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Improved arthrodesis device

A technology for fixation devices and joints, applied in the field of improved joint fixation devices, can solve problems such as insufficient bone retention, lack of stability, and bone joint failure in the ankle

Pending Publication Date: 2020-09-11
IN2BONES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although such known arthrodesis devices are generally satisfactory and have thus far provided significant improvements in the treatment of patients with advanced ankle bone lesions, they have yet to be perfected
In fact, it has been specifically observed that once the arthrodesis pin of such a device has been implanted in the patient, the pin may in some cases lack stability in use and lead to insufficient retention of the bony body of the joint involved
This creates a risk of failure of the osseointegration of the ankle bones

Method used

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Embodiment Construction

[0023] The present invention relates to an arthrodesis device designed to be implemented in the case of arthrodesis of a patient's ankle joint, in particular when the patient's ankle joint is in a state of deterioration too advanced to be technically employable otherwise. When too serious surgery. Preferably, the patient to which the arthrodesis device relates is a human patient. More specifically and advantageously, the ankle arthrodesis device according to the present invention is for tibiotalarcalcaneal (TTC) arthrodesis by pinning, preferably transplantar, and more preferably by a posterior approach (TTC) device. As an example, an arthrodesis device according to the invention can advantageously be implemented for the treatment of patients suffering from advanced forms of degenerative osteoarthritis, post-traumatic osteoarthritis, inflammatory osteoarthritis, osteonecrosis of the talus, Charcot osteoarthropathy , and even in cases where one or more surgical procedures suc...

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Abstract

The invention relates to an ankle arthrodesis device comprising a pin (1) intended to be implanted in a tibia (Ti), a talus (Ta) and a calcaneus (Ca), the pin (1) comprising a proximal portion (2) extending along a first direction (A-A'), and a distal portion (4) extending along a second direction (B-B') that intersects the first direction (A-A'), the distal portion (4) being provided with a firstoblong attachment opening along the second direction (B-B'), the device comprising a first compressive attachment means (9A) of the compression screw type (9A), the pin (1) being designed and configured such that, when it is implanted with its distal portion (4) oriented toward the back of the ankle, the first attachment opening is arranged to receive and guide the first attachment means (9A) along a first attachment direction (F1-F1') extending along said talus (Ta) and calcaneus (Ca) to attach the nail to the talus (Ta) and to the calcaneus (Ca).

Description

technical field [0001] The present invention relates to the general technical field of devices intended for arthrodesis, more specifically of the ankle joint, especially in the context of orthopedic treatment. [0002] More particularly, the present invention relates to an ankle arthrodesis device comprising nails intended to be implanted in the tibia, talus and calcaneus of a patient, said nails comprising a proximal portion extending generally along a first longitudinal direction of extension , and a distal portion that extends the proximal portion and extends substantially along the second longitudinal extension direction, the distal portion is provided with a first fastening hole. Background technique [0003] In order to treat certain bony lesions of the ankle leading to deterioration or disappearance of the articular cartilage, such as osteoarthritis, it is known to perform arthrodesis of the associated ankle joint, i.e., aimed at causing osseointegration of the bone b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/17A61B17/72
CPCA61B17/1725A61B17/1775A61B17/72A61B17/7225A61B2017/681A61B17/7291A61B2017/564
Inventor 斯蒂芬·卡恩斯
Owner IN2BONES
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