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an intramedullary nail

A technology of intramedullary nails and nail rods, applied in the field of intramedullary nails, can solve problems such as unstable fixation, and achieve the effect of easy healing and strong adaptability

Active Publication Date: 2022-08-05
江苏艾为康医疗器械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides an intramedullary nail, which solves the problem of unstable fixation by means of expansion sheets

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0046] The intramedullary nail is made of nickel-titanium alloy material with memory function and superelasticity. The nickel-titanium alloy becomes soft when the temperature is low, and becomes hard when the temperature is high. Figure 10 The shape of the intramedullary nail in the middle toe can be changed into two corners, three corners, four corners, spacing and width, and can be fixed by its elasticity;

[0047] At the same time, it has strong applicability. It can be used in different parts of the body by setting different shapes, and the shapes are all existing intramedullary nails of corresponding parts, such as for toes, femurs, clavicle, arms, etc.;

[0048] After using Nitinol, due to the superelasticity of the compression, the two fractures are placed together, the gap is eliminated, and the fracture is easier to heal.

[0049] Compared with the related art, the intramedullary nail provided by the present invention has the following beneficial effects:

[0050] T...

no. 2 example

[0052] Please refer to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Image 6 , based on the intramedullary nail provided by the first embodiment of the present application, the second embodiment of the present application proposes another intramedullary nail. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0053] Specifically, the difference between the intramedullary nail provided by the second embodiment of the present application is that the intramedullary nail includes an intramedullary nail used for femoral shaft fractures, and the intramedullary nail includes a rod fixing portion 1 with a larger diameter and a The expandable part 2 of the nail shaft with a slightly smaller diameter, wherein a strip-shaped cavity 4 is opened inside the entire intramedullary nail, and the strip-shaped cavity 4 penetrates the f...

no. 3 example

[0060] Please refer to Figure 7 , Figure 8 and Figure 9 , based on the intramedullary nail provided by the first embodiment of the present application, the third embodiment of the present application proposes another intramedullary nail. The third embodiment is only a preferred mode of the second embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0061] Specifically, the difference between the intramedullary nail provided by the third embodiment of the present application is that, in the intramedullary nail, the end of the nail rod fixing portion 1 is connected with a locking mechanism 11 through a locking hole assembly 12;

[0062] The locking mechanism 11 includes a connecting shaft 111 , a second annular groove 116 is formed on the upper side of the connecting shaft 111 , and an annular sleeve is sleeved on the surface of the connecting shaft 111 and located inside the second annular groo...

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Abstract

The present invention provides an intramedullary nail. The intramedullary nail is made of a nickel-titanium alloy material with memory function and superelasticity, and the intramedullary nail is made into the current corresponding shape of the intramedullary nail according to the site of use. Intramedullary nails, including intramedullary nails for femoral shaft fractures, the intramedullary nails include a nail rod fixing part and a nail rod expandable part, the nail rod expandable part is connected to one end of the nail rod fixing part, so Both the expandable part of the nail shaft and the fixed part of the nail shaft are provided with strip-shaped cavities, and are connected between the strip-shaped cavities inside the fixed part of the nail shaft and the expandable part of the nail shaft. The intramedullary nail provided by the present invention, by using the intramedullary nail made of nickel-titanium alloy, has memory function, super elasticity and strong adaptability, and can be correspondingly set as the intramedullary nail used in the corresponding body part, and its elasticity can be used. Do fixation, and because of the superelasticity of the compression, the two fractures are aligned together, the gap can be eliminated, and the fracture is easier to heal.

Description

technical field [0001] The present invention relates to the field of intramedullary nails, in particular to an intramedullary nail. Background technique [0002] Intramedullary nails are orthopaedic internal fixation devices in medical devices. The structure has an intramedullary nail rod, a proximal locking screw hole is provided at the proximal end of the intramedullary nail rod, a decompression plane is provided on the surface of the intramedullary nail rod, and more than one long strip-shaped decompression plane is provided on the surface of the intramedullary nail rod. The decompression plane can be from the proximal end of the intramedullary nail rod to the distal end of the intramedullary nail rod, and the proximal end of the intramedullary nail rod is provided with a locking screw positioning screw hole and a connecting sleeve positioning groove. [0003] At present, the intramedullary nail is usually fixed in the bone by a screw, which is troublesome to remove; ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/72
CPCA61B17/7258A61B17/7266
Inventor 蒋惠江聂丰
Owner 江苏艾为康医疗器械科技有限公司
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