DE102013209903B4 - Modular device for providing a multi-component mixed solution - Google Patents

Abstract

Modular device for providing a multi-component mixing solution with a) at least one first module (1) with containers (6) with liquid components and associated drip chambers (4) each having an ultrasonic sensor (5) detecting the presence of liquid in a ring - or U-shaped holding element, wherein - the holding element on the drip chamber (4) can be pushed and fixed in the pushed and thus clamped state and - the ultrasonic sensor (5) has a Utraschallsender and an ultrasonic receiver, wherein the drip chamber (5) between the Ultrasonic transmitter and the ultrasonic receiver for a transmission method or the drip chamber (5) between either the juxtaposed ultrasonic transmitter and ultrasonic receiver or a combination of ultrasonic transmitter and ultrasonic receiver and a reflector for ultrasonic waves for a reflection sound method is arranged, b) mindes at least a second module (2) with - electrical connection elements for power and data lines for a pre and a nachordenbares further second module (2), - driven syringe pumps (7), wherein the rotor of a stepping motor as a drive via a threaded spindle and a moving nut on the threaded spindle with the piston of the syringe of the syringe pump (7) is coupled, and - means for distance measurement between at least one fixed point and the movement nuts for determining the positions of the pistons of the syringes of the syringe pumps (7) and thus by the syringe pumps (7) to be conveyed volumes of the components and c) a third module (3) with a control device, wherein in each case a container (6) via at least one valve (8) with a syringe pump (7) and the respective syringe pump (7) via the valve (8 ) Are connected to a container (9) for the mixed solution via hose lines and the drives of the syringe pumps (7), the Einric Hungenungen for distance measurement and the ultrasonic sensors (5) are interconnected with the control device.

Description

The invention relates to modular devices for providing a multi-component mixed solution.

Means for providing mixed solutions are known, inter alia, from medical technology as a compounder. For metered delivery of individual components and known syringe pumps are used. These consist essentially of a cylindrical cavity with a movable piston. The cylinder has a cone-shaped nozzle for the inlet and outlet of a liquid. In the syringe pump, the piston is coupled to a translationally acting drive. With the movement of the piston, liquid can be sucked in or squeezed out.

The publication EP 0 960 627 A2 discloses a device for the central control and / or monitoring of infusion pumps, which has a plurality of controllable with respect to their functions and / or monitorable infusion pumps, which are connected to liquid reservoirs and a central infusion pump monitor. This sends control commands to each of the connected infusion pumps and can receive response data from them. A structural design of the control technology to the liquid reservoir is not the subject of this document.

Through the publication EP 0 189 491 A1 a device for the dosed simultaneous infusion of solutions is known. Several infusion containers are connected to a manifold, in which a volumetric pump is used, which promotes the solution mixture to the patient. A controller calculates drop counts from the infusion rates and controls valves in the drain lines so that one valve is held each time until a drop in number corresponding to the rate of infusion has fallen in an associated drip chamber. The supply of the solutions for the solution mixture is carried out via the acting normal force exclusively by the resulting droplets. The drop detectors, which may also be ultrasonic sensors, serve to count the drops. The mixed solution is supplied directly to the patient by means of the pump. A detection and thus a determination of the presence of a solution in the respective drop chamber does not take place. The composition of the solution mixture is based exclusively on the number of drops of the individual solutions.

The publication US 2002/0 064 880 A1 describes a fluid delivery system having a device for controlling the flow of fluids through a plurality of valves. The flow can be detected by a sensor. The amount of the individual fluids is determined via the valve, wherein the actuators are coupled to a cam.

The publication EP 0 543 259 A1 includes a multi-infusion system for dosed, continuous, simultaneous infusion of multiple infusion or drug solutions. A component is a gravity infusion device, which is provided with a drop detector, which is not further developed. Furthermore, pressure infusion apparatuses are provided which can output alarm signals.

Through the publication EP 0 343 501 A2 a multiple infusion system is known, wherein a flow element is provided, which causes the control device to deactivate the entire device upon detection of a flow stop. The device comprises containers, which are connected via a respective pump with the flow element. The delivery rate is controlled by a computing and control unit according to a predetermined program, which is not further elaborated.

The specified in claim 1 invention has for its object to provide a multi-component mixing solution easy.

This object is achieved with the features listed in claim 1.

The modular means for providing a multi-component mixing solution are characterized in particular by the fact that they are easily deployable.

