Distal femur osteotomy positioning and guiding device and positioning method thereof

A positioning-guided, femoral technology, applied in bone drill guidance, medical science, surgery, etc., can solve problems affecting surgical accuracy and achieve the effects of improving surgical efficacy, reducing bleeding, and reducing surgical risks

Pending Publication Date: 2017-08-18
THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason is that the current 3D printing guide plate design and the design of related supporting surgical instruments are relatively closed, and there is a lack

Method used

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  • Distal femur osteotomy positioning and guiding device and positioning method thereof
  • Distal femur osteotomy positioning and guiding device and positioning method thereof
  • Distal femur osteotomy positioning and guiding device and positioning method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Such as Figure 1-7 As shown in the figure, a distal femoral osteotomy positioning and guiding device includes a locator and a measuring device. The positioner includes a first positioning plate 1 , a sieve plate 2 , a femoral incision 3 , a connection block 4 , an osteotomy guide block 5 , a fixing nail 6 and a positioning nail 7 . The measuring device 8 includes a first measuring plate 81 , a second measuring plate 82 and a push nut 83 .

[0048]The first positioning plate 1 is L-shaped as a whole, including a first vertical plate 11 provided with two vertical first nail holes 13 and a first bottom plate 12 perpendicular to the first vertical plate 11 . Described sieve plate 2 comprises second vertical board 21, two screen hole side boards 22, and one end of two screen hole side boards 22 is vertically provided with second vertical board 21, and described second vertical board 21 and first The vertical plates 11 are detachably connected, and the screen hole side pla...

Embodiment 2

[0058] In this embodiment, the distal femoral osteotomy positioning and guiding device includes a locator and a measuring device. The positioner includes a first positioning plate 1 , a sieve plate 2 , a femoral incision 3 , a connection block 4 , an osteotomy guide block 5 , a fixing nail 6 and a positioning nail 7 . The measuring device 8 includes a first measuring plate 81 , a second measuring plate 82 and a push nut 83 .

[0059] The first positioning plate 1 is L-shaped as a whole, including a first vertical plate 11 provided with a first vertical nail hole 13 and a first bottom plate 12 perpendicular to the first vertical plate 11 . Described sieve plate 2 comprises second vertical board 21, two screen hole side boards 22, and one end of two screen hole side boards 22 is vertically provided with second vertical board 21, and described second vertical board 21 and first The vertical plates 11 are detachably connected, and the screen hole side plates 22 are used for inser...

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Abstract

The invention relates to a distal femur osteotomy positioning and guiding device and a positioning method thereof. The distal femur osteotomy positioning and guiding device comprises a positioning device and a measuring device. The positioning device comprises a first positioning plate, a screen plate, a femur cutting groove, a connection block, an osteotomy guide block, a fixing screw and a positioning screw. The measuring device comprises a first measuring plate, a second measuring plate and a pushing nut. The distal femur osteotomy positioning and guiding device has the advantages that osteotomy thickness can be measured accurately, osteotomy direction and thickness can be accurately quantified by inserting the positioning screw into the screen plate, the angle of the osteotomy face on the vertical plane is adjusted through selection of the positioning screw at different angles to meet preoperative design requirements, and finally, personalized accurate TKA (total knee arthroplasty) osteotomy is realized; the extramedullary positioning technology is adopted, so that interference on femur marrow cavities is avoided, intraoperative bleeding is reduced, surgical effect is improved, and surgical risk is lowered.

Description

technical field [0001] The invention relates to the field of surgical instruments, in particular to a positioning guide device for distal femoral osteotomy and a positioning method thereof. Background technique [0002] Artificial knee arthroplasty has strict requirements for restoring the alignment of the lower limbs. Poor alignment of the lower limbs after surgery can cause abnormal stress distribution on the articular surface of the prosthesis, which in turn leads to local prosthesis stress concentration and accelerated wear, increasing the risk of prosthesis loosening. Abnormal rotation and alignment of the prosthesis will lead to abnormal patella tracking, unbalanced flexion-extension gap, increased postoperative joint flexion-extension function, pain and discomfort, and the risk of accelerated prosthesis wear. Accurate positioning of osteotomy and prosthesis installation during the operation are ideal for reconstructing the lower limbs. Key to alignment and restoratio...

Claims

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Application Information

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IPC IPC(8): A61B17/17
CPCA61B17/1732A61B17/175
Inventor 邬培慧廖威明傅明盛璞义
Owner THE FIRST AFFILIATED HOSPITAL OF SUN YAT SEN UNIV
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