Elastic power-assisted fingerstall for assisting typewriting
By designing an elastic finger sleeve, utilizing elastic strips and a tension adjustment mechanism, combined with a wrist support pad and an electric heating element, the problem of chronic strain caused by tension in the index finger extensor muscles is solved, thereby improving comfort and efficiency during typing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUYANG HOSPITAL OF TRADITIONAL CHINESE MEDICINE
- Filing Date
- 2025-05-09
- Publication Date
- 2026-05-01
AI Technical Summary
Prolonged typing can cause chronic strain on the extensor muscles of the index finger, which is difficult to alleviate effectively with current technology.
Design an elastic assistive finger sleeve for typing, which provides elastic assistance through elastic strips and tension adjustment mechanism to reduce the active contraction force of the index finger extensor muscle, and promotes muscle relaxation by combining wrist support pad and electric heating element.
It effectively reduces the tension of the extensor muscles of the index finger and its accessory muscle groups, lowers the incidence of chronic strain, and improves typing comfort and efficiency.
Smart Images
Figure CN224179217U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an auxiliary finger sleeve that provides elastic assistance when typing. Background Technology
[0002] The index finger has three segments. The first segment, closer to the palm, is called the proximal segment; the second segment, located between the first and third segments, is called the middle segment; and the third segment, farther from the palm, is called the distal segment. The index finger bears the brunt of the workload when typing. Typing can be divided into two actions: lifting the finger and lowering the finger. Lifting the finger involves dorsiflexion of the finger joint, while lowering the finger involves palmar flexion. From a physiological perspective, palmar flexion is generally easier to perform for the following reasons:
[0003] Natural posture: When relaxed, fingers are usually slightly bent, a posture that better reflects their natural shape. Palmar flexion is closer to the fingers' natural resting state and is therefore easier to perform. Dorsiflexion requires the fingers to extend from their natural bent state in the opposite direction, which demands more muscle strength and joint flexibility.
[0004] Muscle strength: The finger flexors (responsible for palmar flexion) are generally stronger than the finger extensors (responsible for dorsiflexion). This is because finger flexion movements (such as grasping and pinching) are more frequent in daily life, giving the finger flexors more exercise. The finger extensors are used relatively less, so they may be slightly weaker in terms of strength and endurance.
[0005] Joint structure: The joint structure of the fingers is better adapted to flexion movements. The shape of the articular surfaces and ligament structure of the metacarpophalangeal and interphalangeal joints make palmar flexion smoother. Dorsiflexion requires overcoming more joint resistance, especially when the fingers are already in a slightly flexed position during typing.
[0006] When raising the index finger, the contraction of the extensor muscles on the back of the index finger is the primary mechanism. While these extensor muscles also connect to the index finger, they mainly control the extension and straightening of the middle, ring, and little fingers, playing a supporting role in straightening the index finger during typing. The lumbrical muscles on the palmar side of the index finger participate in the precise control and coordination of the index finger's movements during typing. Furthermore, during prolonged continuous typing, to maintain wrist stability and provide sufficient strength support, the wrist extensor muscles (such as the extensor carpi radialis brevis, extensor carpi radialis longus, and extensor carpi ulnaris) and flexor muscles, as well as some shoulder muscles (such as the upper trapezius), also participate and work synergistically to varying degrees.
[0007] Prolonged typing involves lifting the index finger while typing, which causes tension in the muscle groups, primarily the extensor muscles of the index finger. This can easily lead to chronic strain, with typical symptoms including chronic aseptic inflammation of the tendon sheath. Utility Model Content
[0008] To address the aforementioned drawbacks, the technical problem this invention aims to solve is to provide an auxiliary finger sleeve that offers elastic assistance during typing, effectively reducing tension in the muscles related to the index finger. The technical solution adopted by this invention is an elastic assistive finger sleeve for typing, characterized by comprising a proximal knuckle sleeve worn on the proximal knuckle of the index finger and a wrist sleeve worn on the wrist; the proximal knuckle sleeve and the wrist sleeve are connected by an elastic strip, which is distributed along the back of the index finger and the back of the hand; the elastic strip is equipped with a tension adjustment mechanism.
