Device to assist in the handling and implantation of a cardiac device electrode

Abstract

The invention relates to a device for assisting in the handling and implantation of at least one electrode support(s) for a cardiac device, in particular a cardiac pacing device, said at least one electrode support(s) comprising a distal end and a proximal end, the proximal end comprising at least one connector configured to be in electrical connection with at least one portion of the distal end, characterized in that said device comprises: - a body, preferably one-piece, configured to cover at least one portion of said at least one connector, - at least one receiving portion for a means of temporary electrical connection, such as a crocodile clip, said at least one receiving portion being electrically conductive, - at least one connection element in electrical connection with said at least one receiving portion, said at least one connection element being in controlled tangential contact with said at least one connector.The invention also relates to the use of this device for the transfer of electrical signals into or from a cardiac stimulation device electrode, as well as a method for assembling this device.

Description

Title of the invention: Device to aid in the handling and implantation of a cardiac device electrode

[0001] The object of the present invention relates to a device for assisting in the handling and implantation of a cardiac device electrode, enabling in particular the transfer of electrical signals in or from such a cardiac device electrode, comprising a body, a receiving portion for a means of temporary electrical connection, such as a crocodile clip, said receiving portion being electrically conductive, and at least one connection element in electrical connection with the conductive receiving portion and a conductive part of the electrode. EARLIER ART

[0002] The heart is a complex organ whose function is controlled by the application of precise electrical fields that cause specific muscles to contract at precise times to regulate the filling and ejection of blood into and out of the organ. The heart is thus a pump that circulates blood throughout the body. Structurally, the heart comprises four chambers (left and right atria and left and right ventricles) connected by four valves. However, sometimes the heart's function is impaired, requiring the placement (more precisely, the implantation) of one or more medical devices that deliver electrical current(s) at the appropriate time(s) to ensure the proper functioning of the organ.Such devices (such as implantable pacemakers and / or defibrillators) typically consist of an electronic unit configured for treatment by delivering electrical current and a lead electrically connected to this unit. The unit is typically implanted away from the heart and is connected to it via the lead (typically through one of the veins supplying blood to the heart). Therefore, precise implantation of the lead into the heart is crucial to ensure effective delivery of electrical therapy. The practitioner (such as a surgeon or electrophysiologist) performing the implantation uses specialized tools to achieve the best possible placement.One of these tools is a device that attaches to the proximal end of the probe, that is, the end intended to be directly connected to the electronic control unit (the other end of the probe, called the distal end, is the end intended to be implanted in the heart). This device, which attaches to the proximal end of the probe, allows, if necessary, the insertion of a stylet, which is more rigid than the probe, to facilitate implantation, and / or the temporary attachment of electrical connectors to help the surgeon precisely position the probe in the heart. the optimum location chosen, for example the location most sensitive to electric current(s).

[0003] Patent document US2020222685A1 thus discloses a "terminal tool" comprising a main body, an electrical connector body, and an electrical connector, wherein the main body comprises a distal clamping section and a shaft, which shaft includes a window and a first lumen extending through the shaft to receive a terminal end of an implantable wire. The electrical connector body includes a second lumen and can rotate independently of the main body. The shaft extends at least partially through the second lumen. The electrical connector is coupled to the electrical connector body and extends at least partially through the shaft window. The solution described in US2020222685A1 therefore enables electrical contact through windows and an interface for receiving grippers such as alligator clips.However, this solution does not guarantee constant electrical contact because the conductive elements of the tool have limited travel. Furthermore, the free rotation of the conductive elements around the proximal end of the cardiac probe depends on precise calibration of the tool's contact elements relative to the conductive elements of the cardiac probe's proximal end. The proposed solution therefore necessitates a more complex tool with several sub-elements to ensure its proper functioning, adding further complex manufacturing steps for a product intended for surgical use, which must therefore be sterile.