• – das Halteelement auf die Tropfkammer aufschiebbar ist und im aufgeschobenen und damit geklemmten Zustand fixiert ist und
• – der Ultraschallsensor einen Utraschallsender und einen Ultraschallempfänger besitzt, wobei die Tropfkammer zwischen dem Ultraschallsender und dem Ultraschallempfänger für ein Durchschallungsverfahren oder die Tropfkammer zwischen entweder den nebeneinander angeordneten Ultraschallsender und Ultraschallempfänger oder einer Kombination aus Ultraschallsender und Ultraschallempfänger und einem Reflektor für Ultraschallwellen für ein Reflexionsschallverfahren angeordnet ist.

For this purpose, the modular device at least a first module with containers with liquid components and associated drip chambers, each having a presence of liquid detecting ultrasonic sensor in a ring-shaped or U-shaped holding member, wherein

• - The retaining element is pushed onto the drip chamber and is fixed in the pushed and thus clamped state and
• - The ultrasonic sensor has a Utraschallsender and an ultrasonic receiver, wherein the drip chamber between the ultrasonic transmitter and the ultrasonic receiver for a transmission method or the drip chamber between either the juxtaposed ultrasonic transmitter and ultrasonic receiver or a combination of ultrasonic transmitter and ultrasonic receiver and a reflector for ultrasonic waves for a reflection sound method is arranged ,

• – elektrischen Verbindungselementen für Energie- und Datenleitungen für ein vor- und ein nachordenbares weiteres zweites Modul,
• – angetriebenen Spritzenpumpen, wobei der Rotor eines Schrittmotors als Antrieb über eine Gewindespindel und eine Bewegungsmutter auf der Gewindespindel mit dem Kolben der Spritze der Spritzenpumpe gekoppelt ist, und
• – Einrichtungen zur Abstandsmessung zwischen wenigstens einem Fixpunkt und den Bewegungsmuttern zur Bestimmung der Positionen der Kolben der Spritzen der Spritzenpumpen und damit der durch die Spritzenpumpen zu fördernden Volumina der Komponenten.

Furthermore, the device comprises at least a second module with

• Electrical connection elements for power and data lines for a pre-and a reorderable further second module,
• - Powered syringe pumps, wherein the rotor of a stepping motor is coupled as a drive via a threaded spindle and a moving nut on the threaded spindle with the piston of the syringe of the syringe pump, and
• - Means for measuring the distance between at least one fixed point and the movement nuts for determining the positions of the pistons of the syringes of the syringe pumps and thus of the syringe pumps to be delivered volumes of the components.

In addition, the device has a third module with a control device, wherein in each case a container via at least one valve with a syringe pump and the respective syringe pump via the valve with a container for the mixed solution are connected via hose lines and the drives of the syringe pumps, the means for distance measurement and the ultrasonic sensors are connected together with the control device.

This provides the user with an easy-to-use and universally applicable device for providing a mixed solution consisting of several components. Universal refers to the possibility of easy combinability. The device can be easily realized by the modular structure according to the number of components for the mixed solution. Such mixed solutions may in particular be mixed solutions for parenteral nutrition or infusion solutions.

Advantageously, the ultrasonic sensors are used as liquid detectors (FLD) for detecting the liquid component in the drip chamber. The detection is simplified considerably, since the ultrasonic sensors are implemented housed. Faults from contamination, which can lead to incorrect measurements in optical systems, are avoided. A conical design of the housing in conjunction with the existing of a flexible material drip chamber ensures easy and secure fixation.

For this purpose, the ultrasonic sensor is located in the ring-shaped or U-shaped holding element, so that the holding element can be pushed onto the drip chamber and is fixed in the pushed and thus clamped state. Furthermore, the ultrasonic sensor has an ultrasound transmitter and an ultrasound receiver, the drip chamber being arranged between the ultrasound transmitter and the ultrasound receiver for a transmission method or the drip chamber between either the juxtaposed ultrasound transmitter and ultrasound receiver or a combination of ultrasound transmitter and ultrasound receiver and a reflector for ultrasound waves for a reflection sound method , The presence of the component in the drip chamber is thus easily and reliably detectable. At the same time, the occurrence of air bubbles is advantageously detected, so that when they occur, the production of the mixed solution can be stopped. This makes mixing solutions without air bubbles easy and safe to deploy.

The rotor of a stepping motor as a drive is coupled via the threaded spindle and the moving nut on the threaded spindle with the piston of the syringe of the syringe pump. Thus, in particular, large torques can be transmitted so that the piston of the syringe of the syringe pump can be moved securely and with exact position.

