Wrench for adjusting an external fixation post, an adjustable external fixation post, and a kit including the fixation post and wrench

Abstract

The present disclosure relates to a programmable wrench (100) for automatically adjusting the length of an external fixator post (200), the programmable wrench (100) comprising a mechanical connector that releasably engages with the external fixator post (200) and enables at least the transmission of an adjustment torque from the programmable wrench (100) to the external fixator post (200), and an electrical connector that releasably connects with the external fixator post (200) and enables at least the transmission of data from the external fixator post (200) to the programmable wrench (100), the mechanical connector and the electrical connector being integrated at a common port for joint engagement and disengagement with the external fixator post (200).

Description

[Technical Field]

[0001] The present disclosure relates to the general field of external fixation, and more particularly to external fixator post adjustment wrenches, adjustable external fixator posts, and kits including such fixation posts and wrenches. [Background technology]

[0002] Without limiting the scope of this disclosure, this specification provides background on external fixation devices and associated tools for adjusting the struts or other connecting rods of the devices.

[0003] External fixation devices are commonly used in various surgical procedures, such as limb fracture fixation, bone lengthening, and deformity correction. This process involves the application of a rigid framework. This framework can be a circular system, such as a hexapod system, and / or a circular system with multiple struts. Such systems typically include multiple rings or arches attached to each segment of the bone, positioned externally around the limb, using wires and half pins inserted into each segment and connected to the associated segment of the external rigid framework. Monolateral systems, such as a monolateral rail or a monolateral unibody, can also be used.

[0004] The opposing rings of the rigid framework are interconnected by threaded and / or telescoping posts either directly or in combination with single- or multi-planar hinges, allowing the relative positions of the rings to be adjusted longitudinally, rotationally, horizontally, or angularly over a period of time.

[0005] For example, in limb lengthening surgery, a bone is surgically divided into two compartments, and wires and half pins are inserted into each compartment above and below the surgical osteotomy and attached to rings of a rigid framework interconnected by struts or telescoping connecting struts.

[0006] For limb lengthening, the opposing rings are preferably directly interconnected by at least three or four threaded or telescoping struts whose length can be periodically adjusted to gradually separate the bone segments longitudinally.

[0007] The rigid framework is used to gradually separate the two bone compartments longitudinally over a period of time (e.g., 1 mm per day), allowing new bone to gradually form in the gap between the bone compartments created by this distraction technique. Once the desired bone distraction is achieved (e.g., 5-6 cm), the external device is secured in a fixed position and left on the bone compartments until the newly formed bone is fully mineralized (e.g., 3-6 months, depending on the nature of the condition and / or the amount of bone distraction).

[0008] Similarly, in deformity correction, the bone is surgically divided into two compartments (usually at the apex of the deformity), and wires and half pins are inserted into the bone compartments above and below the osteotomy and attached to rings of a rigid framework. Again, the rings on opposite sides of the rigid framework are interconnected by hinges and threaded posts with attached angular distractors that are used to gradually angularly separate the two bone compartments over a period of time.

[0009] One common fixation device is a circular metal structure called an Ilizarov appliance. Used for limb lengthening and deformity correction, the Ilizarov appliance consists of multiple rings or arches attached to the outside of the limb and secured to surgically separated bone segments using wires and half pins. For angular deformity correction, the opposing rings of the Ilizarov appliance are connected by a pair of hinges that act as the axis of rotation for the bone segments and an angular distractor that gradually spreads the two rings and their associated bone segments apart.

[0010] Another common external fixator device is known as the Taylor Spatial Frame, a hexapod external fixator based on the so-called Stewart platform, but which shares many components and features with the Ilizarov device.

[0011] The Taylor Spatial Frame consists of two external fixation rings attached to each bone segment with wires and half pins, connected by five or six telescoping struts. The struts have multi-plane hinges at both ends. Each strut can be extended or retracted as needed to move the two interconnected ring segments toward or away from each other.

[0012] Other examples of this type of fixation device are commercially known as TrueLok and Sheffield.

[0013] By adjusting the length of the struts, it is possible to rapidly or gradually manipulate each segment of the bone in multiple axes to simultaneously lengthen the limb and correct angular, translational, and rotational deformities.

[0014] Routine strut length adjustments are typically calculated by dedicated software. Once the device is attached to each bone segment, numerous parameters, including deformation parameters, frame parameters, and attachment parameters, are entered into the software to characterize the relative position of one ring relative to another and the relative positions of the bone segments relative to each other and to the rings. After calculating the total amount of each strut length adjustment, the software provides tabular instructions ("prescriptions") for the strut length adjustment to be achieved for each increment, including the identification number of the single strut, the amount of adjustment required, and the time over which these and other adjustments are scheduled. In most cases of deformity correction, the struts are adjusted by different amounts in different directions (shortening / lengthening).

[0015] Because this prescription requires multiple adjustments over time, typically up to four times a day, these adjustments often cannot be performed by a surgeon or specialist, so the task of following the prescription by turning an adjustment knob on a post or a nut on a threaded rod with a wrench falls to the patient or their relatives.

[0016] Such strut length adjustments are time consuming (e.g., by loosening and retightening threaded rod nuts before and after adjustment), do not allow precise length adjustments (e.g., minute adjustments are difficult to monitor), and contribute to overall frame instability during adjustments (e.g., due to dimensional clearances between connecting elements).

[0017] Furthermore, length adjustment prescriptions can be complex, and the process is prone to human error. Patients are expected to check the length of the braces to ensure that the prescription matches the frame condition, but neglecting to do so or not checking at all can allow errors to go unnoticed.

[0018] Additionally, it must be considered that feedback to the surgeon is dependent on the patient, who is required to communicate strut adjustments, usually by uploading information to a dedicated portal. Again, the patient may inadvertently provide the surgeon with inaccurate or incomplete information.

[0019] It is easy to understand that errors in implementing the prescription, especially if not immediately identified by the surgeon, can have a negative impact on the final outcome of the correction process.

[0020] To alleviate the above drawbacks, programmable tools for incrementally adjusting the length of external fixator struts have been proposed in recent years. For example, prior art document WO 2009 / 105479, filed in the name of Texas Scottish Rite Hospital for Children, describes a tool designed as a powered wrench that engages the adjustment mechanism of the external fixator strut. The tool has an internal memory that stores prescription adjustment parameters and is configured to automatically adjust each strut according to these parameters.

[0021] Although programmable tools offer many advantages over the prior art techniques mentioned above, drawbacks remain, particularly with regard to ease of use of the device.

[0022] Indeed, to correctly adjust the strut length parameters according to the stored prescription, it is recommended that real-time measurements of the strut length be input into the tool. If the tool were to perform length increases or decreases according to the prescription without feedback, the adjustment process would easily be flawed by incremental errors, and incorrect manipulation by the patient (e.g., coupling the tool to the wrong strut when applying the prescription) could prevent the correct application of the adjustment plan over time.

[0023] Therefore, it is preferable that the programmable tool be equipped with a means for measuring the length of the strut, such as a digital ruler coupled to each end of the strut. However, such a measuring means adds to the complexity of the device and, more importantly, requires active manipulation by the patient, making the process of applying the prescription difficult and prone to human error.

