Modular trochoidal drug pump device and drive unit

Abstract

The present invention provides a modular trochoidal drug pump device, a drive unit for the modular trochoidal drug pump device, a dosing set including the modular trochoidal drug pump device, and a drug delivery system having the modular trochoidal drug pump device and the drive unit thereof, thereby achieving high accuracy, user-friendly application, adaptability of application range, improved patient management and safety, and increased sustainability.

Description

Technical Field

[0001] The present invention relates to a modular trochoid-type drug pump device, a driving device for a modular trochoid-type drug pump device, an administration set including the modular trochoid-type drug pump device, and a drug administration system having the modular trochoid-type drug pump device and this driving device. These devices enable high precision, user-friendly application, adaptability of the application range, patient management and safety, and improvement of sustainability.

Background Art

[0002] U.S. Patent Application Publication No. 2019 / 0085843 describes a rotary pump-driven drug administration device, but it does not have a modular structure, the pump unit is not designed to be removably coupled, and it cannot be separated from the driving device. U.S. Patent Application Publication No. 2021 / 0353854 describes a drug delivery device, but it is not adapted to operate with a trochoid-type pump unit. U.S. Patent Application Publication No. 2006 / 0271020 describes a portable drug delivery device including a detachable and replaceable administration or dosing element based on the peristaltic transport principle.

[0003] [Background of the Invention] An infusion pump is a device used to deliver drugs into a patient's body. Infusion pumps are usually classified as stationary, portable, and home use. Since these pumps have different configurations, there are a number of dedicated pumps.

[0004] Trochoid-type pump devices are known in pump applications and are described, for example, in U.S. Patent No. 4,137,024 which describes a rotary piston mechanism such as a compressor and an expansion engine, and in Japanese Patent Application Laid-Open No. 62-17322 which describes a rotary piston-type compressor. Trochoid-type pump devices are also known in pump applications for refrigerators, as described in U.S. Patent No. 6,520,754 which describes a compressor for a household refrigerator.

[0005] Trochoidal pump devices for medical use are also known, for example, from International Publication No. 2019 / 057570, which describes rotary pumps used in drug delivery devices.

[0006] The objective is to overcome the limitations of conventional technologies and provide a modular trochoidal drug pump device and its drive unit, a dosing set including this modular trochoidal drug pump device, and a drug delivery system. These devices enable improved high precision, user-friendly application, adaptability of application range, patient management and safety, and sustainability. [Overview of the project]

[0007] The present invention provides a modular trochoidal drug pump device, a drive unit thereof, a dosing set including a modular trochoidal drug delivery device, and a dosing system according to an independent claim, further embodiments of which are included in dependent claims.

[0008] According to one embodiment, a drug pump drive device is provided for controlling and driving a drug trochoidal drug pump device having a pump body and a pump rotor rotatable within the pump body, including a drive input interface. The drug pump drive device includes a housing; a bayed receptacle recessed in the housing to detachably receive the pump body of a trochoidal pump device connected to the drug pump drive device; an output drive interface for detachably receiving the input drive interface of the trochoidal drug pump device and driving the pump rotor; a drive unit disposed within the housing to rotatably drive the pump rotor of the trochoidal drug pump device via the output drive interface; and a control unit for controlling the drive unit to drive the output drive interface based on a given dosing signal.

[0009] Thus, the drug pump drive unit can be provided as a reusable infusion pump device. The receptacle can be fitted with a keying mechanism to match the shape of the modular trochoidal drug pump device, thus preventing misuse of the modular trochoidal drug pump device and the drug pump drive unit. The drug pump drive unit is adaptable and can be used as a basic module. The drug pump drive unit can be combined as a pump module with a disposable modular trochoidal drug pump device, and the pump module can be detachably or permanently connected to the main drug container or reservoir. The modular trochoidal drug pump device can be designed as a single-use device or a device with a limited number of uses. As a basic module, the drug pump drive unit can include all reusable components, such as a motor / gear unit, control unit, display unit, power supply and safety functions, sensors, patient identification unit, drug identification unit, user safety functions, locking mechanism, and logic. The drug pump drive unit can operate in conjunction with various modular trochoidal drug pump devices, which can be selected based on application, fluid to be administered, safety requirements, and administration rate.

[0010] According to one embodiment, the output drive interface includes a coupling having an engagement shape for receiving a corresponding opposing coupling of the input drive interface in order to couple at a plurality of defined rotational positions of the pump rotor of a trochoidal medical pump device.

[0011] In this way, the defined rotational position of the pump rotor relative to the pump body and housing can be recognized. Rotational position information can be transmitted through the interaction shape between the drive unit, represented by the drive engine motor, and the gears. When the repeating symmetry of the rotor shape in a trochoidal medical pump device corresponds to a defined number of equidistant rotational positions, the rotational position of the rotor within the pump housing can be estimated from the rotational position of the output drive interface.

[0012] According to one embodiment, the drug pump drive device includes a position receiving sensor for receiving the rotational position of the pump rotor.

[0013] In this way, the rotational position of the pump rotor within the pump housing or pump chamber can be determined regardless of the rotational position of the output drive interface. The position receiving sensor senses the corresponding information provided, for example, by a position signal generator on a trochoidal drug pump device. Because trochoidal pumps have nonlinear drive characteristics, the rotational position of the rotor within the housing can be useful in determining and controlling the dispensing rate when the output drive interface, and consequently the rotor within the pump, rotates, in order to provide a precise desired dispensing rate. This may also include sensing the position of the drive shaft, as long as the relative rotational positions of the drive shaft and the pump rotor are known.

[0014] According to one embodiment, the position receiving sensor is configured to receive at least one of an optical signal, an induction signal, a resistance signal, and a capacitance signal that represents the rotational position of the pump rotor within the pump body of a trochoidal drug pump device.

[0015] Thus, a position sensor can be provided to receive the position of the pump rotor, and this position sensor can receive information by contact or non-contact. This sensor may be a path sensor that reads optical patterns such as laser or reflective patterns, inductive or capacitive coupling, or resistance patterns on a trochoidal drug pump device. Alternatively, this sensor may be a receiver that receives position information actively transmitted from a trochoidal drug pump device. Other sensing principles, such as Hall effect sensors and mechanical trigger systems (e.g., cams with microswitches), can also be used.

[0016] According to one embodiment, the drug pump drive device includes a locking mechanism for locking the trochoidal drug pump device within the pump drive device during drive operation.

[0017] In this way, it is possible to prevent the trochoidal drug pump device from unintentionally detaching from the drug pump drive during the operation of the drug pump drive. This can be achieved by a mechanical lock or a logic lock that can lock the release button. The operation may include periods of operation and pauses that must be maintained for medical reasons, or delay periods after administration.

[0018] According to one embodiment, the drug pump drive device includes an access cover configured to securely cover the trochoidal drug pump device and to release the drive operation.

[0019] Thus, access to the trochoidal drug pump device may be restricted to prevent unintended dislodgement of the trochoidal drug pump device or other impacts to the trochoidal drug pump device. An access cover can hold the trochoidal drug pump device in place. The access cover may also include a locking mechanism and logic that can shut down the drive control trigger when the access cover is opened. At least one of the locking mechanisms of the trochoidal drug pump device and the access cover is designed to prevent misuse and can only be released with authorization, for example, permission from a healthcare professional and / or the patient. When the unlock is activated, the drive control is configured to move the drive unit to a taut state relative to the coupled trochoidal drug pump device, release the locking mechanism of the trochoidal drug pump device, and release the locking mechanism of the access cover. This can also be adjusted by controlling the drug pump drive unit. First, the trochoidal drug pump unit to which the drive unit is connected is de-tensioned, then the locking mechanism of the trochoidal drug pump unit is released, and finally the locking mechanism of the access cover is released, allowing the modular trochoidal drug pump unit to be removed without causing unintended consequences.

[0020] According to one embodiment, the drug pump drive device includes a rechargeable energy storage device configured to supply operating energy to a drive unit and a control unit.

[0021] Thus, the drug pump drive unit can be provided as a wearable unit that enhances patient independence. The energy storage device can be a replaceable battery to extend operating time, or a replaceable or fixed rechargeable battery from a sustainability perspective.

[0022] According to one embodiment, the drug pump drive device includes a wireless charging interface operably connected to a rechargeable energy storage device.

