Single-rod four-nail fracture external fixation frame

An external fixator and single-rod technology, applied in the field of fracture positioning frame, to achieve the effect of reducing operation cost, volume and weight, and low manufacturing cost

Pending Publication Date: 2021-03-12
陈聚伍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at various disadvantages of the current fracture fixation methods, the present invention provides a single-rod four-nail fracture external fixator with simplified structure but better practicability, so as to achieve the purpose of minimally invasive and greatly simplified structure, which is beneficial to the recovery period of patients Flexibility and reduced healthcare costs

Method used

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  • Single-rod four-nail fracture external fixation frame
  • Single-rod four-nail fracture external fixation frame
  • Single-rod four-nail fracture external fixation frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: A single-rod four-nail external fixator with absolute adjustment of the head end relative to the adjustment end, such as figure 1 As shown, the fixing frame includes two head-end fixing parts 3 and two head-end fixing nails 2 , two end multi-dimensional fixing parts 5 and two end fixing nails 2 , and a straight connecting rod 1 .

[0035] The outer sides of the two fixing nails at the head end respectively fix the head end of the connecting rod through the first end fixing part 3, and the outer sides of each fixing nail at the end respectively fix the end of the connecting rod through the end multi-dimensional fixing part 5.

[0036] As can be seen from the figure, the lower end of the rod body of each fixing nail 2 is a self-tapping thread section 21 for screwing into the bone, and the upper section has a threaded section 22 for installing a lock nut.

[0037] Such as figure 2 There is a connecting rod through hole 31 on one side of the main body of the...

Embodiment 2

[0049] Embodiment 2: A single-rod four-nail external fixator for fractures with the head end fixed and the end adjusted. The structure of the external fixator is as follows: Figure 8 with Figure 9 As shown, it includes two head-end fixing structures and two head-end fixing nails 2 , two end multi-dimensional fixing parts 5 and two fixing nails 2 .

[0050] It can be seen from the figure that the head-end fixing structure means that at least two through-holes are set at the head-end of the connecting rod. Secured by lock nut. The lower ends of the rod bodies of the four fixing nails 2 are self-tapping thread sections 21 for screwing into the bone, and the upper section has a threaded section 22 .

[0051] The outer sides of each fixing nail at the end respectively fix the end of the connecting rod through the multi-dimensional fixing member 5 at the end. Specifically, one side of the main body of the terminal multi-dimensional fixing member 5 has a connecting rod through h...

Embodiment 3

[0053] Embodiment 3: On the basis of Embodiment 1, the connecting rod in this embodiment has a curved arc 9 in the middle of the straight connecting rod. Such as Figure 10 As shown, nails A and B are still parallel, and nails C and D are parallel, but nails A and B on both sides are inclined outward at the same time, and nails C and D are inclined outward at the same time. At this time, only straight connecting rods are used. The four nails A, B, C, and D cannot be fixed as one. However, the angle α between the extension line of the connecting rod perforation of nail A and nail B and the extension line of nail C and nail D can be easily determined, so that only one angle bending tool is needed to bend the straight connecting rod to The arc of the included angle α can realize the fixing of the four nails A, B, C, and D as one. Furthermore, the same structural performance as that of Embodiment 1 is realized.

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Abstract

The invention discloses a single-rod four-nail fracture outer fixing frame. The outer fixing frame comprises two head end fixing structures and corresponding fixing nails. And at least two end multi-dimensional fixing pieces and corresponding fixing nails. The outer sides of the two fixing nails at the head end fix the head end of the connecting rod through head end fixing structures, and the outer sides of the fixing nails at the tail end fix the tail end of the connecting rod through tail end multi-dimensional fixing pieces. The external support is simple in structure, traumaticity caused byan operation to a patient can be reduced as much as possible, the size and the weight of the external support in the rehabilitation period of the patient can be reduced, action flexibility of the patient in the rehabilitation period is improved, compression of the external support to a fracture part is reduced, and recovery is facilitated.

Description

technical field [0001] The invention belongs to the technical field of fracture positioning frames, and in particular relates to an external fixation frame for positioning and fixing fractures only through a single connecting rod and four nails. Background technique [0002] Fixation methods for fractures include plate fixation, external frame fixation, and intramedullary nail fixation. Plate internal fixation has the advantages of simple operation and short learning period, but the current nail-plate combination structure has problems: large trauma, high chance of accidental injury, infection And non-union, delayed union, broken nails and broken plates occur from time to time, and the postoperative scar is large, which affects the appearance and does not conform to the principle of minimally invasive. There are many kinds of fixation frames used in the treatment of fractures, but all of them have the disadvantages of complex structure and many components. The existing exter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/66
CPCA61B17/66A61B2017/564
Inventor 陈聚伍陈泓丹徐涤
Owner 陈聚伍
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