Implantable lead torque transmission tool

Abstract

The present invention relates to a torque delivery tool including a drive probe and a wire-probe locking tool. The drive probe includes a probe body extending along a longitudinal axis to a probe tip, and a protrusion extending laterally outward from the probe body. The wire-probe locking tool includes a tool body having a body wall extending around a central cavity. The central cavity extends along a longitudinal axis from a distal tool end to a proximal tool end. The central cavity includes a connector body sub-section sized to accommodate a connector body of an implantable lead. The central cavity includes a pin sub-section sized to accommodate a connector pin of the implantable lead. A lateral space extends through the body wall from the central cavity to accommodate the protrusion of the drive probe.

Description

Technical Field

[0001] This disclosure relates to wires for conducting electrical signals to and from target tissue. More specifically, embodiments relating to accessories for use with implantable wires for delivering charge to cardiac tissue are disclosed. Background Technology

[0002] Cardiac pacing via an artificial pacemaker provides electrical stimulation to the heart when the heart's natural pacing function and / or conduction system are unable to provide synchronized atrial and ventricular contractions at a heart rate and intervals sufficient to maintain a healthy heart rate. This bradycardia pacing has relieved symptoms and even provided life support for thousands of patients. Cardiac pacing can also provide electrical overdrive stimulation to suppress or reverse tachyarrhythmias, again relieving symptoms and preventing or terminating arrhythmias that could lead to sudden cardiac death.

[0003] Conduction system pacing (CSP) can use implantable leads, such as pacing or defibrillation leads, to provide an electrical connection between the artificial pacemaker and a target location in the cardiac conduction system to be stimulated. The target anatomical structure can be, for example, the His bundle of the heart. His bundle pacing of the heart is clinically effective and advantageous by providing narrow QRS complexes that influence synchronized ventricular contractions. However, His bundle pacing in or near the membranous septum of the heart has some drawbacks. Successful His bundle pacing is not always achievable. The pacing threshold is often high, sensing is challenging, and the success rate may be low.

[0004] Left bundle branch (LBB) pacing is an alternative to His bundle pacing. LBB pacing involves pacing across the His bundle towards the apex of the right ventricle. More specifically, the pacing site for LBB pacing is typically below the His bundle, located on the interventricular septum. For optimal results, the pacing site for physiological pacing in the LBB may be located relatively deeper within the interventricular septum compared to the His bundle. For LBB implantation, the physician inserts the pacing lead by manually rotating the lead body to engage the distal end deep within the interventricular septum. Torque is transmitted down the length of the flexible lead body to drive the distal end forward. Summary of the Invention

[0005] Existing methods for pacing the conduction system use existing implantable leads, such as pacing or defibrillation leads, which include fixed or extendable helical elements to engage target tissue. The target pacing site may be located deep within the ventricular septum wall. For example, the target pacing site for pacing the left bundle branch region may be several centimeters deep within the ventricular septum wall. Therefore, it may be necessary for the physician to rotate and push the implantable lead to drive it through the myocardial tissue to the target pacing site. However, existing implantable leads are designed to be flexible, and torque applied proximally to the implantable lead may be absorbed by the flexible lead body. More specifically, twisting can cause deformation, such as wrinkling, and torque can accumulate along the lead length, potentially reducing the torque reaching the distal end of the pacing lead. This deformation can be exacerbated by changes in tissue consistency, which can complicate the physician's procedure. More specifically, deformation and torque accumulation can tension the lead components and interfere with lead placement. Therefore, there is a need for an implantable lead or implantable lead system that can efficiently transmit the torque input proximally by the physician to drill the distal end of the implantable lead through the ventricular septum wall to reach the target tissue. Efficient torque delivery enables more reliable and repeatable implantation, regardless of the tissue consistency encountered by the implantable lead, thus providing physicians with more consistent implantation behavior while reducing the number of lead body rotations required to achieve implantation.

[0006] A driving probe is described. In one embodiment, the driving probe includes a probe body extending along a longitudinal axis to a probe tip. The driving probe includes a protrusion extending laterally outward from the probe body.

[0007] A lead-probe locking tool is described. In one embodiment, the lead-probe locking tool includes a tool body with a body wall extending around a central cavity. The central cavity extends along a longitudinal axis from a distal tool end to a proximal tool end. The central cavity includes a connector body sub-segment and a pin segment, the connector body sub-segment being dimensioned to accommodate a connector body for implantable leads, and the pin segment being dimensioned to accommodate a connector pin for implantable leads. A lateral space extends through the body wall from the central cavity to accommodate a protrusion for driving a probe.

[0008] A torque transmission tool is described. The torque transmission tool includes a drive probe and a wire-probe locking tool.

[0009] The above overview does not constitute an exhaustive list of all aspects of the invention. It is understood that the invention encompasses all systems and methods implemented from the various aspects outlined above and the detailed embodiments described below. These combinations offer specific advantages not specifically listed in the above overview. Attached Figure Description

[0010] A better understanding of the features and advantages of the invention will be obtained by referring to the following detailed description of illustrative embodiments utilizing the principles of the invention, along with the accompanying drawings.

[0011] Figure 1 An illustrated cross-sectional view of a patient's heart is shown according to one embodiment, illustrating an example of implantable lead placement within a target anatomical structure.

[0012] Figure 2 A perspective view of an implantable wire according to one embodiment is shown.

[0013] Figure 3 A perspective view of a drive probe inserted into an implantable wire, according to one embodiment, is shown.

[0014] Figure 4 A cross-sectional view of the drive mechanism of an implantable lead system according to one embodiment is shown.

[0015] Figure 5 A perspective view of a torque transmission tool mounted on an implantable lead wire, according to one embodiment, is shown.

[0016] Figure 6 A perspective view of a torque transmission tool for rotating implantable wires according to one embodiment is shown.

[0017] Figure 7 A perspective view of a driving probe according to one embodiment is shown.

[0018] Figure 8 A perspective view of a torque transmission tool according to one embodiment is shown.

[0019] Figure 9 A cross-sectional view of a torque transmission tool according to one embodiment is shown.

[0020] Figure 10 A cross-sectional view of a torque transmission tool mounted on an implantable wire, according to one embodiment, is shown.

[0021] Figure 11 A cross-sectional view of a wire-probe locking tool according to one embodiment is shown.

[0022] Figure 12 A cross-sectional view of a wire-probe locking tool according to one embodiment is shown.

[0023] Figure 13 A perspective view of a wire-probe locking tool according to one embodiment is shown.

[0024] Figure 14 A detailed view of the retaining groove of a wire-probe locking tool according to one embodiment is shown.

[0025] Figure 15 An illustrative view of a torque transmission tool mounted on an implantable lead wire, according to one embodiment, is shown.

[0026] Figure 16 A perspective view of a wire-probe locking tool according to one embodiment is shown.

[0027] Figure 17 An end view of a wire-probe locking tool according to one embodiment is shown.

[0028] Figure 18 An illustrative view of a torque transmission tool according to one embodiment is shown.

[0029] Figure 19 An illustrative view of a torque transmission tool according to one embodiment is shown.

[0030] Figure 20 A perspective view of a torque transmission tool according to one embodiment is shown.

[0031] Figure 21 A perspective view of a torque transmission tool according to one embodiment is shown.

[0032] Figure 22 A perspective view of a torque transmission tool according to one embodiment is shown.

[0033] Figure 23 A perspective view of a torque transmission tool mounted on an implantable lead wire, according to one embodiment, is shown.

