Description:.

SPLINT FOR A HAND

Field of the Invention

The present disclosure generally relates to medical devices. Particularly, the present disclosure relates to a hand orthosis designed for dynamic digit support and rehabilitation.
Background
The background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
Orthotic devices have been developed to support, align, restrict, or correct deformities, or to improve the function of movable parts of the body. Specifically, hand orthosis are designed to treat various conditions of the hand and wrist by stabilizing or immobilizing these anatomical structures, facilitating healing, and improving functional performance. Traditional hand orthosis typically include static or dynamic systems that either restrict movement or allow controlled motion through mechanical means such as springs, wires, or rigid frames.
One common problem with conventional hand orthosis is the lack of adaptability to accommodate varying levels of support needed during different stages of recovery or according to the specific requirements of the user’s daily activities. Moreover, most hand orthosis are constructed as separate pieces that require complex assembly or adjustment, which can be cumbersome and time-consuming for both patients and healthcare providers.
Another issue is that many orthosis are designed to provide a uniform force or resistance, which does not always align optimally with the anatomical and biomechanical properties of the hand. This can lead to suboptimal support, discomfort, or even further injury. Additionally, the rigidity and bulkiness of traditional designs often restrict the natural movement of the hand and wrist, making them impractical for prolonged use, especially during various activities requiring finer motor skills.
The aforementioned limitations highlight a need for an improved hand orthosis that offers adjustable tension and support in a design that is both user-friendly and versatile. Such a device would ideally allow for easy customization of the support level and fit, adapt to the specific contours and movements of the user’s hand, and provide targeted force to assist with movement or correct deformities while maintaining comfort and allowing for natural hand functions.

Summary
The following presents a simplified summary of various aspects of this disclosure in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements nor delineate the scope of such aspects. Its purpose is to present some concepts of this disclosure in a simplified form as a prelude to the more detailed description that is presented later.
The following paragraphs provide additional support for the claims of the subject application.
In an aspect, the present disclosure aims to provide a hand orthosis that includes a unified forearm and palm casing (U-FPC). The U-FPC is designed to be releasably secured to a forearm and to encase a digit. The casing includes an integrated rail system that facilitates the movement and locking of tension module securing points. These points are aligned optimally with a joint of the digit, enhancing the device's functionality and user convenience.
In an embodiment, a tensioning mechanism is incorporated, which consists of a set of interchangeable tension modules. Each module features an elastic element with varying rigidity levels and is selectively connectable to the U-FPC. The tension module extends between a proximal first end attached to the U-FPC and an opposite distal second end. Each elastic element of the tension modules is maintained at a first point and a second point on the casing. Both points are adjustable along the rail and can be locked at positions spaced apart to span a joint of the digit. Furthermore, each elastic element delivers a variable force that adjusts according to the degree of flexion and extension of the digit. The force is adequate to counteract but not inhibit bending of the digit such that when the digit is flexed from an extended posture toward a flexed posture, the elastic element bends with the digit and prompts the digit toward the extended posture.
In an embodiment, the hand orthosis further comprises the tensioning mechanism being slidable relative to the U-FPC. This movement is facilitated by enhanced low-friction rail components integrated within the rail. These enhancements contribute to movement fluidity and reduce abrasion, improving both the durability and the comfort of the orthosis .
In an embodiment, adjustment interfaces are located on the U-FPC. These interfaces enable adjustments by users with reduced hand mobility, providing greater accessibility and ease of use for individuals requiring orthotic support.
In an embodiment, an articulated joint mechanism is incorporated into the U-FPC to mimic the natural articulation of human joints. This feature enhances the natural feel of the device and allows dynamic tension adjustment, thereby improving the overall user experience by making the device feel more like a natural extension of the body.
In an embodiment, an automated tension adjustment system is included, utilizing smart sensors and actuators within the rail system. These sensors and actuators detect the degree of flexion and extension and automatically recalibrate the tension modules. This automation ensures optimal support and comfort for the user throughout varied activities.
In an embodiment, a modular interface for additional support accessories is integrated into the U-FPC. This interface is designed to securely hold additional therapeutic devices, such as heat pads or stimulators. These devices can enhance healing or provide pain relief, adding to the versatility and therapeutic value of the hand orthosis .
In an embodiment, the enhanced low-friction rail components are made from ultra-high molecular weight polyethylene (UHMWPE) or PTFE (Teflon) composites. These materials are selected for their durability and reduced friction properties, which contribute significantly to the longevity and effectiveness of the rail system.
In an embodiment, the enhanced low-friction rail components comprise an energy-harvesting element to harness kinetic energy from joint movements. This innovative feature not only improves the energy efficiency of the device but also potentially provides additional power for the automated systems within the orthosis , enhancing its functionality and user independence.

