Fingerorthese

Abstract

Finger orthosis comprising a splint (1) extending longitudinally opposite the fingers and attachable to at least one finger, and two straps (2) with a locking mechanism (3), characterized in 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 the studs 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 studs 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).

Description

[0001] The invention relates to a finger orthosis, in particular an early mobilization, blocking and relief splint for the fingers, for example as a relative motion splint (RMS).

[0002] Orthoses are medical devices used by patients for either a short-term or long-term basis. The main reasons for their use can be 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, for example, enclose individual fingers or the hand, dynamic or static finger splints, finger caps, thumb splints or palm protection, whereby 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 tears, arthritis, fractures, or joint problems. Finger orthoses can be custom-fitted or prefabricated and are designed to improve / maintain the functionality of the hand and fingers and relieve pain.

[0005] Among 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 (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] Relative Motion Orthosis (RMO) or Relative Motion Splint (RMS) first became popular as a component of a postoperative rehabilitation protocol for extensor tendon injuries within the Immediate Active Controlled Motion Program (ICAM). This splint program was developed in the 1980s and is known to produce 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 splinting concept involves achieving 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 yoke 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 (2021): Relative Motion Extension Splint (RMES): The affected finger(s) (MCP joints) is / are positioned at 20 degrees of extension relative to the unaffected finger(s). Scope of application (examples): • Controlled active mobilization after tendon repair by reducing tension • Relief of inflamed and irritated extensor tendons Relative Motion Flexion Splints (RMFs): The affected finger(s) (MCP joints) is / are positioned at 20 degrees of flexion relative to the unaffected finger(s).

[0009] An example of the application of RMFs is the use as an MCP blocking brace for extension deficits in the PIP joint with the following parameters: • Flexion of the MCP joints and blocking within the scope of the “normal”, everyday functionality of the hand • thus prevents overstretching or hyperextension of the MCPs • Result: greater range of motion in the PIP joints (prevention of contractures) • Can be used in all activities of daily life (self-care, household, hobbies and sports)

[0010] Currently, various manufacturing methods are known for producing the finger orthoses mentioned above.

[0011] The materials used for hand- and partly machine-made production are primarily thermoplastic knitted or warp-knitted fabrics with or without shape memory function. Examples of these materials and their properties are: I. Orfit “Orficast” splint material • thermoplastic knitted fabric on a 3-meter roll • Available in various widths, thicknesses and colors • Elasticity in two directions / shape memory (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 device 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), so that it can be adapted to the anatomical conditions of the patient • After cooling, the splint hardens and retains its adjusted shape, enabling effective and individually tailored stabilization with the following selectable material properties: 1. Perforation types: non-perforated, micro-perforated or mini-perforated - Perforations affect the breathability and flexibility of the splint 2. Coatings: e.g. fluffy coatings on both sides for wearing comfort and reduction of skin irritations 3. Memory effect: allows the splint to be shaped and adjusted multiple times (useful for progressive rehabilitation) 4. Colors and sizes: beige, yellow, pink, light blue and white and sizes (e.g. 45 cm x 60 cm or 60 cm x 45 cm) (different requirements / preferences) (Source: https: / / premium-therapie.de / de / schienenmaterial / thermoplastics-schienenmaterial? next_page=2) III. Other rail materials include: • Fiber-reinforced plastics: e.g. GFK (glass fiber reinforced plastics) and CFK (carbon fiber reinforced plastics) = combination of lightness and strength → ideal for use in sports medicine applications • Plasters and synthetic alternatives (e.g. synthetic resins): stable and malleable support, stability is created after the material has hardened → Metals: aluminum, stainless steel and titanium for greater strength, e.g. in case of serious injuries (Source: https: / / premium-therapie.de / de / schienenmaterial / thermoplastics-schienenmaterial? next_page=2)

[0012] The corresponding manufacturing method for customized Hook Splint loops to relieve the extensor tendon of the middle finger is disclosed online at: https: / / hooksplint.com / and has the following features: → smooth silicone band with metal core → flexibly adaptable → waterproof

[0013] The HOOK SPLINT as a relative movement orthosis is disclosed, for example, in the following publications: US 000004600618 A discloses a splint material comprising a film of thermoplastic material which is easily deformable when heated to an elevated temperature, and a layer of loop pile material bonded to a surface of the film so that a strap having a plurality of hooks thereon can be mechanically bonded to and detached from the loop material.