[0024] It was identified that alternative methods for measuring the pole length, such as through a sensor built into the pole itself, had not previously been considered due to the challenges of powering the internal sensor and transmitting the sensor signal to the tool. In particular, the addition of a wired plug would be impractical from both a product design and usability perspective, while wireless methods would be difficult to implement due to practical design concerns and regulatory compliance.

[0025] Additionally, the programmable tool preferably requires additional interface means, such as a means for identifying individual struts, to allow the patient to correctly implement the prescription. This means could be, for example, an RFID reader that reads the unique identification code from the strut. However, this adds complexity and introduces a degree of uncertainty into the process, as the patient may mistakenly skip the step of identifying the strut, or, after correctly identifying a strut, mistakenly apply the prescribed length increase or decrease to a neighboring strut.

[0026] Therefore, with conventional solutions, the interaction between the adjustment tool, the post being adjusted, and the patient is cumbersome and can lead to operational errors. It would therefore be desirable to provide a system for adjusting an external fixation post that overcomes or at least mitigates the shortcomings identified with the prior art.

[0027] The technical problem underlying the present invention is to provide a new system for adjusting external fixation that overcomes or at least mitigates the disadvantages identified with the prior art. Prior art devices are disclosed in documents US Patent Application Publication Nos. 2008 / 051779 and 2002 / 010465.

[0028] The primary objective of the improved system of the present disclosure is to enhance automation of the adjustment process without burdening the user with additional tasks such as recognizing the pole number and externally measuring the pole length, and without relying on wireless data communication between the adjustment tool and the pole.

[0029] A further object of the improved system is to provide an improved interaction with the external fixator post, allowing efficient manipulation of the external fixator post while simultaneously automating / ensuring the adjustment process, while avoiding adjustment errors.

[0030] A further objective in improving the system is to keep the design rational and cost effective. Summary of the Invention

[0031] The solution idea underlying this disclosure is to integrate at least one data port inside the mechanical interface between the programmable tool and the support post, which can thus be employed to transmit the readings of the internal sensors to the controller driving the programmable tool.

[0032] According to this solution, the technical problem behind the present invention is solved by a programmable wrench for automatically adjusting the length of an external fixation post, the programmable wrench comprising: a mechanical connector for releasably engaging the external fixator post and for enabling transmission of at least an adjustment torque from the programmable wrench to the external fixator post; an electrical connector for releasably connecting with the external fixator and for enabling at least data transmission from the external fixator post to the programmable wrench; The mechanical and electrical connectors are integrated into a common port for joint engagement and disengagement to the external fixation post.

[0033] Data transmission can be conveniently achieved by housing one or more sensors within the strut, in particular a position sensor for measuring length.

[0034] Thus, a controller provided in or in communication with the programmable wrench is configured to retrieve at least measurements indicative of the length of the external fixation post via the port.

[0035] The controller is further configured to employ the above measurements indicative of the length of the external fixation post for feedback control when driving the motor according to the prescription.

[0036] Additionally, the controller may use these measurements to update the status of the struts to allow the surgeon to monitor the application of the prescription.

[0037] Furthermore, the strut may be equipped with a read-only memory containing a unique code for the strut's identification throughout the length adjustment operation, for example. By retrieving the identification code through the provided data transmission, the programmable tool's controller can automatically check whether the tool is connected to the correct strut and prevent negative operations.

[0038] In one embodiment, the controller can also retrieve and apply the appropriate increments / decrements from the prescription in light of the identified struts.

[0039] Preferably, the programmable wrench further comprises an electrical connection between the power source and the first and second connections, which further enables power transfer to the external fixator post, i.e., the electrical connector further enables power transfer from the programmable wrench to the external fixator post.

[0040] The electrical interface therefore has the dual function of providing both power and data communication for the sensor.

[0041] In a preferred embodiment, the common port is a wrench socket. By way of example, the wrench socket may be a hex socket and the corresponding tip of the external fixator post may be a hex key.

[0042] Preferably, the outer engagement surfaces are provided externally relative to the first and second coupling portions, for transmitting a resistive counter torque while transmitting a driving torque from the wrench to the external fixation post.

[0043] Preferably, the electrical connectors define a wired connection with the external fixation post, with the first electrode connected via the inner connector and the second electrode connected via the outer connector.

[0044] In a preferred embodiment, the inner connector is a pogo pin and the outer connector is a metal spring.

[0045] The technical challenges mentioned above are also An external fixation strut, comprising: an elongated body having a variable length through a rotatable adjustment mechanism; an adjustment mechanism mechanical connector for releasably engaging the programmable wrench and enabling transmission of at least an adjustment torque from the programmable wrench to the external fixation post; an electrical connector for releasably connecting with the programmable wrench and enabling data and / or power transfer between the external fixation post and the programmable wrench; The mechanical and electrical connectors are integrated at a common port and the joint is engaged and disengaged using a programmable wrench; This is resolved by external fixation.

[0046] The above-mentioned technical problems are: an elongated body having a variable length; At least one sensor embedded in the elongated body and capable of detecting at least a change in the length of the elongated body; This can also be resolved by using an external fixator.

[0047] Preferably, the external fixator strut according to the present invention further comprises at least one wired data port engageable with the programmable wrench for transmitting data to the programmable wrench about variations in the length of the elongated body, which is intended to automatically adjust the length of the external fixator strut.

[0048] In a preferred embodiment, the sensor is a position sensor that detects the position of a first shaft relative to a second shaft of the elongate body, and the first shaft and second shaft are telescopically connected to define the elongate body.

[0049] Preferably, the sensor is either an inductive sensor or a capacitive sensor.

[0050] Preferably, the sensor detects the position of a measurement cursor integrated into either the first shaft or the second shaft along a sensor strip integrated into the other of said first shaft or second shaft.

[0051] The above-mentioned technical problem further provides a programmable wrench for automatically adjusting the length of an external fixation post of an external fixation system, the programmable wrench comprising: obtaining prescription data (data) associated with the determined patient case, the prescription data including instructions for performing an adjustment of the patient's external fixation post; Guiding the user to perform an adjustment of the external fixation strut according to the prescription data (data); It is also solved by a programmable wrench configured to update the status of the external fixation system according to the readings of length sensors embedded in each of the external fixation posts.

[0052] The step of guiding the user to perform the adjustment of the external fixator posts includes at least the sub-step of instructing the user which external fixator posts should be adjusted.

[0053] During the step of guiding the user to perform an adjustment of the external fixation post, the wrench operates in a direction and time that is automatically calculated in view of the currently engaged post and updated prescription data.

[0054] Preferably, the activation time is feedback controlled according to the reading of a length sensor of the engaged external fixation post.

[0055] Preferably, the programmable wrench has a port for connection with an external fixation post, and said programmable wrench is capable of uniquely identifying the external fixation post to be connected via the port.

[0056] Preferably, the prescription data includes a schedule for adjusting the length of the external fixator strut, and the programmable wrench is configured to alert the user whenever an adjustment to the length of the external fixator strut is scheduled.

[0057] The features and advantages of the wrench, post, and system of the present disclosure will become apparent from the following description of several embodiments, taken in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0058] For a more complete understanding of the features and advantages of the present disclosure, reference is now made to the detailed description of four different support column embodiments of the present invention, taken in conjunction with the accompanying drawings.