Brief Description of the Drawings

The features and advantages of the present disclosure would be more clearly understood from the following description taken in conjunction with the accompanying drawings in which:
FIG. 1 illustrates a hand orthosis , in accordance with the embodiments of the present disclosure.
FIG. 2 depicts a prototype hand orthosis designed to offer support and rehabilitative tension to a digit of the hand, in line with the embodiments of the present disclosure.
Detailed Description
In the following detailed description of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown, by way of illustration, specific embodiments in which the invention may be practiced. In the drawings, like numerals describe substantially similar components throughout the several views. These embodiments are described in sufficient detail to claim those skilled in the art to practice the invention. Other embodiments may be utilized and structural, logical, and electrical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims and equivalents thereof.
The use of the terms “a” and “an” and “the” and “at least one” and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The use of the term “at least one” followed by a list of one or more items (for example, “at least one of A and B”) is to be construed to mean one item selected from the listed items (A or B) or any combination of two or more of the listed items (A and B), unless otherwise indicated herein or clearly contradicted by context. The terms “comprising,” “having,” “including,” and “containing” are to be construed as open-ended terms (i.e., meaning “including, but not limited to,”) unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., “such as”) provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.
Pursuant to the "Detailed Description" section herein, whenever an element is explicitly associated with a specific numeral for the first time, such association shall be deemed consistent and applicable throughout the entirety of the "Detailed Description" section, unless otherwise expressly stated or contradicted by the context.
FIG. 1 illustrates a hand orthosis , in accordance with the embodiments of the present disclosure. The hand orthosis (100) is understood to encompass a unified forearm and palm casing (U-FPC) (102) and a tensioning mechanism (104). The unified forearm and palm casing (U-FPC) (102) is designed to be releasably secured to a forearm and to encase a digit. Included in the U-FPC (102) is an integrated rail system that facilitates the movement and locking of tension module securing points. These points are aligned optimally with a joint of the digit, thereby promoting precise control over the mechanical forces exerted by the orthosis .
The term "unified forearm and palm casing (U-FPC)" as used throughout the present disclosure relates to a component manufactured from a durable material capable of encasing the forearm and a digit of a user. The casing includes an integrated rail system. This system provides a track along which securing points for tension modules can be moved and locked. The securing points on the rail system are adjustable to align optimally with the anatomical features of the digit, particularly the joint. The adjustability and lockability of these points support the effective application of corrective forces to the digit.
The tensioning mechanism (104) comprises a set of interchangeable tension modules (106), each featuring an elastic element (108). The term "tensioning mechanism" as used in this context refers to a system integrated within the hand orthosis (100) that permits the application of variable mechanical forces to a digit.
Each interchangeable tension module (106) within the tensioning mechanism (104) is equipped with an elastic element (108). The modules are designed for selective connection to the U-FPC (102) and extend from a proximal first end attached to the U-FPC (102) to an opposite distal second end. The interchangeability of these tension modules (106) allows for the application of different levels of force depending on the rigidity of the elastic element (108) selected. This feature enables the customization of therapy and adjustment to varying rehabilitation needs.
The elastic elements (108) of each tension module (106) are maintained at a first point and a second point on the casing. These points are adjustable along the integrated rail of the U-FPC (102) and can be locked at positions spaced appropriately to span a joint of the digit. Such positioning ensures that the forces exerted by the elastic elements (108) are accurately aligned with the biomechanical axes of the digit.
The unified forearm and palm casing (U-FPC) (102) effectively supports the forearm and encases the digit while allowing for precise placement and adjustment of tension modules. The integrated rail system enhances the functionality of the U-FPC (102) by enabling the optimal positioning and locking of tension module securing points. These features collectively improve the efficacy of the orthosis in providing targeted support and corrective force to the digit.
The tensioning mechanism (104), through its set of interchangeable tension modules (106) with varying rigidity levels, facilitates the customization of therapeutic interventions based on the specific needs of the user. The ability to adjust the position of the elastic elements (108) along the rail allows for fine-tuned control over the force distribution, making the hand orthosis (100) adaptable to various stages of rehabilitation.