[0004] Patent document EP0740943A1 relates to a device for manipulating and positioning an electrode for a pacemaker (cardiac stimulation device). The device of EP0740943A1 includes, in particular, a stylus, a body, a connector, and an electrode. The body has a first handle, a second handle for maneuvering, an inlet for the stylus, and a coupling means for the connector. However, the proposed solution has a relatively complex design that is difficult to manufacture and does not ensure easy rotation relative to the cardiac lead, thus limiting its handling.

[0005] US patent document 2023347142A1 discloses a temporary device used for implanting cardiac pacing leads (such as those used with pacemakers) to deliver electrical charges to cardiac tissue. The disclosed device includes a locking light configured to receive a pacing lead. The locking light includes a connector body segment for receiving a pacing lead connector body in a first friction fit location and a pin segment for receiving a pacing lead connector pin in a second friction fit location. Friction adjustment points allow relative rotation between the cardiac pacing lead body and the connector pin when the cardiac pacing lead is bent / folded, and prevent relative rotation between the lead body and the connector pin when the cardiac pacing lead is inserted into the target tissue. The device described in US patent document 2023347142A1 therefore has the advantage of allowing the reception or delivery of electrical current during implantation of the lead to which it is attached, while also allowing some rotational mobility between the device and the lead during implantation. However, this rotational mobility is directly dependent on the connection with external electrical connectors (such as alligator clips), which can prevent or significantly limit the freedom of rotation during implantation (potential for significant friction).Thus, the device described in patent document US2023347142A1 exhibits variability in the free rotation of the device-cardiac lead pair during the latter's implantation, which can alter the quality of the cardiac lead implantation.

[0006] TECHNICAL PROBLEM

[0007] The object of the present invention is generally to remedy these technical problems, in particular to improve the quality of implantation of a cardiac probe in a patient by providing a temporary implantation device having constant handling characteristics and / or independently adjustable as desired.

[0008] An object of the present invention aims in particular to improve the rotation between such a temporary device and a cardiac probe, said device being placed at the proximal end of said cardiac probe (i.e. on the side of the probe where the control and delivery unit for the electrical impulses of the device as a whole is located, once implanted).

[0009] An object of the present invention also aims to increase the regularity of the interactions between the implantation tools (electrical connectors such as crocodile clips) and the implanted objects, in particular a cardiac probe. Summary of the invention

[0010] The object of the present invention makes it possible to solve these technical problems by providing a device to aid in the handling and implantation of at least one electrode holder(s) for a cardiac device, in particular a cardiac pacing device, said at least one electrode holder(s) comprising a distal end and a proximal end, the proximal end comprising at least one connector configured to be electrically connected to at least a portion of the distal end, characterized in that said device comprises: - a body, preferably a single piece, configured to cover at least a portion of said at least one connector, - at least one portion designed to accommodate a temporary electrical connection, such as a crocodile clip, said at least one portion designed to accommodate an electrically conductive connection, - at least one connection element in electrical connection with said at least one reception portion, said at least one connection element being in controlled tangential contact with said at least one connector.

[0011] In such a device for assisting in the handling and implantation of at least one electrode support(s) for a cardiac device, it is understood that the distal end is configured to be implanted in cardiac tissue and / or connected to a means of attachment to cardiac tissue.

[0012] In such a device for assisting in the handling and implantation of at least one electrode support(s) for a cardiac device, it is understood that said device is configured to be in free rotation with respect to said electrode support(s) along at least one axis.

[0013] By "configured to be in free rotation", it is understood in particular in the context of the present invention that the device for assisting in the handling and implantation of at least one electrode support(s) for a cardiac device according to the present invention is generally configured to allow its free rotation, that is to say that it does not include any elements blocking or significantly hindering its rotation around at least one axis.

[0014] In the context of the present invention, "controlled tangential contact" means that the tangential contact is independently adjustable, particularly in strength and / or quality (for example, relative to the contact surface), to allow the user to select the ease of rotation. Indeed, when using a temporary electrical connection means, such as an alligator clip, on a connector, for example, the spring of the alligator clip exerts a force that the user can hardly control. By adding at least one connection element in controlled tangential contact with the connector, the contact force exerted by the temporary electrical connection means, such as an alligator clip, is not directly applied to the connector, since said at least one connection element is interposed between the two.Thus, it is possible to adjust the ease of rotation of the connector independently by means of a temporary electrical connection, such as a crocodile clip.

