A resilient fixation brace for finger flexor tendon injury

Abstract

The present invention provides a resilient finger flexor tendon injury fixation brace, which belongs to the technical field of medical devices. It mainly includes a fixing belt for fixing the finger and a rotation limiting structure for limiting the rotation angle of the finger joint; the fixing belt is connected to the rotation limiting structure, and the fixing belt is divided into an upper fixing belt and a lower fixing belt, and the upper fixing belt and the lower fixing belt are connected through the rotation limiting structure; the lower fixing belt is installed with an elastic contraction structure for assisting finger flexion, and the elastic contraction structure is connected to the upper fixing belt. The present invention can limit the angle of finger flexion by setting a rotation limiting structure, and different limiting angles can be selected, which is suitable for different degrees of finger flexion training; an elastic contraction structure is also provided, and the size of the elastic force is adjusted by adjusting the length of the elastic line, thereby changing the intensity of passive flexion of the finger.

Description

Technical Field

[0001] The present invention relates to the technical field of medical appliances, and in particular to a resilient fixation brace for finger flexor tendon injury. Background Art

[0002] Finger flexor tendon cuts are common clinical diseases. After surgery, the fingers generally need to be fixed in the flexed position for three weeks. Functional exercises are required every day within three weeks to prevent tendon adhesion. The ruptured tendon cannot actively contract to prevent re-rupture, and can only passively move the injured tendon, that is, actively straighten and passively flex the fingers. General fixation such as plaster or braces are rigid fixations, which need to be removed every day, and functional exercises must be guided by medical staff. After exercise, they must be re-fixed, which is extremely inconvenient. In addition, some patients have low cooperation and insufficient understanding ability, and cannot fully cooperate with normal functional exercises, which can easily cause complications of tendon rupture again.

[0003] The Chinese invention patent with the announcement number CN208808784U discloses a finger joint fixing device, comprising a first fixing unit, a second fixing unit and at least one elastic member. The first fixing unit comprises a first wearable body suitable for finger insertion and a first connecting plate located on one side of the first wearable body and extending in the insertion direction. The second fixing unit comprises a second wearable body suitable for finger insertion and a second connecting plate extending from the second wearable body toward the first fixing unit and pivotally connected to the first connecting plate, and the first connecting plate and the second connecting plate are hard structures. The two ends of the elastic member are respectively connected to the first fixing unit and the second fixing unit, and the elastic member can be bent and tends to be restored to a straight state extending in the insertion direction, so that the second fixing unit can be restored to a state extending in the same insertion direction as the first fixing unit after pivoting relative to the first fixing unit. The invention can assist in pulling back the patient's bent fingers, but cannot perform active straightening and passive flexion of the fingers, and cannot perform finger rehabilitation training well. Summary of the invention

[0004] The purpose of the invention is to provide a resilient finger flexor tendon injury fixation brace to address the above-mentioned problems. The resilient finger flexor tendon injury fixation brace can solve the patient's passive activities of the injured tendon, that is, active straightening and passive flexion of the fingers, by setting an elastic contraction structure, and can limit the finger flexion angle by rotating a limiting structure.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0006] A resilient finger flexor tendon injury fixation brace, mainly comprising a fixing belt for surrounding and fixing on a finger and two rotation limiting structures for limiting the rotation angle of a finger joint; the length of the fixing belt is adjustable, the fixing belt is divided into an upper fixing belt and a lower fixing belt, the upper fixing belt and the lower fixing belt are respectively fixed on both sides of a proximal finger joint, the upper fixing belt and the lower fixing belt are used to fix a rotation limiting mechanism located in the middle, the rotation limiting structure mainly comprises a limiting block, a connecting rod, an upper rod, a lower rod, and a fixing nut; the limiting block is cylindrical in shape, the limiting block is provided with a cylindrical cavity along the axial direction, the axis of the cavity coincides with the axis of the limiting block, the limiting block is provided with a threaded hole from the end face along the axial direction, the threaded hole is connected to the cavity, the side surface of the limiting block is symmetrically provided with two through grooves at intervals, each of the through grooves forms a rotating step on the side wall of the limiting block, the two rotating steps are fan-shaped and gradually descend along the annular side wall of the limiting block, and the two The upper surface area of ​​each step of the rotating ladder increases step by step from top to bottom, and the shorter sides of the two rotating steps are away from each other, and the taller sides are close to each other; one end of the upper rod and one end of the lower rod enter the cavity structure through different through grooves respectively; the connecting rod enters the cavity structure through the threaded hole connected with the limit block, and passes through the rotating shaft hole opened at one end of the upper rod and one end of the lower rod in the cavity structure respectively, so that the upper rod and the lower rod are rotatably connected in the cavity structure of the limit block, and the upper rod and the lower rod are respectively abutted and rotated on different steps of the rotating ladder for rotation and limitation; the other end of the upper rod and the other end of the lower rod are penetrated outside the limit block, and the other end of the upper rod is connected with the upper fixing belt, and the other end of the lower rod is connected with the lower fixing belt, and the two rotation limiting structures are respectively connected to the left and right sides of the fixing belt, and the fixing belt and the finger are driven to rotate through the rotation of the upper rod and the lower rod; an elastic contraction structure assisting the finger from the straight state to the flexion is also provided between the upper fixing belt and the lower fixing belt.

