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Traction-compression bidirectional device for promoting tibia fracture postoperative healing

A tibial and stretching technology, applied in the field of stretching-compression bidirectional devices, can solve problems such as difficult bone healing, difficult coagulation of blood coagulation factors, and slow blood flow, so as to reduce internal and external adhesions of joints, promote the growth of callus, The effect of promoting the formation of new bone

Inactive Publication Date: 2022-05-13
THE THIRD HOSPITAL OF HEBEI MEDICAL UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For patients with long bone fractures, inappropriate exercise will make the bones difficult to heal, but if they do not exercise, it is easy to cause deep vein thrombosis, especially for patients with lower limb fractures, the time spent in bed after the fracture is relatively long, and the blood flow is slow during bed rest , and it is easy to cause blood coagulation factors to not easily coagulate on the blood vessel wall, thus forming thrombosis of lower extremity veins

Method used

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  • Traction-compression bidirectional device for promoting tibia fracture postoperative healing
  • Traction-compression bidirectional device for promoting tibia fracture postoperative healing
  • Traction-compression bidirectional device for promoting tibia fracture postoperative healing

Examples

Experimental program
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Effect test

Embodiment 1

[0065] Such as figure 2 As shown, in this embodiment, the driving mechanism includes a pulling box 301 , a hammer body 302 and a driving part. The pulling box 301 is fixed on the middle part of the second arm, and the inside of the pulling box 301 has a slideway arranged along the length direction of the tibia, and the two ends of the slideway are closed. The hammer body 302 is slidably arranged in the slideway of the pulling box 301 , and the driving part is used to drive the two ends of the hammer body 302 opposite to the hammering slideway. The hammer body 302 hammers the two ends of the slideway respectively, and exerts hammering force toward the distal end and the proximal end on the U-shaped frame 20 , so as to apply compressive force or pulling force to the tibia.

[0066] Specifically, the driving part can be realized by using electromagnetism, including a first electromagnet 311 and two first permanent magnets 312 . The first electromagnet 311 is fixed on the hamme...

Embodiment 2

[0068] Such as image 3 As shown, in this embodiment, the driving mechanism includes a pulling box 301 , a hammer body 302 and a driving part. The pulling box 301 is fixed on the middle part of the second arm, and the inside of the pulling box 301 has a slideway arranged along the length direction of the tibia, and the two ends of the slideway are closed. The hammer body 302 is slidably arranged in the slideway of the pulling box 301 , and the driving part is used to drive the two ends of the hammer body 302 opposite to the hammering slideway. The hammer body 302 hammers the two ends of the slideway respectively, and exerts hammering force toward the distal end and the proximal end on the U-shaped frame 20 , so as to apply compressive force or pulling force to the tibia.

[0069] Specifically, the driving part can be realized by mechanical driving, which includes a first fixing box 321 , a first screw rod 322 and two rods.

[0070] The first fixed box 321 provides a fixed re...

Embodiment 3

[0072] Such as Figure 4 As shown, in this embodiment, the driving mechanism includes a second fixed box 331, a second electromagnet 332 and a second permanent magnet 333, and the second fixed box 331 is also arranged around the second arm of the U-shaped frame 20, and the second fixed box The box 331 has a hole for the first arm to slide out, so that the U-shaped frame 20 can slide into or out of the second fixed box 331, in order to keep the stability of the second fixed box 331 and ensure its position when driving. No movement occurs, and a suction cup is provided at the part where the second fixed box 331 is in contact with the bottom surface or the bed surface, so as to increase the stability of the second fixed box 331 . The second electromagnet 332 and the second permanent magnet 333 are oppositely arranged and fixed to the second arm and the second fixing box 331 respectively, and the second electromagnet 332 is connected to a circuit capable of switching positive and ...

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Abstract

The invention discloses a traction-compression two-way device for promoting tibia fracture postoperative healing. The traction-compression two-way device comprises a fixing boot, a U-shaped frame and a driving mechanism. The fixing boot is worn on the foot of a patient, and an air bag layer capable of being inflated and expanded is arranged in the fixing boot. The U-shaped frame comprises two first arms and a second arm connecting the two first arms, the free ends of the two first arms are fixed to the fixing boot, and the second arm is located at the far end of the fixing boot. And the driving mechanism acts on the second arm of the U-shaped frame and is used for driving the second arm to compress the fixing boot towards the near end or pull the fixing boot towards the far end. The device applies compression or traction to the far end of the tibia of a patient, bidirectional stress stimulation is achieved, inching between fractures is induced, and the fracture healing speed and quality are improved.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to a traction-compression bidirectional device for promoting postoperative healing of tibial fractures. Background technique [0002] Long bone fracture is a common orthopedic trauma disease, and the two important links in its treatment are traction reduction and fixation. Among them, nonunion is defined as nonunion if the fracture fails to heal after treatment and the healing process terminates. X-ray films often show that the fracture line persists, the stump is hardened, and the callus is atrophied or absent. Except for a small number of hypertrophic nonunions of long bones that are completely caused by stress instability and only need to be stabilized, almost all nonunions of long bones require bone grafting. [0003] There are two types of factors that cause nonunion: systemic and local. In comparison, the local factors are the main reason for nonunion of lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61H1/00A61H1/02A61H9/00A61H23/02A61N2/00A61F5/042
CPCA61H1/006A61H1/0222A61H1/0218A61H9/0078A61H23/02A61H23/006A61N2/002A61F5/042A61H2201/10A61H2201/1207A61H2201/1638A61H2201/1642A61H2205/06A61H2205/10
Inventor 陈伟张奇吕红芝孔德志李泳龙赵阔张英泽
Owner THE THIRD HOSPITAL OF HEBEI MEDICAL UNIV
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