[0014] This technical solution has the disadvantage that the hooks pose a risk of injury.

[0015] FR 000002860707 A1 discloses a splint with a continuous forearm dorsal wall and a ventral finger rest. The wall is provided with two velvet Velcro fasteners, opposite which is a Velcro strip with adhesive hooks. Another strip is attached at the wrist. The thumb is attached to the wall with a rivet at the wrist. An assembly consisting of a clip and a hook attachment forms the fixation point for the thumb.

[0016] This technical solution has the disadvantage that the Velcro strips with adhesive hooks can come loose and there is a certain risk of injury due to the adhesive hooks.

[0017] Utility model CN ​​000214805854 U in the technical field of thread-adhesive restraint belts discloses a thread-adhesive restraint belt for a child's dental splint, which comprises an entire thread-adhesive restraint belt body, a tension ring and a spacer block, wherein a fixing plate is fixedly connected to the bottom of the entire thread-adhesive restraint belt body, a sleeve shell is fixedly connected to one side of the fixing plate, and the spacer block is fixedly connected to the inside of the sleeve shell.Elastic elements are connected to the inner sides of the separation blocks in an embedded mode, winding drums are firmly connected to the front sides of the elastic elements, fastening strips are firmly connected to the two ends of the fastening plate, and the fastening strips can allow a user to adjust the distance between the two sets of pressure rods in the fastening strips according to a child's physique. The pressure rod is fixed by the mutual engagement effect of a positioning tooth groove and a positioning block, and the retention mechanism allows a user to pull out a cotton belt of the appropriate length and attach the cotton belt to a first adhesive plate.

[0018] This technical solution has the disadvantage that it is only intended for dental splints and therefore cannot be transferred to hand orthoses.

[0019] Utility Model CN ​​000213851309 U discloses a multi-piece splice-type fixing splint with a magic tape fixing band, which comprises a splice-type plastic splint and a magic tape fixing band, wherein the splice-type plastic splint is movably connected to the magic tape fixing band, and the splice-type plastic splint includes an outer side surface, an inner side surface, a convex buckle nail, a round hole, and a reinforcing rib, the splice-type plastic clamping plate is arc-shaped, the outwardly projecting surface of the arc shape is the outer side surface, the inwardly concave surface of the arc shape is the inner side surface, two rows of projecting buckle nails are distributed at one end of the outer side surface, two rows of round holes are formed in the other end of the outer side surface, and the hook and loop fixing band is composed of an adhesive tape and a buckle.The splice-type thermoplastic plastic splint and the magic tape fixation band are combined to form the fixation splint, no need for shaping and knotting, materials are flexibly selected for fixation according to the position and length of a wound, the fixation strength, firmness and supporting force are improved, the fixation splint covers the wound, secondary contamination of the wound is prevented, and the fixation time consumption is shortened.

[0020] This technical solution has the disadvantage that there is a risk of injury from the buckle nail.

[0021] The HOOK SPLINT as a relative movement orthosis is a newer generation medical device and is used for the professional treatment of extensor tendon injuries on the back of the hand and forearm for hand rehabilitation, injuries, flexions, contractures, stretches, fractures, etc. and is especially used for patients with abnormal mobility of the PIP joint (various diagnoses). (Source: https: / / mebocare.com / de / produkt / hook-splint / ? srsltid=AfmBoopHsRc0HpovprO2IPRqdJOr0it8mEiOlrhdDJ9oV_C_84 g-jb4r)

[0022] The goal of the well-known WE Design Silversplints: RMS - Relative Motion Splint 5049 is to prevent a drooping, "dropping" finger. During extension, the drooping finger is supported / lifted by the two adjacent fingers.