[0023] Thus, energy storage devices such as rechargeable batteries can be charged by placing the device near a wirelessly operated charging device. The drug pump drive device can be designed as a sealed device, can operate even under harsh environmental conditions, and can be easily disinfected or sterilized.

[0024] According to one embodiment, the drug pump drive device is operably connected to a control unit and includes a drug data interface for exchanging administration data with the drug pump drive device.

[0025] Thus, the intended administration rate can be transmitted, for example, wirelessly to the control unit of the drug pump drive device. Furthermore, the actual administration rate can be transmitted from the drug pump drive device to an information system, such as a hospital information system. Not only can dosage information be transferred to the control unit for controlling the dosage, but dosage information can also be transferred from the control unit for monitoring the dosage. In addition, an internal memory device for storing administration data can be provided, and the data to be transmitted can be buffered or archived. By wirelessly transmitting and receiving data to and from the drug pump drive device, the drug pump drive device can be sealed for disinfection and sterilization purposes.

[0026] According to one embodiment, the drug pump drive device includes a sealed user interface.

[0027] In this way, user interaction can also be executed while maintaining the drug pump driving device in a sealed state. For this purpose, the drug pump driving device may be provided with, for example, a touch screen user interface and capacitive and / or inductive buttons.

[0028] According to one embodiment, the drug pump driving device includes a tag reader configured to read a tag on a drug reservoir fixedly connected to a trochoid type drug pump device.

[0029] In this way, the drug pump driving device can read the corresponding tag on the trochoid type drug pump device or the drug contained therein, thereby identifying the liquid contained in the container and / or the type of the trochoid type drug pump device, and the control unit of the drug pump driving device can control the driving unit of the drug pump driving device accordingly.

[0030] According to one embodiment, the drug pump driving device includes a patient identifier reader configured to read a patient identifier and start the operation of the driving unit when the patient is identified.

[0031] In this way, the drug pump driving device can read the corresponding identifier of the patient (such as a tag, label, or even the patient's fingerprint or iris, etc.), thereby identifying the patient to confirm the correct assignment of the dosage or the type of drug, etc. The drug pump driving device can correlate the read patient identification information with the read identification information of the trochoid type drug pump device or the liquid in the container. In this way, the mismatch between the drug and the patient and / or the type of the trochoid type drug pump device can be avoided, and the control unit of the drug pump driving device can control the driving unit of the drug pump driving device accordingly. Thereby, the safety of drug administration to particularly vulnerable patients can be significantly improved.

[0032] According to one embodiment, the drug pump drive device includes a healthcare professional identification reader configured to read a healthcare professional identifier and monitor the operation of the drive unit based on the identification of the healthcare professional.

[0033] Thus, the drug pump drive unit can read the corresponding identifier of a healthcare worker (such as a tag, label, or even the healthcare worker's fingerprint or iris), thereby identifying the healthcare worker and monitoring handling and operation based on the identification of the healthcare worker. The drug pump drive unit can correlate the read healthcare worker identification information with the read identification information of the liquid in the trochoidal drug pump unit or container. In this way, incorrect operation selection of the trochoidal drug pump unit by healthcare workers can be avoided, or at least tracked. This significantly improves the safety of drug administration, especially for vulnerable patients.

[0034] According to one embodiment, the drug pump drive device further includes a first receiving conduit for receiving an inflow conduit connected to the inlet port of a trochoidal drug pump device, and a second receiving conduit for receiving an outflow conduit connected to the outlet port of the trochoidal drug pump device, wherein the first and second receiving conduits are connected to opposite sides of the receptacle that cross the rotation axis of the output drive interface, and at least one of the first and second receiving conduits is offset from the centerline of the receptacle and the rotation axis of the output drive interface.

[0035] In this way, it is possible to avoid setting the trochoidal drug pump device in the wrong orientation. The asymmetrical structure of the trochoidal drug pump device can also be used to provide an asymmetrical receiving region that includes the receptacle and both conduits, where one conduit is connected to one side of the receptacle and the other conduit is connected to the other side of the receptacle, so that the conduit connected to the trochoidal drug pump device can be received into the respective conduit when it is received by the receptacle.

[0036] According to one embodiment, a trochoidal drug pump device is provided that is coupled to a drug pump drive device. For example, as described above, the trochoidal drug pump device includes a pump body whose external shape is adapted to be received by a receptacle recessed in the housing of the drug pump drive device, an inlet port for introducing the drug to be administered, an outlet port for administering the drug, a pump rotor having a convex triangular cylindrical shape and tracing an eccentric trajectory when rotating within the pump body, and an input drive interface coupled to the pump rotor and configured to be detachably coupled to a corresponding output drive interface of the drug pump drive device, wherein the pump rotor has three equidistant vertices. The two vertices are connected by a convex curve, and the pump body has a pump chamber, the pump chamber has a first lobe that forms a first inner wall portion of the pump volume of the pump chamber, including a first inlet and a first outlet, the first inlet is in fluid communication with the inlet port, and the first outlet is in fluid communication with the outlet port, the pump rotor rotates eccentrically so that at least three different parts of the rotor are in permanent seal contact with the first inner wall portion of the first lobe, thus forming a first suction volume that is in fluid communication with the first inlet and a first discharge volume that is in fluid communication with the first outlet when rotating.

[0037] Thus, a modular trochoidal drug pump device can be provided that is interchangeably coupled to a drug pump drive device, such as the drug pump drive device described above. The combination of a convex triangular cylindrical rotor and a trochoidal pump chamber enables a highly reliable pumping process. The convex triangular cylinder is understood as a convex triangular surface extended orthogonally to form the main body of the shape. This pump has an operating principle opposite to that of a so-called Wankel motor. Using such a pump, the dosage can be precisely set. The modular trochoidal drug pump device as a pump module is designed as a self-suction pump that can draw liquid from a reservoir located below the level of the trochoidal drug pump device. The trochoidal drug pump device can also operate as a bidirectional pump, providing the option to connect different primary packages. Because the pump module operates bidirectionally, it can be filled with a fluid cassette that can be coupled to the trochoidal drug pump device as a base module, and there is no risk of deterioration of the drug solution due to gas or air entering the reservoir. The external shape of the pump body may have an orthogonal cross-section designed to be reliably received in the corresponding receptacle or recess (bay) of the drug pump drive unit. Eccentric motion of the rotor within the pump chamber can be achieved by a planetary gear wheel or eccentric shaft, thereby allowing the rotor to rotate eccentrically while the input drive interface remains axial.

[0038] According to one embodiment, the pump chamber has a second lobe symmetrical to a first lobe, a second suction volume, and a second discharge volume, the second lobe forming a pressure bypass between the second suction volume and the second discharge volume. This bypass is realized by forming at least partially circumferential notches in the second inner wall portion, forming a pressure compensation bypass between the second discharge volume and the second suction volume when the pump rotor rotates.

[0039] Thus, even when using only one lobe in the pump, pressure increases and decreases can be compensated for. The purpose of the bypass in the second chamber region is to reduce the driving torque and reduce sealing failures caused by air pressure generated in the second chamber. Since the pressure in the second suction chamber and the second discharge chamber is compensated during rotation, there is no need to provide a second inlet and a second outlet for pressure compensation. In this way, the pump chamber can be sealed to the environment, and the intrusion of impurities from the outside can be reduced.

[0040] According to one embodiment, the pump chamber has a second lobe that forms a second inner wall portion of the pump volume of the pump chamber, including a second inlet and a second outlet, the second inlet being in fluid communication with the inlet port, the second outlet being in fluid communication with the outlet port, the pump rotor rotates eccentrically so that at least three different parts of the rotor are in permanent sealing contact with the second inner wall portion of the second lobe, thus forming a second suction volume that is in fluid communication with the second inlet and a second discharge volume that is in fluid communication with the second outlet during rotation.

