Syringe pump system and method for determining at least one parameter in a syringe pump system

Abstract

A syringe pump system (2) comprises a syringe (4) with a syringe sleeve (6) and a syringe plunger (8) movable in the syringe sleeve (6), wherein the syringe sleeve (6) has an opening (71) for receiving and dispensing a fluid; a changeover valve (40) fluidically connected to the opening (71) in the syringe sleeve (6); and a syringe pump body (16) configured to support the syringe (4) and the changeover valve (40); wherein the syringe pump body (16) has at least one actuator (20, 22) configured to actuate the syringe plunger (8) and / or the changeover valve (40). The changeover valve (40) has a changeover valve data memory (52) in which changeover valve data is stored. The syringe pump body (16) includes a processor (26) which is designed to read the switching valve data from the switching valve data memory (52).At least one interface (54, 58) is provided between the syringe pump body (16) and the changeover valve (40), which makes it possible to transfer the changeover valve data from the changeover valve data memory (52) to the processor (26) in the syringe pump body (16).

Description

[0001] The invention relates to a syringe pump system with a switching valve and a method for determining at least one parameter of a switching valve in a syringe pump system.

[0002] Syringe pump systems are used in both medical and laboratory settings to pump fluids with high precision in the amount of fluid pumped.

[0003] Syringe pump systems comprise a syringe with a syringe sleeve and a syringe plunger movable within the syringe sleeve. The syringe sleeve has at least one opening for receiving and dispensing a fluid. Syringe pump systems may further comprise a changeover valve fluidically connected to the opening of the syringe sleeve. The fluid is preferably delivered by moving the syringe plunger within the syringe sleeve and appropriately actuating the changeover valve.

[0004] The diverter valve and / or syringe can be interchangeable to flexibly adapt the syringe pump system to different requirements. For example, syringes with different volumes and / or diverter valves with a different number of fluid connections can be used.

[0005] It is an object of the invention to simplify the handling of a syringe pump system which has an interchangeable switching valve and / or an interchangeable syringe and to reduce the risk of incorrect operation of the syringe pump system.

[0006] A syringe pump system according to the invention comprises: a syringe with a syringe sleeve and a syringe plunger movable within the syringe sleeve, the syringe sleeve having an opening for receiving and dispensing a fluid; a changeover valve fluidically connected to the opening of the syringe sleeve; and a syringe pump body configured to support the syringe and the changeover valve. The syringe pump body includes at least one actuator configured to drive the syringe plunger and / or the changeover valve. The changeover valve has a changeover valve data memory in which changeover valve data is stored. The syringe pump body includes a processor configured to read the changeover valve data from the changeover valve data memory.An interface is provided between the syringe pump body and the changeover valve, which makes it possible to transfer the changeover valve data from the changeover valve data memory to the processor in the syringe pump body.

[0007] The invention also includes a method for determining at least one parameter of a changeover valve in a syringe pump system. In addition to the changeover valve, the system comprises a syringe with a syringe sleeve and a syringe plunger movable within the syringe sleeve, as well as a syringe pump body configured to support and drive the syringe and the changeover valve. The syringe sleeve has an opening fluidically connected to the changeover valve for receiving and dispensing a fluid. The changeover valve includes a changeover valve data memory in which changeover valve data is stored. The method comprises reading changeover valve data from the changeover valve data memory and transferring it to a processor provided in the syringe pump body via an interface formed between the changeover valve and the syringe pump body.

[0008] A syringe pump system and a method according to the invention enable the processor provided in the syringe pump body to read data from the changeover valve's data memory and take this data into account when controlling the syringe pump system. The control of the syringe pump system can thus be easily and reliably adapted to different changeover valves with varying operating parameters. In this way, the operational reliability of the syringe pump system can be improved. In particular, human error that can occur when manually entering changeover valve data can be avoided. Furthermore, the handling of the syringe pump system can be simplified, since manual entry of the changeover valve data is no longer necessary.

[0009] In one embodiment, the changeover valve is detachably attached to the syringe pump body, allowing for quick and easy replacement. This enables the syringe pump system to be easily and rapidly adapted to different requirements. For example, changeover valves with varying numbers of fluid ports can be attached to the syringe pump body as needed.

[0010] The switching valve can be detachably connected to the syringe pump body, for example, by a bayonet connection or a screw connection.

[0011] In one embodiment, the syringe is detachably attached to the syringe pump body and detachably connected to the changeover valve, allowing for quick and easy replacement. This enables the syringe pump system to be easily and quickly adapted to different requirements. In particular, syringes with varying volumes can be attached to the syringe pump body and connected to the changeover valve as needed to adjust the delivery rate of the syringe pump system to the specific requirements.

[0012] In one embodiment, the interface is part of a BUS system, in particular a serial BUS system, configured to transmit data from the changeover valve data memory to the processor in the syringe pump body. A BUS system enables fast and reliable data transmission from the changeover valve data memory to the processor in the syringe pump body. With a serial BUS system, data can be transmitted over a single data line. Such a data line can consist of one or more electrical wires or cables. The interface can thus be implemented very cost-effectively with few electrical contacts. Other data, such as data from the syringe and / or data from sensors attached to the changeover valve and / or the syringe, can also be transmitted to the processor via the BUS system.

[0013] In one embodiment, the changeover valve data includes operating parameters of the changeover valve. In particular, the changeover valve data may include at least one of the following parameters: the maximum flow rate of the changeover valve; the recommended flow rate of the changeover valve; the maximum permissible pressure at the changeover valve; the number of fluid ports of the changeover valve; an indication of whether a pressure sensor is connected to the changeover valve; an indication of whether a bubble sensor is present; the number of switching operations already performed by the changeover valve; and the switching speed of the changeover valve. Using at least one of these parameters, the processor can optimally adapt the operation of the syringe pump system to the changeover valve being used.

[0014] In one embodiment, the changeover valve data includes a changeover valve identifier. This identifier makes it possible, in particular, to determine the operating parameters of the changeover valve. For example, it allows the operating parameters of the changeover valve to be read from a database in which these parameters are stored. The database can be part of the syringe pump system, specifically within the syringe pump body. Alternatively, the database can be located on an external computer, intended for controlling the syringe pump system but not part of the system itself. It is also possible to access an external database containing the operating parameters of the changeover valve, for example, via the internet or another data connection, using the changeover valve identifier.

[0015] The changeover valve identifier may, in particular, include at least one of the type number, a serial number and a part number of the changeover valve.

[0016] In one embodiment, the interface for wireless data transmission between the switching valve and the processor in the syringe pump body is designed. The interface can, for example, be configured to wirelessly transmit the data from the switching valve to the processor in the syringe pump body via a WLAN connection or a Bluetooth connection.

[0017] Wireless data transmission is user-friendly and particularly reliable in humid environments.

[0018] In one embodiment, the interface is configured to transmit data from the switching valve to the processor in the syringe pump body via an electrical interface comprising at least one electrical contact. An electrical interface with one or more electrical contacts is cost-effective and easy to implement.

[0019] The electrical interface can have one, two, three, or more than three electrical contacts. If the changeover valve and the syringe pump body are made of an electrically conductive material, particularly metal, the mechanical connection between the changeover valve and the syringe pump body can also serve as an electrical ground connection. In this case, a single additional electrical contact may be sufficient to transmit data from the changeover valve to the processor in the syringe pump body.

[0020] An additional electrical contact, serving as an electrical ground connection, may improve the quality and reliability of data transmission.

[0021] Additional electrical contacts may be provided for power supply and / or data transmission from sensors, for example pressure sensors, that are provided on the switching valve.

