Pen-like syringe device and syringe system

Abstract

The invention relates to a syringe device (2) and to a syringe system (1) with a syringe device (2). The object is to make it possible to obtain an ergonomic syringe device which allows safe handling and safe injection, and this is achieved by means of a pen-like syringe device (2) comprising a drive housing (3), a syringe receptacle (4) for receiving a syringe (17) having a syringe body (18) and having a piston (19) guided in the syringe body (18), and a manually operable button (8) for activating an electrical delivery device. The drive housing (3) has a pressure supply unit for pneumatically acting on the piston (19) and a coupling end opening (11) for connecting to an external power supply unit (24). The pressure supply unit comprises a drive channel (10) which can be connected to the piston (19) of an inserted syringe (17). The syringe device (2) has a vent channel (12) which is connected to the drive channel (10) and via an opening (13) to the environment, wherein the opening (13) is closable when the button (8) is actuated by a finger.

Description

TECHNICAL FIELD

[0001] The invention relates to a pen-like injector device and to an injector system comprising a pen-like injector device and an external power supply unit. BACKGROUND

[0002] In medicine, in particular in the field of ophthalmology, injector devices or injector systems having an injector device and an external power supply unit connected to the injector device are used for injecting or withdrawing substances in many and different fields of application. In addition to the general requirements that have to be met, such as ensuring the reliability and safety of the injection or withdrawal, the user friendliness, in particular a safe and advantageous handling, the guidance and actuation of the injector device are also important. SUMMARY

[0003] It is an object to provide an ergonomic injector device for medical use and in particular for ophthalmic purposes, in particular for introducing a fluid into a human or animal eye, and an injector system having an injector device and an external power supply unit connected to the injector device, such that the injector device can be held, guided and operated simply and safely, in particular independently of the size of the operator's hand, and substances can be injected or withdrawn, in particular into or from an eye, safely and target-oriented. Furthermore, contamination of the substances to be injected or withdrawn and / or of the eye is to be prevented.

[0004] In this context, the term injector refers to a device having an injector body (or main housing), in particular a cylindrical injector body, with an ejection device (e.g. a nozzle and / or a cannula) arranged at its front (proximal) end, and the ejection device comprises a plunger (without plunger rod) or an injector stopper movably guided in the injector body. In this context, the term injector also includes so-called blisters and cylindrical ampoules having a pierceable membrane at their front (proximal) end.

[0005] This problem is solved by a pen-like injector device having the features of claim 1 and by an injector system having the features of claim 14. Suitable embodiments and advantageous further improvements of the invention can be derived from the dependent claims.

[0006] A pen-like injector device is understood to be an essentially elongated injector device which can be held like a pen by an operator with one hand. The pen-like injector device is usually held, guided and operated by two fingers (in the following the term finger also includes the thumb), in particular between the thumb and the index finger, or by three fingers, in particular between the thumb, the index finger and the middle finger.

[0007] The pen-like injector device according to the application comprises a driver housing, an injector accommodation for receiving an injector adjacent to the driver housing, and a manually operable button for activating an electrical delivery unit, in particular for activating an electrical delivery unit arranged in the driver housing or for activating an electrical delivery unit arranged in an external power supply unit connectable to the pen-like injector device. In this case, the injector accommodation represents a front (proximal) part of the pen-like injector device and the connection housing represents a rear (distal) part of the pen-like injector device. The injector insertable into the injector accommodation has an injector body, in particular a cylindrical injector body, and a plunger or an injector stopper movably guided in the injector body. At its front (proximal) end, the injector can have a conical or cylindrical nozzle or other ejection means, such as a cannula or the like, wherein a connection, in particular a luer connection (luer lock, luer slip), can be provided on the ejection means for connecting to a hose or an injection needle.

[0008] The driver housing comprises a pressure supply unit for pneumatically applying a pressure or a negative pressure to the plunger of an injector inserted into the injector accommodation, in particular for directly or immediately applying a pressure or a negative pressure to the plunger, and a coupling connection for pneumatically and / or electrically connecting the pressure supply unit to an external power supply unit arranged at a distance from the driver housing. The power supply unit can comprise a power supply unit and / or an electrical delivery unit powered via the power supply unit. The injector device itself does not have an integrated power supply unit, such as a battery or an accumulator, and / or an electrical delivery unit.

[0009] For pneumatically applying a pressure or a negative pressure to the plunger of an injector inserted into the injector accommodation, the pressure supply unit comprises a drive channel which can be connected to the plunger of an injector inserted into the injector accommodation. In particular, the driver housing can thereby comprise a connection which can extend at least a small distance into the injector body of the inserted injector and the drive channel or a section of the drive channel extends through the connection. Furthermore, the pen-like injector device comprises a venting channel having a first end connected to the drive channel and a second end connected to the environment via an opening. The opening can be closed by the finger actuating the button when the button is actuated.

