Medical transfer system for a medical pump, clamp module for a medical pump, medical pump and method for detecting a medical transfer system

Abstract

The invention relates to a medical transfer system (14, 18) for use with a medical pump (1), at least comprising: a tube (14) which is provided and designed to be inserted into a tube receptacle (12) or pump section of the pump (1) in sections in order to transfer a fluid from a reservoir to a patient, and a tube clamp (18) which is provided on the tube (14) and has a predetermined colour and / or optical marking, wherein the tube clamp (18) is provided and designed to be inserted into the pump (1) at least in sections and to be irradiated with a light beam (34e) at / with main wavelengths (42a, 42b, 42c, 42d) using a light source (34) of the pump (1) so that the light (34r) reflected or reflecting off the tube clamp (18) is received by a photodetector arrangement (38; 138; 238) of the pump (1) and separated into individual signals (46a, 46b, 46c, 46d) at the main wavelengths. The invention further relates to a medical clamp module, to a medical pump, and to a method for detecting a medical transfer system in a medical pump.

Description

[0001] Medical transfer system for a medical pump, terminal module for a medical pump, medical pump and

[0002] Procedures for identifying a medical transfer system

[0003] Description

[0004] Technical field

[0005] The present disclosure relates to a medical administration system for use with a medical pump, a clamping module for a medical pump, a medical pump, and a method for identifying a medical administration system based on the color of a hose clamp of the medical administration system.

[0006] Background of the Revelation

[0007] A medical infusion set or IV line has at least one tube and a tube clamp attached to it – usually permanently. The tube clamp can be a sliding clamp and interacts with the tube in such a way as to selectively prevent free flow through it. Often, such a tube clamp is actuated by the pump itself during the insertion of the infusion set, for example, by a front cover of the pump during its closing movement. Alternatively, the tube clamp can be actuated manually, independently of any closing mechanism of the pump.

[0008] The hose clamp typically has a tapered elongated hole through which the hose passes. The hose is not closed at one end of the hole and is compressed when pushed to the other end. In some cases, the sliding hose clamp also functions as a key for turning the hose on and off.

[0009] BB2539P-WO-0020: B. Braun Melsungen AG infusion pump and can help secure the tubing of the infusion set within the pump channel. On some pumps, the tubing clamp / sliding clamp also serves as a key to open the pump door for loading or unloading the infusion tubing. The pump door is unlocked by pressing part of the tubing clamp / sliding clamp into a slot in the pump body. Pressing the tubing clamp / sliding clamp into the slot forces the tubing towards the narrow end of the conical opening, thus closing the tubing. The tubing clamp therefore provides a degree of safety by preventing free flow, as it compresses the tubing when the pump door is opened.

[0010] Hose clamps of this type are often designed to fit a specific pump, ensuring that only compatible transfer systems are used with that pump. Therefore, it is important to be able to verify that the correct hose clamp is being used, or to identify the type of transfer system in use.

[0011] State of the art

[0012] Prior art US patent 9,272,129 B2 discloses an infusion set in which a sliding clamp / tube clamp can be coded using colors, holes, or the like to identify the type of infusion tubing used with it. The infusion pump can recognize the code on the tubing clamp / sliding clamp and thereby determine the type of infusion tubing, thus allowing access only to infusion programs for medications or infusion solutions compatible with that specific tubing type.

[0013] Furthermore, US patent 2006 / 0224128 A1 discloses a system and method for the automated administration of an infusion to a patient. The system comprises an infusion set and an infusion device. A signaling component arranged on an infusion set component identifies an administration protocol for the infusion set. An operationally connected component to the infusion device

[0014] BB2539P-WO-0020: The B. Braun Melsungen AG detection device detects the signaling component and identifies the administration protocol. The infusion device is then configured to operate according to the administration protocol.

[0015] Documents US 5 290 239 A and US 6 635 033 B1 each show an optical control system for determining the correct size and function of a tubing clamp in order to prevent infusion operation in the case of an incorrect tubing clamp.

[0016] German patent application DE 10 2021 215 067 A1 discloses a medical pump with an opto-electrical system by which an inserted hose clamp is irradiated with different wavelengths and the reflected light is evaluated to determine the color of the hose clamp. It is also proposed to equip the hose clamp(s) with an infrared marker for improved color discrimination.

[0017] The current state of the art has the disadvantage that the technical effort required to irradiate the hose clamp or to capture the light reflected from it is high.

[0018] Brief description of the Revelation

[0019] Against this background, the present disclosure is based on the objective technical task of eliminating or at least reducing the disadvantages of the prior art and providing a medical transfer system, a clamping module, a medical pump and a method by which a medical transfer system can be detected with less effort, in particular less equipment-related effort.

[0020] The problem is solved with regard to the medical transfer system by the features of claim 1, with regard to the clamp module by the features of claim 4, with regard to the pump by the features of claim 13, and with regard to the method by the features of claim 13.

[0021] BB2539P-WO-0020: B. Braun Melsungen AG, patent claim 14 solved. Advantageous further developments are described in the dependent claims.

