Calcaneal fracture three-dimensional traction reduction device

Abstract

The invention discloses a calcaneal fracture three-dimensional traction reduction device, and relates to the technical field of medical instruments, the calcaneal fracture three-dimensional traction reduction device comprises a base, a supporting pad is fixedly arranged at the top of the base, a side plate is fixedly arranged on the side wall of the supporting pad, and a horizontal plane moving mechanism is rotatably arranged at the top in the base. Through the arrangement of an arc plate, an arc block, a rotating seat and an arc limiting groove, a connecting rod and a rotating ring are driven to drive a calcaneal fracture part of a patient to rotate synchronously aiming at the rotation of the calf of the patient, so that the traction direction of the patient is always kept consistent, and the whole body is driven to move through the rotation of the calf during movement; the fracture traction part of a patient is prevented from being pulled and painful, small-range movement of the patient can be guaranteed, the comfort of the patient is improved, the traction puncture part of the patient can be prevented from being painful, synchronous adjustment of the traction force direction along with movement is guaranteed, and joint stiffness and movement disorder caused by long-time fixation of the joint are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a three-dimensional traction reduction device for calcaneal fracture. BACKGROUND

[0002] Calcaneal fracture is the most common fracture in the tarsal bones of the foot, and improper treatment can cause serious dysfunction of the affected limb. In the prior art, if a patient with calcaneal fracture needs to be reduced, surgery is generally required. Specifically, traction pins need to be inserted at the tibiofibular bone, calcaneus and phalangeal bone, and then a traction bow is used to pull the traction pins to restore the length, height, and internal and external rotation angle of the calcaneus.

[0003] Patent No. CN112022313B discloses a three-dimensional traction reduction device for calcaneal fracture, which comprises a reduction double ring, a traction bow and a pulling rod. The reduction double ring comprises two ring structures arranged in opposite intervals and connected by a plurality of supporting rods. A fixing member is arranged on the reduction double ring to fix the two ends of the tibiofibular traction pin. The traction bow comprises a traction pin fixing end and a pulling end. The pulling rod is arranged on the reduction double ring, the first end of the pulling rod extends into the two double ring structures, and the first end of the pulling rod is detachably connected with the pulling end. The connection position of the pulling rod on the reduction double ring and the length of the pulling rod extending into the two ring structures are both adjustable. The three-dimensional traction reduction device for calcaneal fracture in the present application can perform three-dimensional traction reduction on calcaneal fracture, and the traction angle and force can be accurately controlled by adjusting the pulling rod, thereby reducing the operation difficulty and saving manpower.

[0004] The above device can accurately control the traction angle and force by adjusting the pulling rod, but during the traction of calcaneal fracture, the patient needs to maintain the same posture for a long time, which cannot be moved, causing discomfort to the patient, and the unconscious movement of the patient during sleep can change the traction direction or traction force, causing the healing of the fractured bone to be misaligned, affecting the recovery effect. SUMMARY

[0005] The present application provides a significantly different solution from the prior art to solve the technical problem that the prior art solution is too single. Specifically, the purpose of the present application is to provide a three-dimensional traction reduction device for calcaneal fracture to solve the problems raised in the background art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: a calcaneal fracture three-dimensional traction reduction device, comprising a base, a support pad is fixedly arranged on the top of the base, a side plate is fixedly arranged on the side wall of the support pad, a horizontal plane movement mechanism is rotatably arranged on the inner top of the base, a vertical plane movement mechanism is fixedly arranged on the bottom of the side plate, two side rods are fixedly arranged on the side wall of the base, arc-shaped limiting plates are fixedly arranged on the side wall of the two side rods, connecting rods are fixedly arranged on the two side walls of the vertical plane movement mechanism, rotating rings are fixedly arranged on the ends of the two connecting rods, limiting rings are limitingly and rotatably arranged on the outer wall of the rotating rings, compensation mechanisms are rotatably arranged in the rotating rings, and traction mechanisms are limitingly and slidably arranged on the side wall of the compensation mechanisms.

[0007] Preferably, the vertical plane movement mechanism comprises an arc plate, an arc-shaped block, a rotating seat and an arc-shaped limiting groove, the rotating seat is rotatably arranged on the top of the side plate, the arc-shaped limiting groove is arranged on the top of the rotating seat, the arc-shaped block is limitingly and slidably arranged in the arc-shaped limiting groove, and the arc plate is fixedly arranged on the arc-shaped block.

[0008] Preferably, the rotating ring is limitingly and rotatably arranged between the two arc-shaped limiting plates.

