3D printing porous imitated trabecular arc-shaped intramedullary shank

A 3D printing and intramedullary handle technology, applied in the field of medical device research, can solve the problems of normal mechanism damage, affecting function and recovery, etc.

Pending Publication Date: 2020-07-31
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the treatment method, the vertical length of the residual bone in the proximal femur is not enough to fix the conventional medullary nail, so a series of structures in the normal proximal femur including the greater trochanter, the lesser trochanter and the femoral head have to be resected and related prostheses have to be used. Instead, this approach causes unnecessary damage to normal structures, seriously affecting postoperative function and recovery

Method used

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  • 3D printing porous imitated trabecular arc-shaped intramedullary shank
  • 3D printing porous imitated trabecular arc-shaped intramedullary shank

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] A 3D printed porous imitation trabecular arc-shaped intramedullary handle of the present invention comprises: a medullary needle part 1 and a connecting part 2; Trabecular bone structure, the needle portion 1 is provided with a number of pores 101 .

[0022] Preferably, the pores 101 are arranged in multiple layers from outside to inside, the diameter of the pores 101 gradually decreases from outside to inside, and the porosity of the needle part 1 gradually decreases from outside to inside.

[0023] Preferably, the radial dimension of the needle part 1 gradually decreases from the base to the end.

[0024] Further, the curvature of the outer edge of the medullary needle part 1 is greater than that of the inner edge.

[0025] Preferably, the base of the n...

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Abstract

The invention discloses a 3D printing porous imitated trabecular arc-shaped intramedullary shank which comprises a medullary needle part and a connecting part, wherein the base part of the medullary needle part is fixedly connected to the connecting part, the medullary needle part is of a bone trabecula structure, and a plurality of holes are formed in the medullary needle part. The device is perfectly matched with the proximal femoral medullary cavity, conforms to the biomechanics of the femur, and solves the problem of defect reconstruction close to the proximal femur.

Description

technical field [0001] The invention relates to the field of medical device research, in particular to a 3D printed porous imitation trabecular arc-shaped intramedullary stem. Background technique [0002] For tumorous defects or traumatic defects in the upper or middle part of the femur, the conventional treatment methods are generally hip replacement + modular osteotomy socket + femoral medullary needle. Due to the limitation of the treatment method, the vertical length of the residual bone in the proximal femur is not enough to fix the conventional medullary nail, so a series of structures in the normal proximal femur, including the greater trochanter, the lesser trochanter and the femoral head, have to be resected and related prostheses should be used. Instead, this approach causes unnecessary damage to normal structures, seriously affecting postoperative function and recovery. Contents of the invention [0003] The present invention aims to provide a 3D printed porou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/36
CPCA61F2/36A61F2002/2825A61F2002/2835A61F2002/30784A61F2002/30985A61F2220/0008A61F2310/00023
Inventor 屠重棋卢敏勋张瑀绮
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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