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Hollow locking external fixation stent and bone fracture fixing device

An external fixation, hollow technology, applied in the direction of external fixator, fixator, medical science, etc., can solve the problems of non-rigid connection, high economic pressure, slow fracture healing, etc., achieve good guiding and limiting effect, and low economic pressure , to prevent the effect of deflection

Active Publication Date: 2016-03-30
潍坊励精医疗器械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the internal fixation locking plate treatment method is that after the fracture heals, a second operation is required to remove the internal fixation locking plate, causing additional physical injury to the patient and high economic pressure
However, the problem of using the existing external fixation bracket treatment method is: the bone nail passing through the external fixation bracket and the external fixation bracket are not connected by threads, and do not belong to rigid connection, which leads to easy occurrence of rot between the external fixation bracket and the bone screw. Loose and slow fracture healing, which is not conducive to the recovery of patients

Method used

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  • Hollow locking external fixation stent and bone fracture fixing device
  • Hollow locking external fixation stent and bone fracture fixing device
  • Hollow locking external fixation stent and bone fracture fixing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown together, a hollow locking external fixation bracket includes a round tubular bracket body 1, the tube wall of the bracket body 1 is provided with multiple groups of holes along its length direction, and each group of hole groups includes a pair of opposite threads The through holes 1a and a pair of opposite elongated through holes 1b, the threaded through holes 1a and the elongated through holes 1b are alternately arranged at intervals on the pipe wall. A plurality of cylindrical cores 2 are slidingly provided in the inner cavity of the bracket body 1, and each core 2 is provided with an auxiliary threaded through hole 21, and a core 2 is provided between each pair of threaded through holes 1a. The auxiliary threaded through hole 21 corresponds to the position of the threaded through hole 1a, and a core 2 is arranged between each pair of elongated through holes 1b, and the auxiliary threade...

Embodiment 2

[0036] Such as Figure 6 As shown, a fracture fixation device includes the hollow locking external fixation bracket in the first embodiment, the threaded through hole 1a and the elongated through hole 1b are both penetrated with bone nails, and the bone nails are threadedly connected with the auxiliary threaded through hole 21 and passed through A first screw nut device is arranged between the nail caps of the bone screws of the same hole group, wherein the nail cap of the first bone screw 31 is the first nail cap 311, and the nail cap of the second bone nail 32 is the second nail cap 321 , the first screw nut device includes a first screw 4 fixedly connected with the first nut 311, a second screw 5 fixedly connected with the second nut 321, the first screw 4 and the second screw 5 are connected by the first nut 6 In connection, the helical directions of the first screw 4 and the second screw 5 are opposite.

[0037] Such as Figure 6As shown, when using a fracture fixation ...

Embodiment 3

[0040] Such as Figure 7 As shown, the third embodiment is basically the same as the second embodiment, the difference is that the tail ends of the first bone nails 31 all pass through the first section of bone 7, and the tail ends of the second bone nails 32 all pass through the second section of bone 8. The tail end of the first bone screw 31 is threaded with the second nut 9, the tail end of the second bone screw 32 is threaded with the third nut 10, and a second screw rod is arranged between the second nut 9 and the third nut 10 Nut device, the second screw rod nut device comprises the 3rd screw rod 11 that is fixedly connected with the 2nd nut 9, the 4th screw rod 12 that is fixedly connected with the 3rd nut 10, pass the 4th nut between the 3rd screw rod 11 and the 4th screw rod 12 13 are threadedly connected, and the thread direction of the third screw rod 11 and the fourth screw rod 12 are opposite.

[0041] Rotate the fourth nut 13 to drive the fourth screw rod 12 to...

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Abstract

The invention discloses a hollow locking external fixation stent and a bone fracture fixing device. The hollow locking external fixation stent comprises a tubular stent body and multiple cores arranged inside an inner cavity of the stent body in a sliding mode, multiple hole sets are formed in the length direction of the tube wall of the stent body, each hole set comprises a pair of threaded through holes formed oppositely and a pair of oblong through holes formed oppositely, and the threaded through holes and the oblong through holes are alternately arrayed in a spaced mode; an auxiliary threaded through hole is formed in each core and corresponds to one threaded through hole or one oblong through hole in position. The hollow locking external fixation stent is arranged outside the muscles of a human body and connected with a bone suffering bone fracture through bone nails so that the bone can be fixed to the stent, and then the distance between two sections of bones is adjusted through a threaded rod and nut adjusting device so that the bone fracture portions can be tightly attached; after the bone fracture is cured, it is unnecessary to take out the stent through a secondary operation, so that the pain and economic burden of a patient are reduced.

Description

technical field [0001] The invention relates to the technical field of fracture fixation appliances, in particular to a hollow locking external fixation bracket and a fracture fixation device using the hollow locking external fixation bracket. Background technique [0002] Currently, physicians typically treat patients with fractures with external fixation braces or internal fixation locking plates. [0003] The internal fixation locking plate is set inside the human muscle and fits on the bone. The two sections of bone are fixed on the internal fixation locking plate through the bone nail, and the two sections of bone are positioned. The bone nail and the internal fixation locking plate are screwed together, which is a rigid connection. , It is not easy to loosen between the internal fixation locking plate and the bone nail. The problem with the internal fixation locking plate treatment method is that after the fracture has healed, a second operation is required to remove ...

Claims

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Application Information

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IPC IPC(8): A61B17/66
CPCA61B17/6425A61B17/6458A61B17/6491A61B17/66A61B2017/564
Inventor 胡明军
Owner 潍坊励精医疗器械股份有限公司
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