[0007] Furthermore, the elastic contraction structure mainly includes an outer shell, a protective cover, a coil fixing block, and an elastic line; the outer shell is fixedly installed in the middle part of the lower fixing belt and is located on the bending surface of the finger; the outer shell is a cavity structure with an opening at one end, the protective cover covers the open end of the outer shell, a rotating rod is provided in the cavity structure in a direction perpendicular to the end face, a through hole is provided in the direction perpendicular to the end face of the coil fixing block, the rotating rod passes through the through hole to fix the coil fixing block in the outer shell, and the coil fixing block rotates around the rotating rod; a protrusion is provided at the upper end of the coil fixing block and at a position perpendicular to the side surface, a plurality of notches are evenly provided at the open end of the outer shell, the coil fixing block is fixed to the outer shell by the engagement of the protrusion and the notch, so that the coil fixing block does not rotate, the elastic line is wrapped around the side of the coil fixing block, a wire hole is provided on the outer shell, the wire hole passes straight through from the inner side surface of the outer shell to the outer side surface of the outer shell, and the opening of the wire hole faces the upper fixing belt, and the free end of the elastic line passes through the wire hole and is connected to the upper fixing belt.

[0008] Furthermore, a fixing block is provided at one end of the connecting rod located inside the limit block to prevent the upper rod and the lower rod from falling out, and a rotating disk is provided at the other end of the connecting rod located outside the limit block for rotating the connecting rod; the connecting rod portion close to the fixing block is a smooth rod, and the other portions are threaded rods, and the connecting rod is threadedly connected with a fixing nut, so that the upper rod and the lower rod are rotatably connected at the portion of the smooth rod between the fixing block and the fixing nut.

[0009] Furthermore, the fixing belt is provided with Velcro, and the fixing belt is adhered and fixed on the finger by Velcro.

[0010] Furthermore, the fixing belt is provided with a Japanese-shaped buckle, and the length of the fixing belt is adjusted by the Japanese-shaped buckle structure.

[0011] Furthermore, the fixing belt is made of inelastic soft material.

[0012] Furthermore, two plug-in pockets are respectively provided on the upper fixing belt and the lower fixing belt. The plug-in pockets are arranged on the outside of the fixing belt. The plug-in pockets and the fixing belt form a receiving cavity. The free ends of the upper rod and the lower rod are plugged into the receiving cavity of the plug-in pockets.

[0013] Furthermore, one end of the upper rod and the lower rod that are rotatably connected are embedded with each other, and the axes of the rotation shaft holes of the upper rod and the lower rod coincide.

[0014] Furthermore, the rotation limiting structure is made of hard material.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0016] 1. The present invention can limit the angle of finger flexion by setting a rotation limit structure. The through groove opened in the limit block and the rotating step formed by the side wall of the limit block can select different limit angles, which is suitable for different degrees of finger flexion training; an elastic contraction structure is also provided, and the size of the elastic force is adjusted by adjusting the length of the elastic line, thereby changing the intensity of passive flexion of the finger.

