FINGER ORTHOSE AND METHOD FOR ITS PREPARATION

Abstract

The invention relates to a finger orthosis and methods for its manufacture. The object of the present invention, to provide a finger orthosis which avoids the disadvantages of the prior art, in particular is patient-specific, is achieved by the fact that it comprises a splint (1) which can be attached to at least one finger and extends longitudinally relative to the fingers, as well as two straps (2) with a locking mechanism (3), wherein - the width of the rail (1) is shorter than a finger joint and forms a bridge (1') that can be arranged between two fingers and is longer than two finger widths, - the bridge (1') is made of plastic and in the area of ​​its two free ends dichotomously transitions into two ends, each having two opposing recesses or tabs (11), - the bands (2) are made of elastic, tensile-resistant plastic or rubber and carry the locking mechanism (3) in which the bands (2) are provided on one side of the surface with the studs or notches (21) and the shape of the free ends of the bands (2) correspond to the recesses or tabs (11) by means of which they can be received and securely locked and released by means of the studs or notches (21), wherein each band (2) runs through the opposite recess or tabs (11) of one of the two free ends of the bridge (1') and can be securely locked and released by being blocked at one of its free ends opposite one of the recesses or tabs (11), so that in the received state of each band (2) adjustable eyelets (4) are preformed for receiving one or more fingers, the diameter of which can be changed by moving the bands (2) in the recesses or tabs (11).

Description

[0001] The invention relates to a finger orthosis and methods for its manufacture, in particular an early mobilization, blocking and relief splint for the fingers, e.g. as a Relative Motion Splint (RMS).

[0002] Orthoses are medical devices used by patients for short-term or long-term purposes. The main reasons for their use include congenital deformities, paralysis, accidents, surgeries, or age-related wear and tear on the musculoskeletal system. They are manufactured and offered as custom-made products, semi-finished products, or finished products.

[0003] Finger and hand orthoses enclose, for example, individual fingers or the hand, dynamic or static finger splints, finger caps, thumb splints or palm protectors, and these can be made of various materials, such as plastic or fiber composite.

[0004] Finger orthoses are often used to treat injuries such as tendon ruptures, arthritis, fractures, or joint problems. Finger orthoses can be custom-made or prefabricated and serve to improve / maintain hand and finger functionality and relieve pain.

[0005] In finger orthoses, the RM orthosis is known as a finger-based mobilization orthosis that positions the affected finger or the corresponding metacarpophalangeal joint (MCPJ) of the finger in a slightly greater extension or flexion than the adjacent MCPJs, which are referred to as Relative Motion Extension (RME) or Relative Motion Flexion (RMF) orthoses, respectively (Schwartz DA. Relative motion orthoses: fabrication tips. J Hand Ther. 2023 Apr-Jun; 36(2):486-493. doi: 10.1016 / j.jht.2022.12.004. Epub 2023 Apr 7. PMID: 37032245.).

[0006] The Relative Motion Orthosis (RMO) or Relative Motion Splint (RMS) was first popularized as part of a postoperative rehabilitation protocol for extensor tendon injuries within the ICAM (Immediate Active Controlled Motion) splint program. Developed in the 1980s, this program is known to achieve favorable results in the treatment of extensor tendon repairs from Zone IV to Zone VII. (Mottay, N., Govender, P., & Mpanza, D. (2020))

[0007] The ICAM splint concept aims to achieve immediate controlled active mobilization (ICAM). This technique protects the repaired tendon by reducing tension on it and positioning the injured finger in relative hyperextension to the uninjured fingers using a zygomatic splint (https: / / www.orfit.com / physicalrehabilitation / blog / splint-in-the-spotlight-relative-motion-orthosis).

[0008] There are different versions of the RMS according to Jensen (Jensen, Carina 2021. The Hand Splint Manual. Therapeutic Splint Supply - New & Optimized. 2nd expanded edition; Wertvoll Wachsen Verlag Gießen): Relative Motion Extension Splint (RMES):

[0009] The affected finger(s) (MCP joints) is / are positioned in 20 degrees of extension relative to the unaffected finger(s).

[0010] Application area (examples): • Controlled active mobilization after tendon repair through tension reduction • Relief of inflamed and irritated extensor tendons Relative Motion Flexion Splints (RMFs):

[0011] The affected finger(s) (MCP joint(s)) is / are positioned in 20 degrees of flexion relative to the unaffected finger(s).

[0012] An example of the application area of ​​RMFs is their use as an MCP blocking brace for extension deficits in the PIP joint with the following parameters: • Flexion and blocking of the MCP joints within the scope of the “normal”, everyday functionality of the hand • thus prevents overstretching or hyperextension of the MCPs • Consequence: greater range of motion in the PIP joints (prevention of contractures) • Can be used in all activities of daily life (self-care, household chores, hobbies and sports)

[0013] Currently, various manufacturing methods are known for producing the finger orthoses mentioned above.