[0022] The present disclosure relates to a medical transfer system, in particular a transfusion set or an infusion set, for use with a medical pump, in particular a transfusion pump, infusion pump, pain pump or enteral pump, which is preferably designed as a peristaltic pump. The transfer system comprises at least: a tube designed and configured to be inserted section by section into a tube receptacle or pump section of the pump in order to transfer a fluid from a reservoir to a patient, and a tube clamp, in particular a sliding clamp, provided on the tube, preferably permanently, with a predetermined color and / or predetermined optical marking.According to the disclosure, the hose clamp is designed and configured to be inserted, preferably pushed in, at least partially into the pump and to be irradiated by a light source of the pump with a light beam having a spectrum with different principal wavelengths or principal frequencies, in order to subsequently receive the light reflected or reflected at the hose clamp from a detector arrangement of the pump and to separate it into individual signals of the principal wavelengths.

[0023] In this way, a medical transfer system is created in which, firstly, the hose clamp is not irradiated sequentially, but instead simultaneously with different principal wavelengths, and secondly, the individual signals of the principal wavelengths of the reflected or reflecting light are not determined sequentially, but simultaneously by the one detector arrangement.

[0024] The medical transfer system, as disclosed and designed, can therefore be detected with less effort, in particular with less technical equipment.

[0025] BB2539P-WO-0020 : B. Braun Melsungen AG According to further training, the hose clamp has the color magenta, green, grey, red, white, yellow, pink, blue or orange, or the individual signals have signal strengths which in total correspond to magenta, green, grey, red, white, yellow, pink, blue or orange.

[0026] According to a preferred embodiment, the color is orange or blue or green with infrared absorber or white with infrared absorber.

[0027] The color orange preferably has a normalized reflectance for blue at the principal wavelength 466 nm of 14.1% to 42.0%, for green at the principal wavelength 518 nm of 0.0% to 23.2%, and for red at the principal wavelength 629 nm of 101.1% to 108.8%.

[0028] The color blue preferably has a normalized reflectance for blue at the principal wavelength 466 nm of 5.5% to 33.7%, for green at the principal wavelength 518 nm of 44.6% to 62.7%, and for red at the principal wavelength 629 nm of 0.0% to 17.6%.

[0029] The green color with infrared absorber preferably has a normalized reflectance for blue at the principal wavelength 466 nm of 183.6% to 555.5%, for green at the principal wavelength 518 nm of 166.3% to 420.5%, and for red at the principal wavelength 629 nm of 0.0% to 71.3%.

[0030] The color white with infrared absorber preferably has a normalized reflectance for blue at the principal wavelength 466 nm of 168.3% to 580.4%, for green at the principal wavelength 518 nm of 168.3% to 568.0%, and for red at the principal wavelength 629 nm of 168.3% to 516.7%.

[0031] According to further training, the optical marking is an infrared marking. Specifically, the optical marking is an infrared absorber with a predetermined concentration in the material of the hose clamp, such that absorption or reflection by the hose clamp in the infrared range is predetermined and / or set.

[0032] BB2539P-WO-0020: B. Braun Melsungen AG. Furthermore, the present disclosure relates to a clamping module of or for a medical pump, in particular a transfusion pump, infusion pump, pain pump, or enteral pump, which is preferably designed as a peristaltic pump. The clamping module has or incorporates an electro-optical system. The electro-optical system is designed and configured to detect a tubing clamp of a medical supply system that can be inserted at least partially into the clamping module and has a predetermined color and / or optical marking. In particular, the medical supply system is designed according to at least one aspect of the preceding description.The electro-optical system has at least the following system components: a light source designed and configured to send a light beam with several principal wavelengths onto the tubing clamp, that is, to illuminate the tubing clamp simultaneously at several principal wavelengths, and a photodetector arrangement designed and configured to receive light reflected or reflected from the medical delivery system, in particular from the tubing clamp. According to the disclosure, the photodetector arrangement is designed and configured to separate the reflected or reflected light into individual signals of the principal wavelengths. That is, the individual signals are not detected sequentially by the photodetector arrangement, but rather simultaneously, and are separated simultaneously. In other words, the photodetector arrangement is designed and configured to be spectrally sensitive.

[0033] According to the disclosure, a terminal module for a medical pump is thus created, through which the detection of a medical transfer system is achieved with less effort, in particular less equipment-related effort.

[0034] Preferably, the clamping module has an optical window for focusing the light beam emitted by the light source and / or for focusing the light reflected or reflected by the hose clamp towards the photodetector arrangement. Preferably, the window is made of plastic.

[0035] BB2539P-WO-0020 : B. Braun Melsungen AG According to a further development, the photodetector arrangement has only one (single) photodetector, which is designed and configured to be spectrally sensitive, resulting in a particularly compact terminal module in terms of device technology.

[0036] According to a further development, the photodetector arrangement has one photodetector per principal wavelength, from which the spectral sensitivity of the photodetector arrangement as disclosed results.