[0022] In one embodiment, the electrical interface has at least one electrical contact pin, in particular two or three electrical contact pins, and at least one, in particular two or three, corresponding electrical contact surfaces. The at least one electrical contact pin can be elastically or resiliently designed so that it is pressed against a corresponding electrical contact surface by an elastic or resilient force. In this way, a particularly reliable electrical connection can be created between the at least one electrical contact pin and the corresponding electrical contact surface.

[0023] In one embodiment, the at least one electrical contact pin is formed on the syringe pump body and the at least one electrical contact surface is formed on the switching valve.

[0024] In one embodiment, the at least one electrical contact pin is formed on the switching valve and the at least one electrical contact surface is formed on the syringe pump body.

[0025] In one embodiment, at least one electrical contact pin is formed on the switching valve and at least one electrical contact pin is formed on the syringe pump body. Correspondingly, at least one corresponding electrical contact surface is formed on the syringe pump body and on the switching valve.

[0026] In one embodiment, the switching valve has a housing with a stationary area relative to the syringe pump body, and the switching valve data memory is arranged in the stationary area of ​​the switching valve data memory.

[0027] In one embodiment, the changeover valve is a rotary valve that has an internal rotating body which can be rotated relative to the stationary area in order to switch the valve between different switching states. Such rotary valves have proven to be particularly well suited for use in syringe pump systems.

[0028] In one embodiment, the syringe has a syringe data memory in which syringe data is stored. The syringe can also have an interface that allows the syringe data to be transferred from the syringe data memory to the processor in the syringe pump body.

[0029] A syringe data storage system, in which syringe data is stored, allows the operation of the syringe pump system to be adapted particularly easily and reliably to syringe parameters contained in the syringe data.

[0030] In one embodiment, the interface on the syringe is designed for wireless data transmission, for example via a WLAN connection or a Bluetooth connection.

[0031] In one embodiment, the interface on the syringe is designed as an electrical interface comprising at least one electrical contact. An electrical interface comprising at least one electrical contact is particularly simple and cost-effective to implement.

[0032] In one embodiment, the switching valve has a syringe interface for connection to the interface on the syringe. The switching valve also has a switching valve interface that is electrically connected to the syringe interface and is configured to forward data received via the syringe interface to the processor in the syringe pump body.

[0033] The invention also comprises a syringe pump system with a syringe comprising a syringe sleeve and a syringe plunger movable within the syringe sleeve, the syringe sleeve having an opening for receiving and dispensing a fluid; a changeover valve fluidically connected to the opening of the syringe sleeve; and a syringe pump body configured to support the syringe and the changeover valve. The syringe pump body has at least one drive configured to actuate the syringe plunger and / or the changeover valve. A processor is provided in the syringe pump body, configured to read the syringe data from the syringe data memory. The syringe has an electrical syringe data memory in which syringe data is stored and an interface that enables the transfer of syringe data from the syringe data memory to the processor in the syringe pump body.The changeover valve has a syringe interface for connection to the interface on the syringe and a changeover valve interface which is electrically connected to the syringe interface and is designed to transmit data received at the syringe interface to the processor in the syringe pump body.

[0034] The invention further comprises a method for determining at least one parameter of a syringe in a syringe pump system, wherein the syringe has a syringe sleeve and a syringe plunger movable in the syringe sleeve, as well as an opening for receiving and dispensing a fluid, wherein the syringe pump system, in addition to the syringe, has a changeover valve fluidically connected to the opening of the syringe; and a syringe pump body configured to support and drive the syringe and the changeover valve, and wherein the syringe has an electrical syringe data storage device in which syringe data is stored.The method comprises detecting the existence of a syringe on the syringe pump body via a syringe interface formed between the syringe and the changeover valve, and a changeover valve interface formed between the changeover valve and the syringe pump body, reading syringe data from the syringe data memory, and transferring the syringe data to a processor provided in the syringe pump body.

[0035] In this way, syringe pump data stored in the syringe data memory can be transferred to the processor in the syringe pump body via the switching valve. This eliminates the need for an additional interface between the syringe and the syringe pump body. A syringe pump system according to the invention, which enables data to be read from a syringe data memory, can thus be implemented particularly simply and cost-effectively.

[0036] The syringe interface and the changeover valve interface can be part of a BUS system, in particular a serial BUS system, configured to transmit data from the syringe data storage through the changeover valve to the processor in the syringe pump body. The syringe pump system can have a single BUS system through which changeover valve data, data from the syringe data storage, and data from other sensors, if present, can be transmitted to the processor.

[0037] In one embodiment, the interface on the syringe is formed on the syringe sleeve proximal to the opening of the syringe sleeve. In this way, the interface formed on the syringe can be particularly well connected to a corresponding interface formed on the changeover valve when the changeover valve is attached to the syringe, since it is a stationary component that, unlike the syringe plunger, does not move.

[0038] In one embodiment, the syringe pump data storage device is arranged proximal to the opening of the syringe sleeve within the syringe sleeve. In this way, the syringe pump data storage device is located near the interface on the syringe and can be connected to the interface on the syringe via short connecting cables.

[0039] In one embodiment, the interface on the syringe is located on the side of the syringe facing the changeover valve when the syringe is connected to the changeover valve. This allows the interface on the syringe to connect particularly well with the corresponding syringe interface on the changeover valve.

[0040] In one embodiment, the syringe interface formed on the switching valve has at least one contact pin designed to contact the contact surfaces of the interface on the syringe. The syringe interface can have at least two, and in particular at least three, contact pins.

[0041] The interface formed on the syringe has at least one, in particular two or three, contact surfaces.

[0042] In a complementary embodiment, the interface on the syringe has at least one contact pin designed to contact contact surfaces of the syringe interface. The interface on the syringe can, in particular, have at least two, and in particular at least three, contact pins.

[0043] The syringe interface formed on the switching valve has at least one, in particular two or three, contact surfaces.

[0044] In one embodiment, the interface on the syringe has curved contact surfaces, in particular contact surfaces that are approximately annular. "Curved" or "annular" here refers specifically to a longitudinal axis of the syringe. Alternatively, other radially symmetrical contact surfaces can also be formed on the syringe. Curved contact surfaces, especially those that are approximately annular, make it possible to reliably contact the surfaces regardless of the orientation of the syringe about its longitudinal axis. In this way, the operation of the syringe pump system can be simplified, since it is not necessary to consider the orientation of the syringe about its longitudinal axis when attaching it to the syringe pump body. Rather, the syringe can be attached to the syringe pump body in any orientation about its longitudinal axis without impairing the functionality of the syringe pump system.

[0045] In one embodiment, a positioning and locking device is provided on the changeover valve and / or on the syringe, which is designed to fix the syringe to the changeover valve in the assembled state such that the electrical contacts formed on the changeover valve are in electrical contact with the electrical contacts formed on the syringe. In this way, reliable electrical contact between the changeover valve and the syringe can be achieved.

[0046] In one embodiment, the syringe data includes operating parameters of the syringe. In particular, the syringe data can include at least one of the following operating parameters: the maximum flow rate of the syringe; the recommended flow rate of the syringe; the maximum permissible pressure in the syringe; the volume of the syringe; the recommended read / write speed of any memory located in the syringe; and the number of pumping cycles already performed by the syringe. Using at least one of these parameters, the operation of the syringe pump system can be adapted to the syringe currently used in the system. This allows the syringe pump system to be operated with particular reliability and efficiency.

[0047] In one embodiment, the syringe data includes a syringe identifier. This identifier allows for the determination of the syringe's operating parameters. For example, operating parameters can be retrieved from a database using the syringe identifier. The syringe identifier can, for example, include at least one type number, one serial number, and one part number of the syringe.

