Internal traction drive system for exoskeleton for hand orthoses and prostheses

Abstract

The present invention relates to a drive system configured to fit in an exoskeleton device for orthoses and prostheses. In particular, said orthotic and prosthetic device is configured to be placed on the remaining stump of a patient's phalange. Once in place, said orthotic and prosthetic device can switch between the two states of flexion and extension. In order to achieve said switching between the two aforementioned states, the orthotic and prosthetic device comprises the drive system according to the present invention, wherein, assisted by an internal traction assembly in conjunction with the movement generated by the metacarpophalangeal joint (MCP), said drive system of the present invention is able to efficiently transmit the movement desired by the user, in other words, in a stable, firm manner, with a suitable force transmission, thereby allowing considerably increased adaptability to the patient.

Description

[0001] INTERNAL TRACTION DRIVE SYSTEM FOR EXOSKELETON FOR ORTHOSIS AND PROSTHESIS OF THE HAND of the Invention

[0002] The present invention falls within the field of biomedical engineering and orthopedics, focusing particularly on the development of improved drive systems for incorporation into exoskeletons for orthoses and prostheses. This field encompasses the application of advanced mechanical technologies to provide ergonomic and anatomical solutions in devices intended for the mobility and rehabilitation of patients with finger amputations, specifically those that preserve the proximal and / or middle phalanx, focused on an advantageous and significant improvement in the functionality and aesthetics of exoskeletons, allowing effective adaptation to different anatomical conditions, with an emphasis on the simultaneous traction of phalanges to replicate the natural movement of the hand.

[0003] Background of the Invention

[0004] Continuous progress in the development of prosthetic devices has represented an essential response to addressing the needs of those who have experienced the loss of a part of their anatomy. In this context, the focus has been on replacing missing human body parts and restoring or emulating their functions, with particular emphasis on the creation of prostheses intended to replace missing phalanges, such as those designed for hands and fingers.

[0005] Despite the progress made, notable shortcomings persist in existing prosthetic devices. One area of ​​concern centers on the drive systems, which, unfortunately, often exhibit inefficiencies that limit the device's ability to perform full extension and flexion movements. Furthermore, drive systems tend to lack the ability to transmit force effectively, relegating prostheses to a more aesthetic than functional role.

[0006] This technical challenge is exacerbated by the lack of ergonomic adaptation to the patient's residual limbs, resulting in discomfort, pain, and, most critically, hindering the fundamental purpose of facilitating patient adaptation to the device.

[0007] The significance of these deficiencies lies in patients' inability to fully adjust to prostheses, as they perceive that the functionality of these devices does not adequately match their natural limbs. Furthermore, inefficient drive mechanisms prevent the prosthetic device from making efficient transitions between extension and flexion, placing the user in an intermediate position that complicates the performance of daily activities.

[0008] Within the state of the art, efforts have been recorded that have attempted to address these problems, highlighting initiatives that seek to overcome the aforementioned limitations.Such is the case of US patent US9375319 B2, published on October 9, 2014, which shows a prosthetic assembly that includes distal phalanges and proximal phalanges operatively connected to said distal phalanges; likewise, the prosthetic assembly according to US patent '319 comprises a clamping ring, specifically configured to couple inside it to the user's thumb, said clamping ring having an operative connection with the distal phalanges; said assembly further comprises a proximal phalanx yoke that has an operative connection with the clamping ring previously described; said proximal phalanx yoke is configured to pull a cage and cause movement of the partial finger portion of the device when the user bends the metacarpal joint in his hand.

[0009] Likewise, known within the state of the art is US patent application No. US20170056208 A1 , published on March 2, 2017, which refers to a prosthetic assembly specially designed for a patient's thumb, which includes an H-shaped rocker and a distal ring configured to receive the user's residual thumb. Said distal ring and the rocker are each independently and rotatably coupled between a coupling tip and a proximal anchor plate configured to attach to a hand strap secured to a user. The coupling tip articulates in response to a pulling force on the H-shaped rocker.

[0010] Additionally, the assembly described in said US '208 application includes a ring mounted on a ring tendon that is rotatably coupled between an engagement tip and a proximal anchor plate, which is rotatably coupled to a hand strap attached to the user, and wherein vertical movement of the residual thumb within the ring actuates the engagement tip within a vertical plane. Lateral movement of the residual thumb within the ring actuates the engagement tip within a lateral plane. The prosthetic thumb assembly has a fourth operable articulating connection that is located above the midline such that the engagement tip articulates in response to a pulling force provided by a rocker arm.

[0011] On the other hand, Spanish patent ES2373847 T3, published on February 9, 2012, is known, which discloses a prosthesis for providing at least one mechanically operable finger member, said prosthesis comprising a worm gear wheel on a support member of the prosthesis; a finger member comprising a drive motor, said finger member being mounted to rotate about the axis of the worm gear wheel; a worm screw coupled to the drive motor and in mesh with the worm gear wheel such that when the drive motor is activated, during use of the prosthesis, the finger member moves around the worm gear wheel such that the finger member rotates with respect to the support member, the worm screw being arranged outside the finger member;and transmission means configured to couple the movement of the drive motor to the worm screw.;

[0012] The invention described in said patent ES'847 mentions that the transmission means are configured in such a way that the axis of rotation of the worm screw is inclined with respect to the axis of rotation of the drive motor, and furthermore, the prosthesis has each finger structured to extend tangentially around a helical wheel in the main body of the prosthesis and includes a tubular housing to contain the helical drive motor.

[0013] Based on the most recent advances in the field, it is clear that efforts and developments in this field have been directed toward improving the fit of prostheses to the user's hand, whether attached to the residual stump or resting on the patient's wrist. However, there are evidently significant deficiencies in the devices known within the state of the art, particularly regarding fit to the patient's residual stump, where comfort, ergonomics, simplicity, and practicality are completely absent in any of the currently known developments.

[0014] It is widely recognized that current devices not only cause discomfort to the patient when placed on residual limbs, but also pose a latent risk of causing significant damage, complicating the patient's adaptation to the prosthesis. Additionally, these devices fail to efficiently fit the residual limb, further complicating the adaptation process by presenting problems such as the possibility of easy detachment, unwanted movements, or undesired degrees of freedom, thus limiting the patient's ability to perform voluntary movements and actions.

[0015] This technical issue is extremely relevant, as the user will continue to face difficulties in recovering movement and function of the missing limb if the prosthesis presents difficulties in controlling its movement and / or is not stable once attached to the residual limb. Considering the potential risk of physical damage resulting from these inefficient operating conditions of the device,

[0016] On the other hand, it is essential to highlight that, beyond the lack of comfort in fitting the patient's hand and the residual stump without causing discomfort or displacement, previous art has failed to offer adequate mechanical performance.

[0017] Specifically, known devices do not effectively switch between flexion and extension states in a simple manner, mimicking natural body movement and allowing actions such as lifting objects or exerting force. Furthermore, these devices are not capable of full range of motion, allowing the device to fully extend and flex following the natural movement of the residual limb at the user's discretion, nor do they allow mechanical "locking" to effectively generate force.

[0018] Based on the above, it is clear that to date, no solution has comprehensively addressed the challenges related to drive efficiency, force transmission, and ergonomic fit of prosthetic devices. Therefore, there is a need to provide a prosthetic device capable of adapting simply, practically, and safely to the patient's residual limb, ensuring functional and adequate fixation regardless of the shape and / or size of the patient's residual limb.

[0019] Likewise, there is a need to provide a prosthetic device that, once fitted to the patient, performs flexion-extension movements that aesthetically mimic the natural movement of the phalanges of the human fingers. It is essential that the device, once fitted to the patient, can execute these movements using appropriate drive mechanisms. Additionally, it is important to highlight that it is not only necessary to provide devices that strive for aesthetic similarity, but also that they offer mechanical performance that allows the user to perform everyday actions naturally, such as applying force between the prosthetic device and other surfaces, whether another finger of the user, another prosthetic phalanx, or any other external surface.

[0020] Finally, the inherent need to develop a prosthetic device that guarantees stability and firmness in the aforementioned movements is highlighted. This involves leveraging the natural movement of the patient's residual limb as a support base, which will significantly contribute to the patient's adaptability to the prosthetic device. These proposed conditions will not only promote the recovery of essential and basic functions of the affected body part, but will also provide an advanced and comprehensive solution to the aforementioned challenges in the field of prosthetics.

[0021] Summary of the Invention

[0022] It is therefore an objective of the present invention to provide an orthosis and prosthesis device capable of adapting to any residual phalanx or remaining stump of a patient, regardless of the position of said stump (i.e., said device can adapt to the finger of a patient who has amputated either the distal phalanx or the middle phalanx).

[0023] More particularly, the present invention aims to provide an orthosis and prosthesis device capable of adapting to the remaining stump of a finger of a patient's hand, particularly to the remaining stump of any finger selected from the group comprising the little finger, ring finger, middle finger, index finger and / or the combination of the foregoing, said device comprising a drive system, wherein, relying on the natural movement of said remaining stump of the patient, said drive system is capable of efficiently and advantageously driving the orthosis and prosthesis device to a state of flexion and / or extension, as well as adduction and abduction in a firm, stable manner and, in addition, said drive system is capable of significantly improving the force exerted by the distal prosthetic phalanx.

[0024] Additionally, the present invention aims to provide an orthosis and prosthesis device capable of adapting to the remaining stump of a finger of a patient's hand, particularly to the remaining stump of the patient's thumb, said device comprising a drive system, wherein, relying on the natural movement of said remaining stump of the patient, said drive system is capable of efficiently and advantageously driving the orthosis and prosthesis device to a state of flexion and / or extension, as well as opposition in a firm, stable manner and, furthermore, said drive system is capable of significantly improving the force exerted by the distal prosthetic phalanx.

