Adjustable acra facet joint elastic fixing device

Abstract

The invention relates to the technical field of medical instruments, and discloses an adjustable acra facet joint elastic fixing device which comprises a fixing ring and an elastic membrane assembly, the fixing ring is connected with the elastic membrane assembly, and the elastic membrane assembly comprises a first elastic membrane, an elastic reinforcing rib and a second elastic membrane. The elastic film assembly comprises two or more elastic reinforcing ribs, the elastic reinforcing ribs are arranged and fixed between the first elastic film and the second elastic film, and curing agents are arranged in the elastic reinforcing ribs. The device disclosed by the invention has a tight fitting effect on nail grooves and surrounding tissues thereof, and can play a role in treating or preventing ingrown nail paronychia or paronychia soft tissue hyperplasia or nail embedding disease caused by far-end nail loss; the device and the finger of a patient can be attached and fixed in an individualized mode, and the effect of treating the fracture of the far end of the finger or the far end of the toe can be achieved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an adjustable elastic fixing device for small joints of extremities. Background Art

[0002] Phalaenopsis fractures are most common in the hands and feet. Depending on the location, they can be divided into fractures of the proximal phalanx, middle phalanx and distal phalanx. Among them, distal phalanx fractures are mostly comminuted fractures, often without obvious displacement; while avulsion fractures on the dorsal side of the distal phalanx base usually form a hammer finger deformity. For non-displaced fractures, the injured finger can be fixed with an aluminum plate or plaster in the flexion of the metacarpophalangeal joint and slight flexion of the interphalangeal joint. The fixation can be removed after about 4 weeks and functional exercises can be performed. Comminuted fractures of the distal phalanx can be treated as soft tissue injuries and do not need to be fixed. For closed fractures with displacement, manual reduction and external fixation can be performed. The fixation position should be determined according to the displacement of the fracture. For example, if the palm side is angulated, the finger should be fixed in a flexed position; for dorsal avulsion fractures of the distal phalanx base, the proximal interphalangeal joint should be flexed and the distal interphalangeal joint should be hyperextended.

[0003] In hospitals and some clinics, special orthopedic splints are used to fix the patient's fingers for emergency treatment of finger fractures. When using splints for fixation, aluminum splints are often fixed with tape to fix the patient's fingers. This fixation method has a relatively simple structure and cannot be adjusted according to the fracture type and fracture healing status. The covering effect on both sides of the patient's fingers is poor, which can easily cause secondary injuries to the patient's fingers.

[0004] Another common hand (foot) disease is paronychia and embedded onychomycosis. Paronychia is an inflammation of the nail grooves and surrounding tissues formed along the sides of the nails. It is often caused by ingrown nails irritating the surrounding nail folds, causing lateral soft tissue hyperplasia. Entrapped onychomycosis is caused by the change in stress at the distal end of the toe (fingers) due to nail shedding or distal nail loss, which leads to anterior soft tissue hyperplasia. The nail cannot grow normally due to the obstruction of the anterior soft tissue, resulting in local nail thickening, yellowing, pain, etc. Clinical treatment is often used to apply adhesive tape to the ends to inhibit the soft tissue hyperplasia caused by paronychia or embedded onychomycosis. However, the adhesive tape has poor adhesion to the skin and is easily deformed, so the degree of adhesion is poor, and it is difficult to have an effect on soft tissue hyperplasia.

[0005] Therefore, it is necessary to propose a new device for the clinical treatment of finger (toe) bone fractures and hand (foot) diseases paronychia and embedded nail disease to achieve more effective treatment. Summary of the invention

[0006] In order to solve the above-mentioned existing problems, the present invention discloses an adjustable elastic fixation device for the small joints of the extremities, which can fit closely to the nail groove and surrounding toes when worn in the forward direction, and can be used to treat paronychia and prevent soft tissue hyperplasia. When worn in the reverse direction, it can fix the distal fracture site and play a role in treating distal fractures of fingers or toes.

[0007] On the one hand, the present invention provides an adjustable elastic fixation device for small joints of the extremities, comprising a fixing ring and an elastic membrane assembly, wherein the fixing ring is connected to the elastic membrane assembly, wherein the elastic membrane assembly comprises a first elastic membrane, elastic reinforcing ribs and a second elastic membrane, wherein the elastic membrane assembly comprises two or more elastic reinforcing ribs, wherein the elastic reinforcing ribs are arranged and fixed between the first elastic membrane and the second elastic membrane, and wherein a curing agent is arranged in the elastic reinforcing ribs.

[0008] The small joints of the extremities of the present invention include distal phalanges and distal joints. The fixed ring is worn on the phalanges corresponding to the proximal phalanges or middle phalanges, and the elastic membrane component is worn on the distal limb of the phalanges where the fixed ring is worn, so that the above-mentioned small joints of the extremities can be elastically fixed.

