CN111228026A - Recoverable fixing brace for flexor tendon injury - Google Patents

Abstract

The invention provides a resilient fixation brace for finger flexor tendon injury, belonging to the technical field of medical appliances. It mainly includes a fixed belt for fixing fingers and a rotation limit structure for limiting the rotation angle of finger joints; the fixed belt is connected with the rotation limit structure, and the fixed belt is divided into an upper fixed belt and a lower fixed belt, so The upper fixing belt and the lower fixing belt are connected through a rotation limiting structure; the lower fixing belt is provided with an elastic contraction structure for assisting finger flexion, and the elastic contraction structure is connected with the upper fixing belt. The invention can limit the angle of finger flexion by setting the rotation limit structure, and can choose different limit angles, which is suitable for finger flexion training of different degrees; and also sets the elastic force contraction structure, and adjusts the elastic force by adjusting the length of the elastic line , which in turn changes the strength of passive flexion of the fingers.

Description

A resilient fixation brace for finger flexor tendon injury

【Technical field】

The invention relates to the technical field of medical appliances, in particular to a resilient fixation support for flexor tendon injuries.

【Background technique】

Finger flexor tendon cutting injury is a common clinical disease. Generally, it needs to be fixed for three weeks after surgery. Functional exercises are required every day for three weeks to prevent tendon adhesion. The ruptured tendon cannot be actively contracted to prevent re-rupture. Active, i.e. active extension and passive flexion of the fingers. General immobilization such as casts or braces are rigid immobilizations, which require removal of immobilization every day, functional exercises guided by medical staff, and re-immobilization after exercise, which is extremely inconvenient, and some patients have low cooperation and lack of understanding, so they cannot fully cooperate. Normal functional exercise can easily lead to complications of tendon rupture again.

The Chinese invention patent with the publication number CN208808784U discloses a finger joint fixing device, which includes a first fixing unit, a second fixing unit and at least one elastic piece. The first fixing unit includes a first wearing body suitable for fingers to penetrate, and a first connecting plate located on one side of the first wearing body and extending along the extending direction. The second fixing unit includes a second wearing body suitable for finger penetration, and a second connecting plate extending from the second wearing body toward the first fixing unit and pivotally connected to the first connecting plate. The first connecting plate and the first connecting plate The second link plate is a rigid structure. The two ends of the elastic piece are respectively connected to the first fixing unit and the second fixing unit, the elastic piece can be bent and tend to return to the straight state extending along the extending direction, so that the second fixing unit is fixed relative to the first fixing unit After the unit is pivoted, it returns to the same state of extending along the extending direction as the first fixing unit. The invention can assist in pulling back the bent fingers of the patient, but cannot perform the actions of actively straightening and passively flexing the fingers, and cannot perform the rehabilitation training of the fingers well.

[Content of the invention]

The purpose of the invention of the present invention is to: in view of the above-mentioned problems, to provide a reboundable flexor digitorum tendon injury fixation device, which can solve the passive problem of the patient's tendon injury by setting the elastic expansion and contraction structure. Activity, that is, the action of actively straightening and passively flexing the fingers, and also limiting the flexion angle of the fingers by rotating the limiting structure.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

A resilient fixation brace for finger flexor tendon injury mainly comprises a fixing band used to surround and fix on fingers and two rotation limiting structures for limiting the rotation angle of finger joints; the length of the fixing band is adjustable Yes, 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, and the upper fixing belt and the lower fixing belt are used for fixing in the middle The rotation limit mechanism mainly includes a limit block, a connecting rod, an upper rod, a lower rod, and a limit nut; the shape of the limit block is a cylinder, and the limit block is along the axis direction. There is a cylindrical cavity inside, the axis of the cavity coincides with the axis of the limit block, the limit block is provided with a threaded hole from the end face along the axis direction, the threaded hole is communicated with the cavity, the limit block There are two through grooves symmetrically spaced on the side of the limit block, each of the through grooves makes the side wall of the limit block form a rotary step, and the two rotary steps are fan-shaped along the annular side wall of the limit block. The steps descend, and the upper surface area of each layer of the two rotary steps increases step by step from top to bottom, the shorter sides of the two rotary steps are far 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 connection with the threaded hole of the limit block, and passes through the upper rod respectively in the cavity structure One end of the rod and one end of the lower rod are provided with a rotating shaft hole, 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 rotary ladder. The rotation limit is performed on the ladder; 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. , the two rotation limiting structures are respectively connected to the left and right sides of the fixed belt, and the rotation of the upper rod and the lower rod drives the fixed belt and the fingers to rotate; there is also an auxiliary finger extension between the upper fixed belt and the lower fixed belt. Elastically contracted structure until state to buckling.

