Multi-azimuth reduction external fixator for bone fracture
An external fixator, multi-directional technology, applied in the direction of fixator, medical science, surgery, etc., can solve the problems of large blood supply damage at the fracture end, large periosteal peeling damage, and difficulty in maintenance, so as to facilitate fracture healing and meet fracture reduction. And the effect of fixing and improving the reset accuracy
Pending Publication Date: 2017-05-24
周海东 +1
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On the other hand, it is difficult to maintain after reduction, and it is necessary to achieve temporary fixation by means of reduction forceps, Kirschner wires or screws. Due to the large trauma to the blood supply of the fracture
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[0027] See figure 1 , 2 , 3, 4, 5, 6, 7, 8, 9 are preferred embodiments of the present invention.
[0028] Multi-directional reduction external fixator for fractures, including a mandrel 3, a sleeve 4 sleeved on the mandrel 3, a spicule first mounting part 1 and a bone spicule second mounting part 2, and a bone pin first mounting part A first universal device 5 is arranged between 1 and the mandrel 3, and a second universal device 6 is arranged between the second mounting part 2 of the bone needle and the sleeve 4.
[0029] The sleeve 4 is provided with a screw hole 40. After the set screw S0 is screwed in, the head end of the set screw S0 will die on the bottom of the adjusting slot 30 opened by the mandrel 3, completing the connection between the sleeve 4 and the mandrel 3. Adjustable and fixed.
[0030] The first mounting part 1 of the bone needle is composed of a mounting seat 11, a needle clamping plate 12 and a hexagon socket bolt S. After the needle clamp plate 12 is mounted...
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The invention discloses a multi-azimuth reduction external fixator for bone fracture. The multi-azimuth reduction external fixator for bone fracture comprises a mandrel, a sleeve, a slide rail mechanism, two angular fine-tuning mechanisms vertical to each other, a first bone needle mounting part and a second bone needle mounting part, wherein a first universal device is arranged between the first bone needle mounting part and the mandrel, a second universal device is arranged between the second bone needle mounting part and the sleeve, the slide rail mechanism comprises a crisscross dovetail guide rail, a first dovetail groove block fixed on a first connector sleeve, a second dovetail groove block fixed on the mandrel, a first adjusting bolt and a second adjusting bolt, the two dovetail groove blocks are slidably arranged on the dovetail guide rail, the first adjusting bolt and the second adjusting bolt are respectively connected with the dovetail guide rail in a screwed manner, each angular fine-tuning mechanism comprises an adjusting threaded sleeve, a pair of rod-end joint bearings and two connecting rods, the rod-end joint bearings are respectively connected to two ends of the adjusting threaded sleeve in a screwed manner, the connecting rods are respectively fixed onto the sleeve and the second bone needle mounting part, and each rod-end joint bearing is pivoted to the corresponding connecting rod. By the arrangement, the multi-azimuth reduction external fixator has the advantages that lateral and angular displacement of a bone fracture end can be corrected, and the reduction external fixator is labor-saving in operation and capable of lowering fracture reduction difficulty.
Description
[0001] 【Technical Field】 [0002] The invention relates to a fracture multi-directional reduction external fixator, which is used for multi-directional reduction of misplaced fracture ends in orthopedic minimally invasive surgery, and belongs to the technical field of orthopedic medical appliances. [0003] 【Background technique】 [0004] At present, the reduction of fractures in the operation is basically performed by the orthopedic surgeon. The fracture end is held with the help of tools such as bone clamps, and the assistant assists in traction and corrects the displacement of the fracture, which requires a lot of manpower. On the other hand, it is difficult to maintain after reduction. Temporary fixation needs to be achieved by means of reduction forceps, Kirschner wires or screws. Due to the large trauma, the blood supply of the fracture end is damaged, the periosteum is peeled off and the damage is large, which easily leads to delayed healing or even bone failure. In view of th...
Claims
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Login to view more IPC IPC(8): A61B17/60A61B17/88
CPCA61B17/60A61B17/8866
Inventor 周海东童晶潘科良徐宏宇宋南炎裘立华王刚祥
Owner 周海东
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