[0037] According to a further development process, the arrangement of the photodetectors, in particular their position and / or orientation relative to each other, is adjusted to different diffraction angles of the principal wavelengths at the hose clamp. This ensures that each photodetector is illuminated by the light reflected from the hose clamp at its assigned wavelength with the highest possible intensity or amplitude. This increases the robustness of the color detection.

[0038] According to a further training, the photodetectors are arranged together in one plane, resulting in a device-technically simple arrangement, in particular position and / or orientation, of the photodetectors.

[0039] Alternatively or additionally, at least two of the photodetectors are arranged in at least two different planes, in particular with the aim of arranging the photodetectors in a manner adapted to the different diffraction angles.

[0040] According to further training, the maximum distance between each photodetector is 1 mm.

[0041] According to a further development, the distance between the light source and the hose clamp and / or the distance between the photodetector arrangement and the hose clamp is between 3 and 6 mm, preferably between 4 and 5 mm. Such a small distance minimizes scattering effects and keeps the intensity of the reflected light within an optimal range.

[0042] BB2539P-WO-0020 : B. Braun Melsungen AG According to further training, the light source has or is an RGB LED, preferably a combined RGB LED.

[0043] According to a further development, the light source has or is a red LED, where one of the principal wavelengths is red at 630 nm ± 16 nm. Alternatively or additionally, the light source has or is a green LED, where one of the principal wavelengths is green at 520 nm ± 33 nm. Alternatively or additionally, the light source has or is a blue LED, where one of the principal wavelengths is blue at 467 nm ± 25 nm.

[0044] According to further training, the light source additionally has or is an infrared or IR LED, one of the main wavelengths being near infrared at 950nm ± 42nm.

[0045] Preferably, for differentiated color recognition, the RGB individual signals are evaluated together with the IR individual signals.

[0046] Preferably, the light source and the photodetector arrangement are arranged on a common circuit board of the terminal module in a space-saving manner.

[0047] Preferably, an evaluation unit and / or processor unit of the clamp module or the pump is provided, and the evaluation unit and / or processor unit is designed to determine the color of the hose clamp depending on the individual signals and to identify the medical transfer system used, in particular its type and / or predetermined use.

[0048] When the medical infusion set is inserted into the pump, the inserted infusion set can be identified by the photodetector arrangement and the evaluation unit or processor unit based on the individual signals or the detected color, and in particular used to activate parameters in a control unit of the pump. These parameters include, for example,

[0049] Parameters for controlling pressure detection,

[0050] Parameters for controlling air detection,

[0051] BB2539P-WO-0020: B. Braun Melsungen AG Parameters for defining a maximum dwell time of the medical

[0052] Transfer system and / or

[0053] Parameters for Air-Stop filter (yes / no).

[0054] The parameters to be activated are preferably stored in a medical transfer system data set.

[0055] According to the disclosure, the principal wavelengths are preferably:

[0056] Red: Main wavelength 630 nm ± 16 nm

[0057] Green: Main wavelength 520 nm ± 33 nm

[0058] Blue: Main wavelength 467 nm ± 25 nm

[0059] Infrared (IR): Main wavelength 950 nm ± 42 nm

[0060] Regarding a specific hose clamp material, the areas shown in the following lookup table prove to be preferred. The lookup table displays the predetermined individual signals of the principal wavelengths as reflection values ​​in percent of a standard or reference for the predetermined, recognizable colors of the hose clamp:

[0061] BB2539P-WO-0020: B. Braun Melsungen AG. The predetermined individual signals of the principal wavelengths or reflection values ​​are—as already mentioned—dependent on the material of the hose clamp, meaning they change for different materials. In other words, the incident principal wavelengths are reflected at the hose clamp with varying reflectances depending on the material used and any dye / pigment additives in the clamp. This reflectance is stored in the pump (for a specific material) in the form of a lookup table. This table allows the color of the hose clamp to be determined by comparing the individual signals (in R, G, B, and / or IR) to each other.

[0062] This means that if the hose clamp is made of a different material, a new lookup table must be provided. However, it is preferable if the resulting remission spectra remain unchanged in their properties.

[0063] Furthermore, the present disclosure relates to a medical pump, in particular a transfusion pump, infusion pump, pain pump or enteral pump, which is preferably designed as a hose pump and which has a clamping module which has according to at least one aspect of the preceding description.

[0064] Furthermore, the present disclosure relates to a method / measuring algorithm for detecting a medical administration system, which is designed in particular according to at least one aspect of the preceding description, based on at least one color and / or optical marking of the tubing clamp and after the medical administration system has been inserted, preferably after the tubing clamp has been inserted, into a medical pump, which is designed in particular according to at least one aspect of the preceding description. According to the disclosure, the method / measuring algorithm has the following steps: preferably and preparatory: measuring a temperature, in particular an ambient temperature;

[0065] BB2539P-WO-0020 : B. Braun Melsungen AG preferably and in preparation: Measurement of ambient light and determination of ambient brightness, in particular a dark value;

[0066] Sending a light beam in / with principal wavelengths, in particular red and / or green and / or blue, preferably supplemented by a principal wavelength of near-infrared, onto the hose clamp, by means of a light source of the pump, that is, the hose clamp is irradiated or illuminated by the light beam simultaneously in / with several principal wavelengths,

[0067] Receiving the light reflected or reflected at the hose clamp, via a photodetector arrangement of the pump,

[0068] Separation of the reflected or reflecting light into individual signals of the main wavelengths via the photodetector arrangement, that is, the photodetector arrangement is spectrally sensitive and simultaneously separates the individual signals of the main wavelengths.

