Fracture traction device

Abstract

The invention discloses a fracture traction device, and relates to the technical field of fracture traction fixation, the fracture traction device comprises a sickbed body, four supporting legs are fixedly arranged at the bottom of the sickbed body, four supporting rods are arranged at the top of the sickbed body, and a shank placing platform is arranged at the tops of the four supporting rods. Through the arrangement of a square frame, a first spring, a protection spring, a protection plate, a sliding rod, a fixing plate, a first gear, a first rack, a fixing column, a rotating shaft, a second gear and a second rack, according to different leg muscle contents of different people, a larger traction force is needed correspondingly when the content of thicker shank muscles is large; the minimum protection threshold value of the traction force is adaptively changed in cooperation with the downward moving length of the two-way rack, manual adjustment is not needed, the labor intensity of workers is greatly reduced, and therefore it is guaranteed that different patients can achieve the optimal traction force effect, and meanwhile the problems of skin tearing, bleeding and the like caused by large traction force are solved.

Description

Technical Field

[0001] The invention relates to the technical field of fracture traction and fixation, in particular to a fracture traction device. Background Art

[0002] Intertrochanteric fractures are common in the elderly. Due to the rich blood supply to the trochanteric region, fractures rarely fail to heal, but hip varus is very likely to occur. Elderly patients who are bedridden for a long time have more complications. Local pain, swelling, tenderness and functional impairment are obvious after trauma. Sometimes subcutaneous ecchymosis can be seen on the outside of the hip. The affected limb is restricted in movement after injury, and cannot stand or walk. The focus of this disease is on the care of the patient, including preoperative and postoperative care, attention to reasonable nutrition, and early functional exercise. Functional exercise is an important part of fracture treatment, which can quickly restore the normal function of the affected limb.

[0003] The invention patent with the patent number CN110262645B discloses an intertrochanteric fracture traction and fixation device, which provides a device that can adapt to different leg shapes of different thicknesses and lengths, provides cushioning protection for the patient's affected limb, and can drive the patient's leg to move, and can massage the patient's legs to activate blood circulation during rest. Technical solution: An intertrochanteric fracture traction and fixation device, including a base, a rotating bracket, a first electric push rod, a bracket connecting shaft, a thigh bracket, a protective gear, a first adjustment block, a first connecting bracket, a second electric push rod, a connecting rotating shaft, etc.; two rotating brackets are symmetrically fixed to the left end of the base. This invention designs an intertrochanteric fracture traction and fixation device, which can control the lifting of the patient's knee by controlling the extension and retraction of the first electric push rod, and lift the patient's calf by extending the second electric push rod.

[0004] The above-mentioned device lifts and lowers the patient's calf by extending and retracting the second electric push rod, thereby driving the patient's leg movement to avoid muscle atrophy. However, according to the different muscle strengths of different patients, the corresponding traction force also needs to be adjusted accordingly. Usually, weights are used to adjust the traction force. However, during the initial debugging of the traction force, it is impossible to accurately control the most appropriate traction force, which can easily lead to excessive traction for the patient, causing skin tearing, bleeding, etc. In addition, people with different leg thicknesses have greatly different leg muscle content, so the appropriate range of the corresponding traction adjustment also varies. Relying on manual judgment is not only time-consuming and labor-intensive, but also prone to errors, causing damage to the patient. Summary of the invention

[0005] The technical solution of the present invention aims at the technical problem that the existing technical solution is too single, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a fracture traction device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a fracture traction device, comprising a hospital bed body, four support legs are fixedly arranged at the bottom of the hospital bed body, four support rods are arranged at the top of the hospital bed body, a calf placement platform is arranged on the top of the four support rods, a clamping mechanism is arranged on the top of the calf placement platform, a protection mechanism is arranged at the bottom of the calf placement platform, a connecting column is arranged at the end of the protection mechanism, a slider is arranged at the end of the connecting column, a traction rope is fixedly arranged on the slider, and a weight is arranged at the other end of the traction rope, two placement rods are arranged at the top of the hospital bed body, a thigh placement platform is rotatably arranged between the two placement rods, an electric push rod is arranged at the top of the hospital bed body, a hinge is rotatably arranged at the end of the output shaft of the electric push rod, the hinge is fixedly connected to the hospital bed body, an elastic strap is arranged on the top of the thigh placement platform, and a limiting mechanism is arranged at the end of the clamping mechanism.