[0023] This technical solution is particularly useful for cases of finger drooping, extensor tendon injuries, and finger scissors. The higher positioning 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: / / silversplints.de / modelle / rms-relative-motion-splint-5049)

[0024] The following outlines the possibilities, problems and limitations of current materials and models. 1. Thermoplastic materials - only suitable for short-term use - must be individually adjusted, process takes more time than with finished 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 influenced by external factors such as higher temperatures during molding) - often without closure systems - difficult to modulate and adjust, especially in case of changes in the hand / fingers (circumference) - are often bulky, uncomfortable and too rigid - are often difficult to take off, difficult to clean and keep dry 2. Hook Splint - uncomfortable when worn for a longer period of time → material and perforation cause pressure points, too hard on the finger skin (blocking area) - Rubber coating wears off over time → underlying metal creates a risk of injury to the skin - Angles of desired flexion and extension in the MCP - joint only partially adjustable - difficult to use for outer fingers such as little finger and index finger - only partially applicable if several fingers are affected - Closure system difficult to implement for patients with limited fine motor skills - not particularly aesthetically pleasing, no color selection 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 a longer period of time → material creates pressure points, too hard on the finger skin (blocking) - difficult to adjust / bend due to the hardness of the material - fingers are measured, material is not adjusted directly to the skin → fit is prone to errors - Angles of desired flexion and extension in the MCP - joint only partially adjustable - no closure system - slips and is hardly adjustable for changing finger circumferences - high price - can only be submitted to the health insurance company via a cost estimate (medical supply store partner) → long waiting times until approval / production for the patient - Do not use for heavy work or sporting activities - risk of injury

[0025] The object of the present invention is to provide a finger orthosis 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 adjustable wearing comfort and is robust, durable, lightweight and visually appealing.

[0026] Furthermore, the finger orthosis to be provided should enable the treatment of single or multiple fingers, be easy to install for both patient and therapist, be comfortable for the patient after application, must not slip and at the same time be flexible, supportive and easily stretchable.

[0027] According to the invention, this object is achieved by the features of the first claim. Further advantageous embodiments of the invention are specified in the subordinate claims.

[0028] The finger orthosis provided is based on the following prior art: A finger orthosis according to the prior art comprises a splint which can be attached to the top or bottom of a finger and runs lengthwise to the finger, the length of which splint corresponds to the length of the finger, and two straps with a locking mechanism, wherein the splint is made of plastic and has two opposite 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 one strap each runs through the two opposite recesses of a free end of the splint and can be firmly locked and released again, in which the strap is blocked at one of its free ends opposite one of the recesses.

[0029] Based on this state of the art, three variants of a new finger orthosis are provided.

[0030] The finger orthosis provided comprises a splint that 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 compared to the prior art as follows:

[0031] The width of the splint [which corresponds to the length of the splint 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.

[0032] This bridge is made of plastic and in the area of ​​its two free ends it merges dichotomously into two ends, each of which has two opposing recesses or tabs, whereby the bands are made of elastic, tensile-resistant plastic or rubber and carry the locking mechanism in which the bands are provided with knobs or notches on one side of the surface and the shape of the free ends of the bands corresponds to the recesses or tabs, by means of which they can be picked up and firmly locked and released again using the knobs or notches (so-called click system).

[0033] In this case, a band (2) runs through the opposite recesses or tabs (11) of one of the two free ends of the web (1') and can be firmly locked and released again by being blocked at one of its free ends opposite one of the recesses or tabs (11),

[0034] As a result, in the received state of each band (2), adjustable eyelets (4) for receiving one or more fingers are pre-formed, the diameter of which can be changed by moving the bands (2) in the recesses or tabs (11).

