CN115135357A - Medical device with housing with door that transmits optical signals - Google Patents

Abstract

A medical device having a housing with a door that transmits optical signals. A medical device (1; 1') comprising a housing (10), a signal source (11) arranged at a section (100) of the housing (10), for use in accordance with the medical device (1; 1) ') control means (12) for the optical signal emitted by the signal source (11), and a door (13; 13') movably connected to the housing (10), wherein the housing (10) ) section (100) is covered by the door (13; 13') in the closed state of the door (12) and exposed in the open state of the door (13; 13'), the door (13; 13') comprising Optical device (14) adapted to transmit an optical signal at least partially through the door (13; 13') when the door (13; 13') is in the closed state, so that the optical signal of the signal source (11) is at the door (13; 13') (13; 13') can be seen by the operator when the door (13; 13') is closed and when the door (13; 13') is open.

Description

Medical device with housing with door for transmitting optical signal

describe

The present invention relates to medical devices for providing medical functions such as administering medical fluids to a patient, and to medical systems having one or more of such medical devices.

Depending on the operation of the medical device, the medical device typically emits an optical signal, in particular an optical alarm signal. With medical devices in particular, in many cases, for safety reasons, it is necessary to ensure that the operator of the medical device is always aware of the alarm signal, regardless of the arrangement of the movable parts of the medical device. The operator may be, for example, a nurse or a doctor.

US2019351138 relates to an infusion pump having a tube loading guide and configuration, the infusion pump having an illuminated light configured to indicate when the door is open whether the tube is loaded correctly or incorrectly at a corresponding loading point on the infusion pump Diodes (LEDs). Additional LEDs are positioned on the front door to indicate the pump is "on" and flow direction.

On the other hand, a need has arisen to provide medical devices with compact form factors. A compact form factor may allow multiple such medical devices to be deployed in a given space. This would allow a large number of medical devices to be used at a particular location and provide the operator with simplified access to each of the plurality of medical devices.

CN110604851 relates to a mounting device for a storage infusion pump. The mounting device includes a control box with warning lights on the front and sides of the control box. The warning light includes an L-shaped light guide. Alerts can be seen from multiple angles.

US2010207768 additionally relates to a local negative pressure system with status indication with LEDs and light guides. The light guide acts as a light duct that guides light from the LEDs mounted on the PCB to a prominent location on the device housing work piece.

It is an object of the present invention to provide a medical device that allows a compact design while providing good visibility of optical signals.

This object is achieved by means of a medical device comprising the features of claim 1 .

Thus, the medical device includes a housing, a signal source, a control device and a door. The signal source is arranged on the section of the housing. The control device is adapted to control the optical signal emitted by the signal source in accordance with the operation of the medical device. The door is movably connected to the housing. This section of the housing is covered by the door when the door is in the closed state. This section of the housing is exposed when the door is in the open state. The door includes optical means adapted to at least partially transmit the optical signal of the signal source through the door when the door is in a closed state.

Thus, the optical signal of the signal source can be seen by the operator both when the door is closed or in the closed state and when the door is open or in the open state. The optical signal of the signal source can eg be seen by the operator both when the door is closed and when the door is open. This allows the door to be designed such that it covers most of the side of the housing, eg the front panel or even the entire side, where the signal from the signal source is always visible to the operator whether the door is closed or open. For example, there is no need to provide additional areas on the front panel for signal sources other than gates. Optionally, the door may extend (eg, substantially) over the entire height and/or width of the housing. The optics of the door allow the optical signal of the signal source at the housing to propagate from the inside of the door (facing the housing) to the outside of the door (away from the housing). Therefore, there is no need to provide additional light-emitting elements, such as LEDs, at the door. For example, the LEDs at the door will be connected to the controls in the housing via a flexible PCB (flexible printed circuit board), which may increase the risk of failure. Additionally, when LEDs are used on doors to emit potentially safety-relevant signals, it may be necessary to waterproof that part of the door, as medical devices often require regular cleaning.

