An assembly jig for an electrode lead

Abstract

The application discloses an electrode wire assembling tool, which comprises a base, a wire main body groove and an assembling part groove at one end of the wire main body groove are arranged on the base; a pressing tool is installed on the base and comprises a pressing end on the wire main body groove and a driving part for driving the pressing end to press the wire main body segment; a pushing device comprises a force transmission part with one end extending into the assembling part groove and a force applying part abutting against the other end of the force transmission part and elastically driving the force transmission part to be close to the wire main body groove. The pressing end can press the wire main body segment on the wire main body groove under the action of the driving part, the force transmission part can abut the assembling part groove against the end of the wire main body segment under the action of the axial force provided by the force applying part, and the wire main body segment and the assembling part are prevented from loosening during the adhesive fixing. Through the cooperation of the pressing tool and the pushing device, the wire main body segments with different outer diameter specifications can be pressed on the base, and the assembling tool can also be applied to the assembling between the electrode wire parts with different outer diameters.

Description

Technical Field

[0001] This invention relates to the field of implantable electronic medical device technology, and more specifically to an assembly fixture for electrode leads. Background Technology

[0002] An implantable pacemaker is an electronic therapeutic device implanted permanently in a patient's body. It delivers battery-powered electrical pulses via a pulse generator, which are conducted through electrode leads to stimulate the myocardium in contact with the electrodes, causing the heart to beat and contract. This achieves the purpose of treating cardiac dysfunction caused by certain arrhythmias. The pacing electrode lead is a medical implantable lead that connects at one end to the pacemaker, defibrillator, or other electrical stimulation medical device, and at the other end directly to the heart or other sites requiring electrical stimulation. The electrical signals emitted by the medical stimulation device are transmitted to the cardiac structures to be stimulated through the lead.

[0003] Electrode leads generally consist of an electrode, a lead, and a connector. The electrode is the non-insulated end of the lead that comes into direct contact with the heart, while the connector is another non-insulated end that connects the lead to electrical stimulation medical devices such as pacemakers and defibrillators. Currently, pacing electrode leads are mainly divided into active electrode leads and passive electrode leads. Passive electrode leads have barbed structures on their electrodes, allowing them to be directly attached to the trabeculae of the myocardium. Over time, the electrode is encased in the myocardium and gradually stabilizes. Active electrode leads have a helical structure on their electrodes. By rotating the connector pin at the connector end, the outer spiral of the electrode is driven into the myocardium and fixed in the atrium or ventricle.

[0004] Electrode leads can be mainly divided into connector parts, electrode lead body sections, and electrode head parts. While the outer diameter of electrode leads is relatively small, generally around 2mm, their internal structure is complex, typically consisting of an outer insulation layer, outer multi-strand wires, an inner insulation layer, and inner multi-strand wires. The components of electrode leads are numerous and small. Currently, the assembly process of electrode leads is mainly done manually, with key assembly techniques including laser welding, resistance welding, and bonding curing, requiring a high level of skill from the operators. The parts requiring bonding are the connector part and the electrode lead body section, and the electrode lead body section and the electrode head section.

[0005] When assembling and bonding the various components of electrode leads, purely manual operation requires highly skilled operators, is difficult to perform, and the transfer process after assembly is prone to causing electrode lead components to detach, resulting in a low assembly pass rate. Current methods for bonding and assembling electrode lead components generally involve applying a biocompatible silicone adhesive to the interface of the parts to be bonded, then assembling them to ensure the interface adheres, applying force to the interface to ensure a tight seal and prevent detachment or gaps, and finally transferring the electrode lead to an oven for heat curing. However, due to the potential differences in assembly components between different electrode lead models, a single tooling may not be sufficient for assembling different models; or dimensional differences between components of the same electrode lead model may require different tooling for assembly, resulting in numerous tooling options, waste, difficulties in production management, and a high risk of misuse. Summary of the Invention

[0006] Therefore, the purpose of this invention is to overcome the problem that the existing electrode wire assembly fixtures have a single function and cannot meet the assembly requirements of different types of electrode wires, thereby providing an electrode wire assembly fixture.

[0007] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0008] An assembly fixture for an electrode wire, the electrode wire comprising a wire body segment and an assembly fitting connected to the end of the wire body segment; the assembly fixture includes:

[0009] The base has a conductor body groove suitable for accommodating the conductor body segment and an assembly groove located at one end of the conductor body groove along its length and suitable for accommodating the assembly.

[0010] A clamping fixture, installed on the base, includes a clamping end located above the main wire groove and a driving component that drives the clamping end to clamp the main wire section onto the main wire groove;

[0011] The pushing device includes a force transmission component mounted on the base and one end extending into the assembly slot, and a force application component that abuts against the other end of the force transmission component and whose elastic force drives the force transmission component to approach the wire body slot along the axial direction of the wire body slot.

[0012] Furthermore, a stepped structure suitable for positioning the assembly is provided between the main wire groove and the assembly groove.

[0013] Furthermore, the base is provided with scale lines extending in the same direction as the groove of the conductor body.

[0014] Furthermore, at least two clamping fixtures are provided, and they are arranged sequentially along the length direction of the main groove of the conductor.

[0015] Furthermore, the pressing end has an arc-shaped groove on one side facing the main groove of the conductor body that is adapted to the shape of the main section of the conductor body, and the inner surface of the arc-shaped groove is provided with an elastic pad.