[0010] By outsourcing the power supply unit and / or the electric delivery unit, the weight of the pen-like injector device can be significantly reduced compared to injector devices with integrated power supply unit and / or electric delivery unit, making the pen-like injector device more comfortable to handle and reducing the strain on the operator's hand. In particular, it can be avoided that by arranging the electric delivery unit and / or the power supply unit in or at the driver housing, the weight distribution of the pen-like injector device is "heavy in the tail", i.e. the rear region of the pen-like injector device is too heavy compared to the front region, whereby the handling of the pen-like injector device would be disadvantageous and uncomfortable. This can be particularly the case when using large and powerful electric power delivery units and heavy electric power supply units and battery packs or accumulators. It is particularly preferred that the pen-like injector device has neither a power supply unit, in particular no battery or accumulator, nor an electric delivery unit. In this case, the electric delivery unit and its power source are integrated in an external power supply unit and this is pneumatically connected to the coupling connection of the connection housing of the pen-like injector device, for example via a hose. By outsourcing the power supply unit and the electric power delivery unit to an external power supply unit, a pen-like injector device is provided which is easy to sterilize. In particular, when the pen-like injector device needs to be cleaned or sterilized, the sensitive electric delivery unit and the power supply unit do not need to be taken into account, so that damage to the electric delivery unit and the power supply unit can be avoided.

[0011] In this context, the pen-like injector device can also be designed as a low-cost disposable component which is disposed of after one use or after a few uses. The complex sterilization of the external power supply unit is not mandatory, since it can be placed away from the pen-like injector device and thus from the patient, for example on the arm of the operator, and is covered by a sterile material, for example the operator's surgical gown or arm or wrist protection gloves. In this case, a simple sterilization of the external power supply unit after use is sufficient, and in this case, sterilization can be completely dispensed with.

[0012] The pen-like injector device is particularly useful for medical purposes, in particular for ophthalmology. For this purpose, the injector system is expediently made of sterile or sterilizable materials suitable for medical purposes, such as aluminum, stainless steel, sterilization-stable plastics, or combinations thereof, etc. This allows easy sterilization, for example by steam or X-ray or UV radiation or gamma radiation or ethylene oxide.

[0013] The pen-like syringe device according to the application provides an ergonomic syringe device which, in addition to simple and safe holding and guiding, enables simple and safe operation of the pen-like syringe device, in particular also independently of the size of the hand of the operator. The pen-like syringe device ensures safe and targeted injection of a substance or withdrawal of a substance, in particular into or from a human or animal eye. For this purpose, the pen-like syringe device can be held like a pen between the thumb and index finger or between the thumb, index finger and middle finger. The holding, guiding and operation of the pen-like syringe device can thus take place in particular close to the front end of the syringe inserted into the syringe accommodation, for example close to the cannula of the syringe which is remote from the driver housing, and thus close to the injection or ejection location, for example at the eye to be treated. This provides safe and good guiding of the pen-like syringe device or easy operation of the pen-like syringe device. It is thus possible in a simple and advantageous manner to change the position of the pen-like syringe device during the injection or withdrawal process, in particular to change the position of the tip of the cannula, for example by retracting or inserting the tip of the cannula into human or animal tissue. For example, in the field of ophthalmology, a change in the position of the pen-like syringe device or of the ejection device, such as the tip of the cannula, is required when placing a dye or perfluorocarbon or silicone bubble in the eye.

[0014] When the button is actuated, an electrical delivery unit arranged in the external power supply unit or, if applicable, an electrical delivery unit arranged in the pen-like syringe system, in particular in the driver housing, is activated, which provides a pressure or negative pressure for the pneumatic application of pressure or negative pressure to the plunger of the syringe inserted into the syringe accommodation. The button can in particular be actuated by the index finger. For the injection or withdrawal of the substance, only the force required to actuate the button needs to be applied. In comparison with conventional syringes which require manual actuation of a plunger rod connected to the plunger of the syringe, the pen-like syringe device has simple and convenient operability. In particular, no large force or strong push is required to actuate the pen-like syringe device. This makes it possible to safely hold and guide the pen-like syringe device, in particular during the injection or withdrawal. It is also conceivable that the force for actuating the button can be adjusted via a device arranged on the pen-like syringe device, for example to set a desired actuation force.

[0015] In the pen-like syringe device according to the application, in addition to the application of pressure or negative pressure to the plunger, there is no further medium connection to the plunger, for example by means of a plunger rod or by means of a hydraulic delivery medium or the like. Thus, there is no risk of possible contamination of the substance to be injected or withdrawn, which communicates with the plunger of the syringe in addition to the interior of the syringe body.

[0016] Furthermore, embodiments of the pen-like injector device, in particular by the electrical delivery unit (which can be activated via the button), apply pressure or negative pressure to the plunger of the injector inserted into the injector accommodation, so that an injection or withdrawal of the substance can be precisely metered. In particular, the electrical delivery unit can slowly build up the pressure or negative pressure, thereby preventing a sudden and uncontrolled injection or withdrawal. Furthermore, an injection can be performed in any dose (e.g. drop-wise or continuous flow), and in particular a fine dosing. This way the operator can directly adjust the dose according to the actual need, without having to set or program corresponding parameters in advance. In particular, a continuous injection is also ensured, without plunger hooking occurring in known injector devices, e.g. due to uneven siliconization of the injector and / or due to the plunger adhering to the injector body. The same applies to the withdrawal of the substance.

