CN111513683A - Ankle joint looseness measuring instrument - Google Patents

Abstract

The invention discloses an ankle joint relaxation measuring instrument, comprising a casing (1), a calf fixing mechanism (2) is arranged on the top of the casing (1), and a top plate of the casing (1) is formed with a calf fixing mechanism (2). An escape port (3), two sides of the escape port (3) are respectively provided with a linear track (4), a foot fixing mechanism (5) is slidably installed on the linear track (4), and the shell The body (1) is provided with an electric sliding rail mechanism, the electric sliding rail mechanism is provided with a push-pull plate (7), and the push-pull plate (7) extends out of the casing (1) through the escape opening (3). ), the push-pull plate (7) is connected with the foot fixing mechanism (5) through a force sensor (8). The invention can automatically generate a uniform drawer force on a patient's foot, and measure its relative displacement at the same time, thereby improving the safety of inspection and obtaining more accurate results.

Description

Ankle laxity meter

technical field

The invention relates to a detection device, in particular to an ankle joint relaxation measuring instrument, which belongs to the field of medical detection equipment.

Background technique

Ankle sprains are the most common sports injury, occurring in up to 1 in 10,000 people per day. After the injury, the ankle joint is swollen and the movement is limited.

Because there are abundant ligaments around the ankle joint, which are used to limit the movement of the ankle joint, when the ankle joint is sprained, it is often accompanied by rupture of the lateral collateral ligament of the ankle joint. Joint instability, joint relaxation, pain, accelerated ankle degeneration.

The clinical diagnosis of the degree of ligament injury mainly relies on imaging examinations, but the degree of partial tear can only be determined by the doctor's physical examination-anterior ankle drawer test. The physical examination is highly subjective and is greatly influenced by the clinical experience of the doctor and the degree of cooperation of the patient. At present, there is no relevant inspection equipment. With the development of precision in the diagnosis and treatment of ankle lateral collateral ligament injuries, it is urgent to develop equipment that can automatically detect ankle laxity.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an ankle joint laxity measuring instrument to solve the deficiencies in the prior art, which can automatically generate a uniform drawer force on the patient's foot, measure its relative displacement at the same time, and improve the safety of inspection, Get more accurate results.

The invention provides an ankle joint laxity measuring instrument, comprising a casing, a calf fixing mechanism is arranged on the top of the casing, an escape port is formed on the top plate of the casing, and two sides of the escape port are respectively provided with There is a linear track, a foot fixing mechanism is slidably installed on the linear track, an electric sliding rail mechanism is arranged in the housing, and a push-pull plate is arranged on the electric sliding rail mechanism, and the push-pull plate passes through the The escape port extends out of the casing, and the push-pull plate is connected with the foot fixing mechanism through a force sensor.

In the aforementioned ankle joint laxity measuring instrument, preferably, the calf fixing mechanism includes a side plate, a connecting plate and a first strapping strap, the number of the side plates is two, and the two are symmetrically arranged on the side of the escape opening. On both sides, the connecting plate is arranged above the casing, the two ends of the connecting plate are respectively fixedly connected to the upper parts of the two side plates, and the bottoms of the two side plates are connected to the bottom of the casing. The top surface is fixedly connected, and the first strapping band is arranged on the connecting plate.

In the aforementioned ankle joint laxity measuring instrument, preferably, the connecting plate is a flat plate or an arc-shaped plate.

In the aforementioned ankle joint laxity measuring instrument, preferably, the foot fixing mechanism includes a support plate, a second strapping strap and a vertical plate, the vertical plate is fixedly arranged at one end of the support plate, and the two are perpendicular to each other, A first sliding block is fixedly installed on the bottom of the supporting plate, the first sliding block is slidably connected with the linear track, the second strapping band is arranged on the supporting plate, and the top surface of the vertical plate reaches to the top of the vertical plate. The distance from the top surface of the casing is smaller than the distance from the bottom surface of the connecting plate to the top surface of the casing; one end of the force sensor is fixedly connected to the vertical plate.

In the aforementioned ankle joint laxity measuring instrument, preferably, the vertical plate is a flat plate or an arc-shaped plate.