[0035] The bridge can be slightly narrower and have a recess for resting one finger, or slightly wider and have two recesses for resting two fingers.

[0036] Alternatively, the bridge and one band or the bridge and two bands can be designed as a double loop for two fingers or a single loop for one finger as follows: These two alternatives of the finger orthosis comprise a splint that can be attached to one or two fingers and runs lengthwise opposite the fingers, as well as one or two bands with a closure mechanism, whereby the width of the splint is shorter than a finger joint and forms a bridge that is longer than two finger widths and the bridge can be arranged between two fingers, running lengthwise to the fingers and merges into a band with a closure mechanism on one or both sides.

[0037] In the first embodiment, the web and the band are made of one piece and are made of plastic, with the web being arranged centrally and having one or two recesses and being firmer and harder in consistency than the band.

[0038] The band is elastic and tensile-resistant and has, over at least part of its total length, at least on one side on its surface at a distance from one another, knobs or notches as a locking mechanism, in which part of the band is provided with the knobs or notches and the shape of the free ends of the band corresponds to the recesses, by means of which the band can be picked up and firmly locked and released again using the knobs or notches.

[0039] In this case, the band merges from the web towards its free end into a narrowed part, whereby the width of the narrowed part corresponds to the width of the recess and can therefore be accommodated in the recess in a corresponding manner.

[0040] In the second embodiment (with two bands), each of the two bands merges from the web towards its free end into a narrowed part, wherein the two narrowed parts are opposite in position and not mirror-imaged, and the width of the two narrowed parts corresponds to the width of the recesses and can therefore be accommodated in these recesses in a corresponding manner without the two bands spatially obstructing each other.

[0041] When the band or bands are in the inserted state, one or two adjustable eyelets are pre-formed to accommodate one or two fingers, the diameter of which can be changed by moving the band or bands through the recess or recesses.

[0042] It is also within the scope of the invention that the orthosis is provided with an eyelet with a finger rest in order to fix a finger along its length, or that three orthoses are connected with two small eyelets and a large eyelet with a palm rest in the middle between them in order to fix the thumb and the little finger of one hand with the palm rest.

[0043] It is also within the scope of the invention that, in a further embodiment, a relative motion splint with a spectacle-like shape is provided, which is manufactured without a band or strap and without a recess or tab, in which the two dichotomous ends of the bridge are positively and firmly connected to one another, so that instead of the pincer-like, round shape, a ring shape is formed, which is manufactured specifically for the patient.

[0044] Furthermore, it is also within the scope of the invention that, particularly in the case of lengthy treatments (with or without morphological changes in the patient's fingers), the parts of the finger orthosis can be assembled and exchanged in a modular manner, which leads to further cost minimization.

[0045] The finger orthosis is manufactured by determining, in a first step, the patient-specific data of one or more patient fingers using an optical scanning method according to the state of the art,

[0046] The determined patient-specific data are used in a second step to control and regulate a known injection molding process or to control and regulate a known 3D printing process with the patient-specific data of the web and data for the position of the recesses or tabs on the web in order to print the web from plastic material and thereby generate the recesses or tabs.

[0047] In a third step, the recesses or tabs are finally provided with the band or strap made of elastic but tensile-resistant plastic or rubber, so that adjustable eyelets for accommodating one or more patient fingers are pre-formed and the finger orthosis is ready for use.

[0048] It is also within the scope of the invention that, during the production of the web, specific additives, such as in particular physiologically / medical substances or dyes, can be added to the basic granulate for the plastic in the 3D printing technology.

[0049] The plastic has the following general properties: - flexible, i.e. depending on the orthotic component and physiological-medical effect on the fingers (finger guide, band material, bridge) harder or softer adjustable plastic (this can be adjusted, for example, via the 3D printing process and by selecting from known basic material granules) - robust, durable, - light, - Water, dirt and temperature resistant, - sterilizable (e.g. if the finger orthosis is applied in the operating room), and - visually appealing, with a choice of colors (this can be adjusted by adding dyes during 3D printing).