Optionally, the control device is adapted to detect a predetermined operational state of the medical device and to control the optical alarm signal emitted by the signal source in response to the detection of the predetermined operational state. For example, the predetermined operating state may be an error state, such as a blockage of a fluid conduit. Since the optical alarm signal can be seen by the operator whether the door is open or closed, the medical device allows to provide a high level of safety. The signal source can therefore provide an alarm display. When the door is closed, the signal source together with the optical device forms an alarm display. Alternatively or additionally, the predetermined operational state may be an enabled state or a disabled state; thus, a status display may be provided.

The medical device may be a pump, particularly an infusion pump for administering medical fluids to a patient. A faulty state of an infusion pump can be particularly critical and must be quickly and consistently identified by the operator. As an example, the medical device may be a syringe pump. A syringe can be inserted into the syringe pump. Thus, the housing may have a receptacle for receiving a syringe. Therein, the receptacle can be at least partially covered by the door when the door is in the closed state. The door can be opened to change the syringe. Whether the door is open or closed, the syringe pump can be adapted to pump liquid from an inserted syringe. Thus, the operator can open the door to check the syringe without interrupting the supply of medical fluid, while the optical signal of the signal source can be seen at all times.

The door may be designed such that in the closed state, the door extends the entire height (or substantially the entire height) of the housing. This can contribute to a compact design. The door can be used as a front panel.

The signal source may comprise at least one translucent element, eg at least one light guide. Alternatively or additionally, the optical device comprises at least one translucent element, eg at least one light guide. For example, light may enter a corresponding light guide at a first side and exit the light guide at a second side. The first side portion and the second side portion may be opposite to each other. The light guide allows a simple and robust design and at the same time allows efficient use of the light of the optical signal.

Optionally, at least one light guide is tapered. Thereby, the light of the optical signal can be concentrated to be more clearly seen by the operator.

The at least one light guide of the optical device may be aligned with the at least one light guide of the signal source when the door is in the closed state. This results in very little light loss between the two light guides. For example, the light guide of the optical device abuts at the light guide of the signal source when the door is closed. The two light guides may have main axes, wherein the main axes are coaxial with each other when the door is closed.

The at least one light guide of the signal source may be adapted to guide light emitted by the at least one light emitting element (eg, LED) to the at least one light guide of the optical device when the door is in the closed state. In other words, the light guide of the signal source may optically couple the light emitting element with the light guide of the optical device.

The at least one light guide of the optical device may be adapted to guide light from the at least one light guide of the signal source to the outside of the door when the door is in a closed state.

At least one side of the at least one light guide of the signal source may be overmolded from the material of the housing. This allows for simple manufacture and robust design of the medical device. Alternatively or additionally, the at least one light guide of the signal source and the housing may be connected to each other in a fluid-tight manner. This allows for thorough cleaning of the medical device without water entering the housing at the signal source. The fluid-tight connection may in particular be provided by overmolding the at least one light guide of the signal source with the material of the housing.

The at least one light guide can be made of PMMA, polycarbonate or MABS (methyl methacrylate acrylonitrile butadiene styrene), in particular MABS of the type TX-0520T. Alternatively, all light guides of the signal source and optical device may be made of one or more of these materials. These materials, especially MABS of type TX-0520T, provide good light guiding properties and are suitable for surfaces in medical devices. The housing may be made of acrylonitrile butadiene styrene (ABS) which allows bonding with the light guide material.

At least one surface of the at least one light guide may be polished, in particular mirror polished. When an optical signal passes through one or more light guides, part of the signal may be lost, eg due to absorption. The mirror-finished surfaces (eg, lateral surfaces) of the one or more light guides allow to increase the transmitted portion of the signal.

In one embodiment, the outer surface of the light guide is treated such that light exiting the light guide is diffuse. For example, at least one of the surfaces is coated with a diffusing coating or covered with a diffusing foil or the like. The outer surface refers to the surface facing the user standing in front of the infusion set, especially when the door is in the closed or open state.

At least one light guide may have a rougher outer surface than another of its outer surfaces. Rougher surfaces may be matte. The surface with increased roughness may be the surface visible to the operator. For example, the outer surface of the light guide may have an average roughness value Ra of between 4 and 10 microns, in particular 4.5 or 9.0 microns.

According to one aspect, a medical system is provided. The medical system includes a stent and at least one medical device according to any of the embodiments described herein mounted or capable of being mounted on the stent.