[0069] Determining the color of the hose clamp by comparing the individual signals with a lookup table / evaluation table stored in the medical pump, and

[0070] Identifying the transfer system based on its color.

[0071] It is preferred if calibration data is already provided in an evaluation unit and / or processor unit of the clamp module or the pump, which is used to initialize the procedure / measurement algorithm, and the lookup table / evaluation table has an optical characterization of the hose clamp used with regard to its reflection and fluctuations in the measurement can be compensated for by means of a value range stored therein.

[0072] In other words, the calculation of the individual signals incorporates a remission spectrum of the hose clamp, captured by the detector array. The individual signals of the principal wavelengths are available as so-called "counts" and are, in particular, analog-to-digital measurements from the photodetector array. The individual signals are further dependent on the calibration data (especially white balance), the ambient temperature, and the dark value (influence of ambient light). This results in a subsequent calculation basis.

[0073] BB2539P-WO-0020: B. Braun Melsungen AG A prerequisite for carrying out the procedure / measurement algorithm is the availability of calibration data, preferably including temperature measurements. The calibration data is required for the "initialization" of the procedure / measurement algorithm. The calibration data generates a reflection coefficient via a white standard, which is incorporated into the calculation and, in its overall approximation, depends on temperature and illuminance.

[0074] Furthermore, the following measurements are recorded. The first measurement is the temperature, and the second is the illumination of the hose clamp in the primary wavelengths (RGB). This second measurement represents analog / digital values ​​for each color. A further measurement records the dark value, which describes the reading at the photodetector array without illumination from the light source. It is also necessary to compensate for any light that may enter the clamp module from the outside during the measurement (corresponding to the ambient light mentioned above). The individual signals are then corrected for the dark value. The individual signals themselves are those of the photodetector array at a given measurement point in time for each individual color.

[0075] Subsequently, the individual signals undergo temperature compensation using a polynomial that approximates the temperature profiles of the light source, particularly the LEDs. This means that the light source and / or its luminous flux behave differently at different temperatures. Therefore, the course of this temperature degradation for each color is approximated using a polynomial-fitted temperature curve of the LED colors (3rd-degree polynomial). Based on this, a reflectance calculation is performed for each color, normalized to the calibration data. These reflectance values ​​are compared for each principal wavelength with the minimum and maximum values ​​stored in the lookup or evaluation table. This comparison takes into account any additional, potential contamination, which is why the relative ratio between the measured and evaluation table values ​​is considered when assigning the colors.In this process, either all measured values ​​of the four main wavelengths (RGB and IR) can be used for color determination. Alternatively, the intensity / amplitude of the scaling factor can be chosen if there is no clear color assignment.

[0076] BB2539P-WO-0020: B. Braun Melsungen AG. The lookup table is generated and measured during the material qualification of the hose clamp. It includes the optical characterization of the material used with respect to its reflection of the colors red, green, blue, and IR. The evaluation table includes a value range (m in. / max. value) to compensate for variations in color measurement. Further information on the wavelengths has already been described above. The inclusion of an IR component is necessary to distinguish, for example, the colors red and yellow from other colors with identical reflection properties (remission spectrum). Without the incorporated IR markers, which are homogeneously integrated into the hose clamp / slide clamp, the remission spectra would differ in their amplitude, but the actual shape and the ratio of all colors to each other would be identical. Unambiguous identification would therefore not be possible.

[0077] In summary, the method, or rather the measurement algorithm, is based on the idea of ​​illuminating the tubing clamp of the medical administration system inside the pump with a single light source that has a spectrum in at least two principal wavelengths. The emitted light beam is reflected at the tubing clamp, and the reflected light is separated into individual signals of the principal wavelengths by the spectrally sensitive photodetector array. Depending on the individual signals, the color, or different colors, of the tubing clamp can be determined.

[0078] At least one calibration of the electro-optical system is necessary to compensate for the influences of the installation situation, such as tolerances in the mounting positions of the light source and the photodetector arrangement, as well as electronic tolerances of the system components. The calibration generates an offset value pair that is used for compensation in the procedure or measurement algorithm.