[0009] Preferably, two fixing bands are arranged on the top of the rotating seat, and buckles are fixedly arranged on the side wall of the rotating seat.

[0010] Preferably, the horizontal plane movement mechanism comprises a rotating column, two inclined rods, an arc-shaped sliding plate, a plurality of first teeth, an arc-shaped accommodating groove, a plurality of second teeth, a plurality of third teeth and a linkage assembly, the rotating column is fixedly arranged on the bottom of the rotating seat, one end of each of the two inclined rods is fixedly arranged on the side wall of the rotating column, the arc-shaped sliding plate is fixedly arranged on the other end of each of the two inclined rods, the arc-shaped accommodating groove is arranged on the arc-shaped sliding plate, the plurality of first teeth are fixedly arranged in a circular array on the inner wall of the arc-shaped accommodating groove, the two side walls of the limiting ring are both arranged as conical surfaces, the plurality of second teeth and the plurality of third teeth are respectively fixedly arranged in equidistant circular arrays on the two conical surfaces, and the linkage assembly is arranged on the inner wall of the rotating ring.

[0011] Preferably, the linkage assembly comprises a bevel gear, a rotating shaft, a screw rod and a sleeve, the screw rod is rotatably arranged in the rotating ring, the rotating shaft is fixedly arranged on the end of the screw rod, the bevel gear is fixedly arranged on the rotating shaft, the sleeve is threadedly matched on the screw rod, and the bevel gear is meshed with the plurality of third teeth.

[0012] Preferably, the traction mechanism comprises a U-shaped plate, a connecting shaft, a connecting column, a threaded rod, a traction frame, a Kirschner wire and a plug-in rod, the plug-in rod is arranged in the sleeve side wall, the U-shaped plate is fixedly arranged at the end of the plug-in rod, the connecting shaft is fixedly arranged on the U-shaped plate, the connecting column is rotatably arranged on the connecting shaft, the threaded rod is threadedly arranged in the connecting column, the traction frame is rotatably arranged at the end of the threaded rod, and the Kirschner wire is arranged in the traction frame.

[0013] Preferably, the compensation mechanism comprises two tapered cylinders, two inclined grooves and a limiting block, the two tapered cylinders are rotatably sleeved on the outer wall of the sleeve, the limiting block is fixedly arranged on the plug-in rod, the side walls of the two tapered cylinders are provided with through grooves, the two inclined grooves are arranged on the two through grooves, and the limiting block is limited to slide in the inclined groove.

[0014] Compared with the prior art, the beneficial effects of the present application are: Through the arrangement of the arc plate, the arc block, the rotating seat and the arc limiting groove, the patient's calf is rotated to drive the connecting rod and the rotating ring to rotate synchronously, the traction direction of the patient is kept consistent, and when the patient is active, the whole is driven by the calf rotation, so that the patient's fracture traction part is not pulled and painful, the patient's small range of activity is ensured, the patient's comfort is improved, the patient's puncture part is not pulled and painful, and the traction force direction is adjusted synchronously with the activity. Through the arrangement of the rotating column, the two inclined rods, the arc-shaped sliding plate, the plurality of first teeth, the arc-shaped accommodating groove, the plurality of second teeth, the plurality of third teeth, the bevel gear, the rotating shaft, the screw rod and the sleeve, the patient's body activity drives the patient's calf activity, the calf activity drives the patient's traction part to move, the patient's traction direction is always kept perpendicular to the fracture section, the traction direction is kept consistent, the patient's unconscious activity during sleep does not affect the traction force direction, the traction force direction is changed by the calf, the puncture fixed position is not pulled and painful during the patient's sleep, the patient's sleep effect is improved, and the patient's comfort is greatly improved. Through the arrangement of the tapered cylinder, the two inclined grooves and the limiting block, the self-adaptive adjustment of the traction distance is realized according to the traction angle, so that the same traction force can be ensured under most traction angles, and the traction effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application. Figure 2 It is a schematic diagram of the position relationship structure of the horizontal plane activity mechanism and the vertical plane activity mechanism of the present application. Figure 3This is a schematic diagram showing the positional relationship between the horizontal moving mechanism and the traction mechanism of the present invention; Figure 4 This is a schematic diagram of the linkage component and traction mechanism of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the compensation mechanism structure of the present invention.