The variable force delivered by each elastic element (108) of the tension modules (106) adjusts according to the degree of flexion and extension of the digit. Such variability ensures that the force is adequate to counteract bending of the digit without inhibiting its movement. When the digit is flexed from an extended posture toward a flexed posture, the elastic element (108) bends with the digit and actively prompts the digit toward the extended posture. This dynamic interaction supports the natural movement patterns of the digit while providing the necessary corrective force to aid in rehabilitation.
Optionally, the U-FPC (102) may be constructed from materials that offer enhanced flexibility or rigidity, depending on the requirements of the therapeutic regimen prescribed. Optionally, the rail system could be equipped with sensors to monitor the position and movement of the tension module securing points, providing feedback for therapy adjustments.
An operational example of the hand orthosis (100) includes a patient recovering from tendon surgery. The patient uses the orthosis with tension modules (106) selected for moderate rigidity to assist in the gradual increase of digit mobility. Adjustments to the positions of the elastic elements (108) are made as the patient's range of motion improves, continually aligning the force exerted with therapeutic needs.
A unified forearm and palm casing (U-FPC) (102) is configured to be releasably secured to a forearm and to encase a digit. Said U-FPC (102) includes an integrated rail system. The rail system is designed to facilitate the movement and locking of tension module securing points, which are aligned optimally with a joint of the digit. The arrangement of the rail system within the unified forearm and palm casing allows for precise adjustment of the tension modules. Such adjustment is crucial for adapting the orthosis to different stages of rehabilitation or various anatomical requirements. The ability to easily move and securely lock the tension module securing points on the rail system enhances the functionality of the U-FPC (102). By enabling precise positioning of the tension modules relative to the joint of the digit, said U-FPC (102) contributes to the effective application of necessary forces for therapeutic intervention without inhibiting natural digit movement. The versatility provided by the integrated rail system also allows for quick reconfiguration of the orthosis according to therapeutic progress or changes in treatment strategy. Additionally, the ease of securing and releasing said U-FPC (102) to and from the forearm ensures that the orthosis can be used by patients with minimal assistance, thereby promoting greater independence in managing their rehabilitation. The design of said U-FPC (102) not only facilitates the physical rehabilitation process but also ensures that the application of corrective forces is maintained within the therapeutic parameters necessary for effective treatment outcomes.
The tensioning mechanism (104) of the hand orthosis (100) is comprised of several components that contribute to its functionality and utility in digit rehabilitation. The primary components of said tensioning mechanism (104) include a set of interchangeable tension modules (106), each equipped with an elastic element (108) possessing varying levels of rigidity. These tension modules (106) are designed for selective connection to the unified forearm and palm casing (U-FPC) (102).
Each interchangeable tension module (106) includes an elastic element (108) that spans from a proximal first end attached to the U-FPC (102) to an opposite distal second end. This configuration allows each module to exert a controlled force over a digit of the user, thereby assisting in corrective and therapeutic movements. The adaptability provided by the interchangeable nature of the tension modules (106) enables the hand orthosis (100) to be customized according to the specific rehabilitation needs of different users, accommodating various levels of resistance required during the recovery process.
The elastic elements (108) in the tension modules (106) are maintained at a first point and a second point on the casing. Both points are adjustable along a rail integrated into the U-FPC (102) and can be locked at various positions that are strategically spaced to effectively span a joint of the digit. This feature of adjustability and lockability of the points ensures that the elastic elements (108) are positioned to provide optimal support and force distribution that aligns with the anatomical and biomechanical requirements of the digit.
Furthermore, each elastic element (108) in the tension modules (106) is designed to deliver a variable force that adjusts in response to the degree of flexion and extension of the digit. This variability in force application ensures that the digit is subjected to enough resistance to counteract undesirable bending movements, yet it is not so much as to inhibit natural and therapeutic movements of the digit. Such a balance is crucial for effective rehabilitation as it enables the digit to move from an extended posture toward a flexed posture and vice versa, with the elastic element (108) bending with the digit and encouraging a return to the extended posture.
The benefits provided by the tensioning mechanism (104) include enhanced adaptability and customization of the orthosis to fit the specific rehabilitation requirements of a user. The interchangeable tension modules (106) with elastic elements (108) of varying rigidity levels allow for a tailored therapy approach, where the resistance can be adjusted as the user progresses through different stages of rehabilitation. Additionally, the precise adjustability of the points on the rail where the elastic elements (108) are attached allows for the focused application of force in alignment with joint movements, thereby supporting natural biomechanical functions while providing necessary corrective forces to aid in recovery.