Further, the elastic shrinkage structure mainly includes a casing, a protective cover, a coil fixing block, and an elastic wire; the casing is fixedly installed in the middle of the lower fixing belt, and is located on the curved surface of the finger; the casing is a cavity structure with one end open, The protective cover is closed on the open end of the casing, and a rotating rod is arranged in the vertical direction of the end face in the cavity structure. Fixed in the casing, the coil fixing block rotates around the rotating rod; the upper end of the coil fixing block and the position of the vertical side are provided with bumps, and the open end of the casing is evenly provided with a number of notches, through the bumps The fitting with the notch fixes the coil fixing block on the casing, so that the coil fixing block does not rotate, the elastic wire is wrapped around the side of the coil fixing block, and the casing is provided with a wire hole, and the wire hole extends from the outer casing of the casing. The inner side goes straight out to the outer side of the casing, and the opening of the wire hole faces the upper fixing belt, and the free end of the elastic thread is connected to the upper fixing belt after passing through the wire hole.

Further, 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 coming 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 part of the fixing block is a smooth rod, and the other parts are threaded rods. The connecting rod is threadedly connected with the fixing nut, so that the upper rod and the lower rod are rotatably connected at the smooth rod part between the fixing block and the fixing nut.

Further, a Velcro is provided on the fixing tape, and the fixing tape is pasted and fixed on the finger through the Velcro.

Further, a sun-shaped buckle is arranged on the fixing belt, and the length of the fixing belt is adjusted through the sun-shaped buckle structure.

Further, the fixing belt is an inelastic soft material fabric.

Further, two insertion pockets are respectively provided on the upper fixing belt and the lower fixing belt, the insertion pockets are arranged on the outer side of the fixing belt, the insertion pockets and the fixing belt form a accommodating cavity, and the upper rod and the free end of the lower rod is inserted into the accommodating cavity of the insertion pocket.

Further, one end of the rotational connection of the upper rod and the lower rod is fitted with each other, and the axes of the rotation shaft holes of the upper rod and the lower rod are coincident.

Further, the rotation limiting structure is made of hard material.

To sum up, due to the adoption of the above-mentioned technical solutions, the beneficial effects of the present invention are:

1. The present invention can limit the angle of finger flexion by setting the rotation limit structure. The through slot opened in the limit block and the rotary ladder formed by the side wall of the limit block can choose different limit angles, which are suitable for different The finger flexion training of the degree; also set the elastic contraction structure, by adjusting the length of the elastic line, to adjust the size of the elastic force, and then change the intensity of passive flexion of the fingers.

2. The present invention is provided with a fixed belt whose length can be adjusted, and is suitable for patients with different finger thicknesses.

3. The present invention fixes the position of the upper rod and the lower rod on the connecting rod by setting the fixing nut and the fixing block, so that the contact position of the upper rod, the lower rod and the limit block is fixed, and the stability of the fixing support is enhanced.

【Description of drawings】

FIG. 1 is a schematic diagram of a plane structure provided by an embodiment of the present invention.

FIG. 2 is a front view of a planar structure provided by an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of a rotation limiting structure provided by an embodiment of the present invention.

FIG. 4 is a left side view of a rotation limiting structure provided by an embodiment of the present invention.

FIG. 5 is a schematic diagram of the connection between the connecting rod, the upper rod and the lower rod according to the embodiment of the present invention.

FIG. 6 is a partial cross-sectional view of a limit block provided by an embodiment of the present invention.

FIG. 7 is a front view of an elastic telescopic structure provided by an embodiment of the present invention.

FIG. 8 is a top view of an elastic telescopic structure provided by an embodiment of the present invention.

FIG. 9 is a schematic structural diagram of a fixing belt provided by an embodiment of the present invention.

Among them, 1 is the finger, 2 is the lower fixing belt, 2-1 is the Velcro, 3 is the upper fixing belt, 4 is the upper rod, 5 is the rotating disc, 6 is the elastic thread, 7 is the shell, and 7-1 is the wire hole , 7-2 is the rotating rod, 8 is the lower fixing belt, 9 is the limit block, 9-1 is the first limit layer, 9-2 is the second limit layer, 9-3 is the 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 an insertion bag.

