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Intramedullary nail distal end aiming multidimensional adjusting apparatus

A technology of multi-dimensional adjustment and intramedullary nailing, which is applied in the fields of internal fixator, internal bone synthesis, medical science, etc., can solve the problems of component fit gap error, cumbersome adjustment, and long adjustment time, so as to save precious time, reduce impact, The effect of reducing complications

Pending Publication Date: 2020-10-13
陈聚伍 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the disadvantages of the existing intramedullary nail collimator that there are many adjustment nodes and various structural parts in the adjustment process, which easily lead to large errors in the matching gap of each part and cumbersome adjustment, which leads to long adjustment time in the X-ray environment, and provides A multi-dimensional adjustment device with high integration, compact structure, high degree of precision fit, small error, and easy adjustment, which is used to improve adjustment efficiency and accuracy

Method used

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  • Intramedullary nail distal end aiming multidimensional adjusting apparatus
  • Intramedullary nail distal end aiming multidimensional adjusting apparatus
  • Intramedullary nail distal end aiming multidimensional adjusting apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: adopt a kind of as figure 1 As shown in the multi-dimensional adjustment device, the device can install an aiming mechanism at the end of the threaded cross bar 313 and make it located under the C-arm to ensure that X-rays can be viewed vertically (vertically) and from the side. Under the condition of vertical perspective, the translation angle can be determined by referring to the projection of the needle in the distal hole of the intramedullary nail. No matter whether the projection position is accurate or not, the translation angle can be adjusted by adjusting the three-dimensional adjustment device to make the translation angle refer to the horizontal movement and horizontal angle rotation of the needle. . Operate the C-arm to make the X-ray see through from the side, no matter whether the projection height of the translation angle reference needle is appropriate or not, it can be adjusted to the projection position of the optimal height by adjusting t...

Embodiment 2

[0044] Embodiment 2: On the basis of Embodiment 1, at the same time, vertical rod adjustment nuts 316 and vertical rod locking nuts 318 are respectively installed on the vertical adjustment rods 312 at both ends of the square box to adjust the height and lock of the square box. On the threaded cross bar 313 at two ends of the square box, a cross bar adjusting nut 317 and a cross bar locking nut 319 are respectively installed to adjust the lateral movement and locking of the threaded cross bar 313 .

Embodiment 3

[0045] Embodiment 3: On the basis of Embodiment 1, in the three-dimensional adjustment device 3, the vertical angle adjustment mechanism involved can also be provided with a horizontal lumen in the square box and is equipped with an inner stud 327, and one end of the inner stud 327 is drawn out Outside the square box, there is an adjustment nut 328 threadedly connected. The inner end of the adjustment nut 328 includes a neck and an inner block respectively. At the same time, a limit groove is set at a corresponding position on the square box, and the inner block is matched with the corresponding limit. In the bit groove 331; the inner stud 327 is provided with a matching flat hole 329 horizontally, and the horizontal stop rod 330 runs through the vertical rod axial slot 314 of the matching flat hole 329 and the threaded vertical rod 312 at the same time; by rotating the corresponding Adjusting the screw nut drives the transversely placed limit rod to swing, and then drives the ...

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Abstract

The invention discloses intramedullary nail distal end aiming multi-dimensional adjustment apparatus. The apparatus comprises a square box and an angle adjustment mechanism, wherein the square box comprises a vertical hole and a horizontal hole, the vertical hole and the horizontal hole are respectively equipped with a vertical adjusting rod and a horizontal rod in a penetration and sleeve manner,an axial restraint mechanism and an locking mechanism which are used to prevent the rotation of the vertical adjusting rod and the horizontal rod are arranged, a horizontal corner adjustment mechanism is arranged in the square box to drive the square box to rotate relative to the vertical adjusting rod, and / or a vertical corner adjustment mechanism is arranged in the square box to drive the square box to rotate relative to the horizontal rod. The apparatus integrates the adjustment of multiple dimensions in the square box, has the advantages of high integration, precise structure and convenient adjustment, reduces the node number of a multi-dimensional adjustment support, thereby avoids error factors caused by multi-component connection gaps as much as possible, and improves the degree ofaccuracy. An adjustment manner is simplified to facilitate the adjustment, the adjustment efficiency can be significantly improved, the adjustment time under the exposure to X-rays is reduced, and thereby the safety of patients and medical staff is protected.

Description

technical field [0001] The invention belongs to the technical field of femoral intramedullary nail locking screw distal aiming bracket adjustment, and in particular relates to a multi-dimensional adjustment device for intramedullary nail distal aiming. Background technique [0002] At present, femoral intramedullary nails are used clinically for femoral fractures, which is a minimally invasive treatment method for femoral fractures. Because the intramedullary nail is deformed to a certain extent after implantation into the bone, it is often difficult to lock the nail at the distal end. In order to reduce the difficulty of distal locking, a mechanical aiming device is generally used to improve the success rate of locking. However, the basic principle of the mechanical aiming device used now is to adjust the offset of the aimer through the positioning rod. The success rate of locking the nail for the first time in actual clinical application is not high, and multiple drilling...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/90A61B17/72A61B17/76
CPCA61B17/7233A61B17/74A61B17/88A61B2017/564A61B17/90
Inventor 陈聚伍雒合群
Owner 陈聚伍
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