CONTROL DEVICE FOR A BLOOD PUMP

Description

[0001] This disclosure relates to a control device for a blood pump, comprising a control unit and an energy storage unit that can be detachably connected electrically and mechanically via a plug connection. Furthermore, this disclosure relates to a blood pump device comprising the described control device.

[0002] In the field of medical technology, increased demands are placed on the safety and usability of connectors, such as those connecting an electrical battery to a control unit. Various implementations of such connectors are already known from the prior art.

[0003] For example, EP 2 941 281 A2 describes a control system for driving an implantable blood pump, comprising a first housing with electronic components configured to drive the pump and a second housing containing a battery. Both the first and second housings include several locking elements. Another example of the prior art is known from US 2016 / 022889 A1.

[0004] The objective of this disclosure is to provide a control device for a blood pump with an improved plug connection. This objective is achieved by the control device for a blood pump according to claim 1 and the blood pump device according to claim 14.

[0005] The control device comprises a control unit and an energy storage unit, which can be detachably connected electrically and mechanically via a plug connection. The plug connection for establishing a mechanical connection has a frame and a frame insertion element that can be inserted into the frame along an insertion direction. These elements are formed by a housing for the control unit and a housing for the energy storage unit. Furthermore, the frame and the frame insertion element are designed such that the frame insertion element can be inserted into the frame in two or more orientations, which differ from each other by a relative rotation between the frame and the frame insertion element about the insertion direction.Furthermore, the frame and the frame insertion element have one or more electrical coupling pairs for establishing an electrical connection between the control unit and the energy storage unit, and the one or more electrical coupling pairs are arranged in such a way that an electrical connection is possible in all orientations.

[0006] The development of the described control device arose from the realization that it can be advantageous for detachably connectable units of a control device to be connected via a plug connection formed by the housing of each unit. This generally results in the control device having compact housing dimensions when connected. Connecting the two units using, for example, a cable would not lead to such a compact design.

[0007] The described plug-in connection of the control unit is typically advantageous for enabling a safe replacement of the energy storage device. This is achieved in particular by providing a mechanical and electrical connection between the control unit and the energy storage device for all orientations, which are externally visible to a user through the frame and frame plug-in element. This is especially advantageous in situations where a quick replacement of the energy storage device is required.

[0008] Based on the control device described, further possible embodiments of the control device are described below.

[0009] In general, the frame can take on various shapes. In one embodiment, the frame has an approximately rectangular base shape. In another embodiment, the frame has an approximately round base shape, and in yet another embodiment, an approximately square base shape.

[0010] In most embodiments of the control unit, the energy storage unit includes an accumulator for storing electrical energy. In some embodiments, the energy storage unit additionally or alternatively includes a battery.

[0011] Furthermore, in most embodiments, the control device in the connected state has an overall housing that is at least partially formed by the housings of the control unit and the energy storage unit.

[0012] In another embodiment, the frame element and the frame insertion element additionally or alternatively have one or more axes of symmetry in a plane perpendicular to the insertion direction. Furthermore, the electrical coupling pairs are arranged symmetrically with respect to the one or more axes of symmetry. A symmetrical arrangement of the electrical coupling pairs is typically advantageous to prevent misalignment when inserting and withdrawing the frame insertion element from or into the frame. While an asymmetrical arrangement of the coupling pairs is also a possible embodiment of the invention, the different force distribution along the insertion direction during withdrawal or insertion more easily leads to misalignment of the frame insertion element within the frame.

[0013] In a further embodiment of the control device, each coupling pair additionally or alternatively has an electrical contact arranged on the control unit and a corresponding electrical contact arranged on the energy storage unit. In variants of this embodiment, the electrical contact and the corresponding electrical contact are formed by a pin and a socket, respectively. In another variant, the pin is additionally arranged in the frame on the control unit, and the socket is located on the frame insertion element of the energy storage unit. This variant is typically particularly safe, as no contacts carrying a voltage are exposed. In a further variant, the contact is additionally or alternatively arranged on a rear wall within the frame and / or the corresponding contact on a front of the frame insertion element.