[0009] The elastic fixation means that it can be elastically adjusted when worn, fixes the small joints of the extremities after wearing, and has a certain elasticity during fixation; on the one hand, the elastic adjustment is mainly achieved by the elastic membrane component, firstly, the position of the fixed finger ring is adjusted to determine the tightness of the elastic membrane component within a roughly appropriate range, and then the elastic reinforcement ribs are pulled, and the elastic reinforcement ribs drive the elastic membrane to move and perform elastic adjustment, and when the elastic reinforcement ribs are in the appropriate position, the elastic reinforcement ribs are cured from the inside with a curing agent to fix the entire device; on the other hand, the small joints of the extremities are fixed by curing the elastic reinforcement ribs from the inside with a curing agent, and since the elastic reinforcement ribs wrap the fingers during the pulling process, the fingers have a corresponding shape, at this time, the solidified elastic reinforcement ribs are not easy to detach, and at least two elastic reinforcement rib structures can fix the small joints of the extremities more firmly; on the other hand, the elasticity in fixation is mainly reflected in the elastic membrane, the elastic membrane is only fixed in position, has elasticity to the corresponding skin, can have a close fit to the nail groove and its surrounding tissues, and play a role in inhibiting soft tissue hyperplasia. Therefore, the present invention has a better treatment and prevention effect on the soft tissue hyperplasia of paronychia, which is better than the existing treatment method of adhesive tape fitting; and it produces individualized fit with the patient's fingers, which is conducive to individualized fixation of the fracture site, and is more conducive to the recovery of the fracture compared with the orthopedic special splint with fixed specifications.

[0010] The present invention subsequently provides specific examples of adjusting components of the elastic reinforcing ribs and the use of curing agents, which are only a practice within the broad conceptual scope of the present invention and do not exclude other ways of using adjusting components of the elastic reinforcing ribs and curing agents.

[0011] In some embodiments, the fixing ring is made of a flexible material, and a portion of the fixing ring that contacts the skin is provided with an adhesive.

[0012] It is worth noting that the fixing ring only plays a fixing role during the wearing and adjustment process. After wearing, the elastic membrane component mainly provides elastic fixation and curing fixation. The elastic reinforcement ribs have the meaning of strengthening the elastic fixing effect of the elastic membrane on the patient's affected part, and can also be elastically adjusted to strengthen the fixation effect of the patient's affected part in a personalized manner.

[0013] In some embodiments, the elastic membrane component has a shape of a distal end of a finger or a toe, and the elastic membrane component is provided with hollows.

[0014] The hollow structure is conducive to breathability and can reduce the probability of secondary infection in paronychia. When worn in the forward direction, the hollow part and the nail part overlap, so the color of the nail can be observed and the recovery of paronychia can be judged. In the application of fracture patients, the hollow structure reduces the force on the distal phalanx in the opposite direction of the nail, and the overall elastic force has the effect of pulling the vertical finger to reposition.

[0015] In some embodiments, the fixed finger ring has a hollow structure, the fixed finger ring includes a rotation adjustment piece, one end of the elastic reinforcement rib is arranged in the hollow structure of the fixed finger ring, and one end of the elastic reinforcement rib is connected to the rotation adjustment piece.

[0016] Furthermore, the rotary adjustment member includes a nut and a screw rod, one end of the elastic reinforcement rib is connected to the screw rod, and the nut is arranged on the outer surface of the fixed finger ring.

[0017] By rotating the nut in any direction, one end of the elastic reinforcement rib can be wound around the screw in one direction, thereby driving the elastic reinforcement rib to shrink inward. The elastic reinforcement rib is fixed to the first elastic membrane and the second elastic membrane, thereby also driving the elastic membrane to shrink inward, playing a regulating role.

[0018] Furthermore, the rotary adjusting member also includes a damping block, the nut, the screw rod and the damping block are connected in sequence, the damping block is arranged inside the fixed finger ring, and the damping block is used to provide damping when the rotary adjusting member rotates.

[0019] The damping block rotates in the corresponding damping groove, and the friction force generated can suppress rebound during the rotation adjustment process of the rotary adjustment member, making the rotation adjustment more labor-saving and suitable for manual adjustment scenarios; under a certain damping, rebound can be completely eliminated, which is suitable for scenarios where supporting equipment is used for adjustment.

[0020] It is worth noting that after the elastic reinforcement ribs are cured, they will no longer generate elastic force on the rotating adjustment parts. One usage scenario is: the patient uses a screwdriver to adjust the nut, driving the screw to rotate and placing the elastic reinforcement ribs in the appropriate position without removing the screwdriver. Curing is carried out at this time. After complete curing, the screwdriver can be removed without rebound.

[0021] In some embodiments, the elastic reinforcing rib includes a first elastic reinforcing rib and a second elastic reinforcing rib, the first elastic reinforcing rib is arranged on one side of the hollowing, and the second elastic reinforcing rib is arranged on the opposite side of the hollowing.

[0022] Preferably, the first elastic reinforcement rib includes a first branch and a second branch, one end of the first branch and the second branch merge at the outer side of the hollow, and the other ends of the first branch and the second branch are respectively arranged on the upper left side and the upper right side of the fixed ring.

[0023] Preferably, the second elastic reinforcement rib includes a third branch, a fourth branch, a fifth branch, a sixth branch and a seventh branch, one ends of the third branch, the fourth branch, the fifth branch, the sixth branch and the seventh branch converge at the distal end of the elastic membrane assembly, and the other ends of the third branch, the fourth branch, the fifth branch, the sixth branch and the seventh branch are respectively arranged on the left side, the lower left side, the lower side, the lower right side and the right side of the fixed finger ring.