The medical system may include a plurality of medical devices according to any of the embodiments described herein, wherein at least one of the medical devices is an infusion pump of the syringe pump type and at least another medical device of the medical devices is a positive displacement pump type of infusion pump. Both types of infusion pumps each have similarly sized doors, while the housings may have different dimensions. By arranging the signal source on the housing and the optics on the door, it is possible to align the position where the signal light is emitted between different medical devices. This allows the operator to quickly view all of the plurality of medical devices along the line in order to check for signals, especially alarm signals.

Description of drawings

The concept based on the present invention will be described in more detail later with regard to the embodiments shown in the drawings. In the attached image:

Figure 1 shows a medical system with multiple medical devices;

2A, 2B show views of an embodiment of a medical device, which is an infusion device in the shape of a syringe pump;

Figures 3A to 3C show schematic views of the door of the infusion set according to Figure 2A;

Figure 4 shows a schematic view of several internal components of the infusion device according to Figure 2A;

Fig. 5 shows a schematic view of the outer face of the light guide of the infusion device according to Fig. 2A;

Fig. 6 shows a schematic view of the inner face of the light guide of the infusion device according to Fig. 2A; and

Figure 7 shows a view of an embodiment of a medical device, which is an infusion device in the shape of a volumetric pump.

Figure 1 shows a medical system 3 comprising a plurality of medical devices 1, 1'. The medical device 1, 1' is mounted on a support 30, which itself may for example have a seat or be fixed to a wall or the like. In the present case, each of the medical devices 1, 1' is an infusion pump. According to Figure 1, a medical system 3 comprises two different types of infusion pumps, namely a medical device 1 in the form of a syringe pump and a medical device 1' in the form of a volumetric pump. The medical system 3 can be used, for example, in a hospital.

The medical devices 1, 1' are connected to an (optional) terminal 31, which may also be referred to as a therapy manager. The terminal 31 allows the operator to control one or more of the medical devices 1, 1' A communication interface 33 may be mounted on the stand 30 to enable the medical devices 1, 1' to communicate with each other and/or with the terminal 31.

Each of the infusion pump medical devices 1, 1' is adapted to administer medical fluids to a patient. Therefore, depending on the type of medical fluid, it may be very important to enable an operator such as a nurse or a doctor to check the operational status of the medical device 1, 1'. To this end, the medical device 1, 1' provides an optical signal indicating eg an operating state (eg whether the pump is activated or deactivated) and/or an alarm. An example of providing an alarm signal is a blocked tube. This may affect or even hinder the supply of the corresponding medical fluid. Such signals are important for easy understanding and can be provided by illuminating light of a specific color at a given location on the medical device 1, 1'.

Such a signal should always be visible to the operator regardless of the position of the movable part of the respective medical device 1, 1'. In practice, an extension of the housing of the medical device may be provided which carries the signal source and protrudes so that the extension is not blocked by movable parts of the medical device. On the other hand, however, there are many situations in which a large number of medical devices are required for one patient or in one location, eg, in one treatment room. The compact form factor of the medical devices 1, 1' directly allows the use of a greater number of medical devices 1, 1' The medical devices 1, 1' shown in Figure 1 have such a compact form factor and at the same time allow the operator to identify signals regardless of the movable parts of the respective medical device 1, 1', as will be described in more detail below describe. Thereby, 10 or more medical devices 1, 1', in this example 12 medical devices 1, 1', can be mounted on the holder 30.

Figure 2A shows an embodiment of a medical device 1 of a medical system 3, ie an infusion device in the shape of a syringe pump, the medical device 1 having a housing 10 and a receiving portion 101 arranged in the housing body 10 to receive the syringe 2 in the receptacle 101 .

The syringe 2 comprises a cylindrical tube which, when the syringe 2 is mounted on the medical device 1, contains a medical liquid to be infused into a patient, eg a drug or solution for parenteral delivery. The barrel is connected (eg, via a connector) to an infusion line 32 (see FIG. 1 ) that can extend from the syringe 2 towards the patient for infusion of medical fluids to the patient.