[0014] In another embodiment of the control device, the connector is additionally or alternatively designed to transmit a variety of different electrical quantities between the control unit and the energy storage unit, and the connector comprises two electrical coupling pairs for transmitting at least one of the different electrical quantities. This is generally advantageous to provide redundancy in case one of the coupling pairs fails and to increase patient safety. In one variant, the connector comprises two electrical coupling pairs for transmitting each electrical quantity. In this context, "electrical quantities" include electrical signals such as bus signals, as well as ground voltage, phase voltage, etc.

[0015] In one embodiment of the control device, the connector has, additionally or alternatively, at least two electrical coupling pairs, wherein the coupling pairs are configured such that, when the frame plug-in element is inserted into the frame, an electrical connection is established through one of the two coupling pairs before an electrical connection is established through the other coupling pair. This is typically advantageous to avoid undefined states in an electrical circuit of the control device. In one variant, elements of the coupling pair, such as a contact or mating contact, are arranged leading in a plane perpendicular to the insertion direction. In another variant, for example, an element of the coupling pair for ground is arranged leading. In yet another variant, an element of the coupling pair for the supply voltage is arranged leading, additionally or alternatively.

[0016] In a further embodiment, the plug connection additionally or alternatively comprises a releasable, mechanical lock designed to prevent the frame plug element from being removed from the frame after it has been inserted into the frame, regardless of its orientation.In one variant, the releasable mechanical fastener for locking and releasing comprises a locking hook having a locking lug, a locking opening, and a first actuating element, wherein in a rest position the locking hook engages in the locking opening such that the locking hook protrudes through the locking opening and the locking lug at least partially engages behind a rim of the locking opening, wherein in a pre-release position the locking hook engages at least partially in the locking opening such that at least part of the locking hook protrudes through the locking opening and the locking lug is released from the rim of the locking opening, and wherein in a release position the locking hook is arranged outside the locking opening, wherein the actuating element is designed such that actuation of the actuating element moves the locking hook and / or the locking opening from the pre-release position to the release position.In another variant, additional or alternative elements of the releasable mechanical closure are arranged symmetrically to one or more mirror axes of the frame or the frame insertion element.

[0017] In another embodiment, an electrical coupling pair additionally or alternatively comprises a socket as the electrical contact and a pin that can be inserted into the socket as the electrical mating contact. The pin's length is variable in the insertion direction and it includes a spring configured to counteract compression of the pin by means of a restoring force. The socket and pin are arranged such that, in the connected state of the plug connection, the pin is compressed by the socket. This embodiment of the coupling pair is typically advantageous for ensuring a reliable electrical connection even in the presence of, for example, vibrations and manufacturing tolerances of the coupling pairs.

[0018] In one variant of the control device, which includes the releasable mechanical shutter and the electrical coupling pair with a spring, the spring used in the electrical coupling pair is designed such that it can generate a restoring force greater than the force required to close the mechanical shutter. This typically has the advantage that the frame insert is pushed back out of the frame by the spring if the shutter fails to engage. In another variant, several coupling pairs comprise a single spring, and the sum of the restoring forces of all springs is greater than the force required to close the mechanical shutter.

[0019] In a further embodiment of the control device, the connector additionally or alternatively comprises a sealing element arranged such that, in a connected state, contact between dust and / or water and one or more electrical coupling pairs is reduced. In one variant, the seal largely prevents contact altogether.

[0020] In yet another embodiment, an electrical coupling pair additionally or alternatively comprises a rod electrode as the electrical contact and a rod socket as the electrical counter-contact, wherein the rod electrode has a plurality of rod contact elements along an axial direction for the independent transmission of two or more electrical quantities, and the rod socket has a plurality of socket contact elements corresponding to the rod electrode along an axial direction. In one variant, the socket contact elements are designed as ring spring contacts and / or the rod contact elements as cylindrical contact surfaces.

[0021] In a further embodiment, an electronic coupling pair additionally or alternatively has an electrical pickup and an electrical contact surface, wherein the electrical contact surface is arranged on a side of the frame insertion element that points perpendicular to the insertion direction, and the electrical pickup is arranged on an inside of the frame corresponding to the electrical contact surface.

[0022] In another embodiment, the frame and the frame insertion element additionally or alternatively have a basic shape in a plane perpendicular to the insertion direction, which is designed such that the frame insertion element can be inserted into the frame in two orientations, which differ from each other by a relative rotation between frame and frame insertion element of 180° about an insertion direction.