[0017] Pressure or negative pressure is applied to the plunger of the injector inserted into the injector accommodation of the pen-like injector device according to the application only when the opening arranged at the second end of the ventilation channel is closed. Otherwise, the drive channel is in communication with the environment via the ventilation channel. The pressure or negative pressure applied to the plunger and thus prevents or immediately terminates the movement of the plunger relative to the injector body. The design of the pen-like injector device thus ensures an immediate or instant termination of the injection or withdrawal as soon as the actuation of the button is terminated or the opening of the ventilation channel is no longer closed or not closed. The pressure or negative pressure previously acting on the plunger is immediately released via the ventilation channel. Thus, it is not possible to "continuously" or drop-wise or withdraw the substance. Furthermore, in case of an accidental or inappropriate actuation of the button, e.g. in case of an accidental touching of the button or e.g. in case of an inappropriate placement of the finger intended for actuating the button or inappropriate handling of the injector system, the opening of the ventilation channel is not closed. An unintentional or uncontrolled application of pressure or negative pressure to the plunger or an unintentional or uncontrolled injection or withdrawal is thus prevented.

[0018] In a preferred embodiment of the pen-like injector device, the opening is arranged directly on the button, e.g. on the upper side of the button or directly adjacent to the button. The opening can thus be directly closed by the finger actuating the button, in particular by the actuating finger itself, e.g. the index finger of the operator. The direct arrangement of the opening adjacent to the button corresponds to an arrangement of the opening close to the button, so that the opening can be closed by the finger operating the button, in particular the third, adjacent or foremost finger-like member (end member), when the button is actuated. The opening of the ventilation channel is thereby specifically placed in such a way that the operator has to close it when the button is properly actuated and the injector system is properly handled. The described design ensures an immediate and instant termination of the described injection or withdrawal and prevents an unintentional or uncontrolled application of pressure or negative pressure to the plunger.

[0019] In a preferred embodiment, the external power supply unit comprises an electrical delivery unit for supplying pressure or negative pressure to the pressure supply unit. Advantageously, the external power supply unit also comprises a power supply unit for the electrical delivery unit. The pen-like injector device itself does not have an electrical delivery unit or a power supply unit. The pressure supply unit supplies pressure or negative pressure by means of an electrical delivery unit arranged in the external power supply unit, which can be connected pneumatically, for example via a hose, to a coupling connection of a driver housing, which is pneumatically connected to the drive channel. The electrical delivery unit and the power supply unit are arranged in the external power supply unit such that the weight of the pen-like injector device is particularly light.

[0020] It is particularly preferred that the electrical delivery unit can be actuated via a button of the pen-like injector device, whereby actuation of the button results in the application of pressure or negative pressure to the drive channel. For this purpose, an electrical connection can be provided between the button and the electrical delivery unit or the external power supply unit. It is particularly preferred that the electrical delivery unit comprises a diaphragm pump. The plunger of the syringe inserted into the syringe accommodation is conveniently pressurized with compressed air or negative pressure relative to the atmosphere. Depending on the required pressure or negative pressure, the electrical delivery unit can also comprise several, in particular two, diaphragm pumps. The use of a diaphragm pump and the use of air as a drive medium make it possible to actuate the plunger in a particularly simple and advantageous manner. In this case, no mechanical means connected to the plunger for moving the plunger are required. The use of a diaphragm pump and the application of compressed air or negative pressure to the plunger thus eliminate the need for a complex and error-prone gear transmission between the delivery unit and the plunger. Furthermore, diaphragm pumps are very robust and insensitive to faults.

[0021] In an alternative embodiment, the pressure supply unit of the injector device can comprise an electrical delivery unit, in particular a diaphragm pump, connected to the drive channel, which is activated by actuating a button. In this case, the electrical delivery unit is integrated in the driver housing of the pen-like injector device and thus is part of the pen-like injector device. On the other hand, the power supply unit of the electrical delivery unit is arranged in an external power supply unit, to which the electrical delivery unit is electrically connected via a coupling connection. This embodiment is particularly suitable for pen-like injector devices and their intended applications, wherein, for example, when the pen-like injector device is intended to accommodate small 2.5 ml standard syringes, a small and light-weight electrical delivery unit can be used, and the weight reduction by outsourcing the power supply unit to the external power supply unit is sufficient. The described arrangement of the electrical delivery unit integrated in the pen-like injector device enables an advantageous design in terms of construction, such as a short electrical connection between the button and the electrical delivery unit and a short design of the drive channel.

[0022] Preferably, the button is arranged near the front end of the pen-like injector device or near the end of the pen-like injector device distal from the driver housing. The final arrangement of the fingers for operating the pen-like injector device at the front end of the injector, for example near the cannula attached to the injector, enables the injector system to be guided safely, in particular when the button is actuated at the same time.

[0023] In an advantageous embodiment of the pen-like injector device, the injector accommodation can comprise or use a lever pivotably connected to the driver housing, the lever being preferably connected to the driver housing by a rotary joint, the rotary joint being arranged on a rear region of the driver housing distal from the injector accommodation. By means of the lever pivotably connected to the driver housing, the injector can be inserted quickly and easily into the injector accommodation and can be removed from the injector accommodation in an advantageous manner. It is particularly preferred that the venting channel extends at least partially in the lever. Furthermore, the button and the opening can be arranged on the lever. The described embodiment provides a constructively advantageous embodiment of the pen-like injector device. For example, additional components for forming the venting channel or for supporting the button and the opening are not required.