[0007] Preferably, the clamping mechanism includes two clamping gears, a double-sided rack, an arc-shaped pressure plate, two splints, a mounting plate and two L-shaped racks. The double-sided racks are movably inserted on the top of the calf placement platform, the mounting plate is fixedly arranged on the top of the calf placement platform, the two clamping gears are rotatably arranged on the side walls of the mounting plate, the two L-shaped racks are slidably arranged on the top of the calf placement platform, the arc-shaped pressure plate is fixedly arranged on the top of the double-sided rack, and the two splints are respectively fixedly arranged on the ends of the two L-shaped racks.

[0008] Preferably, the double-sided racks are respectively meshed with two clamping gears, and the two clamping gears are respectively meshed with corresponding L-shaped racks.

[0009] Preferably, the protection mechanism includes a square frame, a first spring, a protection spring, a protection plate, a sliding rod, a fixed plate, a first gear, a first rack, a fixed column, a rotating shaft, a second gear and a second rack. The frame is fixedly arranged at the bottom of the calf placement platform, one end of the first spring is fixedly arranged on the inner wall of the square frame, the fixed plate is fixedly arranged on the top of the bed body, the fixed column is fixedly arranged on the side wall of the fixed plate, the other end of the fixed column is fixedly connected to the other end of the first spring, the sliding rod is slidably arranged on the top of the bed body, the second rack is fixedly arranged on the top of the sliding rod, the protection plate is fixedly arranged on the end of the second rack, the protection spring is fixedly arranged on the end of the protection plate, the first rack is fixedly arranged on the bottom of the double-sided rack, the rotating shaft is rotatably arranged on the side wall of the square frame, the second gear is fixedly arranged on the rotating shaft, and the first gear is fixedly arranged on the rotating shaft.

[0010] Preferably, a through slot for the fixing column to pass through is provided on the protection plate, the first gear is meshed with the first rack, and the second gear is meshed with the second rack.

[0011] Preferably, the limiting mechanism includes a plurality of limiting teeth, two annular pull rods, two movable columns, two return springs and two wedge rods. The two movable columns are respectively inserted into the bottom of the inner wall of the corresponding splint, the two annular pull rods are respectively fixed on the top of the corresponding movable columns, the two return springs are respectively fixed on the bottom of the two splints, the two wedge rods are respectively fixed on the bottom of the two movable columns, and the plurality of limiting teeth are fixed on the top of the calf placement platform.

[0012] Preferably, a plurality of the limiting teeth are arranged symmetrically about the center line.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes that according to the different leg muscle contents of different people, the corresponding thicker calf muscles have more content and require greater traction force, so as to adaptively change the minimum protection threshold of the traction force in coordination with the downward movement length of the bidirectional rack, without manual adjustment, greatly reducing the labor intensity of the staff, thereby ensuring that different patients can achieve the best traction effect without suffering from problems such as skin tearing and bleeding caused by large traction force; The present invention realizes adaptive clamping effect for legs of different thicknesses of different people by setting a clamping gear, a double-sided rack, an arc-shaped pressure plate, two clamping plates, a mounting plate and two L-shaped racks, does not require an additional power source, and does not cause the clamping force to be too large or too small due to electric control or other people controlling the clamping force. The operation is simple and worthy of promotion. The present invention realizes automatic clamping of the clamping mechanism through the arrangement of limiting teeth, two annular pull rods, two movable columns, two reset springs and two wedge rods, without manual operation, and when the legs need to be relaxed at a certain time later, the patient can release the lock by himself, and the operation is simple, convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the positional relationship between the protection mechanism and the clamping mechanism of the present invention; Figure 3 It is a schematic diagram of the internal cross-sectional structure of the clamping mechanism of the present invention; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 It is a schematic diagram of the structure of the clamping mechanism of the present invention; Figure 6 for Figure 5Enlarged view of point A in the middle; Figure 7 It is a schematic diagram of the top view of the protection mechanism of the present invention.