[0025] Brief Description of the Figures

[0026] Figure 1 illustrates a top front perspective view of a first portion of an orthotic and prosthetic device comprising the drive system according to the present invention, showing the device in an assembled and / or operative state, said orthotic and prosthetic device being in a slightly flexed state.

[0027] Figure 1 a shows a bottom rear perspective view of the orthosis and prosthesis device comprising the drive system of Figure 1 , showing the device in an assembled and / or operative state, said orthosis and prosthesis device being in a slightly flexed state.

[0028] Figure 2 is a top front perspective view of the orthosis and prosthesis device comprising the drive system of Figure 1, showing the device in an assembled and / or operational state, said orthosis and prosthesis device being in a fully extended state.

[0029] Figure 3 is a front view of the orthosis and prosthesis device comprising the drive system of Figure 1, showing the device in an assembled and / or operative state, said orthosis and prosthesis device being in a slightly flexed state.

[0030] Figure 4 illustrates an exploded top front perspective view of the orthotic and prosthetic device comprising the drive system of Figure 1.

[0031] Figure 5 illustrates a top front perspective view of a second portion of an orthosis and prosthesis device comprising the drive system according to the present invention, said second portion corresponding to the support configured to be placed on the patient's hand; in said Figure 5 the fastening bands (31) and the terminal coupler (20) are shown functionally coupled to the dorsal support (30). Figure 6 shows a bottom front perspective view of the orthosis and prosthesis device comprising the drive system of Figure 5.

[0032] Figure 7 is a perspective view of the orthosis and prosthesis device comprising the drive system according to the present invention adapted to a mannequin replicating a human hand, designed to realistically simulate the shape and proportions of a human hand; in said Figure 7 the first portion (of Figure 1) can be seen functionally coupled to the second portion (of Figure 5).

[0033] Figure 8a is a top side perspective view of an example of an embodiment of the orthotic and prosthetic device comprising the drive system according to the present invention, wherein the first portion (of Figure 1) is operatively coupled to the second portion (of Figure 5); in the embodiment example illustrated in Figure 8a, two first portions are shown coupled to a single second portion.

[0034] Figure 8b is a top perspective view of another example of an embodiment of the orthosis and prosthesis device comprising the drive system according to the present invention, where the first portion (of Figure 1 ) is functionally coupled with the second portion (of Figure 5); in the embodiment example illustrated in Figure 8b, two first portions are shown coupled to a single second portion, and particularly, the second portion comprises a dorsal support characterized by comprising four receiving bases (32), each configured to receive a set of prosthetic phalanges; in the example illustrated in said Figure 8b, the dorsal support characterized by comprising four receiving bases (32) is shown connected or functionally coupled with a single set of prosthetic phalanges.

[0035] Figure 9 shows a schematic top perspective view showing, on the one hand, the middle prosthetic phalanx (2), the proximal prosthetic phalanx (3), both corresponding to the first portion of the orthosis and prosthesis device of the present invention, as well as a representation (dotted line) indicating the assembly positions between both elements, as well as with other elements of the drive system according to the present invention.

[0036] Figure 10 is a schematic top perspective view showing the distal prosthetic phalanx (1) corresponding to the first portion of the orthosis and prosthesis device of the present invention and a representation (dotted line) indicating the assembly positions between said phalanx (1) with other elements of the drive system according to the present invention.

[0037] Figure 11 illustrates a top perspective view of the middle (2) and distal (3) prosthetic phalanges, both of the first portion of the orthosis and prosthesis device of the present invention, both phalanges (2, 3) being coupled to each other; likewise, within Figure 11 a connecting bar (10) can be seen connected, on one side, to the lower part of the middle prosthetic phalanx (2), and passing through the proximal prosthetic phalanx (3) through the passage slot (3a) incorporated in said phalanx (3).Figures 12a-12c show front views of the orthosis and prosthesis device comprising the drive system according to the present invention, particularly showing: 12a: drive system according to the present invention urging the orthosis and prosthesis device to switch to a fully extended position; 12b: drive system according to the present invention urging the orthosis and prosthesis device, moving and / or directing it to a flexed position in response to the patient's action of flexing his or her remaining stump; 12c: drive system according to the present invention urging the orthosis and prosthesis device to switch to a fully flexed position.

[0038] Figures 13a-13c illustrate top posterior perspective views of the orthosis and prosthesis device comprising the drive system according to the present invention, said drive system urging the orthosis and prosthesis device into a flexion position, showing the connecting bars (10) of the drive system according to the present invention passing through the proximal prosthetic phalanx (3) through the passage slot (3a), and particularly showing: 13a: the bars (10) in a first position; 13b: the bars (10) in a second position; 13c: the bars (10) in a third position;Figures 13a-13c clearly show how the drive system, thanks to the advantageous solution provided by the applicant, allows the bars (10) to adapt to different positions depending on both the anatomy of the patient, as well as the mechanical or dynamic needs of the activity that the patient is performing.

[0039] Figure 14 is a front perspective view of a further embodiment of the orthosis and prosthesis device comprising the drive system according to the present invention, said orthosis and prosthesis device being configured to be placed on the residual stump of a thumb of a hand of a patient.

[0040] Figure 15 shows an exploded perspective view of the orthosis and prosthesis device comprising the drive system of Figure 14.

[0041] Figure 16 is another perspective view of the orthotic and prosthetic device comprising the drive system of Figure 14.

[0042] Detailed Description of the Invention

[0043] Some aspects of the present invention will now be described in more detail using further reference to the accompanying drawings in which some embodiments and advantages of the present invention are shown.

[0044] It will be apparent to one skilled in the art that various embodiments of the invention may be expressed in different ways and should not be construed as limited to the embodiments described herein; rather, these exemplary embodiments are provided to make this invention clear and complete, and to fully convey the scope of the invention to those skilled in the art. For example, unless otherwise indicated, something described as first, second, or the like should not be construed as implying a particular order. As used in the description and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise.

[0045] The various aspects of the present invention relate to an actuation system configured to be adapted to an exoskeleton-type device for orthoses and prostheses. In particular, said orthosis and prosthesis device is configured to be placed on a remaining stump of a phalanx of the fingers of a patient's hand. Once placed, said orthosis and prosthesis device can switch between both states of flexion and extension, also allowing, without limitation, abduction, adduction, and opposition movements.In order to achieve said switching between both previously mentioned states, the orthosis and prosthesis device comprises the drive system according to the present invention, which, supported by an internal traction assembly together with the movement generated by the metacarpophalangeal joint (MCP), said drive system of the present invention is capable of efficiently transmitting the movement desired by the user, that is, in a stable, firm manner, with adequate force transmission, thereby allowing the patient considerably increased adaptability.

[0046] In general, the drive system according to the present invention comprises an internal traction assembly which, as will be described in greater detail later, said internal traction assembly is configured to transmit the movement to the different prosthetic phalanges of the orthosis and prosthesis device in a solidary and efficient manner, thereby allowing said device to switch between a state of flexion and another of extension, achieving both positions - and the intermediate positions - advantageously emulating the natural movement of the phalanges of the human being.

[0047] The above allows - in addition to improved efficiency in the transmission of movement, a substantial improvement in the use of the prosthetic device, since a patient who uses the device comprising the drive system according to the present invention is able to adapt more simply and easily to the use of the same compared to other prostheses that, due to the fact that they do not respond efficiently to the movement of the remaining stump, said prior art prostheses make it difficult for the user to carry out certain activities, greatly hindering adaptability, even hindering the action of the rest of the fingers derived from the arrangement of the elements necessary for said devices of the state of the art to be able to operate.

[0048] In contrast, the drive system according to the present invention allows for a firm, stable, and efficient transmission, allowing the patient to use it in the same way as they would have used their finger prior to amputation; this implies a notable benefit for the patient to use the prosthetic device comprising the drive system according to the present invention as soon as they have lost their phalanges. This advantageously supports an even better adaptation once the patient places the device on their remaining stump.

[0049] Likewise, an additional advantage of the device according to the present invention is that the orthosis and prosthesis device comprising the drive system is capable of receiving any remaining stump - regardless of size, shape, inflammation, and / or variation over time; the drive system according to the present invention is arranged such that the internal traction assembly can adapt, ensuring the same quality of movement of the prosthetic phalanges regardless of the shape of the remaining stump; the foregoing will become even clearer after a holistic reading of what is described in the present application.

[0050] In a first embodiment of the present invention and as can be seen in Figures 1 to 7, the present invention comprises:

[0051] A) a set of prosthetic phalanges, comprising a distal prosthetic phalanx (1), a middle prosthetic phalanx (2) and a proximal prosthetic phalanx (3); the prosthetic phalanxes according to the present invention are designed in such a way that they simulate the anatomy, aesthetics and functionality of distal and middle phalanges respectively of a human being as seen in Figures 1 to 3 and Figures 9 to 11, 12a to 12c and 13a to 13c.

[0052] In this sense, the distal prosthetic phalanx (1) is pivotally coupled with the middle prosthetic phalanx (2), particularly, connected using suitable coupling means and, supported by end couplers (2a) formed in the middle prosthetic phalanx (2).

[0053] Throughout this application it will be indicated that the different elements and / or components comprising the present invention are coupled to each other or only generally coupled using "suitable coupling means", therefore, in the context of this application, "suitable coupling means" should be understood as any mechanical element used to join, connect or secure components within a structure or device. Said means are any selected from the group comprising bolts, screws, screws, threaded bolts, hexagonal screws, self-tapping screws, combinations thereof and / or other similar elements used for the purpose of securing the fixation between two or more elements.In the context of the present invention, "suitable coupling means" refer to any device or component that allows the secure and stable connection of the parts involved, ensuring the structural and functional integrity of the assembly.

