Reversible relative motion finger orthosis

Abstract

The invention relates to a relative range of motion finger orthosis used in conditions such as extensor tendon repair, sagittal band injury, buttonhole deformity, and middle finger joint stiffness. The aim is to provide an orthosis that does not require custom molding, is produced in ready-made sizes, and can be used as both an extension and flexion orthosis in a single piece. The orthosis (1) consists of a ring (2) that wraps around one joint of the affected finger and has an opening (3), and two wings (4) that extend from the ring (2) in opposite directions and rest on adjacent fingers. The flat contact surfaces (5) of the wings (4) lie in a single plane parallel to the ring axis, and the orthosis is symmetrical with respect to two planes of symmetry. When the wings (4) are placed on the back of the hand of adjacent fingers, a relative range of motion extension orthosis is obtained; when the orthosis is rotated 180° around the ring axis and the wings (4) are placed on the palm surface, a relative range of motion flexion orthosis is obtained.The same orthosis can be used on both the right and left hands; the zero-offset design is used at the mid-joint level.

Description

TARIFF Reversible relative motion finger orthosis Technical Area The invention relates to the metacarpal-finger joint of a finger, used in hand surgery and hand rehabilitation. (metacarpophalangeal joint, MCP) or middle finger joint (proximal interphalangeal joint, PIP) at this level, in a different flexion-extension position compared to adjacent fingers It is related to relative motion orthosis, which provides support. The invention specifically involves creating a relative motion opening orthosis (relative motion) by reversing a single part. Extension orthosis; relative motion extension orthosis (RMEO) as well as relative motion bending orthosis (relative motion flexion orthosis, RMFO) It can be used, is produced in ready-made sizes without requiring custom molding, and has a ring in the middle. This is an orthosis consisting of two wings extending to either side, thus resembling a propeller. It relates to an orthosis kit consisting of orthoses and a size selection device. State of the Art Relative range of motion orthoses allow the affected finger to move approximately 15° to 25° relative to adjacent fingers. It is based on the principle of holding it in a more open or bent position. In this way, the repaired or damaged area By reducing the load on the developed structure, the fingers become active in the early stages. Their use is permitted. Relative motion opening orthoses (RMEO) are primarily used for the extensor beam (opening tendon). tendon) repairs and sagittal band injuries (the band that holds the tendon in the middle of the joint) In various situations, including those involving relative motion flexion orthoses (RMFOs), the buttonhole... (boutonnière) deformity, middle finger joint flexion stiffness (flexion contracture), after extension loss (extensor lag) and flexor tendon repairs (Hirth MJ, Howell JW, O'Brien L. Relative motion orthoses in the management of various hand conditions: a scoping review. Journal of Hand Therapy. 2016;29:405-432). These orthoses are traditionally made from thermoplastic (heat-moldable) sheets or from the tapes, applied one by one on the patient's hand by a hand therapist (hand rehabilitation specialist). It is manufactured by shaping. In known structures, the orthosis is made from one side of the affected finger and with a band that passes across the opposite side of adjacent fingers or a sleeve that wraps around the finger in question. It consists of wings that extend from the cuff to adjacent fingers. The wings connect the patient's adjacent fingers. Because they are molded to fit the shape, these orthoses are only suitable in the position in which they are made (opening or closing). (bending), can be used in the hand and on the patient in which they are made; reversed and used for other functions or It cannot be used on another patient. Furthermore, the production of each orthosis requires expertise, special materials, and time. It requires. In centers where access to hand surgeons and hand therapists is limited, patients may have difficulty reaching a specialist or Immobilizers, which usually keep the fingers completely immobile until an appointment is made. They are in (static) splints. Prolonged complete immobilization leads to joint stiffness, tendon adhesion, and This increases the risk of permanent loss of movement. Therefore, a hand therapist should be consulted in the emergency room or outpatient clinic. 1 35 a relative motion that, although not yet available, can be implemented immediately and requires no molding or adjustment. An orthosis is needed. On the market, there are silicone-coated braids that are applied by braiding them up and down between the fingers and locking at the ends. Ready-made relative mobility orthoses based on metal strips are available. The application of these orthoses and Adjusting the relative position between the fingers requires knitting and locking skills, in the hand The angle obtained varies depending on the practitioner. In the study by Okumuş and his colleagues (Okumuş FS, Sığırtmaç İC, Arslan ÖB et al. Journal of Hand Therapy (2026) is a 3D printed device, 240 mm long, 13 mm wide and 2 mm thick, knitted between the fingers and placed in channels along the edges. A universal band-type relative motion orthosis shaped by hand twisting copper wires. It is defined. In this