[0024] Preferably, the injector accommodation comprises a head unit, in particular arranged on a front region of the lever. The head unit at least partially grips an injector shoulder of an injector inserted into the injector accommodation. The injector shoulder is a front (proximal) region of the injector which forms a transition region from the cylindrical injector body to the nozzle or to the connection device. In the operating state of the pen-like injector device, the injector shoulder or at least a part of the injector shoulder thus directly abuts against the head unit. It is particularly preferred that, in the operating state of the pen-like injector device, the injector inserted into the injector accommodation is clamped and fixed by the side of the driver housing facing in the direction of the injector accommodation and by the head unit. Preferably, a sealing element, in particular a sealing ring, is arranged on the side of the driver housing facing in the direction of the injector accommodation, the sealing element resting against the injector or against an injector flange of the injector, thereby providing an airtight or gas-tight connection between the injector and the driver housing. In this case, the injector flange denotes the rear (distal) end of the injector, precisely a protruding rim around the cylindrical injector body. In the described embodiment, it is in particular not required to clamp the injector flange, i.e. to fix the injector by clamping the injector flange on both sides. Due to manufacturing tolerances, in which the injector flange is usually unintentionally slightly tilted towards the front end of the injector, clamping of the injector flange on both sides often leads to damage or breakage of the injector flange.

[0025] In a preferred embodiment, the pen-like injector device, in particular the injector device housing, can comprise a temperature control unit, in particular a heating unit. The temperature control unit serves to control the temperature of the substance to be injected comprised in the inserted syringe. The temperature control unit can be arranged in particular in the lever and / or the head unit. Preferably, the substance to be injected is heated to body temperature. The tempering leads to a reduction of the viscosity of the substance to be injected, which facilitates the injection. Preferably, the temperature control unit is supplied with electrical energy via a power supply unit arranged outside the pen-like injector device.

[0026] Furthermore, the present application comprises an injector system having the pen-like injector device described above and an external power supply unit arranged at a distance from the driver housing, the external power supply unit comprising a power supply unit, in particular a battery or an accumulator, and / or an electrical delivery unit, in particular at least one diaphragm pump, and the external power supply unit can be connected or connected to the pen-like injector device via the coupling connection. Thereby, the power supply unit is also able to supply electrical power to the above-mentioned temperature control unit.

[0027] In a preferred embodiment, the external power supply unit comprises both an electrical delivery unit and a power supply unit for supplying electrical power to the electrical delivery unit and / or the temperature control unit, the pen-like injector device having neither an electrical delivery unit nor a power supply unit. In this case, the electrical delivery unit is connected to the coupling connection of the pen-like injector device via a hose, the coupling connection being in communication with the drive channel. Preferably, the electrical delivery device arranged in the external power supply unit is actuated via a button of the pen-like injector device, wherein the button and the electrical delivery device are connected via an actuation connection, which can in particular run through the lever, the driver housing, along the coupling connection and together with the hose. In particular, the actuation connection can comprise two segments which can be coupled together, a first segment running in the pen-like injector device and a second segment running between the pen-like injector device and the electrical delivery unit.

[0028] In an alternative embodiment, wherein the external power supply unit comprises only a power supply unit, the electrical delivery unit is arranged in the pen-like injector device, more precisely in the driver housing of the injector device, and is part of the pressure supply unit. In this case, the power supply unit is connected to the coupling connection via an electrical cable, the coupling connection being in communication with the electrical delivery unit.

[0029] It is particularly preferred that the external power supply unit comprises a fastening device, in particular a wristband or an arm sleeve, by means of which the external power supply unit can be fastened to the operator's arm. This allows the external power supply unit to be attached to the operator, in particular to the operator's arm, in a particularly simple manner. By arranging the external power supply unit on the operator's arm, the connection between the external power supply unit and the pen-like injector device, for example a hose or a cable, extends in such a way that it does not interfere with the operation of the pen-like injector device. Furthermore, the external power supply unit can thereby easily be covered, for example by the operator's clothing, such as the sleeves of an operating gown or an arm or wrist protection glove, etc. Sterilization of the external power supply unit after use is not necessary, or at least not mandatory. In particular, simple sterilization of the external power supply unit can be sufficient.

[0030] In a particularly preferred embodiment, the external power supply unit has a cloth dispenser, in particular a cloth dispenser for a preferred fabric cover for covering the external power supply unit. This makes it particularly easy to cover the supply unit by means of a fabric cover arranged on the external power supply unit itself.

[0031] The external power supply unit can further comprise a control unit for controlling the external power supply unit, in particular for controlling the electrical delivery unit of the external power supply unit. Furthermore or alternatively, the external power supply unit can have a display unit for displaying parameters of the injector system, in particular the status of the power supply unit and / or operating parameters of the electrical delivery unit and / or the pressure or negative pressure acting on the plunger of an injector inserted into the injector accommodation. This enables optimal control and monitoring of the external power supply unit and / or the pen-like injector device. BRIEF DESCRIPTION OF DRAWINGS

[0032] These and other features and advantages and effects of the pen-like injector system according to the present application result from the embodiments described in more detail below with reference to the drawings. The drawings show:

[0033] Figure 1 is an injector system with a pen-like injector device and an external power supply unit according to a first embodiment;

[0034] Figure 2 is a side view of the pen-like injector device of Figure 1 in an open position;

[0035] Figure 3 is a side view of the pen-like injector device of Figure 1 in a closed position with an inserted injector;

[0036] Figure 4 is a top view of the pen-like injector device of Figure 1 in a closed position with an inserted injector;

[0037] Figure 5 is a cross-sectional view along the longitudinal axis of the pen-like injector device in the closed position with an inserted syringe; Figure 1

[0038] Figure 6 is an external power supply unit of the injector system of Figure 1 without a cap;

[0039] Figure 7 is an injector system with a skizzierter Armmanschette of Figure 1 ;

[0040] Figure 8 is an injector system with a pen-like injector device and an external power supply unit according to a second embodiment;

[0041] Figure 9 is an external power supply unit of the injector system of Figure 8 ; DETAILED DESCRIPTION

[0042] Figure 1 A first embodiment example of an injector system 1 with a pen-like injector device 2 and an external power supply unit 24 which can provide a pressure or negative pressure to the pen-like injector device 2 and is connected to the pen-like injector device 2 via a hose 23 is shown. The pen-like injector device 2 is shown in Figure 2 in the open position and in Figures 3 to 5 in the closed position with an inserted syringe 17 which shows the operating state of the pen-like injector device 2. The external power supply unit 24 is shown in detail in Figure 6 .

