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Intramedullary nail provided with shape memory material elements

A technology of memory element and memory material, applied in the field of intramedullary nails

Inactive Publication Date: 2008-02-13
ORTHOFIX SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] These devices do not require the use of x-rays, but they have the disadvantage of requiring multiple steps, all of which are carried out with considerable care and precision

Method used

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  • Intramedullary nail provided with shape memory material elements
  • Intramedullary nail provided with shape memory material elements
  • Intramedullary nail provided with shape memory material elements

Examples

Experimental program
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Embodiment Construction

[0052] Referring first to Figures 1-15, there is shown an intramedullary nail of the present invention, generally indicated at 10, adapted for insertion into a fractured elongated bone 12, such as a femur or tibia.

[0053] Nail 10 includes a shaft 14 extending between a proximal end 16 and a distal end 18 .

[0054] The rod 14 preferably consists of a cylindrical tubular body. According to one aspect of the invention, the rod 14 comprises a plurality of elements 20 obtained from at least one shape-memory material and a plurality of seats 19 formed in the rod 14 for receiving the elements 20 .

[0055] Elements 20 are preferably similar to each other.

[0056] The element 20 is adapted to take a first shape or configuration and a second shape or configuration in which said element 20 is retrievably fitted into a corresponding seat 19 so as to enable the nail to be inserted into the bone, while In this second shape or configuration, said element 20 protrudes from a correspond...

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Abstract

An intramedullary nail (10, 110, 210, 310, 410, 510, 610) suitable for insertion in a fractured elongate bone (12), of the type comprising a stem (14, 114, 214, 314, 414, 514, 614) extended between a proximal end (16, 116, 216, 416, 516, 616) and a distal end (18, 118, 218, 418, 518, 618). The nail comprises a plurality of elements (20, 120 , 220, 320, 420, 520, 620) realised with at least one shape-memory material, a plurality of seats (19, 119, 219, 319, 419, 519, 619) formed in the stem (14, 114, 214, 314, 414, 514, 614) for housing the elements (20, 120 , 220, 320, 420, 520, 620). The elements (20, 120 , 220, 320, 420, 520, 620) are suitable to take a first shape wherein they are retractably housed in the respective seats (19, 119, 219, 319, 419, 519, 619) and a second shape wherein they project from the respective seats (19, 119, 219, 319, 419, 519, 619).

Description

technical field [0001] The present invention generally relates to an intramedullary nail adapted for insertion into a fractured elongated bone and a method of applying the nail within said bone. [0002] In particular, the present invention relates to an intramedullary nail adapted for insertion into a fractured elongated bone, such as a femur or tibia, comprising a stem extending between a proximal end and a distal end. Background technique [0003] Intermedullary nails are known, which are surgically inserted into fractured elongated bones and fixed therein so as to reconfigure the original bone shape while restoring the firmness of the bone so that the callus regeneration mechanism can be properly generated. [0004] The shafts of these intramedullary nails are generally substantially cylindrical and they can be solid and hollow. [0005] In order to fix the intramedullary nail on the part of the bone to be reconfigured, two or more offset holes are usually provided on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/72A61B17/00
CPCA61B2017/00867A61B17/7266A61B17/7258A61B17/68A61B17/72
Inventor M·科蒂G·马拉齐G·马里尼G·罗西L·罗西D·文图里尼
Owner ORTHOFIX SRL
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