[0016] In the diagram: 1. Base; 3. Vertical moving mechanism; 31. Arc plate; 32. Arc block; 33. Rotating seat; 34. Arc-shaped limiting groove; 4. Horizontal moving mechanism; 41. Rotating column; 42. Diagonal rod; 43. Arc-shaped sliding plate; 44. First tooth; 45. Arc-shaped receiving groove; 46. Second tooth; 47. Third tooth; 48. Bevel gear; 49. Rotating shaft; 410. Screw; 411. Sleeve; 5. Traction mechanism; 51. U-shaped plate; 52. Connecting shaft; 53. Connecting column; 54. Threaded rod; 55. Traction frame; 56. Kirschner wire; 57. Insertion rod; 6. Compensation mechanism; 61. Conical cylinder; 62. Diagonal groove; 63. Limiting block; 7. Rotating ring; 8. Side plate; 9. Connecting rod; 10. Side rod; 11. Arc-shaped limiting plate; 12. Support pad; 13. Fixing strap; 14. Buckle. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-6An embodiment of the present invention provides a three-dimensional traction reduction device for calcaneal fractures, comprising a base 1, a support pad 12 fixedly disposed on the top of the base 1, a side plate 8 fixedly disposed on the side wall of the support pad 12, a horizontal movable mechanism 4 rotatably disposed on the top of the base 1, a vertical movable mechanism 3 fixedly disposed on the bottom of the side plate 8, two side rods 10 fixedly disposed on the side wall of the base 1, an arc-shaped limiting plate 11 fixedly disposed on the side wall of each of the two side rods 10, connecting rods 9 fixedly disposed on the two side walls of the vertical movable mechanism 3, rotating rings 7 fixedly disposed at the ends of the two connecting rods 9, a limiting ring rotatably disposed on the outer wall of the rotating ring 7, a compensation mechanism 6 rotatably disposed inside the rotating ring 7, and a traction mechanism 5 slidably disposed on the side wall of the compensation mechanism 6. First, adjust the traction mechanism 5 to a suitable length to match the traction force required by the patient. Then, place the patient's lower leg on the vertical plane movable mechanism 3 and ensure it is fixed and installed. When the patient makes unconscious leg movements, due to discomfort or unconscious movement, the patient's lower leg makes a small-amplitude rotation on the vertical plane movable mechanism 3, causing the vertical plane movable mechanism 3 to rotate synchronously. The vertical plane movable mechanism 3 drives the connecting rod 9 and the rotating ring 7 to rotate synchronously. The rotation of the rotating ring 7 drives the traction mechanism 5 to rotate synchronously, thus ensuring that the patient's traction angle is always consistent with the traction direction. When the patient moves unconsciously, the vertical plane movable mechanism 3 rotates on the horizontal plane with the horizontal plane as the center. The synchronous vertical plane movable mechanism 3 drives the horizontal plane movable mechanism 4 to rotate synchronously. The synchronous horizontal plane movable mechanism 4 drives the compensation mechanism 6 to adaptively adjust the length of the traction mechanism 5 to ensure that the traction angle is adaptively adjusted during horizontal movement. Furthermore, the traction force is adaptively matched according to the change of the traction angle to ensure that the traction force remains consistent at any angle.

[0019] Specifically, the vertical plane movement mechanism 3 includes an arc plate 31, an arc block 32, a rotating seat 33, and an arc-shaped limiting groove 34. The rotating seat 33 is rotatably mounted on the top of the side plate 8, the arc-shaped limiting groove 34 is mounted on the top of the rotating seat 33, the arc block 32 is located inside the arc-shaped limiting groove 34 for limiting and sliding, and the arc plate 31 is fixedly mounted on the arc block 32. The movement of the lower leg causes the arc plate 31 and the arc block 32 to slide within the arc-shaped limiting groove 34. The sliding of the arc plate 31 causes the connecting rod 9 to rotate synchronously, achieving the vertical plane movement effect. This achieves synchronous rotation of the connecting rod 9 and the rotating ring 7, which in turn drives the patient's calcaneal fracture site, ensuring that the traction direction remains consistent. Furthermore, because the movement is driven by the rotation of the lower leg, it avoids traction pain at the fracture site. This ensures both increased patient comfort with small-range movements and avoids pain from traction on the puncture site. It also ensures that the traction force direction adjusts synchronously with the movement, preventing joint stiffness and movement limitations caused by prolonged joint fixation.

[0020] Specifically, the rotating ring 7 is positioned between two arc-shaped limiting plates 11 to limit its rotation.

[0021] Specifically, the top of the rotating seat 33 is provided with two fixing straps 13, and the side wall of the rotating seat 33 is fixedly provided with buckles 14. The lower leg is fixed by passing the fixing straps 13 through the buckles 14.

