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Volumetric pump positioning indicator

IP.com Disclosure Number: IPCOM000198231D
Publication Date: 2010-Aug-01
Document File: 1 page(s) / 142K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present invention is related to the indication of pistons positioning in volumetric pump, and more precisely to the reciprocating piston pumps. The disclosed system can be applied to any piston pump and is particularly well suited for applications requiring a control of the pistons positioning.

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Volumetric pump with piston positioning indicator

The present invention is related to the indication of pistons positioning in volumetric pump, and more precisely to the reciprocating piston pumps. The disclosed system can be applied to any piston pump and is particularly well suited for applications requiring a control of the pistons positioning.

The reciprocating piston pump such as described in PCT IB 2005/2423 might be used in any type of fluid management system, including medical, industrial, chemical or pharmaceutical devices. Such devices are sometimes requiring an indication of the pistons positioning before, during and after operation.

As for examples, it is important to know the remaining volume of liquid in the pump. In other applications, the operator of the pump may require detecting or set upping manually the positioning of the pistons in the pump software (text or graphical interface) before loading or after unloading the disposable from the driving. During the assembly of the disposable, the positioning of the pistons within the cylinders is also very important for quality control.

Independently of the need, the problem of piston positioning in a reciprocating pump can be solved by the following invention:

The first principle is to apply preferably on the outer surface of the cylinder a scaling similar to the ones used for the syringes. Such marking can be integrated directly on the cylinder part during injection of the plastic disposable with a s...