[0023] In yet another embodiment, contacts of the coupling pairs of the frame and the frame insertion element are additionally or alternatively arranged in a cluster-like manner within the frame or on the frame insertion element, wherein a distance between contacts of a cluster is smaller than a distance between the clusters.

[0024] In a further embodiment, the connector additionally or alternatively comprises a guide element and a guided element, which are arranged on the frame and frame insertion element such that, during insertion of the frame insertion element into the frame, the guide element guides the guided element along the insertion direction. The blood pump device according to this disclosure will now be described. The blood pump device comprises an implantable blood pump and a control device according to one of the previously described embodiments, wherein the control device is electrically connected to the blood pump. The blood pump device typically has the same advantages as the previously described control device.

[0025] In one embodiment of the blood pump device, the electrical connection between the blood pump and the control unit is wired. In another embodiment, the electrical connection is additionally or alternatively wireless (e.g., by induction). In further embodiments, the connection serves additionally or alternatively for controlling and / or supplying the blood pump with electrical power.

[0026] The following section explains exemplary embodiments of the control unit and the blood pump unit with reference to the figures. First, an overview of the figures is provided. Fig. 1 shows an embodiment of a control device for a blood pump, comprising a control unit and an energy storage unit; Fig. 2A shows a front view of the control unit. Fig. 1 View along an insertion direction; Fig. 2B shows a frontal view of the energy storage unit. Fig. 1 looking opposite to the direction of insertion; Fig. 3A shows a frontal view of an arrangement of contacts of the control device. Fig. 1 ; Fig. 3B-E show to Fig. 3A Alternative contact arrangements; Fig. 4A shows a cross-section through the control unit. Fig. 1 in a connected state along the insertion direction; Fig. 4B shows a plug connection of the control device. Fig. 1 in a separated state; Fig. 5 shows a control device with two rod electrodes and two rod sockets for making an electrical contact; Fig. 6 shows a magnification of the rod electrodes and rod sockets of the control device. Fig. 5 in the connected state; Fig. 7A shows a front view of an alternative control unit with only one rod electrode; Fig. 7B shows a front view of one in Fig. 7A The control unit shown corresponds to an energy storage unit with only one rod socket; Fig. 8 shows an energy storage unit with a cluster-like arrangement of sockets; and Fig. 9 shows a blood pump device.

[0027] The following is a detailed description of the embodiments shown in the figures.

[0028] A first embodiment of a control device is initially described with reference to the Fign. 1-4 described.

[0029] Fig. 1 Figure 1 shows an embodiment of a control device 100 for a blood pump, comprising a control unit 104 and an energy storage unit 102. Fig. 2A shows a frontal view of control unit 104 from Fig. 1 looking along the introduction direction E. Fig. 2B shows a frontal view of the energy storage unit 102. Fig. 1 looking in the opposite direction to the introduction direction E. Fig. 3A shows a frontal view of a large number of contacts of the control unit 104. Fig. 1 . Fig. 4A shows a cross-section through the control unit 100. Fig. 1 in a connected state along the introduction direction E. Identical components of the in the Fign. 1-4 The control device 100 shown is provided with identical reference numerals in all figures.

[0030] The control unit 104 and the energy storage unit 102 can be detachably connected electrically and mechanically via a plug connection 106. To establish a mechanical connection, the plug connection 106 comprises a frame 108 and a frame insertion element 110 that can be inserted into the frame along an insertion direction E. These frame insertion elements are formed by a housing 104G of the control unit 104 and a housing 102G of the energy storage unit 102. Furthermore, the frame 108 and the frame insertion element 110 are designed such that the frame insertion element 110 can be inserted into the frame 108 in two or more orientations, which differ from each other by a relative rotation between the frame 108 and the frame insertion element 110 about the insertion direction E.Furthermore, the frame 108 and the frame insertion element 110 have several electrical coupling pairs for establishing an electrical connection between the control unit 104 and the energy storage unit 102, and the several electrical coupling pairs are arranged such that an electrical connection between the energy storage unit 102 and the control unit 104 is possible in all orientations.