[0043] As shown in Figures 2 to 5 ​In detail, the pen-like injector device 2 has a driver housing 3 and adjoining the driver housing 3 an injector accommodation 4 for receiving an injector 17 having an injector body 18 with an injector flange 20 arranged at a rear (distal) end and a nozzle 22 arranged at a front (proximal) end and a plunger 19 or an injector stopper movably guided in the injector body 18. The driver housing 3 thereby forms a rear (distal) portion of the pen-like injector device 2 and the injector accommodation 4 forms a front (proximal) portion of the pen-like injector device 2. The injector accommodation 4 is formed by a lever 5 connected to the driver housing 3 via a rotary joint 7, the lever 5 having a head unit 8 at an end thereof pointing away from the driver housing 3. The rotary joint 7 is arranged in a rear region of the driver housing 3. An actuation end 6 of the lever 5 protrudes beyond a rear end of the driver housing 3, such that when an operator presses the actuation end 6, the lever 5 is rotated from Figure 3 the shown closed position to Figure 2 the shown open position or upper position.

[0044] In the Figure 2 shown open position, the injector 17 can be inserted into the injector accommodation 4. The injector 17 is thereby pushed onto a connecting portion 15 arranged on a front side of the driver housing 3 facing in the direction of the injector accommodation 4 and engaging to some extent in the interior of the injector 17 or the injector body 18. A sealing ring 16 is applied to the connecting piece 15, by means of which a gas-tight connection or airtight connection exists between the connecting piece 15 and the interior of the injector 17 or the injector body 18.

[0045] In the closed state of the pen-like injector device 2, when the lever 5 is in Figure 3In the closed or lowered position shown, the head unit 9 grips the upper part of the syringe shoulder 21 located at the front (proximal) end of the syringe 17, pointing towards the operating lever 5, with the portion of the syringe shoulder 21 gripped by the head unit 9 directly abutting against the head unit 9. The syringe 17 is thus clamped by the head unit 9 and the front end of the driver housing 3, with the syringe flange 20 resting against the front end of the driver housing 3. In the described embodiment example, clamping of the syringe flange 20 does not occur; that is, no force is applied from the front edge of the syringe flange 20 toward the driver housing 3. Therefore, breakage of the syringe flange 20 due to deviations occurring in this area is avoided, particularly preventing the syringe flange 20 from slightly tilting toward the front end of the syringe 17. The driver housing 3 may also have a flange mount surrounding the syringe flange 20. Specifically, the actuator housing 3 can thus have a sealing element (not shown) on its side facing the syringe receiving portion 4, particularly a second sealing ring, which abuts against the syringe flange 20 and provides an airtight or hermetically sealed connection between the syringe flange 20 and the actuator housing 3. Figure 3 In the closed state of the pen-shaped syringe device 2 shown, the nozzle 22 of the syringe 17 protrudes beyond the front end of the head unit 9.

[0046] When an injection is to be performed (e.g., an ophthalmic injection of perfluorocarbon into a patient's eye), the syringe 17, inserted into the syringe receiver 4, is filled with the substance to be injected. The substance to be injected is positioned between the nozzle 22 and the plunger 19 in the syringe body 18 of the syringe 17. However, when removal is to be performed, the syringe 17 inserted into the syringe receiver 4 is not filled. The plunger 19 is thus initially positioned at or near the nozzle 22. The pen-shaped syringe device 2, in particular the syringe receiver 4, is configured according to the size of the syringe 17 to be inserted into the syringe receiver 4. For example, the syringe receiver 4 can be configured to receive a standard syringe known for injection or removal, particularly, for example, a 10 ml syringe for injecting perfluorocarbon.

[0047] Injection or removal is achieved by pneumatically applying pressure or negative pressure to a plunger 19 movably guided within the syringe body 18 of the syringe 17, particularly by directly applying pressure or negative pressure to the plunger 19. To apply pressure or negative pressure to the plunger 19, the actuator housing 3 has a pressure supply unit and a coupling connector 5 disposed on the lower side of the actuator housing 3. The pressure supply unit includes a drive channel 10 connected to the plunger 19 of the syringe 17 inserted into the syringe receiver 4, such as... Figure 5As shown, the drive channel 10 extends through the connection piece 15 and the driver housing 3 and is connected to the coupling connection piece 5. In particular, the drive channel 10 can be formed by one or more hose elements, not shown, which extend in the driver housing 3. As Figure 1 As shown, an external power supply unit 24, which is connected to the coupling connection piece 5 via the hose 23, can be used to apply a pressure or negative pressure to the pressure supply unit and thus to the plunger 19. The external power supply unit 24 is actuated via a button 8 arranged on the front region of the lever, which can be actuated manually by a finger, and the external power supply unit 24 is connected to the delivery unit via an actuation connection, not shown. The button 8 is actuated perpendicular to the longitudinal direction L of the pen injector device 2.