[0034] Figure 24 A perspective cross-sectional view of a torque transmission tool mounted on an implantable wire, according to one embodiment, is shown. Detailed Implementation

[0035] The embodiments describe a driving probe, a lead-probe locking tool, and a torque delivery tool including the driving probe and the lead-probe locking tool. The torque delivery tool can be used during cardiac pacing lead implantation. For example, the torque delivery tool can assist in delivering a cardiac pacing lead to the left bundle branch. However, the torque delivery tool can be used during pacing lead implantation in other physiological sites, such as the brain or spine, to name just a few alternative applications.

[0036] In various embodiments, reference is made to the accompanying drawings. However, particular embodiments may be practiced without one or more of these specific details, or in combination with other known methods and configurations. Numerous specific details, such as specific configurations, dimensions, and processes, are set forth in the following description to provide a thorough understanding of the embodiments. In other instances, well-known processes and manufacturing techniques have not been described in particular detail to avoid unnecessarily obscuring the description. References to “one embodiment,” “an embodiment,” etc., in the specification mean that a particular feature, structure, configuration, or characteristic described is included in at least one embodiment. Therefore, the phrases “one embodiment,” “an embodiment,” etc., throughout the specification do not necessarily refer to the same embodiment. Furthermore, particular features, structures, configurations, or characteristics may be combined in any suitable manner in one or more embodiments.

[0037] The use of relative terms in this specification may indicate relative positions or directions. For example, "distal" may refer to a first direction along the longitudinal axis of the implantable lead, driving probe, or implantable lead system. Similarly, "proximal" may refer to a second direction opposite to the first direction. These terms are provided to establish relative reference frames, but are not intended to limit the use or orientation of the implantable lead, driving probe, or implantable lead system to the specific configurations described in the various embodiments below.

[0038] In one aspect, the torque transmission tool can lock a drive probe to an implantable lead and can optionally temporarily convert the implantable lead from an extendable cardiac pacing lead to a fixed cardiac pacing lead. Thus, the locked probe and lead system can function as a single unit, where the torque transmitted via the drive probe is also transmitted via the implantable lead. For example, the torque can be transmitted from the tip of the drive probe to the distal end of the implantable lead. The drive probe provides a rigidity, such as stainless steel, component at the center of torsion to improve torque transmission. More specifically, the torque transmission tool locks the drive probe to the lead body such that the components can rotate together as rigid members. Therefore, the torque transmission tool makes implantable lead placement easier and more reliable for physicians, for example, during conduction system pacing implantation in the left bundle branch region.

[0039] Several embodiments of torque delivery tools are described below. These embodiments can be broadly categorized into systems with different components. For example, some embodiments relate to a one-piece system with a drive probe having a persistently attached, for example, integrated, lead-probe locking tool. Some embodiments relate to a two-piece system with a drive probe having a detachable lead-probe locking tool. Other embodiments relate to a three-piece system with a drive probe having a multi-part, detachable lead-probe locking tool. Each system described herein offers similar advantages. For example, the torque delivery tool can enable easier deep implantation into the ventricular septum for conduction system pacing by providing improved torque delivery, which requires fewer lead body rotations to generate greater torque output. Improved torque delivery can reduce the risk of damaging the pacing lead. Additional advantages include adapting the electrical connection to the drive probe for unipolar pacing via the pacing system analyzer clip. Furthermore, the embodiments described below can be lightweight and have a minimal form factor to avoid placing excessive stress on the implantable lead during the implantation procedure.

[0040] refer to Figure 1 An illustrated cross-sectional view of a patient's heart is shown according to one embodiment, illustrating an exemplary implantable lead implantation in a target anatomical structure. The implantable lead 100, such as a pacing lead or an implantable cardioverter defibrillator lead, may be a transvenous lead capable of being delivered to the target anatomical structure to electrically pace it. The target anatomical structure may include the ventricular septum 106 of the heart and / or the left bundle branch 104 within the ventricular septum 106.

[0041] The implantable lead 100 can be any type of pacing lead. For example, the implantable lead 100 may include an extendable or retractable helix, or a fixed helix. Furthermore, the implantable lead 100 can be unipolar or bipolar. The implantable lead 100 can be a high-voltage or low-voltage lead type. Therefore, the description and illustration of the lead structure are provided herein by way of example and not limitation.

[0042] In one embodiment, the implantable lead 100 may include an active fixation element, such as a helical fixation element 108. The helical fixation element 108 may include an electrode that is fixed or extendable relative to the ring electrode 110. The implantable lead 100 may be driven into the interventricular septum to engage and anchor the implantable lead 100 to tissue. The helical fixation element 108 may be an active electrode, thus enabling tissue pacing. When the helical fixation element 108 is located at the left bundle branch 104, the ring electrode 110 may be located on or at the surface of the interventricular septum wall 106. The ring electrode 110 may be a passive or active electrode. Therefore, the electrodes can facilitate optimal placement of each electrode to provide a more robust or resilient multi-site pacing pattern.

[0043] refer to Figure 2 An implantable lead 100 is shown in a perspective view according to one embodiment. The implantable lead 100 may include a proximal lead segment along a central axis 204. Figure 3 The conductor body 202 extends to the distal conductor segment 206. The conductor body 202 may include a central cavity 208 within the distal conductor segment 206. The central cavity 208 may accommodate a portion of the helical retaining element 108. More specifically, the helical retaining element 108 may extend distally from the central cavity 208. In one embodiment, the helical retaining element 108 is fixed, with its distal tip permanently extending beyond the end of the conductor body 202. In one embodiment, the helical retaining element 108 is extendable, with its distal tip capable of extending or retracting from the central cavity 208, or relative to the distal end of the conductor body 202.

[0044] As described above, the implantable lead 100 may have one or more electrodes, such as a spiral fixation element 108 and / or a loop electrode 110. The electrodes may be driven into target tissue or used for pacing. For example, the distal tip of the spiral fixation element 108 may be screwed into the interventricular septum 106 to contact and pace the left bundle branch 104.

[0045] refer to Figure 3 A perspective view of a drive probe 310 inserted into an implantable lead 100 is shown according to one embodiment. The proximal lead segment 302 of the implantable lead 100 may include a seal 304 and a connector pin 306. The seal 304 is located proximal to the lead body 202 and forms a seal between the implantable lead 100 and the head of the biostimulator when the connector pin 306 is inserted into the electrical port of the biostimulator. The connector pin 306 is capable of conducting electrical signals between the electrical port and the electrodes of the implantable lead 100. For example, the connector pin 306 may be electrically connected to an inner coil (…). Figure 4This allows electrical signals to be transmitted to the helical retaining element 108. In one embodiment, the connector pin 306 is rotatably mounted in the conductor body 202 and is capable of transmitting torque to the inner coil to rotate the coupling element. Figure 4 Thus, the spiral fixing element 108 extends or retracts relative to the conductor 202.

[0046] In one embodiment, connector pin 306 may include a pin cavity 308 extending along central axis 204 into conductor body 202. More specifically, pin cavity 308 may extend through connector pin 306 into coil cavity of inner coil to provide access to drive coupling as described below. For example, in operation, drive probe 310 may be inserted into pin cavity 308 and advanced through implantable wire 100 to engage drive shaft of drive coupling.

[0047] As described above, the drive probe 310 can extend along the central axis 204 from the proximal shaft end (not shown) to the distal shaft end. The drive probe 310 can be an elongated member, such as a cylindrical wire, sized to slide freely within the pin cavity 308 and coil cavity of the implantable wire 100. The drive probe 310 can be made of metal or other materials with high torsional stiffness. Furthermore, the drive probe 310 can include a probe tip 312, which can be shaped to engage a drive coupling of the implantable wire 100. Therefore, an operator can twist the drive probe 310 to transmit torque through the drive probe 310 to the probe tip 312 and the implantable wire 100. Additionally, when the drive probe 310 is driven by a wire-probe locking tool as described below (… Figure 5 When locked to the implantable lead 100, the torque can be directly transmitted to the helical fixation element 108 through the implantable lead 100 and the drive probe 310 to drill into the target tissue.