[0048] The database can be integrated into the syringe pump system, specifically within the syringe pump body. Alternatively, the database can reside on an external computer dedicated to controlling the syringe pump system, but not part of the system itself. It is also possible to access an external database containing the syringe's operating parameters, for example, via the internet or another data connection, using the syringe's identifier.

[0049] The operating parameters of the syringe and the operating parameters of the changeover valve can be stored in a common database or in separate databases.

[0050] In one embodiment, the syringe pump system comprises a user interface designed and configured to display at least one of the switching valve data and / or syringe data. The user interface can, in particular, be located on or within the syringe pump body. The user interface can also be connected to the syringe pump body via a suitable interface. Such a user interface can facilitate the operation of the syringe pump system.

[0051] In one embodiment, the user interface also includes an input device that allows data and / or commands to be entered for controlling the syringe pump system.

[0052] The user interface may include, for example, a keyboard with one or more keys, a touchscreen and / or another type of display and / or input device.

[0053] In one embodiment, the switching valve has a syringe fluid port that can be fluidically connected to the opening of the syringe sleeve, and at least two fluid line ports. The switching valve can be switched between several switching states, with one of the fluid line ports being in fluid communication with the syringe fluid port in each of the switching states.

[0054] In one embodiment, the changeover valve includes a pressure sensor fluid port configured for connecting a pressure sensor that enables measurement of the fluid pressure within the changeover valve. The changeover valve may also have a pressure sensor interface that allows measurement data provided by the pressure sensor to be transmitted via the changeover valve to the processor in the syringe pump body.

[0055] In one embodiment, the syringe pump system includes a pressure sensor connected to the pressure sensor fluid port. The pressure sensor can be configured, in particular, to transmit measurement data to the processor in the syringe pump body via a pressure sensor interface provided on the changeover valve. In an alternative embodiment, the pressure sensor can also have a direct data connection to the processor of the syringe pump body, either via an electrical or wireless interface.

[0056] In one embodiment, the syringe pump system comprises at least one bubble sensor configured to detect bubbles in a fluid line connected to one of the fluid ports of the changeover valve. The at least one bubble sensor can be configured to communicate with the processor provided in the syringe pump body to transmit measurement data to the processor. This enables the processor to adjust the operation of the syringe pump system when bubbles are detected in one of the fluid lines by the at least one bubble sensor.

[0057] In one embodiment, the switching valve has a bubble sensor interface that allows data to be transmitted from the bubble sensor to the processor in the syringe pump body via the bubble sensor interface provided on the switching valve. This enables particularly simple and efficient data transmission from the bubble sensor to the processor in the syringe pump body. In an alternative embodiment, the bubble sensor can also have a direct data connection to the processor in the syringe pump body, either via an electrical or wireless interface.

[0058] In one embodiment, a memory for storing the data read from the switching valve data memory and / or the syringe data memory is provided in the syringe pump body.

[0059] In one embodiment, the syringe pump system has a data interface, for example a USB interface, configured to exchange data between the processor in the syringe pump body and a higher-level instance, for example an external computer configured to control the syringe pump system. This enables the syringe pump system to be controlled by an external, higher-level instance, such as a computer. The data interface can, in particular, be located on the syringe pump body.

[0060] In one embodiment, the syringe pump system has a syringe piston drive configured to drive the syringe piston and a changeover valve drive configured to drive the changeover valve. In this way, the syringe piston and the changeover valve can be driven independently of each other. The syringe piston drive and the changeover valve drive can, in particular, be arranged within the syringe pump body, with both being controllable by the processor of the syringe pump body.

[0061] In one embodiment, the syringe pump system has a common drive designed to actuate both the syringe plunger and the diverter valve. The common drive can also be located within the syringe pump body.

[0062] Each drive can include an electric motor, especially an electric stepper motor.

[0063] In the following, an exemplary embodiment of a syringe pump system designed according to the invention is described with reference to the accompanying figures.

[0064] In one embodiment, the syringe and / or the switching valve have a heater for heating the fluid.

[0065] In one embodiment, the syringe sleeve has a heater, for example in the form of a heating element, which makes it possible to heat the fluid in the syringe to a predetermined temperature. In one embodiment, the heater is controlled by the processor of the syringe pump body.

[0066] In one embodiment, the syringe sleeve additionally has a temperature sensor which is designed and adapted to measure the temperature of the fluid in the syringe and to transmit the determined value to the processor of the syringe pump body via an interface.

[0067] In one embodiment, the data storage devices are arranged within the housing of the switching valve and the syringe. This provides mechanical protection, safeguarding the data storage devices from, for example, splashing water and the like.

[0068] The optional features of a syringe pump system according to the invention described above can be implemented individually or in any combination in a syringe pump system, provided that they are not mutually exclusive alternative features. Fig. Figure 1A shows a perspective view of a syringe pump system designed according to an embodiment of the invention. Fig. Figure 1B shows a front view of a syringe pump system designed according to an embodiment of the invention. Fig. 1C shows a rear view of the [unclear] in the Fig. Syringe pump system shown in 1B. Fig. Figure 2 shows a perspective view of a switching valve according to the invention. Fig. Figure 3 shows a schematic front view of a connection area of ​​the syringe pump body of a syringe pump system according to the invention. Fig. Figure 4 shows how the changeover valve can be connected to the syringe pump body and to the syringe. Fig. Figure 5 shows an enlarged sectional view of the electrical connection between a switching valve and a syringe pump body according to an embodiment of the invention. Fig. Figure 6 shows a connection area of ​​a syringe according to an embodiment of the invention. Fig. Figure 7 shows a perspective view of an electrical connection between the switching valve and the syringe according to an embodiment of the invention. Fig. Figure 8 shows a sectional view of an electrical connection between the switching valve and the syringe according to an embodiment of the invention.

[0069] Fig. Figure 1A shows a perspective view of a syringe pump system 2, which is designed according to an embodiment of the invention.

[0070] Fig. Figure 1B shows a front view of a syringe pump system 2 according to the invention, and Fig. 1C shows a rear view of the [unclear] in the Fig. 1B syringe pump system shown 2.

[0071] The in the Fig. Syringe pump systems 2 shown in 1A to 1C each comprise a syringe 4 with a syringe sleeve 6 and a syringe plunger 8 movable in the syringe sleeve 6. At one of the illustrations, the Fig. 1A to 1C at the upper end of the syringe sleeve 6 is an opening 71 (see Fig. 6) designed to allow fluid to be taken into the syringe sleeve 6 and fluid to be dispensed from the syringe sleeve 6.

[0072] The upper end of the syringe sleeve 6 with the opening 71 is connected to a changeover valve 40. The changeover valve 40 allows the opening 71 in the syringe sleeve 6 to be selectively connected fluidically to one of several fluid ports 48a, 48b of the changeover valve 40. In the Fig. In the embodiment shown in Figures 1A to 1C, the switching valve 40 has two fluid ports 48a, 48b. In alternative embodiments not shown in the figures, the switching valve 40 can also have more than two fluid ports 48a, 48b.

[0073] In the Fig. In the embodiment shown in 1A to 1C, the switching valve 40 is designed as a rotary valve. The switching valve 40 has a [missing information] in the Fig. 1A to 1C visible stationary changeover valve housing, on which the fluid connections 48a, 48b are formed. The stationary changeover valve housing contains a [missing information - likely a specific component or element]. Fig. 1A to 1C non-visible, rotating body which is rotatable about an axis between several switching positions in order to selectively connect one of the fluid connections 48a, 48b fluidically to the opening 71 of the syringe sleeve 6.