[0031] In the representation in Fig. 1 For simplicity, only a portion of the housing 104G is shown to illustrate the rear side of some of the electrical coupling pairs arranged on the control unit 104. In the illustrated embodiment, the housing 102G and the housing 104G are made of a thermoplastic material. Possible materials for manufacturing the plastic are ABS-PC, ABS, polyurethane, and PMMA.

[0032] The frame 108 and the frame insertion element 110 have a rectangular basic shape and therefore have two orientations that allow the frame insertion element 110 to be inserted into the frame 108 - a first orientation and a second orientation in which the control unit 104 and energy storage unit 102 are rotated 180° around the insertion direction E relative to each other.

[0033] The in Fign. 1-4 The illustrated embodiment of the control device 100 comprises a total of 10 coupling pairs, each coupling pair having a pin 104S arranged on the control unit 104 and a socket 102B arranged on the energy storage unit 102. The arrangement of the pin 104S on the control unit 104 and the socket 102B on the energy storage unit 102 is not mandatory; that is, the pin could also be arranged on the energy storage unit and the socket on the control unit. However, the arrangement shown is advantageous for user safety as well as for the protection of the device, since a contact on the energy storage unit 102 is located inside the socket 102B and is thus not directly accessible. The pins of the control unit 104 are designed so that they can be inserted into the sockets of the energy storage unit 102 to establish an electrically conductive connection between the control unit 104 and the energy storage unit 102.Furthermore, the pins are arranged on a rear wall within the frame 108 and the sockets on a front of the frame insertion element 110. The number of coupling pairs can be scaled as desired and can thus be adapted to the number of electrical contacts required for the respective application.

[0034] In Fig. 3A Figure 1 shows another enlarged view of the pins as they are arranged within the frame 108 of the control unit 104. As in Fig. 3A As can be seen, the pins are arranged symmetrically with respect to the symmetry axes A1 and A2. The symmetry axes A1 and A2 correspond to the symmetry axes of the frame 108 in a plane perpendicular to the insertion direction E. Furthermore, in Fig. 3A The assignment of the coupling pairs is indicated by the reference symbols B1, B2, G, K, and V. Contacts B1 and B2 are used for bus communication, contact G for a ground connection, contact V for a voltage connection, and contact K for detecting a connection between the control unit 104 and the energy storage unit 102. Each contact (and each mating contact on the storage unit 102) is redundantly designed and present twice, as indicated by the crossed-out reference symbols B1', B2', G', and K'. Furthermore, the redundant coupling pairs are arranged such that an electrical connection corresponding to each contact is possible in all orientations from frame 108 to frame plug-in element 110.

[0035] In Fig. 3A Only one possible arrangement of pins 104S is shown. Other arrangements are also possible. Fig. 3B-E The figures show alternative arrangements of the contacts. All arrangements shown are symmetrical about axes A1 and A2. Fig. 3B und 3C The contacts are arranged in two rows, one above and one below axis A1. While in Fig. 3C the pins 104S are arranged in a row parallel to axis A1, run in Fig. 3B The rows above and below axis A1 are slightly curved. Fig. 3D und Fig. 3E The contacts are arranged in a circle around an intersection point between axis A1 and axis A2. The in Fig. 3E The arrangement shown additionally includes a contact located at the intersection of axes A1 and A2. This allows for an odd number of contacts while maintaining a symmetrical arrangement with respect to axes A1 and A2. Further arrangements will be described later with reference to other embodiments.

[0036] The control device 100 further comprises a releasable mechanical lock, which is designed to prevent the frame insertion element 110 from being removed from the frame 108 after it has been inserted into the frame 108, regardless of its orientation. In the exemplary embodiment of the Fign. 1-4 The mechanical closure comprises two locking lugs 114A and 114B arranged on opposite sides of the frame insertion element 110, which, in a connected state, engage behind a frame element 116A or 116B of a locking opening. Two actuating elements 118A and 118B, arranged on opposite sides of the energy storage unit 102, are designed to release the mechanical connection between the locking lug and the respective frame element when actuated. In the area of ​​the locking lugs 114A and 114B, there is also a notch extending in the insertion direction. These notches can each serve as guide elements to guide the frame elements 116A and 116B when the frame insertion element 110 is inserted into the frame 108.

[0037] In addition, the plug connection 106 includes a sealing element 112 that runs around the frame insertion element 110 and, in a connected state of the plug connection 106 with the frame 108, interacts to reduce contact of, for example, dust and water with the electrical coupling pairs.