[0048] refer to Figure 4 A cross-sectional view of the drive mechanism of an implantable lead system is shown according to one embodiment. The implantable lead system 400 includes an implantable lead 100 and a drive probe 310. The drive probe 310 can engage the implantable lead 100 to transmit torque and drive the implantable lead 100 into target tissue.

[0049] The conductor body 202 can be further divided into individual components. In one embodiment, the conductor body 202 includes an outer sheath 402 having a tubular, elongated structure. The outer sheath 402 may, for example, be an insulating sheath surrounding an outer coil (not shown). More specifically, the outer coil may include a coil extending from the proximal portion 302 of the implantable conductor 100 to the distal conductor segment 206 of the implantable conductor 100 (in... Figure 4(Seen in cross-section), and the outer sheath 402 may be a silicone sleeve or layer mounted on the outer coil. The outer coil may be formed of a conductive material to conduct sensing pulses or stimulation pulses, such as pacing pulses, from an external stimulation device, such as a pacing device, to the ring electrode 110. Thus, the outer sheath 402 may insulate the outer coil from the surrounding environment along the length of the outer sheath 402 covering the outer coil. Combined, the outer sheath 402 and the outer coil may form a conductor body 202 having a central cavity 208 through which an inner conductor subassembly extends.

[0050] The inner lead wire assembly may include a tubular, elongated structure. For example, the inner lead wire assembly may have an inner coil 412 that extends spirally around and longitudinally along a central axis 204. More specifically, the inner coil 412 may extend along the central axis 204, for example, within a central cavity 208, through the lead wire 202. The inner coil 412 may be formed of a conductive material, thus enabling the conduction of electrical stimulation pulses from an external stimulation device to a distal structure, such as the spiral fixation element 108, with the inner coil 412 electrically connected to said distal structure.

[0051] The implantable lead 100 may include a drive coupling 414. The drive coupling 414 may have an axial structure, such as a rotationally symmetric structure, including a length for engaging surrounding structures. For example, the drive coupling 414 may include a distal projection 415, such as a mounting post, to engage a helical retaining element 108. More specifically, the helical retaining element 108 may have a helical cavity extending through a helical coil (the helical coil may extend around the helical cavity), and the helical retaining element 108 may be mounted on the drive coupling 414 such that the distal projection 415 is disposed within the helical cavity.

[0052] The drive coupling 414 can also be coupled to the inner coil 412. For example, the inner coil 412 may have a coil cavity 416, and a proximal protrusion 417 of the drive coupling 414, such as a mounting section, may extend into the coil cavity 416. More specifically, the drive coupling 414 may be disposed in the coil cavity 416 and connected to the inner coil 412 to secure the inner coil 412 to the drive coupling 414.

[0053] Continue to refer to Figure 4 Through the aforementioned physical connections, the inner coil 412 can be electrically connected to the drive coupling 414, and the helical fixing element 108 can be electrically connected to the drive coupling 414. These structures can be conductive, so that pacing pulses and sensing pulses can be transmitted between the helical fixing element 108 and the inner coil 412 via the drive coupling 414.

[0054] The drive coupling 414 may be fixed relative to the lead body 202 or rotatable relative to the lead body. In one embodiment, the drive coupling 414 is fixed. For example, the drive coupling 414 may have an outer surface interconnected with the outer sheath 402 of the implantable lead 100. Thus, when torque is applied to the outer sheath 402 or the inner coil 412, this torque can be transmitted to the drive coupling 414. As described below, torque can also be delivered directly to the drive coupling 414, for example, through the engagement between the mating drive surfaces of the drive coupling 414 and the drive probe 310. The interconnection between the drive coupling 414 and the lead body 202 can be achieved by adhesive or thermal bonding. Alternatively, these components can be integrally formed, for example, the lead body 202 can be molded onto the drive coupling 414 or heat-shrink around the drive coupling 414.

[0055] In one embodiment, the drive coupling 414 is rotatable relative to the conductor 202. The drive coupling 414 may be rotatably mounted in the central cavity 208. For example, the drive coupling 414 may have an outer surface disposed within or abutting against a collar 419 of the conductor 202. When torque is applied to the drive coupling 414, the outer surface can rotatably slide about the central axis 204 within or abutting against the collar 419. This torque can be applied to the drive coupling 414 via the inner coil 412 or the drive probe 310. In one embodiment, the inner coil 412 is coupled to the drive coupling 414. For example, the drive coupling 414 may be disposed in the coil cavity 416 of the inner coil 412, and the inner coil 412 may be attached to the outer surface of the drive coupling 414. The attachment between the inner coil 412 and the drive coupling 414 allows torque to be transferred from the inner coil 412 to the drive coupling 414. When the inner coil 412 rotates within the central cavity 208 of the conductor 202, the rotation is transmitted to the drive coupling 414.

[0056] In one embodiment, torque can be transmitted from the proximal side of the implantable lead 100 to the drive coupling 414 via the drive probe 310. The drive coupling 414 may include a drive shaft 420 to receive torque input from the drive probe 310. More specifically, the probe tip 312 of the drive probe 310 may engage a surface of the drive shaft 420. The drive probe 310 can be rotated to twist the drive shaft 420 and rotate the drive coupling 414. Thus, the drive coupling 414 is capable of twisting the helical retaining element 108 and / or the lead body 202 to drill the implantable lead 100 into the target tissue.

[0057] refer to Figure 5A perspective view of a torque transmission tool mounted on an implantable lead 100 is shown according to one embodiment. A physician can attach a lead-probe locking tool 502 to a connector pin 306 proximally on the implantable lead 100. The lead-probe locking tool 502 (also referred to herein as a "locking tool") can be a component of the implantable lead system 400. More specifically, the lead-probe locking tool 502 can lock the implantable lead 100, such as the connector pin 306, to the drive probe 310. For example, the lead-probe locking tool 502 can be packaged or used together with the implantable lead 100 and the drive probe 310. The lead-probe locking tool 502 can be used to lock the implantable lead 100 to the drive probe 310. More specifically, as described below, the lead-probe locking tool 502 can accommodate the lead body 202 and the drive probe 310 to secure the lead body 202 relative to the drive probe 310. The lead-probe locking tool 502 can be integrated with or detached from the drive probe 310.

[0058] In one embodiment, the wire-probe locking tool 502 includes a tool body 504. The tool body 504 may have a distal portion configured to grip the implantable wire 100. For example, the distal portion may have an inner bore sized to press-fit onto a seal 304 or connector pin 306. More specifically, the tool body 504 may have a body wall 506 extending around a tool cavity 508. The distal portion may have a section of the tool cavity 508 sized to form a frictional fit with a section of the implantable wire 100. A proximal portion of the wire-probe locking tool 502 may be mounted on a drive probe 310. For example, the proximal portion may have a section of the tool cavity 508 sized to form a frictional fit with or adhere to the drive probe 310.