[0059] [Figure 1] FIG. 1 is a side view of a first embodiment of an external fixation post according to the present disclosure. [Figure 2] 2 is a cross-sectional view of the external fixation strut taken along the section indicated by AA in FIG. 1. FIG. [Figure 3] 2 is a cross-sectional view of the external fixation strut taken along the cut plane indicated by BB in FIG. 1. [Figure 4] FIG. 1 is a perspective view of a second embodiment of an external fixation post according to the present disclosure. [Figure 5] FIG. 5 is a detailed view of the perspective view of FIG. 4. [Figure 6] FIG. 5 is a cross-sectional view along the middle portion of the retractable tube of the external fixation strut of FIG. 4. [Figure 7] FIG. 10 is a side view of a third embodiment of an external fixator post according to the present disclosure. [Figure 8] FIG. 8 is a cross-sectional view of the external fixation strut taken along the cut plane indicated by CC in FIG. 7. [Figure 9] FIG. 1 is a perspective view of one embodiment of an external fixator post according to the present disclosure. [Figure 10] FIG. 10 is a side view of a fourth embodiment of an external fixator post according to the present disclosure. [Figure 11] FIG. 11 is a cross-sectional view of the external fixation strut along the cutting plane indicated by DD in FIG. 10. [Figure 12] FIG. 11 is a cross-sectional view of the external fixation post taken along the cut plane indicated by EE in FIG. 10. [Figure 13] FIG. 10 is a side view of a fourth embodiment of an external fixator post according to the present disclosure. [Figure 14] FIG. 11 is a cross-sectional view of the external fixation strut along the cut plane indicated by FF in FIG. 10. [Figure 15] FIG. 10 is a perspective view of a fourth embodiment of an external fixation post according to the present disclosure. [Figure 16] FIG. 15 is an enlarged detail view of the area indicated by G in FIG. [Figure 17] FIG. 15 is an enlarged detailed view of the area indicated by H in FIG. [Figure 18] FIG. 1 is a top view of one embodiment of a programmable tool according to the present disclosure. [Figure 19] FIG. 10 is a side view of an embodiment of an external fixator post adjacent to an embodiment of a programmable tool in accordance with the present disclosure. [Figure 20] 20 is a cross-sectional view of the external fixation post adjacent to the programmable tool along the section indicated by II in FIG. 19. [Figure 21] FIG. 10 is a side view of an embodiment of an external fixator post adjacent to an embodiment of a programmable tool in accordance with the present disclosure. [Figure 22] 22 is a cross-sectional view of the external fixation post adjacent to the programmable tool along the section indicated at JJ in FIG. 21. [Figure 23] FIG. 23 is an enlarged detailed view of the area indicated by K in FIG. 22. [Figure 24] 1 is a schematic scheme of a medical assembly according to the present disclosure, in which a tool interacts with an external unit and an external fixation post. [Figure 25] FIG. 2 is a block diagram of an exemplary architecture and connections according to an embodiment of the present disclosure. [Figure 26A] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26B] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26C] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26D] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26E] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26F] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26G] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26H] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26I] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26J] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26K] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26L] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26M] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26N] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26O] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26P] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26Q] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26R] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26S] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26T] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26U] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26V] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 26W] 10 is an example of an interface displayed by a display of a tool according to an embodiment of the present disclosure. [Figure 27] 1 is a first half of a flowchart illustrating the operation of a tool according to an embodiment of the present disclosure. [Figure 28] This is the second half of the flowchart in Figure 27. DETAILED DESCRIPTION OF THE INVENTION

[0060] While the making and using of various embodiments of the present disclosure are discussed in detail below, it should be understood that the present disclosure provides many applicable inventive concepts that can be embodied in a variety of specific contexts. The specific embodiments discussed herein are merely illustrative of specific ways to make and use the present disclosure and do not limit the scope of the disclosure.

[0061] With reference to the above-mentioned drawings, a tool for adjusting an external fixator post according to the present disclosure is generally and generally designated 100, and different embodiments of an external fixator post are generally and generally designated 200, 200', 200'', and 200'''.

[0062] It should be noted that the drawings are schematic and not drawn to scale, but rather are drawn to highlight important features of the present invention. Furthermore, in the drawings, different elements are depicted schematically, and their shapes may vary depending on the application. It should also be noted that the same reference numerals in the drawings refer to elements that are identical in shape or function. Finally, certain features described in connection with an embodiment shown in one drawing may also be applicable to other embodiments shown in other drawings.

[0063] Obviously, as is well understood by those skilled in the art, some of the technical details of the present invention can be replaced by other technically equivalent details without departing from the scope of protection defined in the claims.

[0064] Additionally, when a sequence of process steps is shown, they do not necessarily have to be in the order shown; unless expressly indicated otherwise, the steps may be in the reverse order.

[0065] The programmable tool 100 of the present disclosure is configured to adjust the external fixation post 200, 200', 200''' by implementing enhanced interaction with and communicating with an external unit, such as a cloud unit and / or a user device, as disclosed below.

[0066] FIG. 1 shows a schematic side view of an improved external fixation strut 200 according to the present disclosure, in which an elongated body 211 having opposite ends 215, 216 is configured to be attached to respective fixation rings or arches of a preferably hexapod-type external fixator device.

[0067] The rings of the external fixation device body, which can be fixed to each part of the bone via half pins or wires, are known per se and are not shown in the accompanying drawings.

[0068] The elongated body 211 is formed by a first hollow tubular shaft 212 in which a second tubular shaft 213 is slidably received. The first shaft 212 consists of a hollow body 2120 terminating in a first end 215 and a slider 2121 that slides within the body 2120 and receives the second tubular shaft 213.

[0069] The relationship between the two bodies of the first shaft 212 and the relationship between the first shaft and the second shaft 213 gives the entire strut 200 a telescopic configuration so that the length of the elongated body 211 can be adjusted as needed to maintain the interconnected rings in a predetermined relative spatial relationship.

[0070] In particular, the relationship between the body 2120 and the slider 2121, which defines the length of the first shaft 212, is changed in a first length adjustment between the two attachment points of the strut 200, while the relationship between the first shaft 212 and the second shaft 213 is changed to fine-tune the length of the strut, particularly in post-operative follow-up.

[0071] Body 2120 and slider 2121 are locked together by a locking screw 2122 that is released upon manual adjustment of the relative positions of these two elements.

[0072] On the other hand, the position of the second shaft 213 relative to the first shaft 212 is adjusted by a rotatable adjustment mechanism 201 included in the casing 217 of the slide 2121 of the first shaft 212. The rotatable adjustment mechanism will be described in more detail with reference to FIG.

[0073] An external measurement cursor 219, firmly attached to the inner end of the second shaft 213 via legs that cross the longitudinal slit 220 of the slider 2121, slides along a scale 228 integral with the casing 217, thereby allowing the relative position of the second shaft 213 with respect to the first shaft 212 to be visually assessed.

[0074] The frame of the hollow body 2120 has an open side so that the scale 228 can be seen by a user. At one end of this open side, the frame has a transverse bridge 221. The bridge 221 is visible against the background of the scale 228, allowing the relative position of the slider 2121 with respect to the body 2120, and therefore the length of the first shaft 212, to be visually assessed.

[0075] FIG. 2 shows a cross-sectional view of the device of FIG.

[0076] The two ends 215, 216 of the strut 200 are provided with ball joints 218 which allow the strut 200 to articulate relative to the fixed ring or arch to which it is attached.