[0050] Furthermore, the plastic has the following mechanical and modular properties: • Multifunctional applications – covering multiple indications, diseases and injuries (this is possible through patient-specific 3D printing), • Treatment of individual or multiple fingers, • easy to install (both for the patient and the therapist), • comfortable, with high wearing comfort for the patient, • not too smooth (so it doesn’t slip), • Flexible, yet supportive and, if desired, slightly stretchable (this is possible through patient-specific 3D printing) • rounded edges without sharp elevations or “noses” (avoiding injuries, pressure points) and • Wall thickness sufficient to support, not too thick.

[0051] Furthermore, the plastic used to manufacture the finger orthosis has the following physiological and therapeutic properties: • stabilizing, • supporting, relieving, • restoring function, • in stock, • promotes healing and • mobilizing.

[0052] Furthermore, it is also within the scope of the invention that, for cost reasons, the individual components of the finger orthosis are manufactured in different standard sizes using thermoplastic injection molding.

[0053] The more expensive variant of the manufacturing process, which involves scanning the patient's hand to create a 3D model and subsequent 3D printing, is particularly suitable when a special solution or the anatomical conditions require it.

[0054] Associated with the features of the provided finger orthosis are the following advantages: Compared to the state of the art, the technical solution enables a more effective and cost-effective, especially individual, provision of patient-specific finger orthoses, which can be used as: • relative motion splint for the extension of the MCP / middle finger - metacarpophalangeal joint • Pulley protection splint for pulley diseases and injuries • soft ring band protection splint • Block splint for tenosynovitis stenosans (trigger finger) • double ring band protection rail or • A figure-eight loop or combination splint can be used for several fingers, ensuring a good hold / fit while allowing the orthosis to be removed and reapplied multiple times, as well as improved comfort and ease of use for the patient.

[0055] Furthermore, there is the possibility of optimising and varying the provided finger prosthesis in a kind of modular system, which brings the following advantages: - Supply of all and multiple fingers is ensured by a splint structure in the modular principle, for example: → Separate finger rings and finger bridge for individual modulation → Configuration of different bridge lengths → Click system: Components (bridge / finger rings) connect, which leads to - 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

[0056] The invention is explained in more detail below with reference to the embodiments and the figures, without being limited to these.

[0057] Show this: 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 supporting 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 opened 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 opened 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, a large eyelet in between with a palm rest and Fig. 12: a schematic representation of the embodiment according to Fig. 11 when worn on one hand with palm rest and fixation of thumb and no fingers.

[0058] The Fig. Figure 1 shows a finger orthosis according to the prior art. This orthosis comprises a splint (1) which can be attached to the top or bottom of a finger and runs longitudinally along the finger, the length of which splint 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) in the region 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. In each case, a strap (2) runs through the two opposing recesses (11) of a free end of the splint (1) and can be firmly locked and released again. The strap (2) is blocked at one of its free ends opposite one of the recesses (11).

[0059] Based on this state of the art, three variants of a new finger orthosis are provided, which are Fig. 2a, Fig. 2 b, as well as 4 and 7.

[0060] The Fig. 2a and Fig. 2b and the first embodiment shown in the Fig. The second embodiment of the finger orthosis shown in Figure 4 comprises a splint (1) which can be attached to at least one finger and runs longitudinally relative to the fingers, as well as two straps (2) with a locking mechanism (3), which are modified from the prior art as follows:

[0061] The width of the rail (1) [which corresponds to the length of the rail (1) according Fig. 1] is shorter than a finger joint and forms a bridge (1') which can be arranged between two fingers and is longer than two finger widths.