[0048] Furthermore, the pen injector device 2 comprises a venting channel 12, which has a first end connected to the drive channel 10 and a second end connected to the environment via the opening 13. As Figure 4 As shown, the opening 13 is thus arranged directly at the button 8, more precisely, the opening 13 is arranged on the side of the upper side of the lever 5 facing the driver housing 3. As Figure 5 As shown, the venting channel 12 extends in the lever 5 from the opening 13 to a connection portion 14 arranged in the rear region of the lever 5, from the connection portion 14 into the driver housing 3 and from there through the driver housing 3 to the drive channel 10. The section formed between the connection portion 14 and the drive channel 10 is thus preferably formed by a hose section, not shown, which is connected to the connection portion 14 and in particular allows the lever 5 to be rotated into the open position shown in Figure 2 Furthermore, the connection between the drive channel 10, in particular the drive channel 10 formed by a plurality of hose sections, and the venting channel 12 can be formed by a T-piece, not shown, which connects the individual hose sections.

[0049] The external power supply unit 24, which is shown in detail in Figure 6 , comprises a cuboidal housing 25, which has a cover 26 shown in Figure 1 and omitted in Figure 6 , in which an electrical delivery unit 27 for generating a pressure or negative pressure, in this case two diaphragm pumps, is arranged. Furthermore, the external power supply unit 24 comprises a power supply unit 28, in particular a battery, arranged on the housing 25. Here, the power supply unit 28 serves to supply the electrical delivery unit 27 with electrical energy and can be charged via a charging connection 29, for example a USB connection. Furthermore, the external power supply unit 24 has a coupling 30 connected to the electrical delivery unit 27, as shown in Figure 1 As shown, the external power supply unit 24 can be fluidically connected to the coupling connection piece 11 of the pen injector device 2 via the coupling 30 via the hose 23.

[0050] Figure 7 An injector system from Figure 1 is shown, whereby the electrical delivery unit 27 is attached to the wristband 32 of the sketch. For the sake of clarity only, Figure 7 all reference signs of the injector system 1 or pen injector device 2 and the external power supply unit 24 are not shown in the figures. The wristband 32 and the electrical delivery unit 27 can be covered, for example, by the clothes of the operator, in particular the sleeve of the surgical gown, when the injector system 1 is used.

[0051] Figure 8 An injector system 1 with a pen injector device 2 and an external power supply unit 24 according to a second embodiment is shown. The injector system 1 differs from the first embodiment in the design of the external power supply unit 24, which is shown in detail in Figure 9 . The pen injector device 2 corresponds to the pen injector device 2 of the first embodiment, although all reference signs of the pen injector device 2 are not shown in Figure 8 for the sake of clarity only.

[0052] The external power supply unit 24 of the second embodiment, which is shown in detail in Figure 9 , is designed as a cuff 31, which has three module receptacles 33 arranged next to each other in the circumferential direction. The electrical delivery unit 27, which is also designed as a membrane pump in this embodiment, is insertably inserted into the middle module receptacle 33. The electrical delivery unit 27 also has a coupling 30, as shown in Figure 8 , via which the external power supply unit 24 can be connected to the coupling connection 11 of the pen injector device 2 via a hose 23. A power supply unit 28, in particular a battery, for supplying the electrical delivery unit 27 with electrical energy is arranged in one of the two outer module receptacles 33. The power supply unit 28 can be charged via a charging connection 29, for example a USB connection. A cloth dispenser 34 is insertably inserted into the further module receptacle 33. A textile covering, in particular cloth, can be provided by the cloth dispenser 34 for covering the external power supply unit 24. The cloth can thus be guided, for example, around the entire cuff back to the cloth dispenser 34 and fixed there. This enables simple and quick aseptic covering of the external power supply unit 24 during use of the injector system 1.

[0053] The operation and the function of the injector system 1 are described below on the basis of an injection to be performed. Here, the injector 17, which is filled with the substance to be injected, is inserted into the injector accommodation 4 and the pen injector device 2 is in the position as shown in Figure 3The illustrated closed position for operation. In this case, the pen-like syringe device 2 has roughly the size of a human hand and is held and guided like a pen between the thumb, index finger, middle finger, wherein the index finger rests on or against the joystick 5. The external power supply unit 24 is arranged on the operator's arm via a wristband 32 or a cuff 31.

[0054] During an injection to be performed, the electrical delivery unit 27 of the external power supply unit 24 is activated by the operator's finger, here the index finger, thereby actuating the button 8. Pressure, in this case compressed air, is applied to the pressure supply unit of the pen-like syringe device 2 via the hose 23. When the pen-like syringe device 2 is operated properly or the button 8 is actuated properly, the opening 13 is automatically and forcibly closed by the finger actuating the button 8. The compressed air used as drive medium is delivered via the drive channel 10 in the direction of the plunger 19 of the syringe 17 inserted into the syringe accommodation 4. When the opening 13 connected to the drive channel 10 via the venting channel 12 is closed, pressure is applied to the plunger 19. The plunger 19 movably guided in the syringe body 18 is thereby moved in the direction of the nozzle 22, whereby the substance contained in the syringe 17 is dispensed from the nozzle 22 or a cannula attached to the syringe 17. When the opening 13 is not closed, for example when the button 8 is not actuated properly or when the actuation of the button 8 is terminated, the drive channel 10 and thus the plunger 19 is in communication with the environment. No (further) pressurization of the plunger 19 occurs since air escapes through the opening 13. When the button 8 is in the termination state, this ensures that the injection is terminated immediately, in particular without any aftereffects such as dripping, etc. It is also ensured that no injection occurs if the button 8 is not actuated correctly or in an uncontrolled manner.