The second module has means for measuring the distance between at least one fixed point and the movement nuts. The devices for distance measurement are further interconnected with the control device, so that the positions of the pistons of the syringes of the syringe pumps and thus the volume of the components to be delivered by the syringe pumps can be determined. The components can be supplied to the container in exact quantities.

Advantageous embodiments of the invention are specified in the claims 2 to 7.

The inner wall is formed conically according to the embodiment of claim 2 of the holding element. In conjunction with the existing of an elastic material drip chamber so that advantageously the holding element can be fixed without spacing on the drip chamber. The holding element clamps releasably on the drip chamber. When changing the container with the associated drip chamber, the holding element is easy to remove and easy to place on the new drip chamber.

On at least a portion of the cylindrical cavity of the syringe of the syringe pump for the component according to the embodiment of claim 3, an ultrasonic sensor is arranged. The ultrasonic sensors of the syringes of the syringe pumps are further interconnected with the control device, so that the presence of the components in the syringes of the syringe pumps can be detected. The same applies to the occurrence of air bubbles during the filling of the container, so that bubble-free mixing solutions can be provided.

The second module has according to the embodiment of claim 4, two connectors on, so that the second module is electrically conductively connected to the control device and electrically conductively connectable with at least one further second module, wherein the electrical lines are at least data lines. Thus, the second modules can be operated easily or in combinations. Of course, the electrical wires can also be data and power lines.

The second modules are according to the embodiment of claim 5 advantageously via connectors in a series circuit for electrical energy and data electrically connected to each other. This can in particular be done with a cable with multiple conductors, so that the modular device is easy to implement and at the same time easily supplemented with other second modules.

According to the embodiment of claim 6, the second module has a releasable holder for a container accommodating the mixed solution.

The control device as a third module, according to the embodiment of claim 7, a data processing system with at least one data input device, a screen and at least one interface. Data and software components can be transmitted to the data processing system via the interface, in particular as a data interface. The control device can thus advantageously be programmed individually and user-related.

An embodiment of the invention is illustrated in principle in the drawings and will be described in more detail below.

Show it:

1 a modular device for providing a multi-component mixed solution,

2 a second module as basic module and

3 a combination with second modules.

• – einem wenigstens einem ersten Modul 1 mit Behältern 3 mit flüssigen Komponenten und damit verbundenen Tropfkammern 4 mit jeweils einem Ultraschallsensor 5,
• – mindestens einem zweiten Modul 2 mit angetriebenen Spritzenpumpen 7 und mit elektrischen Verbindungselementen für Energie- und Datenleitungen für ein vor- und ein nachordenbares weiteres zweites Modul 2 und
• – einem dritten Modul 3 mit einer Steuereinrichtung 3.

A modular means for providing a multi-component blending solution consists essentially of

• - At least one first module 1 with containers 3 with liquid components and associated drip chambers 4 each with an ultrasonic sensor 5 .
• - at least one second module 2 with powered syringe pumps 7 and with electrical connection elements for power and data lines for a pre-and a nachordenbares another second module 2 and
• - a third module 3 with a control device 3 ,

The 1 shows a modular means for providing a multi-component mixing solution in a schematic representation.

In the first module is a container 6 with a liquid component with a drip chamber 4 connected. Each of the drip chambers 4 has an ultrasonic sensor detecting the presence of liquid 5 on. This is located in a ring-shaped or U-shaped holding element, so that the holding element on the drip chamber 4 is deferrable and is fixed in the deferred and thus clamped state. The inner wall of the retaining element is conical. The ultrasonic sensor 5 has a ultrasonic transmitter and an ultrasonic receiver, wherein the drip chamber 4 between the ultrasonic transmitter and the ultrasonic receiver for a transmission method or the drip chamber 4 is arranged between either the juxtaposed ultrasonic transmitter and ultrasonic receiver or a combination of ultrasonic transmitter and ultrasonic receiver and a reflector for ultrasonic waves for a reflection sound method.

The drip chamber 4 is over a valve 8th in the form of a three-way valve 8th with a powered syringe pump 7 of the second module 2 connected. The three-way valve 8th can consist of two coupled check valves, so that a control is not necessary. The construction of a syringe pump 7 as a metering pump is well known. The second module 2 has in this embodiment to preferably four syringe pumps.

The 2 shows a second module 2 as a basic module 2 in a schematic representation.

In the 2 are the holders for the syringe pumps 7 shown.

The piston of each of the syringe pumps 7 is coupled to a drive. For this purpose, the rotor of a known stepping motor as a drive via a threaded spindle and a moving nut on the threaded spindle with the piston of the syringe of the syringe pump 7 coupled. Furthermore, the second module has 2 Means for measuring the distance between at least one fixed point and the movement nuts. Furthermore, this second module 2 as basic module 2 a power supply for powering the drives, the distance measuring devices and the control device 3 as the third module 3 exhibit. The power supply can also be a separate device.