[0016] Furthermore, the base has a recessed structure on the side facing away from the main wire groove.

[0017] Furthermore, the clamping fixture is specifically a clamping device, which includes:

[0018] A fixing seat is fixed on the base on one side of the main groove of the wire body, and a pair of ear plates are provided thereon;

[0019] A connecting shaft passes through the shaft holes of a pair of ear plates;

[0020] The clamping seat has one end connected to the connecting shaft and can rotate about the axial direction of the connecting shaft;

[0021] The end of the clamping seat away from the connecting shaft is the clamping end;

[0022] The driving component is a permanent magnet installed on the base on the other side of the main groove of the conductor body. The clamping seat is a ferromagnet or has a ferromagnet on it. The magnetic attraction of the permanent magnet to the ferromagnet drives the clamping seat to press the main section of the conductor body downward.

[0023] Furthermore, the clamping seat closest to the assembly slot is located directly above the step structure, and the side of the clamping seat near the assembly slot and the side of the step structure near the assembly slot are on the same plane.

[0024] Furthermore, the middle part of the clamping seat is provided with an arched structure that arches outward from the side of the main groove of the conductor body.

[0025] Furthermore, the upper top surface of the permanent magnet is not higher than the upper top surface of the base.

[0026] Furthermore, the base is provided with a wire groove extending in the same direction as the main wire groove, and the fixing seat is provided with a mounting hole corresponding to the position of the wire groove. The fixing seat is fixed to the base by bolts passing through the mounting hole and extending into the wire groove.

[0027] Furthermore, the base is provided with a guide hole, and the force transmission component is a push rod passing through the guide hole; one end of the push rod extends into the mounting slot, and the other end extends outward from the outer end face of the base.

[0028] Furthermore, the push rod includes a push rod body section passing through the guide hole, a recessed end formed at one end of the push rod body section near the end of the fitting slot, and a protruding end formed at the other end of the push rod body section; the recessed end is used to abut against the end of the fitting.

[0029] Furthermore, the force-applying component is an elastic pressure plate installed on the outer end face of the base. One end of the elastic pressure plate is connected to the outer end face through a connector and can rotate around the axis of the connector.

[0030] Furthermore, one end of the elastic pressure plate is provided with a through hole and the other end is provided with an alignment point. The middle section of the elastic pressure plate is provided with an alignment point located between the through hole and the alignment point. The end of the elastic pressure plate with the through hole and the end with the alignment point are both tightly abutted against the outer end face of the base. The middle section of the elastic pressure plate with the alignment point arches away from the outer end face. The alignment point of the elastic pressure plate matches the protruding end of the push rod.

[0031] Furthermore, the outer end face of the base is provided with a recessed hole that mates with the alignment point of the elastic pressure plate.

[0032] Furthermore, the base is provided with two guide rail grooves extending in the same direction as the main groove of the wire body, and the clamping fixture is specifically a tightening device, which includes:

[0033] A pressure plate is located above a pair of guide rail grooves, and pressure plate holes are provided on both sides corresponding to the positions of the guide rail grooves; an arc-shaped concave surface is provided on the side of the pressure plate facing the main wire groove, and a buffer pad is provided on the arc-shaped concave surface; the pressing end is provided on the pressure plate;

[0034] A threaded post is fixed to the pressure plate and extends in a direction away from the groove of the conductor body;

[0035] A tightening bracket, which has a tightening bracket hole for the threaded post to pass through;

[0036] The guide post is fixedly connected to the tightening frame, and one end extends through the pressure plate hole into the guide rail groove;

[0037] A spring is sleeved on the guide post and elastically supported between the pressure plate and the tightening frame;

[0038] The knob is located on the side of the tightening frame facing away from the pressure plate, and it engages with the threaded post through a knob hole; the knob is the driving component.

[0039] The technical solution of this invention has the following advantages:

[0040] 1. The electrode wire assembly fixture provided by this invention, through the cooperation of the clamping end on the clamping fixture and the driving component, allows the clamping end to press the main body segment of the electrode wire onto the wire body groove. Under the axial force provided by the force-applying component, the force transmission component can press the fitting in the fitting groove against the end of the main body segment of the wire, preventing the main body segment of the wire and the fitting from loosening during bonding and fixing. By cooperating with the clamping fixture and the pushing device, main body segments of wires with different outer diameters can be pressed onto the base, and it is also applicable to the assembly of electrode wire components with different outer diameters.

[0041] 2. The assembly fixture for electrode wires provided by the present invention has a stepped structure between the wire body groove and the assembly part groove, which facilitates the positioning of the assembly part.

[0042] 3. The electrode wire assembly fixture provided by the present invention has a scale line on the base for displaying and reading the length of the main wire segment on the main wire slot, so as to prevent the wrong parts from being used during the assembly process and to provide a measurement prompt.

[0043] 4. The electrode wire assembly fixture provided by the present invention includes multiple clamping fixtures arranged sequentially along the length direction of the wire body groove, which can clamp the wire body section at different positions, improve the clamping effect, and prevent the wire body section from loosening.