[0079] Brief description of the characters

[0080] BB2539P-WO-0020 : B. Braun Melsungen AG Fig. 1 is a representation of a medical peristaltic pump with an inserted medical transfer system according to an embodiment of the present disclosure, in a perspective view from the front;

[0081] Fig. 2 is a representation of the medical peristaltic pump according to Figure 1 with the front flap open and with the medical transfer system inserted, in a perspective view from the front;

[0082] Fig. 3 is a representation of the medical transfer system according to Figures 1 and 2 with a tube and a tube clamp designed as a sliding clamp, which has a predetermined color;

[0083] Fig. 4 is a representation of a detached terminal module of the medical peristaltic pump according to Figures 1 and 2;

[0084] Fig. 5 is a view of a vertical section of the terminal module according to Figure 4, in perspective view;

[0085] Fig. 6 is a representation of a cut-out circuit board of the terminal module according to Figures 4 and 5, in a side view;

[0086] Fig. 7 is a representation of a longitudinal section of the terminal module according to Figures 4 and 5, with a view of an electro-optical system of the terminal module;

[0087] Fig. 8 is a representation of the terminal module according to Figures 4, 5 and 7 in a side view, with a rear view of the circuit board;

[0088] Fig. 9 is a schematic representation of a method / measurement algorithm for identifying the medical transfer system inserted into the medical peristaltic pump, based on the color of the hose clamp, according to the present disclosure;

[0089] BB2539P-WO-0020 : B. Braun Melsungen AG Fig. 10 a photodetector arrangement of the medical peristaltic pump according to Figures 1 to 8 with photodetectors per principal wavelength, which according to an embodiment are arranged in only one plane; and

[0090] Fig. 11 shows a photodetector arrangement of the medical peristaltic pump according to Figures 1 to 8 with photodetectors per principal wavelength, which according to a further embodiment are arranged distributed on several levels.

[0091] Description of the exemplary implementations

[0092] The following are examples of embodiments of the present disclosure based on the accompanying figures.

[0093] Figure 1 shows a front view of a medical peristaltic pump 1 designed as an infusion device or infusion pump. The peristaltic pump 1 has a housing 2 with a front panel 4 and a hose compartment cover 10 hinged to the underside, on which a control panel 6 and a display 8 are arranged. A hose compartment 12 – also referred to as hose receptacle or pump section – is closed off by the hose compartment cover 10, into which an infusion hose 14 of a medical administration system 14, 18 as disclosed is inserted (see Figure 2).

[0094] Figure 2 shows the medical peristaltic pump 1 according to Figure 1 with the tubing compartment cover 10 open. As shown in Figure 2, the infusion tubing 14 extends from the right, starting from an infusion container (not shown) of the distribution system 14, 18, into the elongated tubing compartment 12. Closing the tubing compartment cover 10 secures the infusion tubing 14 in the tubing compartment 12. The tubing compartment cover 10, when closed during operation (see Figure 1), fixes the infusion tubing 14 in its operating position and forms a wall against which displacement elements (not shown) arranged behind the tubing compartment 12 compress the infusion tubing 14 in a peristaltic sequence, thus conveying the fluid to be infused to the patient. The tubing compartment 12 is therefore sometimes also referred to as the pump section and is thus part of the peristaltic mechanism of the peristaltic pump 1.

[0095] BB2539P-WO-0020 : B. Braun Melsungen AG To ensure that the fluid flow to the patient occurs exclusively through the operation of the peristaltic pump 1 and not prematurely - for example, due to gravity effects when inserting the infusion tube 14 into the tube compartment 12 - a redundant clamping system is provided.

[0096] Firstly, a permanently attached hose clamp 18 is provided on the infusion tubing 14 itself. Secondly, the peristaltic pump 1 has a clamping module 20 with an integrated clamping mechanism (not shown). The clamping mechanism is activated when the infusion tubing 14 is inserted by inserting and sliding the hose clamp 18 into a receptacle 22 of the clamping module 20 and subsequently closing the tubing compartment cover 10.

[0097] Fig. 3 shows the medical transfer system according to Figures 1 and 2 with the tube 14 and the tube clamp 18, which is designed as a sliding clamp and has a predetermined color. In addition to the predetermined color, the tube clamp 18 according to the disclosure has an optical marking, which in the illustrated embodiment is an admixture of a near-infrared absorber, in a predetermined concentration, to the material of the tube clamp 18. This optical marking, in addition to the predetermined color, represents a supplementary differentiating feature of the tube clamp 18, by means of which the tube clamp 18—and consequently the medical transfer system 14, 18—can be uniquely identified / recognized according to the disclosure.

[0098] The predetermined color of the hose clamp 18 is detected / determined / recognized, as disclosed, by means of an electro-optical system of the terminal module 20 when / after the hose clamp 18 is inserted / slid into the receptacle 22 of the terminal module 20 of the peristaltic pump 1 (see Fig. 2). Depending on the detected / determined / recognized color, an operating parameter of the peristaltic pump 1 associated with that color can subsequently be activated / released / initialized.

[0099] To receive and clamp the hose 14, the hose clamp 18 has a tapered elongated hole, in the widened area of ​​which the hose 14 lies when the

[0100] BB2539P-WO-0020: B. Braun Melsungen AG hose clamp 18 is not yet inserted into the receptacle 22. When the hose clamp 18 is inserted / inserted / placed into the receptacle 22, it actuates the machine's own clamping mechanism, which clamps the infusion tube 14 off the hose clamp 18, thus preventing uncontrolled fluid flow before the peristaltic pump 1 is started. Conversely, when the hose compartment cover 10 is opened, the hose clamp 18 is pulled over the infusion tube 14 by its hook (located on the left in Figure 3) and closes it.