【Detailed ways】

In order to express the present invention more clearly, the present invention will be further described below through specific examples.

Specific embodiment 1, as shown in the figure, is a preferred embodiment of the present invention, a resilient fixation support for flexor tendon injuries, which mainly includes a fixation belt for surrounding and fixing on the finger and two for A rotation limiting structure that limits the rotation angle of the finger joints; 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 They are respectively fixed on both sides of the proximal finger joint. The upper fixing belt 3 and the lower fixing belt 2 are used to fix the rotation limiting mechanism located in the middle. There are two rotation limiting structures and are symmetrical about the fingers. As shown in FIGS. 3 to 6 , the rotation limiting structure mainly includes a limiting block 9 , a connecting rod 12 , an upper rod 4 , a lower rod 8 , and a limiting nut 14 . The shape of the limit block 9 is a cylinder, and the limit block 9 is provided with a cylindrical cavity along the axis direction. The axis of the cavity coincides with the axis of the limit block 9, and the limit block 9 A threaded hole is formed from the end face along the axis direction, and the threaded hole is connected with the cavity. Two through-slots 9-4 are formed on the side surface of the limiting block 9 symmetrically at intervals, and each of the through-slots 9-4 enables the side wall of the limiting block 9 to form a rotary step. The two rotating steps are in the shape of a fan and descend step by step along the annular side wall of the limiting block 9 , and they are the first limiting layer 9-1, the second limiting layer 9-2, and the third limiting layer 9 in sequence. -3. And the upper surface area of each step of the two rotary steps increases step by step from top to bottom, and the shorter sides of the two rotary steps are far away from each other, that is, the third limiting layer 9-3 is far away from each other, The higher 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 through connection with the threaded hole of the limit block 9, and is in the cavity structure. In the cavity structure, one end of the upper rod 4 and one end of the lower rod 8 are respectively passed through the shaft holes, so that the upper rod 4 and the lower rod 8 are connected in rotation in the cavity structure of the limit block 9, through the upper rod 4 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 upper rod 4 The other end is connected with the upper fixing belt 3, the other end of the lower rod 8 is connected with the lower fixing belt 2, and the two rotation limiting structures are respectively connected on the left and right sides of the fixing belt. The rotation drives the fixed belt and the fingers to rotate; between the upper fixed belt 3 and the lower fixed belt 2, there is also an elastic contraction structure to assist the fingers from the straight state to the flexion.

Further, the elastic contraction structure mainly includes a casing 7 , a protective cover 11 , a coil fixing block 10 , and an elastic wire 6 . The casing 7 is fixedly installed in the middle of the lower fixing band 2 and is located on the curved surface of the finger; the casing 7 is a cavity structure with one end open. The protective cover 11 is closed on the open end of the casing 7, a rotating rod 7-2 is provided at the bottom of the cavity structure in the direction perpendicular to the end face of the open end, and the coil fixing block 10 is provided with a through hole in the direction perpendicular to the end face. The rod 7-2 passes through the through hole to fix the coil fixing block 10 in the casing, and the coil fixing block 10 rotates around the rotating rod 7-2; the upper end of the coil fixing block 10 and the position of the vertical side are provided with a convex block 10-1, the open end of the casing 7 is evenly provided with a number of notches, and the coil fixing block 10 is fixed on the casing 7 by the fitting of the convex block 10-1 and the notches, so that the coil fixing block 10 does not rotate . The elastic wire 6 surrounds the side surface of the coil fixing block 10, and the outer casing 7 is provided with a wire hole 7-1. The opening of the hole 7-1 faces the upper fixing belt. The free end of the elastic thread 6 is connected and fixed with the upper fixing band 3 after passing through the thread hole 7-1, and the elastic thread 6 can be wrapped around the upper fixing band 3 by binding. Through the rotation of the coil fixing block 10 , the length of the connection between the elastic thread 6 and the upper fixing belt 3 is adjusted to adjust the elastic force. When the patient's finger is actively stretched, the elastic thread 6 is stretched. When the patient does not stretch the finger, under the action of the elastic thread 6, the finger is subjected to passive flexion training. After moving the coil fixing block 10 away from the housing 7, turn the coil fixing block 10, select the elastic wire 6 with a suitable length, and then put the coil fixing block 10 back into the housing 7, so that the bump 10-1 on the coil fixing block 10 is embedded. It is closed at the notch on the shell 7, so that the length of the elastic line 6 is fixed, and the generated elastic force is also fixed. Finally, cover the protective cover 11 on the opening of the casing 7 so that the coil fixing block 10 will not be detached from the casing 7 . Further preferably, the fixing belt is an inelastic soft material fabric. When the elastic force of the elastic thread 6 is contracted, the fixed belt is deformed to reduce the elastic force, and the training effect of passive flexion of fingers cannot be achieved.