[0074] Fluid lines 14a, 14b are attached to the fluid connections 48a, 48b, through which fluid can be supplied to the syringe 4 in a suction stroke and fluid can be discharged from the syringe 4 in a discharge stroke.

[0075] For this purpose, one of the fluid lines 14a, 14b is connected to a line in the Fig. 1 fluid source not shown, and the other of the fluid lines 14a, 14b is connected to one in the Fig. 1A to 1C are also connected to the fluid conveying objective, which is not shown. The fluid source and / or the target of the fluid source can be, in particular, vessels.

[0076] The syringe 4 and the changeover valve 40 are attached to a syringe pump body 16. The syringe 4 and / or the changeover valve 40 are attached to the syringe pump body 16 in such a way that they can be easily detached from the syringe pump body 16 and thus replaced.

[0077] The syringe pump system 2 also includes a movable syringe piston actuator 18, which protrudes from the syringe pump body 16 below the syringe 4 and is connected to the syringe piston 8 of the syringe 4.

[0078] The syringe pump body 16 contains a syringe piston drive 20, which is designed to drive the syringe piston actuator 18 in order to move the syringe piston 8 of the syringe 4 selectively upwards and downwards, so that the syringe piston 8 performs a pumping movement in the syringe sleeve 6.

[0079] The syringe pump body 16 also contains a changeover valve actuator 22, which is designed to rotate the rotating body of the changeover valve 40 in order to selectively connect one of the fluid ports 48a, 48b of the changeover valve 40 fluidically with the opening 71 of the syringe sleeve 6.

[0080] The syringe piston drive 20 and the switching valve drive 22 can each include an electric motor, in particular a stepper motor.

[0081] The syringe pump body 16 also includes a control unit 24, in particular control electronics, which is configured to control the operation of the syringe pump system 2 and, in particular, to control the syringe piston drive 20 and the changeover valve drive 22. The control unit 24 can, in particular, comprise a processor 26 and a data memory 28, wherein the data memory 28 is connected to the processor 26 in such a way that data can be stored from the processor 26 into the data memory 28 and read out of the data memory 28.

[0082] The control unit 24 can be used in the Fig. 1C visible data interface 94a, 94b, for example a USB interface 94a, which makes it possible to exchange data and / or control commands between the controller 24 in the syringe pump body 16 and a higher instance, for example a computer designed to control the syringe pump system.

[0083] Alternatively or additionally, the controller 24 can have a radio interface that makes it possible to exchange data and / or control commands wirelessly, for example via a WLAN or Bluetooth connection, between the controller 24 in the syringe pump body 16 and a higher-level instance, for example a computer designed to control the syringe pump system.

[0084] On the in the Fig. On the reverse side of the syringe pump body 16 shown in Figure 1C, in addition to the data interfaces 94a, 94b, an electrical connection 96 for power supply and an indicator light 98 are also provided.

[0085] Optionally, the syringe pump system 2 can include its own user interface 99, which is designed and configured to display changeover valve data and / or syringe data and / or to receive inputs for controlling the syringe pump system 2. The user interface 99 can, for example, include a display device, a keypad with one or more buttons, a touchscreen, and / or another type of input device. Optionally, the user interface can also be located on or attached to the changeover valve 40.

[0086] The in the Fig. 1B and Fig. The embodiment of a syringe pump system 2 shown in Figure 1C is furthermore equipped with a pressure sensor 90 and with two bubble sensors 92a, 92b.

[0087] The pressure sensor 90 is attached to a pressure sensor fluid port 48c of the changeover valve 40 and is designed to measure the fluid pressure in the changeover valve 40. The pressure sensor 90 is connected to the control unit 24 in the syringe pump body 16 via a pressure sensor line 91 in order to transmit the pressure readings measured by the pressure sensor 90 to the control unit 24.

[0088] In an alternative embodiment, electrical contacts can be provided on the pressure sensor 90 and on the switching valve 40, which make it possible to transmit the pressure measured values ​​from the pressure sensor 90 to the control unit 24 in the syringe pump body 16 via the switching valve 40.

[0089] In one embodiment, the pressure sensor 90 and the control unit 24 can be configured to wirelessly transmit the pressure measurements taken by the pressure sensor 90 to the control unit 24 in the syringe pump body 16, for example via a WLAN or Bluetooth connection.

[0090] One of the bubble sensors 92a, 92b is attached to each of the two fluid lines 14a, 14b to detect bubbles in the fluid flowing through the respective fluid line 14a, 14b. The bubble sensors 92a, 92b are connected electrically or via a radio connection, for example via a WLAN or Bluetooth connection, to the controller 24 in the syringe pump body 16 in order to transmit the measured values ​​determined by the bubble sensors 92a, 92b to the controller 24 in the syringe pump body 16.

[0091] The pressure sensor 90 and the bubble sensors 92a, 92b are optional and not necessarily part of a syringe pump system 2 according to the invention. In the Fig. In the embodiment shown in 1A, there is no pressure sensor 90 and no bubble sensors 92a, 92b.

[0092] Fig. Figure 2 shows a perspective view of a switching valve 40, which is designed according to an embodiment of the invention.

[0093] The changeover valve 40 has a changeover valve housing 42, which is rotationally fixed to the (in the) using fastening elements 44. Fig. 2 syringe pump bodies (not shown) 16 can be mounted.

[0094] The switching valve housing 42 has a syringe fluid connection 50 which can be brought into fluid contact with the opening 71 formed in the syringe sleeve 6 in order to create a fluid connection between the switching valve 40 and the syringe 4 when the switching valve 40 and the syringe 4 are attached to the syringe pump body 16 as shown in the Fig. 1A - 1C is shown.

[0095] The changeover valve 40 has a rotatable drive element 46 which is connected to a corresponding coupling element 10 (see Fig. 3), which is formed on or in the syringe pump body 16, is coupled when the switching valve 40 is attached to the syringe pump body 16.

[0096] By rotating the rotatable drive element 46, the rotating body in the changeover valve 40 can be rotated to selectively connect one of the fluid ports 48a, 48b of the changeover valve 40 fluidically to the opening 71 of the syringe sleeve 6. The rotating body is located in the Fig. 2 is not visible because it is located inside the switching valve housing 42.

[0097] The changeover valve 40 also contains a changeover valve data memory 52, in which changeover valve data is stored. The changeover valve data memory 52 can, for example, comprise an EEPROM.

[0098] The changeover valve data stored in the changeover valve data memory 52 can contain operating parameters of the changeover valve 40. In particular, the changeover valve data can include at least one of the following parameters: the maximum flow rate of the changeover valve 40; the recommended flow rate of the changeover valve 40; the maximum permissible pressure at the changeover valve 40; the number of fluid connections of the changeover valve 40; an indication of whether a pressure sensor 90 is connected to the changeover valve; an indication of whether a bubble sensor 92a, 92b is present; the number of switching operations that the changeover valve 40 has already performed; the switching speed of the changeover valve 40.

[0099] The changeover valve data stored in the changeover valve data memory 52 can also include a changeover valve identifier for the changeover valve 40. The changeover valve identifier can, in particular, make it possible to determine operating parameters of the changeover valve 40 based on the changeover valve identifier. In one embodiment, the changeover valve identifier can, for example, make it possible to read operating parameters of the changeover valve 40 from a database. The database can be designed as part of the syringe pump system 2 within the syringe pump body 16 or separately from the syringe pump system 2. The changeover valve identifier can, for example, contain at least one type number, one serial number, and one part number of the changeover valve.