[0041] Thus, a symmetrical pump geometry can be provided that offers two parallel operating pump sequences: a first lobe and a second lobe. Since the rotor is triangular and the pump chamber provides two lobes, the phase shift between the suction and discharge characteristics of the first lobe is 180° relative to the suction and discharge characteristics of the second lobe. When both pump trains are coupled together, one pump train has its maximum discharge rate when the outlet is midway between two vertices, and the other pump train has its minimum discharge rate when the third vertex passes the outlet. By providing a check valve at the outlet of each discharge chamber, backflow of fluid into the discharge chamber can be prevented. The same applies to the inlets; by providing a check valve at the inlet of each suction chamber, outflow of fluid from the suction chamber can be prevented. It should be noted that the joint between the first lobe and the second lobe, that is, the portion where the first inner wall portion and the second inner wall portion join to each other, is considered to belong to both the first lobe and the second lobe, and to both the first inner wall portion and the second inner wall portion. It should also be noted that at least three different portions of the rotor that are in permanent sealing contact with the first lobe, and at least three different portions of the rotor that are in permanent sealing contact with the second lobe, may be the contact portions between the convex curved surface and the joint (transmit) portion from the first lobe to the second lobe.

[0042] According to one embodiment, the second inlet is in fluid communication with the inlet port, and the second outlet is in fluid communication with the outlet port.

[0043] Thus, not only the first inlet but also the second inlet can be connected to a common inlet port, and both the first and second outlets are in fluid communication with the outlet port. As a result, the trochoidal drug pump device can operate both lobes in parallel while having a single inlet port and a single outlet port, and the coupling between the parallel operating lobes and their inlets and outlets is established internally.

[0044] According to one embodiment, the trochoidal drug pump device includes a position signal generator that signals the rotational position of the pump rotor inside the pump body.

[0045] Thus, the trochoidal drug pump device can signal the rotational position of the rotor relative to the pump body. The drug pump drive device can use this position information to control the dosage. Regardless of the rotational position of the output drive interface, the rotational position of the pump rotor within the pump housing or pump chamber can be determined. The position signal generator provides information regarding the rotational position of the rotor within the trochoidal drug pump device. Because trochoidal pumps have nonlinear drive characteristics, the rotational position of the rotor within the housing can help determine and control the dosage during rotation of the output drive interface and, consequently, the rotor within the pump, thereby providing the precise desired dosage.

[0046] According to one embodiment, the signal generator is configured to transmit at least one of the following signals: an optical signal, an inductive signal, a resistive signal, and a capacitive signal, which represent the rotational position of the pump rotor inside the pump body.

[0047] Thus, a position signal generator can be provided to provide the position of the pump rotor, and this position signal generator can provide information in a contact or non-contact manner. The signal generator may be a path signal generator that provides an optical pattern that can be read by a laser or reflective pattern, inductive or capacitive coupling, or resistive pattern on the trochoidal drug pump device. Alternatively, the signal generator may be an active transmitter for transmitting position information from the trochoidal drug pump device. It should also be noted that other signal generator principles, such as Hall effect signal generators and mechanical trigger signal generators (e.g., cams with microswitches), can also be used.

[0048] According to one embodiment, a trochoidal drug pump device includes a lock receptacle configured to receive a lock mechanism of the drug pump drive device during driving operation.

[0049] In this way, the trochoidal drug pump device can be securely locked to the drug pump drive unit, preventing unintended removal and separation.

[0050] According to one embodiment, at least one of the drug pump drive unit and the trochoidal drug pump unit further includes a key-keyhole interface for aligning the trochoidal drug pump unit correctly within the receptacle.

[0051] In this way, it is possible to prevent the trochoidal drug pump device from being set in the wrong orientation.

[0052] According to one embodiment, the key-keyhole interface is configured to provide mechanical coding so that only permitted or intended trochoidal drug pump devices can be operably coupled to the receptacle, which includes the pump drive unit.

[0053] According to one embodiment, the key-keyhole interface is at least one of a projection (particularly a mandrel) and a hole configured to receive a corresponding hole and projection (particularly a mandrel) of the unit to be coupled.

[0054] According to one embodiment, the key-keyhole interface is a combination of shapes that match each other and is configured to encode a group of different trochoidal drug pump devices. This group consists of accepted trochoidal drug pump devices and intended trochoidal drug pump devices.

[0055] In this way, it is ensured that only acceptable combinations of drug pump drive units and trochoidal drug pump units are coupled and used.

[0056] According to one embodiment, a dosing set is provided for supplying a drug from a reservoir to a patient. This dosing set includes the trochoidal drug pump described above, with one end of a first fluid conduit fixedly connected to an output port and the other end fixedly connected to a Luer-lock.

[0057] Thus, this administration set can be equipped with a drug pump device without requiring additional joints between the pump device and the conduit. This prevents contamination and minimizes the number of connecting joints. Furthermore, since the administration set is guaranteed not to be reused or discarded, unintentional reuse of the medical pump device can be avoided. This makes the operation of the entire administration set safer and complies with current practices regarding such operation.

[0058] According to one embodiment, the first fluid conduit has an upstream section and a flexible downstream section, the flexible downstream section being more flexible than the upstream section.

[0059] In this way, the dosing set can maintain a more secure connection to the patient. Greater flexibility means that the more flexible section has a lower bending moment, i.e., less force is required to bend it along a given length to a specific range. In other words, it is more stable with respect to bending. The flexible downstream section closer to the patient can compensate for the movement of the drug pump device and unintentional separation of the dosing set from the patient.

[0060] According to one embodiment, the first fluid conduit is made of a flexible tube having substantially constant diameter and wall thickness, and the flexible downstream section is formed by winding the flexible tube into a pre-formed spiral shape, and its shape provides higher flexibility than the non-spiral section.

[0061] In this way, not only the lateral movement of the medical pump device relative to the patient (in the direction perpendicular to the extension of the conduit) but also the vertical movement of the medical pump device relative to the patient (in the direction along the extension of the conduit) can be compensated. It should be noted that embodiments may also include those in which a low-diameter spiral winding (i.e., low flexibility) is provided in the upstream section and a large-diameter spiral winding (i.e., high flexibility) is provided in the downstream section.

[0062] According to one embodiment, the administration set further includes a second fluid conduit, one end of which is fixedly connected to an inlet port and the other end of which is fixedly connected to a connector adapted to be detachably connected to a fluid reservoir.

[0063] Thus, the administration set can include a drug pump device without providing additional joints between the pump device and the conduit to the reservoir. This prevents contamination and minimizes the number of connecting joints. Furthermore, since the administration set and the medical pump device are not reused or discarded, unintended reuse of the medical pump device can be avoided. This makes the operation of the entire administration set safer. It should also be noted that the administration set may include a drip volume section fixedly connected between the reservoir and the drug pump device.

[0064] According to one embodiment, the administration set further includes a second fluid conduit, one end of which is fixedly connected to an inlet port and the other end of which is fixedly connected to a pre-filled fluid reservoir.

[0065] In this way, a safe administration set can be provided with a minimized number of connections and entry points for impurities. The drug pump device can be adapted to the fluid in a pre-filled reservoir, and the viscosity of the fluid can be matched to the design of the drug pump device. Reuse can be avoided, which is especially important for sensitive drugs and serious diseases. The pre-filled reservoir may contain a drug of a predetermined composition. Displacement of the drug, especially the fluid and the pump can be avoided. The reservoir can be formed as a two-layer cassette, with one outer layer being a rigid cover such as a transparent plastic case, and the other inner layer being the inside of the rigid cover or case. The inner layer may be, for example, rod-shaped and flexible, especially in the form of a transparent bag, with a variable volume, and can prevent ventilation and the entry of outside air when the liquid drug is removed from the bag.

[0066] According to one embodiment, the pre-filled reservoir is pre-filled with liquid with zero gas volume.

[0067] In this way, gas inhalation can be avoided, and it can be ensured that liquid is always supplied during operation, regardless of the reservoir's fill level. Because the trochoidal drug pump device can draw up to a certain height due to its structure, the reservoir can also be positioned lower than the trochoidal drug pump device. This makes it easier for the patient to handle, especially when the drug pump device and reservoir are carried by the patient and used as a portable delivery system.

[0068] According to one embodiment, the administration set further includes a tag representing the liquid in a pre-filled reservoir, the tag being configured to be read by a tag reader of a drug pump drive unit.

[0069] Thus, the operation of a dosing set including a trochoidal drug pump device can be adjusted to suit the type of fluid or liquid in the reservoir. Some liquids have special properties that define the driving force, and since this driving force can be set based on a reading tag, not only can the drug pump be adjusted to suit the liquid, but the operation of the drug pump device (e.g., rotation speed or rate of change of rotation speed) can also be adjusted. This is particularly important when the liquid is a non-Newtonian fluid, or when it contains a non-Newtonian fluid.