[0015] In the figure: 1, bed body; 2, support leg; 3, traction rope; 4, weight; 5, protection mechanism; 51, frame; 52, first spring; 53, protection spring; 54, protection plate; 55, sliding rod; 56, fixing plate; 57, first gear; 58, first rack; 59, fixing column; 510, rotating shaft; 511, second gear; 512, second rack; 6, clamping mechanism; 61, clamping gear; 62, double Surface rack; 63, arc pressure plate; 64, splint; 65, mounting plate; 66, L-shaped rack; 7, limit mechanism; 71, limit tooth; 72, annular pull rod; 73, movable column; 74, return spring; 75, wedge rod; 8, support rod; 9, calf placement platform; 10, thigh placement platform; 11, elastic strap; 12, placement rod; 13, connecting column; 14, electric push rod; 15, hinge; 16, slider. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-7, an embodiment of the present invention: a fracture traction device, comprising a bed body 1, four support legs 2 are fixedly arranged at the bottom of the bed body 1, four support rods 8 are arranged on the top of the bed body 1, a calf placement platform 9 is arranged on the top of the four support rods 8, a clamping mechanism 6 is arranged on the top of the calf placement platform 9, a protection mechanism 5 is arranged at the bottom of the calf placement platform 9, a connecting column 13 is arranged at the end of the protection mechanism 5, a slider 16 is arranged at the end of the connecting column 13, a traction rope 3 is fixedly arranged on the slider 16, and a weight 4 is arranged at the other end of the traction rope 3, two placement rods 12 are arranged on the top of the bed body 1, a thigh placement platform 10 is rotatably arranged between the two placement rods 12, an electric push rod 14 is arranged on the top of the bed body 1, a hinge 15 is rotatably arranged at the end of the output shaft of the electric push rod 14, the hinge 15 is fixedly connected to the bed body 1, an elastic bandage 11 is arranged on the top of the thigh placement platform 10, and a limiting mechanism 7 is arranged at the end of the clamping mechanism 6. First, the patient lies on the bed body 1, and then places the calf and thigh on the corresponding calf placement platform 9 and thigh placement platform 10, and adjusts the thigh angle through the electric push rod 14. After the adjustment, the thigh is tied with the elastic strap 11, and the calf's own weight drives the clamping mechanism 6 to clamp the calf. After clamping, the clamping mechanism 6 is limited by the limiting mechanism 7, and the traction force is changed by adjusting the weight 4. The clamping mechanism 6 drives the corresponding protection mechanism 5 to adjust the minimum protection threshold of the traction force. When relaxation is needed, it is only necessary to manually pull the limiting device to release the limit on the clamping mechanism 6.

[0018] Specifically, the clamping mechanism 6 includes two clamping gears 61, a double-sided rack 62, an arc-shaped pressure plate 63, two splints 64, a mounting plate 65 and two L-shaped racks 66. The double-sided rack 62 is movably plugged into the top of the calf placement platform 9, the mounting plate 65 is fixedly arranged on the top of the calf placement platform 9, the two clamping gears 61 are rotatably arranged on the side wall of the mounting plate 65, the two L-shaped racks 66 are slidably arranged on the top of the calf placement platform 9, the arc-shaped pressure plate 63 is fixedly arranged on the top of the double-sided rack 62, and the two splints 64 are respectively fixedly arranged at the ends of the two L-shaped racks 66. The weight of the calf presses down the arc-shaped pressure plate 63, and the arc-shaped pressure plate 63 moves downward, driving the double-sided rack 62 downward, and the double-sided rack 62 moves downward, driving the two clamping gears 61 to rotate, and the rotation of the two clamping gears 61 drives the corresponding L-shaped racks 66 to move inward toward each other, and the synchronous movement of the L-shaped racks 66 drives the two splints 64 to move synchronously, so that the two splints 64 clamp the calf, thereby achieving a good clamping effect for legs of different thicknesses.

[0019] Specifically, the double-sided rack 62 is meshed with the two clamping gears 61 respectively, and the two clamping gears 61 are meshed with the corresponding L-shaped racks 66 respectively.

[0020] Specifically, the protection mechanism 5 includes a frame 51, a first spring 52, a protection spring 53, a protection plate 54, a sliding rod 55, a fixing plate 56, a first gear 57, a first rack 58, a fixing column 59, a rotating shaft 510, a second gear 511 and a second rack 512. The frame 51 is fixedly arranged at the bottom of the calf placement platform 9, one end of the first spring 52 is fixedly arranged on the inner wall of the frame 51, the fixing plate 56 is fixedly arranged on the top of the bed body 1, the fixing column 59 is fixedly arranged on the side wall of the fixing plate 56, and the fixing column 59 is fixedly arranged on the side wall of the fixing plate 56. One end is fixedly connected to the other end of the first spring 52, the sliding rod 55 is slidably set on the top of the bed body 1, the second rack 512 is fixedly set on the top of the sliding rod 55, the protection plate 54 is fixedly set at the end of the second rack 512, the protection spring 53 is fixedly set at the end of the protection plate 54, the first rack 58 is fixedly set at the bottom of the double-sided rack 62, the rotating shaft 510 is rotatably set on the side wall of the frame 51, the second gear 511 is fixedly set on the rotating shaft 510, and the first gear 57 is fixedly set on the rotating shaft 510. The double-sided rack 62 moves downward to drive the first rack 58 to move downward, and the first rack 58 moves downward to drive the first gear 57 to rotate. The rotation of the first gear 57 drives the rotating shaft 510 and the second gear 511 to rotate. The rotation of the second gear 511 drives the second rack 512 to move toward the first spring 52. The movement of the second rack 512 drives the protective plate 54 to move synchronously. The movement of the protective plate 54 drives the protective spring 53 to move synchronously, so that the traction rope 3, under the action of the weight 4, the traction frame 51 compresses the first spring 52 and the stroke becomes shorter, thereby reducing its minimum traction force protection threshold value; it is realized that due to the different thickness of the calf, the muscle content contained is different, and the corresponding thicker calf muscle content has more and needs greater traction force, so that the minimum protection threshold value of the traction force is adaptively changed in accordance with the downward length of the two-way rack, without manual adjustment, which greatly reduces the labor intensity of the staff, thereby ensuring that different patients can achieve the best traction effect without being affected by problems such as skin tearing and bleeding caused by large traction force.