[0017] 2. The present invention is provided with a fixing belt with adjustable length, so as to be suitable for patients with different finger thicknesses.

[0018] 3. The present invention fixes the positions of the upper rod and the lower rod on the connecting rod by setting a fixing nut and a fixing block, so that the contact positions of the upper rod, the lower rod and the limiting block are fixed, thereby enhancing the stability of the fixing brace. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a planar structure provided by an embodiment of the present invention.

[0020] Figure 2 It is a front view of the planar structure provided by an embodiment of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the rotation limiting structure provided in an embodiment of the present invention.

[0022] Figure 4 It is a left view of the rotation limiting structure provided by an embodiment of the present invention.

[0023] Figure 5 It is a schematic diagram of the connection between the connecting rod and the upper rod and the lower rod provided in an embodiment of the present invention.

[0024] Figure 6 It is a partial cross-sectional view of the limit block provided in the embodiment of the present invention.

[0025] Figure 7 It is a front view of the elastic contraction structure provided by an embodiment of the present invention.

[0026] Figure 8 It is a top view of the elastic contraction structure provided by an embodiment of the present invention.

[0027] Fig. 9 It is a schematic diagram of the structure of the fixing belt provided by the embodiment of the present invention.

[0028] Among them, 1 is a finger, 2 is a lower fixing strap, 2-1 is a Velcro, 3 is an upper fixing strap, 4 is an upper rod, 5 is a rotating disk, 6 is an elastic line, 7 is an outer shell, 7-1 is a wire hole, 7-2 is a rotating rod, 8 is a lower rod, 9 is a limit block, 9-1 is a first limit layer, 9-2 is a second limit layer, 9-3 is a third limit layer, 9-4 is a through slot, 10 is a coil fixing block, 11 is a cover, 12 is a connecting rod, 13 is a fixing block, 14 is a fixing nut, and 15 is a plug-in bag. DETAILED DESCRIPTION

[0029] In order to express the present invention more clearly, the present invention is further described below through specific examples.

[0030] Specific embodiment 1, as shown in the figure, is a preferred embodiment of the present invention, a resilient finger flexor tendon injury fixation brace, mainly including a fixing belt for surrounding and fixing on the finger and two rotation limiting structures for limiting the rotation angle of the finger joint; the length of the fixing belt is adjustable, and the fixing belt is divided into an upper fixing belt 3 and a lower fixing belt 2, and the upper fixing belt 3 and the lower fixing belt 2 are respectively fixed on both sides of the proximal finger joint, and the upper fixing belt 3 and the lower fixing belt 2 are used to fix the rotation limiting mechanism located in the middle, and the rotation limiting structure is provided with two, and is symmetrical about the finger. Figure 3~Figure 6As shown, the rotation limit structure mainly includes a limit block 9, a connecting rod 12, an upper rod 4, a lower rod 8, and a fixing nut 14. The limit block 9 is cylindrical in shape, and a cylindrical cavity is arranged inside the limit block 9 along the axial direction. The axis of the cavity coincides with the axis of the limit block 9. The limit block 9 is provided with a threaded hole from the end face along the axial direction, and the threaded hole is connected to the cavity. Two through grooves 9-4 are symmetrically arranged on the side of the limit block 9, and each through groove 9-4 forms a rotating step on the side wall of the limit block 9. The two rotating steps are fan-shaped and gradually descend along the annular side wall of the limit block 9, which are the first limit layer 9-1, the second limit layer 9-2, and the third limit layer 9-3. The upper surface area of ​​each step of the two rotating steps increases step by step from top to bottom. The shorter sides of the two rotating steps are away from each other, that is, the third limiting layers 9-3 are away from each other, and the taller sides are close to each other, that is, the first limiting layers 9-1 are close to each other. One end of the upper rod 4 and one end of the lower rod 8 enter the cavity structure through different through grooves 9-4 respectively; the connecting rod 12 enters the cavity structure by being connected with the threaded hole of the limit block 9, and passes through the rotating shaft holes opened at one end of the upper rod 4 and one end of the lower rod 8 in the cavity structure, so that the upper rod 4 and the lower rod 8 are rotatably connected in the cavity structure of the limit block 9, and the upper rod 4 and the lower rod 8 are respectively abutted and rotated on different levels of the rotary ladder for rotational limitation; the other end of the upper rod 4 and the other end of the lower rod 8 are penetrated outside the limit block 9, and the other end of the upper rod 4 is connected to the upper fixing belt 3, and the other end of the lower rod 8 is connected to the lower fixing belt 2, and the two rotation limiting structures are respectively connected to the left and right sides of the fixing belt, and the rotation of the upper rod 4 and the lower rod 8 drives the fixing belt and the fingers to rotate; an elastic contraction structure is also provided between the upper fixing belt 3 and the lower fixing belt 2 to assist the fingers from the straight state to the flexion.