[0015] Preferably, free rotation about at least one axis occurs relative to the longitudinal axis of the electrode holder(s) for a cardiac device. The longitudinal axis of the electrode holder(s) for a cardiac device is the joint line or parallel to the length of the electrode holder(s) for a cardiac device. Typically, such electrode holders for cardiac devices are flexible, and such lines running parallel to or connected to the lengths of such electrode holders are therefore curved. In this case, free rotation about at least one axis occurs relative to the longitudinal axis of the electrode holder(s) for a cardiac device at the location where the device according to the present invention is placed, for example, at the proximal end of the electrode holder(s) for a cardiac device.

[0016] “Longitudinal line” and “longitudinal axis” are equivalent expressions in the context of the present invention, i.e. this line or axis can be curved along the length of the electrode support(s) for a cardiac device.

[0017] Preferably, the electrode support(s) for a cardiac device is a cardiac probe body.

[0018] Preferably, the device for assisting in the handling and implantation of at least one electrode holder(s) for a cardiac device includes at least one means for assisting in the (including temporary) attachment of a temporary electrical connection means, such as a crocodile clip, to the receiving portion. An example of such an attachment aid is the placement of at least one opening and / or at least one additional bulge.

[0019] In a particular embodiment, the device according to the present invention comprises several reception portions for several means of temporary electrical connections, such as alligator clips. The advantage is to increase the number of connections, for example in the case of multi-electrode probes.

[0020] Advantageously, said at least one connection element has at least one portion that is independently mobile with respect to the host portion.

[0021] Thus, said at least one portion independently movable with respect to the receiving portion allows an independent and precise adjustment of the tangential contact with said at least one connector.

[0022] In a particular embodiment, said at least one independently movable portion relative to the receiving portion incorporates, and / or is coupled with, an independent pressure means, such as a spring element.

[0023] For the purposes of this invention, "spring element" means a mechanical part or component which uses the elastic properties of at least one material to absorb mechanical energy, produce movement and / or exert force or torque.

[0024] Preferably, the spring element comprises a material, or a combination of materials, that is conductive and elastic, such as a metal or a metal alloy which, depending on its implementation, has both electrically conductive and elastic properties. For example, an annular spiral spring Metallic (such as steel) has elastic properties and can be electrically conductive.

[0025] In a particular embodiment, said at least one independently movable portion relative to the receiving portion comprises a metal strand configured such that, when said at least one connector is placed against this strand in tangential contact, the metal strand is displaced. This displacement causes a deformation of said metal strand, and thanks to its elastic properties, the strand exerts continuous pressure on said at least one connector. It is therefore easy to adjust this pressure simply by bending the metal strand in one direction or the other.

[0026] Thus, preferably, said at least one connection element comprises a surface contact area, linear or point, tangential with said at least one freely rotating connector.

[0027] More preferably, said at least one connecting element is held by independent pressure in tangential contact with said at least one connector, said at least one connecting element preferably comprising a surface contact area, linear or point, tangential with said at least one freely rotating connector.

[0028] Thus, it is possible to choose the type of tangential contact to optimize the passage of electric current according to the nature and arrangement of said at least one connection element and said at least one connector.

[0029] In a particular embodiment, the device includes a means for retaining said at least one electrode support(s) configured so that said at least one electrode support(s) is in free rotation about at least one axis.

[0030] Such a retention means can make it possible to keep the electrode support(s) in a position in which said at least one connector is properly supplied with electricity.

[0031] Such a retention means can prevent an unintentional disconnection of the device according to the present invention and of the electrode support(s).

[0032] For example, in one embodiment, the retention means comprises: - an insertion opening configured so that the insertion of said at least one electrode support(s) into the insertion opening is carried out according to a first configuration, and - a receiving space for said at least one electrode support(s), the receiving space being connected with the insertion opening and is configured to prevent the exit of said at least one electrode support(s) in at least a second configuration, for example by means of a complementary male-female system between the receiving space and said at least one electrode support(s).

