Riveting nail for medical skelecton

A technology of fixing nails and riveting, which is applied in fixers, internal fixators, and internal bone synthesis, etc. It can solve the problems of low screw firmness, inability to use screws, and easy lateral compression of bones, etc., to achieve strong fastening force and difficult Good effect of displacement and firmness

Active Publication Date: 2009-05-06
梁巍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technique of connecting with steel plates and fixing with screws has the following problems: the firmness of screw fixing depends on the thickness, density and resistance of the cortical bone of the connected bone. , orbital bone and cancellous bone, due to their small thickness and resistance, the firmness of screw fixation is not high, the strength is low, and even screw fixation cannot be used
In addition, when the screw-type bone nail is screwed into the bone, it is easy to compress the bone laterally, causing the bone to break, resulting in the consequence that it cannot be fixed
Therefore, this solution requires the doctor to operate very carefully during the operation and select a suitable fixing position, and this solution is not suitable for the connection surgery of thin bones, resulting in limitations in application.

Method used

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  • Riveting nail for medical skelecton
  • Riveting nail for medical skelecton
  • Riveting nail for medical skelecton

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Such as figure 1 As shown, the operation process is shown by the arrow in the figure, the fractured bones A and C of the method of the present embodiment are connected by the fixing plate B and 4 fixing nails 10, as figure 1 shown in the first figure. Firstly, the fractured bones A and C are initially positioned at fixed positions, and connecting holes 12 corresponding to the fixing holes 11 on the fixing plate B are respectively opened on both sides of the connecting seam of the bones A and C, and the connecting holes 12 can pass through laser opening, combining figure 1 shown in the first and second figures. Then, pass the end of the fixing nail 10 through the fixing hole 11 of the fixing plate B and insert it into the connection hole 12 of the bones A and C, and the nail cap at the front end of the fixing nail 10 is stuck on the outside of the fixing plate B, as shown in the second figure Show. Apply pulling force to the core of the fixing nail 10 to deform the e...

Embodiment 2

[0061] The method of the present embodiment is to directly connect the fractured bones A and C through the fixation nail 10, and its fixation process is as follows: figure 2 indicated by the arrow. Firstly, the broken bones A and C are preliminarily positioned in a fixed position, and a connecting hole 12 is opened on the bone C, and the connecting hole 12 runs through the connecting seam to another piece of bone A, as shown in the first figure. Then, the end of the fixing nail 10 is passed through the connecting hole 12 through one of the bones C to the other bone A, and the nail cap at the front end of the fixing nail 10 is stuck on the outside of the bone C. After the fixing nail 10 is installed, a pushing force is applied to its core, as shown in the second figure. The core body deforms the end of the fixing nail 10, cooperates with the nail cap to connect the two bones A and C, and then pulls out the core body to complete the fixation of the bones A and C, as shown in t...

Embodiment 3

[0068] This embodiment is a further improvement on the structure of embodiment 1, as Figure 5A As shown, the improved structure is that the end of the nail body 1 is processed to be composed of four separate expansion sheets 8 . When a pulling force is applied to the core body 4, since the end of the nail body 1 is in the structure of a separate expansion piece 8, it is easier to deform when it is squeezed by the expansion head 5. The fixation nail in this embodiment is made of titanium-niobium metal material, and is suitable for operations requiring high fixation force. Due to the need for high fixing force, in order to be suitable for the structure of small-sized fixing nails, the material strength of the fixing nails can only be improved so that it is not easily deformed. Therefore, the end of the nail body 1 is processed into an expansion sheet 8 structure, which is conducive to the deformation of the end of the nail body 1, and the strength of the main part of the nail ...

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Abstract

A method for fixing bone in orthopaedic repair operation includes such steps as primary location of fractured bone at the fixing position, installing the fixing nails, deforming the end of said nails for fixing it at the internal side of bone, and using the nail cap to connect the bone to the fixing plate. Said nail features that the deformation at its end is controllable.

Description

technical field [0001] The invention relates to the field of medical orthopedic repair and fixation operations, in particular to a medical bone fixation method and a fixation nail thereof. technical background [0002] After the bones of the human body are broken due to various reasons, during surgical treatment, the bones are first reset, the two sections are combined, and then fixed with orthopedic fixation equipment. In terms of fixation, external fixation or internal fixation is used according to the specific conditions of the fracture. In terms of internal fixation, at present, steel plates and screws or Kirschner wires are used to internally fix the two broken ends of the bone. This technique of connecting with steel plates and fixing with screws has the following problems: the firmness of screw fixing depends on the thickness, density and resistance of the cortical bone of the connected bone. , Orbital bone and cancellous bone, due to their small thickness and resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/58A61B17/68A61B17/86
Inventor 梁雄梁巍
Owner 梁巍
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