[0101] Fig. 4 shows the isolated terminal module 20 of the medical peristaltic pump 1 according to Figures 1 and 2. The terminal module 20 has a printed circuit board 24, which is attached to a frame / support structure of the terminal module 20 by screws 28. Components of an electro-optical system of the terminal module 20 are placed on the printed circuit board 24, including an evaluation module 32, which will be explained in more detail below. The printed circuit board 24 has a ribbon cable 30, via which it is / can be connected to a mainboard of the peristaltic pump.

[0102] Fig. 5 shows the section AA of the clamping module 20 defined in Figure 2, as shown in Figures 1, 2, and 4. The clamping module 20 is isolated in this view. Section AA runs below the hose 14 in Figure 2, so the hose is not visible in Figure 5. The perspective direction is approximately the same as in Figure 2. Accordingly, the recess 22 of the clamping module 20 in Figure 5 extends from the lower left to the upper right. The hose clamp 18 is inserted into the recess 22 (dashed line).

[0103] In Figure 5, the circuit board 24 is attached to the rear of the frame / support structure of the terminal module 20. A light source of the electro-optical system of the terminal module 20 is designed as a combined RGB-IR LED 34 and emits a light beam 34e onto the inserted hose clamp 18 in principal wavelengths red, green, and blue of the visible spectrum, as well as in one principal wavelength of the near-infrared. That is, the different principal wavelengths are emitted simultaneously—rather than sequentially.

[0104] BB2539P-WO-0020 : B. Braun Melsungen AG A photodetector arrangement 38 of the electro-optic system of the terminal module 20 is arranged on the circuit board 24 in close proximity to the light source 34 and receives the light 34r reflected by the hose clamp 18. The light 34r reflected by the hose clamp 18 strikes the photodetector arrangement 38, which is signal-connected to the evaluation module 32 of the electro-optic system of the terminal module 20.

[0105] In the illustrated embodiment, the photodetector arrangement consists of (only) one spectrally sensitive photodetector 38. This means that the photodetector 38 is designed and configured to separate the light 34r incident on it simultaneously at the principal wavelengths of red, green, blue, and near-infrared into individual signals of the principal wavelengths of red, green, blue, and near-infrared. Alternatively, the photodetector arrangement can have several photodetectors, in particular one for each principal wavelength. This is discussed in more detail in Figures 10 and 11.

[0106] These individual signals are subsequently transmitted to the signal-connected evaluation module 32 of the electro-optical system of the clamp module 20. Evaluation module 32 contains a lookup table in which predetermined intervals of the individual signals in the principal wavelengths are listed as reflection values ​​for predetermined colors of the hose clamp 18. By comparing the individual signals with the intervals listed in the lookup table, evaluation module 32 determines the color of the hose clamp 18 and, based on this color, identifies / detects the inserted medical supply system 14, 18.

[0107] As shown in Figure 5, a two-part optical window 40, 42 is provided between the hose clamp 18 on the one hand and the light source 34 and photodetector arrangement 38 on the other. One section 40 of the optical window 40, 42 is designed to direct the light beam 34e onto the hose clamp 18. The other section 42 of the optical window 40, 42 is designed as a plastic lens, through which the light 34r diffusely reflected by the hose clamp 18 is focused onto the photodetector arrangement 38.

[0108] BB2539P-WO-0020 : B. Braun Melsungen AG Fig. 6 is a representation of the isolated circuit board 24 of the terminal module 20 with the evaluation module 32, the light source 34 and the photodetector arrangement 38 of the electro-optical system of the terminal module 20.

[0109] Fig. 7 is a representation of a longitudinal section of the terminal module 20 with a view of the light source 34 and the photodetector arrangement 38 of the electro-optical system of the terminal module 20.

[0110] Fig. 8 is a representation of the terminal module 20 with a rear view of the circuit board 24 and the light source 34 and the photodetector arrangement 38 of the electro-optical system of the terminal module 20.

[0111] Fig. 9 shows a block diagram of a disclosed method / measurement algorithm for detecting the above-described medical transfer system 14, 18 based on the color of the hose clamp 18 and after the medical transfer system 14, 18 has been inserted and the hose clamp 18 has been inserted into the receptacle 22 of the clamp module 20 of the medical pump 1. Preferably, the ambient temperature is measured first in order to compensate for the temperature dependence of the light source 34 and the photodetector arrangement 38. Likewise, the ambient light is preferably measured first, and the ambient brightness is determined, in order to compensate for the boundary conditions of the illumination.

[0112] According to the disclosure, in accordance with the method / measurement algorithm according to Figure 9, a step S1 is sent of the light beam 34e in / with the principal wavelengths 42a, 42b, 42c and 42d - or in / with the corresponding principal frequencies - onto the hose clamp 18, by means of the light source 34 of the pump 1 designed as a combined RGB-IR LED.

