Single-rod double-nail external fixing frame

An external fixator and single-rod technology, which is applied in the field of fracture locating frames, achieves the effects of simplifying surgical workload, improving mobility, and simple positioning operations.

Pending Publication Date: 2020-12-04
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 double-nail 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 flexibility of the patient's recovery period action, and reduce healthcare costs

Method used

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  • Single-rod double-nail external fixing frame
  • Single-rod double-nail external fixing frame
  • Single-rod double-nail external fixing frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: When applying an external fixator for fractures such as femur, tibia, humerus, ulna, radius, etc., at present, fixation nails are usually driven vertically to both sides of the fracture, and the exposed ends of each fixation nail are installed with universal joints. The joints are fixed by connecting rods between adjacent universal joints. At least two fixation nails must be driven into each of the two fracture segments to ensure that each fracture segment will not rotate. Since the nailing position may be moderately deflected, it is difficult to connect four fixation nails in series through a connecting rod. The traditional method is to There must be a connecting rod between the two fixing nails, which is fixed by a universal joint. In this external fixing method, there are multiple connecting rods with inconsistent directions. In addition, each universal joint needs to have an adjustment relationship of horizontal rotation and locking and vertical rotation ...

Embodiment 2

[0042] Embodiment 2: On the basis of Embodiment 1, the lower end of the rod body of the fixed nail is designed to be a self-tapping thread segment 21 screwed into the bone, and the upper segment has a threaded segment 22, such as Figure 12 As shown, the top pin nut 11 is installed on the upper threaded section of the fixing nail, and the upper end of the notch pin 10 is supported on the lower edge of the top pin nut 11. The pin nut 11 compresses the notch pin 10 to prevent it from being pushed out.

Embodiment 3

[0043] Embodiment 3: On the basis of Embodiment 1, the fixing method between the notch pin and the fixing nail is as follows Figure 13 In the shown structural form, a radial through hole 13 is provided between the fixing nail and the locking pin, and the locking nail 12 is fixed therethrough. Prevent the notch pin 10 from withdrawing in the axial direction, so that the fixing nail 2 can be firmly fixed without loosening.

[0044] On the basis of the above embodiments, the present invention may also have other transformation forms of the above embodiments, which will not be described in detail. Compared with the structure of the existing fracture external fixator, which frequently has several connecting rods and multiple universal joints, the structure of the above-mentioned external fixator in this embodiment is extremely simplified, and the operation process is simple. The fixing frame installs the component, and the present invention further simplifies the difficulty of op...

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PUM

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Abstract

The invention discloses a single-rod double-nail external fixing frame. The single-rod double-nail external fixing frame comprises a head end clamping plate a, a tail end clamping plate b, a connecting rod and an end-to-end combined locking nail, a nail penetrating round hole is formed in the bottom of a clamping plate groove, nail rod penetrating holes are formed in the two side walls of the clamping plate groove in a penetrating mode, a fit clearance between the two side walls of the clamping plate groove is a locking seam, and the diameter of the nail penetrating round hole is larger than the width of the locking seam; a shaft seat is arranged at the head end of a rod body of the connecting rod, a shaft hole is formed in the center of the shaft seat, and a screw rod section is arrangedat the tail end of the rod body; and the combined locking pin comprises a fixing pin and a notch pin, the lower end of a rod body of the fixing pin is a self-tapping section used for being screwed into sclerotin, at least the lower section of the fixing pin is provided with a notch, and the notch is combined with the notch pin. The external fixing frame is simple in structure, traumaticity causedby an operation to a patient can be reduced as much as possible, the size and the weight of an 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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IPC IPC(8): A61B17/66
CPCA61B17/66A61B2017/564
Inventor 陈聚伍
Owner 陈聚伍
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