[0014] The materials used for hand- and partially machine-made production are primarily thermoplastic knitted or woven fabrics, with or without shape memory function. The following materials and their properties are examples: I. Orfit “Orficast” rail material • thermoplastic knitted fabric on a roll, e.g., 3 meters long • Available in various widths, thicknesses and colors • Elasticity in two directions / shape memory (in the longitudinal direction) • easy to cut • Self-adhesive, especially when using dry heat • breathable fabric Source: https: / / krewi.de / produkte / verbaende / orficast / ) II. Various thermoplastic splint materials, such as Turbocast, Aquaplast, Manosplint, Orfit, AFH splint material, Ezeform, or Encore • Thermoplastic splint = is an orthopedic aid used to stabilize, support, and immobilize injured or weakened body parts • consists of a special plastic material that becomes flexible and malleable when heated (between 60 and 75 degrees Celsius), allowing it to adapt to the patient's anatomical features • After cooling, the splint hardens and retains its adapted shape, enabling effective and individually tailored stabilization. with the following selectable material properties: 1. Perforation types: not perforated, microperforated or miniperforated - Perforations affect the breathability and flexibility of the splint 2. Coatings: e.g., double-sided fluffy coatings for comfort and reduction of skin irritation 3. Memory effect: allows the splint to be shaped and adjusted multiple times (useful in progressive rehabilitation) 4. Colors and sizes: beige, yellow, pink, light blue and white, and sizes (e.g. 45 cm × 60 cm or 60 cm × 45 cm) (different requirements / preferences) (Source: https: / / premium-therapie.de / de / schienenmaterial / thermoplastics-schienenmaterial? next_page=2) III. Other rail materials include, for example: • Fiber-reinforced plastics: e.g., GRP (glass fiber reinforced plastics) and CFRP (carbon fiber reinforced plastics) = combination of lightness and strength → ideal for use in sports medicine applications • Plaster and synthetic alternatives (e.g., synthetic resins): stable and malleable support; stability develops after the material hardens → Metals: aluminum, stainless steel, and titanium for greater strength, e.g., in cases of severe injuries (Source: https: / / premium-therapie.de / de / schienenmaterial / thermoplastics-schienenmaterial? next_page=2)

[0015] The corresponding manufacturing method for customized hook splint loops to relieve the extensor tendon of the middle finger is disclosed on the internet at: https: / / hooksplint.com / and has the following characteristics: → smooth silicone band with metal core → flexibly adaptable → waterproof

[0016] The HOOK SPLINT as a relative movement orthosis is revealed, for example, in the following writings: US 000004600618 A discloses a rail material comprising a film of thermoplastic material that is easily deformed when heated to an elevated temperature and a layer of loop pile material bonded to a surface of the film such that a strap with a plurality of hooks on it can be mechanically glued to and detached from the loop material.

[0017] This technical solution has the disadvantage that the hooks pose a risk of injury.

[0018] FR 000002860707 A1 discloses a splint with a continuous forearm back wall and a ventral finger support. The wall is fitted with two velvet hook-and-loop fastener strips, opposite which is a hook-and-loop strip with adhesive hooks. Another strip is attached at the wrist. The thumb is attached to the wall at the wrist with a rivet. An assembly consisting of a clip and a hook attachment forms the fixation point for the thumb.

[0019] This technical solution has the disadvantage that the Velcro strips with adhesive hooks can detach and the adhesive hooks pose a certain risk of injury.

[0020] Utility model CN ​​000214805854 U in the technical field of thread-adhesive restraint straps discloses a thread-adhesive restraint strap for a child's dental splint, comprising an entire thread-adhesive restraint strap body, a tension ring and a spacer block, wherein a mounting plate is fixedly connected to the bottom of the entire thread-adhesive restraint strap body, a sleeve shell is fixedly connected to one side of the mounting plate and the spacer block is fixedly connected to the inside of the sleeve shell.Elastic elements are connected to the inner surfaces of the separating blocks in an embedded manner, winding drums are firmly attached to the front surfaces of the elastic elements, fastening strips are firmly attached to both ends of the fastening plate, and the fastening strips allow a user to adjust the distance between the two sets of pressure bars within the fastening strips according to a child's physique. The pressure bar is secured by the interlocking action of a positioning tooth groove and a positioning block, with the retaining mechanism allowing a user to pull out a cotton strap of the appropriate length and attach the cotton strap to a first adhesive plate.

[0021] This technical solution has the disadvantage that it is only intended for dental splints and therefore cannot be applied to hand orthoses.