[0038] In Fig. 4A A cross-section through the control unit 100 along the insertion direction E in a connected state is shown. The diagram illustrates how, in this connected state, the pins of the control unit 104 are inserted into the sockets of the energy storage unit 102 to establish an electrically conductive connection. Further details of the pin construction are also shown in the cross-section. This construction is described using pin 104S as an example. Pin 104S is adjustable in length along the insertion direction and includes a pin base 1045.3, which incorporates a spring (not shown) designed to counteract compression of the pin 104S by means of a restoring force. The adjustable length of pin 104S is achieved in the example shown by a telescopic rod-like structure of the pin 104S. For this purpose, pin 104S comprises a sleeve 104S.1, which is axially aligned along the insertion direction E, and a [missing element] within the sleeve 104S.1 axially movable tip 104S.2. The tip 1045.2 is pressed by the spring in the pin base 104S.3 into an end of the sleeve 104S.1 facing away from the control unit 110. Furthermore, the socket 102B and pin 104S are arranged such that, when the plug connection 106 is connected, the pin 104S is compressed by the socket 102B to ensure an electrically conductive connection even with manufacturing tolerances. In addition, the springs used in the electrical coupling pairs are designed such that the springs together generate a restoring force greater than the force required to close the mechanical lock. This pushes the frame insert element 110 out of the frame 108 if the mechanical lock has not yet fully engaged. This is typically advantageous so that a user can immediately detect an error when connecting the frame 108 and the frame insert element 110.

[0039] Fig. 4B shows the plug connection Fig. 4A in a separated state. In particular, in Fig. 4B The aperture element 102BL with the sockets and the aperture element 104BL with the pins are shown. This figure illustrates how pins 104S, 104S' are arranged such that when the frame insertion element 110 is inserted into the frame 108, an electrical connection is established through one of the two coupling pairs before an electrical connection is established through the other pins, and when the frame insertion element 110 is removed from the frame 108, the electrical connection of pins 104S and 104S' is the last to be broken. This is achieved in embodiment 100 by arranging pins 104S, 104S' ahead of the other pins in the insertion direction E, as shown by the two in Fig. 4B This becomes clear from the indicated planes P1 and P2. In other embodiments, not shown here, the bushings 102B and 102B' are alternatively arranged in advance, thereby achieving the same effect.

[0040] The following section describes another example of a control device with reference to Fig. 5 and Fig. 6 described.

[0041] Fig. 5 Figure 1 shows a control device 200 with two rod electrodes 204S, 204S' and two rod sockets 202B, 202B' for making an electrical contact. Fig. 6 shows a magnification of the rod electrodes 204S, 204S' and rod bushings 202B, 202B' of the control unit 200. Fig. 5 in a connected state.

[0042] The control unit 200 is largely identical to the control unit 100. The control unit 200 comprises an energy storage unit 202 and a control unit 204, which are mechanically and electrically detachably connected to each other via a plug connection 206. The plug connection 206 includes a frame 208 arranged on the control unit 204 and a frame insertion unit 210 arranged on the energy storage unit 204. The control unit 200 differs from the control unit 100 primarily with regard to the establishment of an electrical connection between the control unit 204 and the energy storage unit 202. For this purpose, the control unit 204 comprises the two rod electrodes 204S and 204S' arranged in the frame 208 and the two rod sockets 202B, 202B' arranged on the frame insertion element 210. As in Fig. 6 As shown, the rod electrodes 202S, 202S' comprise five cylindrical rod contact elements 204S.1-5 and 204S'.1-5, respectively, arranged axially one behind the other along a longitudinal axis of the rod electrodes. Each rod contact element is arranged such that it can establish an electrically conductive contact with one of five axially arranged socket contact elements 202B.1-5 and 202B'.1-5. The socket contact elements 202B.1-5 and 202B'.1-5 are designed as ring spring contacts. Adjacent ring spring contacts are electrically insulated from one another by insulators placed between them. The ring spring contacts 202B.1-5 and 202B'.1-5 are located in a housing made of a dielectric material such as plastic or ceramic. Furthermore, each of the rod bushings 202B, 202B' includes a seal 202B.6, 202B'.6 to prevent the ingress of dust and liquids into the bushings when connected.The electrical contacts of the rod electrodes 204S, 204S' and the rod sockets 202B, 202B' are each designed in such a way that even when the control unit 204 and the energy storage element are rotated by 180° around the insertion direction E relative to each other, a corresponding correct contact is established.