In the aforementioned ankle joint laxity measuring instrument, preferably, the electric sliding rail mechanism includes a stepper motor, a lead screw, a second slider and a slider rail, and the stepper motor is fixedly arranged on the slider rail. At one end, the slider track is fixed on the top of the bottom plate in the housing, the lead screw is fixedly connected to the power output end of the stepper motor, the second slider is threadedly connected to the lead screw, and the lead screw is threadedly connected to the lead screw. The second slider is slidably connected with the slider track.

In the aforementioned ankle joint laxity measuring instrument, preferably, the push-pull plate includes a first installation plate and a second installation plate, the first installation plate and the second installation plate are perpendicular to each other, and the two form an L-shaped structure. , the first mounting plate is fixed on the top surface of the second sliding block, and one end of the force sensor is fixedly connected with the second mounting plate.

Preferably, the aforementioned ankle joint laxity measuring instrument further includes a PLC programmable controller and an intelligent terminal, and the PLC programmable controller is electrically connected to the force sensor, the stepping motor and the intelligent terminal.

Compared with the prior art, the present invention has a calf fixing mechanism, a foot fixing mechanism, an electric sliding rail mechanism and a force sensor, and the foot fixing mechanism is driven by the electric sliding rail mechanism to generate displacement, so as to provide a pulling force and a pushing force to the patient's foot. , when the force sensor reaches the preset tensile force value and thrust force value, the patient's ankle joint laxity information can be obtained through the displacement information obtained by the electric slide rail mechanism. The invention completely replaces the manual operation, does not need the access of a doctor in the whole process, realizes automatic measurement, and ensures the accuracy of the measurement value.

Description of drawings

Fig. 1 is the axonometric view of the overall structure of the present invention;

Fig. 2 is the axonometric view of the lower leg fixing mechanism;

Figure 3 is an axonometric view of the foot fixation mechanism;

Figure 4 is an axonometric view of the electric slide rail mechanism and the push-pull plate.

Description of reference numerals: 1-shell, 2-calf fixing mechanism, 3-avoidance opening, 4-straight track, 5-foot fixing mechanism, 7-push-pull plate, 8-force sensor, 9-side plate, 10- connecting plate, 11-first strapping belt, 12-supporting plate, 13-second strapping strap, 14-vertical plate, 15-first sliding block, 16 stepping motor, 17-lead screw, 18-second sliding block , 19-slider track, 20-first mounting plate, 21-second mounting plate.

Detailed ways

The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but not to be construed as a limitation of the present invention.

Embodiments of the present invention: As shown in Figures 1-4, an ankle joint laxity measuring instrument includes a casing 1, the casing 1 preferably adopts a cuboid structure, and a calf fixing mechanism 2 is provided on the top of the casing 1. An escape opening 3 is formed along the length direction on the top plate, and the shape of the escape opening 3 is also a rectangle. A linear track 4 is respectively provided on both sides of the escape opening 3, the linear tracks 4 on both sides are arranged in parallel, and the linear track 4 is slidable A foot fixing mechanism 5 is installed, an electric sliding rail mechanism is arranged in the casing 1, and a push-pull plate 7 is arranged on the electric sliding rail mechanism. Connected to the foot fixing mechanism 5 .

It also includes a PLC programmable controller and an intelligent terminal, and the PLC programmable controller is electrically connected with the force sensor, the stepping motor and the intelligent terminal. Smart terminals can use tablet computers, notebook computers, mobile phones, iPads or desktop computers, etc.

The lower leg fixing mechanism 2 is used to fix the patient's calf, the foot fixing mechanism 5 is used to fix the patient's foot, the electric sliding rail mechanism is used to provide power and record displacement data, and the electric sliding rail mechanism moves forward and backward with the push-pull plate 7, thereby Push force and pull force are applied to the foot fixation mechanism 5 , and the magnitude of the push force and pull force applied is measured by the force sensor 8 . By setting the electric slide rail mechanism and the force sensor 8, a stable pushing force and pulling force can be applied to the patient's foot, so that the judgment of the doctor is not required, and the measurement result is more accurate and stable. The specific usage method will be further introduced below.