[0100] On one side of the changeover valve housing 42, which faces the syringe pump body 16 when the changeover valve housing 42 is attached to the syringe pump body 16, an interface 54 is provided which makes it possible to transfer the changeover valve data from the changeover valve data memory 52 to the controller 24 in the syringe pump body 16, in particular to the processor 26 of the controller 24.

[0101] In the embodiment shown in the figures, the interface 54 is configured as an electrical interface 54 with electrical contacts 54a-54c. In alternative embodiments, the interface 54 can also be configured for wireless data transmission, for example via WLAN or Bluetooth.

[0102] In the illustrated embodiment, the electrical interface 54 comprises three electrical contacts 54a-54c. In alternative embodiments, the electrical interface 54 can also have more or fewer than three electrical contacts 54a-54c. In particular, the electrical interface 54 can have only a single electrical contact 54a-54c, especially if the switching valve housing 42 and the syringe pump body 16 are electrically conductive, for example made of metal, and the mechanical connection between the switching valve housing 42 and the syringe pump body 16 can thus also serve as an electrical ground connection.

[0103] The electrical interface 54 can be part of a BUS system, in particular a serial BUS system, wherein the BUS system is configured to transmit switching valve data from the switching valve data memory 52 to the control 24, in particular to the processor 26, in the syringe pump body 16.

[0104] At least one of the electrical contacts 54a-54c can be provided to supply electrical energy to a sensor, for example a pressure sensor 90, which is attached to the switching valve 40.

[0105] On one side of the changeover valve housing 42, which faces the syringe 4 when the changeover valve 40 is attached to the syringe 4, a syringe interface 56 is provided, which makes it possible to retrieve data from a syringe data storage device 78 (see Fig. 6), which is provided on or in syringe 4, to be read.

[0106] In the Fig. In the embodiment shown in Figure 2, the syringe interface 56 has two electrical contacts 56a, 56b, in particular two electrical contact pins 56a, 56b, which are provided and designed to connect to corresponding electrical contacts 74a, 74b of an interface 74 (see Figure 2). Fig. 6), which is trained on syringe 4, to contact.

[0107] At least one of the electrical contacts 56a, 56b of the syringe interface 56 can be electrically connected within the switching valve 40 to at least one of the electrical contacts 54a-54c of the interface 54, which faces the syringe pump body 16, in order to enable the control 24, in particular the processor 26, which is provided in the syringe pump body 16, to read data from the syringe data memory 78 via the switching valve 40.

[0108] Fig. Figure 3 shows a schematic front view of a connection area of ​​the syringe pump body 16, which is designed for mechanical and electrical connection with the switching valve 40.

[0109] In the connection area is a coupling element 10, which is designed for mechanical coupling with the rotatable drive element 46 of the changeover valve 40 when the changeover valve 40 is attached to the syringe pump body 16.

[0110] The coupling element 10 is connected to the changeover valve actuator 22 within the syringe pump body 16, so that the coupling element 10 can be driven by the changeover valve actuator 22 to rotate the coupling element 10 and the rotatable drive element 46 of the changeover valve 40 coupled to it. In this way, the rotating body provided within the changeover valve 40 can be rotated by the changeover valve actuator 22 to switch the changeover valve 40 between different switching states.

[0111] In the vicinity of the coupling element 10, several openings 15 are formed which are intended to receive fastening elements 44 of the changeover valve 40 when the changeover valve 40 is attached to the syringe pump body 16, in order to fix the changeover valve 40 rotationally fixed to the syringe pump body 16.

[0112] In the connection area, an electrical interface 58 with three electrical contacts 58a-58c is also provided, which are intended for contacting the electrical contacts 54a-54c which are provided on the switching valve 40.

[0113] The number of three electrical contacts 58a-58c, which are in the Fig. The figures shown in Figure 3 are only examples. The electrical interface 58 can also have more or fewer than three electrical contacts 58a-58c, as previously described in connection with the electrical interface 54 of the switching valve 40.

[0114] Just as interface 54, which is intended for connection to the syringe pump body 16, interface 58 can also be designed as a radio interface for wireless data transmission.

[0115] Fig. Figure 4 illustrates how the switching valve 40 can be connected to both the syringe pump body 16 and the syringe 4, so that the switching valve 40 is arranged between the syringe pump body 16 and the syringe 4 and creates both a fluidic and electrical connection between the syringe pump body 16 and the syringe 4.

[0116] Fig. Figure 5 shows an enlarged sectional view of the electrical connection between the switching valve 40 and the syringe pump body 16 according to an embodiment of the invention.

[0117] On the right side of the Fig. Figure 5 shows an area of ​​the changeover valve 40 that contains the changeover valve data memory 52. ​​The changeover valve data memory 52 is arranged and mounted on a circuit board 60.

[0118] On the opposite side of the circuit board 60, facing away from the switching valve data storage device 52, an electrical contact 54a is formed, which is electrically connected to the switching valve data storage device 52 inside the circuit board 60. Further electrical contacts 54b, 54c may be formed on the circuit board 60, which are located in the Fig. 5 are not visible in the section view shown.

[0119] In the syringe pump body 16, of which a section on the left side of the Fig. As shown in Figure 5, an electrical contact pin 58a is formed. When the switching valve 40 is attached to the syringe pump body 16, as shown in the Fig. 1A to 1C and the Fig. As shown in Figure 5, the electrical contact pin 58a contacts the electrical contact 54a, which is formed in or on the switching valve 40.

[0120] The electrical contact pin 58a comprises a stationary sleeve 62, which is fixedly mounted in the syringe pump body 16 and is electrically connected to an electrical conductor 64. The electrical conductor 64 connects the electrical contact pin 58a to the controller 24, in particular to the processor 26 of the controller 24.

[0121] A contact element 66 is arranged in the stationary sleeve 62, which contacts the electrical contact 54a formed in the changeover valve 40 when the changeover valve 40 is attached to the syringe pump body 16 as shown in the Fig. 5 is shown.

[0122] The contact element 66 is mounted in the stationary sleeve 62 such that it is movable along the longitudinal direction of the stationary sleeve 62. An elastic or spring element 68, for example a coil spring, is arranged between the contact element 66 and the stationary sleeve 62. The elastic or spring element 68 is designed and configured to press the contact element 66 elastically or resiliently against the electrical contact 54a of the changeover valve 40, as shown in the Fig. Figure 5 shows that this enables a secure electrical connection between the switching valve 40 and the syringe pump body 16.

[0123] The one in Fig. The configuration of the electrical contacts 54a, 58a shown in Figure 5 is only exemplary. The electrical contacts 54a, 58a can also be configured differently. In particular, electrical contact pins 58a-58c can be located on the switching valve 40 and corresponding electrical contact surfaces 54a-54c on the syringe pump body 16.

[0124] Fig. Figure 6 shows a connection area 70 of a syringe 4, which is connected to the changeover valve 40 when the syringe 4 and the changeover valve 40 are attached to the syringe pump body 16, as shown in the Fig. 1 is shown.

[0125] The connection area 70 is formed at one end of the syringe 4 which faces the changeover valve 40 when the changeover valve 40 is connected to the syringe 4.

[0126] The connection area 70 has a central nozzle 72 that can be inserted into the syringe fluid port 50 of the changeover valve 40 to connect the syringe 4 to the changeover valve 40. A central opening 71 is formed in the central nozzle 72, which is in fluid communication with the cavity formed in the syringe sleeve 6 when the changeover valve 40 is connected to the syringe 4. Thus, fluid can flow back and forth between the changeover valve 40 and the cavity bounded by the syringe sleeve 6 through the syringe fluid port 50 and the central opening 71 formed in the nozzle 72 of the syringe 4.