[0070] According to one embodiment, a drug delivery system is provided that includes the drug pump drive device described above and the trochoidal drug pump device described above. In this system, the trochoidal drug pump device, together with the pump body, is housed in a receptacle within the housing of the drug pump drive device, and the pump body is detachably housed within the receptacle. The external shape of the pump body matches that of the receptacle so that the pump body received within the receptacle is rotatably fixed to the housing of the drug pump drive device.

[0071] Thus, a combination of a trochoidal drug pump device and its drive unit is also provided. This combination allows the trochoidal drug pump device to be replaced on top of the drive unit, while ensuring a secure connection between the trochoidal drug pump device and the drive unit during coupling. The trochoidal drug pump device can be replaced when dispensing a different fluid or liquid, thereby allowing the pump to be adapted to the liquid being administered. The trochoidal drug pump device can also be replaced after use, especially when intended for single-use. The drive unit is reusable. Because the trochoidal drug pump device allows for reproducible operation for drug administration, it provides high delivery speed accuracy. This results in higher accuracy compared to peristaltic pumps.

[0072] The above embodiments can also be combined, and it should be noted that in the combined form, synergistic technical effects and benefits exceeding the sum of the individual technical effects and benefits can be obtained. [Brief explanation of the drawing]

[0073] The present invention will be explained with reference to the following drawings. [Figure 1] A schematic top view of a trochoidal drug pump device according to an exemplary embodiment is shown. [Figure 2a] This shows a drug pump drive unit in an exemplary embodiment where the trochoidal drug pump device is not connected. [Figure 2b] An exemplary embodiment shows a drug pump drive unit with a trochoidal drug pump device already connected. [Figure 3a] This shows a drug pump drive unit in an exemplary embodiment, with the cover removed and the trochoidal drug pump device unconnected. [Figure 3B] This shows a drug pump drive unit according to an exemplary embodiment, with the cover removed and the trochoidal drug pump device in a nearly connected state. [Figure 4] A top view of a trochoidal drug pump device with the cover removed, according to an exemplary embodiment, is shown. [Figure 5] An exploded view of a trochoidal drug pump device with the cover removed, according to another exemplary embodiment, is shown. [Figure 6] A schematic top view of a trochoidal drug pump device according to another exemplary embodiment is shown. [Figure 7] An exemplary embodiment shows a trochoidal drug pump device connected to a liquid / fluid reservoir. [Figure 8] An exemplary embodiment shows a trochoidal drug pump device connected to a liquid / fluid reservoir and a trochoidal drug pump device connected to a drive unit. [Figure 9] An exemplary embodiment shows a dosing set including a fluid conduit connected to a patient and a fluid conduit connected to a liquid reservoir. Note that identical or similar reference numerals indicate identical or similar components. Exemplary embodiments of the present invention are described below with reference to these figures. [Modes for carrying out the invention]

[0074] The present invention will be described in accordance with exemplary embodiments shown in the above reference drawings and described in detail below.

[0075] Figure 1 is a top view showing a schematic configuration of a trochoidal drug pump device according to an exemplary embodiment. The trochoidal drug pump device 200 has an inlet port 201 and an outlet port 202. The inlet port 201 receives the fluid or liquid to be pumped, and the outlet port 202 discharges the fluid or liquid to be delivered. The inlet port and outlet port may have a removable coupling or may be fixedly connected to a conduit or the like. The trochoidal drug pump device 200 has a pump body 220, which may have a housing 220a and a cover 220b. The housing 220a and cover 220b define a pump chamber 225 within the pump body 220. A rotating pump rotor 230 is arranged inside the pump chamber 225. The pump rotor 230 has a triangular shape when viewed from above. In a top view, this triangle has three vertices 231, and a convex curve 232 is formed between each pair of vertices. In three dimensions, the vertices 231 are vertex lines 231a extending parallel to the rotation axis of the pump rotor 230, and the convex curve 232 is a convex surface 232a extending between the vertex lines 231a. The vertex lines 231a and the convex curve 232a are in contact with the wall portions 227a and 227b of the pump chamber 225. The vertex line 231a is always in contact with either the wall portion 227a or 227b. The pump chamber 225 has two lobes 226a and 226b. Within the pump chamber 225, the pump rotor 230 rotates, thereby forming a chamber through contact between the pump rotor 230, particularly its vertex line 231a and convex curve 232a, and the wall portions 227a and 227b of the lobes 226a and 226b. These chambers rotate with the eccentrically rotating pump rotor 230 and sequentially communicate with the inlets 221a and outlets 222a. When connected to one of the inlets 221a or to an inlet 221a, the chamber functions as a suction chamber 228a. As the chamber rotates, its volume continuously expands, and the chamber draws fluid or liquid from the inlet port 201. As it rotates, the suction chamber rotates until its fluid or liquid is away from the inlets 221a. The chamber then communicates with the outlet 222a and becomes an expelling chamber 229a.As it rotates further, the volume of the discharge chamber 229a continuously decreases, and fluid is discharged from the output 222a until the volume reaches a minimum value (which may approach zero). Simultaneously, the shape of the rotor 230 changes in the same way, and the next chamber becomes the discharge chamber 229a, which discharges the next amount of fluid in accordance with the rotation of the pump rotor 230.

[0076] Figure 2a shows the drug pump drive unit 100, including a trochoidal drug pump device 200 that has not yet been received by the receptacle 120d of the drug pump drive unit 100. The drug pump drive unit 100 has a housing 120 and a receptacle 120d for receiving the trochoidal drug pump device 200 within the housing 120. The receptacle 120d has a shape that corresponds to the outer shape 220d of the trochoidal drug pump device 200 in order to reliably receive the trochoidal drug pump device 200. This prevents rotation of the trochoidal drug pump device 200, allowing the rotor 230 in the pump body 220 to rotate properly and deliver the fluid to be pumped. When the trochoidal drug pump device 200 is received into the receptacle 120d, the input drive interface 235 of the trochoidal drug pump device 200, for example, the drive pinion, engages with the corresponding output drive interface 135 of the drug pump drive unit 100. Thus, the trochoidal drug pump device 200, in particular its rotor 230, can be driven by the drug pump drive unit 100. The housing 120 may have a conduit 121 for receiving an input port 201 of the trochoidal drug pump device 200, or a fluid conduit (not shown) connected to the input port 201. The housing 120 may have a conduit 122 for receiving an output port 202 of the trochoidal drug pump device 200, or a fluid conduit (not shown) connected to the output port 202. The receptacle 120d and / or conduits 121, 122 may be covered with a lid or access cover 165 to protect the trochoidal drug pump device 100 from contamination, unauthorized access, or unintended access. The trochoidal drug pump device 200 may be locked to the drug pump drive device 100. For this purpose, a locking mechanism 160 or locking logic may be provided, which mechanism 160 may engage with a corresponding lock shape 260 of the trochoidal drug pump device 200. The locking mechanism 160 may also be implemented by locking the access cover 165. The drug pump drive device may include a user interface 175 for user input and user output.This user interface 175 is, for example, a touchscreen, which allows the entire housing 120 to be sealed off from the environment and to be cleaned, disinfected, and / or sterilized.

[0077] Figure 2b shows how the drug pump drive unit 100 receives the trochoidal drug pump device 200 within its receptacle 120d, where the external shape 220d of the trochoidal drug pump device 200 matches the internal shape of the receptacle 120d. In this embodiment, the trochoidal drug pump device 200 cannot rotate within the receptacle 120d. Fluid conduits are not shown here but can be received within conduits 121 and 122. When the lid or access cover 160 (still open here) is closed, the trochoidal drug pump device 200 and the fluid conduits are at least partially covered and protected. Sensors and alarm devices may be provided on the access cover 165, and an alarm will be activated when the access cover is opened, allowing the person in charge or the patient to pay attention. The access cover 165 is provided with a window for inspecting the trochoidal drug pump device 200 and its operation. In particular, when the trochoidal drug pump device 200 is provided with a transparent case or cover, the pump rotor 230 inside the trochoidal drug pump device 200 can be inspected and monitored through the window of the access cover 165.

