Urinary catheter capable of achieving long-acting sustained-release administration function and production method thereof
A urinary catheter and sustained-release technology, which is applied in the field of urinary catheter and its preparation, can solve the problems of fast drug release, easy detachment of coating, and small drug holding capacity, and achieves fast processing speed, slow release speed, and improved ratio. The effect of surface area
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Embodiment 1
[0032] Embodiment one: if figure 1 A urinary catheter that can realize the function of long-term sustained-release drug delivery is shown, including a urinary catheter main tube 1, and a plurality of grooves 2 are arranged on the outside of the urinary catheter main tube 1; the grooves 2 are formed by laser processing technology ; The opening of the groove 2 is located on the outer wall 4 of the urinary catheter in the contact area with the human body. Medicine 6 is housed in the groove 2, and the medicine 6 is powder medicine. The outer surface of the urinary catheter main tube 1 is covered with a slow-release protective film 5 . The sustained-release protective film 5 is a protein film; the drug 6 is an antibacterial agent. The width of the groove 2 is less than 1000 microns; the groove 2 is arranged radially, obliquely, spirally or in a net shape.
[0033] A kind of above-mentioned preparation method of the urinary catheter that can realize the function of long-acting su...
Embodiment 2
[0042] Embodiment two: if figure 2 A urinary catheter that can realize the function of long-term sustained-release drug delivery is shown, including a urinary catheter main tube 1, and a plurality of grooves 2 are arranged on the outside of the urinary catheter main tube 1; the grooves 2 are formed by laser processing technology ; The opening of the groove 2 is located on the outer wall 4 of the urinary catheter in the contact area with the human body. Medicine 6 is housed in the groove 2, and the medicine 6 is powder medicine. The outer surface of the urinary catheter main tube 1 is covered with a slow-release protective film 5 . The slow-release protective film 5 is nano-SiO 2 A film formed by mixing a film and a protein film; the drug 6 is an analgesic. The width of the groove 2 is less than 1000 microns; the groove 2 is arranged in a circular direction.
[0043] A kind of above-mentioned preparation method of the urinary catheter that can realize the function of long-...
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