[0077] Rotation imparted via the rotatable adjustment mechanism 201 defines a displacement of the second shaft 213 relative to the first shaft 212 such that the second end 216 is pulled away from or towards the first end 215 due to the threaded connection.

[0078] In particular, the second shaft 213 has an externally threaded intermediate shank 2130 that is rotatably inserted within a sleeve 2160 at one end of each end 216 of the strut 200 and a slidable end piece 222 at the other end.

[0079] FIG. 3 shows a cross-sectional view of the rotatable adjustment mechanism 201 described above.

[0080] The rotatable adjustment mechanism 201 comprises a worm gear mechanism having a worm screw 2010 meshing with a worm gear 2011, which is coaxial with and threadedly engaged with the second shaft 213. Thus, rotation of the worm screw 2010 determines a corresponding rotation of the worm gear 2011, which in turn causes the second shaft 213 to translate relative to the first shaft 212.

[0081] The worm screw 2010 has a worm screw shaft 2012 that is perpendicular to the axis of the elongated body 211 .

[0082] A protruding head 2013 protruding from the side wall of the casing 217 rotatably receives the screw shaft 2010 and defines a second coupling portion 203 for attachment of a corresponding coupling portion of a wrench tool, as will be further described below.

[0083] The protruding head 2013 further defines an outer sleeve that surrounds the second coupling portion 203. In the illustrated embodiment, the outer sleeve has an inner circular profile and an outer hexagonal profile, the latter including an outer groove 210 for mounting a locking mechanism of an adjustment tool.

[0084] Details of the attachment are shown in Figure 9 and will be described with reference to an embodiment featuring the same attachment.

[0085] The position sensor 214 shown in Figure 2 above is provided in the first shaft 212 to sense the position of the measurement cursor 219. In this embodiment of the strut, the position sensor is based on inductive technology. It is glued to the outer surface. This sensor is also located inside the tubular element.

[0086] FIG. 4 shows an alternative embodiment of an external fixation post 200' that features an improved inductive position sensor 214'.

[0087] In such an alternative embodiment, the external fixation post 200' has substantially the same components and main features as the previously described embodiment, and therefore these components and features are indicated in the figures with the reference numbers already used and will not be described again in the following paragraphs.

[0088] The inductive position sensor 214' differs from the above-described position sensor 214 mainly in that the measurement cursor 219', the position of which is detected, is held inside the body of the first shaft 212, specifically inside the tubular element defined by the slide 2121.

[0089] The internal measurement cursor 219' is preferred as it does not interfere with the reading of the external scale and greatly reduces the risk of damage from handling.

[0090] On the other hand, the surrounding slide 2121 significantly interferes with reading the position of the internal measurement cursor 219', so the position sensor 214' needs to be precisely adjusted to cancel out the noise.

[0091] Figure 5 shows an enlarged detail view of the inductive position sensor 214' of Figure 4 described above. The internal measurement cursor 219' has a sled-like body with upper transverse grooves 2190 for receiving corresponding teeth on the bottom of the cylindrical slidable end piece 222 shown in Figure 6. The grooves and teeth interlock to define a connection for the measurement cursor 219' to interface with the end piece 222. The two elements may be glued or soldered together to ensure a more stable connection.

[0092] In another embodiment not shown in the accompanying drawings, the groove is not a through groove but is only present on the inner wall, so it is not visible from the outside. Holes can be added to the slider 2121 so that a cursor can be glued / welded.

[0093] The internal measurement cursor 219' further features a lateral protrusion 2191 that extends at least partially through the slit 220 and displays an index 2192 for visually reading the position of the element on the measurement scale below.

[0094] The internal measurement cursor 219' is fixed to the underside of the sled body and includes a gold-plated copper layer 2193 to prevent corrosion problems and to increase the antenna gain and improve the sensitivity of the instrument.

[0095] The inductive position sensor 214' further comprises a sensor strip 2142 obtained in a manner known per se.

[0096] FIG. 6 is a cross-sectional view of the external fixation post 200 ′ showing further details of the inductive position sensor 214 ′ and its sensor strip 2142 .

[0097] The sensor strip 2142 is mounted above an elongated support plate 2143 made of a ferromagnetic material (e.g., mu-metal). The ferrite plate 2143 serves to shield the sensor from external interference. The top surface of the sensor strip 2142 faces the internal measurement cursor 219', and the ferrite plate 2143 supports the sensor strip 2142 on its opposite side.

[0098] In manufacturing the device, the sensor strip 2142 can be adhered to the ferrite plate 2143 via a double-sided adhesive strip provided on the sensor strip 2142. The plate and strip combination is then inserted into the interior of the slider 2121 through the slit 220. Alternatively, a ferromagnetic plate is provided directly as the last layer of the sensor strip.

[0099] The position sensor 214' is preferably an absolute sensor.

[0100] FIG. 7 shows a schematic side view of a third embodiment of an external fixator strut 200'' according to the present invention.

[0101] The third embodiment is identical to the previous embodiments except for the position sensor 214'' which is based on capacitive technology.

[0102] FIG. 8 shows a cross-sectional view of the device of FIG.

[0103] A position sensor 214 ″ is glued to the inner surface of the slider 2121 and measures the relative position of the end piece 222 .

[0104] Thus, the position sensor 214 is housed within the casing 217 and is rigidly attached thereto, extending along the inner longitudinal length of the first shaft 212 .

[0105] The position sensor 214 detects the absolute position of the end piece 222 of the second shaft 213 and returns a measurement that can be used to assess the relative position of the second shaft 213 with respect to the first shaft 212 .

[0106] FIG. 9 shows a schematic perspective view of an external fixator strut 200'' according to a third embodiment of the present invention, without further elements being disclosed.

[0107] 10 to 15 show a fourth embodiment of an external fixation post 200''' having a shorter dimension compared to the long external fixation post 200' according to the first embodiment described above.

[0108] In such an alternative embodiment, the external fixation post 200''' has substantially the same components and major features as the longer embodiment described above. Therefore, these components and features are indicated in the figures with the reference numbers already used and will not be described again in the following paragraphs.

[0109] The main structural difference from the long version is that here the ball joint of the first shaft 212 is not located at its end 215, but at the opposite end of the hollow body 2120 of the first shaft 215, so that the two attachment points defined by the ball joint 218 are located closer to each other.

[0110] FIG. 16 shows the construction details of the position sensor 214 introduced earlier.

[0111] The flexible signal line 2141 of the position sensor is made in the form of a flat cable and connects the electronic board 2140 to the body of the sensor 214 extending in the vicinity of the sensed end piece 222 .

[0112] The electronics board 2140 is intended to power and transmit data to the sensors and is intended to connect to the programmable tool 100 via a connection system described below.

[0113] It is observed that the flexible signal line 2141 has at least one curvature to connect the housing of the rotatable adjustment mechanism to the remainder of the shaft, and this curvature is designed to maintain an above threshold radius to prevent damage to the signal line during the manufacturing process.

[0114] The same structure of the electronics board 2140 with the flexible signal lines 2141 is also suitably employed in the position sensors 214', 214'' of the second and third embodiments.

[0115] FIG. 17 shows details of the construction of the end piece 222 introduced above.