[0024] By arranging the first elastic reinforcement rib and the second elastic reinforcement rib on both sides of the hollow, better fixation can be achieved. The multi-branch structure divides the elastic membrane into multiple small areas. The shortened width of the elastic membrane makes it more difficult for elastic deformation to occur. The elastic membrane has a better elastic fixation function and can be fixed from multiple directions of the knuckles at the same time, thereby improving the stability of fixation. The confluence of the branches is beneficial to the balance of force on each branch during the wearing and adjustment process, so that the patient's affected part remains stable during the wearing and adjustment process and no secondary injury occurs. For paronychia and embedded nail disease, the first elastic reinforcement rib and the second elastic reinforcement rib just wrap the nail groove and surrounding tissues, effectively inhibiting soft tissue hyperplasia. For fractures, when worn on the reverse side, the first elastic reinforcement rib and the second elastic reinforcement rib generate an overall elastic force to pull the vertical finger back to its original position, and fixation is performed after the reduction is achieved, which is beneficial to the recovery of distal phalanx fractures.

[0025] In some embodiments, the elastic reinforcement rib includes a curing cavity, which is a cavity composed of an elastic material, and a curing agent is disposed in the curing cavity.

[0026] The curing agent is stored in a cavity such as a curing cavity. On the one hand, the liquid curing agent contained in the curing cavity will not affect the elastic movement of the elastic reinforcing rib during adjustment. On the other hand, the elastic reinforcing rib is stretched to a suitable position along with the rotating adjusting piece during adjustment. Curing at this time can fix the stretched position. First, the fixed protection part is increased, and second, the fixed part fits tightly to the outer contour of the finger or toe after being squeezed, which is not easy to fall off, and there is no need to set a fastening device in the fixed finger ring. Various existing fixing devices are easy to hinder the blood circulation of the distal tissue because the fastening device is set at the proximal end of the limb. The device of the present invention does not need to set a fastening device, so the blood circulation can be kept unobstructed.

[0027] In some embodiments, the curing agent includes a low temperature thermoplastic material.

[0028] Low-temperature thermoplastic material is a material that can be repeatedly plasticized by heating at low temperatures. It is usually a specially synthesized high-molecular polyester. Taking polyester as an example, it can be softened by soaking in hot water at 60-70°C, and then solidified by natural cooling or accelerated cooling with a cold air gun after adjustment to the appropriate position. The solidified low-temperature thermoplastic material usually has high rigidity and wear resistance. It can be softened again by heating it to 60-70°C, and then cooled and solidified after adjustment to the appropriate position, which can realize the function of dynamic adjustment during patient treatment.

[0029] In some embodiments, the curing agent includes a first curing agent and a second curing agent, the first curing agent and the second curing agent are cured by a chemical reaction, the first curing agent and vesicles are arranged in the curing cavity, and the second curing agent is arranged in the vesicles.

[0030] In some embodiments, the diameter of the vesicle is greater than or equal to the inner diameter of the solidification cavity.

[0031] The advantages of the vesicle structure are: the vesicle can be destroyed more conveniently to release the second curing agent. It can be destroyed manually by relatives or nurses, or squeezed and destroyed using supporting equipment. The specific squeezing direction can be parallel to the surface of the finger, that is, squeezing from the side of the elastic reinforcement rib; in addition, after the elastic reinforcement rib is elastically adjusted in the previous step, the diameter of the curing cavity is reduced, while the size of the vesicle is not reduced. Therefore, the position of the vesicle can be clearly observed or felt by the patient, or the supporting equipment can automatically identify the position of the vesicle, so as to carry out targeted squeezing and destruction; in addition, the vesicle can be evenly distributed in the curing cavity, making the curing more uniform and playing a certain role in strengthening the curing; secondly, the structure of the vesicle makes it possible for the second curing agent in its content to diffuse rapidly into the first curing agent under pressure after being destroyed, which can accelerate the curing speed and enhance the strength after curing; finally, the manufacturing process of the vesicle structure is simple, the cost is low, and it is convenient for large-scale production.

[0032] In some embodiments, the first curing agent includes epoxy resin, and the second curing agent includes thiol.

[0033] The epoxy resin includes any liquid aromatic, aliphatic or cycloaliphatic epoxy resin, and examples of epoxy resins include but are not limited to bisphenol A epoxy resin, bisphenol F epoxy resin, aliphatic glycidyl ether, epoxy novolac resin and brominated epoxy resin; the first curing agent can be a solution of epoxy resin or a blend of epoxy resin and other additives.

[0034] The key structure for reaction and curing with epoxy resin is mercapto group, and the mechanism of action is cross-linking of mercapto group with epoxy group of epoxy resin. Therefore, the mercaptan includes any aromatic or aliphatic compound having mercapto structure, and also includes a class of compounds having unsaturated units in the above compounds themselves and polythiol compounds polymerized with other compounds having unsaturated units; the second curing agent can be a solution of mercaptan or a mixture of mercaptan and other additives.