solution, the relative angle depends on the bending of the wire by the installer, and A therapist is required for the application. Patent document number US6110136A describes a spring that sits under the joint of a single finger. It consists of a shaped base and an oval piece that wraps around the back of the finger, and can be rotated 180° to alternate between them. A finger splint that can be used in one position has been described. This splint is applied to a single finger. and does not position the relevant finger relative to the adjacent fingers. Numbered EP2087863B1 The document describes a system consisting of two ring arches and a bridge connecting them, with a diameter that can be adjusted by bending. and a finger orthosis that can be used in both the right and left hands has been described; in this orthosis, adjacent fingers There is no supporting structure and no relative motion function. (Document number US6561995B1) a multi-fingered splint system consisting of a base that fits the palm and finger channels It is defined as such, and this system is not a relative motion orthosis. In conclusion, the known technique involves opening as a single piece that does not require custom manufacturing. It is both a bending orthosis and can be used in both hands, its relative position being that of the part itself. a ready-made series of sizes, determined by its geometry and independent of the installer A relative motion orthosis is not available. Purpose of the Invention The invention aims to create a custom molding, heating, or adjustment tool that is suitable for hand surgeons and hand therapists. a relative ability that can be quickly implemented by physicians and healthcare professionals outside of the medical field. The purpose of the movement is to provide finger orthosis support. Another aim of the invention is to rotate a single piece 180° around the ring axis, thereby both relative to the surrounding area. As both a range of motion orthosis and a relative range of motion bending orthosis, also for the right and left hand. The aim is to enable the use of adjacent wings by ensuring that the contact surfaces of the wings are flat. The diameter of the fingers does not affect the fit of the orthosis; thus, the same orthosis can fit, for example, the third finger. (neighbors of the second and fourth fingers) and in the fourth finger (neighbors of the third and fifth fingers) (finger) can be used. 2 35 Another aim of the invention is to determine the relative position between the finger in question and the adjacent fingers. the geometry of the orthosis is determined regardless of the practitioner's skill, and thus The goal is to obtain a repeatable relative angle. Another objective of the invention is to connect the adjacent finger at the level of the middle joint (middle phalanx region) of the relevant finger. with a zero-offset structure that ensures the finger mid-joint is held at the same level as the fingers. The goal is to ensure that the movement of adjacent fingers is transferred to the affected finger in cases of restricted flexion. Another purpose of the invention is to create beveled edges, widened ring mouths, and a tapered and flexible shape towards the tip. Thanks to the radii at the junction of the wings, it reduces skin pressure and easily adapts to changes in swelling (edema). The goal is to provide a comfortable orthosis that can be switched to another size. Another aim of the invention is to produce custom orthoses using additive manufacturing (3D printing). In standard printers that do not require hardware and without a support structure, a single unit covers the entire size range. It can be produced on the printing table at low cost and the appropriate length can be measured with a length selection device. The goal is to enable selection without having to choose. Another aim of the invention is to keep patients completely immobile for extended periods until they can reach a specialist. by allowing the joint to be monitored with a ready-made orthosis that allows controlled movement instead of splints The aim is to contribute to reducing the risk of hardening. Explanation of the Figures The diagrams prepared to better understand the orthosis that is the subject of this invention are explained below. Figure 1: Perspective view of the orthosis that is the subject of the invention. Figure 2: Front view of the orthosis along the ring axis. Figure 3: Schematic view of the orthosis's position on the hand, viewed from the back of the hand (dorsal side). Figure 4: Lateral view of the relative angle between the affected finger with the orthosis and the adjacent finger. This is a schematic view. Figure 5: Relative range of motion of the orthosis in the opening orthosis position, front view including finger cross-sections. It is the appearance. Figure 6: Relative movement obtained by rotating the orthosis 180° around the ring axis (bending). This is a frontal view of the finger sections in the orthosis position. Figure 7: Enlarged view of the BB section shown in Figure 2. Figure 8: Front view of the orthosis's zero-offset (distal) structure, including finger cross-sections. It is the appearance. Figure 9: Front view of an orthosis set consisting of orthoses of different sizes. Figure 10: Perspective view of the height selection device. Figure 11: Orthoses and height selection devices on a layered manufacturing printing plate. This is a top-down view of the settlement. Explanation of References in Figures The parts and sizes shown in the figures are numbered or lettered. The corresponding answers are given below. 