External fixator for pelvic fracture
An external fixator, pelvic bone technology, applied in the directions of external fixator, fixator, etc., can solve the problems of low patient adaptability and complicated operation, and achieve the effect of wide range of use, convenient operation and wide application range.
Inactive Publication Date: 2021-03-16
中国人民解放军总医院第七医学中心
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Problems solved by technology
[0004] Since the adjustment rods have the shortest length, the increase in the length of the adjustment rods is not suitable for patients with small differences in conditions; in order to be suitable for different patients, it is necessary to manually increase or decrease the number of adjustment rods. When there are many adjustment rods, When installing this device, it is necessary to adjust the adjustment lever one by one, which is complicated to operate
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[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0036] It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.
[0037] Such as Figure 1-7 As shown, the present invention provides a kind of pelvic fracture external fixator, comprising:
[0038] screw 1;
[0039] Two sleeves 2 are respectively slidably fitted on the screw 1, and both ends of each sleeve 2 are fixed by nuts 3 matched with the screw 1, and the outer wall of each sleeve 2 is fixedly connected with the screw 1. Vertical telescopic rod 4, and the screw rod 1 is coplanar with the two telescopic rods 4, the end of the telescopic rod 4 is connected with a rotating block 5, and the rotating block 5 winds the telescopic rod in the ...
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The invention discloses an external fixation frame for pelvic fractures. The external fixation frame comprises a screw rod, two sleeves and four rectangular rods. The sleeves slidably sleeve the screwrod. Two ends of each sleeve are fastened through nuts matched with the screw rod. A retractable rod perpendicular to the screw rod is fixedly connected to the outer wall of each sleeve. The screw rod is coplanar with the two retractable rods. A rotating block is connected to the tail end of each retractable rod. The rotating blocks are rotated around the normal lines of the tail ends of the retractable rods in a plane, where the screw rod and the two retractable rods are located, and then fastened. The two rectangular rods are slidably and fixedly connected to one side face, away from the corresponding retractable rod, of each rotating block. Through holes are formed in the rectangular rods. A fixing hole is penetratingly formed in an outer side wall of each through hole. Bolts are connected into the fixing holes to allow bone needles to be fastened in bone needle holes. The external fixation frame has the advantages that screwing portions of the nuts do not need to be extended whenthe external fixation frame is applied to different patients, the two bone needles on one side of the pelvis can be fastened at the same time, and fixation supports with the same specification have wide application range and are convenient to operate.
Description
technical field [0001] The invention relates to the technical field of orthopedic medical instruments. More specifically, the present invention relates to an external fixator for pelvic fractures. Background technique [0002] When the pelvis is fractured, for example, when the pelvic fracture gap is too large, manual reduction is difficult and not fine enough, and the pelvic fracture external fixator can be used for fixation. [0003] Existing free-adjustable pelvic external fixation brackets that can be adjusted at multiple angles and are multi-purpose with the same specification include at least three length-adjustable adjustment rods, two lockable universal joints, two lockable universal balls, and two extension rods and two bone needles, wherein each adjusting rod includes a sleeve provided with an internal thread and a threaded rod, and the sleeve is threadedly connected with the threaded rod. The adjustment rod is divided into a length adjustment rod and two side ad...
Claims
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IPC IPC(8): A61B17/66
CPCA61B17/66
Inventor 张建政陈晓斌孙天胜刘智
Owner 中国人民解放军总医院第七医学中心