[0059] refer to Figure 6A perspective view of a torque-transmitting tool rotating an implantable lead 100 is shown according to one embodiment. Through engagement of the probe tip 312 with the drive coupling 414, the drive probe 310 can directly transmit torque to the drive shaft 420, and thus to the helical fixation element 108. It may also be advantageous to lock the drive probe 310 to the lead body 202 so that the implantable lead 100 and the drive probe 310 operate as a single entity. For example, when the helical fixation element 108 is not fixed to the lead body 202, such as when it is extendable, rotating the helical fixation element 108 by the drive probe 310 may not rotate the lead body 202 and could limit the deliverability of the device. Similarly, even when the helical fixation element 108 is fixed to the lead body 202, directly delivering torque to the drive shaft 420 without simultaneously rotating the proximal lead segment 302 may cause wrinkling or torque accumulation in the lead body 202, which could adversely affect deliverability. Therefore, the lead-probe locking tool 502 is capable of constraining or locking the drive probe 310 relative to the lead body 202. More specifically, when the lead-probe locking tool 502 is mounted on the implantable lead 100 and the drive probe 310, the lead-probe locking tool 502 receives the lead body 202 and the drive probe 310 to secure the lead body 202 relative to the drive probe 310 within the tool cavity 508. The lead-probe locking tool 502 can constrain the drive probe 310 relative to the lead body 202 both laterally and longitudinally relative to the central axis 204, and also about the central axis 204 in the rotational direction. In other words, the lead-probe locking tool 502 is capable of fixing the drive probe 310 relative to the lead body 202. Therefore, the embodiments described below lock the drive probe 310 to the implantable lead 100 so that torque can be applied directly through the center of the assembly during lead implantation.

[0060] refer to Figure 7 A perspective view of a drive probe 310 is shown according to one embodiment. The drive probe 310 may include an elongated body. More specifically, in one embodiment, the drive probe 310 includes a probe body 702 extending along a longitudinal axis 704 to a probe tip 312. When the drive probe 310 is inserted into a pin cavity 308, the longitudinal axis 704 may be aligned with the central axis 204 of the implantable lead 100.

[0061] The drive probe 310 may have a distal probe section and a proximal probe section. The distal probe section is designed for insertion of the implantable wire 100 and engagement with the drive coupling member 414, and the proximal probe section is designed for connection to the wire-probe locking tool 502. In one embodiment, the distal probe section has a probe tip 312. The probe tip 312 may include a drive head 706 for engagement with the drive coupling member 414. The drive head 706 may, for example, include a flat head, a cross-shaped head, or other symmetrical drive pattern. Alternatively, the drive head 706 may be asymmetrical, for example having a... Figure 7 The offset semi-circular pattern is shown. In any case, the drive head 706 can be matched with the corresponding support in the drive coupler 414 so that the drive head 706 can be firmly engaged with the drive coupler 414. Therefore, torque can be efficiently and directly transmitted through the probe body 702 to the drive head 706 and the drive coupler 414 to produce rotation of the helical fixing element 108.

[0062] The proximal probe section may include a section of the drive probe 310 that engages the wire-probe locking tool 502 to form a torque transmission tool as described below. Figure 8 The proximal probe section can be a section of the drive probe 310 that remains outside the lead body 202 when the probe tip 312 engages with the drive coupling member 414. Therefore, the proximal probe section can be substantially shorter than the distal probe section, which is located within the coil cavity 416 during this engagement. For example, the distal probe section can be at least ten times longer than the proximal probe section.

[0063] In one embodiment, the proximal probe section includes a protrusion 710 extending laterally outward from the probe body 702. The protrusion 710 may include a relief or recess in the probe body 702, a separate component such as a collar or weld point, or any other feature projecting radially outward from the longitudinal axis 704. Alternatively, instead of the protrusion 710, the proximal probe section may include a recess, such as a circumferential groove, extending radially inward toward the longitudinal axis 704 relative to the outer surface of the probe body 702. In any case, the protrusion 710 (or recess) provides a surface feature that increases the lateral dimension of the probe and engages the wire-probe locking tool 502 to restrict relative movement between the wire-probe locking tool 502 and the drive probe 310 in one or more directions, such as longitudinal, lateral, or rotational directions.

[0064] In one embodiment, the protrusion 710 includes a bend in the probe body 702. This bend can extend outward from the longitudinal axis 704 and return inward toward the longitudinal axis 704. For example, the protrusion 710 may include a distal protrusion segment 712 that connects radially outward from the longitudinal axis 704 to a proximal protrusion segment 714. The distal protrusion segment 712 may be a wire-shaped outwardly projecting segment, and the proximal protrusion segment 714 may be a wire-shaped inwardly projecting portion (or vice versa, depending on the viewing angle). The protrusion segments 712 and 714 may connect at a protrusion apex 716, which may be the radially outermost position of the protrusion 710 relative to the longitudinal axis 704.

[0065] The protrusion 710 can be longitudinally compressible, allowing the sections of the probe body 702 located on either side of the protrusion 710 to move relative to each other. For example, Figure 7 The protrusion 710 shown may have a V-shape formed by a distal protrusion segment 712 and a proximal protrusion segment 714 connected at the apex 716 of the protrusion. When tensile or compressive forces are applied to the protrusion 710, the V-shape may have an increasing or decreasing angle between the protrusion segments 712 and 714. Therefore, portions of the probe body 702 can move relative to each other, and the length of the protrusion 710 can be increased or decreased. As described below, decreasing the length of the protrusion 710 allows the protrusion 710 to slide into a groove within the wire-probe locking tool 502 to form a torque transmission tool. Such tools and other tools will now be described. In another embodiment, the protrusion 710 may have a U-shape formed by a distal protrusion segment 712, a proximal protrusion segment 714, and an intermediate bridging or interconnecting segment (not shown).

[0066] refer to Figure 8 A perspective view of a torque transmission tool 800 is shown according to one embodiment. The torque transmission tool 800 includes a drive probe 310 extending through a wire-probe locking tool 502. More specifically, the wire-probe locking tool 502 may be permanently or temporarily mounted on the drive probe 310. For example, the wire-probe locking tool 502 may be integrated with the drive probe 310 to form a one-piece system, or it may be detached from the drive probe 310 to form a two-piece system. Each embodiment is described below. In any case, when the torque transmission tool 800 is formed from these components, the protrusion 710 of the drive probe 310 may be at least partially contained within the body wall 506 of the wire-probe locking tool 502.

[0067] refer to Figure 9A cross-sectional view of a torque transmission tool 800 is shown according to one embodiment. The torque transmission tool 800 includes a wire-probe locking tool 502 comprising at least one segment of a drive probe 310. More specifically, in one embodiment, a body wall 506 extends around a tool cavity 508 of the wire-probe locking tool 502, and the drive probe 310 extends through the tool cavity 508. A protrusion 710 of the drive probe 310 may also be at least partially contained within the wire-probe locking tool 502. For example, the protrusion 710 may extend laterally outward from the probe body 702 toward the body wall 506.

[0068] The tool cavity 508 may extend along the longitudinal axis 704 from the distal tool end 902 to the proximal tool end 904. When the drive probe 310 engages with the wire-probe locking tool 502, the protrusion 710 of the drive probe 310 may be located longitudinally between the distal tool end 902 and the proximal tool end 904. For example, in one embodiment, the tool cavity 508 includes a plurality of sub-segments for receiving the implantable wire 100, and the protrusion 710 may be located proximal to these sub-segments, for example, longitudinally between these sub-segments and the proximal tool end 904.