[0033] Advantageously, said at least one connecting element comprises at least one V-shaped section.

[0034] The V shape has in one embodiment an advantage with regard to the contact with said at least one connector: this contact can be point contact, multi-point contact, linear contact, multi-linear contact, surface contact or multi-surface contact depending on the shape and placement of said at least one connector relative to the V section.

[0035] In a particular embodiment, the V-shaped section further offers a mechanical advantage with regard to its crushing while allowing controlled pressure to be exerted and electrical contact with said at least one connector allowing facilitated free rotation of the latter.

[0036] In a particular embodiment, said at least one reception portion has a general U-shape.

[0037] The general U-shape allows in particular for easier gripping when pliers, such as crocodile pliers, are used.

[0038] Preferably, the receiving portion includes a means of retention in the body of the device.

[0039] Indeed, since the receiving portion is typically made of a different material (electrically conductive) than the body (electrically insulating) in the context of the invention, the body and the receiving portion are initially two separate pieces fixed to one another. Thus, the retaining means within the body of the device ensures the integrity of the device according to the present invention, particularly when a temporary electrical connection means, such as a crocodile clip, can exert relatively strong pressure which, in some cases, could detach the receiving portion from the body of the device in the absence of such a retaining means.

[0040] Furthermore, in a particular embodiment, the device includes a funnel-shaped portion configured to accommodate and guide the insertion of a mandrel into an electrode holder(s).

[0041] Indeed, since the device according to the present invention is intended to be placed at the proximal end of the electrode support(s), it is advantageous to have a funnel-shaped portion so that the device according to the present invention includes several functions useful to the practitioner.

[0042] Preferably, the body (of the device according to the present invention) is made of an electrically insulating material.

[0043] This allows for even better management of applied electrical currents, in particular avoiding parasitic signals and improving safety.

[0044] Preferably, the reception portion includes guidance means configured to receive and / or retain said temporary connection means.

[0045] It is advantageous to assist users in securing temporary connection means, such as alligator clips, by adding guiding means. Furthermore, it is common for such temporary connection means, such as alligator clips, They detach spontaneously (primarily due to the pressure applied to such devices). It is therefore advantageous to add means of retaining these temporary connection devices, such as indentations in the receiving portion, or even securing clips.

[0046] Preferably, said device is configured so as not to transmit pressure from the receiving portion to said at least one temporary electrical connection element when said at least one temporary electrical connection means, such as a crocodile clip, is received by said receiving portion.

[0047] Indeed, as explained above, the advantage of the present invention is to make the receiving portion pressure-independent with respect to said at least one temporary electrical connection element and vice versa.

[0048] Thus, an object of the present invention further relates to the use of a device according to the present invention for the transfer of electrical signals into or from a cardiac stimulation device electrode.

[0049] The advantage of using the device according to the present invention is to allow better handling of the elements to be implanted and better management of the applied electrical currents by avoiding in particular the generation of parasitic signals in or from a cardiac stimulation device electrode.

[0050] The object of the present invention also relates to a method of assembling a device according to the present invention, characterized in that the portion for receiving a means of temporary electrical connection is fixed on the body of said device.

[0051] Indeed, one of the benefits linked to the characteristics of the present invention is the simplification of the assembly steps of such a device, the number of parts to be assembled being limited. FIGURES

[0052] [Fig. 1] The [Fig. 1] is a three-dimensional representation of an embodiment of a device according to the present invention, in which an electrode support(s) and a mandrel are being inserted.

[0053] [Fig.2] Fig.2 is a representation according to a longitudinal cross-sectional view of a device according to the present invention, in which an electrode holder(s) and a mandrel are inserted.

[0054] [Fig. 3] Fig. 3 is a cross-sectional view representation of a device according to the present invention, in which an electrode support(s) is inserted.

[0055] [Fig. 4] [Fig. 4] represents a device according to the present invention from a view in three dimensions.

[0056] [Fig.5] The [Fig.5] is a three-dimensional exploded view representing the attachment of the receiving portion to the body of the device according to the [Fig.4].

