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An extramedullary combined bevel gear bone extension device

A technology of combining internal and external, extending the device, applied in medical science, surgery, etc., can solve the problems of inability to control the length of the extension, prolong the patient's treatment time, poor reliability and controllability, etc., to shorten the treatment time, compact structure, suitable for strong effect

Active Publication Date: 2020-12-18
盐城日升月恒智能科技有限公司
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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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  • An extramedullary combined bevel gear bone extension device
  • An extramedullary combined bevel gear bone extension device
  • An extramedullary combined bevel gear bone extension device

Examples

Experimental program
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specific Embodiment approach 1

[0014] Specific implementation mode one: as Figure 1~Figure 5 As shown, the present invention discloses a bevel gear bone extension device for intramedullary and extramedullary integration, which includes a fixed osseointegration part 2, a movable osseointegration part 3, a gear box 4, a lead screw 5, a fixed osseointegration part 2 7, a bevel gear drive Box 8 and two guide rods 1, the two guide rods 1 are fixed side by side between the fixed osseointegration part 1 2 and the gear box 4, and the movable osseointegration part 3 is slidably installed on the two guide rods 1, so The lead screw 5 is arranged between two guide rods 1 along the length direction, the lead screw 5 is screwed with an intramedullary threaded sleeve 5-1, and the connecting end of the lead screw 5 rotates through the intramedullary shaft seat 6 and is fixedly installed with a Moving gear 5-2, the gear box 4 is provided with a lower transmission gear 4-1, the lower transmission gear 4-1 is connected with ...

specific Embodiment approach 2

[0015] Specific implementation mode two: as figure 1 , 5 As shown, this embodiment is a further description of Embodiment 1. The hand-held handle 15 is coaxially fixed with a scale disk 15-1, and the upper end of the shaft cylinder 8-1 is provided with a scale indicating arrow 8. -4.

specific Embodiment approach 3

[0016] Specific implementation mode three: as Figure 5 As shown, this embodiment is a further description of the second specific embodiment. The scale disc 15-1 is made of transparent plastic, and the scale disc 15-1 is uniformly provided with ten radial scale lines at equal angles, and the The above ten radial scale lines are sequentially provided with numbered marks.

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Abstract

The invention provides a novel bone lengthening device adopting intramedullary and extramedullary combination and adopting bevel gears, and relates to a medical apparatus for the orthopedics department. Two guide rods are fixed between a fixed bone connector I and a gear box, a movable bone connector slides on the two guide rods, a lead screw is screwed to an intramedullary thread sleeve, the connecting rod of the lead screw rotatably penetrates through an intramedullary shaft base and is fixedly provided with a driven gear, a lower transmission gear in the gear box is meshed with the driven gear, a bevel gear drive box is fixed on a fixed bone connector II, a transmission shaft is rotatably arranged between the bevel gear drive box and the gear box, an upper transmission gear is fixed atone end, positioned in the gear box, of the transmission shaft and is meshed with the lower transmission gear, a horizontal bevel gear is fixed at one end, positioned in the bevel gear drive box, of the transmission shaft, the horizontal bevel gear is meshed with a vertical bevel gear, a shaft barrel fixedly communicates with the upper end of the bevel gear drive box, a driving shaft is rotatablyarranged in the shaft barrel, the lower end of the driving shaft is fixedly connected with the vertical bevel gear, and a handholding rotating handle is fixed at the upper end of the driving shaft. The traction lengthening for the skeleton can be carried out at any time, and the treatment time is shortened.

Description

technical field [0001] The invention relates to an orthopedic medical device, in particular to a bone extension device combining extramedullary and extramedullary bevel gears. 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 exten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/56
CPCA61B17/56A61B2017/564
Inventor 周日同周求湛刘济源刘学广刘萍萍王俊
Owner 盐城日升月恒智能科技有限公司
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