[0078] The pump device 200 and the pump drive unit 100 function as a system and complement each other in that the pump device 200 can be inserted into the bay or receptacle 120d in only a predetermined direction. This predetermined orientation prevents the reservoir side and patient side of the pump device 200 or the tubing welded to the pump device 200 from being mistakenly confused. Due to the principle of the trochoid pump, the inlet port 201 and outlet port 202 of the trochoidal drug pump device 200 are offset from the center, as shown in Figures 2a and 3b. As a result, the connected tubing or conduits 310, 340 are also offset from the center. The receptacle 120d can be adapted to receive such an asymmetrical pump device 200 and its respective conduits. The receiving conduit 121 for the first / inlet conduit and the receiving conduit 122 for the second / outlet conduit may be offset from the centerline of the receptacle 120d. Alternatively or additionally, the pump unit 200 and the pump drive unit 100 may have a key-keyhole interface to match the correct orientation of the pump unit 200 and the pump drive unit 100 relative to each other. The key-keyhole interface can also be used for coding so that only permitted or intended pump units 200 are operated by the pump drive unit 100. The key-keyhole interface may consist of projections or mandrels and holes, thereby avoiding incorrect orientation. However, the key-keyhole interface may also be a combination of matching shapes and can be coded to have a hierarchical match between the pump unit 200 and the pump drive unit 100. This allows the pump drive unit 200 to operate with a group of different but permitted pump units 200. The pump unit 200 typically cannot operate without a suitable pump drive unit 100 adapted to operate the intended pump unit 200. For efficiency and environmental reasons, the pump drive unit 200 should be designed as a multi-use device and is not typically discarded immediately. However, for hygienic reasons, the pump device 200 is usually designed as a single-use device and is discarded after its specified use. This is due not only to hygienic reasons, such as sterilization and infection avoidance, but also to reasons related to dosage accuracy.This is because the pump device 200 may be expected to lose its ability to maintain administration accuracy after operating for a certain period of time. Therefore, the system of the pump device 200 and the pump drive unit 100 is divided into a disposable part as the pump device 200 and a reusable part as the pump drive unit 100, and these are intended to operate only in combination.

[0079] Figures 3a and 3b show the drug pump drive unit 100 with its cover removed, allowing the interior to be seen. Note that this is not a normal operating condition, as the drug pump drive unit 100 is normally closed or sealed. The trochoidal drug pump unit 200 is not yet coupled to the drug pump drive unit 100. The drug pump drive unit 100 has an output drive interface 135 to which the corresponding input drive interface 235 of the trochoidal drug pump unit 200 can be coupled. Therefore, the output drive interface 135 has a coupling 135b that matches the corresponding coupling 235b of the trochoidal drug pump unit 100. This match allows the output drive interface 135 to be coupled to the input drive interface 235 only at a limited number of defined rotational positions. In certain embodiments, coupling occurs at three equidistant rotational positions of the rotor, i.e., every 120°. The trochoidal drug pump device 200 described above has a triangular rotor 230, so its rotational position repeats every 120°. As a result, the relative rotational position of the rotor 230 with respect to the output drive interface 235 is the same every 120°. The drug pump drive device 100 has a housing 120, in which a receptacle 120d is formed. The housing is shown with the cover removed to show the interior. The receptacle 120d is recessed into the drive device to receive the trochoidal drug pump device 200, as described above. The receiving conduit 121 functions to receive a first / inlet conduit, which is removable or fixedly connected to the inlet port 201. The receiving conduit 122 functions to receive a second / outlet conduit, which is removable or fixedly connected to the outlet port 202. To drive the rotor 230 of the trochoidal drug pump device 200, the drug pump drive unit 100 has an output drive interface 135 that can be driven by a drive unit 110. The control unit 140 can control the drive characteristics of the drive unit 110. Because the drive characteristics of the trochoidal drug pump device 200 are not linear, the rotational position of the rotor 230 of the trochoidal drug pump device 200 relative to the pump body 220 can be signaled by a position signal unit 250.The position signal provided by the position signal generator is read by the position signal receiving sensor 150, and based on this, the control unit 140 can control the drive unit 110. The drug pump drive unit 100 may also include a data interface 194 for exchanging information with an external data storage or data processing device. This may include storing dose data of administered drugs to monitor the amount of delivered drugs. It may also include receiving data for controlling the drive unit 110, thereby enabling remote setup and maintenance of the drug pump drive unit 100. The locking mechanism 160 described with respect to Figures 2a and 2b can be used for the above purposes. The locking mechanism of the drug pump drive unit 100 can engage with the corresponding lock shape 260 of the trochoidal drug pump device 200. The locking mechanism can release the trochoidal drug pump device 200 and remove it from the drug pump drive unit 100 only when it is not in operation. Operations here may include interruption or suspension of application. The locking mechanism 160 may also be designed to be released only with permission from, for example, a healthcare professional, physician, and / or patient. The access cover 165 can cover vulnerable parts of the trochoidal drug pump device 200. The drug pump drive may have an energy storage device 170, such as a disposable battery or a rechargeable battery. A wireless charging interface 197 for charging a reusable battery 170 may be provided within the drug pump drive 100. The user can operate the drug pump drive via a user interface 175, which may be a bidirectional user interface. Inputs may include data input via a keyboard, voice recording, or gestures. Outputs may include, for example, optical output via a screen, or acoustic output via a speaker or vibration unit. As shown in Figure 8, the drug pump drive 100 may also include a tag reader 180 that can read a tag 380 attached to the trochoidal drug pump device 100 or a reservoir 175 connected to the trochoidal drug pump device 100.The drug pump drive unit 100 may also include a patient identification reader 185 that can read patient identification information (biometric characteristics such as fingerprints or iris scans, or tags attached to the patient). This prevents the use of the wrong drug or dosage for a specific patient.

[0080] Figure 4 shows a top view of a trochoidal drug pump device 200 with the cover removed, according to an exemplary embodiment. Figure 4 shows the trochoidal drug pump device with the cover 220b and drive pinion 235 removed. As the pump rotor 230 rotates like a planetary gear wheel around a gear wheel 224 fixed to the pump body 220, the apex 231 of the pump rotor 230 follows the trochoidal shape of the pump chamber 225, particularly the right-side wall portion 227a in Figure 4. The apex line 231a seals the pump rotor 230 across the inner wall portion, forming the suction chamber 228a and the discharge chamber 229a, respectively. The fluid pumped enters the pump chamber 225 from the inlet 221a and is discharged from the pump chamber 225 from the outlet 222a. The situation shown in Figure 4 illustrates the transition process in which the suction chamber 228a becomes the discharge chamber 229a. As can be seen from the figure, immediately after one of the vertices 231 has passed the inlet 221a and closed the chamber, ending the suction phase, the preceding vertex 231 has not yet passed the outlet 222a and has not opened the chamber for fluid discharge. Note that the vertex 231 also runs along the left side of Figure 4, i.e., the opposite wall portion 227b. However, in the embodiment of Figure 4, which corresponds to the embodiment shown in Figure 1, the right lobe 226a has only one inlet 221a and one outlet 222a. The other lobe on the left side 226b has no inlet or outlet, so a vacuum is generated in the left suction chamber 228b when it rotates. At the same time, a pressure is generated in the left discharge chamber 229b when it rotates. The vacuum in chamber 228b and the overpressure in chamber 229b lead to increased friction and load on the rotor 230, so these vacuums and pressures must be avoided, respectively. Further inlets and outlets should be avoided when not used for pumping and discharge. Therefore, the pressure difference is compensated by a notch 227c provided along a specific portion of the left wall portion 227b in Figure 4. This notch bypasses the seal at the apex 231 in the inner wall portion 227b, allowing the overpressure from the discharge chamber to pass through and compensate for the vacuum in the suction chamber 228b. In this way, the pressure difference can be compensated and friction and load can be reduced. As shown in Figure 4, the notch may be formed by chamfering.The chamfer may have a rounded edge, at least on the side where the vertex line contacts the edge of the chamfer. The notch may be realized by a groove along the inner wall portion 227b, or by a bypass channel having one opening in the region of the suction chamber 228b and the other opening in the region of the discharge chamber 229b.