[0062] This web (1') is made of plastic and, in the area of ​​its two free ends, merges dichotomously into two ends each having two opposing recesses or tabs (11), wherein 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 with the knobs or notches (21) on one side of the surface and the shape of the free ends of the bands (2) corresponds to the recesses or tabs (11), by means of which they can be picked up and firmly locked and released again using the knobs or notches (21). In this case, a band (2) runs through the opposite recesses or tabs (11) of one of the two free ends of the web (1') and can be firmly locked and released again by being blocked at one of its free ends opposite one of the recesses or tabs (11),

[0063] As a result, in the received state of each band (2), adjustable eyelets (4) for receiving one or more fingers are pre-formed, the diameter of which can be changed by moving the bands (2) in the recesses or tabs (11).

[0064] The embodiment according to the Fig. 2 differs from the embodiment according to the Fig. 4 in particular in that the web (1') in Fig. 2 is slightly narrower (and has a recess for supporting a finger) than the bridge (1') in the Fig. 4 (with two recesses for resting two fingers).

[0065] In Fig. 7 (double loop for two fingers) and Fig. 9 (single loop for one finger) shows the designs of two further variants of the finger orthosis with two eyelets or one eyelet for the finger holder.

[0066] These two embodiments of the finger orthosis comprise a splint (1) which can be attached to one or two fingers and runs longitudinally opposite the fingers, as well as two bands (2) with a closure mechanism (3), wherein the width of the splint (1) is shorter than a finger joint and forms a web (1") which is longer than two finger widths and the web (1") can be arranged between two fingers running longitudinally to the fingers and merges on one or both sides into a band (2') with a closure mechanism (3).

[0067] The web (1") and the band (2') are made of one piece and are made of plastic, with the web (1") being arranged centrally and having a recess [see Fig. 8 and Fig. 9 for the single loop for an eyelet to hold a finger] or two recesses (11) [see Fig. 6 and Fig. 7 with the double loop for two eyelets to accommodate two fingers] and is firmer and harder in consistency than the band (2').

[0068] The band (2') is elastic and tensile-resistant and has, over at least part of its total length, at least on one side on its surface, knobs or notches (21') at a distance from one another as a closure mechanism (3), in which part of the band (2') is provided with the knobs or notches (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 received and firmly locked and released again using the knobs or notches (21).

[0069] For the variant according to Fig. 9 [Single loop for a finger with a band (2')] is on the bridge (1"), this band (2) passes from the bridge (1) towards its free end into a narrowed part, wherein the width of the narrowed part corresponds to the width of the recesses (11) and can therefore be correspondingly received in the recess (11).

[0070] For the variant according to Fig. 7 [Double loop for two fingers with two bands (2') on the left and right side of the bridge (1")] each of the two bands (2') transitions from the bridge (1") towards its free end into a narrowed part, whereby the two narrowed parts are opposite in their position and not mirror-image, and the width of the two narrowed parts corresponds to the width of the recesses (11) and can therefore be accommodated in these recesses (11) in a corresponding manner without the two bands (2') spatially obstructing each other. This design is illustrated in the illustration of the Fig. 6.

[0071] 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 the bands (2) through the recess (11) or the recesses (11).

[0072] The advantage of all three variants is that: - the knobs or notches (21) are arranged on the outside of the band (2; 2') forming the eyelet (4), - the distance between the knobs or notches (21) is regular, - the web (1'; 1") and the band (2; 2') are manufactured from plastic powder using 3D printing or injection molding processes based on patient-specific computer tomography data, - the plastic contains 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 web (1' or 1'') at both its ends merges dichotomously into a pincer-like, round shape, wherein the recesses or tabs (11) are opposite one another and form the eyelets (4) with the bands (2 or 2'), so that a relative motion splint with a spectacle-like shape is formed.

[0073] Within the scope of the invention, a fifth embodiment of the finger orthosis according to the invention also includes the orthosis according to Fig. 9 (closed form with one eyelet) 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 with a palm rest to fix the thumb and the little finger of one hand (see Fig. 12).