[0054] By way of non-limiting example, as shown in Figure 4, the “coupling means” in said illustrated embodiment are threaded components and therefore, each of the holes of the prosthetic phalanges according to the present invention respectively comprise a receiving thread configured to mechanically interact with the aforementioned threaded components. Furthermore, with continued reference to said Figure 4, the “coupling means” further comprise, according to one embodiment, shafts and / or bars which allow a correct pivotal coupling of intermediate and / or central elements such as the central connector (1 1), a component that will be described in greater detail later in the present application; however, other forms of coupling between said components are used in accordance with alternative embodiments and are not necessarily limited to the referred to and illustrated embodiment.

[0055] As can be seen in the schematic representation of Figure 10, the distal prosthetic phalanx (1 ) is configured to, on the one hand, pivotally couple with the couplers (2a) of the middle prosthetic phalanx (2), and additionally, said distal prosthetic phalanx (1 ) is configured to pivotally couple with a central connector (1 1 ).

[0056] The central connector (11) is one of the components that forms part of an internal traction assembly that characterizes the drive system of the present invention. The manner in which said central connector (11) interacts mechanically and dynamically with the prosthetic phalanges will be described below in accordance with an embodiment of the present invention; later in the present description, said component will be taken up again to describe it from the exclusively dynamic point of view once the entire drive system comprising an internal traction assembly is fully formed in an operational configuration.

[0057] Referring now to Figure 1 a, where a bottom perspective view of the first portion of the prosthetic device of the present invention is observed, the type of coupling between the distal prosthetic phalanx (1) and the central connector (11) can be observed.

[0058] In this embodiment, the central connector (1 1 ) is placed centrically with respect to the width of the distal prosthetic phalanx (1 ).

[0059] Additionally, the middle prosthetic phalanx (2) as can be clearly seen from the representation illustrated in Figure 9, said middle phalanx (2) comprises - as previously mentioned - end couplers (2a) each arranged at a respective end of the middle prosthetic phalanx (2). According to one embodiment, said end couplers (2a) are configured to act as a coupling base by receiving, on the one hand, the distal prosthetic phalanx (1) and, on the opposite end, the proximal prosthetic phalanx (3) (see Figure 1 1, in which the coupling between said middle (2) and proximal (3) prosthetic phalanxes is shown).

[0060] As can be seen in Figure 9, the middle prosthetic phalanx (2) is configured to couple with the proximal prosthetic phalanx (3), particularly, through an end coupler (2a) and a lower bore arranged in the proximal prosthetic phalanx (3).

[0061] On the other hand, in one embodiment, the proximal prosthetic phalanx (3) comprises a bore, arranged above or on top of the bore configured to receive the previously described end coupler (2a); the upper bore of the proximal prosthetic phalanx (3) is configured, according to one embodiment, to pivotally couple with the opposite end of the central connector (11).

[0062] With continued reference to Figure 1 a, and with particular attention to the central connector component (11 ), it has been previously mentioned that one end of said connector (1 1 ) is configured to engage the distal prosthetic phalanx (1 ); thus, the other or opposite end of the connector (1 1 ) is configured, in accordance with an embodiment of the present invention, to pivotally engage the proximal prosthetic phalanx (3).

[0063] Based on the foregoing, once the three prosthetic phalanges (1, 2, 3) and the central connector (1 1) are coupled, said prosthetic phalanges adopt at least two positions relative to each other: a first position, called the extension position as seen in Figure 12a; and a flexion position, as seen in Figure 12c. Additionally, the prosthetic phalanges (1, 2, 3) according to one embodiment of the present invention, are capable of acquiring any intermediate position between the extension and flexion positions; Figure 12b shows, by way of non-limiting example, the prosthetic phalanges (1, 2, 3) according to the present invention, adopting an intermediate or transitional position between both positions.

[0064] In one embodiment, the proximal prosthetic phalanx (3) comprises at least one slot (3a); said slot (3a), also called a passage slot, is configured to allow the passage of a component of the internal traction assembly of the drive system of the present invention; in particular, the slot (3a) is configured to allow the passage of a connecting bar (10) through the body of the proximal phalanx (3).

[0065] The connecting bar (10) is one of the components that forms part of the internal traction assembly that characterizes the drive system of the present invention. The manner in which said bar (10) interacts mechanically and dynamically with the prosthetic phalanges will be described below in accordance with one embodiment of the present invention; later in the present description, said component will be taken up again to describe it from the exclusively dynamic point of view once the entire drive system comprising an internal traction assembly is fully formed in an operational configuration.

[0066] As shown in Figure 3, 9 and 11, according to one embodiment, the connecting bar (10) is configured to pivotally engage, at one end, a bore of the middle prosthetic phalanx (2), said bore being disposed in the lower portion of said phalanx (2) (see Figure 9). Additionally, the connecting bar (10) is configured to connect, at its opposite end, to an end coupler (20). Said end coupler will be described in greater detail later.

[0067] As can be seen from the aforementioned Figures, in one embodiment, the connecting bar (10) passes through the body of the proximal prosthetic phalanx (3); to do so, the connecting bar (10) passes through the groove (3a) of the proximal phalanx (3). In one embodiment, said groove (3a) is a continuous rectangular groove, as shown in the aforementioned Figures. The width of said groove (3a) ranges from 1 mm to 5 mm, and has a depth ranging from 2 mm to 8 mm.

[0068] In one embodiment, the groove (3a) of the proximal prosthetic phalanx (3) is arranged in the anterior portion of said phalanx (3) as seen in Figure 2 and Figure 9.

[0069] In one embodiment, the groove (3a) of the proximal prosthetic phalanx (3) is two grooves, arranged at each lateral end of the proximal phalanx (3), as seen in Figure 2.

[0070] Based on the above, the applicant has found that, advantageously, the configuration of the internal traction assembly, which will be described in greater detail later in this document, allows the movement transmitted by the patient's remaining stump to the prosthesis to be more stable, firmer and with a higher force transmission rate.The above is derived from the fact that, in the previously described modality, since the connecting bars (10) are contained in the grooves (3a) of the proximal prosthetic phalanx (3), the movement of said connecting bars (10) are limited in their entirety to a unidirectional displacement; with this, independently of the shape of the remaining stump of the patient and / or the way in which the patient is moving his stump, the connecting bar (10) will advantageously continue transmitting the movement towards the prosthetic phalanges, completely annulling all movement towards the outside of the proximal prosthetic phalanx (3).

[0071] Furthermore, the applicant has discovered that, by using a continuous slot, as shown in Figure 2, said bar (10) is capable of adopting different positions depending on the morphology of the remaining stump and, in general, of the patient's hand. As can be seen in Figures 13a to 13c, the connecting bar (10) adopts a minor inclination (Figure 13a), a major inclination (Figure 13c) or an intermediate inclination (Figure 13b) - any position between the minor inclination (13a) and the major inclination (Figure 13c) - which, advantageously, allows it to adapt and, thereby, generally adapt the internal traction assembly and the drive system of the present invention, to generally adapt to any remaining stump of a patient, regardless of the size, shape, dimension of the patient's hand, and / or form of movement of the remaining stump and / or the metacarpophalangeal joint of the patient.

[0072] That said, a person with knowledge in the field to which the invention belongs will understand, based on what has been previously described, that the passage slots (3a) arranged in the proximal prosthetic phalanges (3) according to an embodiment of the present invention are a highly relevant feature, and that their incorporation, together with the configuration, interaction and coupling of each of the components of the internal traction assembly of the drive system of the present invention provide an improved shape, with a totally advantageous and superior effect, thereby offering an adequate transmission of the movement generated by the patient towards the prosthetic phalanges (1, 2, 3), thereby achieving, regardless of the position of the prosthetic phalanges and / or other components of the device of the present invention,This drive system is capable of adopting different positions in order to ensure the transmission of movement to the prosthetic phalanges at all times.

[0073] In one embodiment, the prosthetic phalanges are manufactured with a thickness ranging from 2 mm to 20 mm, are manufactured by any appropriate production method, and are manufactured from any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.

[0074] By "any appropriate production method" is meant any currently known manufacturing method, procedure or process that allows the components of the present invention to be formed as described, such as plastic injection, thermoforming, rotoforming, blow molding, 3D printing, molding, combination thereof, among others.

[0075] In a preferred embodiment, the prosthetic phalanges (1, 2, 3) are made of the same material; in an optional embodiment, each prosthetic phalanx is made of a different material, said material being any selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.

[0076] In one embodiment, the distal prosthetic phalanx (1 ) comprises a traction surface arranged on the lower front part of said phalanx (1 ); said traction surface is made of a flexible and non-slip material, it is capable of elastically deforming when it comes into contact with a certain object so that the patient can hold, take or grab irregular objects with greater precision and firmness when said patient uses the device of the present invention. The traction surface is designed to resemble or be analogous to the area of ​​the ball of a human finger, allowing objects to be grasped when a force is applied to it.

[0077] By "a flexible and non-slip material" shall be understood any appropriate material that can be elastically deformed, that is, that is capable of returning to its original form when the interaction of said component with the object in question is concluded and, in addition, said material can hold firmly and comfortably any object regardless of its shape; such materials can be and are not limited to silicones such as conductive silicone, silicone with a mixture of carbon black, among others, rubbers, EVA rubber, rubber, silicone, polyethylene, texovinyl, nitrile, neoprene, latex, PVC and / or any combination thereof.In an additional embodiment, the traction surface of the distal prosthetic phalanx (1) is made of any of the previously mentioned materials, in order to obtain the aforementioned characteristics, it is also made of a material compatible with touch devices, "touch" or capacitive devices such as smart phones, tablets, smart watches, touch screens, among others.