[0116] As can be seen in the drawing, the end of the shank 2130 is rotatably inserted into the sleeve 2220 of the end piece 222 through an intervening ring 2221. The ring 2221 allows the end piece 222, and therefore the cursor 219, to move along the longitudinal axis of the strut 200''' while the shank 2130 rotates.

[0117] FIG. 18 is a top view of a programmable tool 100 according to the present disclosure in the form of a wrench, and in particular a power wrench.

[0118] The wrench has a rigid outer casing 111 .

[0119] In the illustrated embodiment, the casing 111 has a generally cylindrical shape, but the shape of the housing 111 may be any shape and size that is convenient for use.

[0120] In the illustrated embodiment, the casing 111 defines a handpiece having a distal grip portion 112 with an ergonomic handle followed by a proximal interface portion 113 .

[0121] The housing may include various connection ports, connectors, displays, and controllers.

[0122] In particular, in the illustrated exemplary embodiment, the interface portion includes a first push button 114 and a second push button 115, also identified herein as Button 1 and Button 2, a display 116, and an indicator 120, such as a circular LED indicator (e.g., including an RGB LED) that can illuminate in various colors and in a steady or flashing mode to inform the user of the operational status of multiple devices.

[0123] In a preferred embodiment, the circular LED indicator can have up to four illumination states, indicating a user invoking an action, a wrench operation in progress, and the success or failure of the wrench operation. In one embodiment, there can be additional states for the LED indicator, such as indicating a charging operation.

[0124] The LED indicators may be covered by a transparent light guide integrated into the casing 111 .

[0125] The device may further include a buzzer or other audio device, and, as described below, the device may also include wireless charging means, as well as near field communication (NFC) means for communicating with other electrical devices.

[0126] The device further comprises a front muzzle 107 forward of the interface portion 113, which is arranged to connect to a torque input port of the rotatable adjustment mechanism 201 of the external fixation post 200, 200', 200'', 200'''.

[0127] FIG. 19 shows a side view of the programmable tool 100 being coupled to an external fixation post 200 .

[0128] FIG. 20 is a cross-sectional view of the two devices of FIG. 19, showing generally the main components inside the casing 111 of the programmable tool 100.

[0129] The programmable tool 100 comprises a power source 106 in the form of a rechargeable battery, an electric motor 102 preferably with a gearbox in series with a coaxial output shaft 101, and a controller 104, for example in the form of a PCB. The controller 104 is configured to manage the operation of the tool 100, but is not limited to any particular configuration.

[0130] The battery 106 is preferably charged wirelessly through inductive technology to minimize electrical hazards to the user. Wireless charging means may therefore be provided.

[0131] The programmable tool 100 also includes an internal memory that can be conveniently used to store the patient's prescription and the actual lengths of the struts that make up the external fixator device as adjusted by the tool 100. In any case, the present disclosure is not limited by the structure of the tool memory, which can be an integral part of the controller 104 or a separate memory portion operably connected to the controller 104.

[0132] The programmable tool 100 further comprises means for data communication with an external unit, in particular an external data source, for example in the form of a data port and / or a wireless connection (herein referred to as "TX"). Whatever suitable means are used for this purpose, preferably the programmable tool has a SIM housing (not shown) for providing the device with an Internet connection. Such means TX may include, for example, a Bluetooth or Wi-Fi connection port, as well as the aforementioned NFC means, for connection with a user device or other external devices.

[0133] The controller 104 of the programmable tool 100 is configured to communicate with an external portal directly or via a portable electronic device such as a smartphone to obtain a surgeon's prescription and update the status including at least the lengths of the multiple external fixation posts 200, 200', 200'', 200'''' of the external fixation device.

[0134] The controller 104 is connected to push buttons 114, 115, a display 116, and a circular LED indicator to read user commands, communicate status updates, or guide the user through the process of adjusting all the struts 200, 200', 200'', 200''' according to a given prescription.

[0135] The muzzle 107 of the programmable tool 100 houses an output shaft 101 which terminates in a first connecting portion 103 in the shape of a wrench socket, in particular a hex socket.

[0136] The muzzle further includes a locking mechanism 109 operable to secure and selectively release the engagement between the first coupling portion 103 and the second coupling portion 203. When the locking mechanism 109 is engaged, the protruding head 2013 of the rotatable adjustment mechanism 201 is received within the annular recess 108 of the muzzle 107, as best seen in FIG.

[0137] The locking mechanism 109 is defined by the body of the muzzle 107, which can be drawn towards the housing 111 of the programmable tool 100 by pressing against a resilient means, which can be in the form of a spring 1090, as best shown in Figure 23. The muzzle 107 includes an internal latch element 110, which can be in the form of a roller that moves along an oblique path, and which is externally biased by the action of the spring 1090 into engagement with the first coupling part 103.

[0138] A first connection portion 105 is provided around the first coupling portion 103, and this first connection portion 105 is electrically connected to the second connection portions 205 of the struts 200, 200', 200'', 200'''.

[0139] When the locking mechanism 109 is engaged, the first connecting portion 105 connects to the second connecting portion 205 of the post 200, 200', 200'', 200''', providing a data connection that allows the controller 104 to obtain data from the sensor 214.

[0140] The electrical connection also ensures power supply from the power source 106 to the sensor 214 .

[0141] FIG. 21 shows a further side view of the programmable tool 100 being coupled to the external fixation post 200 .

[0142] FIG. 22 is a cross-sectional view of the two devices of FIG.

[0143] FIG. 23 is an enlarged view of FIG. 19 showing the details of the first connection portion 105. As shown in FIG.

[0144] The first connection portion 105 comprises a number of inner connectors 1050, preferably in the form of pogo pins, at the bottom of the annular recess 108 for connecting the first electrodes.

[0145] Additionally, the first connection portion 105 preferably comprises a plurality of outer connectors 1051 in the form of clips, tape springs or leaf spring connectors that protrude from the outer side of the annular recess 108. The outer connectors 1051 are for connecting to the second electrode.

[0146] In use, the inner connector 1050 contacts the inner surface 2050 of the outer sleeve of the protruding head 2013, and the outer connector 1051 contacts the outer surface 2051 of the outer sleeve. As best seen in Figure 12, the inner surface 2050 and the outer surface 2051 are separated by a dielectric layer 2052.

[0147] To improve the interaction between the tool 100 and the external fixation strut 200, according to the present disclosure, the controller 104 advantageously includes a set of instructions that, when executed, cause the tool 100 to automatically perform the operations disclosed below.

[0148] FIG. 24 is a schematic scheme of a medical assembly 1000 including the tool 100 and an external fixator post 200 having the rotatable adjustment mechanism 201 disclosed above for length adjustment.

[0149] The same scheme naturally applies to the different embodiments 200', 200'' of the external fixation strut 200.

[0150] As mentioned above, the external fixator strut 200 comprises a second connection portion 205 for data communication with the tool 100. Meanwhile, the tool 100 comprises a first connection portion 105 configured for data communication with the external fixator strut 200 via the second connection portion 205.

[0151] Therefore, as described above, the first connection portion 105 and the second connection portion 205 also enable data transmission between the external fixation column 200 of the tool 100 and the controller 104, for example, data transmission from a sensor of the external fixation column 200 to the controller 104.