[0035] At room temperature or body surface temperature, epoxy resin can be quickly cured with thiol, and the curing time is, for example, 30s, 60s, etc. The curing time can be further accelerated under the catalysis of certain additives; the exothermicity of the curing process is not intense, and the amount of curing agent used is not large. Compared with low-temperature thermoplastic materials, the curing process temperature of the above-mentioned epoxy resin and thiol is lower, usually below body temperature, and the patient's acceptance is higher. From the temperature perspective, it does not have an adverse effect on the patient's affected area.

[0036] On the other hand, the present invention provides a use of the adjustable elastic fixation device for small extremity joints in treating or preventing ingrown toenail paronychia or onychomycosis caused by soft tissue hyperplasia of paronychia or distal nail loss.

[0037] The principle of the adjustable elastic fixation device for the small joints of the extremities of the present invention for treating or preventing ingrown toenail paronychia is that the ingrown toenail can be separated from the nail fold by pulling the elastic reinforcing ribs, and then a curing agent is used for curing to keep the ingrown toenail and the nail fold in a separated state, thereby avoiding the ingrown toenail irritating the surrounding nail folds and causing ingrown toenail paronychia; the treatment or prevention of soft tissue hyperplasia of paronychia or embedded nail disease caused by distal nail loss is similar to the above, thereby avoiding the ingrown toenail irritating the surrounding nail folds and causing lateral soft tissue hyperplasia and embedded nail disease; in the treatment or prevention of embedded nail disease caused by distal nail loss, hollowing out can also avoid inflammation caused by anaerobic bacteria in the missing part of the nail and other related complications.

[0038] On the other hand, the present invention provides a use of the adjustable elastic fixation device for small extremity joints in treating distal fractures of fingers or toes.

[0039] The principle of the adjustable elastic fixation device for small joints of the extremities of the present invention for treating or preventing distal fractures of fingers or toes is that the elastic reinforcing ribs are pulled to drive the distal structure of the fingers or toes of the elastic membrane assembly itself, thereby providing a force to reposition the vertical fingers. After the repositioning is completed, a curing agent is used for curing. The cured elastic reinforcing ribs fit the shape of the patient's affected area to achieve personalized fixation. At the same time, the elastic reinforcing ribs with a multi-branch structure are evenly stressed to avoid secondary injuries to the patient when treating fractures.

[0040] On the other hand, the present invention provides a composition for preparing a device for treating or preventing ingrown toenail paronychia or onychomycosis caused by soft tissue hyperplasia or distal nail loss and / or treating distal fractures of fingers or toes, the composition comprising a first curing agent and a second curing agent, the first curing agent comprising an epoxy resin, and the second curing agent comprising a thiol.

[0041] The reason why the above composition is used to prepare a device for treating or preventing paronychia soft tissue hyperplasia and / or treating distal fractures of fingers or toes is that the above composition can react and cure rapidly at room temperature or body surface temperature, thereby enhancing the efficiency of the device, and the thermal effect of curing is not obvious, and it is not easy to cause burns or adversely affect the patient's affected area. Compared with other curing methods such as low-temperature thermoplastic materials, the safety of the reaction curing between epoxy resin and thiol is significantly improved.