[0044] 5. The assembly fixture for the electrode wire provided by the present invention has an arc-shaped groove on the clamping end that is adapted to the shape of the main body of the wire, and an elastic pad is provided on the inner surface of the arc-shaped groove. Since the elastic pad has a certain elasticity, it can prevent the clamping end from damaging the main body of the wire when pressing it. Moreover, the elastic pad has a strong coefficient of friction and can provide a strong static friction force when pressing the main body of the wire to prevent axial movement of the main body of the wire.

[0045] 6. The assembly fixture for electrode wires provided by the present invention has a recessed structure on the base, which can significantly reduce the weight of the assembly fixture and facilitate its handling.

[0046] 7. The electrode wire assembly fixture provided by this invention allows for adjustment of the distance between the distal clamping end and the permanent magnet during the rotation of the clamping seat around the connecting shaft. This controls the magnetic force between the permanent magnet and the clamping seat. When the clamping end approaches the permanent magnet, the attraction force of the permanent magnet on the clamping end increases, causing the clamping seat to press downwards. The electrode wire is fixed by the static friction between the elastic pad and the main body of the wire. When assembling electrode wires with smaller outer diameters, the clamping end of the clamping device can make transitional contact with the permanent magnet, ensuring that the elastic pad can press the main body of the wire, thus fixing the small-diameter wire body. When assembling electrode wires with larger outer diameters, the clamping seat presses downwards. Due to the characteristics of magnetic force, the clamping end and the permanent magnet are brought close together without contact, allowing the elastic pad on the clamping seat to press downwards and fix the main body of the wire, thus fixing the electrode wire. In practical applications, this design is applicable to electrode wires of different outer diameter specifications, eliminating the need for frequent changes of tooling components.

[0047] 8. The assembly fixture for electrode wires provided by the present invention has the side of the clamping seat closest to the assembly slot and the side of the stepped structure located on the same plane. The side of the clamping seat and the side of the stepped structure form a concentric circle, which facilitates locking the welding seat step on the assembly.

[0048] 9. The assembly fixture for electrode wires provided by the present invention has an arched structure in the middle of the clamping seat, so that the clamping end at the far end of the clamping seat can be closer to the wire body groove, making it easier for the clamping end to press the wire body section onto the base.

[0049] 10. The assembly fixture for electrode wires provided by the present invention has an upper top surface of the permanent magnet that is not higher than the upper top surface of the base. When assembling electrode wires with a small outer diameter, the clamping end can make transitional contact with the permanent magnet, which can ensure that the elastic pad can clamp the main body segment of the wire, thereby fixing the main body segment of the small outer diameter wire.

[0050] 11. The assembly fixture for the electrode wire provided by the present invention has a fixing seat fixed to the base by bolts passing through the mounting hole and extending into the wire groove. The fixing seat and the clamping device can be moved horizontally along the wire groove to be adjusted to a suitable position.

[0051] 12. The electrode wire assembly fixture provided by the present invention allows the push rod to move axially in the guide hole after the electrode wire is assembled on the base. The push rod can provide a clamping force at one end of the assembly to prevent loosening between the assembly and the main body of the wire, thereby improving the bonding reliability between the main body of the wire and the assembly.

[0052] 13. The electrode wire assembly fixture provided by the present invention has a recessed end on the push rod that abuts against the end of the assembly, which can improve the stability and reliability of the force applied by the push rod to the assembly.

[0053] 14. The assembly fixture for electrode wires provided by the present invention has one end of an elastic pressure plate connected to the outer end face through a connector and rotatable around the axis of the connector. The elastic force of the elastic pressure plate itself can provide an axial inward force to the push rod to press the assembly. The structural design of the elastic pressure plate being rotatable around the connector can avoid the recessed end of the push rod from interfering with the assembly and affecting the assembly process.

[0054] 15. The assembly fixture for electrode wires provided by the present invention has an alignment point of the elastic pressure plate that matches the protruding end of the push rod, so as to simplify the operator's operation during assembly and prevent the elastic pressure plate from accidentally shifting after assembly.

[0055] 16. The assembly fixture for the electrode wire provided by the present invention has a recessed hole on the outer end face of the base that matches the alignment point of the elastic pressure plate, which facilitates quick assembly by the operator during the assembly process and further prevents the elastic pressure plate from accidentally shifting.

[0056] 17. The electrode wire assembly fixture provided by this invention, by rotating a knob, moves the tightening frame downwards, causing the tightening frame and the pressure plate to press close together. Simultaneously, a spring is compressed. The compressed spring, due to its elastic deformation, generates a spring force, exerting downward pressure on the upper surface of the pressure plate. The buffer pad on the pressure plate then presses the main wire section located in the wire body groove, thus fixing it in place. The static friction force of the tightening device on the main wire section can be controlled by adjusting the spring compression amount with the knob. This allows for application to products or components with different outer diameters, and also allows for adjustment of the required fixing pressure.