[0081] Figure 5 shows an exploded view of a trochoidal drug pump device with the cover 220b removed, according to another exemplary embodiment. Figure 9 shows the position of the cover 220b. The movement trajectory of the pump rotor 230 is defined by the eccentric disk 235a shown in Figure 5, which is omitted in Figure 4 for illustrative purposes. The pump rotor 230 has a sliding surface or guide surface 234a that receives the eccentric movement disk 235a of the drive pinion 235, and the eccentric movement disk 235a (forces) the pump rotor 230 to move along the eccentric trajectory. The eccentric movement disk 235a and the drive coupling 235b of the drive pinion 235 can be manufactured as a single unit. The pump rotor 230 also has a gear section 234b that meshes with the gear section 224b of the gear wheel 224 provided on the pump body 220, in particular the housing 220a, and rotates the pump rotor 230 by eccentric movement. In Figure 4, the pinion 235 and its eccentric rotating disk 235a are omitted. The design of the drive pinion 235 may be shown in Figure 5. The eccentric rotating disk 235a forces the pump rotor 230 to move along an eccentric path as the pinion 235 and its drive coupling 235b rotate around its center. The eccentric disk 235a is rotatably supported on the corresponding bearing surface 234a of the rotor 230, in particular its core 236. During eccentric rotation, the gear section 234b of the pump rotor 230 remains engaged with the gear section 224b of the gear wheel 224 of the pump body, so that the pump rotor 230 not only moves eccentrically along the eccentric path but also rotates. As a result, the apex moves along the trochoidal path of the first and second lobes 226a, 226b and the corresponding wall portions 227a, 227b. As can be seen from Figure 5, the gear wheel 224 is provided as a separate element, but has a projection 224c that engages with the detention portion 220c of the pump body, thereby fixing the gear wheel 224 to the pump body. Fixation can also be achieved by other means, such as adhesive, positive fit connection, or by integrally providing the gear wheel 224 with the pump body 225. For the remaining elements in Figure 5, please refer to the previously mentioned diagram.

[0082] The pump rotor 230 has an overmolded 237, which has larger dimensions than the pump chamber 225 with respect to the contact portion with the wall portions 227a, 227b of the pump chamber 225, thereby compressing the compressible overmolded and providing a reliable seal. These contact portions are also part of the vertex line 231a of the rotor 230 and a convex curved surface 232a that contacts the inner wall portions 227a, 227b, particularly at the transition from the first wall portion 227a of the first lobe 226a to the second wall portion 227b of the second lobe 226b.

[0083] Figure 6 is a top view showing a schematic configuration of a trochoidal drug pump device according to another exemplary embodiment. The trochoidal drug pump device 200 shown in Figure 6 is similar to the device shown in Figure 1. In addition to what has been described with respect to Figure 1, the trochoidal drug pump device 200 in Figure 6 has not only an inlet 221a and an outlet 222a on the first lobe 226a, but also an additional inlet 221b and an additional outlet 222b on the second lobe 226b. This allows the second lobe to also be used as a pump and to operate in parallel with the pump formed on the first lobe 226a. Both the first inlet 221a and the second inlet 221b can communicate fluidly with the inlet port 201. At the same time, the first outlet 222a and the second outlet 222b can communicate fluidly with the outlet port 202. Thus, both pump paths can be connected via a common inlet port 201 and a common outlet port 202. The inlet port 201 receives the fluid or liquid being pumped, and the outlet port 202 discharges the fluid or liquid being sent out. The inlet and outlet ports may have removable couplings or may be fixedly connected to a conduit or the like. The triangular pump rotor 230 moves as described above. The vertex line 231a and the convex curve 232a are in contact with the wall portions 227a and 227b of the pump chamber 225. The vertex line 231a is always in contact with either the wall portion 227a or 227b. The pump chamber 225 has two lobes 226a and 226b. Inside the pump chamber 225, the pump rotor 230 rotates, thereby forming the chamber through contact between the pump rotor 230, particularly its vertex line 231a and convex curve 232a, and the wall portions 227a and 227b of the lobes 226a and 226b. These chambers rotate with the eccentrically rotating pump rotor 230 and sequentially communicate with the first inlet 221a, the first outlet 222a, the second inlet 221b, and the second outlet 222b. When connected to the respective inlets 221a and 221b, the chambers operate as suction chambers 228a and 228b. As the chambers rotate, their volume expands continuously, and the chambers draw fluid or liquid through the inlet port 201.As it rotates, the intake chambers rotate until they are separated from their respective inlets 221a and 221b. The chambers then connect with their respective outlets 222a and 222b, becoming discharge chambers 229a and 229b. As it rotates further, the discharge chambers 229a and 229b continuously decrease in volume, discharging fluid from the outlets 222a and 222b until the volume reaches a minimum value (which may be close to zero). Simultaneously, the next shape of the rotor 230 progresses in the same manner, with the next chambers becoming discharge chambers 229a and 229b, discharging the next amount of fluid as the pump rotor 230 rotates. In Figure 6, the inflow proceeds along the dashed line and arrows, and the outflow proceeds along the dashed line.

[0084] As can be seen from Figure 6, the first suction chamber 228a has its minimum volume at the start of the suction process, while the second suction chamber 228b has its maximum volume when the suction process is almost complete. Similarly, the first discharge chamber 229a has its maximum volume at the start of the discharge process, while the second discharge chamber 229b has its minimum volume when the discharge process is almost complete. The discharge process is not linear, and interruptions occur when the peaks cross each output, resulting in a discontinuous supply with a single pump even when the pump rotor 230 rotates continuously. However, since the pump discharge process in the first lobe 226a is phase-shifted relative to the discharge process in the second lobe 226b, this interruption can be compensated for, thereby preventing interruptions at the output port 202. To prevent unintended backflow of fluid into the chambers, check valves or flow resistors (not shown in Figure 6) may be provided to avoid or reduce unintended backflow.

[0085] Figure 7 shows a trochoidal drug pump device 200 connected to a liquid / fluid reservoir, according to an exemplary embodiment. The trochoidal drug pump device is as described above with respect to Figures 1 to 6. The trochoidal drug pump device 200 connected to a liquid / fluid reservoir can be designed as a dosing set 300. A dosing set is a device used to administer a drug to a patient. Conventional dosing sets are known and may include a connection to a reservoir, a connection to a patient, and dosing equipment for setting the flow rate. The dosing set 300 includes the trochoidal drug pump device 200 and further has a first fluid conduit 310 for connecting the trochoidal drug pump device 200, in particular its output port 202, to a patient 400. Similarly, the dosing set 300 has a second fluid conduit 340 for connecting the trochoidal drug pump device 200, in particular its input port 201, to a reservoir 370. The administration set 300 shown in Figure 7 has a reservoir 370 fixedly connected to a second fluid conduit 340. The first end 341 of the second conduit 340 is fixedly connected to the input port 201 of the trochoidal drug pump device 200, and the second end 342 of the second conduit 340 is fixedly connected to the reservoir 370. This reduces the number of connections and impurities in the system. Since the reservoir 370 can be a pre-filled reservoir 375, the administration set can be used immediately in combination with the trochoidal drug pump device 200. The first conduit 310 can have its first end connected to the patient 400, and its second end 312 fixedly connected to the output port 202 of the trochoidal drug pump device 200. The trochoidal drug pump device 200 can be adapted to the fluid in the pre-filled reservoir 375. Since reservoirs are typically replenished and not discarded, the trochoidal drug pump device 200 is also discarded, preventing unintended reuse. The reservoir can be a flexible volume like a bag, and the fluid inside is gas-free. Therefore, the fluid can be drawn from the reservoir regardless of its position or outlet.Since the trochoidal drug pump device 200 is suctionable, the reservoir may be positioned below the trochoidal drug pump device 200, i.e., the trochoidal drug pump device 200 is positioned above the reservoirs 370, 375. The dosing set 300 may include a readable tag 380 containing information about the dosing set (e.g., the type of fluid, the reservoir capacity, the type of trochoidal drug pump device 200, etc.). This tag can be read by a tag reader 180 on the drive unit 100 of the trochoidal drug pump device 200, for example, as described with respect to Figure 8. The tag 380 may be an RFID device or a machine-readable optical tag, or it may be an actively transmitting tag. The tag may also include certain intelligence functions and, by connecting to a sensor that senses the parameters of the dosing set, can provide that information when the tag is read. The trochoidal drug pump device 200 has a coupling driven by the drive unit 100. This coupling is realized by the coupling portion 235 of the drive pinion, as described above, and can be coupled to the drive device 100 by the coupling portion 235.