[0074] The finger orthosis is thus manufactured in a first step by determining the patient-specific data of one or more patient fingers using an optical scanning method according to the state of the art,

[0075] The determined patient-specific data are used in a second step to control and regulate a known 3D printing or injection molding process with the patient-specific data of the web (1) and data for the position of the recesses or tabs (11) on the web (1) in order to print the web (1'; 1'') from plastic material and thereby generate the recesses or tabs (11). If the band (2') or the bands (2; 2') are not an integral part of the web (1'; 1), the recesses or tabs (11) are finally provided in a third step with the band (2') or the bands (2, 2') made of elastic but tensile-resistant plastic or rubber, so that adjustable eyelets (4) are pre-formed to accommodate one or more patient fingers and the finger orthosis is ready for use.

[0076] It is also within the scope of the invention that, during the production of the web (1'; 1''), specific additives, such as in particular physiologically / medically active substances or dyes, can be added to the basic granulate for the plastic in the 3D printing or injection molding process.

[0077] With the e.g. in Fig. The finger orthosis shown in Figure 2 in the form of a relative motion splint makes it possible to supply one finger (e.g. middle or ring finger) or two fingers (e.g. for positioning the MCP of the ring and middle finger in extension) by means of the multi-adjustable and usable adjustment mechanism with the flexible straps (2) that can be adjusted in length (for fixation for different finger circumferences), whereby the flexible plastic of the bridge (1) has sufficient stability in the area of ​​the finger notch.

[0078] It is also within the scope of the invention that the finger orthosis is provided in the form of a flexible Relative Motion Splint, individually manufactured by 3D printing or injection molding, with a “glasses-like” shape, which is made without a band (2; 2') (ie without adjustment options) of elastic plastic with a notch as a finger guide and two insertion holes for the fingers [instead of, for example, the holes in the Fig. 2 and Fig. 4 visible pincer-like, round dichotomous ends of the bar (1'; 1'') with the eyelets (4)] (in which the two dichotomous ends of the bar (1) are positively and firmly connected to each other) and offers the possibility of patient-specific care of one finger at a time (e.g. middle or ring finger) (not shown in the figures).

[0079] It is also within the scope of the invention that in a further embodiment a Relative Motion Splint with a spectacle-like shape is provided, in which, as in e.g. in the Fig. 7, a provided finger orthosis is designed 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 finger), in which the web (1', 1'') is shortened to such an extent that its two dichotomous ends with the multiply adjustable and usable closure system which forms the adjustable finger loops are arranged directly next to each other, but nevertheless slightly spaced 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 ranges of the finger length (also twice).

[0080] Furthermore, it is within the scope of the invention that, particularly in the case of lengthy treatments (with or without morphological changes in the patient's fingers), the parts of the finger orthosis can be assembled and exchanged in a modular manner, which leads to further cost minimization.

[0081] The use of the finger orthosis described above is therefore very diverse, for example as an early mobilization, blocking or relief splint for a patient's fingers, or as a relative motion splint.

[0082] Key applications include • Relative Motion Splint (1 finger), where the middle or index finger is supported, • Relative Motion Splint (2 fingers), which supports the middle and ring fingers, • Ring band protection (1 finger), where 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.

[0083] The advantage of all embodiments of the provided finger orthosis lies in its flexible, multifunctional and modular properties, which can be manufactured based on the specific data collected from a patient using 3D technology in a patient-specific, cost-effective manner and at the same time offers high and individually adjustable wearing comfort, as well as being robust, durable, lightweight and visually appealing.

[0084] Furthermore, the provided finger orthosis allows for the treatment of single or multiple fingers, is easy to install for the patient and therapist, and once applied, is comfortable for the patient, does not slip, and is flexible, supportive and easily stretchable.