[0022] Specifically, the horizontal moving mechanism 4 includes a rotating column 41, two inclined rods 42, an arc-shaped sliding plate 43, several first teeth 44, an arc-shaped receiving groove 45, several second teeth 46, several third teeth 47, and a linkage assembly. The rotating column 41 is fixedly installed at the bottom of the rotating seat 33. One end of the two inclined rods 42 is fixedly installed on the side wall of the rotating column 41. The arc-shaped sliding plate 43 is fixedly installed at the other end of the two inclined rods 42. The arc-shaped receiving groove 45 is installed on the arc-shaped sliding plate 43. Several first teeth 44 are arranged in a circular array and fixedly installed on the inner wall of the arc-shaped receiving groove 45. Both side walls of the limiting ring are set as conical surfaces. Several second teeth 46 and third teeth 47 are respectively arranged in an equidistant circular array and fixedly installed on the two conical surfaces. The linkage assembly is installed on the inner wall of the rotating ring 7. The patient's body movement causes the patient's lower leg to rotate, which in turn causes the arc plate 31, the arc-shaped limiting block 63, and the rotating seat 33 to rotate. The rotating seat 33 causes the rotating column 41 to rotate synchronously. The rotating column 41 causes the inclined rod 42 and the arc-shaped sliding plate 43 to rotate around the rotating column 41. The rotation of the arc-shaped sliding plate 43 causes the first tooth 44 to move synchronously. Through the engagement of the first tooth 44 and the second tooth 46, the limiting ring is driven to rotate. It is worth noting that the arc-shaped sliding plate 43 has a smooth section in the middle. When the two connecting rods 9 are horizontal, the first tooth 44 and the second tooth 46 do not contact each other. At this time, when the patient performs vertical movements, the arc-shaped sliding plate 43 cannot be driven to rotate.

[0023] Specifically, the linkage assembly includes a bevel gear 48, a rotating shaft 49, a screw 410, and a sleeve 411. The screw 410 is rotatably disposed in the middle of the rotating ring 7. The rotating shaft 49 is fixedly disposed at the end of the screw 410. The bevel gear 48 is fixedly disposed on the rotating shaft 49. The sleeve 411 is threadedly disposed on the screw 410. The bevel gear 48 meshes with several third teeth 47. The limiting ring drives the third tooth 47 to rotate synchronously. The third tooth 47 meshes with the bevel gear 48, thereby driving the bevel gear 48 to rotate. The rotation of the bevel gear 48 drives the rod shaft 49 and the screw 410 to rotate. The rotation of the screw 410 drives the sleeve 411 to move. The movement of the sleeve 411 drives the traction mechanism 5 to move, thus allowing the direction of the traction force for the patient to be adaptively adjusted according to the angle of the patient's movement. This achieves the effect of the patient's body movement driving the movement of the patient's lower leg, and the movement of the lower leg driving the movement of the traction part of the patient, so that the patient's traction direction always remains perpendicular to the fracture surface, ensuring that the traction direction is always consistent. This avoids the patient's unconscious movement during sleep affecting the direction of the traction force. Furthermore, by driving the lower leg to change the direction of the traction force, it avoids the puncture fixation site being pulled and painful due to the patient's movement during sleep, thereby indirectly ensuring the patient's sleep effect and greatly improving the patient's comfort.

[0024] Specifically, the traction mechanism 5 includes a U-shaped plate 51, a connecting shaft 52, a connecting column 53, a threaded rod 54, a traction frame 55, a Kirschner wire 56, and a connecting rod 57. The connecting rod 57 is inserted into the side wall of the sleeve 411. The U-shaped plate 51 is fixedly mounted at the end of the connecting rod 57. The connecting shaft 52 is fixedly mounted on the U-shaped plate 51. The connecting column 53 is rotatably mounted on the connecting shaft 52. The threaded rod 54 is threaded inside the connecting column 53. The traction frame 55 is rotatably mounted at the end of the threaded rod 54. The Kirschner wire 56 is inserted into the traction frame 55. The depth of the threaded rod 54 inserted into the connecting rod 9 is adjusted by rotating the screw 410. After adjustment, the patient places their foot in the middle of the traction frame 55. Then, the Kirschner wire 56 is pierced through the traction frame 55 and the patient's fracture site to achieve the traction effect. The traction force is then finely adjusted again by rotating the threaded rod 54 to ensure the most suitable traction force.