[0021] Specifically, the protection plate 54 is provided with a through slot for the fixing column 59 to pass through, the first gear 57 and the first rack 58 are meshed with each other, and the second gear 511 and the second rack 512 are meshed with each other.

[0022] Specifically, the limiting mechanism 7 includes a plurality of limiting teeth 71, two annular pull rods 72, two movable columns 73, two return springs 74 and two wedge rods 75. The two movable columns 73 are respectively inserted into the bottom of the inner wall of the corresponding splint 64, the two annular pull rods 72 are respectively fixed on the top of the corresponding movable columns 73, the two return springs 74 are respectively fixed on the bottom of the two splints 64, the two wedge rods 75 are respectively fixed on the bottom of the two movable columns 73, and the plurality of limiting teeth 71 are fixed on the top of the calf placement platform 9. The movement of the splint 64 drives the wedge rod 75 to move, and the wedge rod 75 moves to abut against the limit tooth 71, thereby driving the wedge rod 75 to move upward. The upward movement of the wedge rod 75 compresses the return spring 74. When relaxation is needed, the annular pull rod 72 is pulled up to drive the movable column 73 to move upward. The upward movement of the movable column 73 drives the wedge rod 75 to move upward synchronously, thereby releasing the contact and limit of the wedge rod 75 with the limit tooth 71. Automatic clamping of the clamping mechanism 6 is realized without manual operation, and when the patient needs to relax his legs at a certain time in the future, the patient can release the lock by himself. The operation is simple, convenient and fast.

[0023] Specifically, the plurality of limiting teeth 71 are arranged symmetrically about the center line.

[0024] Working principle: first, the patient lies on the bed body 1, and then the calf and thigh are placed on the corresponding calf placement platform 9 and thigh placement platform 10, and the thigh angle is adjusted by the electric push rod 14. After the adjustment, the thigh is tied up by the elastic strap 11, and the arc pressure plate 63 is pressed down by the weight of the calf. The arc pressure plate 63 moves downward and drives the double-sided rack 62 to move downward. The double-sided rack 62 moves downward and drives the two clamping gears 61 to rotate. The rotation of the two clamping gears 61 drives the corresponding L-shaped racks 66 to move inward toward each other. The synchronous movement of the L-shaped rack 66 drives the two splints 64 to move synchronously, so that the two splints 64 clamp the calf, and the movement of the splint 64 drives the wedge rod 75 to move. The wedge rod 75 moves to resist the limit tooth 71, thereby driving the wedge rod 75 to move upward, and the wedge rod 75 moves upward to compress the reset spring 74. When needed When it is necessary to relax, pull the annular pull rod 72 to drive the movable column 73 to move upward, and the upward movement of the movable column 73 drives the wedge rod 75 to move upward synchronously, so that the wedge rod 75 releases the interference limit with the limit tooth 71, and the traction force is changed by adjusting the weight 4, and the double-sided rack 62 moves downward to drive the first rack 58 to move downward, and the downward movement of the first rack 58 drives the first gear 57 to rotate, and the rotation of the first gear 57 drives the rotating shaft 510 and the second gear 511 to rotate, and the rotation of the second gear 511 drives the second rack 512 to move toward the first spring 52, and the movement of the second rack 512 drives the protective plate 54 to move synchronously, and the movement of the protective plate 54 drives the protective spring 53 to move synchronously, so that the traction rope 3 under the action of the weight 4 traction frame 51 compresses the first spring 52 to become shorter, thereby reducing its minimum traction force protection threshold.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fracture traction device, comprising a bed body (1), wherein the bottom of the bed body (1) is fixedly provided with four support legs (2), and the top of the bed body (1) is provided with four support rods (8), characterized in that: A calf placement platform (9) is arranged at the top of the four support rods (8), a clamping mechanism (6) is arranged at the top of the calf placement platform (9), a protection mechanism (5) is arranged at the bottom of the calf placement platform (9), a connecting column (13) is arranged at the end of the protection mechanism (5), a slider (16) is arranged at the end of the connecting column (13), a traction rope (3) is fixedly arranged on the slider (16), and a weight (4) is arranged at the other end of the traction rope (3), two placement rods (12) are arranged at the top of the bed body (1), a thigh placement platform (10) is rotatably arranged between the two placement rods (12), an electric push rod (14) is arranged at the top of the bed body (1), a hinge (15) is rotatably arranged at the end of the output shaft of the electric push rod (14), and the hinge (15) is fixedly connected to the bed body (1), an elastic bandage (11) is arranged at the top of the thigh placement platform (10), and a limiting mechanism (7) is arranged at the end of the clamping mechanism (6).