[0127] A ring-shaped collar 76 is formed around the central nozzle 72. On the upper side of the collar 76, facing away from the syringe sleeve 6 and towards the changeover valve 40 when the changeover valve 40 is connected to the syringe 4, two ring-shaped contacts 74a, 74b are formed. The nozzle 72 is formed in the center, specifically at the midpoint, of the ring-shaped contacts 74a, 74b.

[0128] The electrical contacts 74a, 74b are electrically isolated from each other by an insulating ring 73, which is made of an electrically insulating material.

[0129] The electrical contacts 74a, 74b are electrically connected to a syringe data storage device 78, which is provided on or in the syringe 4, in particular on or in the collar 76 of the syringe 4. When the syringe 4 is connected to the changeover valve 40, the electrical contacts 74a, 74b formed on the collar 76 are in contact with the electrical contacts 56a, 56b of the syringe interface 56 formed on the changeover valve 40, as shown in the Fig. 7 is shown.

[0130] This enables the controller 24, in particular the processor 26 of the controller 24, to read syringe data from the syringe data storage 78 via the switching valve 40 and to take it into account when controlling the syringe pump system 2.

[0131] The syringe interface 56 and the contacts 74a, 74b formed on the syringe 4 can be part of a BUS system, in particular a serial BUS system, which is configured to transmit data from the syringe data storage 78 through the switching valve 40 to the control 24, in particular the processor 26, in the syringe pump body 16.

[0132] The syringe pump system 2 can in particular have a single BUS system via which switching valve data, data from the syringe data storage 78 and data from other sensors, if present, can be transmitted to the processor 26.

[0133] The syringe data stored in syringe data memory 78 can include operating parameters of syringe 4. In particular, the syringe data can include at least one of the following operating parameters: maximum flow rate of syringe 4; recommended flow rate of syringe 4; maximum permissible pressure in syringe 4; volume of syringe 4; recommended read / write speed of a memory located in syringe 4; number of pumping operations that syringe 4 has already performed.

[0134] The syringe data stored in the syringe data memory 78 can also include a syringe identifier. The syringe identifier can, in particular, make it possible to determine operating parameters of the syringe 4 based on the syringe identifier, for example, to read operating parameters of the syringe 4 from a database. The database can be configured as part of the syringe pump system 2 within the syringe pump body 16 or separately from the syringe pump system 2. The syringe identifier can, for example, include at least one type number, one serial number, and one part number of the syringe 4.

[0135] If the electrical contacts 74a, 74b on the collar 76 of the syringe 4 are designed as full circles, as shown in the Fig. As shown in Figure 6, the electrical contacts 56a, 56b formed on the switching valve 40 are in contact with the electrical contacts 74a, 74b formed on the syringe 4, regardless of the orientation of the syringe 4 about its longitudinal axis when it is attached to the switching valve 40. In other words, the syringe 4 can be rotated about its longitudinal axis without interrupting the electrical connection between the electrical contacts 56a, 56b formed on the switching valve 40 and the electrical contacts 74a, 74b formed on the syringe 4.

[0136] In alternative embodiments not explicitly shown in the figures, the electrical contacts 74a, 74b on the collar 76 of the syringe 4 can also be configured in a shape other than full circles. For example, the electrical contacts 74a, 74b can be configured as partial circles, in particular as three-quarter circles, semicircles, quarter circles, or eighth circles.

[0137] If the electrical contacts 74a, 74b are not designed as full circles, the syringe 4 is to be connected to the changeover valve 40 in such a way that the electrical contacts 56a, 56b formed on the changeover valve 40 reliably contact the electrical contacts 74a, 74b formed on the syringe 4.

[0138] For this purpose, a positioning and locking device, not shown in the figures, can be provided on the switching valve 40 and / or on the syringe 4, which is intended to ensure that the syringe 4 is aligned in the assembled state so that the electrical contacts 56a, 56b formed on the switching valve 40 are in electrical contact with the electrical contacts 74a, 74b formed on the syringe 4.

[0139] Fig. Figure 8 shows an enlarged sectional view of an electrical connection between the switching valve 40 and the syringe 4 according to an embodiment of the invention.

[0140] In the lower area of ​​the Fig. Figure 8 shows the connection area 70 of a syringe 4 with the central nozzle 72 and the collar 76 surrounding the central nozzle 72.

[0141] The syringe data storage 78 is located in the Fig. In the embodiment shown in Figure 8, the syringe data storage device 78 is arranged within the collar 76. A circuit board 75 is located above the syringe data storage device 78. The ring-shaped electrical contacts 74a, 74b are formed on the side of the circuit board 75 facing away from the syringe data storage device 78.

[0142] The syringe data storage device 78 is connected within the circuit board 75 to the ring-shaped electrical contacts 74a, 74b, so that the syringe data stored in the syringe data storage device 78 can be read out of the syringe data storage device 78 via the electrical contacts 74a, 74b.

[0143] In the upper area of ​​the Fig. Figure 8 shows an area of ​​the switching valve 40 with one of the electrical contacts 56a of the switching valve 40.

[0144] The electrical contact 56a comprises a stationary sleeve 80, which is fixedly mounted in the changeover valve 40 and is electrically connected to an electrical conductor. The electrical conductor connects the electrical contact 74a to one of the electrical contacts 54a-54c, which are formed on the side of the changeover valve 40 facing the syringe pump body 16 (see Fig. 2), so that the syringe data can be read from the syringe data storage 78 via the switching valve 40 and transferred to the control 24, in particular to the processor 26, in the syringe pump body 16.

[0145] A contact element 82 is arranged in the stationary sleeve 80, which contacts the electrical contact 74a formed on the collar 76 of the syringe 4 when the syringe 4 is attached to the changeover valve 40, as shown in the Fig. 8 is shown.

[0146] The contact element 82 is mounted in the stationary sleeve 80 such that it is movable along the longitudinal direction of the stationary sleeve 80. An elastic element 84, for example a coil spring, is located between the contact element 82 and the stationary sleeve 80. The elastic element 84 is designed and configured to press the contact element 82 against the electrical contact 74a formed on the syringe 4, as shown in the Fig. Figure 8 shows that this enables a reliable electrical connection between the electrical contacts 56a, 56b of the changeover valve 40 and the electrical contacts 74a, 74b formed on the syringe 4.

[0147] The in the Fig. 2, Fig. 6, Fig. 7 and Fig.The embodiment of the electrical contacts 56a, 56b, 74a, 74b shown in Figure 8, which electrically connect the changeover valve 40 and the syringe 4, is only exemplary. The electrical contacts 56a, 56b, 74a, 74b can also be configured differently than shown in the figures. In particular, in alternative embodiments, electrical contact pins 56a, 56b can be formed on the syringe 4, and corresponding electrical contact surfaces 74a, 74b, which are provided for contacting the electrical contact pins 56a, 56b, can be formed on the changeover valve 40.