[0078] By “a material compatible with touch devices” should be understood any appropriate material that, when coming into contact with the interface, normally a screen of a touch device or “touch”, said touch device can recognize the gestures, movements and in general any interaction carried out by the user of the system of the present invention; such materials can be any of the selected group comprising silicones such as conductive silicone, silicone with a mixture of carbon black, among others, rubbers, EVA rubber, rubber, silicone, polyethylene, texovinyl, nitrile, neoprene, latex, nylon, PVC and / or any combination thereof.

[0079] B) an internal traction assembly; which is configured to, as mentioned throughout this application, efficiently, firmly, stably and with a high and advantageous rate of transmission of force and mechanical energy, conduct the movement caused by the patient's remaining stump towards the prosthetic phalanges (1, 2, 3) of the present invention.

[0080] The internal traction assembly, according to an embodiment of the present invention, comprises: i) the central connector (1 1), which, as previously described, is connected at one end to the distal prosthetic phalanx (1 ) and, at the other end, is connected to the proximal prosthetic phalanx (3);

[0081] (i) the connecting bars (10), which, as previously described, are connected at one end to the lower portion of the middle prosthetic phalanx (2) and, at the other end, are connected to an end coupler (20); said end coupler (20) will be explained in greater detail below; and (iii) a dorsal support (30) configured to be placed on the dorsal part of the patient's hand and firmly fastened to the patient's wrist by means of fastening bands (31).

[0082] In one embodiment, the central connector (11) is made of the same material as the prosthetic phalanges (1,2,3); in an optional embodiment, the central connector (11) is made of a different material than the prosthetic phalanges and therefore, said connector (11) is made of any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.In one embodiment, the central connector (1 1 ) comprises a cross-section with a shape selected from the group comprising square, rectangle, circle, oval, regular and / or irregular polygon, combinations thereof and / or similar; likewise, in one embodiment, the central connector (1 1 ) comprises a thickness in a range from 1 mm to 10 mm. The length of said central connector (11 ) is directly dependent on the size of the prosthetic phalanges, however, according to one embodiment, said connector (1 1 ) comprises a length in a range from 2 cm to 10 cm and a width in a range from 5 mm to 30 mm.

[0083] In a preferred embodiment, said central connector (11) is at least one connector or a single piece, as shown in Figure 1 a; in an optional embodiment, the central connector (11) is at least two and up to “n” number of bars that connect the distal (1) and proximal (3) prosthetic phalanges as referred to throughout this document and without necessarily being limited to the shape, geometry and arrangement illustrated.

[0084] In the preferred embodiment, the central connector (1 1 ) is arranged centrally with respect to the width of the distal prosthetic phalanx (1 ), in order to allow efficient transmission of movement, thereby favoring uniform and firm transmission of movement; in an optional embodiment, the central connector (1 1 ) is arranged in a position other than the center of the distal phalanx (1 ).

[0085] On the other hand, with reference now to the connecting bars (10), in a preferred embodiment, as previously discussed in this document, the internal traction assembly comprises at least two bars, each arranged at a lateral end and each passing through its respective slot (3a) of the proximal prosthetic phalanx (3). In an optional embodiment, the internal traction assembly comprises at least one connecting bar (10), coupled at a single lateral end and passing through only one slot (3a) of the proximal prosthetic phalanx (3).

[0086] In one embodiment, the connecting bar (10) is made of a crucial material to ensure adequate performance in terms of strength and durability, made of materials that can withstand tensile loads and resist deformations without compromising structural integrity.

[0087] In this context, carbon steel is a standard option, offering a balanced combination of strength and toughness. Variants such as high-strength steel (HSLA) provide enhanced properties, which can be beneficial depending on the specific application requirements.

[0088] Stainless steel is another commonly used option, notable for its corrosion resistance. Alloys such as austenitic stainless steel (e.g., 304, 316) are known for their durability in humid or corrosive environments.

[0089] For applications where weight reduction is critical, aluminum alloys are a viable choice. Although not as strong as some steels, they offer an excellent strength-to-weight ratio. In situations demanding high strength and significant weight reduction, titanium may be the appropriate choice.

[0090] In extreme environments or at high temperatures, nickel alloys, such as Inconel, are preferred due to their corrosion resistance and high-temperature properties. Additionally, steel alloys, such as chromoly (chromium-molybdenum), are common in high-performance applications, providing superior strength compared to conventional steels.

[0091] The choice of material for the connecting bar (10) will therefore depend on specific considerations, however, in summary, said connecting bar (10) is made of any material selected from the group comprising carbon steel, high strength steel, stainless steel, alloys such as austenic stainless steel, aluminum, alloys, titanium, nickel alloys, combinations thereof and / or the like; in one embodiment, said connecting bar (10) is made of any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, copolymers, and / or any suitable material, combinations thereof and / or the like.

[0092] Likewise, according to one embodiment, the connecting bar (10) is manufactured with a thickness in a range from 0.5 mm to 15 mm, with a cross-section selected from the group comprising square, rectangle, circle, oval, regular and irregular polygons, combinations thereof and / or similar, furthermore, the connecting bar (10) according to one embodiment, is manufactured with a width in a range from 3 mm to 15 mm; with respect to the length, the connecting bar (10) has a length that is directly dependent on the size of the prosthetic phalanges, however, according to one embodiment, said bar (10) comprises a length in a range from 2 cm to 15 cm.

[0093] With reference now to the component called terminal coupler (20), as previously mentioned in the present application, the connecting bars (10) are configured to be coupled at one end to said terminal coupler (20); with reference to Figure 2 and 3, the coupling between said bars (10) and the terminal coupler (20) is clearly observed.

[0094] In one embodiment, the coupling between the bars (10) and the terminal coupler (20) is a pivotal coupling. In one embodiment, the terminal coupler (20) is made of the same material as the prosthetic phalanges; in one embodiment, the terminal coupler (20) is made of a different material than the prosthetic phalanges (1, 2, 3), and therefore, said coupler (20) is made of any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.As can be seen in Figures 2 and 3 previously referred to, or in Figure 4, the terminal coupler (20) comprises an irregular geometry, showing lower flanges configured to receive the ends of the connecting bars (10). Likewise, in one embodiment, said coupler (20) comprises a central bore, configured to couple with a base (32) arranged in the dorsal support (30), which will be explained in greater detail later in this application.

[0095] It is worth mentioning that said terminal coupler (20) is not necessarily limited to the shape and geometry illustrated in the attached Figures; said terminal coupler (20) comprises, in additional embodiments, other geometries and dimensions different from those illustrated, conserving only the set of lower holes - configured to receive the ends of the connecting bars (10) - and the central hole - configured to couple with a base (32) arranged in the dorsal support (30) in one embodiment, said coupler (20) has a thickness in a range that goes from 1 mm to 15 mm.

[0096] With reference to the manner of coupling between said terminal coupler (20) and the dorsal support (30), reference is now made to Figure 5. In said Figure 5, the terminal coupler (20) is shown pivotally coupled to the dorsal support (30). More specifically, according to one embodiment of the present invention, the terminal coupler (20) is supported on a receiving base (32); said receiving base (32) comprises a bore configured to concentrically coincide with the centric bore of the terminal coupler (20) and, by means of a “coupling means”, the pivotal connection between both coupler (20) and the dorsal support (30) is ensured.

[0097] Reiteratively, by way of non-limiting example, as shown in Figure 5, the "coupling means" in said illustrated embodiment are snap-fit ​​components, such as, for example, a snap bolt and therefore, each of the holes in both the terminal coupler (20) and the receiving base (32) of the dorsal support (30) according to the present invention comprise through holes that allow the free passage of the referred coupling means, however, other forms of coupling between said components are used in accordance with alternative embodiments and are not necessarily limited to the referred and illustrated embodiment.

[0098] In one embodiment, the dorsal support (30) comprises at least one receptor base (32). In one embodiment, the dorsal support (30) comprises two receptor bases (32) as illustrated in Figures 5 and 6. Each receptor base (32) is configured to receive and operatively couple with an end coupler (20) and, as described throughout the present application, each end coupler (20) is capable of coupling and interacting with a set of prosthetic phalanges (1, 2, 3).

[0099] Therefore, in one embodiment, the dorsal support (30) comprises at least one receptor base (32) and is configured to interact with at least one set of prosthetic phalanges (1, 2, 3), as seen in Figure 7. In one embodiment, the dorsal support (30) comprises at least two receptor bases (32) and is configured to interact with at least two sets of prosthetic phalanges, as seen in Figure 8.

[0100] In one embodiment, the dorsal support (30) comprises at least two and up to four receptor bases (32) and, therefore, said dorsal support (30) is configured to interact with at least two and up to four sets of prosthetic phalanges (1, 2, 3).

[0101] Based on the foregoing, a person with ordinary knowledge in the matter will understand that the dorsal support (30) is capable of having sufficient receptor bases (32) - maximum four - to comprise as many sets of prosthetic phalanges (1, 2, 3) to supply the four fingers of a patient, that is, the little finger, ring finger, middle and index finger. In one embodiment, the dorsal support (30) is capable of having at least one receptor base (32) to comprise at least one set of prosthetic phalanges (1, 2, 3) to supply at least one of the four fingers of a patient, that is, the little finger, ring finger, middle and index finger, and in this embodiment, said receptor base (32) is arranged in any position along the dorsal support (30) coinciding with the patient's finger that needs to be supplied and, is not necessarily limited to the position illustrated in the reference Figures.