[0042] In summary, the present invention has the following beneficial technical effects: The present invention provides an adjustable elastic fixing device for small joints of the extremities, which can be elastically adjusted when worn, fixes the small joints of the extremities after wearing, and has a certain elasticity during fixation; on the one hand, the elastic adjustment is mainly achieved by an elastic membrane component, firstly, the position of the fixing finger ring is adjusted to determine the tightness of the elastic membrane component within a roughly appropriate range, and then the elastic reinforcing ribs are pulled, and the elastic reinforcing ribs drive the elastic membrane to move and perform elastic adjustment, and when the elastic reinforcing ribs are in the appropriate position, a curing agent is used to cure the elastic reinforcing ribs from the inside to fix the entire device; on the other hand, the small joints of the extremities are fixed by curing the elastic reinforcing ribs from the inside with a curing agent, and since the elastic reinforcing ribs wrap the fingers during the pulling process, The elastic reinforcing ribs have a shape corresponding to the fingers, and the solidified elastic reinforcing ribs are not easy to be separated, and at least two elastic reinforcing rib structures can fix the small joints of the extremities more firmly; on the other hand, the elasticity in fixation is mainly reflected in the elastic membrane, which is only used to fix the position, has elasticity to the corresponding skin, and can have a close fit to the nail groove and the surrounding tissues, thereby inhibiting the proliferation of soft tissues. Therefore, the present invention has a better treatment and prevention effect on the proliferation of soft tissues of paronychia, which is better than the existing treatment method of adhesive tape fitting; and the individualized fit with the patient's fingers is conducive to the individualized fixation of the fracture site, which is more conducive to the recovery of the fracture than the orthopedic splint with fixed specifications; The hollow structure is good for ventilation and can reduce the probability of concurrent infection in paronychia. When worn in the forward direction, the hollow part and the nail part overlap, and the color of the nail can be observed to judge the recovery of paronychia. In the application of fracture patients, the hollow structure reduces the force on the distal phalanx in the opposite direction of the nail, and the overall elastic force has the effect of pulling the vertical finger back to the original position. By rotating the nut in any direction, one end of the elastic reinforcing rib can be wound around the screw in one direction, thereby driving the elastic reinforcing rib to shrink inward. The elastic reinforcing rib is fixed to the first elastic membrane and the second elastic membrane, thereby also driving the elastic membrane to shrink inward, playing a role of adjustment; the damping block rotates in the corresponding damping groove, and the friction force generated can suppress rebound during the rotation adjustment process of the rotary adjustment member, making the rotation adjustment more labor-saving and suitable for manual adjustment scenarios; under a certain damping, rebound can be completely eliminated, which is suitable for scenarios where supporting equipment is used for adjustment; The curing agent is stored in a cavity such as a curing cavity. On the one hand, the liquid curing agent contained in the curing cavity will not affect the elastic movement of the elastic reinforcing rib during adjustment. On the other hand, the elastic reinforcing rib is stretched to a suitable position along with the rotating adjusting member during adjustment. At this time, curing can fix the stretched position. First, the fixed protection part is increased. Second, the fixed part fits tightly to the outer contour of the finger or toe after being squeezed, and is not easy to fall off. There is no need to set a fastening device in the fixed finger ring. The existing various fixing devices are easy to hinder the blood circulation of the distal tissue because the fastening device is set at the proximal end of the limb. The device of the present invention does not need to set a fastening device, and can keep the blood circulation unobstructed. By setting the first elastic reinforcing rib and the second elastic reinforcing rib on both sides of the hollow, better fixation can be achieved. The multi-branch structure divides the elastic membrane into multiple small areas. The shortened width of the elastic membrane makes it more difficult for elastic deformation to occur. The elastic membrane has better elastic fixation and is fixed from multiple directions of the knuckles at the same time, thereby improving the stability of fixation. The confluence of the branches is conducive to the balance of force on each branch during wearing and adjustment, so that the patient's affected part remains stable during wearing and adjustment, and no secondary injury occurs. For paronychia, the first elastic reinforcing rib and the second elastic reinforcing rib just wrap around the nail groove and surrounding tissues, effectively inhibiting soft tissue hyperplasia. For fractures, when the reverse side is worn, the first elastic reinforcing rib and the second elastic reinforcing rib generate an overall elastic force to pull the vertical finger back to its original position, and fixation is performed after the reduction is achieved, which is conducive to the recovery of distal phalanx fractures. The advantages of the vesicle structure are: the vesicle can be destroyed more conveniently to release the second curing agent. It can be destroyed manually by relatives or nurses, or squeezed and destroyed using supporting equipment. The specific squeezing direction can be parallel to the surface of the finger, that is, squeezing from the side of the elastic reinforcing rib. In addition, after the elastic reinforcing rib is elastically adjusted in the previous step, the diameter of the curing cavity is reduced, while the size of the vesicle is not reduced. Therefore, the position of the vesicle can be clearly observed or felt by the patient, or the supporting equipment can automatically identify the position of the vesicle, so as to carry out targeted squeezing and destruction. In addition, the vesicle can be evenly distributed in the curing cavity, making the curing more uniform and playing a certain role in strengthening the curing. Secondly, the structure of the vesicle makes it possible for the second curing agent in the vesicle to diffuse rapidly into the first curing agent under pressure after being destroyed, which can accelerate the curing speed and enhance the strength after curing. Finally, the manufacturing process of the vesicle structure is simple, the cost is low, and it is easy to carry out large-scale production. At room temperature or body surface temperature, epoxy resin can be quickly cured with thiol, and the curing time is, for example, 30s, 60s, etc. The curing time can be further accelerated under the catalysis of certain additives; the exothermicity of the curing process is not intense, and the amount of curing agent used is not large. Compared with low-temperature thermoplastic materials, the curing process temperature of the above-mentioned epoxy resin and thiol is lower, usually below body temperature, and the patient's acceptance is higher. From the temperature perspective, it does not have an adverse effect on the patient's affected area. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 : Schematic diagram of the overall structure of the adjustable thumb distal elastic fixing device; Figure 2 : Side view of the adjustable thumb distal elastic fixation device; Figure 3 : A schematic diagram of the front structure of the elastic membrane assembly after the second elastic membrane is peeled off; Figure 4 : Schematic diagram of the reverse structure of the elastic membrane assembly after the second elastic membrane is peeled off; Figure 5 : Schematic diagram of the cross-sectional structure of the fixed finger ring; Figure 6 : Figure 5 A partial enlarged structural diagram of the middle A part; Figure 7 : Schematic diagram of the structure of the first elastic reinforcement rib; Figure numerals: 1-elastic membrane assembly, 2-fixing finger ring, 11-first elastic membrane, 12-first elastic reinforcement rib, 13-second elastic reinforcement rib, 121-connecting line, 122-curing cavity, 123-vesicle, 21-through hole, 22-nut, 23-screw, 24-damping block, 25-damping groove. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] The adjustable elastic fixing device for small joints of the extremities of the present invention can be divided into adjustable elastic fixing devices specifically for the thumb, other fingers, big toe and other toes according to the characteristics of the specific wearing parts, and the only difference between them is the different shapes and sizes of the elastic membrane components. The following takes the adjustable distal elastic fixing device of the thumb as an example. Examples 1 and 2 are structural descriptions of the adjustable distal elastic fixing device of the thumb. Examples 3 and 4 are respectively the adjustable distal elastic fixing device of the thumb in Example 1 used to elastically fix the thumb nail groove and surrounding tissues of patients with paronychia, and the adjustable distal elastic fixing device of the thumb in Example 2 is used to elastically fix the distal phalanx of the thumb of patients with distal phalanx fractures of the thumb.