In an embodiment, the tensioning mechanism (104) of the hand orthosis (100) is slidable relative to the unified forearm and palm casing (U-FPC) (102). This sliding capability is facilitated by enhanced low-friction rail components integrated within the rail. These components are specifically designed to enhance movement fluidity and reduce abrasion during use. The inclusion of low-friction materials within the rail system not only improves the ease of adjusting the position of the tension modules (106) but also minimizes wear and tear on the system. This feature is particularly advantageous in maintaining the longevity and effectiveness of the hand orthosis (100), ensuring that it can provide sustained support and corrective tension over prolonged periods of therapeutic use.
In an embodiment, adjustment interfaces are located on the unified forearm and palm casing (U-FPC) (102) of the hand orthosis (100), enabling adjustments by users with reduced hand mobility. These interfaces are designed for easy manipulation, requiring minimal effort and dexterity to operate. The strategic placement and design of these interfaces allow users to make necessary adjustments to the hand orthosis (100) without assistance, promoting independence in managing their rehabilitation process. Such user-friendly features are essential for adapting the device to the specific needs and capabilities of its users, thereby enhancing the overall effectiveness and user satisfaction with the hand orthosis (100).
In an embodiment, an articulated joint mechanism is incorporated into the unified forearm and palm casing (U-FPC) (102) of the hand orthosis (100). This mechanism is designed to mimic the natural articulation of human joints, thereby enhancing the natural feel of the device. The incorporation of articulated joints allows for dynamic tension adjustment, adapting to the movements of the user’s digit. This feature contributes significantly to the comfort and functionality of the orthosis (100), providing support that closely replicates natural joint movement and improves user compliance with therapeutic protocols.
In an embodiment, the hand orthosis (100) comprises an automated tension adjustment system utilizing smart sensors and actuators within the rail system. These components detect the degree of flexion and extension of the digit and automatically recalibrate the tension modules (106) accordingly. This automated system ensures that the correct amount of tension is always applied, optimizing therapeutic outcomes. The automation of tension adjustments reduces the need for manual recalibration, making the hand orthosis (100) more effective and easier to use, especially for users with limited mobility or dexterity.
In an embodiment, a modular interface for additional support accessories is integrated into the unified forearm and palm casing (U-FPC) (102) of the hand orthosis (100). This interface is designed to securely hold additional therapeutic devices, such as heat pads or stimulators, which can enhance healing or provide pain relief. The modular nature of the interface allows for easy attachment and removal of these accessories, enabling customized therapy tailored to the specific needs and preferences of the user. Such versatility enhances the utility of the hand orthosis (100) as a comprehensive therapeutic solution.
In an embodiment, the enhanced low-friction rail components of the hand orthosis (100) are made from ultra-high molecular weight polyethylene (UHMWPE) or PTFE (Teflon) composites. These materials are chosen for their exceptional durability and low friction properties. The use of UHMWPE or PTFE in the rail components ensures smooth and consistent operation of the sliding tension mechanism (104), reducing the risk of mechanical failure and enhancing the overall reliability of the hand orthosis (100).
In an embodiment, the enhanced low-friction rail components of the hand orthosis (100) comprise an energy-harvesting element designed to harness kinetic energy from joint movements. This innovative feature captures the energy generated during the movement of the hand orthosis (100) and converts it into electrical energy, which can be used to power the sensors and actuators within the device. The integration of energy-harvesting technology contributes to the sustainability and efficiency of the orthosis (100), reducing the need for external power sources and enhancing the autonomy of the device in therapeutic settings.
In an embodiment, the hand orthosis (100), which includes anti-spastic splints, is constructed predominantly from thermoplastic materials. These materials are chosen for their effectiveness in immobilizing and supporting limbs affected by stroke, which in turn helps to diminish muscle spasticity and maintain proper joint alignment throughout the rehabilitation phase. The splints are outfitted with straps for secure fixation and padding to enhance comfort. Furthermore, the design of these splints can be tailored to accommodate the specific needs of individual patients. The hand orthosis (100) of the present disclosure addresses the shortcomings of conventional splints, which frequently do not provide sufficient support for maintaining the wrist in the essential neutral position required for managing these conditions. The hand orthosis (100) ensures the wrist is maintained in a neutral position, which helps reduce spasticity and offers the needed support to the wrist and finger extensors. Additionally, the hand orthosis (100) is adjustable to ensure a custom fit. These attributes contribute to easier hand movements, increased comfort, and enhanced overall effectiveness in rehabilitation. Moreover, the lightweight and user-friendly design of the splint promotes patient compliance and independence. As a cost-effective solution in stroke rehabilitation, the hand orthosis (100) can be seamlessly integrated with other therapeutic techniques to improve recovery outcomes.