Further preferably, two insertion pockets 15 are respectively provided on the upper fixing belt and the lower fixing belt, the insertion pockets 15 are arranged on the outer side of the fixing belt, and the insertion pockets 15 and the fixing belt form a accommodating cavity, The other ends, namely the free ends, of the upper rod 4 and the lower rod 8 are respectively inserted into the accommodating cavity of the insertion pocket 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 the fan-shaped layer where different stepped layers are selected. different degrees to achieve different degrees of flexion training.

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 coming out, and the other end of the connecting rod 12 located outside the limit block 9 is provided with a rotating connection. Rotating disk 5 of lever 12 . The part of the connecting rod close to the fixing block 13 is a smooth rod, and the other parts are threaded rods. The connecting rod 12 is connected with the fixing nut thread 14, so that the upper rod 4 and the lower rod 8 are connected to the fixing block 13 and the fixing nut 14. The smooth rod part in the middle is connected in rotation. 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 can move up and down in the cavity of the limit block 9. The lower rod 8 is located at the position of the sector-shaped layer cylinders of different layers in the limiting block 9 .

Further preferably, one end of the upper rod 4 and the lower rod 8 that are rotatably connected are fitted with each other, and the axes of the rotation shaft holes of the upper rod 4 and the lower rod 8 are coincident. Therefore, the upper rod 4 and the lower rod 8 are fitted to each other, thereby saving space.

Further preferably, the rotation limiting structure is made of hard material to ensure that the rotation limiting structure can be used normally without deformation during the bending process of the finger.

Further preferably, in order to make the fixing strap suitable for patients with different finger thicknesses, the length of the fixing strap is set to be adjustable. The fixing tape is provided with a Velcro, and the fixing tape is pasted and fixed on the finger 1 through the Velcro. The upper and lower fixing straps are shown in the same structure. One end of the lower fixing band 2 is firstly fixed around the finger and the body of the lower fixing band 2 by the Velcro 2-1, and the other end is wrapped around the finger and then fixed with the body of the lower fixing band 2 by the Velcro 2-1. The strap can be fixed on finger 1 without pinching the finger.

In the specific implementation of the present invention, firstly, the lower fixing belt 2 is fixed on the fingers on both sides of the finger joint of the patient that needs to be trained by Velcro, and the lower rod 8 of the rotation limiting structure is inserted into the insert on the lower fixing belt 2. Then insert the upper rod 4 into the insertion pocket 15 of the upper fixing belt 3 . Adjust the length of the elastic thread 6 according to the degree of rehabilitation training of the patient's finger, so as to adjust the size of the contraction force of the elastic thread 6, so as to adjust the strength of finger flexion. By rotating the rotating disk 5 to connect the connecting rod 12 to the threaded hole of the rotating block 9, the positions of the upper rod 4 and the lower rod 8 connected to the connecting rod 12 are adjusted so that the upper rod 4 and the lower rod 8 are located in different sector layers , so that the rotation angle of the upper rod 4 and the lower rod 8 is limited, so that the degree of flexion of the fingers is limited. To achieve the purpose of different degrees of finger flexion training.

In the second embodiment, the fixing belt is provided with a sun-shaped buckle, and the length of the fixing belt is adjusted through the sun-shaped buckle structure. Similar to the length adjustment structure on the seat belt, the fixing effect is better.

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 modifications completed under the technical spirit suggested by the present invention shall belong to This invention covers the scope of the patent.

