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micro pump

A pumping and inlet technology, used in pumps, piston pumps, flow monitors, etc., to solve problems such as discomfort in detecting air bubbles, complicated operations, and incorrect sensors

Active Publication Date: 2016-08-10
SENSILE PAT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many conventional systems, a separate pressure sensor is installed in the system for the purpose of detecting blockages or leaks, however such systems are usually not suitable for reliable detection of air bubbles
Also, the presence of separate sensors complicates the pumping system and complicates and costs the operation
The pump and pressure sensors are independent and there is a certain risk that the sensor may operate incorrectly without being noticed without interrupting the operation of the pump

Method used

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Embodiment Construction

[0043] With reference to the accompanying drawings, in particular Figures 1a to 1c , an embodiment of the pump module 2 according to the present invention comprises a housing 4 and a rotor 6 rotatably mounted in the housing. The rotor includes a first axial extension 14 that is generally cylindrical and a second axial extension 16 that is also generally cylindrical. The diameter D1 of the first axial extension is larger than the diameter D2 of the second axial extension. The housing 4 comprises a rotor housing part 8 comprising cavities 10 and 12 in which the rotor is mounted, the rotor cavity comprising a first part 10 for accommodating a first axial extension 14 and for accommodating a first axial extension 14 In the second part 12 of the second axial extension 16 of the rotor, the diameter of the first part is larger than the diameter of the second part. The housing also includes an inlet passage 26 open into the second cavity portion and configured to be coupled to a li...

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PUM

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Abstract

A pump comprising a housing comprising a rotor chamber, inlet and outlet channels opening into the rotor chamber, and inlet and outlet seals mounted on a surface of the chamber, and a rotor rotatably and axially slidably received in the chamber and comprising a first axial extension comprising a liquid supply channel and a second axial extension comprising a liquid supply channel, the first and second axial extensions having different diameters. The inlet and outlet seals engage a surface of the rotor, whereby the liquid supply channel of each axial extension in conjunction with a corresponding seal forms a valve that opens and closes as a function of the angular and axial displacement of the rotor. At least one of the inlet and outlet channels opens transversely into the rotor chamber and at least one of the inlet and outlet seals forms a closed circuit circumscribing said at least one of the inlet and outlet channels.

Description

technical field [0001] The invention relates to a micropump having a rotatably and circumferentially movable rotor. The micropumps can be used especially in medical applications for drug delivery, for non-medical applications, or for diagnostic purposes. Background technique [0002] Micropumps are described in international applications WO2005039674 and WO2007074363 for the precise administration of small amounts of liquids or paste-like liquids. Rotational and axial movement of the rotor relative to the housing produces a pumping action, opening and closing valves to draw liquid into and out of the pump. Curved portions on the rotor cooperate with complementary cams on the housing so that when one of the valves is open, the rotor is displaced axially. When both valves are closed, the liquid is substantially incompressible due to a certain elasticity of the cavity containing the liquid, so the axial displacement of the rotor is substantially zero. The presence of air in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B7/04F04B7/06F04B9/04F04B19/00A61M5/142
CPCA61M5/14216A61M5/16831A61M5/36A61M2005/16863F04B7/045F04B7/06F04B9/042F04B9/047F04B19/006
Inventor D·热努P·克里斯滕F·罗宾H·蒂默
Owner SENSILE PAT AG