CZ269297A3 - Apparatus for dosage of infusions - Google Patents

Abstract

For medical technology equipment is intended for pump infusion (1). Means to store the container / 2 / infusion fluid with supply tube (3) and control unit / 7 / with mode setting elements dispensing where the means for storing the container / 2 / infusion fluids, eg hinge , ... (4) are provided with a sensor (5) by weight. whose output / 6 / is connected

Description

The invention relates to an infusion dosing device provided with a pump, means for receiving an infusion liquid container with a supply tube and a control unit with elements for adjusting the dosing mode.

BACKGROUND OF THE INVENTION

Existing infusion dosing devices are constructed on the principle of dosing the infusion liquid by means of a tube, a so-called set, of a defined diameter. The control unit is based on the entered tubing diameter and the rotational speed of the peristaltic pump. the number of waves of a progressive peristaltic pump, - controls the rate and amount of infused or nourished dosing. The dosing accuracy is thus directly proportional to the accuracy of the tubing diameter. When used for a longer period of time due to material fatigue, the tubing deforms and therefore the diameter decreases, resulting in inaccurate dosing at a constant peristaltic pump rotor speed or constant longitudinal wave of a sequential, so-called keyboard peristaltic pump, with error increasing with square . This change is very difficult to correct, direct feedback ^^ deformation correction, tubing. It is similar to the diaphragm pump application, where the dosing accuracy depends on the diaphragm pump chamber volume, which can change indefinitely due to external pressure conditions and material fatigue and thus cause inaccurate dosing. In addition, existing instruments require a drop detector to monitor the emptying of the container so as to prevent unwanted aeration of the set when the contents of the container are exhausted. However, it is often contaminated and therefore inoperable, which can have serious consequences for the patient.

The purpose of the present invention is to overcome the drawbacks described above and to improve the accuracy and safety of dosing.

J / basis used

The essence of the invention

The aforementioned purpose is achieved and the problem is solved by a pump-provided infusion device, means for receiving an infusion fluid reservoir with a lance and a control unit with dosing mode setting elements according to the invention, characterized in that the means for receiving the infusion liquid reservoir is provided with a mass sensor, the output of which is routed to the control unit. The means for receiving the infusion fluid container according to the invention are preferably formed by a hinge or a receiving plate.

The advantage of this embodiment is that the device in question, instead of the principle of accurately calculating the dosing amount on inaccurate parameters, particularly with respect to the tubing, corrected mass sensors, which output a signal whose value directly determines the weight of the dosing liquid. The electronic control system is calibrated according to the specific gravity of the liquid and allows to dispense infusions of solutions or feeding ‘with an accuracy several times higher than that of all existing systems. Indeed, the present embodiment is applicable to all types of metering devices, regardless of the principle on which the pump operates. Moreover, the device according to the invention does not need a drop detector, unless the electronic weight monitoring system stops dosing exactly at the moment. when the required amount was dosed, respectively. the weight of the container drops to a predetermined simplification of operation and service of the device, "drop detectors." The means for storing the liquid are solved very simply, the container can be hung freely, or a storage plate on which the container of the infusion liquid is simply built.

the maintenance of infusion containers is completely eliminated, just the hinge where it is

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be explained in more detail below with reference to the accompanying drawing, in which its arrangement is schematically illustrated.

and

Exemplary embodiment

As can be seen from the drawing, the present infusion dosing device provided with a pump of per se known peristaltic type and a control unit 7 with dosing mode setting elements is provided with means for receiving the infusion fluid reservoir 2 with a supply tube 3. These storage means are according to the invention, they consist of a hinge 4 with a mass sensor 5. The output 6 of the mass sensor 5 is connected to the signal input 8 of the control unit 7, which signals from the control output 9 control the pump i. they may also be formed by a receiving plate on which the infusion liquid container 2 is freely set. the device uses a system of corrected 5 weight sensors, which output a signal whose value determines directly

-Weight -Dose Liquid: ------- The Electronic Control System * is calibrated to the specific gravity of the liquid and allows to deliver infusion solutions or nutrition with very high accuracy.

Industrial applicability

The device is intended for medical technology.

Claims (3)

1. An infusion device equipped with a pump, means for storing an infusion liquid container with a supply tube and a control unit with dosing mode setting elements, characterized in that the means for storing an infusion liquid container <25 are provided with a mass sensor <55 whose output ( 6) is routed to the control unit (7). 2. The infusion device according to claim 1, characterized in that the means for receiving the reservoir <25 of the infusion liquid are formed by a hinge <4). 3. The infusion dispensing device of claim 1, wherein the means for receiving the reservoir <25 of the infusion fluid are formed by a storage plate.