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Fixation device

A fixation device and fixation equipment technology, applied in fixers, internal fixators, medical science, etc., can solve problems such as loss of fixation and bone rupture

Inactive Publication Date: 2013-01-02
SMITH & NEPHEW PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in cases where the pin is inserted too deep into the bone, the bone may crack around the screw threads and lose all fixation
In this case, a larger screw will need to be inserted, or possibly a screw in a new location

Method used

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Examples

Experimental program
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Embodiment Construction

[0071] Referring to the drawings and initially to Figure 2a, there is shown a cylindrically oriented SMP plug generally indicated by reference numeral 2 having an outer wall 4 and a channel 6 centrally in the plug 2 and extending along its longitudinal axis. The channel 6 terminates at the front end 8 of the bung 2 in an opening 10 adapted to receive a metal screw 12 . The length of the channel 6 is adapted to the length of the screw 12 shaft.

[0072] In this embodiment, the bung 2 is oriented by stretching it along its longitudinal axis. This causes the plug 2 to become longer and its diameter narrowed.

[0073] Figure 2B to Figure 2D Only a single plug 2 is shown placed into a prepared cavity 14 in bone 16 adjacent to the fracture (not shown). However, it is recognized that a plurality of plugs 2 surrounding the fracture can be placed in a similar manner. In this example, if Figure 2B As shown in, the plug 2 is inserted into the cavity 14, and then as Figure 2C Rel...

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PUM

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Abstract

The present invention relates to a fixation device and in particular to a device which aids anchoring of orthopaedic fasteners and implants to bone. The invention also relates to a fixation apparatus and a method of fixation.

Description

technical field [0001] The present invention relates to a fixation device, and more particularly to a device that facilitates anchoring orthopedic fasteners and prosthetic implants to bone. The invention also relates to a fixing device and a fixing method. Background technique [0002] The term "fixation" generally refers to the positioning and anchoring of prosthetic implants and orthopedic fasteners, such as screws, pins, plates, adhesives, etc., to healing tissue (such as bone, for example) during a surgical procedure. However, positioning such implants and / or fasteners does not always provide adequate anchoring, and in some cases is inappropriate and detrimental. This problem is particularly evident, for example, during surgical procedures to treat and repair fractures in osteoporotic patients. Osteoporosis is a bone disease in which bone mineral density decreases, making bones more brittle. Consequently, osteoporotic bones are more prone to fracture and are clinicall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/68
CPCA61B17/686A61C8/0018A61C8/0012A61B2017/00867A61B2017/00287A61B2017/00871
Inventor H・蒙特斯德奥卡巴尔德拉斯M・布朗A・汤普森G・豪林
Owner SMITH & NEPHEW PLC
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