The control device 3 as the third module 3 is a known data processing system with at least one data input device and a screen. The screen as a so-called touchscreen may also include the data input device.

The control device 3 is equipped with switches for powering the drives of the syringe pumps 7 , the devices for distance measurement and the ultrasonic sensors 5 connected together. The respective circuit of drive and power supply is closed or opened via the switches. In the context of the distance measuring devices, the positions of the pistons are the syringes of the syringe pumps 7 and with it through the syringe pumps 7 determinable volumes of components determinable.

The syringe pumps 7 are still using known check valves 8th as valves 8th with a container 9 connected for the mixed solution.

Cables as data and / or power cables in connection with connectors on the modules 1 . 2 . 3 ensure the operation of the device.

The 3 shows a combination with second modules 2 in a schematic representation.

The second module 2 as basic module 2a is with another second module 2 connected together. This is done via data and power lines, which connect the drives, the switches and the devices for measuring the distance of the second modules via connectors. The data processing system has a program for automatic detection of these components of the second modules 2 , The second module 2 B can do this with a basic module 2a or a module 2 B without power supply, so that the structure of the other second module 2 B simplified.

In one embodiment of the embodiment, on at least a portion of the cylindrical cavity of the syringe of the syringe pump 7 arranged for the component another ultrasonic sensor, which are interconnected to the control device, so that the presence of the components in the syringes of the syringe pumps 7 is detectable.

Claims (7)

Modular device for providing a multi-component mixed solution comprising a) at least one first module ( 1 ) with containers ( 6 ) with liquid components and associated drip chambers ( 4 ) each having an existence of liquid detecting ultrasonic sensor ( 5 ) in a ring-shaped or U-shaped holding element, wherein - the holding element on the drip chamber ( 4 ) is pushed and is fixed in the deferred and thus clamped state and - the ultrasonic sensor ( 5 ) has an ultrasonic transmitter and an ultrasonic receiver, wherein the drip chamber ( 5 ) between the ultrasonic transmitter and the ultrasonic receiver for a transmission method or the drip chamber ( 5 ) is arranged between either the juxtaposed ultrasonic transmitter and ultrasonic receiver or a combination of ultrasonic transmitter and ultrasonic receiver and a reflector for ultrasonic waves for a reflection sound method, b) at least one second module ( 2 ) with - electrical connection elements for power and data lines for a pre- and a reorderable further second module ( 2 ), - driven syringe pumps ( 7 ), wherein the rotor of a stepping motor as a drive via a threaded spindle and a moving nut on the threaded spindle with the piston of the syringe of the syringe pump ( 7 ), and - means for measuring the distance between at least one fixed point and the movement nuts for determining the positions of the pistons of the syringes of the syringe pumps ( 7 ) and thus by the syringe pumps ( 7 ) volumes of components to be delivered and c) a third module ( 3 ) with a control device, wherein in each case a container ( 6 ) via at least one valve ( 8th ) with a syringe pump ( 7 ) and the respective syringe pump ( 7 ) over the valve ( 8th ) with a container ( 9 ) are connected via the hose lines for the mixed solution and the drives of the syringe pumps ( 7 ), the distance measuring devices and the ultrasonic sensors ( 5 ) are interconnected with the control device. Device according to claim 1, characterized in that the inner wall of the holding element is conical. Device according to claim 1, characterized in that on at least a portion of the cylindrical cavity of the syringe of the syringe pump ( 7 ) for the component an ultrasonic sensor ( 5 ) and that the ultrasonic sensors ( 5 ) the syringes of the syringe pumps ( 7 ) are interconnected with the control device so that the presence of the components in the syringes of the syringe pumps ( 7 ) is detectable. Device according to claim 1, characterized in that the second module ( 2 ) has two connectors, so that the second module ( 2 ) electrically conductively connected to the control device and with at least one further second module ( 2 ) is electrically conductively connected, wherein the electrical lines are at least data lines. Device according to claim 1 or 4, characterized in that the second modules ( 2 ) are electrically connected to each other via connectors in a series circuit for electrical energy and data. Device according to claim 1, characterized in that the second module ( 2 ) a releasable holder for a mixed solution receiving container ( 9 ) having. Device according to claim 1, characterized in that the control device ( 3 ) as the third module ( 3 ) has a data processing system with at least one data input device, a screen and at least one interface.

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