[0031] Furthermore, the elastic contraction structure mainly includes a shell 7, a protective cover 11, a coil fixing block 10, and an elastic line 6. The shell 7 is fixedly installed in the middle of the lower fixing belt 2 and is located on the bending surface of the finger; the shell 7 is a cavity structure with one end open. The protective cover 11 covers the open end of the shell 7, and a rotating rod 7-2 is provided at the bottom of the cavity structure in a direction perpendicular to the end face of the open end. The coil fixing block 10 is provided with a through hole in a direction perpendicular to the end face. The rotating rod 7-2 passes through the through hole to fix the coil fixing block 10 in the shell, and the coil fixing block 10 rotates around the rotating rod 7-2; a protrusion 10-1 is provided at the upper end of the coil fixing block 10 and at a position perpendicular to the side surface, and a plurality of notches are evenly provided at the open end of the shell 7. The coil fixing block 10 is fixed to the shell 7 by the engagement of the protrusion 10-1 with the notch, so that the coil fixing block 10 does not rotate. The elastic wire 6 is wrapped around the side of the coil fixing block 10, and a wire hole 7-1 is provided on the shell 7. The wire hole 7-1 passes straightly from the inner side of the shell to the outer side of the shell 7, and the opening of the wire hole 7-1 faces the upper fixing belt. The free end of the elastic wire 6 passes through the wire hole 7-1 and is connected and fixed to the upper fixing belt 3. The elastic wire 6 can be wrapped around the upper fixing belt 3 by binding. The elastic force is adjusted by rotating the coil fixing block 10 to adjust the connection length between the elastic wire 6 and the upper fixing belt 3. When the patient's fingers are actively stretched, the elastic wire 6 is stretched. When the patient does not stretch his fingers, the fingers are passively flexed under the action of the elastic wire 6. After the coil fixing block 10 is moved outward away from the shell 7, the coil fixing block 10 is rotated to select an elastic wire 6 of a suitable length, and then the coil fixing block 10 is put back into the shell 7 so that the protrusion 10-1 on the coil fixing block 10 is engaged in the notch on the shell 7, so that the length of the elastic wire 6 is fixed and the elastic force generated is also fixed. Finally, the protective cover 11 is closed on the opening of the housing 7 to prevent the coil fixing block 10 from being separated from the housing 7. Further preferably, the fixing belt is made of a non-elastic soft material to prevent the fixing belt from deforming and reducing the elastic force when the elastic force of the elastic line 6 contracts, thereby failing to achieve the training effect of passive flexion of the fingers.

[0032] Further preferably, two plug-in pockets 15 are respectively provided on the upper fixing belt and the lower fixing belt, and the plug-in pockets 15 are arranged on the outside of the fixing belt. The plug-in pockets 15 and the fixing belt form a receiving cavity, and the other ends of the upper rod 4 and the lower rod 8, i.e., the free ends, are respectively plugged into the receiving cavities of the plug-in pockets 15, so that the upper rod 4 and the lower rod 8 are respectively fixed on the fixing belt. According to the degree of finger flexion training, the connecting rod 12 is rotated so that the connecting rod 12 is in a fan-shaped layer with different step layers, and the upper rod 4 and the lower rod 8 are abutted against the fan-shaped edge to make the rotation angle different, so that the degree of finger flexion is different, so as to achieve different degrees of flexion training.