Claims (9)

1. a resilient finger flexor tendon injury fixing support, is characterized in that: mainly comprise the fixing band for being fixed on the finger and two rotation limiting structures for limiting the rotation angle of the finger joints; The length of the 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, and the upper fixing belt and the lower fixing belt are respectively fixed. The belt is used to fix the rotation limit mechanism located in the middle. The rotation limit structure mainly includes a limit block, a connecting rod, an upper rod, a lower rod, and a limit nut; the shape of the limit block is a cylinder, and the The limit block is provided with a cylindrical cavity along the axis direction, the axis of the cavity coincides with the axis of the limit block, the limit block is provided with a threaded hole from the end face along the axis direction, and the threaded hole communicates with the cavity , the side of the limit block is symmetrically provided with two through slots, each of the through slots makes the side wall of the limit block form a rotary step, and the two rotary steps are fan-shaped along the limit The annular side wall of the block descends step by step, and the upper surface area of each step of the two rotary steps increases step by step from top to bottom, the shorter side of the two rotary steps is far away from each other, and the higher One side of the upper rod and one end of the lower rod enter into the cavity structure through different through grooves respectively; the connecting rod enters the cavity structure by connecting with the threaded hole of the limit block, and is in the cavity In the structure, the shaft holes opened at one end of the upper rod and one end of the lower rod respectively make the upper rod and the lower rod rotate and connect in the cavity structure of the limit block, and the upper rod and the lower rod are respectively abutted and screwed in the cavity structure. The rotation limit is carried out on different layers of the rotary ladder; 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 upper fixing belt. One end is connected with the lower fixing belt, and the two rotation limiting structures are respectively connected on the left and right sides of the fixing belt, and the rotation of the upper rod and the lower rod drives the rotation of the fixing belt and the fingers; Equipped with elastic contraction structure to assist fingers from extended state to flexion. 2. The resilient finger flexor tendon injury fixing support according to claim 1, characterized in that: the elastic contraction structure mainly comprises a casing, a protective cover, a coil fixing block, and an elastic thread; the casing is fixedly installed on the lower fixing belt The middle part of the casing is located on the curved surface of the finger; the casing is a cavity structure with one end open, the protective cover is closed at the open end of the casing, and a rotating rod is arranged in the vertical direction of the end face in the cavity structure, and the coil fixing block A through hole is opened in the direction of the vertical end face, and the rotating rod passes through the through hole to fix the coil fixing block in the casing, and the coil fixing block rotates around the rotating rod; the upper end of the coil fixing block and the position of the vertical side face are provided with A bump, the open end of the casing is evenly provided with a number of notches, the coil fixing block is fixed on the casing through the fitting of the convex block and the notch, so that the coil fixing block does not rotate, and the elastic wire surrounds the coil On the side of the fixing block, the casing is provided with a wire hole, the wire hole penetrates straight from the inner side of the casing to the outer side of the casing, and the opening of the wire hole faces the upper fixing belt, and the free end of the elastic wire passes through After the wire hole is connected to the upper fixing belt. 3. The resilient flexor digitorum tendon injury fixing support according to claim 1, characterized in that: 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 connecting rod is located at the end of the limit block. The other end of the outer side of the limit block is provided with a rotating disk for rotating the connecting rod; the part of the connecting rod close to the fixing block is a smooth rod, and the other parts are threaded rods. The connecting rod is threadedly connected with the fixing nut, so that the upper The rod and the lower rod are rotatably connected at the position of the smooth rod between the fixing block and the fixing nut. 4 . The resilient fixation brace for flexor tendon injury according to claim 1 , wherein the fixing belt is provided with a Velcro, and the fixing belt is pasted and fixed on the finger through the Velcro. 5 . 5 . The resilient flexor digitorum tendon injury fixing support according to claim 1 , wherein the fixing strap is provided with a sun-shaped buckle, and the length of the fixing strap is adjusted through the sun-shaped buckle structure. 6 . 6 . The resilient fixation brace for flexor digitorum tendon injury according to claim 1 , wherein the fixation belt is made of inelastic soft material. 7 . 7. The resilient flexor digitorum tendon injury fixing support according to claim 1, characterized in that: the upper fixing belt and the lower fixing belt are respectively provided with two insertion pockets, and the insertion pockets are arranged on the fixed On the outside of the belt, the insertion pocket and the fixing belt form a accommodating cavity, and the free ends of the upper rod and the lower rod are inserted into the accommodating cavity of the insertion pocket. 8 . The resilient flexor digitorum tendon injury fixation device according to claim 1 , wherein one end of the upper rod and the lower rod rotatably connected is fitted with each other, and the axes of the shaft holes of the upper rod and the lower rod are coincident with each other. 9 . . 9 . The resilient fixation brace for flexor digitorum tendon injury according to claim 1 , wherein the rotation limiting structure is made of hard material. 10 .

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