[0055] In the case of taking out a substance not described in more detail, for example from the human body, wherein the plunger 19 is subjected to a negative pressure instead of a pressure, the above statements apply accordingly.

[0056] Due to the design of the injector system 1 according to the application, a simple and safe handling, guiding and operation of the pen-like injector device 2 is given, in particular independent of the size of the operator's hand, and thus a safe and targeted injection or withdrawal of the substance is given. In particular, due to the outer packaging of the power supply unit 27 and the power supply unit 28, the pen-like injector device 2 is very light and thus provides a high comfort and pleasant, effortless use of the pen-like injector device 2. The injector system 1 according to the application does not involve a risk of contamination of the substance to be injected or withdrawn, which can be present in prior art injector systems, in particular due to a plunger rod (lubrication mechanism) connected to the plunger for driving the plunger, or due to the injection (Umfüllen) of the substance to be injected or withdrawn from an external container into the injector or vice versa. The shown pen-like injector device 2 also enables an easy and quick insertion and withdrawal of the injector 17 into and from the injector accommodation 4 by means of the lever 5 rotatably hinged to the driver housing 3. In particular, a conventional standard injector (without finger flange and piston rod) can be used with the pen-like injector device 2 according to the application. The injector accommodation 4 and the connection 15 are designed according to the (standard) injector 17 to be used.

[0057] The application is not limited to the above-described embodiments. For example, the following embodiments are also possible, in which the electrical transport unit 27, in particular a diaphragm pump, is arranged in the driver housing 3 of the injector device 2 and is part of the pressure supply unit. The coupling connection 11 is here an electrical connection to the electrical transport unit 27 for electrical connection to the power supply unit 28 arranged in the external power supply unit 24. Instead of the hose 23, an electrical cable connection is used here for the power supply.

[0058] Furthermore, other designs of the external power supply unit 24 and the pen-like injector device 2 are possible, for example the arrangement of the opening 13 on the upper side of the button 8. Furthermore, it is also possible that the injector accommodation 4 is designed to be temperature-controlled, in particular heatable, for which purpose a temperature control unit is arranged in the injector device 2 and supplied with electrical energy via the power supply unit 28 or another external power supply unit, in particular a further external power supply unit arranged on the external power supply unit 24.

[0059] Furthermore, the injector accommodation 4 can also have a splinter protection, i.e. a protection against splinters in the event of damage to the injector 17. For example, the splinter protection can be formed by a plexiglass element arranged on the lever, which covers the injector 17 or into which the injector 17 is inserted. Alternatively or additionally, the injector 17 can comprise a circumferential label, in particular a label which circumferentially surrounds the injector body 18, which prevents the injector 17 from breaking into splinters or at least prevents the detachment of splinters.

[0060] Reference signs

[0061] 1 syringe system

[0062] 2 pen-shaped syringe device

[0063] 3 driver housing

[0064] 4 syringe accommodation

[0065] 5 lever

[0066] 6 actuation end

[0067] 7 rotary joint

[0068] 8 button

[0069] 9 head unit

[0070] 10 drive channel

[0071] 11 coupling connection

[0072] 12 venting channel

[0073] 13 opening

[0074] 14 connecting portion

[0075] 15 connection

[0076] 16 sealing ring

[0077] 17 syringe

[0078] 18 syringe body

[0079] 19 plunger

[0080] 20 syringe flange

[0081] 21 syringe shoulder

[0082] 22 nozzle

[0083] 23 hose

[0084] 24 external power supply unit

[0085] 25 housing

[0086] 26 cover

[0087] 27 electric delivery unit

[0088] 28 power supply unit

[0089] 29 charging connection

[0090] 30 coupling

[0091] 31 cuff

[0092] 32 wristband

[0093] 33 module receiver

[0094] 34 cloth dispenser

[0095] L longitudinal direction

Claims

1. A pen-shaped syringe device (2) for medical purposes, the pen-shaped syringe device (2) comprising a driver housing (3), a syringe receiving portion (4), and a manually operable button (8), the syringe receiving portion (4) being adjacent to the driver housing (3) for receiving a syringe (17), the syringe (17) having a syringe body (18) and a plunger (19) movably guided within the syringe body (18), the manually operable button (8) for activating an electrical delivery unit, wherein, The driver housing (3) has a pressure supply unit and a coupling connector (11), the pressure supply unit being used to pneumatically apply pressure to the plunger (19) of the syringe (17) inserted into the syringe receiver (4), the coupling connector (11) being used to pneumatically and / or electrically connect the pressure supply unit to an external power supply unit (24), the external power supply unit (24) being arranged away from the driver housing (3), the pen-shaped syringe device (2) itself not having an integrated power supply unit (28) and / or not having an electrical delivery unit (27), and the The pressure supply unit includes a drive channel (10) that can be connected to the plunger (19) of a syringe (17) into which the syringe (17) is inserted, and the pen-shaped syringe device (2) includes a vent channel (12) having a first end and a second end, the first end being connected to the drive channel (10) and the second end being connected to the environment via an opening (13) that can be closed by a finger that actuates the button (8) when the button (8) is actuated.

