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Surface treatment process and titanium nail for bone setting
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A technology for surface treatment and titanium nails, which is applied in the field of surface treatment and titanium nails for bone setting, which can solve the problems of difficulty in removing nails, inability to remove them, and pain of patients
Active Publication Date: 2020-10-23
浙江广慈医疗器械有限公司
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Summary
Abstract
Description
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Problems solved by technology
[0003] However, when the titanium-based orthopedic implant nails (i.e., titanium nails) are taken out after recovery, due to the good biocompatibility of the titanium-based materials, it will be difficult or impossible to take out the nails, which brings great inconvenience to the surgeon. Great hidden danger of nail removal, and at the same time bring another pain to the patient
Method used
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Examples
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Effect test
Embodiment 1
[0033] 1) Soak the titanium nail sample with one or more of absolute ethanol, acetone or metal surface degreaser, and then perform ultrasonic cleaning to remove the stain on the surface of the sample;
[0034] 2) Select 40-mesh sand, and then continue to sandblast the surface of the titanium nail sample under an air pressure of 0.2Mpa for 2 minutes. After completion, put it in pure water to clean and dry.
[0035] 3) Set the temperature of the cold trap of the lyophilizer at -20°C and pre-cool for 1 hour;
[0036] 4) Put the titanium nail sample into the vacuum chamber of the freeze dryer to seal it before pumping air, and wait for the temperature of the cold trap of the freeze dryer to drop to -45°C;
[0037] 5) Start timing when the air is evacuated to an internal vacuum of 14Pa, and last for 12 hours;
[0038] 6) Take out the titanium nail sample after finishing;
[0040] 8) Make the prepared hyaluronic acid solution wet part...
Embodiment 2
[0046] In this embodiment, the size of the sand particles in step 2) of the first embodiment is selected as 100 mesh, and the rest of the conditions are the same as those of the first embodiment.
Embodiment 3
[0048] In this embodiment, the air pressure in step 2) of the first embodiment is selected as 0.8Mpa, and other conditions are the same as those of the first embodiment.
[0049] Comparing Examples 1, 2, and 3 comprehensively, the larger the number of sand grains and the greater the air pressure, the more porous structures are produced on the surface of the titanium nails, and the larger the porous pore size, the sandblasting process is selected in operability. The surface is very simple and easy to implement, but the porous structure formed is uneven, and the hyaluronic acid attached to the surface is easy to fall off, so it is impossible to achieve a very good nail removal effect. Moreover, the pore diameter on the surface of the titanium nail made by the sandblasting process is relatively large, and it is mainly used in the case of a relatively large size of the titanium nail.
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Abstract
The invention provides a surface treatment technology of a titanium nail for fracture setting and the titanium nail. Through roughening treatment, including one of sand blasting, acid etching, combination of sand blasting and acid etching, anodic oxidation, micro-arc oxidation and combination of anodic oxidation and micro-arc oxidation, of the surface of the titanium nail, the surface obtains a rough or porous structure, then residual liquid in the rough or porous structure is removed through freeze-drying, and then hyaluronic acid is loaded through vacuum suction filtration, so that the surface of the titanium nail has the specific capability of reclining bone surfaceadhesive growth, the good biocompatibility of the titanium nail with bone is eliminated, finally, an easy nail removal effect is obtained, the surgical time is shortened, and the pain of a patient is reduced.
Description
technical field [0001] The invention relates to the field of medical devices, in particular to a titanium nail for bone setting and a surface treatment process of the titanium nail. Background technique [0002] The titanium nail mentioned in this article is a kind of fixing nail used in medical devices. It is used in conjunction with the bone plate to achieve the fixation of fractures and bone fragments, and the effect is remarkable. [0003] However, when the titanium-based orthopedic implant nails (i.e., titanium nails) are taken out after recovery, due to the good biocompatibility of the titanium-based materials, it will be difficult or impossible to take out the nails, which brings great inconvenience to the surgeon. Great hidden danger of taking the nail, and bringing pain again to the patient at the same time. Contents of the invention [0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a surface treatment...
Claims
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Application Information
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