FIG. 2 depicts a hand orthosis (100) designed to offer support and rehabilitative tension to a digit of the hand, in line with the embodiments of the present disclosure. The orthosis includes a unified forearm and palm casing (U-FPC) (102) structured to snugly fit around the forearm and extend to encase a digit. This casing incorporates an integrated rail system utilized to adjust and secure the position of tension module securing points precisely along the joint of the digit, thereby delivering customized support.
Additionally, the hand orthosis (100) is equipped with a tensioning mechanism (104), which encompasses a set of interchangeable tension modules (106). These modules are equipped with elastic elements (108) featuring varying levels of rigidity, indicating that they can be replaced depending on the needed level of support and tension for the digit. Each tension module (106) is connected at one end to the U-FPC (102) and extends to the other end, presumably to apply a controlled force on the digit.
The elastic elements (108) are anchored at two adjustable points on the casing, capable of being moved and secured along the rail system. This capability ensures the span of the joint of the digit is precisely accommodated. Notably, the tension modules (106) are engineered to emit a variable force that adapts to the movements of the digit, offering resistance against flexion without restricting natural motion. As the digit transitions from an extended to a flexed position, the elastic component of the module accommodates this movement and actively assists in returning the digit to an extended position.
Example embodiments herein have been described above with reference to block diagrams and flowchart illustrations of methods and apparatuses. It will be understood that each block of the block diagrams and flowchart illustrations, and combinations of blocks in the block diagrams and flowchart illustrations, respectively, can be implemented by various means including hardware, software, firmware, and a combination thereof. For example, in one embodiment, each block of the block diagrams and flowchart illustrations, and combinations of blocks in the block diagrams and flowchart illustrations can be implemented by computer program instructions. These computer program instructions may be loaded onto a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions which execute on the computer or other programmable data processing apparatus create means for implementing the functions specified in the flowchart block or blocks.
Throughout the present disclosure, the term ‘processing means’ or ‘microprocessor’ or ‘processor’ or ‘processors’ includes, but is not limited to, a general purpose processor (such as, for example, a complex instruction set computing (CISC) microprocessor, a reduced instruction set computing (RISC) microprocessor, a very long instruction word (VLIW) microprocessor, a microprocessor implementing other types of instruction sets, or a microprocessor implementing a combination of types of instruction sets) or a specialized processor (such as, for example, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), a digital signal processor (DSP), or a network processor).
The term “non-transitory storage device” or “storage” or “memory,” as used herein relates to a random access memory, read only memory and variants thereof, in which a computer can store data or software for any duration.
Operations in accordance with a variety of aspects of the disclosure is described above would not have to be performed in the precise order described. Rather, various steps can be handled in reverse order or simultaneously or not at all.
While several implementations have been described and illustrated herein, a variety of other means and/or structures for performing the function and/or obtaining the results and/or one or more of the advantages described herein may be utilized, and each of such variations and/or modifications is deemed to be within the scope of the implementations described herein. More generally, all parameters, dimensions, materials, and configurations described herein are meant to be exemplary and that the actual parameters, dimensions, materials, and/or configurations will depend upon the specific application or applications for which the teachings is/are used. Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific implementations described herein. It is, therefore, to be understood that the foregoing implementations are presented by way of example only and that, within the scope of the appended claims and equivalents thereto, implementations may be practiced otherwise than as specifically described and claimed. Implementations of the present disclosure are directed to each individual feature, system, article, material, kit, and/or method described herein. In addition, any combination of two or more such features, systems, articles, materials, kits, and/or methods, if such features, systems, articles, materials, kits, and/or methods are not mutually inconsistent, is included within the scope of the present disclosure.