[0102] In one embodiment, the dorsal support (30) is manufactured from the same material as the prosthetic phalanges; in another embodiment, the dorsal support (30) is manufactured from a different material than the prosthetic phalanges (1, 2, 3), and therefore, said dorsal support (30) is manufactured from any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material. In one embodiment, the dorsal support (30) has a thickness in a range from 1 mm to 15 mm.

[0103] In one embodiment, the dorsal support (30) comprises an ergonomic geometry, suitable for coupling to the dorsal portion of the patient's hand; it is important to mention that the dorsal support (30) as illustrated in the referenced Figures, is not limited to the geometry shown, and therefore, the dorsal support (30) comprises any combination of shapes, such as and not limited to rectangles, squares, circles, ovals, regular and irregular polygons, combinations thereof and / or similar, with a certain curvature and / or with no curvature, the foregoing, without departing from the essence, scope and spirit of the present invention.

[0104] In the illustrated embodiment, the dorsal support (30) comprises a curved geometry, which efficiently and ergonomically adapts to the dorsal portion of the patient's hand; also, said support (30) comprises a dimension such that it can adapt to an average size of a patient's hand, however, said dorsal support (30) may comprise other curvatures and dimensions in order to adapt to the shape and size of the patient's hand without departing from the teachings of the present invention. In one embodiment, said dorsal support (30) is sufficiently ductile to be molded into a comfortable shape for the patient's hand, carrying out this deformation without compromising the functionality of the component and / or the system in general.

[0105] In one embodiment, the dorsal support (30) comprises at least two receivers (30a) configured to respectively receive and couple the fastening bands (31).

[0106] In the context of this application, "fastening bands" are flexible and adjustable elements used to secure, fix, or hold various objects or components in place. These bands are commonly designed with materials that allow them to stretch and adjust, thus providing a firm hold. A classic example of these bands are Velcro straps, which consist of two parts: one with small hooks and the other with loops, allowing for a secure and removable connection. Furthermore, the stretchable bands found on watches are also considered within this category, as their elasticity makes it easier to adapt to the contours of the wrist.

[0107] Other types of straps include the adjustable straps found on backpacks, belts, and bags, which serve the purpose of securing and adjusting the item to the body or a specific structure. Likewise, the elastic bands used in sports to hold various objects in place, such as knee pads or bandages, also fall into this classification. In summary, straps encompass a variety of flexible and adjustable elements, such as Velcro straps, stretchable watch straps, backpack straps, and elastic sports bands, all designed to effectively secure and hold objects in place.

[0108] In a preferred embodiment, the fastening bands (31) are bands or stretchers used in wristwatches, as seen in Figures 5 and 6. However, a person with ordinary knowledge in the field will understand that the present invention is not limited to this type of fastening means and that any other element designed for the purpose of fastening such as the wristwatch stretcher is applicable to the invention described in the present application, and therefore, a variation of the component "fastening band (31)" does not necessarily depart from the teachings, scope and spirit of the present application.

[0109] As previously mentioned, the support band (31) is configured to be fastened to the patient's wrist, similar to how the patient would wear a wristwatch or bracelet. This enables the patient to efficiently and securely secure the position of the back support (30).

[0110] Additionally, the receivers (30a) of the fastening bands (31) have a geometry and size directly related to the shape of the fastening band (31); in the embodiment illustrated in Figure 5 or 6, it is observed that the receivers (30a) are specially configured to receive the fastening bands (31) used in this illustrated embodiment; however, said receivers (30a) or receiving slot (30a) may vary in size or shape from the one illustrated without departing from the essence, spirit and scope of the present invention. As has been observed, after a holistic reading of the present description, it is notorious that the drive system according to the present invention, thanks to the interaction between each of the elements comprising the internal traction assembly, allows the transfer of the movement driven by the user - through the metacarpophalangeal joint, towards the distal and middle prosthetic phalanges.

[0111] In this sense, it is important to mention that the distal, middle and proximal prosthetic phalanges (1, 2, 3) comprise any dimension and shape and are not necessarily limited to the shapes and measurements illustrated in the attached Figures. On the contrary, a person with knowledge in the field to which the present invention belongs will understand that regardless of the shapes and measurements of the prosthetic phalanges, the drive system of the present invention is capable of adapting to them and achieving mechanical conduction and transfer and thereby, causing the switching of the positions of the prosthetic phalanges as described throughout the present application.

[0112] In one embodiment, in order for the prosthetic proximal phalanx (3) to be able to adapt to the shape of any remaining stump, the body of said phalanx (3) is not a continuous solid structure; more specifically, the body of said proximal phalanx (3), according to an optional embodiment, comprises a space, which is configured to open and separate or close and join together depending on the size of the user's remaining stump.

[0113] Furthermore, according to a second embodiment, the drive system according to the present invention, as previously mentioned, is capable of being used and adapted to other types of orthotic and prosthetic devices. In the second embodiment, which will be described below, the orthotic and prosthetic device comprising a drive system according to the present invention will be used to replace or mimic the appearance and functionality of a patient's thumb.

[0114] It is worth mentioning that what is described below includes similar reference numbers with respect to the first embodiment, so that it should be understood that said similar reference numbers refer to elements analogous to those of the drive system according to the first embodiment, and on the other hand, those reference numbers repeated in both embodiments refer to elements that do not undergo changes or that are the same for both embodiments.

[0115] In said second embodiment, as can be seen in Figure 14, the present invention comprises:

[0116] A) a set of prosthetic phalanges, comprising a distal prosthetic phalanx (1') and a proximal prosthetic phalanx (3'); the prosthetic phalanxes according to the present invention are designed in such a way that they simulate the anatomy, aesthetics and functionality of distal and middle phalanxes of a human being, respectively. In this sense, the distal prosthetic phalanx (1') is pivotally coupled to the proximal prosthetic phalanx (3'), in particular, connected using suitable coupling means.

[0117] Throughout this application it will be indicated that the different elements and / or components comprising the present invention are coupled to each other or only generally coupled using "suitable coupling means", therefore, in the context of this application, "suitable coupling means" should be understood as any mechanical element used to join, connect or secure components within a structure or device. Said means are any selected from the group comprising bolts, screws, screws, threaded bolts, hexagonal screws, self-tapping screws, combinations thereof and / or other similar elements used for the purpose of securing the fixation between two or more elements.In the context of the present invention, "suitable coupling means" refer to any device or component that allows the secure and stable connection of the parts involved, ensuring the structural and functional integrity of the assembly.

[0118] As can be seen in the schematic representation of Figure 14, the distal prosthetic phalanx (T) is configured to, on the one hand, pivotally couple with the proximal prosthetic phalanx (3'), and additionally, said distal prosthetic phalanx (T) and proximal (3') are configured to pivotally couple with a central connector (11').

[0119] The central connector (1 T) is one of the components that forms part of an internal traction assembly that characterizes the drive system of the present invention. The manner in which said central connector (11 ') interacts mechanically and dynamically with the prosthetic phalanges will be described below in accordance with an embodiment of the present invention; later in the present description, said component will be taken up again to describe it from the exclusively dynamic point of view once the entire drive system comprising an internal traction assembly is fully formed in an operational configuration.

[0120] Referring now to Figure 14, the type of coupling between the distal (1') and proximal (3') prosthetic phalanx and the central connector (11') can be observed.

[0121] In this modality, the central connector (1 T) is placed centrically with respect to the width of the distal prosthetic phalanx (1 ').

[0122] Additionally, the distal prosthetic phalanx (T) as can be clearly seen from the representation illustrated in Figure 14, comprises - a bore for coupling, on the one hand, with the proximal prosthetic phalanx (3') and, on the other hand, with a connecting bar (10').

[0123] With continued reference to Figure 14, and with particular attention to the central connector component (1 1 '), it has been previously mentioned that one end of said connector (1 1 ) is configured to engage the distal prosthetic phalanx (1 '); in the illustrated embodiment, said connector (1 T) connects to the connector bar (10) and said connector bar (10') connects to the distal prosthetic phalanx (T). Based on the foregoing, once the two prosthetic phalanges (1 ', 3'), the connector bar (10') and the central connector (11 ') are coupled, said prosthetic phalanges adopt at least two positions relative to each other: a first position, called the extension position; and a flexion position. Additionally, the prosthetic phalanges (1 ', 3') according to one embodiment of the present invention, are capable of acquiring any intermediate or transitional position between the extension and flexion positions.

[0124] In one embodiment, the proximal prosthetic phalanx (3') comprises at least one groove (3a'); said groove (3a'), also called a passage groove, is configured to allow the passage of a component of the internal traction assembly of the drive system of the present invention; in particular, the groove (3a') is configured to allow the passage of a connecting bar (1 O') through the body of the proximal phalanx (3').

[0125] The connecting bar (10') is one of the components that forms part of the internal traction assembly that characterizes the drive system of the present invention. The manner in which said bar (10') interacts mechanically and dynamically with the prosthetic phalanges will be described below in accordance with one embodiment of the present invention; later in the present description, said component will be taken up again to describe it from the exclusively dynamic point of view once the entire drive system comprising an internal traction assembly is fully formed in an operational configuration.

[0126] As shown in Figure 14, according to one embodiment, the connecting bar (10') is configured to pivotally engage, at one end, a bore of the distal prosthetic phalanx (T), said bore being disposed in the lower portion of said phalanx (T). Additionally, the connecting bar (10') is configured to connect, at its opposite end, to the central connector (11').

[0127] As can be seen from the previously mentioned Figure, in one embodiment, the connecting bar (10') passes through the body of the proximal prosthetic phalanx (3'); to carry out the above, the connecting bar (10') passes through the slot (3a') of the proximal phalanx (3').