[0086] Figure 8 shows a dosing set according to an exemplary embodiment, in which a liquid / fluid reservoir is connected and a trochoidal drug pump device is connected to a drive unit. The dosing set 300 is coupled to the drive unit 100 via the drive coupling 235 described above. The drive unit may have a tag reader 180 for reading or communicating with the tag 380. The trochoidal drug pump device 200 in this embodiment is received in a recess of the drive unit to protect the trochoidal drug pump device 200, its ports 201, 202, and further conduits 310, 340. The dosing set 300 may be locked to the drive unit 100 to prevent the reservoirs 370, 375 and the trochoidal drug pump device 200 from unintentionally separating from the drive unit.

[0087] Figure 9 shows an exemplary embodiment of a dosing set including a fluid conduit connected to a patient and a fluid conduit connected to a liquid reservoir. Figure 9 shows an embodiment of the trochoidal drug pump device described with respect to Figures 1 to 6. Dosing set 300 includes a trochoidal drug pump device 200 and further has a first fluid conduit 310 for connecting the trochoidal drug pump device 200, in particular its output port 202, to the patient 400. Similarly, dosing set 300 has a second fluid conduit 340 for connecting to the trochoidal drug pump device 200. For this purpose, the second conduit 340 has a first end 341 connected to the trochoidal drug pump device 200, in particular its input port 201. The second end 342 of the second conduit 340 can be connected to reservoirs 370, 375. This can be done via a connector 360. The reservoirs 370, 375 may be fixedly connected as described in Figure 7 above. The administration set of the first conduit 310 shown in Figure 9 has an upstream section 320 and a downstream section 330. In the upstream section 320, the second end 312 of the first conduit 310 is fixedly connected to the output port 202 of the trochoidal drug pump device 200. In the downstream section 330, the first end 311 of the first conduit 310 can be connected to the patient 400, for example, via a Luer lock device 350. The downstream section 330 in this embodiment is more flexible than the upstream section, meaning it can be bent more easily. In the illustrated embodiment, this is achieved by providing a helical winding 335, which extends the flow path length of the conduit and achieves high flexibility. However, since the helical winding 335 is not longer than other equivalent sections and does not increase the physical distance from the reservoir to the patient, it is not necessary to extend the dimensions. The spiral winding compensates not only for bending forces across the longitudinal extension but also for forces along the longitudinal extension of the first conduit. This is because the spiral winding acts like a spring. [Explanation of Symbols]

[0088] 100: Drive unit for driving a trochoidal drug pump device 110: Drive Unit 120: Housing of the drive unit 120d: Receptacle recessed in the drive unit to receive a trochoidal drug pump device. 121: Receiving conduit for the first / inflow conduit 122: Receiving conduit for the second / outflow conduit 135: Output drive interface 135b: Coupling of the output drive interface of the drive unit 140: Control unit for the drive system 150: Drive unit position receiving sensor 160: Locking mechanism of the drive unit 165: Access cover for drive unit 170: Energy storage device (rechargeable) battery for drive systems 175: User interface of the drive unit (keypad) 180: Tag reader for drive unit 185: Patient identification reader for drive unit 194: Dosage data interface for drive unit 197: Wireless charging interface for the drive unit 200: Trochoidal drug pump device 201: Inlet port of trochoidal drug pump device 202: Outlet port of trochoidal drug pump device 220: Pump body 220a: Pump body housing 220b: Pump body cover 220c: Notch for locking the pump housing / pump body 220d: External dimensions of the pump body 221a: First inlet of the pump chamber 221b: Second inlet of the pump chamber 222a: First outlet of the pump chamber 222b: Second outlet of the pump chamber 224: Gear Wheel 224b: Gear section of the gear wheel 224c: Locking protrusion on the gear wheel 225: Pump Chamber 226a: First lobe of the pump chamber 226b: Second lobe of the pump chamber 227a: First inner wall portion 227b: Second inner wall section 227c: Notch 228a: First suction volume 228b: Second intake volume 229a: First discharge volume 229b: Second discharge volume 230: Pump Rotor 231: Vertex 231a: Pump rotor apex line / apex sealing line 232: Convex curve of pump rotor / Convex curve sealing line 232a: Convex curved surface 234a: Sliding surface / guide surface / rigid rotor core of pump rotor 234b: Pump rotor gear section / Pump rotor rigid rotor core 235: Input drive interface, drive pinion 235a: Eccentric sliding disc of drive pinion 235b: Drive pinion coupling / input drive interface, drive pinion drive coupling 236: Pump rotor (rigid) rotor core 237: Pump rotor (compressible) overmolding 250: Position signal generator indicating the rotational position of the pump rotor relative to the pump housing. 260: Lock receptacle for trochoidal drug pump device 300: Dosage Set 310: First fluid conduit 311: First end of the first fluid conduit 312: Second end of the first fluid conduit 320: Upstream section of the first fluid conduit 330: (Flexible) downstream section of the first fluid conduit 335: (Flexible) spiral winding of the first fluid conduit 340: Second fluid conduit 341: First end of the second fluid conduit 342: Second end of the second fluid conduit 350: Luer lock (the (first) end of the first fluid conduit) 360: Connector at the (second) end of the second fluid conduit 370: Fluid reservoir 375: Pre-filled fluid reservoir 380: Tag for (pre-filled) fluid reservoir 400:Patient 485: Patient Identifier

Claims

1. A trochoidal drug pump device (200) according to any one of claims 9 to 11 or a drug pump drive device (100) for controlling and driving a dosing set according to any one of claims 12 to 15, wherein the drug pump drive device (100) includes a pump body (220) and a pump rotor (230) rotatable within the pump body and including a drive input interface (235), and the drug pump drive device (100) Housing (120) and A bayed receptacle (120d) is recessed in the housing to detachably receive the pump body (220) of the trochoidal drug pump device (200) connected to the drug pump drive device (100), The output drive interface (135) for detachably receiving the input drive interface (235) of the trochoidal drug pump device (200) and driving the pump rotor (230), A drive unit (110) is located within the housing (120) to rotationally drive the pump rotor (230) of the trochoidal drug pump device (200) via the output drive interface (135), The system includes a control unit (140) that controls the drive unit (110) based on a given administration signal to drive the output drive interface (135), Drug pump drive device (100).

2. The drug pump drive device (100) according to claim 1, further comprising a first receiving conduit (121) for receiving an inflow conduit connected to an inlet port (201) of the trochoidal drug pump device (200), and a second receiving conduit (122) for receiving an outflow conduit connected to an outlet port (202) of the trochoidal drug pump device (200), wherein the first receiving conduit (121) and the second receiving conduit (122) are connected to the opposite side of the receptacle (120d) that crosses the rotation axis of the output drive interface (135), and at least one of the first receiving conduit (121) and the second receiving conduit (122) is offset from the centerline of the receptacle (120d) and the rotation axis of the output drive interface (135).

3. The drug pump drive device (100) according to claim 1 or 2, further comprising a key-keyhole interface for aligning the trochoidal drug pump device (200) in the correct orientation within the receptacle (120d).

4. The drug pump drive (100) according to claim 3, wherein the key-keyhole interface is configured to provide mechanical coding so that only trochoidal drug pump devices (200) permitted or intended by this can be operably coupled to the receptacle (120d) by the drug pump drive (100).

5. The drug pump drive device (100) according to claim 3 or 4, wherein the key-keyhole interface is at least one of a projection, particularly a mandrel, and a hole, and is configured to receive the corresponding hole and projection, particularly the mandrel, of the trochoidal drug pump device (200).

6. The key-keyhole interface is a combination of matching shapes adapted to code a group of different trochoidal drug pump devices (200), the drug pump drive device (100) according to any one of claims 3 to 5, wherein the group consists of trochoidal drug pump devices (200) intended to be acceptable trochoidal drug pump devices (200).

7. The drug pump drive device according to any one of claims 1 to 6, wherein the output drive interface (135) includes a coupling (135b) having an engagement shape for receiving a corresponding opposing coupling (235b) of the input drive interface (235), thereby coupling at a plurality of defined rotational positions of the pump rotor (230) of the trochoidal medical pump device (200).

8. The drug pump drive device (100) according to any one of claims 1 to 7, wherein the drug pump drive device (100) includes a position receiving sensor (150) for receiving the rotational position of the pump rotor (230).

9. The drug pump drive device according to any one of claims 1 to 8, wherein the drug pump drive device (100) includes a locking mechanism (160) adapted to lock the trochoidal drug pump device (200) within the drug pump drive device during drive operation.

