Angiosupport made of polyhydroxy fatty acid ester its copolymer and its preparation method
A vascular stent, polyhydroxybutyric acid technology, applied in the field of biomedical engineering, can solve problems such as no literature reports
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Embodiment 1
[0031] Example 1: Preparation of a PHB-HV vascular stent with a diameter of 3 mm and a length of 20 mm
[0032] 1. Preparation of PHB-HV solid membrane
[0033] ①, Mix PHB-HV and chloroform in a flask, mixing ratio: 1gPHB-HV plus 20ml chloroform, heat in a water bath, reflux for 15 minutes, and prepare a uniform solution.
[0034] ②, adopt the method of cast film formation, cool the PHB-HV solution prepared above and pour it into a pair of evaporating dishes with a diameter of 6cm, fasten the upper and lower evaporating dishes, and slowly volatilize the chloroform for 2 days.
[0035] ③ After the chloroform is completely volatilized, take the PHB-HV film out of the evaporating dish, put it in a vacuum oven, and dry it in vacuum for 6 hours at a temperature of 37°C, and place it in a desiccator for use.
[0036] 2. Preparation of PHB-HV porous membrane
[0037] ① Pass the purchased salt through a standard sieve, select NaCl particles with a diameter between 50 and 100 μm, and...
Embodiment 2
[0049] Embodiment 2: The diameter is 8mm, and the preparation of length is 50mm PHB vascular stent
[0050] 1. Preparation of PHB solid membrane
[0051] The preparation method is the same as the method for preparing the PHB-HV solid film in Example 1, except that the PHB-HV is replaced by PHB, and the diameter of the evaporating dish is replaced by 10 cm.
[0052] 2. Preparation of PHB porous membrane
[0053] The preparation method is the same as the method for preparing the PHB-HV porous membrane in Example 1, except that PHB-HV is replaced by PHB, the diameter of the evaporating dish is replaced by 10 cm, and the particle size of NaCl is replaced by 100-200 μm.
[0054] 3. Preparation of PHB ribs
[0055] The preparation method is the same as the method for preparing the PHB-HV reinforcing rib in Example 1, except that PHB-HV is replaced by PHB.
[0056] 4. Preparation of PHB stents with a diameter of 8 mm and a length of 50 mm
[0057] The preparation method is the same...
Embodiment 3
[0058] Example 3: Preparation of a PHB-HH vascular stent with a diameter of 12 mm and a length of 100 mm
[0059] 1. Preparation of PHB-HH solid membrane
[0060] The preparation method is the same as the method for preparing the PHB-HV solid film in Example 1, except that PHB-HV is replaced by PHB-HH, and the diameter of the evaporating dish is replaced by 19 cm.
[0061] 2. Preparation of PHB-HH porous membrane
[0062] The preparation method is the same as the method for preparing the PHB-HV porous membrane in Example 1, except that PHB-HV is replaced by PHB-HH, the diameter of the evaporating dish is replaced by 19 cm, and the particle size of NaCl is replaced by 200-300 μm.
[0063] 3. Preparation of PHB-HH ribs
[0064] The preparation method is the same as the method for preparing the PHB-HV reinforcing rib in Example 1, except that PHB-HV is replaced by PHB-HH.
[0065] 4. Preparation of PHB-HH vascular stent with a diameter of 12mm and a length of 100mm
[0066] T...
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