[0128] In one embodiment, said groove (3a') is a continuous rectangular groove, as shown in the referenced Figures. The width of said groove (3a') is in a range from 1 mm to 5 mm, and has a depth in a range from 2 mm to 8 mm.

[0129] In one embodiment, the groove (3a') of the proximal prosthetic phalanx (3') is arranged in the anterior portion of said phalanx (3') as seen in Figure 14.

[0130] In one embodiment, the groove (3a') of the proximal prosthetic phalanx (3') is two grooves, arranged at each lateral end of the proximal phalanx (3'), as seen in Figure 14.

[0131] Based on the above, the applicant has found that, advantageously, the configuration of the internal traction assembly, which will be described in greater detail later in this document, allows the movement transmitted by the patient's remaining stump to the prosthesis to be more stable, firmer and with a higher force transmission rate.The above is derived from the fact that, in the previously described modality, since the connecting bars (10') are contained in the grooves (3a') of the proximal prosthetic phalanx (3'), the movement of said connecting bars (10') are limited in their entirety to a unidirectional displacement; with this, independently of the shape of the remaining stump of the patient and / or the way in which the patient is moving his stump, the connecting bar (10') will advantageously continue transmitting the movement towards the prosthetic phalanges, completely annulling all movement towards the outside of the proximal prosthetic phalanx (3').

[0132] Likewise, the applicant has discovered that, with the use of a continuous slot, said bar (10') is capable of adopting different positions depending on the morphology of the remaining stump and, in general, of the patient's hand, which, advantageously, allows it to adapt and, therefore, generally adapt to the internal traction assembly and the drive system of the present invention, to adapt in a generalized manner to any remaining stump of a patient, regardless of the size, shape, dimension of the patient's hand, and / or form of movement of the remaining stump and / or the metacarpophalangeal joint of the patient.

[0133] That said, a person with knowledge in the field to which the invention belongs will understand, based on what has been previously described, that the passage slots (3a') arranged in the proximal prosthetic phalanges (3') according to an embodiment of the present invention are a highly relevant feature, and that their incorporation, together with the configuration, interaction and coupling of each of the components of the internal traction assembly of the drive system of the present invention provide an improved shape, with a totally advantageous and superior effect, thereby offering an adequate transmission of the movement generated by the patient towards the prosthetic phalanges (1', 3'), thereby achieving, regardless of the position of the prosthetic phalanges and / or other components of the device of the present invention,This drive system is capable of adopting different positions in order to ensure the transmission of movement to the prosthetic phalanges at all times.

[0134] In one embodiment, the prosthetic phalanges are manufactured with a thickness ranging from 2 mm to 20 mm, are manufactured by any appropriate production method, and are manufactured from any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.

[0135] By "any appropriate production method" is meant any currently known manufacturing method, procedure or process that allows the components of the present invention to be formed as described, such as plastic injection, thermoforming, rotoforming, blow molding, 3D printing, molding, combination thereof, among others.

[0136] In a preferred embodiment, the prosthetic phalanges (1', 3') are made of the same material; in an optional embodiment, each prosthetic phalanx is made of a different material, said material being any selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.

[0137] In one embodiment, the distal prosthetic phalanx (1') comprises a traction surface arranged on the lower front part of said phalanx (1'); said traction surface is made of a flexible and non-slip material, and is capable of elastically deforming when it comes into contact with a certain object so that the patient can hold, grasp or grip irregular objects with greater precision and firmness when said patient uses the device of the present invention. The traction surface is designed to resemble or be analogous to the area of ​​the ball of a human finger, allowing objects to be grasped when a force is applied thereto.

[0138] By "a flexible and non-slip material" shall be understood any appropriate material that can be elastically deformed, that is, that is capable of returning to its original form when the interaction of said component with the object in question is concluded and, in addition, said material can hold firmly and comfortably any object regardless of its shape; such materials can be and are not limited to silicones such as conductive silicone, silicone with a mixture of carbon black, among others, rubbers, EVA rubber, rubber, silicone, polyethylene, texovinyl, nitrile, neoprene, latex, PVC and / or any combination thereof.

[0139] In an additional embodiment, the traction surface of the distal prosthetic phalanx (1') is made of any of the previously mentioned materials, in order to obtain the aforementioned characteristics, it is also made of a material compatible with touch devices, "touch" or capacitive devices such as smartphones, tablets, smart watches, touch screens, among others.

[0140] By “a material compatible with touch devices” should be understood any appropriate material that, when coming into contact with the interface, normally a screen of a touch device or “touch”, said touch device can recognize the gestures, movements and in general any interaction carried out by the user of the system of the present invention; such materials can be any of the selected group comprising silicones such as conductive silicone, silicone with a mixture of carbon black, among others, rubbers, EVA rubber, rubber, silicone, polyethylene, texovinyl, nitrile, neoprene, latex, nylon, PVC and / or any combination thereof.B) an internal traction assembly; which is configured to, as mentioned throughout this application, efficiently, firmly, stably, and with a high and advantageous rate of transmission of force and mechanical energy, conduct the movement caused by the patient's remaining stump towards the prosthetic phalanges (1', 3') of the present invention.

[0141] The internal traction assembly, according to an embodiment of the present invention, comprises: i) the central connector (11'), which, as previously described, is connected at one end to the connecting bar (10') and said connecting bar is coupled to the distal prosthetic phalanx (1') and, at the other end, the central connector (11') is connected to the proximal prosthetic phalanx (3'); and

[0142] (i) a dorsal support (30') configured to be placed on the dorsal part of the patient's hand and (of the patient) by means of fastening bands (31'). firmly attached to the patient's wrist.

[0143] In one embodiment, the central connector (11') is made of the same material as the prosthetic phalanges (1', 3'); in an optional embodiment, the central connector (11') is made of a different material than the prosthetic phalanges and therefore, said connector (11') is made of any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.

[0144] In one embodiment, the central connector (1 1 ') comprises a cross-section with a shape selected from the group comprising square, rectangle, circle, oval, regular and / or irregular polygon, combinations thereof and / or similar; also, in one embodiment, the central connector (1 1 ') comprises a thickness in a range from 1 mm to 10 mm. The length of said central connector (11 ') is directly dependent on the size of the prosthetic phalanges, however, according to one embodiment, said connector (1 1 ') comprises a length in a range from 2 cm to 10 cm and a width in a range from 5 mm to 30 mm.

[0145] In a preferred embodiment, said central connector (11') is at least one connector or a single piece, as shown in Figure 14; in an optional embodiment, the central connector (11') is at least two and up to “n” number of bars without necessarily being limited to the shape, geometry and arrangement illustrated.

[0146] In the preferred embodiment, the central connector (1 1 ') is arranged centrally with respect to the width of the distal prosthetic phalanx (1 '), this in order to allow an efficient transmission of movement, thereby favoring a transmission of movement in a uniform and firm manner; in an optional embodiment, the central connector (1 1 ') is arranged in a different position than the center of the distal phalanx (1 '). On the other hand, with reference now to the connecting bars (10'), in a preferred embodiment, as previously discussed in this document, the internal traction assembly comprises at least two bars, each arranged at a lateral end and each passing through its respective slot (3a') of the proximal prosthetic phalanx (3').In an optional embodiment, the internal traction assembly comprises at least one connecting bar (10'), coupled at a single lateral end and passing through only one slot (3a') of the proximal prosthetic phalanx (3').

[0147] In one embodiment, the connecting bar (10') is made of a crucial material to ensure adequate performance in terms of strength and durability, made of materials that can withstand tensile loads and resist deformations without compromising structural integrity.

[0148] In this context, carbon steel is a standard option, offering a balanced combination of strength and toughness. Variants such as high-strength steel (HSLA) provide enhanced properties, which can be beneficial depending on the specific application requirements.

[0149] Stainless steel is another commonly used option, notable for its corrosion resistance. Alloys such as austenitic stainless steel (e.g., 304, 316) are known for their durability in humid or corrosive environments.

[0150] For applications where weight reduction is critical, aluminum alloys are a viable choice. Although not as strong as some steels, they offer an excellent strength-to-weight ratio. In situations demanding high strength and significant weight reduction, titanium may be the appropriate choice.

[0151] In extreme environments or at high temperatures, nickel alloys, such as Inconel, are preferred due to their corrosion resistance and high-temperature properties. Additionally, steel alloys, such as chromoly (chromium-molybdenum), are common in high-performance applications, providing superior strength compared to conventional steels.

[0152] The choice of material for the connecting bar (10') will therefore depend on specific considerations, however, in summary, said connecting bar (10') is manufactured from any material selected from the group comprising carbon steel, high strength steel, stainless steel, alloys such as austenic stainless steel, aluminum, alloys, titanium, nickel alloys, combinations thereof and / or the like; in one embodiment, said connecting bar (10') is manufactured from any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, copolymers, and / or any suitable material, combinations thereof and / or the like.

[0153] Likewise, according to one embodiment, the connecting bar (10') is manufactured with a thickness in a range from 0.5 mm to 15 mm, with a cross-section selected from the group comprising square, rectangle, circle, oval, regular and irregular polygons, combinations thereof and / or similar, furthermore, the connecting bar (10') according to one embodiment, is manufactured with a width in a range from 3 mm to 15 mm; with respect to the length, the connecting bar (10') has a length that is directly dependent on the size of the prosthetic phalanges, however, according to one embodiment, said bar (10) comprises a length in a range from 2 cm to 15 cm.

[0154] In one embodiment, the coupling between the central connector (1 1') and the dorsal support (30') is direct, and is a pivoting coupling.