[0046] Embodiment 1: Adjustable thumb distal elastic fixing device like Figure 1 and Figure 2 As shown, the adjustable thumb distal elastic fixing device of the present invention comprises an elastic membrane component 1 and a fixing ring 2. The elastic membrane component 1 has the shape of the distal end of the thumb, is hollowed out at the thumb nail part, and is connected to the elastic membrane component 1 and the fixing ring 2.

[0047] Specifically, the elastic membrane assembly 1 has a multi-layer structure, the inner part directly in contact with the patient's skin is a first elastic membrane 11, and the outer part is a second elastic membrane. The first elastic membrane 11 and the second elastic membrane are made of high elastic materials. In this embodiment, latex materials are selected. The second elastic membrane is Figure 1 In the outer part directly visible in the figure, an elastic reinforcing rib 12 is arranged between the first elastic membrane 11 and the second elastic membrane for clear presentation. Figure 3 The front structure of the elastic membrane assembly 1 after the second elastic membrane is peeled off is presented. Figure 4 The reverse structure of the elastic membrane assembly 1 after peeling off the second elastic membrane is presented, and it can be seen that a curved first elastic reinforcing rib 12 is arranged on the front side (i.e., on the same side as the hollowing out), surrounding the outer side of the hollowing out part, and a second elastic reinforcing rib 13 with a special structure is arranged on the reverse side (i.e., on the opposite side to the hollowing out), with a total of 5 branches extending from the side surface, the side bottom surface and the front bottom surface respectively, and merging at the end; the first elastic reinforcing rib 12 and the second elastic reinforcing rib 13 are both directly glued between the first elastic membrane 11 and the second elastic membrane. Since both are made of elastic material, latex material is selected in this embodiment. Under normal use conditions, that is, the force is within the range of elastic deformation, the first elastic reinforcing rib 12 and the second elastic reinforcing rib 13 do not undergo relative displacement between their gluing positions on the first elastic membrane 11 and the second elastic membrane.

[0048] like Figure 5As shown, the fixed finger ring 2 has a hollow structure. It is worth noting that the fixed finger ring 2 is made of flexible material and has a certain elasticity to adapt to different finger shapes. The inner side of the fixed finger ring 2 has roughness to facilitate the application of adhesive. The first elastic reinforcing rib 12 and the second elastic reinforcing rib 13 lead out a total of 7 connecting lines 121, wherein the first elastic reinforcing rib 12 is provided with 2 connecting lines 121, and the second elastic reinforcing rib 13 is provided with 5 connecting lines 121, each connecting line 121 is arranged at one end of each branch of the elastic reinforcing rib, and the side where the fixed finger ring 2 is connected to the elastic membrane assembly 1 is provided with 7 through holes 21, which correspond to the 7 connecting lines 121 respectively. A rotating adjustment member is provided on one side of the fixed finger ring 2, including a nut 22, a screw rod 23 and a damping block 24 connected in sequence. The nut 22 is provided with a cross pattern and can be rotated by a screwdriver. The A part of the fixed finger ring 2 is made of rigid material, so that the movement of the nut 22, the screw rod 23 and the damping block 24 can be supported. Figure 6 for Figure 5 The partially enlarged structural diagram of the middle A part shows that the screw rod 23 is connected to the seven connecting lines 121. When the screw rod 3 is rotated in one direction, the seven connecting lines 121 are all pulled and rotated. A damping groove 25 is also provided in the fixed finger ring 2, and its position and shape correspond to the damping block 24. The damping block 24 is a cylinder with a rough side surface, and the damping groove 25 is a cylindrical groove with a rough side wall, which is used to provide a certain friction force for easy adjustment.

[0049] The curing agent contained in the first elastic reinforcing rib 12 and the second elastic reinforcing rib 13 is a low-temperature thermoplastic material, the chemical name of which is trans-polyisoprene. It can be softened by soaking in hot water at 60-70°C. Only then can the elasticity be adjusted by pulling the connecting line 121. After the adjustment is completed, it can wait for 3-5 minutes for natural cooling or use a cold air gun to accelerate the cooling so that the low-temperature thermoplastic material is cooled and solidified.