2. The pen-shaped syringe device (2) according to claim 1, characterized in that, The opening (13) is arranged directly on or adjacent to the button (8) and can therefore be closed directly by the finger that actuates the button (8).

3. The pen-shaped syringe device (2) according to any one of the preceding claims, characterized in that, The external power supply unit (24) includes an electrical transmission unit (27) for supplying pressure to the pressure supply unit.

4. The pen-shaped syringe device (2) according to claim 3, characterized in that, The start-up of the electrical transmission unit (27) is achieved by actuating the button (8).

5. The pen-shaped syringe device (2) according to claim 4, characterized in that, The electrical transmission unit (27) includes a diaphragm pump.

6. The pen-shaped syringe device (2) according to claim 1 or 2, characterized in that, The pressure supply unit includes an electrical delivery unit (27) connected to the drive channel (10). The electrical delivery unit (27) is activated by actuating the button (8) and pressure is applied to the drive channel (10).

7. The pen-shaped syringe device (2) according to claim 1, characterized in that, The button (8) is located near the front end of the pen-shaped syringe device (2) or near the end of the pen-shaped syringe device (2) away from the driver housing (3).

8. The pen-shaped syringe device (2) according to claim 1, characterized in that, The syringe housing (4) includes a lever (5) which is pivotally connected to the driver housing (3).

9. The pen-shaped syringe device (2) according to claim 8, characterized in that, The ventilation channel (12) extends at least partially in the lever (5) and / or the button (8), and the opening (13) is arranged on the lever (5).

10. The pen-shaped syringe device (2) according to claim 1, characterized in that, The syringe receiving portion (4) includes a head unit (9) that at least partially holds the syringe shoulder (21) of the syringe (17) inserted into the syringe receiving portion (4), and at least a portion of the syringe shoulder (21) directly abuts against the head unit (9) in the operating state of the pen-shaped syringe device (2).

11. The pen-shaped syringe device (2) according to claim 10, characterized in that, In the operating state of the pen-shaped syringe device (2), the syringe (17) inserted into the syringe receiving part (4) is clamped and fixed by the side of the driver housing (3) facing the syringe receiving part (4) and the head unit (9).

12. The pen-shaped syringe device (2) according to claim 1, characterized in that, The pen-shaped syringe device (2) has a temperature control unit for controlling the temperature of the substance contained in the inserted syringe (17).

13. The pen-shaped syringe device (2) according to claim 1, characterized in that, The syringe (17) is inserted into the syringe receiving portion (4), the syringe (17) including a syringe body (18) and a plunger (19) movably guided in the syringe body (18).

14. A syringe system (1) comprising a pen-shaped syringe device (2) and an external power supply unit (24), the pen-shaped syringe device (2) being used for medical purposes, the external power supply unit (24) being arranged remotely from the pen-shaped syringe device (2), the external power supply unit (24) comprising a power supply unit (28) and / or an electrical delivery unit (27), wherein, The syringe device (2) includes a driver housing (3), a syringe receiving portion (4), and a manually operable button (8). The syringe receiving portion (4) is adjacent to the driver housing (3) for receiving a syringe (17). The syringe (17) has a syringe body (18) and a plunger (19) movably guided within the syringe body (18). The manually operable button (8) is used to activate an electrical delivery unit (27). The driver housing (3) has a pressure supply unit and a coupling connector (11). The pressure supply unit is used to pneumatically apply pressure to the plunger (19) of the syringe (17) inserted into the syringe receiving portion (4). The coupling connector (11) is used to pneumatically connect the pressure supply unit to the syringe receiving portion (4). / or electrically connected to the external power supply unit (24), wherein the pen-shaped syringe device (2) itself does not have an integrated power supply unit (28) and / or does not have an electrical delivery unit (27), and the pressure supply unit includes a drive channel (10) that can be connected to a plunger (19) of a syringe (17) inserted into the syringe housing (4), and the pen-shaped syringe device (2) has a vent channel (12) having a first end and a second end, the first end being connected to the drive channel (10), and the second end being connected to the environment through an opening (13), wherein the opening (13) can be closed by a finger that actuates the button (8) when the button (8) is actuated.

15. The syringe system (1) according to claim 14, wherein, The pen-shaped syringe device (2) is formed according to any one of claims 1 to 13.

16. The syringe system (1) according to claim 14 or 15, characterized in that, The external power supply unit (24) includes an electrical delivery unit (27) which is connected to the button (8) of the pen-shaped syringe device (2) via an actuation connector.

17. The syringe system (1) according to claim 14, characterized in that, The external power supply unit (24) includes a fastening device that allows it to be fastened to the operator's arm.

18. The syringe system (1) according to claim 14, characterized in that, The external power supply unit (24) includes a towel dispenser (34).

19. The syringe system (1) according to claim 14, characterized in that, The external power supply unit (24) has a control unit for controlling the external power supply unit (24).

20. The syringe system (1) according to claim 14, characterized in that, The external power supply unit (24) has a display unit for displaying parameters of the syringe system (1), which are the status of the power supply unit (28) and / or the operating parameters of the electrical delivery unit (27) and / or the pressure acting on the plunger (19) of the syringe (17) inserted into the syringe receiver (4).

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