[0057] In summary, the electrode lead assembly fixture provided by this invention is applicable to the assembly of electrode leads required for cardiac pacemakers, implantable cardioverter-defibrillators (ICDs), cardiac resynchronization therapy defibrillators (CRT-D), and cardiac resynchronization therapy pacemakers (CRT-P). It solves the current problem of a lack of relevant bonding and assembly fixtures in the electrode lead technology field, and the difficulty of manually assembling the small and delicate electrode lead components, thus filling the gap in electrode lead bonding and assembly fixtures. Furthermore, the assembly and fixation of the electrode leads on the fixture is simple, requiring no additional fixing tools. The electrode leads can be quickly fixed by applying static friction force to the surface of the lead body section through a clamping or tightening device. The end face of the electrode lead can be quickly fixed and maintained by providing an inward clamping force to the push rod through an elastic pressure plate on the base assembly end. In addition, the assembly fixture can also facilitate the transport of the electrode leads during transfer. After assembly, the electrode leads need to be transferred to an oven for curing. Multiple clamping or tightening devices on the assembly fixture can fix the lead body section, preventing the electrode leads from falling off during transfer. Attached Figure Description

[0058] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0059] Figure 1 A schematic diagram of an active pacing electrode lead with an electrode lead assembled according to an embodiment of the present invention is shown.

[0060] Figure 2 A structural diagram of the assembly (connector) is shown;

[0061] Figure 3 This is a schematic diagram of the overall structure of the assembly tooling provided in Embodiment 1 of the present invention;

[0062] Figure 4 This is a schematic diagram of the back of the assembly tooling provided in Embodiment 1 of the present invention;

[0063] Figure 5 This is a schematic diagram of the clamping fixture provided in Embodiment 1 of the present invention;

[0064] Figure 6 This is a schematic diagram of the push rod provided in Embodiment 1 of the present invention;

[0065] Figure 7 This is a schematic diagram of the structure of the elastic compression sheet provided in Embodiment 1 of the present invention;

[0066] Figure 8 This is a schematic diagram of the end of the assembly tooling provided in Embodiment 1 of the present invention;

[0067] Figure 9 This is a schematic diagram of the first state in which the assembly is installed in the assembly slot according to Embodiment 1 of the present invention;

[0068] Figure 10 This is a schematic diagram of the second state in which the assembly is installed in the assembly slot in Embodiment 1 of the present invention;

[0069] Figure 11 This is a schematic diagram of the cooperation between the clamping fixture and the permanent magnet in Embodiment 1 of the present invention;

[0070] Figure 12 This is a schematic diagram of the assembly tooling in Embodiment 2 of the present invention;

[0071] Figure 13 This is an exploded view of the clamping fixture in Embodiment 2 of the present invention.

[0072] Explanation of reference numerals in the attached drawings: 10. Base; 11. Main wire groove; 12. Assembly groove; 13. Stepped structure; 14. Scale line; 15. Recessed structure; 16. Wire groove; 17. Guide hole; 18. Outer end face; 181. Recessed hole; 19. Guide rail groove; 20. Clamping device; 21. Fixing seat; 211. Mounting hole; 22. Ear plate; 23. Connecting shaft; 24. Clamping seat; 241. Clamping end; 242. Side; 243. Arched structure; 25. Elastic pad; 26. Bolt; 27. Permanent magnet; 31. Push rod; 311. Main push rod section; 312. Recessed end; 313. Protruding end; 32. Elastic pressure 321. Plate; 322. Alignment point; 323. Aligned point; 33. Connector; 40. Tightening device; 41. Pressure plate; 411. Pressure plate hole; 412. Arc-shaped concave surface; 42. Buffer pad; 43. Threaded post; 44. Tightening bracket; 441. Tightening bracket hole; 45. Guide post; 46. Spring; 47. Knob; 471. Knob hole; 5. Electrode wire; 51. Wire body section; 52. Connector; 521. Welding seat; 5211. Welding seat adhesive end; 5212. Welding seat step; 522. Insulator; 5221. Insulator adhesive end; 5222. Insulator head end; 53. Electrode head. Detailed Implementation

[0073] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0075] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0076] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0077] Figure 1 A schematic diagram of an active pacing electrode lead with the electrode leads assembled according to an embodiment of the present invention is shown. The pacing electrode lead 5 is mainly divided into three parts: a connector 52, an electrode tip 53, and a lead body segment 51. In actual production, the assembly process of the electrode lead 5 includes the assembly of the connector 52 and the lead body segment 51, and the assembly of the lead body segment 51 and the electrode tip 53. The assembly process includes, but is not limited to, laser welding, spot welding, and adhesive curing.

[0078] Figure 2 A structural schematic diagram of connector 52 is shown; connector 52, as an assembly component, is bonded and assembled with the main conductor segment 51 on an assembly fixture. Connector 52 includes a solder base 521 and an insulating component 522. The solder base 521 is located on the side of the insulating component 522 closer to the main conductor segment 51; the end of the insulating component 522 near the solder base 521 is the insulating component bonding end 5221, and the end of the solder base 521 near the insulating component 522 is the insulating component bonding end 5211. A biocompatible silicone adhesive is applied to the insulating component bonding end 5221, and the insulating component bonding end 5221 and the solder base bonding end 5211 are axially mated.

[0079] Example 1

[0080] like Figure 3 -11 shows an assembly fixture for an electrode wire. The assembly fixture includes a base 10 and a clamping device 20 and a pushing device disposed on the base 10. (Combined) Figure 1The base 10 serves as a carrier for placing the electrode wire 5 components during assembly and can also be used for transportation during the transfer of the electrode wire 5. The base 10 has a wire body groove 11 suitable for accommodating the wire body segment 51, and an assembly groove 12 located at one end of the wire body groove 11 along its length and suitable for accommodating the connector 52 or electrode head 53; the wire body groove 11 and the assembly groove 12 are coaxial and interconnected. The wire body groove 11 supports the wire body segment 51, and the assembly groove 12 supports the connector 52 or electrode head 53 that is bonded and assembled with the wire body segment 51.