3 35 1: Orthosis 2: The Ring 3: Clarity 4: Wing 5: Contact surface 6: Radius of junction 7: Wingtip 8: Pah 9: Mouth widening 10: Height symbol 11: Wing outer surface 12: Orthosis set 13: Height selection device 14: Proximal test ring 15: Distal trial ring 16: Label 17: Hanging hole 18: Direction sign 19: Printing table A: Ring axis E: Contact plane S1: Plane of longitudinal symmetry S2: Plane of transverse symmetry R: Inner radius of the ring. d: Offset distance W: Orthosis width L: Distance from the ring axis to the comb-finger joint. α: Relative angle F: The relevant finger K: Adjacent finger D: Dorsal (back of hand) direction BB: Section line Detailed Description of the Invention The subject of the invention is a relative motion finger orthosis (1), one-piece as shown in Figure 1 and Figure 2. It is produced in the form of a ring (2) surrounding one joint of the relevant finger (F) and from the ring (2) It consists of two wings (4) that extend in two opposite directions. The middle ring (2) and the wings that extend to the sides. (4), orthosis (1) resembles a propeller when viewed from the front. In this specification, "joint" The term refers to the area between the two joints of a finger, consisting of bone and the surrounding soft tissue and skin. 4 35 It indicates the part that is formed; "first node" refers to the proximal phalanx region, and "middle node" refers to the middle phalanx. It refers to the region. The ring (2) wraps around this part of the finger through the skin. The ring (2) has a ring axis (A) that coincides with the long axis of the relevant finger (F). The ring (2) Its inner surface is cylindrical, and its inner radius (R) is between 0.2 mm and 0.5 mm from the radius of the relevant finger at that level. between mm, preferably about 0.3 mm larger. The wall thickness of the ring (2) is between 2 mm and 3.5 mm. between mm, preferably approximately 2.8 mm. The width of the orthosis (1) along the ring axis (A) (W), in the configuration used for the first joint (proximal phalanx region), is between 8 mm and 15 mm, Ideally, it is approximately 12 mm. The ring (2) is located on the opposite side of the wings (4) and on the plane of longitudinal symmetry (S1). It is C-shaped with an opening (3). The width of the opening (3) is between 4 mm and 8 mm, preferably approximately The opening (3) is 6 mm, allowing the ring (2) to flex and pass over the middle joint of the finger and It allows tolerance of small differences in finger diameter and swelling. The ends of the opening (3) It is rounded. The wings (4) extend perpendicular to the ring axis (A) and in opposite directions. The wings (4) They have flat contact surfaces (5) on the faces facing adjacent fingers (K). Both wings (4) The contact surfaces (5) lie on a single contact plane (E) parallel to the ring axis (A). Since the surfaces (5) are flat, regardless of the diameter and cross-sectional shape of the adjacent finger (K), the adjacent The finger (K) rests on the contact plane (E); the fit of the orthosis (1) depends on the size of the adjacent fingers. It is not. The position of the contact plane (E) relative to the ring axis (A), the finger in question (F) and the adjacent fingers (K) It determines the relative position between the contact surfaces (5) and the inner radius of the ring (2). (R) Considering a virtual adjacent finger cylinder with equal radii, the axis of this cylinder is the ring It is shifted by an offset distance (d) in the direction perpendicular to the contact plane (E) from its axis (A) (Figure 5). The distance between the ring axis (A) and the contact plane (E) is denoted by h and the wings of the ring If (4) is assumed to be positive, the relation d = R − h is valid. Offset distance (d) is the relative angle obtained between the finger in question (F) and the adjacent fingers (K). (α) is selected according to (Figure 4). Let L be the distance of the ring axis (A) from the comb-finger joint, offset The distance is approximately determined by the relation d = L·tan(α) + e, where e represents the elongation of the material. and to accommodate the compression of soft tissue, between 0.3 mm and 1.0 mm, preferably around 0.7 It is a margin of mm. The relative angle (α) is chosen between 10° and 30°, preferably between 15° and 25°. L The offset value is taken between 20 mm and 35 mm depending on the length. For example, for L = 28 mm and α = 20°, the offset is... The offset distance (d) is approximately 10.9 mm. The offset distance (d) is between 3 mm and 18 mm, with the preferred size. In the series, it is between 8.5 mm and 11.5 mm. In the orthosis set (12), the L value is taken in proportion to the height. (Table 1). The orthosis (1) has a plane of longitudinal symmetry that includes the ring axis (A) and is perpendicular to the plane of contact (E). (S1) and is essentially symmetrical with respect to the transverse symmetry plane (S2) perpendicular to the ring axis (A) (Figure 2 and Figure 7). Thanks to this symmetry, the orthosis (1) can be used in the ways described below. 