[0057] [Fig.6] The [Fig.6] is a three-dimensional representation of an embodiment of the device according to the present invention, without electrode support(s) or mandrel.

[0058] [Fig. 7] [Fig. 7] is a cross-sectional view of an embodiment similar to that shown in [Fig. 6] where the connector is introduced (the connector is not shown here). DETAILED DESCRIPTION

[0059] Figure 1 shows a device 1 according to the present invention in which an electrode holder(s) 2 and a mandrel 13 are inserted, which electrode holder(s) has a connector 3. The device 1 shown in Figure 1 consists of a body 4, a receiving portion 5, and a means for retaining the electrode holder(s) 8. Figure 1 also shows a temporary electrical connection means 6, reversibly attached to the receiving portion 5.

[0060] Fig. 2 represents a device 1 (according to a longitudinal sectional view), in which an electrode holder 2 is inserted, and a mandrel 13, also inserted or intended to be inserted, in the electrode holder 2. It can further be seen on Fig. 2 that the mandrel 13, the device 1 and the electrode holder 2 are aligned along an axis AB. The device 1 according to the present invention consists of a body 4, and has a receiving portion 5. This receiving portion 5 includes at least one connection element 7, here having a V-shape, which comes into contact with the connector 3 of the electrode holder(s) 2. The device 1 also includes a retention means 8 for the electrode holder(s) 2. This retention means 8 ensures that the device 1 is attached to the electrode holder(s) 2, and prevents unintentional disconnections.These electrode holder retention means 8 involve, in the case shown, a complementary retention system 15 on the electrode holder 2 allowing the electrode holder 2 to rotate freely around the axis AB. Also shown in [Fig. 2] is a funnel shape 12 at the proximal end of the device 1 to facilitate insertion of the mandrel 13 into the device 1 according to the present invention and into the electrode holder 2.

[0061] Figure 3 shows a device 1 (in cross-sectional view) comprising a body 4, into which an electrode holder 2 is inserted, the holder having in its center a slot 16 for the insertion of a mandrel (not visible in this view). The cross-section is made at the level of the receiving portion 5, which has two connecting elements 7 in contact with the connector 3 and positioned opposite each other with respect to the electrode holder 2. The receiving portion 5 also includes two retaining means 11 preventing the receiving portion 5 from unintentionally detaching from the device 1 according to the present invention. The receiving portion 5 also includes two guiding means 14 for guiding and retaining here the temporary electrical connection means 6. In [Fig.3] the temporary electrical connection means 6 is a crocodile clip.

[0062] Figure 4 shows the device 1, consisting of a body 4 and a receiving portion 5, as well as a retention means 8 for the electrode holder(s) (the latter not being shown in Figure 4). The device 1, as shown in Figure 4, also includes, at its receiving portion 5, a male-female complementary system 9. Here, the male part is molded with the body 4 of the device 1, and the female part consists of an opening on the receiving portion 5 arranged so that the male part fits into the female part. The arrangement of this male-female complementary system 9, as shown in Figure 4, allows, during the manufacture of the device 1, a directed insertion of the receiving portion 5 onto the body 4 of the device 1 according to the present invention.The receiving portion 5 further includes a retention means 11 preventing the receiving portion 5 from unintentionally detaching from the device 1 according to the present invention, particularly during handling thereof.

[0063] The receiving portion 5 includes, as in [Fig. 4], a retention means 8 for the electrode holder(s) (the latter not being shown in [Fig. 5]). The male-female complementary system 9, as described in [Fig. 4], is shown here exploded to reveal the elements of this system, namely the male portion on the body 4 and the female opening on the receiving portion 5 of the device 1. The receiving portion 5 is provided with retention means 11, connecting elements 7, and guiding means 14, as previously explained (for example, in [Fig. 3]). It is particularly evident in [Fig. 5] that the female opening of the male-female complementary system is offset on this receiving portion 5.This asymmetry allows, where applicable particularly when the two faces of the receiving portion 5 are functionalized differently, for the receiving portion 5 to be correctly assembled with the body 4 of the device 1 according to the present invention (the male portion fitting into the female portion).