[0009] The beneficial effect of this utility model is that, after wearing the elastic assistive finger sleeve described herein, the tension of the elastic strip can be adjusted by the tension adjustment mechanism, so that the elastic strip is in an elastically stretched state in the pre-typing state. When typing on the keyboard or mouse, when the index finger is lifted, the elastic strip elastically contracts along the back of the finger to provide a backward and upward assistive force; this changes the index finger's working mode from relying entirely on active contraction to a mixed active and passive contraction mode, which not only reduces the contraction force of the index finger extensor muscles by assisting, but also effectively relieves the tension of the index finger extensor muscles and its auxiliary muscle groups, thereby reducing the incidence of chronic strain.
[0010] Preferably, the length of the proximal knuckle sleeve corresponds to the proximal knuckle, and the connection between the elastic strip and the proximal knuckle sleeve is close to the middle knuckle. This provides good pulling assistance and comfort.
[0011] Preferably, the wristband has a support pad at the front end to support the base of the palm. This further relieves tension in the extensor muscles of the index finger and its related accessory muscle groups.
[0012] Preferably, the support pad is a salt pack. Salt packs made of coarse salt or sea salt allow for easy adjustment of their thickness and shape to suit the typist's individual needs.
[0013] Preferably, the support pad and / or the proximal knuckle sleeve and wrist sleeve are equipped with an electric heating element.
[0014] Preferably, the support pad, proximal knuckle sleeve, wrist sleeve, and elastic strip are disposed on corresponding parts of the glove. The glove can be a full-finger glove or a fingerless glove. It can also be a five-finger glove or a glove with fewer than five fingers.
[0015] Preferably, the cross-section of the elastic strip near the end of the wristband is smaller.
[0016] Preferably, the tension adjustment structure includes positioning holes provided in the proximal knuckle sleeve and / or wrist sleeve, and also includes a Velcro connecting assembly provided on the elastic strip. This provides good convenience.
[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time.
[0018] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0019] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0022] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0023] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation. Attached Figure Description
[0024] Figure 1 This is a structural schematic diagram from the side view angle of Example 1;
[0025] Figure 2 This is a structural schematic diagram from a low angle for Example 1;
[0026] Figure 3 This is a schematic diagram of the wearing state structure (back of hand) of Example 1;
[0027] Figure 4 This is a schematic diagram of the wearing state structure (palm) of Example 1;
[0028] Figure 5 This is a structural schematic diagram of Example 2 (back of the glove);
[0029] Figure 6 This is a schematic diagram of the structure of Example 2 (palm of the glove). Detailed Implementation
[0030] Example 1: See Appendix Figure 1-4 This describes a specific structure of the present invention. The elastic assistive finger sleeve for typing includes a proximal knuckle sleeve 1 that is worn on the proximal knuckle of the index finger and a wrist sleeve 2 that is worn on the wrist; the proximal knuckle sleeve 1 and the wrist sleeve 2 are connected by an elastic strip 3, which is distributed along the back of the index finger and the back of the hand; the elastic strip 3 is provided with a tension adjustment mechanism.
[0031] In the example, the tension adjustment structure includes positioning holes 4 on the proximal knuckle sleeve 1 and the wrist sleeve 2, and also includes a Velcro fastener assembly 5 on the elastic strip 1. Other embodiments may also use other mechanisms to adjust the length of the strap (such as a belt, shoulder strap, etc.).
[0032] In this example, the length of the proximal knuckle sleeve 1 is set to correspond to the length of the proximal knuckle to improve working stability and pulling comfort. The connection between the elastic strip 3 and the proximal knuckle sleeve 2—the positioning hole 4—is close to the middle knuckle of the index finger. This provides good pulling performance and comfort.
[0033] In the example, the front end of the wrist sleeve 2 is provided with a support pad 6 to support the base of the palm. It raises the wrist position by about 1 to 1.5 cm. When used in conjunction with the proximal knuckle sleeve 1, wrist sleeve 2 and elastic strip 3, it further improves comfort, reduces pressure on the hand muscles, including the finger extensor muscles, and further relieves tension in the index finger extensor muscles and related accessory muscle groups.