[0043] In embodiment 200 of the control device, two rod electrodes or rod bushings are used to create redundancy. Alternatively, it is also possible to use only one rod electrode. Such an embodiment of a control device is described in Fig. 7A und Fig. 7B shown.

[0044] Fig. 7A shows a frontal view of an alternative control unit 504 with only one rod electrode 504S. Fig. 7B shows a frontal view of a person in Fig. 7A The control unit 504 shown corresponds to the energy storage unit 502 with only one rod socket 502B. The rod electrode 504S and the rod socket 502B are constructed in the same way as the previously discussed rod electrodes 204S, 204S' and rod sockets 202B, 202B'. By arranging the rod electrode 504S or rod socket 502B centrally within the frame 108 or the frame insertion element 110, it is also possible here to bring the frame insertion element into electrical and mechanical contact with each other when the frame element 108 is rotated by 180° around the insertion direction E.

[0045] Other embodiments also feature a different arrangement of contacts and mating contacts on the frame and frame insertion element. The following will now refer to... Fig. 8 Another embodiment will be described.

[0046] Fig. 8 shows an energy storage unit 304, with a cluster-like arrangement of sockets.

[0047] The energy storage unit 304, like other previously discussed embodiments, comprises a frame plug-in unit 310. Sockets 304B.1-5 and 304B'.1-5 are arranged in two clusters C1 and C2 on the frame plug-in unit 310. Clusters C1 and C2 are defined by the fact that the distance between contacts of a cluster is smaller than the distance between the clusters. In this embodiment as well, the sockets are designed such that an electrical connection is possible even when the energy storage unit and a corresponding control unit are rotating relative to each other.

[0048] Finally, the use of the presented control unit as part of a blood pump system should be discussed with regard to Fig. 9 be described.

[0049] Fig. 9Figure 1 shows a blood pump assembly 400. The blood pump assembly 400 comprises the previously described control unit 104 with the frame 108 and the energy storage unit 102 with the frame insertion element 110. The control unit 104 is electrically connected to a blood pump 402 to supply the blood pump 402 with electrical energy and to control it by means of control signals. Alternatively, any other of the presented control units can also be part of the blood pump assembly instead of the control unit 100.

[0050] In summary, this disclosure describes a control device (100) for a blood pump, comprising a control unit (104) and an energy storage unit (102), which can be detachably connected to each other electrically and mechanically via a plug connection (106). The plug connection (106) for establishing a mechanical connection has a frame (108) and a frame insertion element (110) that can be inserted into the frame (108) along an insertion direction (E), which are formed by a housing (104G) of the control unit (104) and a housing (102G) of the energy storage unit (102). Furthermore, the frame (108) and the frame insertion element (110) are designed such that the frame insertion element (110) can be inserted into the frame (108) in two or more orientations, which differ from each other by a relative rotation between the frame (108) and the frame insertion element (110) about the insertion direction (E).Furthermore, the frame (108) and the frame insertion element (110) have one or more electrical coupling pairs for establishing an electrical connection between the control unit (104) and the energy storage unit (102), and the one or more electrical coupling pairs are arranged such that an electrical connection between the energy storage unit (102) and the control unit (104) is possible in all orientations.

Claims

1. A control device (100) for a blood pump, comprising a control unit (104) and an energy storage unit (102) which are detachably connectable to one another electrically and mechanically via a plug connection (106), wherein the plug connection (106) for establishing a mechanical connection has a frame (108) and a frame insertion element (110) insertable into the frame (108) along an insertion direction (E), said frame and frame insertion element being formed by a housing (104G) of the control unit (104) and a housing (102G) of the energy storage unit (102), the frame (108) and the frame insertion element (110) are configured such that the frame insertion element (110) is insertable into the frame (108) in two or more orientations which differ from one another by a relative rotation between the frame (108) and the frame insertion element (110) about the insertion direction (E), and the frame (108) and the frame insertion element (110) have one or more electrical coupling pairs for establishing an electrical connection between the control unit (104) and the energy storage unit (102), and the one or more electrical coupling pairs are arranged such that an electrical connection between the energy storage unit (102) and the control unit (104) is possible in all orientations.