[0022] Utility model CN ​​000213851309 U discloses a multi-part spliced-type mounting rail with a hook-and-loop fastener, comprising a spliced-type plastic rail and a hook-and-loop fastener, wherein the spliced-type plastic rail is movably connected to the hook-and-loop fastener, and the spliced-type plastic rail comprises an outer side surface, an inner side surface, a convex buckle prong, a round hole, and a reinforcing rib; the spliced-type plastic clamping plate is arc-shaped, the outwardly projecting surface of the arc shape is the outer surface, the inwardly concave surface of the arc shape is the inner surface, two rows of projecting buckle prongs are distributed at one end of the outer surface, two rows of round holes are formed at the other end of the outer surface, and the hook-and-loop fastener consists of an adhesive tape and a buckle.The thermoplastic splice-type splint and the magic adhesive tape fixation band are combined to form the fixation splint; shaping and knotting are not required; materials are flexibly selected for fixation according to the position and length of a wound; fixation strength, firmness and support are improved; the fixation splint covers the wound, secondary wound contamination is prevented, and fixation time is reduced.

[0023] This technical solution has the disadvantage that the buckle nail poses a risk of injury.

[0024] The HOOK SPLINT, as a relative motion orthosis, is therefore a newer generation medical device and serves for the professional treatment of extensor tendon injuries on the back of the hand and forearm for hand rehabilitation, injuries, flexions, contractures, strains, fractures, etc., and is used especially for patients with abnormal mobility of the PIP joint (various diagnoses). (Source: https:llmebocare.com / de / produkt / hook-splint / ? srsltid=AfmBoopHsRc0HpovprO2IPRqdJOr0it8mEiOlrhdDJ9oV_C_84 g-jb4r)

[0025] The well-known WE - Design Silversplints: RMS - Relative Motion Splint 5049 aims to prevent a drooping, "falling" finger. During extension, the drooping finger is supported / lifted by the two adjacent fingers. This technical solution is particularly useful, for example, in cases of finger drooping, extensor tendon injuries, and finger scissors. The higher placement of the central support of this splint creates a so-called "relative motion splint" (yoke), which can be used for extensor tendon injuries. (Source: https: / Isilversplints.de / modelle / rms-relative-motion-splint-5049)

[0026] The following section lists the possibilities, problems, and limitations of current materials and models. 1. Thermoplastic materials - only suitable for short-term use - must be individually adapted; the process takes more time than with ready-made models, e.g., for installation and curing. - require access to hot water and / or hot air → electricity / energy for modeling - are short-lived (become brittle and fragile) - are temperature-sensitive (are affected by external influences such as higher temperatures during the shaping process) - often without locking systems - difficult to modulate and adapt, especially when the hand / finger size changes (circumference) - are often bulky, uncomfortable, and too rigid - are often difficult to remove, difficult to clean and keep dry 2. Hook Splint - Uncomfortable when worn for extended periods → Material and perforation create pressure points, too hard on the finger skin (blocking area) - The rubber coating wears off over time → the underlying metal poses a risk of skin injury. - Angles of desired flexion and extension in the MCP joint are only partially adjustable. - difficult to apply to outer fingers such as the little finger and index finger - only conditionally applicable when multiple fingers are affected - Locking system difficult to use for patients with limited fine motor skills - not aesthetically pleasing, no color choice possible - only suitable for limited use in sporting or heavy work (especially due to the risk of injury from the metal core) 3: We - Design Silversplints: (RMS - Relative Motion Splint 5049) - Uncomfortable when worn for extended periods → Material creates pressure points, too hard on the finger skin (blocking) - Difficult to adjust / bend due to material hardness - Fingers are measured, material is not fitted directly to the skin → prone to fit errors - Angles of desired flexion and extension in the MCP joint are only partially adjustable. - No locking system - slips and is hardly adjustable for changing finger sizes. - high price - can only be submitted to the health insurance company via a cost estimate (medical supply store partner) → long waiting times for approval / production for the patient - not to be used for heavy work or sporting activities - risk of injury

[0027] The object of the present invention is to provide a finger orthosis and a method for its manufacture which avoids the disadvantages of the prior art, in particular to provide a flexible, multifunctional finger orthosis with modular properties which is inexpensive and at the same time ensures high and individually adaptable wearing comfort as well as being robust, durable, lightweight and visually appealing.

[0028] Furthermore, the finger orthosis to be provided should enable the treatment of one or more fingers, be easy to install for both patient and therapist, be comfortable for the patient after application without slipping, and at the same time be flexible, supportive and slightly stretchable.

[0029] According to the invention, this problem is solved by the features of the first claim. Further advantageous embodiments of the invention are specified in the dependent claims.

[0030] The provided finger orthosis is based on the following previously known state of the art: A finger orthosis according to the prior art comprises a splint that can be attached to the upper or lower side of a finger and runs longitudinally along the finger, the length of which corresponds to the length of the finger, and two straps with a locking mechanism, wherein the splint is made of plastic and has two opposing recesses in the area of ​​its free ends, and the straps are made of elastic, tensile-resistant plastic or rubber and form a locking mechanism in which the recesses correspond in shape to the straps and by means of which the straps are received, in which each strap runs through the two opposing recesses of a free end of the splint and can be locked and released securely, in which the strap is blocked at one of its free ends opposite one of the recesses.