[0034] After wearing the elastic assistive finger sleeve described in this utility model, the tension of the elastic strip 3 can be adjusted by the tension adjustment mechanism, so that the elastic strip 3 is in an elastically stretched state in the pre-typing state. Specifically, the device in the example can gently pull one end of the elastic strip 1, so that the elastic strip 1 gradually stretches to a comfortable but still tangible stretch. During initial use, it can be repeatedly adjusted during typing to suit the typist's individual needs. When typing on the keyboard or mouse, the index finger is actively lifted first, and the elastic strip elastically contracts along the back of the finger to provide a backward and upward assistive force; this changes the index finger's working mode from relying entirely on active contraction to a mixed active and passive contraction mode. This not only reduces the contraction force of the index finger extensor muscles through assistance, but also, after the related muscle groups adapt to passive assistance, effectively relieves the tension of the index finger extensor muscles and their auxiliary muscle groups, thereby reducing the incidence of chronic strain.
[0035] Example 2: See Appendix Figure 5 , 6 This illustrates another specific structure of the present invention. The difference from Embodiment 1 is that the support pad 6, the proximal knuckle sleeve 1, the wrist sleeve 2, and their elastic strip 3 are disposed in corresponding positions within the glove 9. In this example, the glove 9 is a full-finger glove or a five-finger glove; in other embodiments, it can also be a fingerless glove or a glove with fewer than five fingers (such as a glove with only an index finger). The glove has an inner cavity to accommodate the elastic strip 3, allowing it to stretch and contract freely.
[0036] In the example, one end of the elastic strip 3 is fixed close to the knuckle sleeve 1. The other end of the elastic strip 3 is connected to the wrist sleeve 2 through a tension adjustment mechanism. Specifically, the elastic strip 3 passes through the through hole on the glove 9, and several positioning holes (not shown in the figure) are distributed along the extension direction of the elastic strip 3. The positioning holes are fixed on the positioning hook (not shown in the figure) inside the wrist sleeve 2, similar to the structure of a belt.
[0037] In the example, the cross-section of the elastic strip 3 near the wristband 2 is smaller, making its elastic tension more in line with the needs of typing assistance.
[0038] In this example, the support pad 6 is a sea salt packet attached to the base of the palm of the glove 9. The salt packet, composed of sea salt granules, allows for easy adjustment of its thickness and shape to suit the typist's individual needs. In this example, the support pad 6, the proximal knuckle sleeve 1, and the wrist sleeve 2 are equipped with electric heating elements. Each heating element is electrically connected to a power source 7 via wires, and the power source 7 has an electrical switch 8. Heating promotes blood circulation in the relevant muscle groups, further relieving tension.
[0039] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and describes these embodiments in detail with reference to the accompanying drawings to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is limited only to the claims and their full scope and equivalents, and not to the specific embodiments disclosed.
Claims
1. An elastic assistive finger sleeve for typing, characterized in that, It includes a proximal knuckle sleeve worn on the proximal knuckle of the index finger and a wrist sleeve worn on the wrist; the proximal knuckle sleeve and the wrist sleeve are connected by an elastic strip, which is distributed along the back of the index finger and the back of the hand; the elastic strip is provided with a tension adjustment mechanism.
2. The elastic assistive finger sleeve for typing as described in claim 1, characterized in that, The length of the proximal knuckle sleeve is set to correspond to the proximal knuckle, and the connection between the elastic strip and the proximal knuckle sleeve is close to the middle knuckle.
3. The elastic assistive finger sleeve for typing as described in claim 1, characterized in that, The wristband has a support pad at the front end to support the base of the palm.
4. The elastic assistive finger sleeve for typing as described in claim 3, characterized in that, The support pad is a salt pack.
5. The elastic assistive finger sleeve for typing as described in claim 3 or 4, characterized in that, The support pad and / or the proximal knuckle sleeve and wrist sleeve are equipped with electric heating elements.
6. The elastic assistive finger sleeve for typing as described in claim 3, characterized in that, The support pad, proximal knuckle sleeve, wrist sleeve, and elastic strip are installed on the corresponding parts of the glove.
7. The elastic assistive finger sleeve for typing as described in claim 1, characterized in that, The elastic strip has a smaller cross-section at the end near the wristband.
8. The elastic assistive finger sleeve for typing as described in claim 1, characterized in that, The tension adjustment mechanism includes positioning holes provided on the proximal knuckle sleeve and / or wrist sleeve, and also includes a Velcro connection assembly provided on the elastic strip.