[0050] Embodiment 2: Adjustable thumb distal elastic fixing device This embodiment is based on the adjustable thumb distal elastic fixing device of embodiment 1, and the difference is only in the internal structure of the elastic reinforcing ribs: Figure 7The structure of the first elastic reinforcing rib 12 after being straightened is presented. The first elastic reinforcing rib 12 includes connecting lines 121 at both ends and a curing cavity 122 in the middle. The material of the connecting line 121 is selected from nylon, which has poor elasticity. The outer part of the curing cavity 122 is made of latex material, which has good elasticity. The inner part is a chamber, which contains a first curing agent and a vesicle 123. The vesicle 123 contains a second curing agent. The number of vesicles 123 is 3, which are evenly distributed in the curing cavity 122. The diameter of the vesicle 123 is slightly larger than the inner diameter of the curing cavity 122, so that the position of the vesicle 123 will not be between the curing cavity under uniform force. Relative displacement occurs, and the shape of the vesicle 123 can be prominent outside the second elastic membrane. The material of the vesicle 123 is a brittle material. In this embodiment, gelatin and a plasticizer are selected for preparation. When lightly squeezed and squeezed, it breaks and releases the second curing agent in its content. The first curing agent and the second curing agent react and solidify. After the vesicle 123 is ruptured under pressure, the second curing agent in its content quickly and widely diffuses under the action of pressure, thereby accelerating the curing speed and improving the strength after curing. In this embodiment, the first curing agent is a liquid bisphenol A type epoxy resin, and the second curing agent is 2,3-dithio (2-mercapto) -1-propanethiol (CAS No. 131538-00-6). The mass ratio of the two is 10:1. After the vesicle 123 is squeezed and destroyed, due to slight differences in individual body surface temperatures, the first curing agent and the second curing agent can be cured in 30s to 3min at the body surface temperature. In this embodiment, no auxiliary agent is used. When relevant auxiliary agents are used for catalysis, the curing time can be further shortened, and when relevant fillers are used, the curing strength can be further increased.

[0051] Example 3: Fixing the nail groove and surrounding tissue using an adjustable thumb distal elastic fixation device First, take the thumb distal elastic fixing device as described in Example 1 with the corresponding specifications of the finger size of the paronychia patient, and first put it in warm water with a temperature preservation setting of 65°C to soften for 5 minutes. At this time, the low-temperature thermoplastic material is completely softened, take it out and wear it frontally (that is, the hollow part corresponds to the nail) and place the fixing ring 2 on the proximal knuckle of the patient's thumb, and try to pull it towards the base of the thumb to make the elastic membrane component 2 fit tightly with the nail. At this time, use an adhesive to bond the fixing ring 2 and the proximal knuckle of the patient's thumb. At this time, use a screwdriver to insert the nut 22 and rotate it in one direction until the patient feels that the distal knuckle of the thumb is tightly wrapped; use a cold air gun to blow the elastic membrane component The parts are held together until the low-temperature thermoplastic material is solidified and formed. At this time, the first elastic reinforcing ribs 12 and the second elastic reinforcing ribs 13 fix the nail groove and the surrounding tissue area from the upper and lower surfaces respectively. The first elastic reinforcing ribs 12 and the second elastic reinforcing ribs 13 divide the first elastic membrane 11 into a plurality of smaller areas and fix them in the corresponding areas. Due to the above-mentioned pulling process, the first elastic membrane 11 tightly wraps the nail groove and the surrounding tissue area, especially the part of the elastic membrane at the farthest end of the thumb between the first elastic reinforcing ribs 12 and the second elastic reinforcing ribs 13, which can inhibit the proliferation of soft tissue. During use, the condition of the nail can be observed from the hollow part to judge the treatment condition of paronychia.

[0052] After wearing it for a period of time, as the patient's paronychia is treated, the thumb distal elastic fixing device can be dynamically adjusted. The adjustment method is to soak the thumb wearing the fixing device in 60°C warm water to soften the low-temperature thermoplastic material, and then use a screwdriver to insert the nut 22 and rotate it to increase the tension of the first elastic reinforcing rib 12 and the second elastic reinforcing rib 13. Generally speaking, as the swelling subsides, the tension of the first elastic reinforcing rib 12 and the second elastic reinforcing rib 13 needs to be increased. After adjusting to the appropriate position, a cold air gun is used for rapid cooling, and the low-temperature thermoplastic material is solidified and shaped. At this time, the first elastic reinforcing rib 12 and the second elastic reinforcing rib 13 fix the nail groove and surrounding tissue areas from the upper and lower surfaces respectively.

[0053] When the device needs to be removed, since the first elastic reinforcement rib 12 and the second elastic reinforcement rib 13 are respectively arranged on the upper and lower sides of the thumb, the device can be directly cut along the elastic membrane on the side of the thumb using scissors and discarded. As for the adhesive that fixes the finger ring 2 to the proximal knuckle of the patient's thumb, a disintegrating agent can be used to remove it.

[0054] Example 4: Fixation of the distal phalanx fracture area using an adjustable thumb distal elastic fixation device First, take the thumb distal elastic fixation device of Example 2 with specifications corresponding to the finger size of the patient with distal phalanx fracture, and wear it on the reverse side (that is, the hollow part is on the opposite side of the nail). The reason for wearing it on the reverse side is that the part containing more elastic reinforcing rib branches is set above the distal phalanx fracture area (on the side of the finger nail). Distal phalanx fractures usually present as a drooping finger, that is, the distal phalanx droops, so more elastic reinforcing rib branches are used to pull from the top to adjust the phalanx to return to its original position.