[0155] With reference to the coupling method between said central connector (11') and the dorsal support (30'), said coupling is carried out in a pivoting manner. More specifically, according to one embodiment of the present invention, the end of the central connector (11') is supported in the center of the dorsal support (30'), which comprises a bore configured to concentrically coincide with the central bore of the end of the central connector (11') and, by means of a "coupling means", the pivoting connection between both components is ensured.

[0156] Reiteratively, by way of non-limiting example, the “coupling means” in said illustrated embodiment are snap-fit ​​components, such as, for example, a snap bolt and therefore, each of the holes in both the central connector (1 T) and the dorsal support (30') according to the present invention comprise through holes that allow the free passage of the referred coupling means, however, other forms of coupling between said components are used according to alternative embodiments and are not necessarily limited to the referred and illustrated embodiment.

[0157] In one embodiment, the dorsal support (30') is configured to receive and functionally couple with a central connector (11') and, as described throughout this application, each central connector (11') is capable of coupling and interacting with a set of prosthetic phalanges (1',3').

[0158] In one embodiment, the dorsal support (30') is manufactured from the same material as the prosthetic phalanges; in another embodiment, the dorsal support (30') is manufactured from a different material than the prosthetic phalanges (1', 3'), and therefore, said dorsal support (30') is manufactured from any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material. In one embodiment, the dorsal support (30') has a thickness in a range from 1 mm to 15 mm.

[0159] In one embodiment, the dorsal support (30') comprises an ergonomic geometry, suitable for coupling to the dorsal portion of the patient's hand; it is important to mention that the dorsal support (30') as illustrated in the referenced Figures, is not limited to the geometry shown, and therefore, the dorsal support (30') comprises any combination of shapes, such as and not limited to rectangles, squares, circles, ovals, regular and irregular polygons, combinations thereof and / or similar, with a certain curvature and / or with no curvature, the foregoing, without departing from the essence, scope and spirit of the present invention.

[0160] In the illustrated embodiment, the dorsal support (30') comprises a curved geometry, which adapts efficiently and ergonomically to the dorsal portion of the patient's hand; likewise, said support (30') comprises a dimension such that it can adapt to an average size of a patient's hand, however, said dorsal support (30') can comprise other curvatures and dimensions in order to adapt to the shape and size of the patient's hand without departing from the teachings of the present invention.

[0161] In one embodiment, said dorsal support (30') is sufficiently ductile to be molded into a shape comfortable for the patient's hand, carrying out this deformation without compromising the functionality of the component and / or the system in general.

[0162] In one embodiment, the dorsal support (30') comprises at least two receivers configured to respectively receive and couple the fastening bands (31').

[0163] In the context of this application, "fastening bands" are flexible and adjustable elements used to secure, fix, or hold various objects or components in place. These bands are commonly designed with materials that allow them to stretch and adjust, thus providing a firm hold. A classic example of these bands are Velcro straps, which consist of two parts: one with small hooks and the other with loops, allowing for a secure and removable connection. Furthermore, the stretchable bands found on watches are also considered within this category, as their elasticity makes it easier to adapt to the contours of the wrist.

[0164] Other types of straps include the adjustable straps found on backpacks, belts, and bags, which serve the purpose of securing and adjusting the item to the body or a specific structure. Likewise, the elastic bands used in sports to hold various objects in place, such as knee pads or bandages, also fall into this classification. In summary, straps encompass a variety of flexible and adjustable elements, such as Velcro straps, stretchable watch straps, backpack straps, and elastic sports bands, all designed to effectively secure and hold objects in place.

[0165] In a preferred embodiment, the fastening bands (31 ') are bands or stretchers used in wristwatches, as seen in the aforementioned Figure 14. However, a person with ordinary knowledge in the field will understand that the present invention is not limited to this type of fastening means and that any other element designed for the purpose of fastening such as the wristwatch stretcher is applicable to the invention described in the present application, and therefore, a variation of the component "fastening band (31 ') does not necessarily depart from the teachings, scope and spirit of the present application. As previously mentioned, the fastening band (31 ') is configured to be fastened to the patient's wrist, in a manner analogous to how the patient would put on a wristwatch or bracelet. With this, the patient can secure the position of the dorsal support (30') in an efficient and firm manner.

[0166] Additionally, the receivers of the fastening bands (31 ') have a geometry and size directly related to the shape of the fastening band (31 '); in the illustrated embodiment, the receivers (30a') are specially configured to receive the fastening bands (31 ') used in this illustrated embodiment example; however, said receivers (30a') or receiving slot (30a') may vary in size or shape from the one illustrated without departing from the essence, spirit and scope of the present invention.

[0167] As has been observed, after a holistic reading of the present description, it is clear that the drive system according to the present invention, thanks to the interaction between each of the elements comprising the internal traction assembly, allows the transfer of the movement driven by the user - through the metacarpophalangeal joint, towards the distal and middle prosthetic phalanges.

[0168] In this sense, it is important to mention that the distal and proximal prosthetic phalanges (T, 3') can be of any size and shape and are not necessarily limited to the shapes and measurements illustrated in the attached Figures. On the contrary, a person with knowledge in the field to which the present invention belongs will understand that regardless of the shapes and measurements of the prosthetic phalanges, the drive system of the present invention is capable of adapting to them and achieving mechanical conduction and transfer and thereby causing the switching of the positions of the prosthetic phalanges as described throughout this application.

[0169] In one embodiment, in order for the prosthetic proximal phalanx (3') to be able to adapt to the shape of any remaining stump, the body of said phalanx (3') is not a continuous solid structure; more specifically, the body of said proximal phalanx (3'), according to an optional embodiment, comprises a space, which is configured to open and separate or close and join together depending on the size of the user's remaining stump.

[0170] Many modifications and other embodiments of the invention will come to mind to one skilled in the art to which the invention pertains, having benefited from the teachings presented in the foregoing descriptions and associated drawings. Therefore, it should be understood that the invention should not be limited to the specific and exemplary embodiments described, but that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are used herein, they are used only in a generic and descriptive sense and not for limiting purposes. Furthermore, it should be understood that the materials from which the various components comprising the invention described herein can be manufactured, the geometries, dimensions, arrangements, and other elements can vary without departing from the scope and spirit of the invention and therefore, the embodiments referred to should not be considered limiting.

[0171] EXAMPLE OF OPERATION

[0172] The following is an example of the operation of the drive system of the present invention, which is incorporated into an orthosis and prosthesis device, which should not be interpreted as limiting, since it is provided in order to complement and facilitate the understanding of the claimed invention.

[0173] Once the orthosis and prosthesis device has been fully assembled, that is, by connecting as described in the present application, the prosthetic phalanges (1, 2, 3) together, as well as the components of the internal traction assembly, that is, the central connector (11), the connecting bars (10), the terminal coupler (20) and the patient has placed the dorsal support (30) on his hand, the present invention, that is, the drive system allows the prosthetic device, particularly the prosthetic phalanges (1, 2, 3) to be driven and switched between two states or configurations: i) extension configuration, when the distal and middle prosthetic phalanges (1, 2) are fully aligned with the proximal phalanx of the patient, that is, they are fully stretched or straight and therefore, there is no difference in angle between said prosthetic phalanges (1, 2) and the proximal phalanx of the patient.

[0174] ¡i) flexion configuration, when the distal and middle prosthetic phalanges (1, 2) are in any relative position with respect to the patient's proximal phalanx, that is, when there is an angle other than zero between the position of the prosthetic phalanges (1, 2) and the patient's proximal phalanx.

[0175] Switching between both states or configurations previously referred to is carried out by means of the movement of the respective metacarpophalangeal joint in which the prosthetic device is placed;more specifically, the movement of said metacarpophalangeal joint is driven by the action of the drive system of the present invention and, derived from the configuration between each of the components of the internal traction assembly, that is, the connection of the inner connector (1 1) between the distal and proximal prosthetic phalanges (1 ,3), the connection between the connecting bars (10) between the middle prosthetic phalanx (2) and the terminal coupler - dorsal support (30), said connecting bars (10) being limited by the passage slot (3a) of the body of the proximal phalanx (3), when the patient wishes the prosthetic device to remain in an extension configuration, the patient's proximal phalanx is aligned (or maintained at zero degrees) with respect to the corresponding metacarpal;alternatively, when the patient wishes the prosthetic device to switch to a flexion configuration, the patient's proximal phalanx is at a certain angle (different from zero degrees) with respect to the corresponding metacarpal, achieving the above in a firm manner, with an efficient and advantageous transmission of the movement of the metacarpophalangeal joint thanks to both the slot (3a) that prevents the bars (10) from moving outwards, and in addition, said slots (3a) allow said bars (10) to adopt a certain inclination depending on the size, position and movement of the remaining stump.

[0176] Specifically, when the prosthetic device is in the extended configuration, the connecting bar (10) drives and pushes the middle prosthetic phalanx (2) also displacing the central connector (11), then forcing the rotation of both the middle prosthetic phalanx (2) and the distal prosthetic phalanx (1); it is worth mentioning that the bars (10) work similarly to a parallel bar mechanism, forcing the prosthetic phalanxes (1,2) to align according to the movement caused by the user.

[0177] On the other hand, when the prosthetic device goes from the extended configuration to the flexion configuration, the connecting bar (10) drives, pulls or pulls the middle prosthetic phalanx (2) also pulling the central connector (1 1), then forcing the rotation of both the middle prosthetic phalanx (2) and the distal prosthetic phalanx (1 ) until they again adopt an extended position.

[0178] Based on the above, when the patient moves his / her remaining phalanx to switch in any of the previously described configurations, advantageously, the drive system of the present invention is capable of transmitting the movement and forcing the positioning of the prosthetic phalanges (1, 2, 3) in an efficient, practical and firm manner, even when there is an external force that opposes or attempts to move the prosthetic phalanges (1, 2) and until the patient rotates his / her remaining phalanx again.