The medical device 1 also comprises a door 13 which is movably connected to the housing, eg by means of hinges provided on the lower side of the door 13 . Therefore, the door 13 can be pivoted relative to the housing 10 as indicated by the arrows in FIG. 1 . Figure 1 shows the door 13 in a closed state, and the door can be pivoted to assume an open state (see Figure 2B). In the closed state, the receptacle 101 is covered by the door 13, and in the open state, the receptacle 101 is exposed and accessible to the operator.

In order to mount the syringe 2 on the receptacle 101 of the medical device 1, the door 13 needs to be opened first. When the door 13 is in the open state, the cylindrical tube of the syringe 2 can be seated in the receptacle 101 and mechanically connected to the housing 10 by means of the fixing means 16 . The cylindrical tube is secured within the receptacle 101 by means of the securing means 16 , eg constructed by releasable clamping elements, so that the cylindrical tube is held in place on the receptacle 101 .

The syringe 2 comprises a piston which can be pushed into the cylindrical tube in the pushing direction in order to deliver the medical fluid contained in the cylindrical tube. To this end, the infusion device 1 comprises a pusher device movably arranged on the housing 10 and connected to a drive mechanism. To perform the infusion procedure, the pusher device is then electrically actuated in the push direction to move the piston into the cylindrical tube for passing the medical fluid contained in the cylindrical tube through the infusion line 32 (see FIG. 1 ) towards the patient. A window 132 is arranged in the door 13 . This allows the operator to visually inspect the syringe 2 through the window.

As can be seen in particular in FIG. 2A , the door 13 has substantially the same height as the housing 10 , ie, in the closed state, the door 13 covers a portion of the housing 10 for substantially the entire height of the housing 10 . Thereby, a large display 130 (especially a touch screen) can be arranged on the door. Furthermore, this design of the door 13 provides a clear impression that allows the operator to monitor a large number of medical devices 1, 1' easily and quickly. In the width direction of the housing 10 , the door 13 covers more than half of the width of the housing 10 , in this example, two-thirds or more of the width of the housing 10 .

Notably, the syringe pump medical device 1 can be operated while the door 13 is open or closed. Therefore, regardless of the state of the door 13, the alarm signal and the status signal must be visible.

The medical device 1 includes an optical device 14 fixed to the door 13 . Optical device 14 transmits light through gate 13 . Optical device 14 includes several translucent elements, and optical device 14 directs light emitted by a signal source at the housing through door 13 when the door is in the closed state as shown in Figure 2A. The optical device 14 is arranged at the edge of the door 13 , currently at the upper left edge of the door 13 . The optical device 14 will be described in more detail below.

The door 13 also includes a number of status indicators 131 and an indicator for the charge level of the battery of the medical device 1, in the present case the status indicator 131 is used to indicate whether the medical device 1 is supplied with power (eg, connected to a power source). socket or power supply). The light intensity of these indicators may be much lower than that provided by the signal source and optics 14 . The door 13 serves as a front panel of the medical device 1 .

FIG. 3A is a perspective view of a portion of door 13 with optics 14 . The optical device 14 includes several translucent (especially transparent) elements. In the example according to Fig. 3A, the optical device 14 comprises a plurality of light guides 140A, 140B. The light guides 140A, 140B are inserted into the door 13 so that only the front side of the light guides 140A, 140B is visible in Figure 3A. The light guides 140A, 140B are adapted to pass optical signals through the door 13 . In other words, the light guides 140A, 140B transmit the optical signal of the signal source 11 at least partially through the door 13 . Notably, a portion of the light of each signal may be lost in the path through the light guides 140A, 140B. Optional measures to increase the transmission efficiency and improve the clear visibility of the transmitted optical signal will be further described below.

One of the light guides 140A is used to guide the alarm signal and is larger than the other light guide 140B, which is used to guide the status signal. The light guides 140A, 140B are not hollow. The light guides 140A, 140B of the optical device 14 each have a length corresponding to the thickness at the position where the light guides 140A, 140B of the door 13 are installed.

Figure 3B shows the door 13 in a partially open state, and the section 100 of the housing 10 covered by the door 13 in the closed state (see Figure 3A) is exposed and visible to the operator at an angle. As shown in FIG. 3B , the signal source 11 is arranged at the section 100 of the housing 10 . The signal source 11 is adapted to emit optical signals. The signal source 11 includes a plurality of light guides 110A, 110B having a similar (or identical) shape and arrangement to the light guides 140A, 140B of the optical device 14 .