[0081] The clamping device 20 is used to clamp the main body segment 51 of the conductor, and serves to fix the electrode conductor 5 during bonding. The clamping device 20 includes a clamping end 241 located above the conductor body groove 11 and a driving member that drives the clamping end 241 to clamp the main body segment 51 onto the conductor body groove 11. The pushing device includes a push rod 31 mounted on the base 10 with one end extending into the fitting groove 12, and an elastic pressure plate 32 that abuts against the other end of the push rod 31 and whose elastic force drives the push rod 31 to approach the conductor body groove 11 along the axial direction of the conductor body groove 11.

[0082] This electrode wire assembly fixture, through the cooperation of the clamping end 241 on the clamping device 10 and the driving component, allows the clamping end 241 to press the main body segment 51 of the electrode wire 5 onto the main body groove 11. Under the axial force provided by the elastic pressure plate 32, the push rod 31 can press the connector 52 or electrode head 53 in the assembly slot 12 against the end of the main body segment 11, preventing the main body segment 51 and the connector 52 or electrode head 53 from loosening during bonding and fixing. Through the cooperation of the clamping device 10 and the push device, main body segments 51 of different outer diameters can be pressed onto the base 10, and it can also be used for the assembly of different outer diameter components of the electrode wire 10.

[0083] Reference Figure 1 and Figure 3 Three clamping devices 20 are arranged sequentially along the length of the conductor body groove 11. The three clamping devices 20 can clamp the conductor body section 51 at different positions to improve the clamping effect and prevent the electrode conductor 5 from loosening. Among them, two clamping devices 20 fix the conductor body section 51 and the connector 52 of the electrode conductor 5 respectively to prevent the electrode conductor 5 from sliding or falling off during the transfer process.

[0084] Reference Figure 2 and Figure 3There is a stepped structure 13 between the assembly slot 12 and the wire body slot 11. The stepped structure 13 is used to position the connector 52 or the electrode head 53. For example, when the connector 52 is placed in the assembly slot 12, the insulating part 522 is placed in the assembly slot 12, and the welding seat step 5212 on the welding seat 521 and the stepped structure 13 engage with each other.

[0085] Reference Figure 3 , Figure 8 and Figure 9 The base 10 is provided with scale lines 14 extending in the same direction as the wire body groove 11. The scale lines 14 are used to display the length of the wire body segment 51 on the wire body groove 11 to prevent the wrong parts from being used during assembly and to provide measurement guidance.

[0086] Reference Figure 4 The base 10 has a recessed structure 15 on the side facing away from the wire body groove 11. Since the electrode wire components are relatively small, the load-bearing requirements for the electrode wire bonding fixture are very low. Processing the back of the base 10 into a recessed structure 15 can significantly reduce the weight of the assembly fixture, facilitating its handling. In some preferred embodiments, the base 10 is preferably made of high-temperature resistant rigid plastic materials such as polyoxymethylene (POM) or lightweight metal materials such as aluminum alloy.

[0087] Reference Figure 5 The clamping device 20 includes a fixed base 21, a connecting shaft 23, and a clamping seat 24. The fixed base 21 is fixed to a base 10 on one side of the wire body groove 11, and one end of the fixed base 21 has a pair of arc-shaped lugs 22 integrally formed. The connecting shaft 23 passes through the shaft holes of the pair of lugs 22. One end of the clamping seat 24 is fixedly connected to the connecting shaft 23 and can rotate about the axial direction of the connecting shaft 23. The end of the clamping seat 24 away from the connecting shaft 23 is the clamping end 241. Figure 3 and Figure 9 The driving component is specifically a permanent magnet 17 mounted on a base 10 on the other side of the main conductor groove 11. The permanent magnet 17 is longitudinally arranged on the base 10 along the length of the main conductor groove 11. The clamping seat 24 is a ferromagnetic material or has a ferromagnetic material on it. The magnetic attraction of the permanent magnet 17 to the ferromagnetic material drives the clamping seat 24 to press the main conductor section 11 downward. In some specific embodiments, the material of the clamping seat 24 is preferably a ferromagnetic material such as iron-chromium-cobalt, aluminum-nickel-cobalt, neodymium-iron-boron, or ferrite, and the permanent magnet 27 is specifically a ferromagnetic material. Preferably, the upper top surface of the permanent magnet 27 is not higher than the upper top surface of the base, and the permanent magnet 27 is embedded in the base 10.

[0088] Reference Figure 5The pressing end 241 has an arc-shaped groove on the side facing the conductor body groove 11 that matches the shape of the conductor body section 51. The inner surface of the arc-shaped groove is provided with an elastic pad 25. The elastic pad 25 is made of silicone rubber and has a certain rubber elasticity, which can prevent the pressing end 241 from damaging the conductor body section 51 when pressing it. Moreover, the elastic pad 25 has a strong coefficient of friction and can provide a strong static friction force when pressing the conductor body section 51 to prevent axial movement of the conductor body section 51.