[0113] According to the disclosure, the hose clamp 18 is thus simultaneously (instead of sequentially) in / with the principal wavelengths 42a, 42b, 42c and 42d of the near-infrared IR, the blue B,

[0114] BB2539P-WO-0020: B. Braun Melsungen AG is irradiated with green G and red R. The principal wavelengths 42a, 42b, 42c and 42d represent the illumination spectrum 40 of the light beam 34e according to Figure 9.

[0115] In a further step S2, the light 34r is reflected S2.1 at the hose clamp 18 with a reflection spectrum 44 and the light 34r reflected at the hose clamp 18 is received S2.2 via the photodetector arrangement 38.

[0116] In a further step S3, the reflected light 34r is separated S3.1 into individual signals 46a, 46b, 46c, 46d of the principal wavelengths via the photodetector arrangement 38, the color is determined S3.2 by comparing the individual signals 46a, 46b, 46c, 46d with the evaluation table or lookup table stored in the medical pump 1, and the transfer system 14, 18 is recognized S3.3 based on the color.

[0117] It is preferred if the hose clamp material is a thermoplastic polymer based on polyolefin or polyoxymethylene.

[0118] Figure 10 shows a further embodiment of a photodetector arrangement 138 of the medical pump 1 according to Figures 1 to 9, or of the medical terminal module 20. Each principal wavelength 42a, 42b, 42c and 42d – i.e., R, G, B and IR – is assigned a photodetector 38a, 38b, 38c, 38d. In this embodiment, the photodetectors 38a, 38b, 38c, 38d are arranged in only one, i.e., a common, plane 48a, which can be achieved very simply by populating the circuit board 24.

[0119] Figure 11 shows another embodiment of a photodetector arrangement 238 of the medical pump 1 according to Figures 1 to 9, or of the medical terminal module 20. Here again, each of the principal wavelengths 42a, 42b, 42c and 42d – i.e., R, G, B and IR – is assigned a photodetector 38a, 38b, 38c, 38d. Unlike the embodiment according to Figure 10, however, the photodetectors 38a, 38b, 38c, 38d are arranged in two different planes 48a, 48b.

[0120] BB2539P-WO-0020 : B. Braun Melsungen AG Basically, the resolution of the photodetector arrangement 138; 238 into the individual photodetectors 38a - 38d offers the possibility of assigning each of the photodetectors 38a - 38d an individual location, in particular an individual position and / or individual orientation.

[0121] This means that when designing the photodetector arrangement 138; 238, positions and / or orientations of the photodetectors 38a - 38d relative to each other are adjustable, selectable or optimizable.

[0122] In particular, the position and / or orientation of the photodetectors 38a - 38d can thus be adjusted to different diffraction angles, which the different principal wavelengths 42a, 42b, 42c, 42d may experience at the hose clamp 18.

[0123] In this way, the intensity of the light incident on each photodetector 38a - 38d can be optimized, thus maximizing the individual signals 46a - 46d of each photodetector 38a - 38d. This increases the robustness of the color detection, meaning the risk of false detection is further minimized.

[0124] Preferably, the distance between each photodetector 38a, 38b, 38c, 38d is a maximum of 1 mm.

[0125] BB2539P-WO-0020 : B. Braun Melsungen AG Reference number

[0126] 1 Medical Pump

[0127] 2 cases

[0128] 4 Front

[0129] 6 Control panel

[0130] 8 Display

[0131] 10 hose compartment covers

[0132] 12 hose compartments

[0133] 14 hoses (transfer system)

[0134] 18 Hose clamp (transfer system)

[0135] 20 medical clamp modules

[0136] 22nd recording

[0137] 24 circuit boards

[0138] 26 pushbuttons

[0139] 28 screw

[0140] 32 Evaluation module

[0141] 34 Light source

[0142] 34e Light beam

[0143] 34r reflected light

[0144] 38; 138; 238 Photodetector arrangement

[0145] 38a - 38d Photodetector

[0146] 40 illumination spectrum

[0147] 42a - d Emission signal main wavelength

[0148] 44 Remission spectrum hose clamp

[0149] 46a - d Single signal main wavelength

[0150] 48a, 48b Level

[0151] S1 Step Send Light Beam

[0152] Step 52.1 Reflecting Light

[0153] Step 52.2 Receiving Light

[0154] S3.1 Step Separating Individual Signals

[0155] BB2539P-WO-0020 : B. Braun Melsungen AG 3.2 Step Determine Color 3.3 Step Recognize Transition System

[0156] BB2539P-WO-0020 : B. Braun Melsungen AG

Claims

Claims 1. Medical transfer system (14, 18) for use with a medical pump (1) comprising at least: a tube (14) designed and configured to be inserted section by section into a tube receptacle (12) or pump section of the pump (1) to transfer a fluid from a reservoir to a patient, and a tube clamp (18) provided on the tube (14) with a predetermined color and / or optical marking, wherein the tube clamp (18) is designed and configured to be inserted at least section by section into the pump (1) and to be illuminated by a light source (34) of the pump (1) with a light beam (34e) in / with principal wavelengths (42a, 42b, 42c, 42d) in order to receive the light (34r) reflected or reflected at the tube clamp (18) by a photodetector arrangement (38; 138; 238) of the pump (1) and to convert it into individual signals (46a, 46b, 46c, 46d) of the principal wavelengths to separate.