[0064] It has also been shown in [Fig. 5], two general U shapes inscribed in the receiving portion 5. Thus, a first general U shape 10A is visible by projection above the body 4 of the device 1, intended to receive the receiving portion 5. A second general U shape 10B is also visible by projection onto the side of the receiving portion 5. It is understood in the context of the present invention that the device 1 may comprise any one, or both, of these two U shapes.

[0065] In [Fig. 6], another embodiment of the device 1 according to the present invention is shown, in which a receiving portion 5 in the form of an electrically conductive spiral 17 is placed around a portion of the body 4 of said device 1. Device 1. This receiving portion 5 is adapted to receive a temporary electrical connection means (not shown in [Fig. 6]). Here too, the couple formed by a connection means and the receiving portion 5, in which the temporary electrical connection means exerts pressure on this receiving portion 5, abuts against the body 4 of Device 1 and thus prevents the exertion of direct pressure on the connector (not shown here). Thus, the connector is not subjected to pressure from a temporary electrical connection means that would prevent the free rotation of said connector. The electrically conductive spiral 17 has a first locking end 18 enabling said electrically conductive spiral 17 to maintain a fixed configuration relative to the body 4 of said Device 1.A second end of the electrically conductive spiral 17 includes a connecting element 7, here a straight portion at the end of the electrically conductive spiral 17, inscribed in a notch 19 of the body 4 of said device 1, allowing this connecting element 7 to come into contact with the connector (not shown in [Fig. 6]). The device shown in [Fig. 6] also includes a funnel-shaped 12 at its proximal end for the insertion of a mandrel.

[0066] Figure 7 shows a device 1 with a funnel-shaped portion 12, a receiving portion 5 adapted for receiving a temporary electrical connection means (not shown in Figure 7) in the form of an electrically conductive spiral 17, positioned around a portion of the body 4 of said device 1. The electrically conductive spiral 17 includes a connecting element 7, here a straight portion at the end of the electrically conductive spiral 17, inscribed in a notch 19 of the body 4 of said device 1, allowing this connecting element 7 to come into contact with the connector (not shown in Figure 6). The connector thus comes into a receiving space 20 of said connector. Also visible in Figure 7 is an opening 21 located on the proximal side of the device 1 according to the present invention, for the insertion of a mandrel (not shown in Figure 7).

[0067] It should be noted that these figures are simply illustrations of the present invention, which is not limited solely to these embodiments described. Examples

[0068] Tests were carried out to evaluate the transmissible torque of a device according to the present invention dedicated to a connector found on an "IS1" type of cardiac probes ("IS" for "international standard" in English, i.e. a type of connector standardized in art).

[0069] Thus, the device according to the present invention, tested and having characteristics identical to those shown in Figures 1, 2, 3, 4 and 5, was compared on the one hand to a direct connection with a crocodile clip on the same connector, at the level of the "pin" (i.e., the proximal end of the IS1 probe) and on the other hand to a direct connection with a crocodile clip on a "pin" of an IS4 probe, i.e., to a "pin" connector whose diameter is smaller than the "pin" of an IS1 type probe.

[0070] The IS1 probe tested is an "XFINE™" probe and the IS4 probe tested is a "NAVIGO™" probe, both from the company Microport CRM.

[0071] The equipment used to determine the torque values ​​is a 35N.cm TSD-50 OZ-IN torque sensor from the brand AMETEK, with a type DFS II display from the brand Chatillon.

[0072] The results are grouped in Table 1 below.

[0073] [Table 1] Results of mean transmissible torques obtained with the connection means tested on IS4 and IS1 connectors: Temporary connection methods Probe type "IS4" Probe type "IS1" Contact with pin 01.37+ / -0.03mm Contact with pin 01.59+ / -0.03mm Alligator clip 0.150 N.cm 0.407 N.cm Device according to figures 1 to 5 for IS1 N / A 0.072 N.cm

[0074] “N / A” for “Not Applicable” (given that the device according to the present The tested invention is dedicated to an IS1 type connector.