[0069] In one embodiment, a sub-segment of the tool cavity 508 includes a connector body sub-segment 903 located distal to the pin segment 906. The connector body sub-segment 903 may be sized to accommodate the connector body of the implantable wire 100 (the proximal portion of the wire body 202). Similarly, the pin segment 906 may be sized to accommodate the connector pin 306 of the implantable wire 100. The sub-segments of the tool cavity 508 may be sized to accommodate wire components with varying degrees of frictional engagement. More specifically, the connector body sub-segment 903 may be sized to accommodate the connector body with a first frictional engagement, and the pin segment 906 may be sized to accommodate the connector pin 306 with a second frictional engagement, which may be the same as or different from the first frictional engagement. For example, the second frictional engagement may be tighter than the first frictional engagement. Therefore, when mounted on the implantable wire 100, the locking tool 502 may engage the wire components to provide a frictional engagement that locks the tool body 504 to the wire body 202 and / or the connector pin 306. This frictional bonding is described in U.S. Patent Application 18 / 100,532 (titled “Pacing LeadConversion Tool”, filed January 23, 2023, U.S. Patent Publication No. 2023 / 0347142), the contents of which are incorporated herein by reference.

[0070] In one embodiment, the wire-probe locking tool 502 includes a lateral space 910 extending from the tool cavity 508 through the body wall 506. The lateral space 910 is capable of accommodating a protrusion 710 of the drive probe 310. More specifically, the protrusion 710 extends radially outward from the tool cavity 508 into the lateral space 910. The lateral space 910 may comprise an open chamber or may be filled (by the same material as the body wall 506, or by additional material) as described in the various embodiments below. In any case, the extension of the protrusion 710 into the lateral space 910 can cause the drive probe 310 to interfere with one or more surfaces of the wire-probe locking tool 502, thereby limiting the movement of the drive probe 310 relative to the wire-probe locking tool 502 and enabling the wire-probe locking tool 502 to constrain the drive probe 310 relative to the wire body 202 or connector pin 306 when the wire component engages with the tool body 504.

[0071] refer to Figure 10 A cross-sectional view of a torque transmission tool 800 mounted on an implantable lead wire 100 is shown according to one embodiment. In one embodiment, the lateral space 910 of the lead wire-probe locking tool 502 includes a filler 1002. For example, the space may be completely filled, for example, with the same molding material used to form the remainder of the tool body 504. More specifically, the tool body 504 may be overmolded onto the drive probe 310. In this case, the filler 1002 (which may be part of the molding material of the tool body 504) may be in conformal contact with the protrusion 710. As used herein, "conformal contact" refers to a relationship in which a first element surrounds a second element such that the first element is in direct contact with the outer surface of the second element. For example, the filler 1002 may encapsulate and surround the protrusion 710, making direct contact with the outer surface of the protrusion 710, such that the tool body 504 and the protrusion 710 are completely locked together. Encapsulation of the protrusion 710 by the filler 1002 provides conformal contact between the components. Therefore, the wire shape can fit within the filled lateral space 910 and is immovable in any direction relative to the tool body 504.

[0072] In one embodiment, the wire form may be adapted within the lateral space 910 rather than overmolded onto the protrusion 710, and the encapsulation 1004 may surround the protrusion 710 within the tool body 504. As used herein, "encapsulation" refers to material that surrounds and encapsulates a component, thereby securing the component in place. The encapsulation 1004 may be an adhesive, epoxy resin, potting material, or other material that differs from the material of the tool body 504 and is filled into the lateral space 910 to surround and encapsulate the protrusion 710. As in the overmolded embodiment, the encapsulation 1004 may be in conformal contact with the protrusion 710 to secure the protrusion 710 within the lateral space 910, thereby resisting movement of the drive probe 310 relative to the tool body 504.

[0073] It should be understood that in both the overmolding and encapsulation variations of the torque transmission tool 800, the torque transmission tool 800 can be a one-piece system with a wire-probe locking tool 502 permanently fixed to the drive probe 310. More specifically, the drive probe 310 and the wire-probe locking tool 502 can be integrated into a single component. Therefore, the wire-probe locking tool 502 can be mounted on the implantable wire 100 to lock the drive probe 310 to the wire body 202. For example, sections of the implantable wire 100 held within the connector body sub-segment 903 and pin segment 906 of the tool cavity 508 can form a press fit with the inner surface of the tool body 504, and thus, the wire-probe locking tool 502 can resist relative movement between the implantable wire 100 and the drive probe 310.

[0074] refer to Figure 11 A cross-sectional view of a wire-probe locking tool 502 is shown according to one embodiment. The torque transmission tool 800 may have a two-piece system. More specifically, the wire-probe locking tool 502 is detachable from the drive probe 310. In one embodiment, the locking tool 502 may include a section capable of being assembled onto the drive probe 310. The drive probe 310 is not... Figure 11 It is indicated, but it should be understood, that the drive probe 310 can be placed through the tool cavity 508 of the wire-probe locking tool 502 to be loaded through the lateral space 910. The lateral space 910 can have a wavy or curved shape, including a width greater than the tool cavity 508. Therefore, the drive probe 310 can pass through the tool cavity 508 until the protrusion 710 is aligned with the lateral space 910 and extends radially outward into the lateral space 910. The lateral space 910 can optionally be filled by the encapsulation 1004 to secure the protrusion 710. Alternatively, the resistance between the protrusion 710 and the wall of the lateral space 910 can be sufficient to hold the protrusion 710 in place within the lateral space 910. In any case, a cap (not shown) can be placed... Figure 11The tool body 504 shown is enclosed by a tool cavity 508 and a lateral space 910, and the drive probe 310 is fixed relative to the tool body 504. Therefore, the wire-probe locking tool 502 may include a first tool section having a first chamber (lateral space 910). Figure 11 (as shown) and optionally include a second tool section, such as a cap (not shown), having a second chamber (a space mirroring the transverse space 910). The tool sections can be combined to form the transverse space 910 that holds the protrusion 710.

[0075] refer to Figure 12 A cross-sectional view of a wire-probe locking tool 502 is shown according to one embodiment. An alternative lateral space 910 is shown, which may have a rectangular shape. Figure 11 As shown in the wavy shape, the rectangular shape can have a width exceeding the diameter of the tool cavity 508. Therefore, the drive probe 310 can be loaded into the tool cavity 508 to position the protrusion 710 within the lateral space 910. Movement of the drive probe 310 relative to the tool body 504 can be resisted by the cavity surface (and optionally, by the encapsulation 1004 inserted into the lateral space 910). A second tool section (not shown) can then be loaded onto the first tool section to complete the lead-probe locking tool 502 that holds the drive probe 310. The two-piece locking tool 502 allows the physician to use the lead-probe locking tool 502 with minimal setup. The physician can simply slide the drive probe 310 into the connector pin 306 and apply the lead-probe locking tool 502 to the connector pin 306 to secure the drive probe 310 proximally to the lead 100.

[0076] refer to Figure 13 A perspective view of a lead-probe locking tool 502 is shown according to one embodiment. Another two-piece system includes a lead-probe locking tool 502 capable of being temporarily coupled to a drive probe 310. More specifically, the drive probe 310 can be loaded into the lead-probe locking tool 502 and then removed from it at the physician's convenience.

[0077] Drive probe 310, for example Figure 7 The drive probe 310 shown can be loaded into the wire-probe locking tool 502 via a side groove 1302. The side groove 1302 can extend through the body wall 506 of the wire-probe locking tool 502. More specifically, the side groove 1302 can extend radially outward from the tool cavity 508 through the body wall 506 to reach the surrounding environment. The side groove 1302 provides a lateral space 910 into which the protrusion 710 can extend when the wire-probe locking tool 502 is loaded onto the drive probe 310.

