coupling section 6 has a plurality of surrounding ribs 7 on the periphery for reliable clamping by the metering device. According to another embodiment, the coupling section 6 ...

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Abstract

The invention relates to a multi-channel syringe for use with a metering device for metering liquids in a laboratory, said multi-channel syringe having a first holding device for a barrel holding device of a syringe barrel and having a Axially displaceable second holding means for the piston holding means of the injection piston, said multi-channel syringe comprising: a one-piece piston unit made of plastic, said piston unit having said piston holding A drive rod of the device, a cross bar oriented perpendicular to the drive rod on the lower end of the drive rod, a plurality of injection pistons protruding downward from the cross bar parallel to the drive rod, and On the pistons there is a surrounding sealing area; a one-piece barrel unit made of plastic comprising a frame and at least one row of syringe barrels arranged side by side in parallel and protruding downwards from the frame, in which syringe barrels Each syringe barrel has a lower syringe opening, an upper syringe opening and inside a running area for the injection piston of the piston unit, wherein each injection piston is inserted into the syringe barrel through the upper syringe opening and can be sealed with a sealing area and the cartridge holder is arranged above the syringe barrel and connected to the holder.

Description

Technical field[0001]The invention relates to a multi-channel syringe for use with a metering device for metering liquids in a laboratory, the multi-channel syringe having a first holding device with a barrel holding device for the syringe barrel And a second holding device capable of axial movement of the piston holding device for the injection piston.Background technique[0002]Pipettes are used especially for measuring liquids in medical, biological and chemical laboratories. The air cushion pipette has an integrated displacement device for air and at least one holder for the tip of the pipette. The displacement device usually consists of a cylinder with a movable piston guided sealingly in the cylinder. When the pipette tip is held on the holder, it is connected in communication with the displacement device. The air cushion can be moved by means of the displacement device, so that the liquid can be sucked into the pipette tip and discharged through the tip opening. After use, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F11/02B01L3/02G01N35/10
CPCB01L3/0217B01L3/0275G01F11/027G01N35/1065
Inventor B·赖希穆特
Owner EPPENDIRF AG