[0152] In operation, controller 104 is configured to first associate tool 100 with a particular patient case. For example, controller 104 may load information about the patient into tool 100's memory and allow that information to be recalled as needed (e.g., upon powering on tool 100 at the beginning of this association phase). The surgeon (or other authorized operator) may then confirm the association and proceed to the next operational step, for example by pressing one of the pushbuttons (e.g., button 1) on tool 100. In this manner, this initial association has been made and confirmed by the surgeon, and the tool is ready for use with the next patient.

[0153] Preferably, once the controller 104 is associated with a particular patient, it is configured to download prescription data (hereinafter "DATA") relating to that patient from an external unit such as a cloud unit (hereinafter designated by reference numeral 300) as described above. In some embodiments, the download may occur automatically.

[0154] The external unit 300 is for example a web server to which the tool 100 has direct or indirect access via its means TX.

[0155] For example, the tool 100 may be connected via the means TX to a user device 310, such as a smartphone, which is equipped with a suitable application or has access to a dedicated internet portal to perform a connection with an external unit 300 and which can download prescription data DATA to the tool 100, in particular to its memory.

[0156] Thus, the download of data may occur directly through the tool 100 itself or indirectly through the user device, and this also applies to subsequent updates that are downloaded.

[0157] The prescription data DATA relates to the patient case with which the tool 100 is associated and includes information and instructions for performing adjustments to the patient's external fixation strut 200, such as a set of dates and / or times when adjustments to the external fixation strut 200 should be performed, as well as the extent of adjustment, for example, in terms of strut length per each adjustment step.

[0158] It can be seen that each prescription has an expiration date, if the prescription is not downloaded within the expiration date, the prescription will become invalid and no further treatment will be allowed.

[0159] Once the download is complete, the surgeon (or other suitable operator) can confirm by pressing one of the push buttons (e.g., button 1) on tool 100. Thus, in a typical setup operation, the surgeon will confirm successful download of prescription data DATA as described above. As will be described below, if the prescription is updated, the patient will receive the update (e.g., via a mobile app), confirm the download of the updated prescription, and then be able to confirm its success.

[0160] Once the above preliminary operations (i.e., preliminary association and prescription download) have been completed by the surgeon (or other suitable operator), for example after further pressing one of the push buttons, the controller 104 puts the tool 100 into a standby state in which it waits for preliminary connection with the patient's external fixation strut 200, in particular data communication with the patient's external fixation strut 200 via the first connecting portion 105.

[0161] In this case too, this preliminary connection is performed by the surgeon (or other suitable operator), and in particular, after the tool 100 is connected to the external fixation strut 200 in the preliminary connection operation, the controller 104 can automatically recognize the connection status between the tool 100 and the external fixation strut 200 and notify this connection status.

[0162] Based on this connection, the controller 104 then performs communication, particularly data communication, with the external fixation strut 200 via the first connection portion 105 and the second connection portion 205 .

[0163] In particular, during this pre-coupling, the controller 104 can write an ID into the strut memory in order to provide a unique ID to a new strut or to re-code an incorrectly coded strut. In other words, during the above-mentioned pre-coupling, the controller 104 is configured to assign a strut ID to the external fixation strut 200 in order to identify it.

[0164] The link may also exchange other preliminary information with the pole (e.g., reading the ID if one has already been assigned, reading the pole's length, etc.; more on this below).

[0165] Then, after coupling with the external fixation post 200 and exchanging preliminary information (i.e., after the preliminary coupling described above), the tool 100 (i.e., its controller 104) enters an idle state awaiting the prescribed time / date to apply the adjustment of the post (e.g., upon further depression of the push button after coupling is complete).

[0166] In this idle state, the patient can also check the date and time of the next adjustment, for example by pressing a push button on the tool 100.

[0167] When the strut adjustment date / time is reached, tool 100 issues a warning (visual and / or audible warning) and the patient presses a push button (e.g., button 1) on tool 100. Controller 104 is then configured to transition tool 100 to a further standby state awaiting a subsequent mechanical coupling with strut 200 to perform the prescribed adjustment to that strut. The subsequent coupling operation involves a mechanical engagement between tool 100 and tool 200 and is typically performed by the patient.

[0168] The controller 104 is configured to activate the tool 100 for future treatments. In one embodiment, activation of the tool 100 is performed using an internal RTC.

[0169] In one embodiment, if there are any upcoming treatments, the controller 104 is also programmed to estimate the power budget required to complete all treatments.

[0170] Then, when the tool 100 is mechanically engaged by the patient to the external fixator post 200, the controller 104 is configured to automatically apply the prescribed adjustment by driving dedicated means of the tool 100 that act on the rotatable adjustment mechanism 201 of the external fixator post 200. More specifically, the controller 104 is configured to drive the motor 102 of the tool 100 according to the prescription data DATA to apply the appropriate adjustment to the post 200. As will be explained below, the length of the external fixator post 200 can be used to control the driving means of the tool 100.

[0171] Once the tool 100 is engaged with the external fixation post for correction, the patient is notified that the tool has successfully adjusted the incremental length of the post, and a new press of the push button (e.g., button 1) can return the tool to its idle state.

[0172] Typically, a fixation device is composed of multiple struts, for example, six struts. Therefore, after completing coupling with one external fixation strut, the controller 104 is configured to check whether the tool 100 is to be engaged with another external fixation strut, and if yes, to put the tool 100 into a standby state (for example, after pressing a push button) to wait for coupling with another external fixation strut. This applies to both preliminary coupling performed by the surgeon and mechanical engagement performed by the patient, and the patient is accurately guided and errors are avoided by pre-pairing and generating error messages.

[0173] Thus, in one embodiment, after the surgeon has preliminarily paired the tool 100 with the posts 200, the tool 100 knows the exact identity of each post 200 of the external fixation device (e.g., correct post 1, post 2, etc.). Thus, if the patient has fitted the wrong post, the tool 100 is configured to provide feedback to the user and warn them in the form of an error message so that the patient knows that they have fitted the wrong post.

[0174] When the patient engages the post 200 with the tool 100, the tool 100 obtains useful information (hereinafter referred to as "INFO") from the external fixation post 200, such as its length.

[0175] In one embodiment, the actual length of the external fixator post 200 is obtained by the controller by reading data from the position sensor 214 of the external fixator post 200 .

[0176] Thus, the information INFO (exchanged during successive couplings by the patient) relates to a measurement value indicative of the length of the external fixation post 200, and the controller 104 is configured to obtain at least said length from the position sensor 2014 of the external fixation post 200 when the tool 100 is connected to the external fixation post 200. This value is used in successive adjustment steps for feedback control when driving the tool 100 according to the prescription data DATA.

[0177] Additionally, other information may be exchanged as part of the information INFO, such as a post ID for identifying the external fixation post 200 or other useful information.

[0178] As mentioned above, the tool 100 is configured to issue a warning when a predetermined adjustment date / time is reached, allowing the patient to quickly connect the tool 100 to the post 200 if desired. However, the user can also postpone applying the adjustment to the external fixation post 200 when the warning is issued, for example, by pressing one of the push buttons on the tool 100. In one embodiment, pressing push button 1 puts the tool into a standby state awaiting connection to the post, while pressing button 2 postpones the adjustment.

[0179] More particularly, in one embodiment, when a correction is to be made and an alert is generated, the controller 104 is programmed so that the patient has the following options: -Implement all corrections immediately - Immediate partial correction - Snooze the tool's warnings and postpone remediation without performing any remediation until the next remediation - Pause the warning and postpone the correction, allowing the correction to take place at any time between the postponed operation and the next adjustment to be made.