[0078] In one embodiment, the lateral space 910 accommodating the protrusion 710 of the drive probe 310 may include a retaining groove 1304 for accommodating the protrusion 710. The retaining groove 1304 may be characterized as an L-shaped groove or a T-shaped groove into which the protrusion 710 can be inserted to lock the drive probe 310 to the tool body 504. More specifically, the retaining groove 1304 may accommodate the protrusion 710 in the lateral direction and then hold the protrusion 710 in place to restrict movement of the drive probe 310 relative to the tool body 504.

[0079] The retaining groove 1304 may have a first section through which the protrusion 710 passes from the side groove 1302 to engage a second section of the retaining protrusion 710. The first section may include a circumferential groove section ( Figure 14 The circumferential groove section can extend laterally into the tool body 504 in the circumferential direction (relative to the longitudinal axis). In contrast, the second section may include a longitudinal groove section ( Figure 14 The longitudinal groove segment can extend longitudinally from the end of the circumferential groove segment, for example, extending distally or proximally.

[0080] In one embodiment, the relative dimensions of the retaining groove 1304 segments can facilitate the passage and / or capture of the protrusion 710 of the drive probe 310. For example, the circumferential groove segment may be narrower than the longitudinal groove segment. More specifically, the width of the circumferential groove segment in the longitudinal direction may be smaller than the width of the longitudinal groove segment in the longitudinal direction. The narrower circumferential groove segment can accommodate the protrusion 710 in a compressed state as described below, while the wider longitudinal groove segment can accommodate and retain the protrusion 710 in an expanded state.

[0081] refer to Figure 14 A detailed view of the retaining groove of the wire-probe locking tool 502 is shown according to one embodiment. (See below) Figure 15 In the diagram, the wire shape is shown in an unfolded state, remaining within the longitudinal groove section 1404 after passing laterally through the circumferential groove section 1402. (See again) Figure 14To facilitate this insertion, the spring wire shape can be compressed to slide into the retaining groove 1304. The compressive force applied to the spring wire can reduce the length of the protrusion 710, for example, to less than the width of the circumferential groove segment 1402, to allow the protrusion 710 to slide through that segment. The V-shaped portion of the protrusion 710 can then be rotated through the circumferential groove segment 1402 into the longitudinal groove segment 1404. When the protrusion 710 is aligned with the longitudinal groove segment 1404, the compressive force can be removed, allowing the spring wire shape to unfold. More specifically, the length of the protrusion 710 can be increased, allowing the V-shaped portion of the protrusion 710 to widen and allowing the distal protrusion segment 712 to slide forward into the longitudinal groove segment 1404. Thus, the protrusion 710 is secured in place, preventing the drive probe 310 from translating relative to the lead wire 202. More specifically, the retaining groove 1304 can lock the drive probe 310 relative to the tool body 504 in both the longitudinal and rotational directions. The locked body, namely the drive probe 310 and the wire-probe locking tool 502, can form a torque transmission tool 800.

[0082] The V-shaped protrusion 710 allows for various tolerant interactions between the implantable lead 100 and the locking tool 502. For example, depending on the implantable lead 100 used, a separate drive probe 310 and / or the lead-probe locking tool 502 can be selected to provide a system suitable for a variety of procedures. Therefore, the overall system cost can be reduced by ensuring functionality without requiring additional assembly tolerances to the implantable lead 100.

[0083] refer to Figure 15 A schematic view of a torque transmission tool 800 mounted on an implantable lead 100 is shown according to one embodiment. The probe for lead implantation typically has a knob proximally on the drive probe 310 to allow a physician to manipulate (e.g., rotate) the drive probe 310. The lead-probe locking tool 502 may have a proximal tool section that engages with such a knob. In one embodiment, the lead-probe locking tool 502 includes, for example, a knob support in the tool body 504 within the proximal tool section at the proximal tool end 904. Figure 17 ).

[0084] refer to Figure 16 A perspective view of a wire-probe locking tool 502 is shown according to one embodiment. A knob support at the proximal tool end 904 can extend longitudinally into the proximal tool section 1602 to form a chamber capable of receiving a knob on the drive probe 310. This chamber can have a profile that matches the outer surface profile of the knob. For example, the knob and knob support can have a hexagonal shape, as shown. In any case, the knob support can have a non-circular shape.

[0085] refer to Figure 17 An end view of a wire-probe locking tool 502 is shown according to one embodiment. The drive probe 310 may include a locking knob ( Figure 18 The locking knob may include an outer surface profile shaped for insertion into a knob support 1702 within the tool body 504. More specifically, the locking knob is shaped to fit within the knob support 1702 such that the outer profile of the proximal tool section 1602 and the outer profile of the locking knob are adapted to each other. Such outer profiles may be non-circular, for example, hexagonal, to allow interference between the surfaces of the locking knob and the proximal tool section 1602 when attempting to rotate the locking knob. More specifically, the knob support 1702 may accommodate the locking knob such that the proximal tool section 1602 resists rotation of the locking knob.

[0086] refer to Figure 18 A schematic view of a torque transmission tool 800 is shown according to one embodiment. The proximal tool section 1602 also resists longitudinal movement of the locking knob 1802. In one embodiment, the knob support 1702 is defined by inner wall surfaces of the proximal tool section 1602, which gradually taper radially inward in the longitudinal direction. When the locking knob 1802 is inserted into the knob support 1702, the outer surface of the locking knob 1802 can form a press fit with the inner wall surfaces, and the resulting frictional fit can resist longitudinal movement, such as retraction of the knob. Therefore, the locking knob 1802 can be inserted into the knob support 1702 to achieve one or more of rotational and longitudinal fixation of the drive probe 310 relative to the locking tool 502. The fixed bodies, namely the drive probe 310, the wire-probe locking tool 502, and the locking knob 1802, can form the torque transmission tool 800.

[0087] Using the locking knob 1802 design reduces the additional manufacturing requirements needed to realize the torque transmission tool 800. More specifically, the locking knob 1802 can be formed in a manner similar to previously used manufacturing processes, including a non-circular outer contour, so that the system can use readily available drive probes 310. The shape of the locking tool 502 can be designed to accommodate such drive probes 310 and achieve fixation between components.

[0088] refer to Figure 19A schematic view of a torque transmission tool is shown according to one embodiment. When the locking knob 1802 is engaged with the wire-probe locking tool 502, it may still be necessary or preferably necessary to deliver an electrical signal through the probe body 702 for unipolar pacing. Therefore, an accessible probe area can be provided proximally to the locking knob 1802. More specifically, the drive probe 310 may include a probe extension 1902 located proximally to the locking knob 1802. The probe extension 1902 can extend proximally from the locking knob 1802 (also referred to herein as the first knob) to a second knob 1904 driving the probe 310. The locking knob 1802 and the second knob 1904 may be longitudinally separated. In one embodiment, the locking knob 1802 and the second knob 1904 are mounted along the probe body 702. That is, the probe extension 1902 may be a proximal segment of the probe body 702. Therefore, the probe body 702 can extend continuously from the second knob 1904, through the locking knob 1802, and distally to the probe tip 312. Thus, the physician can use the second knob 1904 to manipulate the drive probe 310, for example by inserting the locking knob 1802 into the locking support 1702, and can attach an electrical connector, such as a PSA clip, to the probe extension 1902 during pacing.