Claims

I/We claim:

A hand orthosis (100), comprising:
a unified forearm and palm casing (U-FPC) (102) configured to be releasably secured to a forearm and to encase a digit, the U-FPC (102) including an integrated rail system facilitating the movement and locking of tension module securing points aligned optimally with a joint of the digit;
a tensioning mechanism (104) comprising:
(i) a set of interchangeable tension modules (106), each interchangeable tension module (106) having an elastic element (108) with varying rigidity levels and being selectively connectable to the U-FPC (102);
(ii) each tension module (106) extending between a proximal first end attached to the U-FPC (102) and an opposite distal second end;
(iii) each elastic element (108) of the tension modules (106) maintained at a first point and a second point on the casing, both points being adjustable along the rail and lockable at positions spaced apart to span a joint of the digit; and
wherein each elastic element (108) of the tension modules (106) delivers a variable force that adjusts according to the degree of flexion and extension of the digit, the force adequate to counteract, but not inhibit, bending of the digit such that, when the digit is flexed from an extended posture toward a flexed posture, the elastic element (108) bends with the digit and prompts the digit toward the extended posture.
The hand orthosis (100) of claim 1, further comprising: the tensioning mechanism (104) being slidable relative to the U-FPC (102) facilitated by enhanced low-friction rail components (not numbered) integrated within the rail, enhancing movement fluidity and reducing abrasion.
The hand orthosis (100) of claim 1, comprising adjustment interfaces (not numbered) located on the U-FPC (102), enabling adjustments by users with reduced hand mobility.
The hand orthosis (100) of claim 1, comprising an articulated joint mechanism (not numbered) incorporated into the U-FPC (102) to mimic the natural articulation of human joints, thereby enhancing the natural feel of the device and allowing dynamic tension adjustment.
The hand orthosis (100) of claim 1, comprising an automated tension adjustment system (not numbered) utilizing smart sensors and actuators (not numbered) within the rail system that detect the degree of flexion and extension and automatically recalibrate the tension modules (106).
The hand orthosis (100) of claim 1, comprising: a modular interface (not numbered) for additional support accessories integrated into the U-FPC (102), designed to securely hold additional therapeutic devices, such as heat pads or stimulators (not numbered), which can enhance healing or provide pain relief.
The hand orthosis (100) of claim 2, wherein: the enhanced low-friction rail components (not numbered) are made from ultra-high molecular weight polyethylene (UHMWPE) or PTFE (Teflon) composites.
The hand orthosis (100) of claim 2, wherein the enhanced low-friction rail components (not numbered) comprising energy-harvesting element (not numbered) to harness kinetic energy from joint movements.