[0031] Based on this state of the art, three variants of a new finger orthosis are provided.

[0032] The provided finger orthosis comprises a splint, which can be attached to at least one finger and runs longitudinally opposite the fingers, as well as two straps with a locking mechanism, which are modified from the prior art as follows: The width of the rail [which corresponds to the length of the rail according to the prior art] is shorter than a finger joint and forms a bridge that can be arranged between two fingers and is longer than two finger widths.

[0033] This bridge is made of plastic and at its two free ends dichotomously transitions into two ends, each having two opposing recesses or tabs, the bands being made of elastic, tensile-resistant plastic or rubber and carrying the locking mechanism, in which the bands are provided on one side of the surface with the bumps or notches and the shape of the free ends of the bands correspond to the recesses or tabs by means of which they can be picked up and firmly locked and released using the bumps or notches (so-called click system).

[0034] In this arrangement, each band (2) runs through the opposite recesses or tabs (11) of one of the two free ends of the bridge (1') and can be locked and released securely by being blocked at one of its free ends opposite one of the recesses or tabs (11),

[0035] This creates adjustable eyelets (4) in the received state of each band (2) for receiving one or more fingers, the diameter of which can be changed by moving the bands (2) in the recesses or tabs (11).

[0036] The bridge can be made slightly narrower and with a recess for the support of one finger, or slightly wider and with two recesses for the support of two fingers.

[0037] Alternatively, the bridge and one strap or the bridge and two straps can be designed as a double loop for two fingers or a single loop for one finger as follows: These two alternative finger orthoses include a splint that can be attached to one or two fingers and runs lengthwise opposite the fingers, as well as one or two straps with a locking mechanism. wherein the width of the rail is shorter than a finger joint and forms a bridge which is longer than two finger widths and the bridge can be arranged longitudinally between two fingers and transitions on one or both sides into a band with a locking mechanism.

[0038] In the first embodiment, the bridge and the band are one piece and made of plastic, with the bridge being centrally located and having one or two recesses, and being firmer and harder in consistency than the band.

[0039] The band is elastic and tensile-resistant and has, over at least part of its total length, at least on one side, studs or notches on its surface at a distance as a locking mechanism, in which part of the band is provided with the studs or notches and the shape of the free ends of the band corresponds to recesses by means of which the band can be picked up and securely locked and released using the studs or notches.

[0040] The band transitions from the bridge towards its free end into a narrowed section, the width of which corresponds to the width of the recess and can therefore be inserted into the recess in a corresponding manner.

[0041] In the second embodiment (with two bands), each of the two bands transitions from the bridge towards its free end into a narrowed part, the two narrowed parts being opposite in position and not mirror images, and the width of the two narrowed parts corresponding to the width of the recesses and thus being able to be received into these recesses in a corresponding manner, without the two bands spatially obstructing each other.

[0042] In the received state of the strap or straps, one or two adjustable eyelets for receiving one or two fingers are pre-formed, the diameter of which can be changed by moving the strap or straps through the recess or recesses.

[0043] The invention also includes the fact that the orthosis is provided with an eyelet with a finger rest to fix a finger along its course, or that three orthoses with two small eyelets and a large eyelet with a palm rest are connected in the middle between them to fix the thumb and the little finger of a hand with the palm rest.

[0044] The invention also includes a further embodiment in which a Relative Motion Splint with a spectacle-like shape is provided, which is manufactured without a band or strap as well as without a recess or tab, in which the two dichotomous ends of the bridge are positively and firmly connected to each other, so that instead of the pincer-like round shape a ring shape is formed, which is manufactured specifically for the patient.

[0045] Furthermore, the invention also provides that, particularly in the case of lengthy treatments (with or without morphological changes to the patient's fingers), the parts of the finger orthosis can be assembled and replaced using a modular system, which leads to further cost minimization.

[0046] The production of the finger orthosis involves first determining the patient-specific data of one or more patient fingers using a state-of-the-art optical scanning method.

[0047] In a second step, the patient-specific data obtained are used to control and regulate a known injection molding process or a known 3D printing process with the patient-specific data of the bridge and data for the position of the recesses or tabs on the bridge, in order to print the bridge from plastic material and thereby generate the recesses or tabs.

[0048] Finally, in a third step, the recesses or tabs are fitted with the band or strap made of elastic but tensile-resistant plastic or rubber, so that adjustable eyelets for receiving one or more patient fingers are pre-formed and the finger orthosis is ready for use.

[0049] The invention also includes the possibility that specific additives, such as physiologically / medicinally active substances or dyes, can be added to the base material granules for the plastic used in 3D printing technology during the production of the bridge.

