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Fracture three-dimensionally-intersecting-connecting-locking internal fixing device

A technology of internal fixator and cross interconnection, which is applied in the field of medical equipment, can solve problems such as broken plates, and achieve the effect of preventing varus displacement

Inactive Publication Date: 2016-06-01
刘明忱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the above-mentioned defects, and aims to provide a three-dimensional cross-interconnection locking humerus, bone fracture, etc. Fracture three-dimensional cross-interconnected locking internal fixator for proximal, distal and diaphyseal fractures of the femur

Method used

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  • Fracture three-dimensionally-intersecting-connecting-locking internal fixing device
  • Fracture three-dimensionally-intersecting-connecting-locking internal fixing device
  • Fracture three-dimensionally-intersecting-connecting-locking internal fixing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] See figure 1 , figure 2 , The three-position cross-interconnected locking internal fixator for distal femoral fractures is composed of: inclined hole plate 1, taper thread locking screw hole Ⅰ 2, countersink hole 3, oblique hole Ⅰ 4, locking screw hole 5, taper thread locking screw Ⅰ 7, The small chute 6, the large chute 11, the locking nail 8, the tapered rod screw 9, and the cortical bone screw 10 are composed of the inclined hole plate 1 as a guide, which provides a guide mold and a multi-nail combined structure for the precise positioning of the guide pin. The inclined orifice plate 1 is provided with locking nail hole Ⅰ2, countersunk hole 3, inclined hole Ⅰ4, locking nail hole 5, small chute 6 and large chute 11 in sequence, and locking nail Ⅰ7 is set in the locking nail hole Ⅰ2. The screw 9 is set in the inclined hole I4 with an inclination angle of 150-160 degrees to form a cross locking nail triangular support with the locking nail I7, the two cortical bone sc...

Embodiment 2

[0032] See image 3 , Figure 4 , the three-position interlocking interlocking internal fixator for proximal humeral fractures consists of: inclined hole plate 1, taper thread locking screw hole I2, oblique hole I4, small chute 6, taper thread locking screw I7, cortical bone screw 10 and It consists of 13 threaded nails. The inclined hole plate 1 is a guide, which provides a guide mold and a multi-nail structure for the precise positioning of the guide needle. On the inclined hole plate 1, there are locking nail holes I2, inclined holes I4, and locking nails I7. Set in the locking nail hole I2, the fully threaded screw 13 is inclined at an angle of 150° in the inclined hole I4 to form a cross-locking nail triangular support with the tapered thread locking screw I7, and the cortical bone screw 10 is set in the chute 6.

[0033] The three-dimensional cross-interconnected locking internal fixator for distal femur and proximal humerus fractures of the present invention has three-...

Embodiment 3

[0035] See Figure 5 , Figure 6, intertrochanteric fracture three-dimensional cross-interconnected locking internal fixator is composed of: inclined hole plate 1, inclined hole Ⅰ 4, locking nail hole 5, small chute 6, locking nail 8, tapered rod screw 9, cortical bone nail 10 , large chute 11, inclined hole II 12 and full threaded nails 13. The inclined hole plate 1 is a guide, which provides a guide mold and a multi-nail fixed structure for the precise positioning of the guide pin. Hole II12, locking nail hole 5, inclined hole I4, small chute 6 and large chute 11; tapered rod screw 9 is set in the inclined hole II12 with an inclination angle of 100-135 degrees, and full thread screw 13 is set in the inclined hole I4 and the cone The rod screw 9 forms a cross locking nail triangular support, two cortical bone screws 10 are set in the small chute 6 and the large chute 11 respectively, and the locking nail 8 is set in the locking nail hole 5 .

[0036] The three-dimensional c...

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Abstract

The invention relates to a fracture three-dimensionally-intersecting-connecting-locking internal fixing device. The fracture three-dimensionally-intersecting-connecting-locking internal fixing device is characterized by including the distal-femur fracture three-dimensionally-intersecting-connecting-locking internal fixing device, the proximal-humeral fracture three-dimensionally-intersecting-connecting-locking internal fixing device, the femoral-intertrochanteric fracture three-dimensionally-intersecting-connecting-locking internal fixing device, the femur-neck and proximal-femoral fracture connecting-locking internal fixing device, the backbone intersecting and locking internal fixing device and the backbone sliding-chute locking internal fixing device in a three-dimensionally intersecting, connecting and locking mode. According to the fracture three-dimensionally-intersecting-connecting-locking internal fixing device, the space structure which has the three-dimensional rotation resisting effect and the introversion resisting effect and is optimal and most stable for distal femur fractures is formed; the internal fixing device is tightly attached to the femur inner-side fracture line through high-strength slant cotter pins, the continuity of cortexes of bone is rebuilt to achieve strong spanning supporting, introversion shifting of fractures is effectively prevented, and static force stabilization in structural mechanics is achieved; as locking pins span the two ends of the fracture line to resist bending stress firstly, part of the stress is borne by screws, and the world problem that due to stress concentration of AO locking plates for backbone fractures, proximal femoral fractures, distal femur fractures and proximal humeral fractures, plate breaking often occurs is solved in structure and biomechanics.

Description

technical field [0001] The invention relates to a medical device, which is an internal fixator and a guide for orthopedic treatment, and relates to a three-dimensional cross-interconnected locking internal fixator for treating fractures of the shaft, proximal femur, distal femur, and proximal humerus, in particular to a fracture Three-dimensional cross-interconnected locking internal fixator. Background technique [0002] At present, there are many methods for the treatment of intertrochanteric fractures at home and abroad. Traditionally, internal fixation methods such as DHS\DCS, PFN\PFN and locking plates are used, but the fixation of unstable fractures is poor, and there are: prone to fracture malunion Inverted. The maximum load resistance of the Richards nail is 280kg, but because of the poor anti-rotation ability of a single nail, the operation is complicated, the operation time is long, the injury and bleeding are more, and there are still more than 10-27% of coxa var...

Claims

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Application Information

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IPC IPC(8): A61B17/68A61B17/86A61B17/80
CPCA61B17/68A61B17/80A61B17/8014A61B17/8057A61B17/8061A61B17/808A61B17/86A61B17/8625A61B2017/564A61B2017/8655
Inventor 刘明忱
Owner 刘明忱
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