[0179] As an example, when the prosthetic device is in a flexion configuration, the prosthetic phalanges (1 , 2) will retain their position as previously described (i.e., at a non-zero angle), even when there is a resulting counterforce when the patient attempts to grasp an object between the distal prosthetic phalanx (1 ); consequently, the drive system will not allow the prosthetic phalanges to change configuration until the patient rotates his or her remaining phalanx. The above applies equally to the extension configuration.

[0180] In this sense, Figures 12a to 12c illustrate the transition to both extension and flexion states or configurations that the prosthetic device can switch when the drive system according to the present invention is incorporated, by means of the mechanism and form of use described in the present application.

Claims

CLAIMS 1. A drive system adaptable in prosthetic devices that supply the functions of a human finger, said prosthetic devices comprising a set of prosthetic phalanxes formed by a distal prosthetic phalanx (1 ), a middle prosthetic phalanx (2) and a proximal prosthetic phalanx (3); the drive system comprises: a) an internal traction assembly; and b) a dorsal support (30); wherein the internal traction assembly comprises at least one connecting bar (10), at least one central connector (11 ) and at least one terminal coupler (20); the at least one central connector (11) at one of its ends is pivotally coupled to the distal prosthetic phalanx (1 ), and at the other end, said at least one central connector (11 ) is pivotally coupled to the proximal prosthetic phalanx (3);the at least one connecting bar (10) at one of its ends is pivotably coupled to the middle prosthetic phalanx (2) and at the other end, said at least one connecting bar (10) is pivotably coupled to the terminal coupler (20); wherein in addition, the proximal prosthetic phalanx (3) comprises at least one slot (3a), by which the at least one connecting bar (10) passes through the body of the proximal prosthetic phalanx (3) to connect to the terminal coupler (20); and the dorsal support comprises at least one receiving base, said receiving base (32) being configured to receive and allow a pivotal coupling between the dorsal support and the at least one terminal coupler.

2. The drive system according to claim 1, wherein the distal prosthetic phalanx (1) is pivotally coupled to the middle prosthetic phalanx (2) by being supported by end couplers (2a) formed on the middle prosthetic phalanx (2), and wherein the distal prosthetic phalanx (1) is configured to, on the one hand pivotally couple to the couplers (2a) of the middle prosthetic phalanx (2), and additionally, said distal prosthetic phalanx (1) is configured to pivotally couple to a central connector (1 1), and wherein the proximal prosthetic phalanx (3) comprises a bore, disposed above or on top of the bore configured to receive the end coupler (2a), said upper bore of the proximal prosthetic phalanx (3) being configured to pivotally couple to the opposite end of the central connector (1 1).

3. The drive system according to claim 1, wherein the groove (3a) of the proximal prosthetic phalanx (3) are two grooves arranged at each lateral end of the proximal phalanx (3).

4. The drive system according to claim 1, wherein the prosthetic phalanges are made of the same material as each other, said prosthetic phalanges being manufactured with a thickness ranging from 2 mm to 20 mm, and manufactured from any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.

5. The drive system according to claim 1, wherein each prosthetic phalanx is made of a material that is different from one another, said prosthetic phalanxes being made of any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.

6. The drive system according to claim 1, wherein the distal prosthetic phalanx (1) comprises a traction surface arranged on the lower front part of said phalanx (1); said traction surface being made of any material selected from the group comprising silicones such as conductive silicone, silicone with a mixture of carbon black, among others, rubbers, EVA rubber, rubber, silicone, polyethylene, texovinyl, nitrile, neoprene, latex, PVC and / or any combination thereof.

7. The drive system according to claim 1, wherein the central connector (11) is positioned centrally with respect to the width of the distal prosthetic phalanx (1).

8. The drive system according to claim 1, wherein the central connector (11) is made of the same material as the prosthetic phalanges.

9. The drive system according to claim 1, wherein the central connector (11) is made of a different material than the prosthetic phalanges and therefore, said connector (11) is made of any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals. such as steel, titanium, aluminum, alloys, mixtures thereof, copolymers, and / or any suitable ductile material.

10. The drive system according to claim 1, wherein the central connector (11) comprises a cross-section with a shape selected from the group comprising square, rectangle, circle, oval, regular and / or irregular polygon, combinations thereof and / or the like; a thickness in a range from 1 mm to 10 mm and a length in a range from 2 cm to 10 cm and a width in a range from 5 mm to 30 mm.

11. The drive system according to claim 1, wherein the central connector (1 1 ) is arranged centrally with respect to the width of the distal prosthetic phalanx (1 ).

12. The drive system according to claim 1, wherein the connecting rod (10) is made of any material selected from the group comprising carbon steel, high strength steel, stainless steel, alloys such as austenic stainless steel, aluminum, alloys, titanium, nickel alloys, polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, copolymers, and / or any suitable material, combinations thereof and / or the like.

13. The drive system according to claim 1, wherein the connecting bar (10) is manufactured with a thickness in a range from 0.5 mm to 15 mm, with a cross section selected from the group comprising square, rectangle, circle, oval, regular and irregular polygons, combinations thereof and / or similar, a width in a range from 3 mm to 15 mm, and a length in a range from 2 cm to 15 cm.

14. The drive system according to claim 1, wherein the coupling between the bars (10) and the terminal coupler (20) is a pivoting coupling.

15. The drive system according to claim 1, wherein the terminal coupler (20) is made of the same material as the prosthetic phalanges.

16. The drive system according to claim 1, wherein the terminal coupler (20) is made of a different material than the prosthetic phalanges and therefore, said coupler (20) is made of any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, copolymers, mixtures thereof, and / or the like.

17. The drive system according to claim 1, wherein the coupler (20) comprises lower flanges with holes configured to receive the ends of the connecting bars (10) and, said coupler (20) further comprises a central hole, configured to couple with a base (32) arranged in the dorsal support (30), said coupler (20) also having a thickness in a range from 1 mm to 15 mm.

18. The drive system according to claim 1, wherein the terminal coupler (20) is pivotally coupled with the back support (30).

19. The drive system according to claim 1, wherein the dorsal support (30) comprises at least one and up to “n” number of receptor bases (32) and wherein each receptor base (32) is configured to interact with a set of prosthetic phalanges.

20. The drive system according to claim 1, wherein the dorsal support (30) is made of the same material as the prosthetic phalanges.

21. The drive system according to claim 1, wherein the dorsal support (30) is made of a different material than the prosthetic phalanges and therefore, said dorsal support (30) is made of any material selected from the group comprising polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), flexible polyethylene, urethane, nylon, and / or any mixture thereof, as well as metals such as steel, titanium, aluminum, alloys, copolymers, mixtures thereof and / or the like, and furthermore, said dorsal support (30) has a thickness in a range from 1 mm to 15 mm.

22. The drive system according to claim 1, wherein the dorsal support (30) comprises an ergonomic geometry, suitable for coupling to the dorsal portion of the patient's hand, that is, said dorsal support (30) comprises any combination of shapes, such as and not limited to rectangles, squares, circles, ovals, regular and irregular polygons, combinations thereof and / or similar, with a certain curvature and / or with no curvature.

23. The drive system according to claim 1, wherein the dorsal support (30) comprises at least two receivers (30a) configured to respectively receive and couple the fastening bands (31).

24. The drive system according to claim 1, wherein the body of said phalanx (3) is not a continuous solid structure, that is, said body of the phalanx (3) It comprises a space, which is configured to open and separate or close and join together depending on the size of the user's remaining stump.

25. The drive system according to claim 3, wherein the two grooves (3a) are continuous rectangular grooves, with a width that is in a range from 1 mm to 5 mm, and a depth that is in a range from 2 mm to 8 mm.

26. The drive system according to claim 2, wherein the end couplers (2a) are each arranged at a respective end of the middle prosthetic phalanx (2), and said end couplers (2a) are configured to act as a coupling base by receiving, on the one hand, the distal prosthetic phalanx (1) and, on the opposite end, the proximal prosthetic phalanx (3), and wherein the middle prosthetic phalanx (2) is configured to couple with the proximal prosthetic phalanx (3) through an end coupler (2a) and a lower bore arranged in the proximal prosthetic phalanx (3).

27. The drive system according to claim 2, wherein one end of the connector (11) is configured to engage the distal prosthetic phalanx (1) and the other or opposite end of the connector (11) is configured to pivotally engage the proximal prosthetic phalanx (3).

28. The drive system according to claim 4, wherein the grooves (3a) of the proximal prosthetic phalanx (3) are arranged in the anterior portion of said phalanx (3).

29. The drive system according to claim 6, wherein the traction surface of the distal prosthetic phalanx (1) is made of a material compatible with touch devices, "touch" or capacitive devices; said materials being any selected from the group comprising silicones such as conductive silicone, silicone with a mixture of carbon black, among others, rubbers, EVA rubber, rubber, silicone, polyethylene, texovinyl, nitrile, neoprene, latex, nylon, PVC and / or any combination thereof.

30. The drive system according to claim 18, wherein the terminal coupler (20) is supported on the receiving base (32); said receiving base (32) comprises a bore configured to concentrically coincide with the central bore of the terminal coupler (20) and allow pivotal coupling between both components.

31. The drive system according to claim 23, wherein the clamping bands (31) are any selected from the group comprising bands or stretchable bands used in wristwatches, Velcro straps, adjustable straps found in backpacks, belts and bags, elastic bands used in sports, combinations thereof and / or similar, and wherein said fastening band (31) is configured to be fastened to the patient's wrist.

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