In a specific embodiment, the calf fixing mechanism 2 includes a side plate 9, a connecting plate 10 and a first strapping band 11. The number of the side plates 9 is two, and the two are symmetrically arranged on both sides of the escape opening 3 and are connected to each other. The plate 10 is arranged above the casing 1, and the connecting plate 10 is arranged in the vertical direction, and its two ends are respectively fixedly connected with the upper parts of the two side plates 9. The connecting plate 10 and the two side plates 9 are integrally formed. The bottom of the side plate 9 is provided with a flange, and the flange is provided with mounting holes, which can be fixed on the top surface of the housing 1 by bolts.

The distance between the two side plates 9 should be greater than the diameter of the adult calf, and the factor of obese patients should be considered, so the distance between the two side plates 9 is not easy to be too small, the connecting plate 10 can be designed as a flat plate structure, or can be designed as Curved plate structure, designed to improve comfort when fixing the calf.

Further, the foot fixing mechanism 5 includes a supporting plate 12, a second strapping belt 13 and a vertical plate 14. The vertical plate 14 is fixedly arranged at one end of the supporting plate 12, and the two are perpendicular to each other. The bottom of the supporting plate 12 is fixedly installed with a first sliding plate. Block 15, the first sliding block 15 is slidably connected with the linear track 4, the second strapping belt 13 is arranged on the supporting plate 12, and the distance from the top surface of the vertical plate 14 to the top surface of the housing 1 is smaller than that from the bottom surface of the connecting plate 10 to the housing 1. The distance from the top surface, that is to say, the vertical plate 14 can smoothly pass under the connecting plate 10 when moving in the horizontal direction; one end of the force sensor 8 is fixedly connected to the vertical plate 14.

Similarly, the upright plate 14 can also be designed as a flat plate or an arc-shaped plate, and the arc-shaped plate design can improve the comfort of the patient's foot during fixation, because the arc-shaped plate has a larger contact area with the back of the foot. It should be noted that, before the test, the upright plate 14 should be located directly below the connecting plate 10 , that is, the back of the patient's foot should be closely attached to the upright plate 14 before the test.

Further, the electric sliding rail mechanism includes a stepping motor 16, a lead screw 17, a second sliding block 18 and a sliding block rail 19. The stepping motor 16 is fixedly arranged at one end of the sliding block rail 19, and the sliding block rail 19 is fixed on the casing. 1, the lead screw 17 is fixedly connected with the power output end of the stepping motor 16, the second slider 18 is screwed with the lead screw 17, and the second slider 18 is slidably connected with the slider track 19.

The push-pull plate 7 includes a first mounting plate 20 and a second mounting plate 21 . The first mounting plate 20 and the second mounting plate 21 are perpendicular to each other and form an L-shaped structure. The first mounting plate 20 is fixed on the second sliding block 18 . On the top surface, one end of the force sensor 8 is fixedly connected with the second mounting plate 21 .

The use method of this case is described in detail in conjunction with the above-mentioned specific embodiments:

The patient places the foot on the support plate 12, the heel is closely attached to the vertical plate 14, and then the second strap 13 is used to fix the foot on the support plate 12, the calf is tightly attached to the connecting plate 10, and the first strap 11 is used After fixing, use the intelligent terminal to send instructions, the PLC programmable controller controls the rotation of the stepper motor 16, and the stepper motor 16 rotates while driving the second slider 18 to move. Since the pitch of the lead screw 17 is fixed, Therefore, the displacement information of the second slider 18 can be obtained through the number of revolutions of the stepping motor 16. The second slider 18 first moves with the push-pull plate 7 toward the toes, that is to say, the push-pull plate 7 is facing the foot at this time. The fixed mechanism 5 applies thrust, and when the thrust value measured by the force sensor 8 reaches the preset value, an instruction is sent to the PLC programmable controller, and the PLC programmable controller sends the displacement data at this time to the intelligent terminal, and controls the stepper motor 16 Reverse rotation makes the push-pull plate 7 move away from the toes. At this time, the push-pull plate 7 exerts a pulling force on the force sensor 8. When the pulling force value reaches the preset value, it sends an instruction to the PLC programmable controller, and the PLC programmable controller will The displacement data at this time is sent to the intelligent terminal, and the PLC programmable controller controls the stepper motor 16 to rotate in the reverse direction, and restores the second slider 18 to the initial position. The smart terminal can draw a graph with the abscissa as the compression/tension force and the ordinate as the displacement through the acquired displacement information. The doctor can obtain the patient's ankle laxity according to the graph.