35 In the relative motion opening orthosis (RMEO) position (Figure 3 and Figure 5), the wings (4) are on the back of the hand (D) It is located on the side and the contact surfaces (5) sit on the back of the hand of the adjacent fingers (K). The finger (F) is held on the back of the hand by an offset distance (d) relative to the adjacent fingers; thus the relevant The metacarpal-finger joint of the finger is in a more open position relative to the adjacent fingers by an angle (α). remains (Figure 4). With the relative motion bending orthosis (RMFO) in position (Figure 6), the orthosis (1) around the ring axis (A). It is rotated 180°; the wings (4) pass to the palm side and the contact surfaces (5) are adjacent. The fingers (K) sit on the palm surface. The offset distance of the relevant finger (F) relative to the adjacent fingers. It is held on the palm side by (d) and remains in a more bent position by a relative angle (α). Thanks to the longitudinal plane of symmetry (S1), the orthosis (1) is used in the same way on the right and left hands; transverse Thanks to the plane of symmetry (S2), it does not matter which end of the orthosis (1) faces the fingertip. Thus, a single orthosis (1); right hand opening, left hand opening, right hand bending and left hand bending orthosis available. The distance of the wingtips (7) from the ring axis (A) is 2.8 to 3.4 times the inner radius (R) of the ring (2). among them; in the preferred configuration, the wingtip (7) is approximately 3.09 times the corresponding finger radius. It is at a distance. Thus the wing (4) goes over the back of the adjacent finger (K) but does not extend into the next finger. And wing length varies proportionally with height. The thickness of each wing (4) decreases from the root where it is attached to the ring (2) to the wingtip (7); preferred In the resulting structure, the thickness at the root is approximately 2.8 mm, and the thickness at the wing tip (7) is approximately 1.8 mm. The thickness at the wingtip (7) is between 50% and 80% of the thickness at the root. Thinning It is made only on the outer surface of the wing (11), the contact surfaces (5) remain flat. The tapered wingtip (7) It flexes to conform to the adjacent finger and distributes the pressure. Where the wings (4) join to the ring (2) In the regions, the inner corners are joined with radii (6), preferably with a radius of approximately 1.5 mm. It is rounded; the outer corners are also preferably rounded with a radius of approximately 0.6 mm. As shown in Figure 7, both the ring (2) and the wings (4) are in the direction of the ring axis (A). Bevels of between 0.3 mm and 1.0 mm, preferably around 0.6 mm, on the inner and outer surfaces at the end edge. (8) is found. Also, at both ends of the inner surface of the ring (2), along the ring axis (A) 1 mm to 4 between mm, preferably at a distance of approximately 2 mm, radially to the tip between 0.2 mm and 1.0 mm. Between them are funnel-shaped mouth expansions (9) that preferably widen to about 0.45 mm. Bevels (8) and mouth expansions (9), ring edge to the skin during finger movement and in the presence of swelling It prevents it from sinking. On the outer surface of at least one of the wings (4) (11), a mark indicating the length of the orthosis (1) and preferably 0.3 mm. The height mark (10) consists of a letter or number embedded 0.8 mm deep. The heights are also They can be distinguished by being produced in different colors. Figure 8 shows the zero-offset (distal) configuration of the invention. In this configuration, the contact plane (E) is located at a distance from the ring axis (A) of the inner radius (R) of the ring (2), the wings (4) of the ring (2) It is tangent to the inner surface on the side; therefore, the offset distance (d) is zero. The orthosis (1) is relevant It is attached to the middle joint of the finger (middle phalanx region) and the finger in question (F) is held together with the adjacent fingers (K) 6 35 It keeps them at the same level. When adjacent fingers are bent, the wings (4) are on the middle and tip of the relevant finger. This structure directs the section to bend together. This arrangement is particularly important for flexion of the middle finger joint. in cases of limitation, orthoses made of heat-molded plastic by hand therapists, such as sleeves and winged orthoses It is used as a ready-made equivalent. In distal configuration, orthosis width (W) proximal It is smaller than that in the configuration; between 5 mm and 10 mm, preferably around 8 mm. The offset is zero. The structure that exists is also at the level of the first joint, where the finger is kept in the same plane as the adjacent fingers. in necessary situations (for example, to prevent the finger from rotating around its own axis) available. The orthosis set (12) shown in Figure 9 consists of at least three, preferably six rings (2) with different inner radii. It consists of an orthosis (1) in the preferred configuration. The orthosis set (12) is available in six sizes as given in Table 1. It includes the proximal orthosis (1) and the distal orthosis (1) corresponding to each size. Between consecutive sizes The difference in the inner circumference of the ring (2) is between 3 mm and 5 mm; thanks to the opening (3) and the flexibility of the material. Each size tolerates an approximate difference in circumference of ±2 mm. Swelling may occur in the early postoperative period. You can start with a larger size; as the swelling decreases, switch to a smaller size. Table 1: Preferred size series of orthosis set (α = 20°) Length First joint circumference (mm) Inside the circle radius R (mm) Offset distance d (mm) Proximal wingspan (mm) Middle node circumference (mm) Distal wing opening (mm) XS 52 8.6 8.5 51 46 45 S 56 9.2 9.1 55 50 49 M 60 9.8 9.7 59 53 52 L 64 10.5 10.3 63 56 55 XL 68 11.1 10.9 67 60 59 XXL 72 11.8 11.5 71 64 63 The size selection apparatus (13) shown in Figure 10 has a label (16) for each size and a label (16) next to it is a proximal trial ring corresponding