[0089] Reference Figure 5 , Figure 8 and Figure 9 The middle part of the clamping seat 24 is provided with an arched structure that arches outward from the main conductor groove 11; the arched structure allows the clamping end 241 at the far end of the clamping seat 24 to be closer to the main conductor groove 11, so that the clamping end 241 can press the main conductor section 51 onto the base 10.

[0090] In this clamping device 20, the distance between the clamping end 241 and the permanent magnet 27 can be adjusted during the rotation of the clamping seat 24 around the connecting shaft 23, thereby controlling the magnetic force between the permanent magnet 27 and the clamping seat 24. When the clamping end 241 approaches the permanent magnet 27, the attraction force of the permanent magnet 27 on the clamping end 241 increases, causing the clamping seat 24 to press downwards. The electrode wire 5 is fixed by the static friction force between the elastic pad 25 and the main body segment 51 of the wire. When assembling the electrode wire 5 with a smaller outer diameter, the clamping end 241 of the clamping device 20 can make transitional contact with the permanent magnet 27, ensuring that the elastic pad 25 can press downwards to the main body segment 51 of the wire, thereby fixing the small outer diameter main body segment 51 of the wire. When assembling electrode wires 5 with larger outer diameters, the clamping seat 24 presses downwards. Due to the characteristics of magnetic force, the clamping end 241 and the permanent magnet 27 are brought close together without contact, allowing the elastic pad 25 on the clamping seat 24 to press downwards and tighten the main body section 51 of the wire, thus fixing the electrode wire 5. In practical applications, this design can be used for electrode wires 5 with different outer diameter specifications, eliminating the need for frequent changes of tooling accessories.

[0091] Reference Figure 5 and Figure 8 The base 10 has a wire groove 16 extending in the same direction as the wire body groove 11. The fixing seat 21 has a pair of mounting holes 211 corresponding to the position of the wire groove 16. The fixing seat 21 is fixed to the base 10 by bolts 26 passing through the mounting holes 211 and extending into the wire groove. In this way, the fixing seat 21 and the clamping device 20 can be moved horizontally along the wire groove 16 to be adjusted to a suitable position.

[0092] Reference Figure 2 , Figure 9 and Figure 10 The clamping seat 21 closest to the assembly slot 12 is located directly above the step structure 14, and the side 242 of the clamping seat 24 near the assembly slot and the side of the step structure 14 near the assembly slot 12 are on the same plane. The side 242 of the clamping seat 24 and the side of the step structure 14 form a concentric circle, which facilitates locking the welding seat step 5212 on the assembly.

[0093] Reference Figure 3 , Figure 8 and Figure 9 The base 10 has a guide hole 17 at one end, and the push rod 31 passes through the guide hole 17. One end of the push rod 31 extends into the fitting slot 12, and the other end extends outward from the outer end face 18 of the base 10. The push rod 31 can move axially in the guide hole 17, and the push rod 31 can provide a clamping force at one end of the fitting to prevent loosening between the fitting and the main conductor section 51, thereby improving the bonding reliability between the main conductor section 51 and the fitting.

[0094] Reference Figure 6 and Figure 8 The push rod 31 includes a push rod body section 311 passing through the guide hole 17, a recessed end 312 formed at one end of the push rod body section 311 near the assembly slot 12, and a protruding end 313 formed at the other end of the push rod body section 311; the recessed end 312 is used to abut against the end 5222 of the insulating component. The recessed end 312 on the push rod 31 can improve the stability and reliability of the force applied by the push rod 31 to the assembly. The outer diameter of the push rod body section 311 is slightly smaller than the inner diameter of the guide hole 17 to ensure that the push rod 31 can move axially in the guide hole 17.

[0095] Reference Figure 3 , Figure 8 and Figure 9 The elastic pressure plate 32 can be made of stainless steel or other metals with good elasticity. The elastic pressure plate 32 is mounted on the outer end face 18 of the base 10. One end of the elastic pressure plate 32 is connected to the outer end face 18 via a connector 33 and can rotate around the axis of the connector 33; the connector 33 is specifically a bolt. The elastic force of the elastic pressure plate 32 itself can provide an axial inward force to the push rod 31 to press the assembly. The rotatable design of the elastic pressure plate 32 around the connector 33 can prevent the recessed end 312 of the push rod 31 from interfering with the assembly and affecting the assembly process.

[0096] Reference Figure 7 and Figure 8The elastic pressure plate 32 has a through hole 321 at one end and an alignment point 322 at the other end. The middle section of the elastic pressure plate has an alignment point 323 located between the through hole 321 and the alignment point 322. Both the end of the elastic pressure plate 32 with the through hole 321 and the end with the alignment point 322 are tightly abutted against the outer end face 18 of the base 10. The middle section of the elastic pressure plate 32 with the alignment point 323 arches away from the outer end face. The alignment point 323 of the elastic pressure plate 32 matches the protruding end 313 of the push rod 31, which simplifies the operator's assembly process and prevents accidental displacement of the elastic pressure plate 32 after assembly. In an alternative embodiment, the elastic pressure plate 32 can also be vertically lifted upwards using the connecting member 33 as a fixing point.

[0097] Reference Figure 8 The outer end face 18 of the base 10 is provided with a recess 181 that mates with the alignment point 322 of the elastic pressure plate 32. The recess 181 is provided to facilitate quick assembly by the operator during the assembly process and to further prevent the elastic pressure plate 32 from accidentally shifting.