[0033] Further preferably, one end of the connecting rod 12 located inside the limit block 9 is provided with a fixing block 13 to prevent the upper rod 4 and the lower rod 8 from falling out, and the other end of the connecting rod 12 located outside the limit block 9 is provided with a rotating disk 5 for rotating the connecting rod 12. The connecting rod portion close to the fixing block 13 is a smooth rod, and the other portions are threaded rods. The connecting rod 12 is threadedly connected with the fixing nut 14, so that the upper rod 4 and the lower rod 8 are rotatably connected at the smooth rod portion between the fixing block 13 and the fixing nut 14. The connecting rod 12 is connected with the threaded hole of the limit block 9, so that the upper rod 4 and the lower rod 8 fixed on the connecting rod 12 can move up and down in the cavity of the limit block 9, so that the upper rod 4 and the lower rod 8 are located in the position of the fan-shaped layer column of different layers in the limit block 9.

[0034] Further preferably, one end of the upper rod 4 and the lower rod 8 that are rotatably connected fits with each other, and the axes of the rotational holes of the upper rod 4 and the lower rod 8 coincide, so that the upper rod 4 and the lower rod 8 fit with each other, saving space.

[0035] Further preferably, the rotation limiting structure is made of a hard material to ensure that the rotation limiting structure can be used normally and will not be deformed during the bending process of the finger.

[0036] Further preferably, in order to make the fixing belt suitable for patients with different finger thicknesses, the length of the fixing belt is set to be adjustable. The fixing belt is provided with Velcro, and the fixing belt is fixed on the finger 1 by Velcro. The structures of the upper fixing belt and the lower fixing belt are consistent. One end of the lower fixing belt 2 is first wrapped around the finger and fixed to the body of the lower fixing belt 2 by Velcro 2-1, and the other end is wrapped around the finger once and then fixed to the body of the lower fixing belt 2 by Velcro 2-1, so that the fixing belt can be fixed on the finger 1 without strangling the finger.

[0037] When the present invention is implemented, first, the lower fixing belt 2 is fixed to the fingers on both sides of the finger joints of the patient who needs to be trained by Velcro, the lower rod 8 of the rotation limiting structure is inserted into the plug-in bag 15 on the lower fixing belt 2, and then the upper rod 4 is inserted into the plug-in bag 15 of the upper fixing belt 3. The length of the elastic line 6 is adjusted according to the degree of rehabilitation training of the patient's fingers to adjust the size of the contraction force of the elastic line 6 to adjust the intensity of finger flexion. The position of the upper rod 4 and the lower rod 8 connected to the connecting rod 12 is adjusted by rotating the rotating disk 5 to connect the connecting rod 12 with the threaded hole of the limiting block 9, so that the upper rod 4 and the lower rod 8 are located in different fan-shaped layers, so that the rotation angle of the upper rod 4 and the lower rod 8 is limited, so that the degree of finger flexion is limited. The purpose of training different degrees of finger flexion is achieved.

[0038] In the second specific embodiment, the fixing belt is provided with a Japanese-shaped buckle, and the length of the fixing belt is adjusted by the Japanese-shaped buckle structure, which is similar to the length adjustment structure on the safety belt, and the fixing effect is better.

