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Bone nail for the heel and osteosynthesis suite

A bone nail and heel technology, which is applied in the field of osteosynthesis kits, can solve the problems of small curvature radius and inability to consider the application of the heel area

Inactive Publication Date: 2014-08-06
帕拉贡28公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, partially curved tibial nails are known, but the radius of curvature of said known nails is relatively small, i.e. in the range of 100 and 120 mm, so the application of such nails in the heel area is likewise not conceivable.

Method used

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  • Bone nail for the heel and osteosynthesis suite
  • Bone nail for the heel and osteosynthesis suite
  • Bone nail for the heel and osteosynthesis suite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0058] figure 1 The lower leg is shown in a position rotated approximately 45° medially. The figure shows the bone which is important for the application of the bone screw according to the invention. This is primarily the calcaneus 1, the talus 2 and the tibia 3. The fibula 4, navicular 5, cuneiform 6 and cuboid 7, also shown, are drawn for completeness purposes only.

[0059] exist figure 2 The bone screw according to the invention, which is formed as an implant 8 , is shown in the middle, which is implanted through the calcaneus 1 and the talus 2 to the lower part of the tibia 3 . like image 3 As shown, the implant 8 is continuously curved in a plane with a radius of curvature R of typically 190 mm. The bend is over the entire length L of the implant 8 I Extended above, this length is typically 140mm. its diameter D 1 Usually 11mm. Length L of implant 8 I and diameter D 1 The ratio between L I / D 1 Usually 12.7.

[0060] The implant 8 comprises a plurality of...

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Abstract

Set as a bone peg for the heel. It comprises a front part (15) intended for introduction into a bone and having an apex (17) and a rear part (16) having a tip (19). The rear portion (16) is rigid over a length of at least 120mm measured from the end (18). The bone screw bends in a plane, the bend having a radius of curvature of at least 130 mm for each infinitesimal segment of the bone screw. The following advantages are achieved by the bone screw according to the invention and thanks to the surgical technique which can be achieved thereby: the rear foot can be adjusted with high precision relative to the axis of the calf and the axis of the knee, avoiding the risk of damage to the plantar nerve; and Less invasive implantation compared to surgical techniques using other staples.

Description

technical field [0001] The present invention relates to a bone nail for the heel and an osteosynthesis kit. Background technique [0002] Bending intramedullary nails in partial regions have long been known. As an example, so-called ENDER nails can be cited here. However, these known nails are designed elastically and flexibly for their intended use, so that they already bend when subjected to small loads. Due to the flexibility of said known nails, it does not matter that the middle part is straight and has no bends. Said known ENDER nails are also distinguished by their relative length and slenderness. In the case of ENDER, the ratio between the diameter of the nail and the length of the nail is in the range of 1:60 to 1:110. Its use in the heel area is ruled out for this reason. [0003] Partially curved tibial nails are also known, but the radius of curvature of these known nails is relatively small, ie in the range of 100 and 120 mm, so the use of such nails in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/17A61B17/68A61B17/16A61B17/72
CPCA61B17/7291A61B17/7283A61B17/1717A61B17/7208A61B17/72A61B2017/1775A61B17/7233A61B17/1775
Inventor K·克劳
Owner 帕拉贡28公司
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