SPLINT FOR A HAND

Disclosed is a hand orthosis , comprising: a unified forearm and palm casing (U-FPC) configured to be releasably secured to a forearm and to encase a digit, the U-FPC including an integrated rail system facilitating the movement and locking of tension module securing points aligned optimally with a joint of the digit; a tensioning mechanism comprising: a set of interchangeable tension modules, each module having an elastic element with varying rigidity levels and being selectively connectable to the U-FPC; each tension module extending between a proximal first end attached to the U-FPC and an opposite distal second end; each elastic element of the tension modules maintained at a first point and a second point on the casing, both points being adjustable along the rail and lockable at positions spaced apart to span a joint of the digit; and wherein each elastic element of the tension modules delivers a variable force that adjusts according to the degree of flexion and extension of the digit, the force adequate to counteract, but not inhibit, bending of the digit such that, when the digit is flexed from an extended posture toward a flexed posture, the elastic element bends with the digit and prompts the digit toward the extended posture.
Fig. 1

Drawings
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FIG. 1
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FIG. 2
, Claims:I/We claim:

A hand orthosis (100), comprising:
a unified forearm and palm casing (U-FPC) (102) configured to be releasably secured to a forearm and to encase a digit, the U-FPC (102) including an integrated rail system facilitating the movement and locking of tension module securing points aligned optimally with a joint of the digit;
a tensioning mechanism (104) comprising:
(i) a set of interchangeable tension modules (106), each interchangeable tension module (106) having an elastic element (108) with varying rigidity levels and being selectively connectable to the U-FPC (102);
(ii) each tension module (106) extending between a proximal first end attached to the U-FPC (102) and an opposite distal second end;
(iii) each elastic element (108) of the tension modules (106) maintained at a first point and a second point on the casing, both points being adjustable along the rail and lockable at positions spaced apart to span a joint of the digit; and
wherein each elastic element (108) of the tension modules (106) delivers a variable force that adjusts according to the degree of flexion and extension of the digit, the force adequate to counteract, but not inhibit, bending of the digit such that, when the digit is flexed from an extended posture toward a flexed posture, the elastic element (108) bends with the digit and prompts the digit toward the extended posture.
The hand orthosis (100) of claim 1, further comprising: the tensioning mechanism (104) being slidable relative to the U-FPC (102) facilitated by enhanced low-friction rail components (not numbered) integrated within the rail, enhancing movement fluidity and reducing abrasion.
The hand orthosis (100) of claim 1, comprising adjustment interfaces (not numbered) located on the U-FPC (102), enabling adjustments by users with reduced hand mobility.
The hand orthosis (100) of claim 1, comprising an articulated joint mechanism (not numbered) incorporated into the U-FPC (102) to mimic the natural articulation of human joints, thereby enhancing the natural feel of the device and allowing dynamic tension adjustment.
The hand orthosis (100) of claim 1, comprising an automated tension adjustment system (not numbered) utilizing smart sensors and actuators (not numbered) within the rail system that detect the degree of flexion and extension and automatically recalibrate the tension modules (106).
The hand orthosis (100) of claim 1, comprising: a modular interface (not numbered) for additional support accessories integrated into the U-FPC (102), designed to securely hold additional therapeutic devices, such as heat pads or stimulators (not numbered), which can enhance healing or provide pain relief.
The hand orthosis (100) of claim 2, wherein: the enhanced low-friction rail components (not numbered) are made from ultra-high molecular weight polyethylene (UHMWPE) or PTFE (Teflon) composites.
The hand orthosis (100) of claim 2, wherein the enhanced low-friction rail components (not numbered) comprising energy-harvesting element (not numbered) to harness kinetic energy from joint movements.

SPLINT FOR A HAND