to the proximal orthosis ring (14), other next to it is a ring corresponding to the distal orthosis and smaller than the proximal trial ring (14) It includes a distal trial ring (15). The trial rings (14, 15) are the same inner ring (2) as the ring (1) of the corresponding orthosis. It has the same radius (R) and opening (3) and is made of the same material; thus the test ring, It accurately reflects the fit of the orthosis on the finger. The size mark (10) on the label (16) is the label's hanging hole (17) which allows it to be strung on a keyring ring and which trial ring Arrow-shaped directional markers (18) are found to indicate which is proximal and which is distal. For all sizes The size selection devices (13) are arranged in a ring and are similar to the ring gauges used by jewelers. They are stored together in this way; the appropriate size trial rings are placed on the finger and measured with a measuring tape or caliper. It is determined in seconds without requiring any further action. Orthosis (1) and height selection device (13), preferably one-piece of semi-rigid thermoplastic polyurethane (TPU). It is produced in this form. The hardness of the material is between Shore D 55 and 75; thus the ring (2) fits the finger. It can be flexible when fitted, but provides the rigidity to maintain the offset distance (d) during use. Semi-rigid thermoplastic polyurethane, polylactic acid (PLA), or polyethylene terephthalate in the hardness range 7 It is more flexible than rigid polymers like glycol (PETG); it does not break, applies less pressure to the skin, and It allows the ring to be fitted by stretching it through the opening (2) (3). On the other hand, Shore A 85 to 95 Since it is more rigid than soft thermoplastic polyurethanes, the offset distance (d) It protects under load. Thanks to its semi-rigid structure, the yarn does not twist or compress during feeding; therefore Direct drive extruders required for soft thermoplastic polyurethanes and Automatic multi-thread feeding systems without the need for special conditions such as low printing speed. (multi-material feeder) is also used quickly and reliably in standard 3D printers. It is printable. In trial applications of the invention, orthoses were made using fused filament. semi-rigid thermoplastic polyurethane yarn produced in a 3D printer using the fabrication method. It is manufactured using (filament). Since the profile of the orthosis (1) is fixed along the ring axis (A) The orthosis is positioned so that the ring axis (A) is perpendicular to the printing plate (19), i.e., its profile is parallel to the plate. It is pressed; in this position, no support structure is needed and the inner surface of the ring comes out smooth. Bevels (8), It can be created in small increments compatible with the printing layers, as shown in Figure 11. Six sizes of proximal orthosis (1), six sizes of distal orthosis (1) and six sizes of selection apparatus (13) in a single print It can be produced together on the table (19). The orthosis dimensions are parametrically determined by the movement around the finger. Calculations are made using a computer model; this model can be used to calculate intermediate sizes, child sizes, or sizes other than those in Table 1. Additional orthoses for very large sizes and different relative angles (α) can be easily fitted while maintaining the same ratios. It can be produced. Orthosis (1) is also produced by injection molding method and polyethylene terephthalate glycol (PETG), polyamide It can also be produced from other polymers such as (PA) or thermoplastic elastomer; if desired, the inside of the ring (2) A soft primer can be added to the surface. Before use, the appropriate size is determined with the size selection device (13). For relative range of motion opening orthosis. orthosis (1) wings (4) to be placed on the back of the hand; for relative movement bending orthosis, ring axis (A) is rotated 180° around and held so that the wings (4) are in the palm. Through the ring (2) opening (3) It is stretched and passed through the fingertip, and the first joint in the proximal structure, and the distal structure It is shifted to the level of the mid-joint. The orthosis (1) does not require an additional fastening element; the wings (4) are adjacent By resting on the fingers, it prevents the orthosis from rotating and maintains its relative position. Application includes heating. Because it does not require molding or cutting, it can also be used in centers that do not have hand surgeons or hand therapists. It can be done immediately. The dimensions given above are examples only and do not limit the scope of protection of the invention. Relative angle (α), height number, orthosis width (W), opening (3) width and material, without deviating from the basic principle of the invention It is interchangeable. The ring (2) can also be produced without an opening (closed). How the invention can be applied to industry. The subject of the invention is an orthosis (1), orthosis set (12) and height selection device (13); layered production or injection molding. They can be mass-produced using molding methods and are used in hospitals, emergency departments, orthopedics and hand surgery. They can be provided as ready-to-use sets for use in polyclinics and physical therapy and rehabilitation units. Additionally, the digital model files of the orthoses were used on a 3D printer located in the healthcare facility. The required size can be produced on-site. Therefore, the invention is applicable to industry. 8 35