[0050] The plastic has the following general properties: - flexible, i.e. depending on the orthosis component and physiological-medical effect on the fingers (finger guidance, band material, bridge), harder or softer adjustable plastic (this can be adjusted, for example, via 3D printing and by selecting from known base material granules) - robust, durable, - light, - Water, dirt and temperature resistant, - sterilizable (e.g., if the finger orthosis is applied in surgery), and - visually appealing, with a choice of colors (this can be adjusted by adding dyes during 3D printing).

[0051] Furthermore, the plastic has the following mechanical and modular properties: • Multifunctional applications - covering multiple indications, diseases and injuries (this is made possible by patient-specific 3D printing), • Treatment of one or more fingers, • easy to install (for both the patient and the therapist), • comfortable, with a high level of wearing comfort for the patient, • not too smooth (so it doesn't slip), • Flexible, yet supportive and, if desired, also slightly stretchable (this is possible through patient-specific 3D printing) • Rounded edges without sharp protrusions or "noses" (avoiding injuries and pressure points) and • Wall thickness sufficient for support, not too thick.

[0052] Furthermore, the plastic used to manufacture the finger orthosis has the following physiological-therapeutic properties: • stabilizing, • pause-inducing, relieving, • restoring function, • in stock, • promoting healing and • mobilizing.

[0053] Furthermore, it is also within the scope of the invention that, for cost reasons, the individual components of the finger orthosis are to be manufactured in different standard sizes using thermoplastic injection molding.

[0054] The more expensive manufacturing method, which involves scanning the patient's hand to create a 3D model and subsequently 3D printing it, is particularly suitable when a special solution or anatomical conditions require it.

[0055] The following advantages are associated with the properties of the provided finger orthosis: Compared to the current state of the art, this technical solution enables a more effective and cost-efficient, and in particular individualized, provision of patient-specific finger orthoses, which can be used as: • Relative motion splint for extension of the MCP / middle finger - metacarpophalangeal joint • Ring ligament protection splint for ring ligament diseases and injuries • soft ring band protection rail • Block splint for stenosing tenosynovitis (trigger finger) • double ring band protection rail or • Figure-eight loop or combination splint for several fingers can be used, achieving a good hold / seat with multiple removal and reapplication of the orthosis and improved wearing comfort with easy handling for the patient.

[0056] Furthermore, the provided finger prosthesis can be optimized and varied in a modular system, which offers the following advantages: - Supply to all and multiple fingers is ensured by a splint system based on, for example, a modular system: → Separate finger rings and finger bridge for individual modulation → Configuration of different bridge lengths → Click system: Components (bridge / finger rings) connect, which results in the following: - One or more fingers can be brought into MCP extension or flexion - the finger ring system can be used individually to treat multiple indications, diseases and injuries

[0057] The invention is explained in more detail below with reference to the exemplary embodiments and the figures, without being limited to these.

[0058] This shows: Fig. 1: a schematic representation of an embodiment according to the prior art, Fig. 2a: a schematic 3D representation of a first embodiment of the finger orthosis according to the invention (with a recess for the support of a finger), Fig. 2b: a side view of the embodiment according to Fig. 1 Fig. 3: a representation of the embodiment according to Fig. 1 with all side views, Fig. 4: a schematic representation of a second embodiment of the finger orthosis according to the invention (with two recesses for supporting two fingers), Fig. 5: a representation of the embodiment according to Fig. 4 in three different side views, Fig. 6: a schematic representation of a third embodiment of the finger orthosis according to the invention in open form in three views, Fig. 7: a representation of the embodiment according to Fig. 6 in closed form with two eyelets (double loop for two fingers), Fig. 8: a schematic representation of a fourth embodiment of the finger orthosis according to the invention in open form in three views, Fig. 9: a representation of the embodiment according to Fig. 8 in closed form with an eyelet (single loop for one finger), Fig. 10: a schematic representation of a fifth embodiment of the finger orthosis according to the invention in closed form with an eyelet according to Fig. 9 with a finger rest, Fig. 11: a schematic representation of a sixth embodiment of the finger orthosis according to the invention in closed form with two small eyelets according to Fig. 9, an intermediate large eyelet with a palm rest, and Fig. 12: a schematic representation of the embodiment according to Fig. 11 in the applied state on a hand with palm rest and fixation of thumb and no finger.

[0059] The Fig. Figure 1 shows a finger orthosis according to the prior art. This orthosis comprises a splint (1) that can be attached to the upper or lower surface of a finger and extends longitudinally along the finger, the length of which corresponds to the length of the finger, and two straps (2) with a locking mechanism (3). The splint (1) is made of plastic and has two opposing recesses (11) at each of its free ends. The straps (2) are made of elastic, tensile-resistant plastic or rubber and form a locking mechanism (3) in which the recesses (11) correspond in shape to the straps (2) and by means of which the straps (2) are received. Each strap (2) runs through the two opposing recesses (11) of a free end of the splint (1) and can be locked and released securely. The strap (2) is blocked at one of its free ends opposite one of the recesses (11).

[0060] Based on this state of the art, for example, three variants of a new finger orthosis are provided, which are used in the Fig. 2a, Fig. 2b, as well as 4 and 7 are shown.