2. A fracture traction device according to claim 1, characterized in that: The clamping mechanism (6) comprises two clamping gears (61), a double-sided rack (62), an arc-shaped pressure plate (63), two clamping plates (64), a mounting plate (65) and two L-shaped racks (66); the double-sided rack (62) is movably plugged into the top of the calf placement platform (9); the mounting plate (65) is fixedly mounted on the top of the calf placement platform (9); the two clamping gears (61) are rotatably mounted on the side wall of the mounting plate (65); the two L-shaped racks (66) are slidably mounted on the top of the calf placement platform (9); the arc-shaped pressure plate (63) is fixedly mounted on the top of the double-sided rack (62); and the two clamping plates (64) are respectively fixedly mounted on the ends of the two L-shaped racks (66).

3. A fracture traction device according to claim 2, characterized in that: The double-sided rack (62) is respectively meshed with the two clamping gears (61), and the two clamping gears (61) are respectively meshed with the corresponding L-shaped racks (66).

4. A fracture traction device according to claim 2, characterized in that: The protection mechanism (5) comprises a square frame (51), a first spring (52), a protection spring (53), a protection plate (54), a sliding rod (55), a fixing plate (56), a first gear (57), a first rack (58), a fixing column (59), a rotating shaft (510), a second gear (511) and a second rack (512); the square frame (51) is fixedly arranged at the bottom of the calf placement platform (9); one end of the first spring (52) is fixedly arranged on the inner wall of the square frame (51); the fixing plate (56) is fixedly arranged on the top of the bed body (1); the fixing column (59) is fixedly arranged on the side wall of the fixing plate (56); and the fixing column (510) is fixedly arranged on the side wall of the fixing plate (56). 9) The other end is fixedly connected to the other end of the first spring (52), the sliding rod (55) is slidably set on the top of the bed body (1), the second rack (512) is fixedly set on the top of the sliding rod (55), the protection plate (54) is fixedly set on the end of the second rack (512), the protection spring (53) is fixedly set on the end of the protection plate (54), the first rack (58) is fixedly set on the bottom of the double-sided rack (62), the rotating shaft (510) is rotatably set on the side wall of the frame (51), the second gear (511) is fixedly set on the rotating shaft (510), and the first gear (57) is fixedly set on the rotating shaft (510).

5. A fracture traction device according to claim 4, characterized in that: The protection plate (54) is provided with a through slot for the fixing column (59) to pass through, the first gear (57) and the first rack (58) are meshed with each other, and the second gear (511) and the second rack (512) are meshed with each other.

6. A fracture traction device according to claim 1, characterized in that: The limiting mechanism (7) comprises a plurality of limiting teeth (71), two annular pull rods (72), two movable columns (73), two return springs (74) and two wedge-shaped rods (75); the two movable columns (73) are respectively inserted into the bottom of the inner wall of the corresponding clamping plate (64); the two annular pull rods (72) are respectively fixedly arranged on the top of the corresponding movable columns (73); the two return springs (74) are respectively fixedly arranged on the bottom of the two clamping plates (64); the two wedge-shaped rods (75) are respectively fixedly arranged on the bottom of the two movable columns (73); and the plurality of limiting teeth (71) are respectively fixedly arranged on the top of the calf placement platform (9).

7. A fracture traction device according to claim 6, characterized in that: The plurality of limiting teeth (71) are arranged symmetrically about the center line.

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