[0085] All features presented in the description, the exemplary embodiments and the following claims can be essential to the invention both individually and in any combination with one another. Reference symbol 1 rail 1'; 1'' bridge 11 Recess or tab 2, 2' volume 21 studs or notches 3 locking mechanism 4 eyelets 5 Finger rest on the bridge 6 Palm rest, springing from the bridge with three eyelets QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 000004600618 A

[0013] FR 000002860707 A1

[0015] CN 000214805854 U

[0017] CN 000213851309

[0019] Cited non-patent literature

[0000] 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

[0005] Mottay, N. & Govender, P. & Mpanza, D. (2020

[0006] https: / / www.orfit.com / physicalrehabilitation / blog / splint-in-the-spotlight-relative-motion-orthosis

[0007] https: / / premium-therapie.de / de / schienenmaterial / thermoplastisches-schienenmaterial? next_page=2

[0011] Quelle: https: / / silversplints.de / modelle / rms-relative-motion-splint-5049

[0023]

Claims

[1] Finger orthosis comprising a splint (1) which can be attached to at least one finger and runs longitudinally relative to the fingers, as well as two straps (2) with a locking mechanism (3), characterized by , that - the width of the splint (1) is shorter than a finger joint and forms a web (1') which can be arranged between two fingers and is longer than two finger widths, - the web (1') is made of plastic and, in the area of ​​its two free ends, merges dichotomously into two ends each, 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 with the knobs or notches (21) on one side of the surface and the shape of the free ends of the bands (2) corresponds to the recesses or tabs (11), by means of which they can be picked up and firmly locked and released again with the help of the knobs or notches (21), wherein a band (2) each runs through the opposite recesses or tabs (11) of one of the two free ends of the web (1') and can be firmly locked and released again 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 runs longitudinally opposite the fingers, as well as a band (2) or two bands (2) with a closure mechanism (3), characterized by , that - the width of the splint (1) is shorter than a finger joint and forms a web (1'') that is longer than two finger widths, - that the web (1'') can be arranged between two fingers running lengthwise to the fingers and merges on one or both sides into a band (2') with a closure mechanism (3), - the web (1'') and the band (2') are one-piece and made of plastic, - the web (1'') is arranged centrally 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 carries, over at least part of the total length, at least on one side on its surface at a distance, knobs or notches (21') as a closure mechanism (3), in which part of the band (2') is provided with the knobs or notches (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 received and firmly locked and released again with the aid of the knobs or notches (21), wherein - in the case of a band (2') on the web (1''), this band (2) merges from the web (1) towards its free end into a narrowed part and the width of the narrowed part corresponds to the width of the recesses (11) and can therefore be correspondingly received in the recess (11), or - with one band (2') each on the left and right of the web (1''), each of the two bands (2') transitions from the web (1'') towards its free end into a narrowed part, the two narrowed parts being opposite in position and not mirror-image, and the width of the two narrowed parts corresponding to the width of the recesses (11) and thus being able to be accommodated in these recesses (11) in a corresponding manner without the two bands (2') spatially obstructing each other, so that in the received state of the band (2') or the bands (2') one or two adjustable eyelets (4) are pre-formed for receiving one or two fingers, the diameter of which can be changed by moving the band (2') or the bands (2) through the recess (11) or the recesses (11). [3] Finger orthosis according to claim 1 or 2, characterized by that the knobs or notches (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 knobs or notches (21) is regular. [5] Finger orthosis according to claim 3 and 4, characterized by that the web (1', 1'') and the band (2; 2') are manufactured from plastic powder using 3D printing or injection molding processes based on patient-specific computer tomography data. [6] Finger orthosis according to one or more of claims 1 to 5, characterized by that the plastic contains active ingredients that 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 web (1'; 1'') at each of its two ends merges dichotomously into a pincer-like, round shape, wherein the recesses or tabs (11) lie opposite one another and form the eyelets (4) with the bands (2 or 2'), so that a relative motion splint with a spectacle-like shape is formed.

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