When the door 13 is in the open state (eg, in the fully open state as shown in FIG. 2B ), the section 100 of the housing 10 is exposed. When the section 100 of the housing 10 is exposed, the display portion of the signal source 11 is directly visible to the operator. When the signal source 11 emits an optical signal, the corresponding display portion is illuminated.

When the door 13 is in the closed state as shown in FIG. 2A , the optical signal from the signal source 11 is received by the optical device 14 on the side of the door 13 facing the housing 10 and by the optical device 14 on the side of the door 13 facing away from the housing 10 fired from the side.

FIG. 3C shows the side of the door 13 facing the housing 10 when the door 13 is in the closed position. When the door 13 is in the closed position, the surfaces of the light guides 140A, 140B of the optical device 14 that face the housing 10 can be seen. In the closed position of the door 13 these surfaces of the light guides 140A, 140B are arranged adjacent to the outer surfaces of the light guides 110A, 110B of the signal source 11 .

Fig. 4 shows the components of the medical device 1, wherein parts of the housing 10 and the door 13 are not shown. In particular, FIG. 4 shows the control device 12 of the medical device 1 . The control device 12 controls the operation of the medical device 1, eg the control device 12 controls the movement of the pusher device. The control device 12 is adapted to determine the operating state of the medical device 1 and the control device 12 is adapted to determine whether the medical device 1 is in an error state. The error condition may be a blockage of a tube, such as a connected infusion line 32 .

The control device 12 includes a printed circuit board PCB 120 . On the printed circuit board 120, a plurality of light emitting elements 111A to 111D of the signal source 11 are mounted and electrically connected. In this example, each of the light emitting elements is an LED. The three light emitting elements 111A to 111C are optically coupled to the light guide 110A for the warning signal. These light-emitting elements 111A, 111B, 111C are each a monochromatic LED adapted to emit blue light, green light and red light. Thus, enabling with selective intensities can provide different signal colors through additive color mixing. For example, when an alarm is to be signaled, the red light can be illuminated by enabling only the red LED or primarily the red LED. Furthermore, the three light emitting elements 111D are optically coupled with the light guide 110B for status signals. All of these light-emitting elements 111D are green LEDs. The control device 12 is adapted to activate these light emitting elements 111D in an alternating manner (on/off) to indicate the pumping operation being performed by the medical device 1 . All (six) light emitting elements 111A to 111D are arranged along a straight line.

The light emitting elements 111A to 111D emit light mainly along the main emission direction. The light guides 110A, 110B of the signal source 11 extend along this main emission direction. As can be seen in Figure 4, when the door 13 is in the closed position, the light guides 140A, 140B of the optical device 14 at the door 13 are also arranged to extend along the main emission direction. Each light guide 140A, 140B of the optical device 14 is aligned with the light guides 110A, 110B of the signal source 11 . The light emitting elements 111A to 111D are designed to provide an optical signal with an intensity that can be seen at a distance of 4 m in an ambient room of 1600 lux.

The light guides 140A of the optical device 14 for the alarm signal (alternatively or additionally, the other light guides 140B of the optical device 14) are tapered. More precisely, the cross-sectional area of the light guide 140A decreases along the main emission direction. Thereby, light can be concentrated. By focusing the light, the signal can be seen more clearly. For example, the shape of the light guide 140A may be trapezoidal.

The light guides 140A, 140B of the optical device 14 are press fit into the through holes in the door 13 . To ensure a tight connection, ribs 141 are provided on the outer (lateral) surfaces of the light guides 140A, 140B.

The light guides 110A, 110B, 140A, 140B are made of PMMA, polycarbonate or MABS, in particular MABS of the TX-0520T (Samsung) type.

Each of the signal source 11 and the optical device 14 includes a (larger) light guide 110A, 140A for the alarm signal and three light guides 110B, 140B for the status signal.

FIG. 5 specifically shows that the light guides 110A, 110B of the signal source 11 extending within the housing 10 have an outer surface that is flush with the outer surface at said section 100 of the housing 10 . To ensure a fluid-tight enclosure of the internal electronics, the light guides 110A, 110B of the signal source 11 are overmolded with the material of the housing 11 . The housing material may be, for example, ABS. This material allows combining with the light guides 110A, 110B of the signal source 11 for waterproofing.