Claims

REQUESTS 1. Holding one finger in a different bending-opening position compared to neighboring fingers. The feature of which is a relative movement finger orthosis (1) is that it provides a joint of the relevant finger (F). a ring (2) surrounding and having a ring axis (A), perpendicular from the ring (2) to the ring axis (A) and Two wings (4) extending in two opposite directions and resting on adjacent fingers (K) and the wings (4) are the same a single contact plane (E) located on the faces facing the side, flat and parallel to the ring axis (A) It includes the contact surfaces (5) on which the orthosis (1) includes the ring axis (A) and the contact a longitudinal symmetry plane (S1) perpendicular to the plane (E) and a transverse symmetry plane perpendicular to the ring axis (A) Being essentially symmetrical with respect to the plane of symmetry (S2), the contact surfaces (5) of adjacent fingers (K) Relative range of motion extension orthosis when placed on the back of the hand, orthosis (1) ring axis (A) rotated 180° around and the contact surfaces (5) of the adjacent fingers (K) palm surface When fitted, it can be used as a relative range of motion flexion orthosis.

2. According to claim 1, the orthosis (1) is characterized by its resting on the contact surfaces (5) and the inside of the ring (2). the contact point of the axis of an imaginary cylinder with radius equal to radius (R) with the ring axis (A) The offset distance (d) over which it slides perpendicular to the plane (E) is between 3 mm and 18 mm.