[0098] Reference Figure 2 , Figure 8 and Figure 10 The electrode wire 5 is fixed to the electrode wire bonding assembly fixture, and the connector 52 is fixed to the assembly slot 12 and the wire body slot 11. The insulating part 522 is fixed in the assembly slot 12, and the end 5222 of the insulating part abuts against the recessed end 312 of the push rod 31. The elastic pressure plate 32 is moved so that its alignment point 322 fits into the recessed hole 181 on the outer end face 18. The alignment point 323 on the elastic pressure plate 32 abuts against the protruding end 313 of the push rod 31, providing an axial inward force to the push rod 31, so that the push rod 31 axially fixes the insulating part 522.

[0099] Example 2

[0100] like Figure 12The electrode wire assembly fixture shown in Figure 13 differs from that in Embodiment 1 in that the base 10 has two guide rail grooves 19 extending in the same direction as the wire body groove 11, and the clamping fixture is specifically a tightening device 40. The tightening device 40 includes a pressure plate 41, a buffer pad 42, a threaded post 43, a tightening frame 44, a guide post 45, a spring 46, and a knob 47. The pressure plate 41 spans above the pair of guide rail grooves 19, and pressure plate holes 411 corresponding to the positions of the guide rail grooves 19 are opened on both sides of the pressure plate 41; the side of the pressure plate 41 facing the wire body groove 11 has an arc-shaped concave surface 412, and a buffer pad 42 is provided on the arc-shaped concave surface 412; the clamping end is the lower end face of the pressure plate 41 facing the wire body groove 11. The threaded post 43 is fixed to the pressure plate 41 and extends in the direction opposite to the main wire groove 11. The tightening frame 44 has a tightening frame hole 441 through which the threaded post 43 passes. The guide post 45 is fixedly connected to the tightening frame 44, and one end extends through the hole in the pressure plate 41 into the guide rail groove 19. The spring 46 is sleeved on the guide post 45 and elastically supported between the pressure plate 41 and the tightening frame 44. The knob 47 is located on the side of the tightening frame 44 opposite to the pressure plate 41 and is threadedly engaged with the threaded post 43 through the knob hole 471 on it. The knob 47 is the driving component of the tightening device 40. It can be understood that the compression force of the spring 46 can be selected and replaced according to the actual application.

[0101] This tightening device 40, by rotating the knob 47, moves the tightening frame 44 downward, causing the tightening frame 44 and the pressure plate 41 to press close together. Simultaneously, the spring 46 is compressed. The compressed spring 46, due to its elastic deformation, generates a spring force, exerting downward pressure on the upper surface of the pressure plate 41. The buffer pad 42 on the pressure plate 41 then presses the wire body segment 51, located in the wire body groove 11, thus securing it. The static friction force of the tightening device 40 on the wire body segment 51 can be controlled by adjusting the compression of the spring 46 via the knob 47. This allows it to be applied to products or components with different outer diameters, and also allows for adjustment of the required fixing pressure.

[0102] In summary, the electrode lead assembly fixture provided in this embodiment of the invention is applicable to the assembly of electrode leads required for cardiac pacemakers, implantable cardioverter-defibrillators (ICDs), cardiac resynchronization therapy defibrillators (CRT-D), and cardiac resynchronization therapy pacemakers (CRT-P). It solves the current problem of a lack of relevant bonding and assembly fixtures in the electrode lead technology field, and the difficulty of manually assembling the small and delicate electrode lead components, thus filling the gap in electrode lead bonding and assembly fixtures. Furthermore, the assembly and fixing of the electrode leads on the fixture is simple, requiring no additional fixing tools. The electrode lead 5 can be quickly fixed by the static friction force applied to the surface of the lead body section 51 by the clamping device 20 or the tightening device 40; the end face of the electrode lead 5 can be quickly fixed and maintained by the inward clamping force provided to the push rod 31 by the elastic pressure plate 32 on the mounting end of the base 10. In addition, the assembly fixture can also realize the transportation function of the electrode wire 5 during the transfer process. After assembly, the electrode wire 5 needs to be transferred to the oven for curing. Multiple clamping devices 20 or tightening devices 40 on the assembly fixture can fix the main body of the wire and prevent the electrode wire from falling off during the transfer process.

[0103] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An assembly fixture for an electrode wire, the electrode wire (5) comprising a wire body segment (51) and an assembly fitting connected to the end of the wire body segment (51); characterized in that, The assembly fixture includes: A base (10) is provided with a wire body groove (11) suitable for accommodating the wire body segment (51) and an assembly groove (12) located at one end of the wire body groove (11) in the length direction and suitable for accommodating the assembly; a step structure (13) suitable for positioning the assembly is provided between the wire body groove (11) and the assembly groove (12). A clamping fixture is installed on the base (10) and includes a clamping end (241) located above the conductor body groove (11) and a driving member that drives the clamping end (241) to clamp the conductor body segment (51) onto the conductor body groove (11); The pushing device includes a force transmission member mounted on the base (10) and one end extending into the assembly slot (12), and a force application member that abuts against the other end of the force transmission member and whose elastic force drives the force transmission member to approach the wire body slot (11) along the axial direction of the wire body slot (11). The base (10) is provided with a guide hole (17), and the force transmission component is a push rod (31) passing through the guide hole (17); one end of the push rod (31) extends into the assembly slot (12), and the other end extends outward from the outer end face (18) of the base (10); The force-applying component is an elastic pressure plate (32) installed on the outer end face (18) of the base (10). One end of the elastic pressure plate (32) is connected to the outer end face (18) through a connector (33) and can rotate around the axis of the connector (33). One end of the elastic pressure plate (32) is provided with a through hole (321) and the other end is provided with an alignment point (322). The middle section of the elastic pressure plate (32) is provided with an alignment point (323) located between the through hole (321) and the alignment point (322). The end of the elastic pressure plate (32) with the through hole (321) and the end with the alignment point (322) are both tightly abutted against the outer end face (18) of the base (10). The middle section of the elastic pressure plate (32) with the alignment point (323) arches away from the outer end face (18). The alignment point (323) of the elastic pressure plate (32) matches the protruding end (313) of the push rod (31). The outer end face (18) of the base (10) is provided with a recess (181) that matches the alignment point (322) of the elastic pressure plate (32).