[0180] If a remediation is postponed and no user action is taken until the next remediation, the postponed remediation will be automatically performed at the next remediation. In this case, the postponed remediation is added to the standard remediation to be applied at the next remediation step. In one embodiment, if a postponement is selected (or a partial remediation is performed), the amount of remediation added at the next remediation step is determined based on the time elapsed since the last remediation.

[0181] Furthermore, as mentioned above, according to one embodiment of the present invention, the controller 104 is configured to detect updates to the prescription data DATA from the external unit 300 and download said updates directly to its memory or indirectly via the user device 310, while replacing previously downloaded prescription data with the updated prescription data so that the correct prescription is always applied.

[0182] It is therefore clear that automating the operation of tool 100 avoids patient error, improves the overall post-operative adjustment process, and properly guides the patient through all steps of the operation of tool 100.

[0183] FIG. 25 is a block diagram of an exemplary structure and connections according to an embodiment of the present disclosure, with only data connections shown for clarity.

[0184] In the illustrated example, the controller 104 of the tool 100 includes a main board 600 that integrates appropriate software modules for implementing the functionality of the tool 100 disclosed above.

[0185] The communication module 601 is configured to establish a communication protocol with the stanchion 200. Communication between the tool 100 and the stanchion 200, 200', 200'', 200''' occurs over a DC coupled bus over which both power and data are transmitted. In one embodiment, communication occurs over a half-duplex serial bus over which data is written to or read from the stanchion 200, 200', 200'', 200'''.

[0186] The communications module 601 performs two main functions: writing an identification code to give a new strut an identification ID or to re-code an incorrectly coded strut (this operation is performed by the surgeon or other suitable operator as described above), and reading the strut ID (performed in both surgeon mode and patient mode to read the ID of the strut after it has been coupled to a tool).

[0187] The communication module 601 is also configured to be able to read the length and position of the pole via the pole sensor.

[0188] The controller 104 is also programmed to implement a power management module 602 configured to manage all power paths of the tool 100 .

[0189] The controller 104 is also programmed to implement a USB data connection module 603 and a motor management / encoder module 604 .

[0190] More specifically, the motor management / encoder module 604 is configured to ensure proper motor (including brushed motor) driving. The motor drive hardware detects motor faults / overloads, sets the speed, and verifies that the target speed is achieved using closed-loop PID control. Specifically, motor acceleration / deceleration ramps are implemented, and operation is controlled by closed-loop PID control using feedback Hall sensor readings.

[0191] Additionally, a buzzer / LED ring module 605 is implemented as part of the safety module and is configured to notify the operator / patient when an error, warning, or notification occurs, as described above. The audio signals may have predetermined patterns that change depending on the situation, and these audio signals correlate with the color of the corresponding LED. The LED ring 120 is driven by a serial concatenated bus (shift register) that sends color and brightness information to the LEDs. This operation is performed continuously so that the appropriate color is always displayed depending on the alarms active on the system.

[0192] The software module then includes a keyboard management module 606 configured to recognize pushbutton presses on the tool 100 and trigger appropriate actions.

[0193] The software module further comprises an external flash and RAM module 607 and a display module 608 .

[0194] Additionally, the connectivity module 609 is configured to allow connection to external devices 300, for example, to check for new firmware updates, check for new prescriptions, upload the latest life counters, logs, or data that needs to be loaded to the cloud, or receive commands to enable a particular operating mode of the tool 100 (e.g., service mode or surgeon mode).

[0195] Finally, the safety module 610 is configured to ensure proper and safe operation of the tool.

[0196] As part of the safety module, the prescribed extension amount is monitored during treatment both from the data readout from the sensor on the strut and from the rotation of the motor shaft. Appropriate calculations are applied taking into account the gearbox reduction ratio between the motor of the tool 100 and the strut. If said value does not fit within a predetermined threshold, the controller is configured to switch the tool 100 into a safety mode. In other words, the controller is configured to monitor the rotation of the output shaft 101 and evaluate the gearbox reduction ratio between the motor 102 of the tool 100 and the strut 200.

[0197] The controller 104 can be configured to generate interfaces I1-I23 on the display 116 of the tool 100, which interfaces I1-I23 are configured to indicate respective operational states of the tool 100.

[0198] Figures 26A-26W show example interfaces that may be displayed on a display of a tool according to an embodiment of the present disclosure, and are described below in conjunction with Figures 27 and 28.

[0199] 27 and 28 show the first and second halves of a flow diagram of the operation of tool 100 disclosed above in connection with FIG.

[0200] In summary, the device can be switched from the OFF state 500 to the ON state 501 by the user, for example, by pressing Button 1 or Button 2 for a period of time. This may correspond to the transition from interface I1 in Figure 26A to interface I2 in Figure 26B.

[0201] A similar user action may be required for the device to return to the off state 500.

[0202] After a certain period of time has passed since powering on, the device becomes associated with a particular case 502, represented by interfaces I3, I4, and I5 in Figures 26C, 26D, and 26E.

[0203] Then, after a command from the user, the device connects to the Internet and retrieves the prescription data DATA for the patient's case 503 from a dedicated portal and notifies the patient once this prescription has been successfully transferred to the tool memory, as shown by interfaces I6, I7, and I8 in Figures 26F, 26G, and 26H.

[0204] As mentioned above, there are multiple ways to connect directly or indirectly to the external unit 300 (eg, GSM, BT, NFC, WiFi), and the present invention is not limited by the communication means employed.

[0205] After the prescription is uploaded to internal memory, the device enters a general standby state 504, which may be communicated to the user via the display 116 and / or the circular LED indicator, as shown in interface I9 of FIG. 26I.

[0206] Upon receiving a user command, for example pressing button 1, the device enters a waiting to connect state 505 and signals via display 116 that it is ready to connect to a particular pole, as shown in interface I10 of FIG. 26J.

[0207] In the Waiting to Connect state 505, the user is expected to mechanically connect the device to the support 200, and a data connection will be established as described above. Once the tool is connected to the support, this is indicated at interface I11 in Figure 26K, and once the connection is complete, this is indicated at interface I12 in Figure 26L.

[0208] Once the data connection is made (507), the device suggests to the user that other poles 200 may then be similarly connected.

[0209] Once all the struts 200 are properly connected, the device will be in the connected state 508, as shown at interface I13 in Figure 26M.

[0210] Thereafter, upon command from the user, the device enters an idle state 509 (interface I14 in FIG. 26N) and is ready to send a signal when the prescribed correction date / time 510 is reached. In this state, the user can query the device, for example by pressing button 1, and the device will display the next correction date and time 511 (interface I15 in FIG. 26O).

[0211] And finally, when the correction time 510 is reached, the user may be notified via audio and / or visual signals (as represented by interface I16 in FIG. 26P) that action needs to be taken.

[0212] The user will then be allowed to choose whether to proceed with or postpone the adjustment of the pole 512. Button 1 and Button 2 may be used interchangeably to distinguish between the two options.

[0213] If the user decides to perform the correction, the device will guide the user to engage (513) the post 200 to be adjusted (interface I17 in FIG. 26Q). Once the external fixation post 200 is engaged, the device will automatically perform the adjustment in adjustment step 514 and then notify the user that the adjustment is complete (515) (interfaces I18 and I19 in FIGS. 26R and 26S).