[0061] The in the Fig. 2a and Fig. 2b first embodiment and the embodiment shown in the Fig. 4 The second embodiment of the finger orthosis shown comprises a splint (1) which can be attached to at least one finger and extends longitudinally relative to the fingers, as well as two straps (2) with a locking mechanism (3), which are modified compared to the prior art as follows:

[0062] The width of the rail (1) [which is the length of the rail (1) according to Fig. 1 corresponds] is shorter than a finger joint and forms a bridge (1') that can be arranged between two fingers and is longer than two finger widths.

[0063] This bridge (1') is made of plastic and dichotomously transitions at its two free ends into two ends, each having two opposing recesses or tabs (11). The bands (2) are made of elastic, tensile-resistant plastic or rubber and carry the locking mechanism (3). The locking mechanism is formed by the bands (2) having studs or indentations (21) on one side of their surface. The shape of the free ends of the bands (2) corresponds to the recesses or tabs (11) by which they can be picked up and securely locked and released using the studs or indentations (21). Each band (2) runs through the opposing recesses or tabs (11) of one of the two free ends of the bridge (1') and can be securely locked and released by being blocked at one of its free ends against one of the recesses or tabs (11).

[0064] This creates adjustable eyelets (4) in the received state of each band (2) for receiving one or more fingers, the diameter of which can be changed by moving the bands (2) in the recesses or tabs (11).

[0065] The embodiment according to the Fig. 2 differs from the embodiment according to the Fig. 4 in particular by the fact that the bridge (1') in Fig. 2 is slightly narrower (and has a recess for resting a finger) than the bridge (1') in the Fig. 4 (with two recesses for resting two fingers).

[0066] In Fig. 7 (double loop for two fingers) and Fig. Figure 9 (single loop for one finger) shows the embodiments of two further variants of the finger orthosis with two eyelets or one eyelet for finger attachment.

[0067] These two embodiments of the finger orthosis comprise a splint (1) that can be attached to one or two fingers and extends longitudinally relative to the fingers, as well as two bands (2) with a locking mechanism (3), wherein the width of the splint (1) is shorter than a finger joint and forms a bridge (1") that is longer than two finger widths and the bridge (1") can be arranged longitudinally between two fingers and extends into a band (2') with a locking mechanism (3) on one or both sides.

[0068] The bridge (1") and the band (2') are one piece and made of plastic, with the bridge (1") being centrally located and having a recess [see Fig. 8 and Fig. 9 in the single loop for one eyelet to accommodate one finger] or two recesses (11) [see Fig. 6 and Fig. 7 has a double loop for two eyelets to accommodate two fingers] and is firmer and harder in consistency than the band (2').

[0069] The band (2') is elastic and tensile-resistant and has, over at least part of its total length, at least on one side, studs or indentations (21') on its surface at a distance as a locking mechanism (3), in which part of the band (2') is provided with the studs or indentations (21) and the shape of the free ends of the band (2') corresponds to the recesses (11) by means of which the band (2') can be picked up and can be securely locked and released using the studs or indentations (21).

[0070] For the variant according to Fig. 9 [Single loop for one finger with a band (2')] is at the bridge (1") this band (2) extends from the bridge (1) towards its free end into a narrowed part, the width of the narrowed part corresponding to the width of the recesses (11) and thus being able to be received into the recess (11) correspondingly.

[0071] For the variant according to Fig. 7 [Double loop for two fingers with two straps (2') on the left and right of the bridge (1")] Each of the two straps (2') extends from the bridge (1") towards its free end into a narrowed section, the two narrowed sections being opposite in position and not mirror images, and the width of the two narrowed sections corresponding to the width of the recesses (11) and thus fitting into these recesses (11) without the two straps (2') interfering with each other. This design is illustrated in the representation of the Fig. 6.

[0072] In the recorded state of the tape (2') [see Fig. 9] or the bands (2') [see Fig. 7] One or two adjustable eyelets (4) are preformed for receiving one or two fingers, the diameter of which can be changed by moving the band (2') or bands (2) through the recess (11) or recesses (11).

[0073] The advantage of all three variants is that: - the studs or indentations (21) are arranged on the outside of the band (2; 2') forming the eyelet (4), -the distance between the studs or indentations (21) is regular, - the bridge (1'; 1'') and the band (2; 2') are manufactured from plastic powder using 3D printing or injection molding processes based on patient-specific computed tomography data, - the plastic is coated with active ingredients that can diffuse from the plastic into the finger - and in particular in the embodiments according to Fig. 2 and Fig. 4, that the bridge (1' or 1'') dichotomously transitions at its two ends into a pincer-like round shape, with the recesses or tabs (11) being opposite each other and forming the loops (4) with the bands (2 or 2'), so that a relative motion splint with a spectacle-like shape is formed.