[0039] The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modified changes completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A resilient fixation brace for finger flexor tendon injury, characterized in that: The invention relates to a rotation limiting structure for limiting the rotation angle of the finger joint by means of a fixing belt for surrounding and fixing on the finger and two rotation limiting structures for limiting the rotation angle of the finger joint; the length of the fixing belt is adjustable, the fixing belt is divided into an upper fixing belt and a lower fixing belt, the upper fixing belt and the lower fixing belt are respectively fixed on both sides of the proximal finger joint, the upper fixing belt and the lower fixing belt are used to fix the rotation limiting mechanism located in the middle, the rotation limiting structure mainly comprises a limiting block, a connecting rod, an upper rod, a lower rod, and a fixing nut; the limiting block is cylindrical in shape, the limiting block is provided with a cylindrical cavity along the axial direction, the axis of the cavity coincides with the axis of the limiting block, the limiting block is provided with a threaded hole from the end face along the axial direction, the threaded hole is connected with the cavity, the side surface of the limiting block is symmetrically provided with two through grooves, each of the through grooves forms a rotating step on the side wall of the limiting block, the two rotating steps are fan-shaped and gradually descend along the annular side wall of the limiting block, and the two rotating steps The top surface area of ​​each layer of stairs increases step by step from top to bottom, and the shorter sides of the two rotating stairs are away from each other, and the higher sides are close to each other; one end of the upper rod and one end of the lower rod enter the cavity structure through different through grooves respectively; the connecting rod enters the cavity structure through the threaded hole of the limit block, and passes through the rotating shaft hole opened at one end of the upper rod and one end of the lower rod in the cavity structure respectively, so that the upper rod and the lower rod are rotatably connected in the cavity structure of the limit block, and the upper rod and the lower rod are respectively abutted and rotated on different layers of the stairs of the rotating staircase for rotation and limitation; the other end of the upper rod and the other end of the lower rod are penetrated outside the limit block, and the other end of the upper rod is connected to the upper fixing belt, and the other end of the lower rod is connected to the lower fixing belt, and the two rotating limiting structures are respectively connected to the left and right sides of the fixing belt, and the fixing belt and the finger are driven to rotate through the rotation of the upper rod and the lower rod; an elastic contraction structure assisting the finger from the straight state to the flexion is also provided between the upper fixing belt and the lower fixing belt; The elastic contraction structure mainly comprises a shell, a protective cover, a coil fixing block and an elastic line; the shell is fixedly installed in the middle part of the lower fixing belt and is located on the bending surface of the finger; the shell is a cavity structure with an opening at one end, the protective cover covers the open end of the shell, a rotating rod is provided in the cavity structure in a direction perpendicular to the end face, a through hole is provided in the direction perpendicular to the end face of the coil fixing block, the rotating rod passes through the through hole to fix the coil fixing block in the shell, and the coil fixing block rotates around the rotating rod; a convex block is provided at the upper end part and the vertical side of the coil fixing block, a plurality of notches are evenly provided at the open end of the shell, the coil fixing block is fixed to the shell by the engagement of the convex block and the notch, so that the coil fixing block does not rotate, the elastic line is wrapped around the side of the coil fixing block, a wire hole is provided on the shell, the wire hole passes straight through from the inner side of the shell to the outer side of the shell, and the opening of the wire hole faces the upper fixing belt, and the free end of the elastic line passes through the wire hole and is connected to the upper fixing belt; One end of the connecting rod located inside the limit block is provided with a fixing block to prevent the upper rod and the lower rod from falling out, and the other end of the connecting rod located outside the limit block is provided with a rotating disk for rotating the connecting rod; the connecting rod portion close to the fixing block is a smooth rod, and the other portions are threaded rods, and the connecting rod is threadedly connected with a fixing nut, so that the upper rod and the lower rod are rotatably connected at the portion of the smooth rod between the fixing block and the fixing nut.

2. The resilient finger flexor tendon injury fixation brace according to claim 1, characterized in that: The fixing belt is provided with Velcro, and the fixing belt is adhered and fixed on the finger by the Velcro.

3. The resilient finger flexor tendon injury fixation brace according to claim 1, characterized in that: The fixing belt is provided with a Japanese-shaped buckle, and the length of the fixing belt is adjusted through the Japanese-shaped buckle structure.

4. The resilient finger flexor tendon injury fixation brace according to claim 1, characterized in that: The fixing belt is made of inelastic soft material.

5. The resilient finger flexor tendon injury fixation brace according to claim 1, characterized in that: The upper fixing belt and the lower fixing belt are respectively provided with two plug-in pockets, the plug-in pockets are arranged on the outside of the fixing belt, the plug-in pockets and the fixing belt form a receiving cavity, and the free ends of the upper rod and the lower rod are plugged into the receiving cavity of the plug-in pockets.

6. The resilient finger flexor tendon injury fixation brace according to claim 1, characterized in that: One end of the upper rod and the lower rod being rotatably connected are embedded with each other, and the axes of the rotating shaft holes of the upper rod and the lower rod are coincident.

7. The resilient finger flexor tendon injury fixation brace according to claim 1, characterized in that: The rotation limiting structure is made of hard material.

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