[0214] If another strut is to be adjusted, steps 513-515 are repeated, otherwise the device notifies the user that the correction is complete (516) (interface I20 in FIG. 26T) and returns to idle state 509.

[0215] From the idle state 509, the device can also update the prescription 517 whenever a prescription update is detected (see interfaces I21, I22, and I23 in Figures 26U, 26V, and 26W). This update can be activated by the patient pressing a push button while the tool is in the idle state, or automatically by the tool 100 periodically checking for updates, for example by interacting with the external unit 300.

[0216] In one embodiment, the patient or surgeon can engage the tool 100 with a particular strut 200 at any time (except during the correction phase) to obtain the strut length (state 518), and upon pressing one or more buttons, the controller 104 is configured to initiate a test of the strut 200 to ensure that both the strut mechanics and firmware are operating as expected (state 520).

[0217] Additionally, in one embodiment, during the strut adjustment operation, the patient can remove the tool 100 from the strut 200 (state 522) as a safety mechanism in case the patient experiences pain during the procedure.

[0218] It will be understood that the specific embodiments described herein are shown by way of illustration and not as limitations of the disclosure. The principal features of the disclosure can be employed in various embodiments without departing from the scope of the disclosure. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific techniques described herein.

[0219] All publications and patent applications mentioned in this specification are indicative of the level of skill of those skilled in the art to which this disclosure pertains. All publications and patent applications are herein incorporated by reference to the same extent as if each individual publication or patent application was specifically and individually indicated to be incorporated by reference. 。

[0220] The use of the word "a" or "an," when used in conjunction with the word "comprising" in the claims and / or specification, can mean "one," but is also consistent with the meanings of "one or more," "at least one," and "one or more than one." Although the present disclosure supports definitions that refer only to alternatives and "and / or," use of the term "or" in the claims is used to mean "and / or" unless explicitly indicated to refer only to alternatives or the alternatives are not mutually exclusive.

[0221] As used in this specification and the claims, the words "comprising" (and any form of "comprising," such as "comprise" and "comprises"), "having" (and any form of "having," such as "have" and "has"), "including" (and any form of "including," such as "includes" and "include"), or "containing" (and any form of "containing," such as "contains" and "contain") are inclusive or open-ended and do not exclude additional, unrecited elements or method steps.

[0222] Obviously, those skilled in the art can make various modifications and variations to the above-described tools to meet their fortuitous and particular needs, all of which are within the scope of the present invention as defined by the appended claims.

Claims

1. A programmable wrench (100) for automatically adjusting the length of an external fixation post (200, 200', 200", 200"), said programmable wrench (100) comprising: a mechanical connector (103) for releasably engaging with the external fixator post (200, 200', 200", 200'") and for enabling the transmission of at least an adjustment torque from the programmable wrench (100) to the external fixator post (200, 200', 200", 200'"); an electrical connector (105) for releasably connecting with said external fixator post (200, 200', 200", 200'") and for enabling at least data transmission from said external fixator post (200, 200', 200", 200'") to said programmable wrench (100); Equipped with A programmable wrench (100) wherein the mechanical connector (103) and the electrical connector (105) are integrated at a common port for joint engagement and disengagement with the external fixation post (200, 200', 200", 200''').

2. 2. The programmable wrench (100) of claim 1, wherein the electrical connector (105) further enables power transfer from the programmable wrench (100) to the external fixation post (200, 200', 200", 200''').

3. 2. The programmable wrench (100) of claim 1, wherein the electrical connector (105) defines a wired connection with the external fixation post (200, 200', 200", 200'''), a first electrode being connected via an internal connector (1050) and a second electrode being connected via an external connector (1051).

4. 4. The programmable wrench (100) of claim 3, wherein the internal connector (1050) is a pogo pin and the external connector (1051) is a metal spring.

5. An external fixator strut (200, 200', 200", 200'''), comprising: an elongated body (211) having a variable length through a rotatable adjustment mechanism (201); a mechanical connector (203) of said adjustment mechanism (201) for releasably engaging with a programmable wrench (100) and enabling transmission of at least an adjustment torque from said programmable wrench (100) to said external fixation post (200, 200', 200", 200'''); an electrical connector (205) for releasably connecting with the programmable wrench (100) and for enabling data and / or power transmission between the external fixation post (200, 200', 200", 200'") and the programmable wrench (100); The mechanical connector (203) and the electrical connector (205) are integrated at a common port for joint engagement and disengagement with the programmable wrench (100).

6. an elongated body (211) having a variable length; and at least one sensor (214, 214', 214") embedded in the elongated body (211) and capable of detecting at least a change in the length of the elongated body (211).

7. 7. The external fixator strut (200, 200', 200", 200'") of claim 6, further comprising at least one wired data port engageable with a programmable wrench (100) for automatically adjusting the length of the external fixator strut (200, 200', 200", 200'") to transmit data regarding the variation in length of the elongated body (211) to the programmable wrench (100).

8. the sensors (214, 214', 214") are position sensors that detect the position of the first shaft (212) relative to the second shaft (213) of the elongated body (211); The external fixation strut (200, 200', 200", 200'") of claim 7, wherein the first shaft (212) and the second shaft (213) are telescopically connected to define the elongate body (211).

9. The external fixation strut (200, 200', 200", 200''') according to claim 8, wherein said sensor (214, 214', 214") is either an inductive or capacitive sensor.

10. The external fixation strut (200, 200', 200", 200'") of claim 9, wherein the sensor (214, 214', 214") detects the position of a measurement cursor (219, 219') integrated into either the first shaft (212) or the second shaft (213) along a sensor strip (2142) integrated into the other of the first shaft (212) or the second shaft (213).

11. A programmable wrench (100) for automatically adjusting the length of an external fixation post (200, 200', 200", 200'") of an external fixation system, said programmable wrench (100) comprising: obtaining prescription data (Data) related to the determined patient case and including instructions for performing an adjustment of the external fixation strut (200) of said patient; Guiding a user to perform an adjustment of the external fixation post (200, 200', 200", 200''') according to the prescription data (Data); A programmable wrench (100) configured to update the status of said external fixation system according to readings of length sensors (214, 214', 214") embedded in each of said external fixation posts (200, 200', 200", 200'").

12. 12. The programmable wrench (100) of claim 11, wherein the step of guiding a user to perform an adjustment of the external fixator posts (200, 200', 200'', 200''') comprises at least a substep of indicating to the user which external fixator posts (200, 200', 200'', 200''') should be adjusted.

13. 13. The programmable wrench (100) of claim 12, wherein in the step of guiding a user to perform an adjustment of the external fixation post (200, 200', 200'', 200'''), the wrench operates in a direction and time automatically calculated in view of the currently engaged post (200, 200', 200'', 200''') and the updated prescription data (Data).

14. 14. The programmable wrench (100) of claim 13, wherein the actuation time is feedback controlled according to the readings of the length sensors of the engaged external fixator posts (200, 200', 200'', 200''').

15. 12. The programmable wrench (100) of claim 11, wherein the programmable wrench (100) has a port for connection with an external fixator post (200, 200', 200'', 200'''), and the programmable wrench (100) is capable of uniquely identifying the external fixator post connected via the port.

Images