10. The drug pump drive device according to any one of claims 1 to 9, wherein the drug pump drive device (100) includes an access cover (165) configured to reliably cover the trochoidal drug pump device (200) and to release the drive operation.

11. The drug pump drive device (100) is operably connected to the control unit (140) and includes an administration data interface (194) for exchanging administration data with the drug pump drive device (100), according to any one of claims 1 to 10.

12. The drug pump drive device according to any one of claims 1 to 11, wherein the drug pump drive device (100) includes a tag reader (180) configured to read a tag on a drug reservoir fixedly connected to the trochoidal drug pump device (200).

13. The drug pump drive device (100) according to any one of claims 1 to 12, wherein the drug pump drive device (100) includes at least one of a patient identification reader (185) configured to read a patient identifier (485) and deactivate the operation of the drive unit (110) when a patient is identified, and a healthcare professional identification reader (185) configured to read a healthcare professional identifier (485) and track the operation of the drive unit (110) when a healthcare professional is identified.

14. A trochoidal drug pump device (200) coupled to a drug pump drive device (100) according to any one of claims 1 to 13, wherein the trochoidal drug pump device (200) is A pump body (220) having an outer shape (220d) adapted to be received by a receptacle (120d) recessed in the housing (120) of the drug pump drive device (100), An inlet port (201) for introducing the drug to be administered, An exit port (202) for administering medication, A pump rotor (230) having a convex triangular cylindrical shape, which traces an eccentric trajectory when rotating within the pump body, Includes an input drive interface (235) coupled to the pump rotor (230) and configured to be detachably coupled to the corresponding output drive interface (135) of the drug pump drive unit (100), The pump rotor (230) has three equidistant vertices (231), and two of each vertex are connected by a convex curve (232). The pump body (220) has a pump chamber (225), The pump chamber (225) has a first lobe (226a) that forms a first inner wall portion (227a) of the pump volume of the pump chamber (225), including a first inlet (221a) and a first outlet (222a), the first inlet (221a) is in fluid communication with the inlet port (201), the first outlet (222a) is in fluid communication with the outlet port (202), and the pump rotor (230 The ) rotates eccentrically, thereby causing at least three different portions (231, 232) of the pump rotor (230) to permanently seal in contact with the first inner wall portion (227a) of the first lobe (226a), thus forming a first suction volume (228a) that is in fluid communication with the first inlet (221a) and a first discharge volume (229a) that is in fluid communication with the first outlet (222a) during rotation. Trochoidal drug pump device (200).

15. The trochoidal drug pump device (200) according to claim 14, further comprising a key-keyhole interface for aligning the trochoidal drug pump device (200) with the correct orientation within the receptacle (120d) of the drug pump drive device (100).

16. The trochoidal drug pump device (200) according to claim 15, wherein the key-keyhole interface is configured to provide mechanical coding, thereby enabling the trochoidal drug pump device (200) to be operably coupled only to the receptacle (120d) of the intended drug pump drive device (100).

17. The trochoidal drug pump device (200) according to claim 14 or 15, wherein the key-keyhole interface is at least one of a projection, particularly a mandrel, and a hole, and is configured to receive the corresponding hole and projection, particularly a mandrel, of the drug pump drive device (100).

18. The trochoidal drug pump device (200) according to any one of claims 14 to 16, wherein the key-keyhole interface is a combination of matching shapes adapted for coding a group of different drug pump drive devices (100), the group comprising drug pump drive devices (100) intended to be used in conjunction with a particular drug pump drive device (100).

19. The trochoidal drug pump device according to any one of claims 14 to 18, wherein the pump chamber (225) has a second lobe (226b) symmetric to a first lobe (226a), a second suction volume (228b), and a second discharge volume (229b), and the second lobe (226b) forms a pressure bypass between the second suction volume (228b) and the second discharge volume (229b).

20. The trochoidal drug pump device (200) according to any one of claims 14 to 19, wherein the trochoidal drug pump device (200) includes a position signal generator (250) that signals the rotational position of the pump rotor (230) in the pump body (220).

21. A dosing set (300) for supplying a drug from a reservoir to a patient (400), wherein the dosing set (300) is A trochoidal drug pump (200) according to any one of claims 14 to 20, A first fluid conduit (310) having one end (312) fixedly connected to the output port (202) and the other end (311) fixedly connected to a Luer lock (350) is included. Administration set (300).

22. The dosing set according to claim 21, wherein the first fluid conduit (310) is made from a flexible tube having substantially constant diameter and wall thickness, and the flexible downstream section (330) is formed by a pre-formed helical winding (335) of the flexible tube, the shape of which provides greater flexibility than the non-helical portion.

23. The administration set (300) further includes a second fluid conduit (340), one end (341) of the second fluid conduit (340) fixedly connected to the inlet port (201) and the other end (342) fixedly connected to a pre-filled liquid reservoir (375), according to any one of claims 21 and 22.

24. The administration set (300) further includes a tag (380) representing the liquid in a pre-filled reservoir (375), the tag (380) being configured to be read by a tag reader (180) of the drug pump drive device (100), according to any one of claims 21 to 23.

25. A drug delivery system, said drug delivery system is A drug pump drive device (100) according to any one of claims 1 to 13, A trochoidal drug pump device (200) according to any one of claims 14 to 20, comprising: The trochoidal drug pump device (200), together with the pump body (220), is housed in the receptacle (120d) within the housing of the drug pump drive device (100), and the pump body (220) is removably received. The external shape (220d) of the pump body (220) is such that, when the pump body (220) is received within the receptacle (120d), it is fixed in the rotational direction to the housing (120) of the drug pump drive device (100). Drug administration system.

26. A drug delivery system, said drug delivery system is A trochoidal drug pump device (200) is coupled to a trochoidal drug pump drive device (100), The system includes a drug pump drive device (100) for controlling and driving the trochoidal drug pump device (200), The aforementioned drug pump drive device (100) Housing (120) and A receptacle (120d) recessed in the housing (120), Includes an output drive interface (135), The trochoidal drug pump device (200) is, A pump body (220) having an outer shape (220d) configured to be received by a receptacle (120d) recessed in the housing (120) of the drug pump drive device (100), An entry port (201) for introducing the drug to be administered, An exit port (202) for administering medication, A pump rotor (230) having a convex triangular cylindrical shape and tracing an eccentric trajectory when rotating within the pump body, The pump rotor (230) is coupled to an input drive interface (235) configured to be detachably coupled to the output drive interface (135) of the drug pump drive device (100), The pump rotor (230) has three equidistant vertices (231), and two of each vertex are connected by a convex curve (232). The pump body (220) has a pump chamber (225), The pump chamber (225) has a first lobe (226a) that forms a first inner wall portion (227a) of the pump volume of the pump chamber (225), including a first inlet (221a) and a first outlet (222a), the first inlet (221a) is in fluid communication with the inlet port (201), the first outlet (222a) is in fluid communication with the outlet port (202), and the pump rotor (23 0) rotates eccentrically, thereby causing at least three different parts (231, 232) of the pump rotor (230) to permanently seal in contact with the first inner wall portion (227a) of the first lobe (226a), thus forming a first suction volume (228a) that is in fluid communication with the first inlet (221a) and a first discharge volume (229a) that is in fluid communication with the first outlet (222a) during rotation. The receptacle (120d) recessed in the housing is configured to removably receive the pump body (220) of the trochoidal drug pump device (200) and connect to the drug pump drive device (100). The output drive interface (135) is configured to detachably receive the input drive interface (235) for driving the pump rotor (230) of the trochoidal drug pump device (200), The aforementioned drug pump drive device (100) A drive unit (110) is disposed within the housing (120) and rotates the pump rotor (230) of the trochoidal drug pump device (200) via the output drive interface (135), The system further includes a control unit (140) that controls the drive unit (110) based on a given administration signal to drive the output drive interface (135), For operation, the trochoidal drug pump device (200), together with its pump body (220), is housed in a receptacle (120d) within the housing of the drug pump drive device (100), which detachably receives the pump body (220). The external shape (220d) of the pump body (220) coincides with that of the receptacle (120d) in that, when the pump body (220) is received within the receptacle (120d), it is fixed in the rotational direction to the housing (120) of the drug pump drive device (100). Drug administration system.

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