Distal radius palmaris locking plate

Abstract

The invention relates to a distal radius palmaris locking plate. The plate comprises a main locking plate body which is matched with the radius, the main locking plate body comprises a distal radius fixing part and a branch part which are connected with each other, a protruding strip is arranged on the portion, close to the radius, at the edge of the left end of the distal radius fixing part, andthe edge of the upper portion of the distal radius fixing part is subjected to ultra-thin design; the main locking plate body is made of a PEEK composite material, and the distal radius palmaris locking plate is stable in structure, capable of not being loosened during use and good in compatibility with the skeleton of the human body.

Description

technical field [0001] The invention relates to the technical field of medical instruments for orthopedic surgery, in particular to a volar locking plate at the distal end of the radius. Background technique [0002] Distal radius fracture refers to the cancellous bone fracture located within 2.5-3cm from the articular surface of the radiocarpal joint. At present, the distal radius locking plate is the most commonly used medical device in distal radius fracture surgery. At present, most of the distal radius locking plates used clinically are replaced with volar plates. During the fixation, due to the unreasonable structure and high material density, it will cause secondary pain to the patient, and even affect the connection and growth of the broken bone. Patients inflict irreparable pain. [0003] In recent years, with the development of new materials, polyether ether ketone (PEEK) has entered the realization of medical researchers. It is a new generation of aromatic polyme...

AI Technical Summary

Problems solved by technology

[0005] The bottleneck in the preparation of PEEK composites is prepreg. It is known that carbon fiber materials are pre-impregnated in PEEK prepregs to obtain PEEK modified carbon fiber materials. However, the tensile strength, Tensile modulus, flexural strength, flexural modulus, impact strength and other properties are not very ideal. Taking PEEK prepreg unidirectional fabric and composite materials made of T700 carbon filament as an example, the prepreg with a density of 800 / mm The 0° tensile strength of the unidirectional fabric is 2600Mpa, the tensile modulus is 139Gpa, the bending strength is 2254Mpa, and the bending modulus is 131Gpa. , 180°...360°direction of the carbon fiber composite material obtained by laying up layers, sampled every 10° between 0-180° and processed into tensile bending and impact splines. The tensile strength is about 800-1100Mpa. The tensile modulus is 40-50Gpa, the bending strength is 800-900Mpa, the bending modulus is 40-50Gpa, and the impact strength is 1.8-1.9KJ / m2

[0006] Although the above-mentioned materials can be used to prepare the volar locking plate of the distal radius, the performance of the volar locking plate of the distal radius prepared by the above-mentioned materials prepared by the prior art is not good, so it is urgent to obtain various products through the improvement of the process method. PEEK composite material with excellent mechanical properties is used to prepare the volar locking plate of the distal radius

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