2. Medical transfer system (14, 18) according to claim 1 , characterized in that the color is magenta, green, grey, red, white, yellow, pink, blue or orange.

3. Medical transfer system (14, 18) according to claim 1 or 2, characterized in that the optical marking is formed by an infrared absorber.

4. Medical clamping module (20) of or for a medical pump (1), which forms or has an electro-optical system designed and configured to detect a hose clamp (18) of a medical transfer system (14, 18) that can be inserted at least partially into the clamping module (20) and has a predetermined color and / or optical marking, comprising at least the following system components: a light source (34) designed and configured to send a light beam (34e) with, in particular at least two, principal wavelengths (42a, 42b, 42c, 42d) onto the hose clamp (18), and BB2539P-WO-0020 : B. Braun Melsungen AG a photodetector arrangement (38; 138; 238) which is provided and configured to receive reflected or reflective light (34r) at the medical transfer system (18), in particular at the tube clamp (18), characterized in that the photodetector arrangement (38; 138; 238) is provided and configured to separate the reflected or reflective light (34r) into individual signals (46a, 46b, 46c, 46d) of the principal wavelengths.

5. Medical clamping module (20) according to claim 4, characterized in that the photodetector arrangement (38) has a single, in particular spectrally sensitive, photodetector.

6. Medical clamping module (20) according to claim 4, characterized in that the photodetector arrangement (138; 238) has one, in particular spectral-specific, photodetector (38a, 38b, 38c, 38d) per principal wavelength (42a, 42b, 42c, 42d).

7. Medical clamping module (20) according to claim 6, characterized in that a spatial arrangement of the photodetectors (38a, 38b, 38c, 38d), in particular a position and / or orientation of the photodetectors (38a, 38b, 38c, 38d), relative to each other is adapted to different diffraction angles of the principal wavelengths (42a, 42b, 42c, 42d) at the hose clamp (18).

8. Medical clamping module (20) according to claim 6 or 7, characterized in that the photodetectors (38a, 38b, 38c, 38d) are arranged together in one plane (48a), or that the photodetectors (38a, 38b, 38c, 38d) are arranged in at least two different planes (48a, 48b).

9. Medical clamping module (20) according to one of claims 6 to 8, characterized in that the respective distance between the photodetectors (38a, 38b, 38c, 38d) is a maximum of 1 mm.

10. Medical terminal module (20) according to one of claims 4 to 9, characterized in that the light source (34) is or has an RGB LED, preferably a combined RGB LED. BB2539P-WO-0020 : B. Braun Melsungen AG 11. Medical terminal module (20) according to one of claims 4 to 10, characterized in that the light source (34) is or has a red LED to emit the light beam (34e) in / with a red principal wavelength of 630nm ± 16nm, and / or is or has a green LED to emit the light beam (34) in / with a green principal wavelength of 520nm ± 33nm, and / or is or has a blue LED to emit the light beam (34e) in / with a blue principal wavelength of 467nm ± 25nm.

12. Medical terminal module (20) according to one of claims 4 to 11, characterized in that the light source (34) is or has an IR LED to emit the light beam (34e) in / with a wavelength of 950nm ± 42nm, preferably in the near infrared.

13. Medical pump (1), in particular transfusion pump, infusion pump, pain pump or enteral pump, in particular peristaltic pump, with a clamping module (20) according to any one of claims 4 to 12.

14. Method for detecting a medical administration system (14, 18), which is configured in particular according to one of claims 1 to 3, based on the color of a hose clamp (18) of the administration system (14, 18), after the medical administration system (14, 18) has been inserted, preferably after the hose clamp (18) has been inserted, into a medical pump (1) which is configured in particular according to claim 13, characterized by steps: Sending (S1 ) a light beam (34e) in / with principal wavelengths (42a, 42b, 42c, 42d) onto the hose clamp (18), by means of a light source (34) of the pump (1 ), in particular simultaneous sending of the principal wavelengths, Reflection (S2.1 ) of light (34r) at the hose clamp (18) with a reflection spectrum (44), Receiving (S2.2) the light (34r) reflected at the hose clamp (18) via a photodetector arrangement (38; 138; 238) of the pump (1), in particular simultaneous reception of the principal wavelengths (42a, 42b, 42c, 42d), BB2539P-WO-0020 : B. Braun Melsungen AG Separation (S3.1) of the reflected light (34r) into individual signals (46a, 46b, 46c, 46d) of the principal wavelengths, via the photodetector arrangement (38; 138; 238), in particular simultaneous separation into the individual signals, Determining (S3.2) the color by comparing the individual signals (46a, 46b, 46c, 46d) with an evaluation table stored in the medical pump (18) or Lookup table, and Identifying (S3.3) the transition system (14, 18) by its color. BB2539P-WO-0020 : B. Braun Melsungen AG

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