2. The assembly fixture for the electrode wires according to claim 1, characterized in that, The base (10) is provided with scale lines (14) extending in the same direction as the main groove (11) of the conductor body.

3. The assembly fixture for the electrode wires according to claim 1, characterized in that, At least two clamping fixtures are provided and arranged sequentially along the length of the main groove (11) of the conductor.

4. The assembly fixture for the electrode wires according to claim 1, characterized in that, The clamping end (241) has an arc-shaped groove on one side (242) facing the main groove (11) of the conductor body, which is adapted to the shape of the main section (51) of the conductor body, and the inner surface of the arc-shaped groove is provided with an elastic pad (25).

5. The assembly fixture for the electrode wires according to claim 1, characterized in that, The base (10) has a recessed structure (15) on one side (242) facing away from the main groove (11) of the conductor body.

6. The assembly fixture for the electrode wires according to claim 1, characterized in that, The clamping fixture is specifically a clamping device (20), which includes: A fixing seat (21) is fixed on the base (10) on one side of the main wire groove (11), and a pair of ear plates (22) are provided thereon; A connecting shaft (23) is inserted between the shaft holes of a pair of ear plates (22); The clamping seat (24) is connected at one end to the connecting shaft (23) and can rotate about the axial direction of the connecting shaft (23); The end of the clamping seat (24) away from the connecting shaft (23) is the clamping end (241); The driving component is a permanent magnet (27) installed on the base (10) on the other side of the main groove (11) of the conductor body. The clamping seat (24) is a ferromagnet or has a ferromagnet on it. The magnetic attraction of the permanent magnet (27) to the ferromagnet drives the clamping seat (24) to press down on the main section (51) of the conductor body.

7. The assembly fixture for electrode wires according to claim 6, characterized in that, The clamping seat (24) closest to the assembly slot (12) is located directly above the step structure (13), and the side (242) of the clamping seat (24) near the assembly slot (12) and the side of the step structure (13) near the assembly slot (12) are on the same plane.

8. The assembly fixture for electrode wires according to claim 6, characterized in that, The clamping seat (24) has an arched structure (243) in the middle that arches outward from the main groove (11) of the conductor.

9. The assembly fixture for electrode wires according to claim 6, characterized in that, The top surface of the permanent magnet (27) is not higher than the top surface of the base (10).

10. The assembly fixture for electrode wires according to claim 6, characterized in that, The base (10) is provided with a wire groove (16) extending in the same direction as the main wire groove (11). The fixing seat (21) is provided with a mounting hole (211) corresponding to the position of the wire groove (16). The fixing seat (21) is fixed to the base (10) by a bolt (26) passing through the mounting hole (211) and extending into the wire groove (16).

11. The assembly fixture for electrode wires according to claim 1, characterized in that, The push rod (31) includes a main body section of the push rod (31) passing through the guide hole (17), a recessed end (312) formed at one end of the main body section of the push rod (31) near the end of the fitting slot (12), and a protruding end (313) formed at the other end of the main body section of the push rod (31); the recessed end (312) is used to abut against the end of the fitting.

12. The assembly fixture for the electrode wires according to claim 1, characterized in that, The base (10) is provided with two guide rail grooves (19) extending in the same direction as the main wire groove (11). The clamping fixture is specifically a tightening device (40), which includes: A pressure plate (41) is located above a pair of guide rail grooves (19), and pressure plate holes (411) are provided on both sides corresponding to the positions of the guide rail grooves (19); an arc-shaped concave surface (412) is provided on the side of the pressure plate (41) facing the main wire groove (11), and a buffer pad (42) is provided on the arc-shaped concave surface (412); the pressing end (241) is provided on the pressure plate (41); A threaded post (43) is fixed on the pressure plate (41) and extends in a direction away from the main wire groove (11); A tightening bracket (44) is provided with a tightening bracket hole (441) through which the threaded post (43) passes; The guide post (45) is fixedly connected to the tightening frame (44) and one end extends through the pressure plate hole (411) into the guide rail groove (19); A spring (46) is sleeved on the guide post (45) and elastically supported between the pressure plate (41) and the tightening frame (44); The knob (47) is located on the side of the tightening bracket (44) facing away from the pressure plate (41), and is threadedly engaged with the threaded post (43) through the knob hole (471) on it; the knob (47) is the driving component.

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