Claims

[1] Syringe pump system (2) comprising: a syringe (4) with a syringe sleeve (6) and a syringe plunger (8) movable in the syringe sleeve (6), wherein the syringe sleeve (6) has an opening (71) for receiving and dispensing a fluid; a switching valve (40) which is fluidically connected to the opening (71) in the syringe sleeve (6); and a syringe pump body (16) designed to support the syringe (4) and the changeover valve (40); wherein the syringe pump body (16) has at least one drive (20, 22) designed to drive the syringe piston (8) and / or the changeover valve (40); wherein the switching valve (40) has a switching valve data memory (52) in which switching valve data is stored; wherein a processor (26) is provided in the syringe pump body (16) which is configured to read the switching valve data from the switching valve data memory (52); and wherein at least one interface (54, 58) is formed between the syringe pump body (16) and the changeover valve (40), which makes it possible to transfer the changeover valve data from the changeover valve data memory (52) to the processor (26) in the syringe pump body (16). [2] Syringe pump system (2) according to claim 1, wherein the syringe (4) and / or the changeover valve (40) are detachably attached to the syringe pump body (16); wherein the syringe (4) is in particular detachably connected to the changeover valve (40). [3] Syringe pump system (2) according to one of the preceding claims, wherein the interface is part of a BUS system, in particular a serial BUS system, wherein the BUS system is configured to transfer data from the switching valve data storage (52) to the processor (26) in the syringe pump body (16). [4] Syringe pump system (2) according to one of the preceding claims, wherein the switching valve data includes operating parameters of the switching valve (40). [5] Syringe pump system (2) according to claim 4, wherein the changeover valve data includes at least one of the following parameters: maximum flow rate of the changeover valve (40); recommended flow rate of the changeover valve (40); maximum permissible pressure at the changeover valve (40); number of fluid ports (48a, 48b, 48c) of the changeover valve (40); indication of whether a pressure sensor is connected to the changeover valve (40); indication of whether a bubble sensor is present; number of switching operations that the changeover valve (40) has already performed; the switching speed of the changeover valve (40). [6] Syringe pump system (2) according to one of the preceding claims, wherein the changeover valve data includes a changeover valve identifier of the changeover valve (40); wherein the changeover valve identifier in particular makes it possible to determine operating parameters of the changeover valve (40) on the basis of the changeover valve identifier, for example, to read operating parameters of the changeover valve (40) from a database. [7] Syringe pump system (2) according to claim 6, wherein the changeover valve identifier comprises at least one of a type number, a serial number and a part number of the changeover valve (40). [8] Syringe pump system (2) according to one of the preceding claims, wherein the at least one interface (54, 58) comprises at least one electrical contact (54a-54c, 58a-58c), or wherein the at least one interface (54, 58) is configured for wireless data transmission. [9] Syringe pump system (2) according to claim 8, wherein the electrical interface (54, 58) comprises at least two, in particular three, electrical contacts (54a-54c, 58a-58c). [10] Syringe pump system (2) according to claim 8 or 9, wherein the interface (54, 58) has at least one electrical contact pin (58a-58c), in particular two or three electrical contact pins (58a-58c), and at least one, in particular two or three, corresponding electrical contact surfaces (54a-54c). [11] Syringe pump system (2) according to claim 10, wherein the at least one electrical contact pin (58a-58c) is formed on the syringe pump body (16) and wherein the at least one electrical contact surface (54a-54c) is formed on the switching valve (40). [12] Syringe pump system (2) according to one of the preceding claims, wherein the switching valve (40) comprises a switching valve housing (42) with a stationary area relative to the syringe pump body (16), wherein the switching valve data storage (52) is arranged in the stationary area of ​​the switching valve data storage (52); wherein the switching valve (40) is in particular a rotary valve having a rotating body which is rotatable relative to the stationary area. [13] Syringe pump system (2) according to one of the preceding claims, wherein the syringe (4) has a syringe data storage device (78) in which syringe data is stored, and wherein the syringe (4) has an interface (74) which makes it possible to transfer the syringe data from the syringe data storage device (78) to the processor (26) in the syringe pump body (16). [14] Syringe pump system (2) according to claim 13, wherein the interface (74) on the syringe (4) comprises at least one electrical contact (74a, 74b), or wherein the interface (74) on the syringe (4) is configured for wireless data transmission. [15] Syringe pump system (2) according to claim 13 or 14, wherein the switching valve (40) has a syringe interface (56) for connection with the interface (74) on the syringe (4); and wherein the switching valve (40) has a switching valve interface (54) which is electrically connected to the syringe interface (56) and is configured to transmit data received at the syringe interface (56) to the processor (26) in the syringe pump body (16). [16] Syringe pump system (2) according to one of claims 13 to 15, wherein the syringe pump data storage device (78) is arranged in the syringe sleeve (6) of the syringe (4) proximal to the opening of the syringe sleeve (6). [17] Syringe pump system (2) according to one of claims 13 to 16, wherein the interface (74) on the syringe (4) is arranged in an approximately ring-shaped manner in the syringe sleeve (6) of the syringe (4) proximal to the opening of the syringe sleeve (6). [18] Syringe pump system (2) comprising: a syringe (4) with a syringe sleeve (6) and a syringe plunger (8) movable in the syringe sleeve (6), wherein the syringe sleeve (6) has an opening for receiving and dispensing a fluid; a switching valve (40) which is fluidically connected to the opening of the syringe sleeve (6); and a syringe pump body (16) designed to support the syringe (4) and the changeover valve (40); wherein the syringe pump body (16) has at least one drive (20, 22) designed to drive the syringe piston (8) and / or the changeover valve (40); wherein a processor (26) is provided in the syringe pump body (16) which is designed to read the syringe data from the syringe data memory (78); wherein the syringe (4) has an electrical syringe data storage device (78) in which syringe data is stored and wherein the syringe (4) has an interface (74) on the syringe (4) which makes it possible to transfer syringe data from the syringe data storage device (78) to the processor (26) in the syringe pump body (16); wherein the switching valve (40) has a syringe interface (56) for connection to the interface (74) on the syringe (4); and wherein the switching valve (40) has a switching valve interface (54) which is electrically connected to the syringe interface (56) and is configured to transmit data received at the syringe interface (56) to the processor (26) in the syringe pump body (16). [19] Syringe pump system (2) according to one of claims 14 to 18, wherein the syringe interface (56) of the changeover valve (40) has at least one contact pin (56a, 56b) designed for contacting contact surfaces (74a, 74b) of the interface (74) on the syringe (4); wherein the syringe interface (56) of the changeover valve (40) has in particular at least two or at least three contact pins (56a, 56b). [20] Syringe pump system (2) according to one of claims 13 to 19, wherein the interface (74) on the syringe (4) is formed on a side of the syringe (4) which faces the changeover valve (40) when the changeover valve (40) is attached to the syringe (4). [21] Syringe pump system (2) according to one of claims 13 to 20, wherein the interface (74) on the syringe (4) has at least one, in particular two or three, contact surfaces (74a, 74b). [22] Syringe pump system (2) according to one of claims 13 to 21, wherein the interface (74) on the syringe (4) has curved contact surfaces (74a, 74b), in particular approximately ring-shaped contact surfaces (74a, 74b). [23] Syringe pump system (2) according to one of claims 13 to 22, wherein the syringe interface (56) and the changeover valve interface (54) are part of a BUS system, in particular a serial BUS system, wherein the BUS system is configured to transfer data from the syringe data storage (78) through the changeover valve (40) to the processor (26) in the syringe pump body (16). [24] Syringe pump system (2) according to one of claims 13 to 23, wherein the syringe data includes operating parameters of the syringe (4). [25] Syringe pump system (2) according to claim 24, wherein the syringe data includes at least one of the following operating parameters: maximum flow rate of the syringe (4); recommended flow rate of the syringe (4); maximum permissible pressure in the syringe (4); volume of the syringe (4); recommended write / read speed of a memory located in the syringe (4); number of pumping operations which the syringe (4) has already performed. [26] Syringe pump system (2) according to one of claims 13 to 25, wherein the syringe data includes a syringe identifier; wherein