2. The control device (100) according to claim 1, wherein the frame (108) and the frame insertion element (110) have one or more mirror axes (A1, A2) in a plane perpendicular to the insertion direction (E) and the electrical coupling pairs are arranged symmetrically with respect to the one or more mirror axes (A1, A2).

3. The control device (100) according to any one of claims 1 or 2, wherein each coupling pair comprises an electrical contact (104S) arranged on the control unit (104) and a mating electrical contact (102B) arranged on the energy storage unit (102).

4. The control device (100) according to any one of the preceding claims, wherein the plug connection (106) is configured to transmit a plurality of different electrical quantities between control unit (104) and energy storage unit (102) and the plug connection (106) comprises at least two electrical coupling pairs for the transmission of each of the different electrical quantities.

5. The control device (100) according to any one of the preceding claims, wherein the plug connection (106) has at least two electrical coupling pairs, wherein the coupling pairs are configured such that, when the frame insertion element (110) is inserted into the frame (108), an electrical connection is established by one of the two coupling pairs before an electrical connection is established by another coupling pair.

6. The control device (100) according to any one of the preceding claims, wherein the plug connection (106) comprises a releasable mechanical lock which is configured to prevent removal of the frame insertion element (110) from the frame (108) after insertion of the frame insertion element (110) into the frame (108), regardless of the orientation.

7. The control device (100) according to any one of the preceding claims, wherein an electrical coupling pair comprises a socket (102B) as electrical contact and a pin (104S) insertable into the socket (102B) as electrical mating contact, wherein the pin (104S) is variable in length in the insertion direction (E) and comprises a spring (104.S.3) which is configured to counteract a compression of the pin (104S) by means of a restoring force, and the socket (102B) and pin (104S) are arranged such that the pin (104S) is compressed by the socket (102B) when the plug connection (106) is in the connected state.

8. The control device (100) according to claim 6 and claim 7, wherein the spring (104S.3) used in the electrical coupling pair is configured such that the spring (104S.3) may form a restoring force that is greater than a force required to close the mechanical lock.

9. The control device (100) according to any one of the preceding claims, wherein the plug connection (106) comprises a sealing element (112) which is arranged such that, in a connected state of the plug connection (106), the extent to which dust and / or water come into contact with the one or more electrical coupling pairs is reduced.

10. The control device (200) according to any one of the preceding claims, wherein an electrical coupling pair comprises a rod electrode (104S) as electrical contact and a rod socket (102B) as electrical mating contact, wherein the rod electrode (104S) has a plurality of rod contact elements (104S.1-5) along an axial direction of the rod electrode (104S) for independently transmitting two or more electrical quantities, and the rod socket (102B) has a plurality of socket contact elements (102B.1-5) along an axial direction of the rod socket (102B) corresponding to the rod electrode (102B).

11. The control device (100) according to any one of the preceding claims, wherein an electronic coupling pair comprises an electrical collector and an electrical contact surface, wherein the electrical contact surface is arranged on a side of the frame insertion element (110) pointing perpendicularly to the insertion direction (E), and the electrical collector is arranged on an inner side of the frame (108) corresponding to the electrical contact surface.

12. The control device (100) according to any one of the preceding claims, wherein the frame (108) and the frame insertion element (110) have a basic shape in a plane perpendicular to the insertion direction (E), said basic shape being configured such that the frame insertion element (110) is insertable into the frame (108) in two orientations, which differ from each other by a relative rotation between frame (108) and frame insertion element (110) of 180° about an insertion direction (E).

13. The control device (300) according to any one of the preceding claims, wherein contacts (304B.1-5) of the coupling pairs of the frame (308) and the frame insertion element (310) are arranged in a cluster-like manner within the frame (308) or on the frame insertion element (310), wherein a distance between contacts of a cluster (C1, C2) is smaller than a distance between the clusters (C1, C2).

14. A blood pump device (400) comprising: an implantable blood pump (402) and a control device (100) according to any one of the preceding claims, wherein the control device (100) is electrically connected to the blood pump (402).