3. According to claim 2, the orthosis (1) has the following features; offset distance (d), ring axis (A) comb-finger When the distance to the joint (L) is taken between 20 mm and 35 mm, the relevant finger (F) and the adjacent fingers The relation d = L·tan(α) forms a relative angle (α) between 10° and 30° between (K). It is determined according to...

4. According to claim 1, the orthosis (1) has the following feature; the contact plane (E) is inside the ring (2) from the ring axis (A). at a distance of radius (R) and tangent to the inner surface of the ring (2) on the wings (4) side It is necessary that the ring (2) be found and that it be sized to fit on the middle joint (F) of the relevant finger.

5. The orthosis (1) is as in any of the requests 1-4 and its feature is; the ring (2), the wings (4) C has an opening (3) located on the opposite side and on the plane of longitudinal symmetry (S1). It should be in the form of and the width of the opening (3) should be between 4 mm and 8 mm.

6. The orthosis (1) is like any of the requests 1-5 and its feature is that each wing (4) its thickness decreases from the root where it is attached to the ring (2) to the wingtip (7), at the wingtip (7) the thickness should be between 50% and 80% of the root thickness and the contact surfaces (5) should be flat It is to remain.

7. The orthosis (1) is like any of the requests numbered 1-6 and its feature is that the wingtips (7) are rings. The distance to the axis (A) is between 2.8 and 3.4 times the inner radius (R) of the ring (2).

8. The orthosis (1) is like any of the requests 1-7 and its feature is that the inner surface of the ring (2) is on each radially towards the end at a distance of between 1 mm and 4 mm along the ring axis (A) at both ends. The mouth expansions are between 0.2 mm and 1.0 mm (9). 9 9. The orthosis (1) is as in any of the requests 1-8 and its feature is; the ring (2) and the wings (4) On both end edges along the ring axis (A), on the inner and outer surfaces, 0.3 mm to 1.0 mm The reason is that there are bevels (8) between them.

10. The orthosis (1) is like any of the requests numbered 1-9 and its feature is that the wings (4) are attached to the ring (2) The areas where they meet have junction radii (6).

11. The orthosis (1) is like any of the requests numbered 1-10 and its feature is that it has at least wings (4). one of them has an embedded height mark (10) on the outer surface (11) indicating the height of the orthosis (1).

12. The orthosis (1) is like any of the requests numbered 1-11 and its feature is; ring (2) and wings (4), Manufactured from a single piece of thermoplastic polyurethane with a Shore D hardness between 55 and 75. It is the fact that.

13. According to claim 12, the orthosis (1) has the following features; layered production, ring axis (A) printing. It is manufactured perpendicular to its layers and without a support structure.

14. An orthosis set (12) consisting of orthoses (1) as in any of the requests numbered 1-13. Its feature is that the ring (2) contains at least three sizes of orthosis (1) with different inner radii, consecutive sizes The difference in the inner circumference of the ring (2) between them is between 3 mm and 5 mm and the wing (4) of any size its length is proportional to the inner radius (R) of the ring (2).

15. Orthosis set (12) according to claim 14, its feature is; for each size, offset distance (d) as in claim 2. with a proximal orthosis (1) fitted to the first joint and with zero offset as in request 4, ring axis (A) a proximal orthosis whose width in the direction (W) is smaller than that of the proximal orthosis and which is fitted to the mid-joint It includes a distal orthosis (1).

16. The orthosis set (12) according to request 14 or 15 is characterized by having the same ring (2) as the orthosis (1) for each size. At least one test ring (14, 15) having the same inner radius (R) and opening (3), test ring (14, 15) a label (16) bearing the size mark (10) and the label (16) on a ring It includes a size selection device (13) which includes a hanging hole (17) that allows it to be arranged.

17. According to claim 16, the orthosis set (12) has the following features; a height selection device (13), a label (16) on one side a proximal trial ring corresponding to the first node level (14), on the other side the middle a distal trial ring corresponding to the level of the node and small of the proximal trial ring (14) Direction signs (18) showing trial rings (14, 15) on ring (15) and label (16) It includes.

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