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Novel rope pulley bone lengthening device

A technology of bone extension and sheave, which is applied in the field of new sheave bone extension device, can solve the problems of inability to control the length of extension, poor reliability and controllability, and increase of callus formation time, etc. The effect of strong sex and shortening the treatment time

Active Publication Date: 2019-01-25
盐城市湛安智感科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the device is adjusted, the extension length cannot be constantly controlled, and the extension length has great randomness. Once the extension length is too long or too short, it will increase the callus formation time, thereby prolonging the patient's treatment time. The efficiency is low and reliable. less controllable

Method used

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  • Novel rope pulley bone lengthening device
  • Novel rope pulley bone lengthening device
  • Novel rope pulley bone lengthening device

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Experimental program
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specific Embodiment approach 1

[0015] Specific implementation mode one: as Figure 1~Figure 6 As shown, the present invention discloses a novel sheave bone extension device, which includes a fixed osseointegration part 1, a movable osseointegrated part 3, a fixed osseointegrated part 24, a lead screw 5, a cover plate bushing 6, a sheave transmission Frame and two guide rods 1, the two guide rods 1 are arranged side by side and fixedly installed between the fixed osseointegration part 1 2 and the fixed osseointegration part 2 4, the movable osseointegration part 3 is slidably installed on the two guide rods On the rod 1, the lead screw 5 is arranged axially between the two guide rods 1, and one end of the lead screw 5 is inserted into the preset shaft hole at the corresponding position of the fixed osseointegration part 1 through a thrust ball bearing 5-1 Inside, the movable osseointegration part 3 is provided with a screw hole matched with the lead screw 5 and threadedly connected with the lead screw 5, and...

specific Embodiment approach 2

[0016] Specific implementation mode two: as figure 2 , 3 As shown, this embodiment is a further description of Embodiment 1. The sheave drive frame includes a rope drum 7, a hand-rotated rope rod 8 and two steel wire ropes 9. The bottom end of the rope drum 7 and the cover plate portion 6-1 is fixedly connected, and the top of the rope drum 7 is fixedly installed with a rope rod shaft seat 7-1, and the middle position of the hand-rotated rope rod 8 is rotationally connected with the rope rod shaft seat 7-1, and the two steel wire ropes 9 One end is respectively fixed and tightly wound on both sides of the hand-rotating rope rod 8, and the other ends of the two steel wire ropes 9 are penetrated into the cover plate part 6-1 through the rope drum 7, and are respectively fixed and tightly wound on the other end of the lead screw 5. Corresponding position.

specific Embodiment approach 3

[0017] Specific implementation mode three: as Figure 5 As shown, this embodiment is a further description of the second specific embodiment. The two steel wire ropes 9 are respectively wound in spring-like directions on both sides. The winding direction is the same.

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Abstract

The utility model relates to a novel rope pulley bone lengthening device, which relates to an orthopaedic medical device. The two guide rods are fixedly arranged between the fixing bone joint part 1 and the fixing bone joint part 2, a movable bone joint is slidably mounted on the two guide rods, one end of the screw is inserted into a preset shaft hole at a corresponding position of the fixing bone joint 1 through a thrust ball bearing, the movable bone joint is provided with a screw hole matched with the lead screw and is threadably connected with the lead screw, an arch-shaped shaft groove is concave on that out surface of the fixing bone joint 2 along the axial direction of the lead screw, the cover plate shaft sleeve comprises a cover plate part and a shaft sleeve part, wherein the cover plate part is fixed on the two outer surfaces of the fixing bone joint 2 by screws, the shaft sleeve part is inserted into the arc-shaped shaft groove correspondingly, the other end of the screw isrotatably arranged in the shaft sleeve part, and the rope pulley transmission frame is fixed on the cover plate part and can drive the other end of the screw to rotate in both positive and negative directions. Can always carry on the skeletal stretch elongation, shortens the treatment time, alleviates the patient's pain.

Description

technical field [0001] The invention relates to an orthopedic medical device, in particular to a novel sheave bone extension device. Background technique [0002] Bone lengthening is currently an effective method to treat limb shortening deformity and restore or improve limb function. Among them, callus extension of metaphysis of long tubular bone is a common osteotomy extension method with large extension length, fast bone healing, less injury, relatively few complications, and simple operation. It means that the periosteum is reserved behind the metaphyseal bone, and the mesenchymal cells in the periosteum with strong osteogenic ability will heal the bone through the formation of callus. At this time, a slow and continuous traction force is applied through the bone extension device, which can make the The callus formed at the osteotomy is slowly extended to achieve the purpose of bone lengthening. [0003] The current bone extension devices generally use external fixatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/66
CPCA61B17/66
Inventor 刘济源刘学广周日同周求湛刘萍萍王俊
Owner 盐城市湛安智感科技有限公司
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