[0025] Specifically, the compensation mechanism 6 includes two conical cylinders 61, two inclined grooves 62, and a limiting block 63. The two conical cylinders 61 are rotatably sleeved on the outer wall of the sleeve 411, and the limiting block 63 is fixedly mounted on the insertion rod 57. The side walls of the two conical cylinders 61 are provided with through grooves, and the two inclined grooves 62 are provided on the two through grooves. The limiting block 63 is located within the inclined groove 62 and slides within it. The movement of the sleeve 411 drives the insertion rod 57 to move, and the movement of the insertion rod 57 drives the limiting block 63 to slide within the inclined groove 62. This causes the traction distance to increase as the angle increases, resulting in an increase in traction force. The traction distance is adaptively compensated according to the increase in traction distance. This achieves adaptive adjustment of the traction distance according to the increase in traction angle, ensuring the same traction force at most traction angles and guaranteeing the traction effect.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A three-dimensional traction reduction device for calcaneal fractures, comprising a base, characterized in that: A support pad is fixedly installed on the top of the base, and a side plate is fixedly installed on the side wall of the support pad. A horizontal movable mechanism is rotatably installed on the top of the base, and a vertical movable mechanism is fixedly installed on the bottom of the side plate. Two side rods are fixedly installed on the side wall of the base, and an arc-shaped limiting plate is fixedly installed on the side wall of each of the two side rods. Connecting rods are fixedly installed on the two side walls of the vertical movable mechanism, and rotating rings are fixedly installed at the ends of the two connecting rods. A limiting ring is installed on the outer wall of the rotating ring to limit its rotation. A compensation mechanism is rotatably installed inside the rotating ring, and a traction mechanism is slidably installed on the side wall of the compensation mechanism to limit its movement.

2. The three-dimensional traction reduction device for calcaneal fractures according to claim 1, characterized in that: The vertical movable mechanism includes an arc plate, an arc block, a rotating seat, and an arc-shaped limiting groove. The rotating seat is rotatably mounted on the top of the side plate, the arc-shaped limiting groove is mounted on the top of the rotating seat, the arc block is located inside the arc-shaped limiting groove for limiting sliding, and the arc plate is fixedly mounted on the arc block.

3. The three-dimensional traction reduction device for calcaneal fracture according to claim 1, characterized in that: The rotating ring is positioned between two arc-shaped limiting plates to restrict its rotation.

4. The three-dimensional traction reduction device for calcaneal fracture according to claim 2, characterized in that: The top of the rotating seat is provided with two fixing straps, and the side wall of the rotating seat is fixedly provided with buckles.

5. A three-dimensional traction reduction device for calcaneal fractures according to claim 4, characterized in that: The horizontal moving mechanism includes a rotating column, two inclined rods, an arc-shaped sliding plate, several first teeth, an arc-shaped receiving groove, several second teeth, several third teeth, and a linkage component. The rotating column is fixedly installed at the bottom of the rotating seat. One end of each of the two inclined rods is fixedly installed on the side wall of the rotating column. The arc-shaped sliding plate is fixedly installed at the other end of the two inclined rods. The arc-shaped receiving groove is installed on the arc-shaped sliding plate. Several first teeth are arranged in a circular array and fixedly installed on the inner wall of the arc-shaped receiving groove. Both side walls of the limiting ring are set as conical surfaces. Several second and third teeth are respectively arranged in an equidistant circular array and fixedly installed on the two conical surfaces. The linkage component is installed on the inner wall of the rotating ring.

6. A three-dimensional traction reduction device for calcaneal fractures according to claim 5, characterized in that: The linkage assembly includes a bevel gear, a rotating shaft, a screw, and a sleeve. The screw is rotatably disposed in the middle of the rotating ring, the rotating shaft is fixedly disposed at the end of the screw, the bevel gear is fixedly disposed on the rotating shaft, and the sleeve is threadedly disposed on the screw. The bevel gear meshes with several third teeth.

7. A three-dimensional traction reduction device for calcaneal fractures according to claim 6, characterized in that: The traction mechanism includes a U-shaped plate, a connecting shaft, a connecting column, a threaded rod, a traction frame, Kirschner wires, and a plug rod. The plug rod is inserted into the side wall of the sleeve, the U-shaped plate is fixedly mounted at the end of the plug rod, the connecting shaft is fixedly mounted on the U-shaped plate, the connecting column is rotatably mounted on the connecting shaft, the threaded rod is threaded inside the connecting column, the traction frame is rotatably mounted at the end of the threaded rod, and the Kirschner wires are inserted into the traction frame.

8. A three-dimensional traction reduction device for calcaneal fractures according to claim 7, characterized in that: The compensation mechanism includes two conical cylinders, two inclined grooves, and a limiting block. The two conical cylinders are rotatably sleeved on the outer wall of the sleeve, and the limiting block is fixedly mounted on the plug rod. The side walls of the two conical cylinders are provided with through grooves, and the two inclined grooves are provided on the two through grooves. The limiting block is located in the inclined groove and is limited to slide within the inclined groove.

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