the syringe identifier in particular makes it possible to determine operating parameters of the syringe (4) on the basis of the syringe identifier, for example, to read operating parameters of the syringe (4) from a database. [27] Syringe pump system (2) according to claim 26, wherein the syringe identifier comprises at least one of a type number, a serial number and a part number of the syringe (4). [28] Syringe pump system (2) according to one of the preceding claims, wherein the syringe pump system (2) additionally has a user interface (99) which is designed and adapted to display at least one of the switching valve data and / or syringe data. [29] Syringe pump system (2) according to one of the preceding claims, wherein the changeover valve (40) has a pressure sensor fluid port (48c) for connecting a pressure sensor (90); and wherein the changeover valve (40) has a pressure sensor interface which makes it possible to transmit measurement data from the pressure sensor (90) via the changeover valve (40) to the processor (26) in the syringe pump body (16). [30] Syringe pump system (2) according to claim 29 with a pressure sensor (90) connected to the pressure sensor fluid port (48c). [31] Syringe pump system (2) according to one of the preceding claims, wherein the syringe pump system (2) additionally comprises at least one bubble sensor (14a, 14b) configured to communicate and exchange data with the processor (26) provided in the syringe pump body (16). [32] Syringe pump system (2) according to claim 31, wherein the switching valve (40) has a bubble sensor interface which makes it possible to transmit data from the at least one bubble sensor (14a, 14b) via the switching valve (40) to the processor (26) in the syringe pump body (16). [33] Syringe pump system (2) according to one of the preceding claims, wherein the switching valve (40) has a syringe fluid connection (50) which is fluidically connected to the opening (71) of the syringe sleeve (6), wherein the switching valve (40) has at least two fluid line connections (48a, 48b), and wherein the switching valve (40) is switchable between several switching states, wherein in each of the switching states one of the fluid line connections (48a, 48b) is in fluid communication with the syringe fluid connection (50). [34] Syringe pump system (2) according to one of the preceding claims, wherein a data storage device (28) for storing the read-out data is provided in the syringe pump body (16). [35] Syringe pump system (2) according to one of the preceding claims, wherein the syringe pump system (2), in particular the syringe pump body (16), has a data interface (94a, 94b), for example a USB interface (94a), which is configured to exchange data between the processor (26) in the syringe pump body (16) and a higher instance, for example a computer configured to control the syringe pump system (2). [36] Syringe pump system (2) according to one of the preceding claims, wherein the syringe pump system (2), in particular the syringe pump body (16), has a syringe piston drive (20) configured to drive the syringe piston (8), and wherein the syringe pump body (16) has a changeover valve drive (22) configured to drive the changeover valve (40). [37] Method for determining at least one parameter of a changeover valve (40) in a syringe pump system (2) which, in addition to the changeover valve (40) a syringe (4) with a syringe sleeve (6) and a syringe plunger (8) movable in the syringe sleeve (6); and comprising a syringe pump body (16) designed to support and drive the syringe (4) and the changeover valve (40); wherein the syringe sleeve (6) has an opening fluidically connected to the switching valve (40) for receiving and dispensing a fluid; wherein the switching valve (40) has a switching valve data memory (52) in which switching valve data is stored; the procedure includes using an interface to read changeover valve data from the changeover valve data memory (52) and to transfer it to a processor (26) provided in the syringe pump body (16). [38] Method according to claim 37, wherein the changeover valve data comprise operating parameters of the changeover valve (40), wherein the changeover valve data in particular comprise at least one of the following parameters: maximum flow rate of the changeover valve (40); recommended flow rate of the changeover valve (40); maximum permissible pressure at the changeover valve (40); number of fluid ports (48a, 48b, 48c) of the changeover valve (40); indication of whether a pressure sensor is connected to the changeover valve (40); indication of whether a bubble sensor is present; number of switching operations that the changeover valve (40) has already performed; the switching speed of the changeover valve (40). [39] Method according to claim 37 or 38, wherein the switching valve data includes a switching valve identifier of the switching valve (40); wherein the switching valve identifier in particular makes it possible to determine operating parameters of the switching valve (40) on the basis of the switching valve identifier, for example by reading them from a database. [40] Method according to claim 39, wherein the switching valve identifier comprises at least one of a type number, a serial number and a part number of the switching valve (40). [41] Method according to any one of claims 37 to 40, wherein the method comprises transmitting the data via at least one electrical contact of the interface, or wherein the method comprises transmitting the data wirelessly. [42] Method according to any one of claims 37 to 41, wherein the method further comprises, to recognize the existence of a syringe (4) on the syringe pump body (16); and to read syringe data from the syringe data storage (78) of the syringe (4) and to transfer it to the processor (26) provided in the syringe pump body (16). [43] Method according to claim 42, wherein the method comprises reading the syringe data from the syringe data memory (78) via a syringe interface (56) formed between the syringe (4) and the changeover valve (40) and a changeover valve interface (54) formed between the changeover valve (40) and the syringe pump body (16), and transferring it to the processor (26) provided in the syringe pump body (16). [44] Method for determining at least one parameter of a syringe (4) in a syringe pump system (2), wherein the syringe has a syringe sleeve (6) and a syringe plunger (8) movable in the syringe sleeve (6), as well as an opening for receiving and dispensing a fluid; wherein the syringe pump system (2) in addition to the syringe (4) a switching valve (40) which is fluidically connected to the opening of the syringe (4); and comprising a syringe pump body (16) designed to support and drive the syringe (4) and the changeover valve (40); wherein the syringe (4) has an electrical syringe data storage device (78) in which syringe (4) data is stored; and wherein the method comprises a syringe interface (56) formed between the syringe (4) and the changeover valve (40), and a changeover valve interface (54) formed between the changeover valve (40) and the syringe pump body (16), to recognize the existence of a syringe (4) on the syringe pump body (16); and to read syringe data from the syringe data storage (78) and transfer it to a processor (26) provided in the syringe pump body (16). [45] Method according to claim 43 or 44, wherein the syringe interface (56) and the changeover valve interface (54) are part of a BUS system, in particular a serial BUS system, which is configured to transfer data from the syringe data storage through the changeover valve (40) to the processor (26) in the syringe pump body (16). [46] Method according to any one of claims 42 to 45, wherein the syringe data comprise operating parameters of the syringe (4), wherein the syringe data in particular comprise at least one of the following operating parameters: maximum flow rate of the syringe (4); recommended flow rate of the syringe (4); maximum permissible pressure in the syringe (4); volume of the syringe (4); recommended write / read speed of a memory located in the syringe (4); number of pumping operations that the syringe (4) has already performed. [47] Method according to any one of claims 42 to 46, wherein the syringe data comprises a syringe identifier of the syringe (4); wherein the syringe data in particular makes it possible to determine operating parameters of the syringe (4), for example by reading them from a database. [48] ​​Method according to claim 47, wherein the syringe identifier comprises at least one of a type number, a serial number and a part number of the syringe (4). [49] Method according to any one of claims 37 to 48, wherein the method comprises reading pressure sensor data from a pressure sensor attached to the switching valve (40) and transferring it to the processor (26) provided in the syringe pump body (16). [50] Method according to any one of claims 37 to 49, wherein the method comprises reading bubble sensor data from a bubble sensor attached to the switching valve (40) and transferring it to the processor (26) provided in the syringe pump body (16). [51] Method according to any one of claims 37 to 50, wherein the method comprises exchanging data between the processor (26) and a higher instance, for example a computer configured to control the syringe pump system, via a data interface, for example a USB interface, which is formed on the syringe pump body (16). [52] Method according to any one of claims 37 to 51, wherein the method comprises displaying at least one of the switching valve data and / or syringe data to the user interface (99).

Images