FIG. 5 also shows that the outer surfaces of the light guides 110A, 110B of the signal source 11 are not flat. Alternatively, the light guides 110A, 110B have an average roughness value Ra between 4 microns and 10 microns. The roughness of the light guide 110A for the alarm signal may be different from the roughness of the light guide 110B for the status signal. For example, the light guide 110A for the warning signal may have an average roughness Ra of 9.0 microns (charmille 39). The light guide 110B for the status signal may have an average roughness Ra of 4.5 microns (charmille 33). These values of surface roughness have been determined to allow a very wide viewing angle (eg, spanning 160 degrees or even 180 degrees) when the door 13 is open, while at the same time allowing a light guide relative to the optics 14 when the door 13 is closed 140A, 140B are effectively connected.

The light guides 140A, 140B of the optical device 14 may have roughness values on the outer surfaces of the light guides 140A, 140B, as described with reference to the light guides 110A, 110B of the signal source 11 . However, in the example of FIG. 2A , the foil 133 covers the front side of the door 13 and also covers the light guides 140A, 140B of the optical device 14 . Foil is matte. By providing this foil 133, the light of the optical signal is deflected. Therefore, when the door 13 is closed, the signal can also be seen at a large viewing angle.

The rough texture of the light guides 110A, 110B can be made in an injection moulding process with a corresponding tool, but can also be made by mechanical abrasion.

One or more surfaces of the light guides 110A, 110B, 140A, 140B that are not provided with rough surfaces, in particular all other surfaces, may be mirror polished. Mirror polishing one or more surfaces of the light guides 110A, 110B, 140A, 140B allows to minimize or even substantially avoid loss of light intensity. Thereby, high-efficiency signal transmission can be realized.

Figure 6 shows a view on the inner side of the light guides 110A, 110B of the signal source 11 in a disassembled state. In the assembled state, the light emitting elements 111A to 111D are arranged adjacent to these inner sides of the light guides 110A, 110B of the signal source 11 . The housing 10 forms a rib 102 between the light guide 110A for the alarm signal and the light guide 110B for the status signal. The rib 102 extends between the light emitting elements 111A to 111D (not shown in FIG. 6 ) to prevent the light for the status signal from entering the light guide 110A for the alarm signal, and to prevent the light for the alarm signal from entering the light guide 110A for the alarm signal. The light guide 110B in the status signal.

FIG. 7 shows another medical device 1' of the medical system 3, which is an infusion device with a housing 10 in the form of a volume pump. A positive displacement pump is connected to the fluid supply and provides fluid to the patient via infusion line 32 at an adjustable flow rate.

Compared to the door 13 of the medical device 1 according to Fig. 2A, the medical device 1' according to Fig. 7 has a door 13' of similar shape and size (eg the same width). In particular, the medical device 1' of Fig. 7 has a signal source 11, a control device 12 and an optical device 14 of the medical device 1 of Fig. 2A (in particular, the same as the medical device 1 of Fig. 2A). Therefore, refer to the above description.

The door 13' extends over the entire front surface of the housing 10 of the medical device 1'. The door lever 15 facilitates opening the door 13'.

Referring again to Figure 1, it now becomes apparent that the medical device 1, 1' is mounted on the holder 30 such that the optics 14 of the medical device 1, 1' are arranged in a straight line. This uniformity enables the operator of the medical system 3 to determine if an alarm is present by looking only once along the line on the signal displays of all medical devices 1, 1' (along the left edge of the door 13, 13').

The idea based on the present invention is not limited to the above-described embodiments, but can be implemented in completely different ways in completely different embodiments.

An infusion device of the type described herein can be used for different purposes, and can be used in particular to deliver medical fluids to a patient, such as, for example, pharmaceutical or nutritional fluids for enteral or parenteral delivery.