[0074] Within the scope of the invention, the orthosis according to [the invention] is also included in a fifth embodiment of the finger orthosis according to the invention. Fig. 9 (closed form with an eyelet) to be provided with a finger rest, or in a sixth embodiment of the finger orthosis according to the invention, two small eyelets according to Fig. 9 and a large eyelet in between Fig. 9 to be provided with a palm rest in order to fix the thumb and little finger of one hand with the palm rest (see Fig. 12).

[0075] The production of the finger orthosis thus takes place in a first step where the patient-specific data of one or more patient fingers are determined by an optical scanning procedure according to the state of the art.

[0076] In a second step, the determined patient-specific data are used to control and regulate a known 3D printing or injection molding process with the patient-specific data of the bridge (1) and data for the position of the recesses or tabs (11) on the bridge (1) in order to print the bridge (1'; 1'') from plastic material and thereby generate the recesses or tabs (11).

[0077] The recesses or tabs (11) are, if the band (2') or bands (2; 2') are not an integral part of the bridge (1'; 1), finally provided in a third step with the band (2') or bands (2, 2') made of elastic but tensile-resistant plastic or rubber, so that adjustable eyelets (4) for receiving one or more patient fingers are preformed and the finger orthosis is ready for use.

[0078] The invention also includes the possibility that specific additives, such as physiologically / medicinally active substances or dyes, can be added to the base material granules for the plastic during the 3D printing or injection molding process in the manufacture of the bridge (1'; 1'').

[0079] For example, in Fig. The finger orthosis shown in Figure 2, in the form of a Relative Motion Splint, offers the possibility of providing support for one finger (e.g., middle or ring finger) or for two fingers (e.g., for positioning the MCP of the ring and middle fingers in extension) by means of the multi-adjustable and usable adjustment mechanism with the flexible, length-adjustable straps (2) (for fixation for different finger circumferences), whereby the flexible plastic of the bar (1) has sufficient stability in the area of ​​the finger groove.

[0080] The invention also includes the provision of a flexible Relative Motion Splint, individually manufactured using 3D printing or injection molding, with a "spectacle-like" shape, which is made of elastic plastic without a strap (2; 2') (i.e., without adjustment options) and features a notch for finger guidance and two entry holes for the fingers [instead of, for example, the Fig. 2 and Fig. 4 evident pincer-like round dichotomous ends of the bridge (1'; 1'') with the eyelets (4)] is designed (in which the two dichotomous ends of the bridge (1) are positively and firmly connected opposite each other) and offers the possibility of patient-specific provision of each finger (e.g. middle or ring finger) (not shown in the figures).

[0081] The invention also includes a further embodiment in which a relative motion splint with a spectacle-like shape is provided, in which, as in, for example, the Fig.Figure 7 shows a provided finger orthosis in the form of an individually adjustable, flexible "figure-eight loop" (= combination splint for several fingers lying next to each other, e.g. index and middle fingers), in which the bridge (1'; 1'') is shortened to such an extent that its two dichotomous ends with the multi-adjustable and usable closure system, which forms the adjustable finger loops, are arranged directly next to each other, but still slightly apart from each other, so that the figure-eight loop can be used at different points on the fingers and can be combined with several fingers, which means that the figure-eight loop can be used in different areas of the finger length (also doubled up).

[0082] Furthermore, the invention also provides that, particularly in the case of lengthy treatments (with or without morphological changes to the patient's fingers), the parts of the finger orthosis can be assembled and replaced using a modular system, which leads to further cost minimization.

[0083] The use of the finger orthosis described above is therefore very diverse, e.g. as early mobilization, blocking or relief splints for a patient's fingers, or as a relative motion splint.

[0084] Key applications include as • Relative Motion Splint (1 finger), in which the middle or index finger is supported, • Relative Motion Splint (2 fingers), in which the middle and ring fingers are supported, • Ring band protection (1 finger), in which one finger is stabilized by a loop, • Ring band protection (2 fingers), in which one finger is stabilized by an adjacent finger, • Ring band protection with extended support, which prevents the finger from snapping downwards in the case of trigger finger or • as a splint for all fingers as a support to stabilize the thumb and any other finger.

[0085] The advantage of all embodiments of the provided finger orthosis lies in its flexible, multifunctional and modular properties, which, based on the captured special data of a patent, can be manufactured using 3D technology in a patient-specific, inexpensive and at the same time high and individually adaptable wearing comfort, as well as being robust, durable, lightweight and visually appealing.

[0086] Furthermore, the provided finger orthosis allows for the treatment of single or multiple fingers, is easy to install for both patient and therapist, and is comfortable for the patient after application, as it does not slip and is at the same time flexible, supportive and slightly stretchable.