[0055] The fixing ring 2 is placed on the proximal knuckle of the patient's thumb, and is pulled toward the base of the thumb as much as possible to make the elastic membrane assembly 2 fit tightly with the distal knuckle of the thumb. At this time, an adhesive is used to bond the fixing ring 2 and the proximal knuckle of the patient's thumb. At this time, a screwdriver is used to insert the nut 22 and rotate it in one direction until the patient feels that the distal knuckle of the thumb is tightly wrapped. Since the diameter of the vesicle 123 is slightly larger than the inner diameter of the elastic reinforcing rib, the shape of the vesicle 123 after stretching is prominent outside the second elastic membrane. At this time, the vesicle 123 is manually destroyed in a direction parallel to the surface of the second elastic membrane to release the second curing agent. The first curing agent and the second curing agent react and cure rapidly inside the curing cavity 122, so that the first elastic reinforcing rib 12 and the second elastic reinforcing rib 12 are bonded to each other. The reinforcing ribs 13 are hardened, and the screwdriver can be loosened after the hardened elastic reinforcing ribs play a fixing role. At this time, the first elastic reinforcing ribs 12 and the second elastic reinforcing ribs 13 as a whole fix the distal phalanx of the thumb from above, above, side and below the distal phalanx of the thumb. Due to the relative lack of elastic force below during the above-mentioned traction process, the vertical finger is mainly pulled from above to restore its original position. Due to the curing process, the elastic reinforcing ribs are hardened at this time and reach a relatively high strength. At the same time, the elastic reinforcing ribs are directly connected to the fixing ring on the proximal phalanx of the patient's thumb, so that the distal phalanx fracture area, joints and proximal phalanx are relatively fixed. Under the action of external forces encountered in daily life, the elastic reinforcing ribs can protect the distal phalanx fracture area.

[0056] When the device needs to be removed, since the first elastic reinforcement rib 12 and the second elastic reinforcement rib 13 are respectively arranged on the upper and lower sides of the thumb, the device can be directly cut along the elastic membrane on the side of the thumb using scissors and discarded. As for the adhesive that fixes the finger ring 2 to the proximal knuckle of the patient's thumb, a disintegrating agent can be used to remove it.

[0057] Finally, a few points should be explained: First, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, and can be mechanical or electrical connections, or internal connectivity between two components, or direct connections. "Up", "down", "left" and "right" are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may change; secondly, in the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other; finally, the above description is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An adjustable elastic fixing device for small joints of the extremities, characterized in that: It includes a fixed finger ring and an elastic membrane component, the fixed finger ring is connected to the elastic membrane component, the elastic membrane component includes a first elastic membrane, an elastic reinforcing rib and a second elastic membrane, the elastic membrane component includes two or more elastic reinforcing ribs, the elastic reinforcing ribs are arranged and fixed between the first elastic membrane and the second elastic membrane, and a curing agent is arranged in the elastic reinforcing ribs.

2. An adjustable elastic fixing device for small extremity joints as claimed in claim 1, characterized in that: The elastic membrane component has the shape of a distal end of a finger or a toe, and the elastic membrane component is provided with a hollow.

3. An adjustable elastic fixing device for small extremity joints as claimed in claim 2, characterized in that: The fixed finger ring has a hollow structure, and the fixed finger ring includes a rotation adjustment piece. One end of the elastic reinforcement rib is arranged in the hollow structure of the fixed finger ring, and one end of the elastic reinforcement rib is connected to the rotation adjustment piece.

4. An adjustable elastic fixation device for small extremity joints as claimed in claim 1 or 2, characterized in that: The elastic reinforcing rib comprises a curing cavity, which is a cavity body composed of elastic material, and a curing agent is arranged in the curing cavity.

5. An adjustable elastic fixation device for small extremity joints as claimed in claim 4, characterized in that: The curing agent includes a low temperature thermoplastic material.

6. The adjustable elastic fixing device for small extremity joints according to claim 4, characterized in that: The curing agent includes a first curing agent and a second curing agent, and the first curing agent and the second curing agent are cured by a chemical reaction. The first curing agent and vesicles are arranged in the curing cavity, and the second curing agent is arranged in the vesicles.

7. An adjustable elastic fixation device for small extremity joints as claimed in claim 6, characterized in that: The first curing agent includes epoxy resin, and the second curing agent includes thiol.

8. The adjustable elastic fixing device for small extremity joints according to claim 2, characterized in that: The elastic reinforcement rib includes a first elastic reinforcement rib and a second elastic reinforcement rib, the first elastic reinforcement rib is arranged on one side of the hollow, and the second elastic reinforcement rib is arranged on the opposite side of the hollow; the first elastic reinforcement rib includes a first branch and a second branch, one ends of the first branch and the second branch converge on the outside of the hollow, and the other ends of the first branch and the second branch are respectively arranged on the upper left and upper right sides of the fixed finger ring; the second elastic reinforcement rib includes a third branch, a fourth branch, a fifth branch, a sixth branch and a seventh branch, one ends of the third branch, the fourth branch, the fifth branch, the sixth branch and the seventh branch converge at the distal end of the elastic membrane assembly, and the other ends of the third branch, the fourth branch, the fifth branch, the sixth branch and the seventh branch are respectively arranged on the left side, the lower left side, the lower side, the lower right side and the right side of the fixed finger ring.

9. Use of the adjustable elastic fixation device for small extremity joints as claimed in any one of claims 1 to 8 in treating or preventing ingrown toenail paronychia or onychomycosis caused by soft tissue hyperplasia of paronychia or distal nail loss.

10. Use of the adjustable elastic fixation device for small extremity joints as claimed in any one of claims 1 to 8 in treating distal fractures of fingers or toes.

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