List of reference signs

1;1' medical device (e.g. infusion set)

10 Housing

100 Sections

101 Reception

102 ribs

11 Source

110A, 110B Light Guide

111A-111D Light-emitting element

12 Controls

120 printed circuit boards

13; 13’ door

130 monitors

131 Status Indicator

132 windows

133 Foil

14 Optics

140A, 140B Light Guides

141 Ribs

15 door bar

16 Fixtures

2 syringes

3 Medical System

30 brackets

31 Terminal

32 Infusion line

33 Communication interface

Claims (15)

1. A medical device (1; 1') comprising: housing (10), a signal source (11) arranged at the section (100) of the housing (10), a control device (12) for controlling the optical signal emitted by the signal source (11) in accordance with the operation of the medical device (1; 1'), and A door (13; 13'), said door (13; 13') being movably connected to said housing (10), wherein said section (100) of said housing (10) is in The door (12) is covered by the door (13; 13') in the closed state and exposed in the open state of the door (13; 13'), the door (13; 13') comprising Optical device (14) adapted to transmit said optical signal at least partially through said door (13; 13') when said door (13; 13') is in said closed state , so that the optical signal of the signal source (11) can be operated both when the door (13; 13') is in the closed state and when the door (13; 13') is in the open state see. 2. A medical device (1; 1') according to claim 1, characterized in that the control device (12) is adapted to detect a predetermined operating state of the medical device (1; 1') and adapted to An optical alarm emitted by the signal source (11) is controlled in response to detection of the predetermined operating state. 3. The medical device (1; 1') according to claim 1 or 2, characterized in that the medical device (1; 1') is an infusion pump for administering a medical fluid to a patient, wherein the A receptacle (101) for receiving a syringe (2) or an infusion line (32) is arranged at the housing (10), wherein the receptacle (101) is located in the door (13; 13') The closed state is at least partially covered by the door (13; 13'). 4 . The medical device ( 1 ; 1 ′) according to claim 1 , wherein the door ( 13 ; 13 ′) is in the closed state in the closed state of the housing ( 10 ). 5 . Extends the entire height. 5. Medical device (1; 1') according to one of the preceding claims, characterized in that the signal source (11) and/or the optical device (14) comprise at least one light guide (110A, 110B, 140A, 140B). 6. The medical device (1; 1') according to claim 5, wherein the at least one light guide (140A) is tapered. 7. The medical device (1; 1') according to claim 5 or 6, characterized in that at least one light guide (140A, 140B) of the optical device (14) is in the door (13; 13') is aligned with at least one light guide (110A, 110B) of the signal source (11) when in the closed state. 8. The medical device (1; 1') according to one of the claims 5 to 7, characterized in that at least one light guide (110A, 110B) of the signal source (11) is adapted to Said door (13; 13') in said closed state guides light emitted by at least one light emitting element (111A to 111D) to at least one light guide (140A, 140B) of said optical device (14) . 9. The medical device (1; 1') according to claim 8, characterized in that the at least one light guide (140A, 140B) of the optical device (14) is adapted to be located in the door (140A, 140B). 13; 13') guiding light from said at least one light guide (110A, 110B) of said signal source (11) to the outside of said door (13; 13') in said closed state . 10. The medical device (1; 1') according to one of the claims 5 to 9, characterized in that at least one of the at least one light guide (110A, 110B) of the signal source (11) The sides are overmoulded, in particular in a fluid-tight manner, by the material of the housing (10). 11. The medical device (1; 1') according to one of the claims 5 to 10, characterized in that the at least one light guide (110A, 110B, 140A, 140B) is made of MABS, PMMA or Made of polycarbonate. 12. The medical device (1; 1') according to one of the claims 5 to 11, characterized in that at least one surface of the at least one light guide (110A, 110B, 140A, 140B) is mirror-finished . 13. Medical device (1; 1') according to one of claims 5 to 12, characterized in that at least one light guide (110A, 110B, 140A, 140B) has an average roughness value Ra at An outer surface between 4 and 10 microns, in particular 4.5 microns. 14. A medical system (3) comprising a support (30) and at least one medical device (1; 1') according to one of the preceding claims, mounted or Can be mounted on the bracket (30). 15. The medical system (3) according to claim 14, characterized by a plurality of medical devices (1; 1') according to any one of claims 1 to 13, wherein in the medical devices At least one of the medical devices (1) is an infusion pump of the syringe pump type, and at least another medical device (1') of the medical devices is an infusion pump of the volumetric pump type.

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