Degradable shape memory femur internal fixator

A fixed body and memory technology, applied in the direction of internal fixator, fixator, internal bone synthesis, etc., can solve the problems of non-organization, lack of histocompatibility, inability to use orthopaedic fixation equipment, etc., and achieve low cost and obvious market. Competitive advantage, the effect of reducing healthcare costs

Inactive Publication Date: 2020-09-22
田大为
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this polymer composite is not a biodegradable material and cannot be used in the ...

Method used

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  • Degradable shape memory femur internal fixator
  • Degradable shape memory femur internal fixator
  • Degradable shape memory femur internal fixator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The fracture targeted by Example 1 is a fracture occurring at the femoral neck.

[0036] A degradable shape memory femoral internal fixation body, the fixation body, the fixation body is made of biodegradable shape memory material, its phase transition temperature is higher than the refrigerating temperature of the medical refrigerator and lower than the normal body temperature; when the temperature of the fixation body Below the phase transition temperature, the anchor remains in the temporary shape of the shape memory. The fixed body includes a main body and a fixed part, the main body is located in the middle part 1, and the fixed parts are arranged at the upper and lower ends of the main body. The fixing part of the fixing body includes a plurality of conical thorn structures 2 .

[0037] When the fixed body is placed in the medullary cavity of the femur, its temperature rises above the phase transition temperature, the fixed body is stimulated by the temperature, ...

Embodiment 2

[0043] What embodiment 2 is aimed at is intertrochanteric fracture.

[0044] A degradable shape memory femoral internal fixation body, the fixation body, the fixation body is made of biodegradable shape memory material, its phase transition temperature is higher than the refrigerating temperature of the medical refrigerator and lower than the normal body temperature; when the temperature of the fixation body Below the phase transition temperature, the anchor remains in the temporary shape of the shape memory. The fixed body includes a main body and a fixed part, the main body is located in the middle, and the fixed parts are arranged at the upper and lower ends of the main body. The fixing part of the fixing body includes a plurality of conical thorn structures.

[0045] After the fixed body is placed in the medullary cavity of the femur, its temperature rises above the phase transition temperature, the fixed body is stimulated by the temperature, and automatically returns from...

Embodiment 3

[0051] What embodiment 3 is aimed at is femoral diaphysis fracture.

[0052] A degradable shape memory femoral internal fixation body, the fixation body, the fixation body is made of biodegradable shape memory material, its phase transition temperature is higher than the refrigerating temperature of the medical refrigerator and lower than the normal body temperature; when the temperature of the fixation body Below the phase transition temperature, the anchor remains in the temporary shape of the shape memory. The fixed body includes a main body and a fixed part, the main body is located in the middle, and the fixed parts are arranged at the upper and lower ends of the main body. The fixing part of the fixing body includes a plurality of conical thorn structures.

[0053] After the fixed body is placed in the medullary cavity of the femur, its temperature rises above the phase transition temperature, the fixed body is stimulated by the temperature, and automatically returns fr...

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PUM

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Abstract

The invention discloses a degradable shape memory femur internal fixator which comprises a fixator body, the fixator body is made of a biodegradable shape memory material, and the phase transition temperature of the fixator body is higher than the refrigeration temperature of a medical refrigeration box and lower than the body temperature of a normal human body; and when the temperature of the fixator body is lower than the phase transition temperature, the fixator body is kept in a temporary shape for shape memory. The biodegradable shape memory material comprises the following raw materials:50-80% of polylactic acid, 0-40% of poly epsilon-caprolactone, 0-18% of a lactide-epsilon-caprolactone copolymer, 0-40% of an inorganic filler, 0-1% of a silane coupling agent, 0-1% of a coloring agent and 0-1% of white oil. The degradable shape memory material is good in air permeability and water resistance, has a memory function, and can automatically recover to the original shape when a molded fixing material is heated.

Description

technical field [0001] The present invention relates to an orthopedic medical device or device, more specifically, to a degradable fracture fixation device that utilizes shape memory materials to achieve internal fixation of femoral fractures. Background technique [0002] Femoral fractures are clinically more common fractures, such as hip joint fractures (including femoral neck fractures and femoral intertrochanteric fractures), femoral shaft fractures. Femoral fractures are caused by various factors such as direct violent blows, falling from heights, and vehicle impacts; among them, the femoral neck and trochanter are the turning points of the trunk and lower limbs, and the stress is relatively concentrated, so this part is also a good place for fractures. Hip joint fractures can also occur under relatively small external forces, especially in the elderly because of osteoporosis. Due to the stretching of limb muscles and ligaments, femoral fractures often produce shorteni...

Claims

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Application Information

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IPC IPC(8): A61B17/68A61B17/74C08L67/04C08L91/06
CPCA61B17/68A61B17/74C08L67/04C08L2205/025C08L2205/035C08L91/06
Inventor 田大为熊敏何宏生陈洁刘娜
Owner 田大为
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