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A Needle Threading Fixture for External Fixator that Can Be Adjusted in Multiple Directions and Multiple Angles

An external fixator and multi-angle technology, applied in the field of medical devices, can solve problems such as difficult surgery and unfavorable installation of external fixation devices, and achieve the effects of improving accuracy and safety, reducing surgical intensity, and improving success rate

Active Publication Date: 2017-01-18
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using Kirschner wires to fix the external fixation device on the bone, due to the different surgical skills of doctors, the fixation pins fixed on the same side of the bone are not completely parallel, which is not conducive to the installation of the external fixation device and brings difficulties to the operation.

Method used

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  • A Needle Threading Fixture for External Fixator that Can Be Adjusted in Multiple Directions and Multiple Angles
  • A Needle Threading Fixture for External Fixator that Can Be Adjusted in Multiple Directions and Multiple Angles
  • A Needle Threading Fixture for External Fixator that Can Be Adjusted in Multiple Directions and Multiple Angles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Such as figure 1 As shown, a needle threading jig for an external fixator that can be adjusted in multiple directions and angles includes an upper and lower sliding bar 6, an upper and lower sliding block 7, a left and right sliding bar 8 and a Kirschner wire clamping device, and the upper and lower sliding bar 6 is a horizontal A rectangular parallelepiped slide bar with a square cross-section, the upper and lower slide bar 6 is provided with threaded holes perpendicular to the cross-sectional direction and penetrating the upper and lower slide bar 6, and the bottom of the up and down slide bar 6 is fixed on the outside by the upper and lower slide bar adjustment locking bolts 11 On the fixed frame, the upper and lower sliding rods 6 can adjust the angle of the upper and lower sliding rods 6 relative to the outer fixing frame by adjusting the locking bolts 11; the upper and lower sliding sliders 7 are set on the upper and lower sliding rods And can slide up and down al...

Embodiment 2

[0019] Such as figure 2 As described above, a needle threading jig for an external fixator that can be adjusted in multiple directions and angles includes an up and down slide bar 6, an up and down slide bar 7, a left and right slide bar 8 and a Kirschner wire clamping device, and the up and down slide bar 6 is a horizontal A rectangular parallelepiped slide bar with a square cross-section, the upper and lower slide bar 6 is provided with a threaded hole perpendicular to the cross-sectional direction and passing through the upper and lower slide bar 6, and the bottom of the upper and lower slide bar 6 is fixed on the outside by the upper and lower slide bar adjustment locking bolts 11 On the fixed frame, the upper and lower sliding rods 6 can adjust the angle of the upper and lower sliding rods 6 relative to the outer fixing frame by adjusting the locking bolts 11; the upper and lower sliding sliders 7 are set on the upper and lower sliding rods And can slide up and down alon...

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Abstract

The invention discloses an external fixation device needle threading fixture capable of being adjusted in multiple directions and at multiple angles. The external fixation device needle threading fixture comprises an up-down slide rod, an up-down slide block, a left-right slide rod and a kirschner wire clamping device. The up-down slide rod is a cuboid slide rod with the square cross section. A through threaded hole is formed in the up-down slide rod and is fixed to an external fixation frame through an adjusting and locking bolt. The up-down slide rod is sleeved with the up-down slide block. Two through holes which are orthorhombic in the horizontal air direction are formed in the up-down slide block. The left-right slide rod penetrates through one through hole. A left-right slide rod adjusting and fixing bolt and an up-down slide block adjusting and locking bolt are arranged at the two ends of the other through hole respectively. Adjustment of a stepless position and any angle is achieved, fine adjustment can be conducted, hole site blind areas which are vertically immobilized in the external fixation frame are successfully eliminated, the subsequent problem that a kirschner wire is not parallel to an up-down fixed ring is solved, and the four-freedom-degree adjustment and fixation of the kirschner wire can be achieved.

Description

technical field [0001] The invention relates to the field of medical instruments, and more specifically relates to a multi-directional and multi-angle adjustable needle-piercing jig for external fixation frame used for orthopedic surgery correction and fracture reduction. Background technique [0002] When treating fractures in clinical surgery, the use of fixation devices is essential. External fixation is mainly to fix broken bones outside the human body through mechanical devices, which can be used for minimally invasive treatment. The commonly used external fixation devices are mainly Ilizarov external fixators. The Ilizarov technique uses multiplanar thin Kirschner wires to penetrate the limb and bone tissue and connect to a ring fixator. Dr. Taylor improved the Ilizarov external fixation system by connecting six telescopic extension rods obliquely to the proximal and distal rings, and they can rotate freely at the connection point. As long as the length of one of the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/62
CPCA61B17/62
Inventor 杨庆华韩洪志荀一
Owner ZHEJIANG UNIV OF TECH
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