[0087] All features described in the description, the exemplary embodiments and the following claims can be essential to the invention, either individually or in any combination. Reference sign 1 rail 1'; 1'' Bridge 11. Cutout or tab 2; 2' Band 21 studs or indentations 3 Locking mechanism 4 eyelets 5 finger rests on the bridge 6. Palm rest, extending from the bridge with three eyelets

Claims

[1] Finger orthosis comprising a splint (1) that can be attached to at least one finger and extends longitudinally opposite the fingers, and two straps (2) with a locking mechanism (3), characterized by , that - the width of the rail (1) is shorter than a finger joint and forms a bridge (1') that can be arranged between two fingers and is longer than two finger widths, - the bridge (1') is made of plastic and in the area of ​​its two free ends dichotomously transitions into two ends, each having two opposing recesses or tabs (11), - the straps (2) are made of elastic, tensile-resistant plastic or rubber and carry the locking mechanism (3) in which the straps (2) are provided on one side of the surface with bumps or indentations (21) and the shape of the free ends of the straps (2) correspond to the recesses or tabs (11) by means of which they can be picked up and securely locked and released by means of the bumps or indentations (21), wherein each band (2) runs through the opposite recesses or tabs (11) of one of the two free ends of the bridge (1') and can be locked and released securely by being blocked at one of its free ends opposite one of the recesses or tabs (11), so that in the received state of each band (2) adjustable eyelets (4) are preformed for receiving one or more fingers, the diameter of which can be changed by moving the bands (2) in the recesses or tabs (11). [2] Finger orthosis comprising a splint (1) which can be attached to one or two fingers and which extends longitudinally opposite the fingers, and a strap (2) or two straps (2) with a locking mechanism (3), characterized by , that - the width of the rail (1) is shorter than a finger joint and forms a bridge (1'') that is longer than two finger widths, - that the bridge (1'') can be arranged lengthwise between two fingers and transitions on one or both sides into a band (2') with a locking mechanism (3), - the bridge (1'') and the strap (2') are one piece and made of plastic, - the bridge (1'') is centrally located and has one or two recesses (11) and is firmer and harder in consistency than the band (2'), - the band (2') is elastic and tensile-resistant and has, over at least part of its total length, at least on one side, studs or indentations (21') on its surface at intervals as a locking mechanism (3), in which part of the band (2') is provided with the studs or indentations (21) and the shape of the free ends of the band (2') corresponds to the recesses (11) by means of which the band (2') can be picked up and securely locked and released by means of the studs or indentations (21), wherein - in the case of a band (2') on the bridge (1'') this band (2) transitions from the bridge (1) towards its free end into a narrowed part and the width of the narrowed part corresponds to the width of the recess (11) and can therefore be received into the recess (11) correspondingly, or - with one band (2') on the left and one on the right of the bridge (1''), each of the two bands (2') transitions from the bridge (1'') towards its free end into a narrowed part, the two narrowed parts being opposite in position and not mirror images, and the width of the two narrowed parts corresponding to the width of the recesses (11) and thus being able to be received correspondingly into these recesses (11) without the two bands (2') interfering with each other spatially, so that in the received state of the band (2') or bands (2') one or two adjustable eyelets (4) for receiving one or two fingers are preformed, the diameter of which can be changed by moving the band (2') or bands (2) through the recess (11) or recesses (11). [3] Finger orthosis according to claim 1 or 2, characterized by, that the studs or indentations (21) are arranged on the outside of the band (2; 2') forming the eyelet (4). [4] Finger orthosis according to one or more of claims 1, 2 or 3, characterized by , that the distance between the bumps or indentations (21) is regular. [5] Finger orthosis according to claims 3 and 4, characterized by , that the bridge (1'; 1'') and the band (2; 2') are manufactured from plastic powder using 3D printing or injection molding processes based on patient-specific computed tomography data. [6] Finger orthosis according to one or more of claims 1 to 5, characterized by that the plastic is coated with active ingredients which can diffuse from the plastic into the finger. [7] Finger orthosis according to one or more of claims 1, 3, 4, 5 or 6, characterized by, that the bridge (1'; 1'') dichotomously transitions at its two ends into a pincer-like round shape, with the recesses or tabs (11) being opposite each other and forming the loops (4) with the bands (2 or 2'), so that a relative motion splint with a spectacle-like shape is formed. [8] Method for manufacturing a finger orthosis according to one or more of claims 1 to 7 in which patient-specific data of one or more patient fingers are determined by an optical scanning method, the determined patient-specific data are used to control and regulate a 3D printing or injection molding process with patient-specific data of the bar (1'; 1'') and data for the position of the recesses or tabs (11) on the bar (1'; 1'') in order to print the bar (1'; 1'') and the band (2') from plastic material, or to provide the recesses or tabs (11) with the band (2') or the bands (2 or 2') so that an adjustable eyelet (4) or two adjustable eyelets (4) for receiving one or two patient fingers are preformed. [9] Use of a finger orthosis according to one or more of claims 1 to 7 as an early mobilization, blocking or relief splint for the fingers of a patient. [10] Use of a finger orthosis according to one or more of claims 1 to 7 as a relative motion splint.

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