The structure, features and effects of the present invention have been described in detail above according to the embodiments shown in the drawings. The above are only the preferred embodiments of the present invention, but the scope of the present invention is not limited by the drawings. Changes made to the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, shall fall within the protection scope of the present invention as long as they do not exceed the spirit covered by the description and drawings.

Claims (8)

1. An ankle joint looseness measuring apparatu which characterized in that: the novel electric foot stool is characterized by comprising a shell (1), wherein a shank fixing mechanism (2) is arranged at the top of the shell (1), an avoiding opening (3) is formed in a top plate of the shell (1), two sides of the avoiding opening (3) are respectively provided with a linear track (4), a foot fixing mechanism (5) is installed on the linear track (4) in a sliding mode, an electric sliding rail mechanism is arranged in the shell (1), a push-pull plate (7) is arranged on the electric sliding rail mechanism, the push-pull plate (7) extends out of the avoiding opening (3) to the shell (1), and the push-pull plate (7) is connected with the foot fixing mechanism (5) through a force sensor (8).

2. The ankle joint laxity measuring instrument according to claim 1, wherein: shank fixed establishment (2) include curb plate (9), connecting plate (10) and first bundling belt (11), the quantity of curb plate (9) is two, and the two symmetry sets up avoid the both sides of mouth (3), connecting plate (10) are located the top of casing (1), the both ends of connecting plate (10) respectively with two the upper portion fixed connection of curb plate (9), two the bottom of curb plate (9) with the top surface fixed connection of casing (1), first bundling belt (11) set up on connecting plate (10).

3. The ankle joint laxity measuring instrument according to claim 2, wherein: the connecting plate (10) is a flat plate or an arc-shaped plate.

4. The ankle joint laxity measuring instrument according to claim 2, wherein: the foot fixing mechanism (5) comprises a supporting flat plate (12), a second strapping tape (13) and a vertical plate (14), the vertical plate (14) is fixedly arranged at one end of the supporting flat plate (12) and is perpendicular to the supporting flat plate, a first sliding block (15) is fixedly arranged at the bottom of the supporting flat plate (12), the first sliding block (15) is in sliding connection with the linear track (4), the second strapping tape (13) is arranged on the supporting flat plate (12), and the distance from the top surface of the vertical plate (14) to the top surface of the shell (1) is smaller than the distance from the bottom surface of the connecting plate (10) to the top surface of the shell (1); one end of the force sensor (8) is fixedly connected with the vertical plate (14).

5. The ankle joint laxity measuring instrument according to claim 4, wherein: the vertical plate (14) is a flat plate or an arc-shaped plate.

6. The ankle joint laxity measuring instrument according to claim 1, wherein: electric slide rail mechanism includes step motor (16), lead screw (17), second slider (18) and slider track (19), step motor (16) is fixed to be set up the one end of slider track (19), slider track (19) are fixed bottom plate top in casing (1), lead screw (17) with the power take off end fixed connection of step motor (16), second slider (18) with lead screw (17) threaded connection, second slider (18) with slider track (19) sliding connection.

7. The ankle joint laxity measuring instrument according to claim 6, wherein: the push-pull plate (7) comprises a first mounting plate (20) and a second mounting plate (21), the first mounting plate (20) and the second mounting plate (21) are perpendicular to each other and form an L-shaped structure, the first mounting plate (20) is fixed on the top surface of the second sliding block (18), and one end of the force sensor (8) is fixedly connected with the second mounting plate (21).

8. The ankle joint laxity measuring instrument according to claim 6, wherein: the force sensor is characterized by further comprising a PLC (programmable logic controller) and an intelligent terminal, wherein the PLC is electrically connected with the force sensor (8), the stepping motor (16) and the intelligent terminal.

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