[0089] refer to Figure 20 A perspective view of a torque transmission tool 800 is shown according to one embodiment. The torque transmission tool 800 may include a lateral space 910 to receive and retain a protrusion 710 of a drive probe 310. In one embodiment, the lateral space 910 may be part of a side groove 1302 that extends laterally along its entire length between a proximal tool end 904 and a distal tool end 902 through the tool body 504 to the surrounding environment. For example, the lateral space 910 may include a segment of the side groove 1302 extending through a proximal tool section 1602. In one embodiment, the lateral space 910 has a circumferential width, for example, between opposite sides of the proximal tool section 1602 across the lateral space 910, which is the same as or slightly larger than the diameter of the drive probe 310. Thus, when the drive probe 310 is inserted into the wire-probe locking tool 502 to form the torque transmission tool 800, the protrusion can slide into the lateral space 910. The tight fit of the protrusion within the transverse space 910 allows the opposite sides to resist rotation of the protrusion and the drive probe 310 in the engaged state.

[0090] Optionally, the width of the lateral space 910 is slightly smaller than the probe diameter to create a frictional fit between the proximal tool section 1602 and the protrusion in the engaged state. Therefore, the wire-probe locking tool 502 can resist both rotation and longitudinal movement of the driving probe 310, thereby securing the components in a two-piece system to form the torque transmission tool 800.

[0091] refer to Figure 21 A perspective view of a torque transmission tool 800 is shown according to one embodiment. An alternative for forming a frictional fit between the wire-probe locking tool 502 and the drive probe 310 is to use an end cap 2102 to resist longitudinal movement of the protrusion 710. More specifically, the wire-probe locking tool 502 may include an end cap 2102 mounted on the proximal tool end 904 of the proximal tool section 1602, and the end cap 2102 may retain the protrusion 710 in position within the lateral space 910. The end cap 2102 may include a central hole 2104 aligned with the tool cavity 508 of the locking tool 502. The end cap 2102 resists retraction of the drive probe 310 because the protrusion 710 will contact and be blocked by the distal end of the end cap 2102 fixed to the proximal tool end 904. Therefore, the end cap 2102 provides an anti-translational feature to keep the drive probe 310 fixed in position.

[0092] refer to Figure 22 A perspective view of a torque transmission tool 800 is shown according to one embodiment. The lateral space 910 may include intermittent slots 2202 having a plurality of slotted segments 2204. Such intermittent slots 2202 may be longitudinally separated from each other via connector openings 2206. Intermittent slots 2202 and connector openings 2206 are described in U.S. Patent Publication 2023 / 0347142, which is cited above and the contents thereof are incorporated herein by reference. During a pacing procedure, connector openings 2206 may receive electrical clips, such as PSA clips, for pacing or sensing via pin connectors exposed through connector openings 2206.

[0093] During wire delivery, connector opening 2206 can secure the wire-probe locking tool 502 relative to drive probe 310. For example, drive probe 310 may include a locking knob 1802 mounted on probe body 702, and locking knob 1802 may engage a surface of tool body 504 defining connector opening 2206. In one embodiment, locking knob 1802 of drive probe 310 includes deployable flaps 2208. Deployable flaps 2208 can be actuated, for example, bent up and down, to reduce the overall width of locking knob 1802. More specifically, when deployable flaps 2208 are in a first state, they bend upwards and are capable of sliding through a narrow channel in the proximal tool section 1602 of lateral space 910. When deployable flaps 2208 are located within connector opening 2206, they can bend downwards to a second state to fill a portion of connector opening 2206, such as... Figure 22As shown. In the downward position, the deployable flap 2208 can also interfere with the proximal tool section 1602. The extended deployable flap 2208 can prevent the drive probe 310 from translating relative to the wire-probe locking tool 502. The proximal tool section 1602 can resist the retraction of the deployable flap 2208, thus the deployable flap 2208 can fix the locking knob 1802 in position. Furthermore, for example, by overmolding the locking knob 1802 onto the probe body 702, the locking knob 1802 can be fixed to the probe body 702. Therefore, when the deployable flap 2208 is positioned within the connector opening 2206, the locking knob 1802 can fix the drive probe 310 within the wire-probe locking tool 502 to form a torque transmission tool 800.

[0094] refer to Figure 23 A perspective view of a torque transmission tool 800 mounted on an implantable wire 100 is shown according to one embodiment. The two-piece torque transmission tool 800 may include a clamshell locking tool 502 mounted on a drive probe 310 to hold the drive probe 310 in place. The clamshell locking tool 502 may have two sections that come together to compress the connector pin 306 and the drive probe 310.

[0095] In one embodiment, the clamshell locking tool 502 includes a first tool section 2302 and a second tool section 2304. Similar to... Figure 11-12 The split-type cover design allows each section to have a chamber, which combine to form a lateral space 910. The first tool section 2302 can be hinged to the second tool section 2304 so that the clamshell locking tool 502 can be in an open (not shown) and closed (…) position. Figure 23 The clamshell locking tool 502 can be loaded onto the drive probe 310 in the open state and then actuated to the closed state to grip the drive probe 310.

[0096] refer to Figure 24 A cross-sectional view of a torque transmission tool 800 mounted on an implantable wire 100 is shown according to one embodiment. When the clamshell locking tool 502 is actuated to the closed state, a snap-fit ​​engagement is formed between the first and second sections. The snap-fit ​​engagement allows the user to tactilely feel the accessory engaging properly on the drive probe 310.

[0097] In one embodiment, the first tool section 2302 has a first chamber 2402, and the second tool section 2304 has a second chamber 2404. In a closed configuration, the first tool section 2302 and the second tool section 2304 combine such that the first chamber 2402 and the second chamber 2404 form a lateral space 910. The lateral space 910 can hold the drive probe 310 in place. Simultaneously, the combined volume of the chambers 2402 and 2404 provides a channel segment for accommodating the implantable lead 100, including a pin connector and a lead body 202. Therefore, the clamshell locking tool 502 can compress the implantable lead 100 and the drive probe 310 to lock the entire system relative to each other, allowing the physician to directly transmit torque to the helical fixation element 108 to drill the lead into the target tissue.

[0098] Optionally, the clamshell locking tool 502 may include a locking portion to lock the first tool section 2302 to the second tool section 2304 in the closed state. Therefore, the clamshell locking tool 502 can grip and hold the drive probe 310 to form a torque transmission tool 800, and advantageously, this can be achieved without a specialized wire shape. More specifically, the clamshell locking tool 502 can grip the drive probe 310, with or without the protrusion 710.

[0099] One aspect of the embodiment relates to a drive probe 310, which includes a probe body 702 extending along a longitudinal axis 704 to a probe tip 312, and a protrusion 710 extending laterally outward from the probe body 702.

[0100] In one embodiment, the protrusion 710 can be compressed longitudinally.

[0101] In one embodiment, the protrusion 710 includes a distal protrusion section 712 that is radially outwardly connected to the proximal protrusion section 714 from the longitudinal axis 704.

[0102] In one embodiment, the distal protrusion segment 702 and the proximal protrusion segment 704 are connected at the protrusion apex 716 to form a V-shape.

[0103] In one embodiment, the probe tip 312 includes a drive head 706.

[0104] Another aspect of the embodiment relates to a wire-probe locking tool 502. The wire-probe locking tool 502 includes a tool body 504, which includes a body wall 506 extending around a central cavity 508. The central cavity 508 extends along a longitudinal axis 704 from a distal tool end 902 to a proximal tool end 904. The central cavity 508 includes a connector body sub-segment 903 and a pin segment 906, the connector body sub-segment 903 being sized to accommodate a connector body for implantable wire 100, and the pin segment 906 being sized to accommodate a connector pin 306 for implantable wire 100. A lateral space 910 extends from the central cavity 508 through the body wall 506 to accommodate a protrusion 710 for driving a probe 310.

[0105] In one embodiment, the lateral space 910 extends from the central cavity 508 through the body wall 506 to accommodate the protrusion 710 of the drive probe 310 as defined above.