[0075] It is therefore clear that the resisting torque of the device according to the present invention is significantly lower than that associated with the use of crocodile clips applied to an IS1 connector (more than 5 times lower: 0.072 N.cm vs. 0.407 N.cm).

[0076] By way of more general comparison to other systems existing on the market in particular for an IS4 type connector not applicable with the tested device, on the one hand, it can be seen that even with a smaller pin for 1TS4 compared with the IS 1, displaying a value 2.71 times lower compared with the IS 1 for the crocodile clip (0.407 N.cm vs ; 0.150 N.cm), the device according to the present invention makes it possible to lower this torque by more than two times (0.072N.cm vs. 0.150N.cm).

[0077] This comparison therefore demonstrates the surprising effect of the device according to the present invention.

[0078] It should be noted that this example is a simple illustration of the advantages of the present invention, which is not limited solely to the embodiments described.

Claims

Demands

1. Device (1) for assisting in the handling and implantation of at least one electrode holder (2) for a cardiac device, in particular a cardiac pacing device, said at least one electrode holder (2) comprising a distal end and a proximal end, the proximal end comprising at least one connector (3) configured to be electrically connected to at least a portion of the distal end, characterized in that said device (1) comprises: - a body (4), preferably one-piece, configured to cover at least a portion of said at least one connector (3), - at least one receiving portion (5) for a temporary electrical connection means (6), such as a crocodile clip, said at least one receiving portion (5) being electrically conductive, - at least one connecting element (7) electrically connected to said at least one receiving portion (5),said at least one connecting element (7) being in controlled tangential contact with said at least one connector (3).

2. Device (1) according to claim 1, characterized in that said at least one connecting element (7) has at least one portion independently movable with respect to the receiving portion (5).

3. Device (1) according to claim 1 or 2, characterized in that said at least one connecting element (7) comprises a surface contact area, linear or point, tangential to said at least one freely rotating connector (3).

4. Device (1) according to any one of the preceding claims, characterized in that the device (1) comprises a retention means (8) for said at least one electrode support (2) configured so that said at least one electrode support (2) is free to rotate about at least one axis.

5. Device (1) according to claim 4, characterized in that the retention means comprises: - an insertion opening configured so that the insertion of said at least one electrode holder(s) into the insertion opening is carried out according to a first configuration, and - a receiving space for said at least one electrode holder(s), the receiving space being connected with the insertion opening and is configured to prevent the exit of said at least one electrode holder(s) in at least one second configuration, for example by means of a complementary male-female system (9) between the receiving space and said at least one electrode holder(s).

6. Device (1) according to any one of the preceding claims, characterized in that said at least one connecting element (7) comprises at least one V-shaped section.

7. Device (1) according to any one of the preceding claims, characterized in that said at least one reception portion (5) has a general U-shape (10A,10B).

8. Device (1) according to any one of the preceding claims, characterized in that the receiving portion (5) comprises a retention means (11) in the body (4) of the device (1).

9. Device (1) according to any one of the preceding claims, characterized in that the device (1) comprises a funnel-shaped portion (12) configured to accommodate and guide the insertion of a mandrel (13) into an electrode holder (2).

10. Device (1) according to any one of the preceding claims, characterized in that the body (4) is made of an electrically insulating material.

11. Device (1) according to any one of the preceding claims, characterized in that the receiving portion (5) comprises guiding means (14) configured to receive and / or retain said temporary connection means (6).

12. Device (1) according to any one of the preceding claims, characterized in that said device (1) is configured not to transmit pressure from the receiving portion (5) to said at least one electrical temporary connection element (7) when said at least one electrical temporary connection means (6), such as a crocodile clip, is received by said receiving portion (5).

13. Use of a device (1) according to any one of the preceding claims for the transfer of electrical signals into or from a cardiac pacing device electrode.

14. Method of assembling a device (1) according to any one of claims 1 to 12, characterized in that the receiving portion (5) for a means of temporary electrical connection (6) is fixed on the body (4) of said device (1).

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