[0106] In one embodiment, the lateral space 910 includes a side groove 1302 that extends from the central cavity 506 through the body wall 506 to the surrounding environment.

[0107] In one embodiment, the lateral space 910 includes a retaining groove 1304 for receiving the protrusion 710. The retaining groove 1304 has a circumferential groove section and a longitudinal groove section.

[0108] In one embodiment, the wire-probe locking tool 502 further includes an end cap 2102 mounted on the proximal tool end 904. The end cap 2102 includes a central hole 2104 aligned with the central cavity 508.

[0109] In one embodiment, the connector body sub-section 903 is sized to accommodate the connector body 202 in a first frictional fit, and the pin section 906 is sized to accommodate the connector pin 306 in a second frictional fit, the second frictional fit being tighter than the first frictional fit.

[0110] Another aspect of the embodiment relates to a torque transmission tool 800. The torque transmission tool 800 includes a drive probe 310, which includes a probe body 702 extending along a longitudinal axis 704 to a probe tip 312 and a protrusion 710 extending laterally outward from the probe body 702. The torque transmission tool 800 also includes a wire-probe locking tool 502, which includes a tool body 504 having a body wall 506 extending around a central cavity 508. The central cavity 508 extends along the longitudinal axis 704 from a distal tool end 902 to a proximal tool end 904. The central cavity 508 includes a connector body sub-segment 903 and a pin segment 906, the connector body sub-segment 903 being sized to accommodate a connector body for implantable wire 100, and the pin segment 906 being sized to accommodate a connector pin 306 for implantable wire 100. The transverse space 910 extends from the central cavity 508 through the body wall 506 to accommodate the protrusion 710 of the driving probe 310.

[0111] In one embodiment, the torque transmission tool 800 includes a drive probe 310 as defined above and a wire-probe locking tool 502 as defined above.

[0112] In one embodiment, the protrusion 710 includes a distal protrusion section 712 that is radially outwardly connected to the proximal protrusion section 714 from the longitudinal axis 704.

[0113] In one embodiment, the tool body 504 is in conformal contact with the protrusion 710.

[0114] In one embodiment, the torque transmission tool 800 further includes an encapsulation 1004 that surrounds the protrusion 710 within the tool body 504.

[0115] In one embodiment, the connector body sub-section 903 is sized to accommodate the connector body in a first frictional fit, and the pin section 906 is sized to accommodate the connector pin 306 in a second frictional fit, the second frictional fit being tighter than the first frictional fit.

[0116] In one embodiment, the lateral space 910 includes an intermittent slot 2202 having a plurality of slot segments 2204 longitudinally separated by a connector opening 2206. The drive probe 310 includes a deployable flap 2208 disposed within the connector opening 2206.

[0117] In one embodiment, the wire-probe locking tool 502 includes a knob support 1702 located in the tool body 504 at the proximal tool end 904. The drive probe 310 includes a first knob 1802 shaped to fit within the knob support 1702.

[0118] In one embodiment, the drive probe 310 includes a second knob 1904. The first knob 1702 and the second knob 1904 are longitudinally separated along the probe body 702.

[0119] In one embodiment, the wire-probe locking tool 502 includes a first tool section having a first chamber and a second tool section having a second chamber. The first tool section and the second tool section are combined such that the first chamber and the second chamber form a lateral space 910.

[0120] In one embodiment, the first tool section is hinged to the second tool section.

[0121] The invention has been described in the foregoing specification with reference to specific exemplary embodiments. It will be apparent that various modifications can be made thereto without departing from the broader spirit and scope of the invention as set forth in the appended claims. Therefore, the specification and drawings should be considered illustrative rather than restrictive.

Claims

1. A driving probe, comprising: The probe body extends along the longitudinal axis to the probe tip; as well as Protrusions extending laterally outward from the probe body.

2. The driving probe according to claim 1, wherein, The protrusion can be compressed longitudinally.

3. The driving probe according to claim 2, wherein, The protrusion includes a distal protrusion section that connects radially outward from the longitudinal axis to the proximal protrusion section.

4. The driving probe according to claim 3, wherein, The distal protruding section and the proximal protruding section connect at the apex of the protrusion to form a V-shape.

5. The driving probe according to claim 1, wherein, The probe tip includes a drive head.

6. A wire-probe locking tool, comprising: The tool body includes a body wall extending around a central cavity, wherein the central cavity extends along a longitudinal axis from a distal tool end to a proximal tool end, wherein the central cavity includes a connector body sub-segment and a pin segment, the connector body sub-segment being sized to accommodate a connector body for implantable wires, the pin segment being sized to accommodate a connector pin for implantable wires, and wherein a lateral space extends from the central cavity through the body wall to accommodate a protrusion for driving a probe.

7. The wire-probe locking tool according to claim 6, wherein, The lateral space includes side channels that extend from the central cavity through the body wall and into the surrounding environment.

8. The wire-probe locking tool according to claim 6, wherein, The lateral space includes a retaining groove for accommodating the protrusion, wherein the retaining groove has a circumferential groove section and a longitudinal groove section.

9. The wire-probe locking tool according to claim 6, further comprising an end cap mounted on the proximal end of the tool, wherein, The end cap includes a central hole aligned with the central cavity.

10. The wire-probe locking tool according to claim 6, wherein, The connector body sub-section is sized to accommodate the connector body with a first friction fit, and the pin section is sized to accommodate the connector pin with a second friction fit, the second friction fit being tighter than the first friction fit.

11. A torque transmission tool, comprising: A driving probe includes a probe body extending along a longitudinal axis to a probe tip, and a protrusion extending laterally outward from the probe body. as well as A lead-probe locking tool includes a tool body having a body wall extending around a central cavity, wherein the central cavity extends along a longitudinal axis from a distal tool end to a proximal tool end, wherein the central cavity includes a connector body sub-segment and a pin segment, the connector body sub-segment being sized to accommodate a connector body for implantable lead wires, the pin segment being sized to accommodate a connector pin for implantable lead wires, and wherein a lateral space extends from the central cavity through the body wall to accommodate a protrusion for driving a probe.

12. The driving probe according to claim 11, wherein, The protrusion includes a distal protrusion section that connects radially outward from the longitudinal axis to the proximal protrusion section.

13. The torque transmission tool according to claim 11, wherein, The tool body and the protrusion are in conformal contact.

14. The torque transmission tool of claim 11, further comprising an encapsulation surrounding the protrusion within the tool body.

15. The torque transmission tool according to claim 11, wherein, The connector body sub-section is sized to accommodate the connector body with a first friction fit, and the pin section is sized to accommodate the connector pin with a second friction fit, the second friction fit being tighter than the first friction fit.

16. The torque transmission tool according to claim 11, wherein, The lateral space includes an intermittent slot having a plurality of slot segments longitudinally separated by a connector opening, wherein the drive probe includes deployable fins disposed within the connector opening.

17. The torque transmission tool according to claim 11, wherein, The wire-probe locking tool includes a knob support located in the tool body at the proximal end of the tool, and wherein the drive probe includes a knob shaped to fit within the knob support.

18. The torque transmission tool according to claim 17, wherein, The drive probe includes a second knob, wherein the first knob and the second knob are longitudinally separated along the probe body.

19. The torque transmission tool according to claim 11, wherein, The wire-probe locking tool includes a first tool section having a first chamber and a second tool section having a second chamber, wherein the first tool section and the second tool section are combined such that the first chamber and the second chamber form a lateral space.

20. The torque transmission tool according to claim 19, wherein, The first tool section and the second tool section are hinged together.

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