Patent ID: 11883559
Assignee: BEIJING JAYYALIFE BIOTECHNOLOGY CO, LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 10:
11. The preparation method according to claim 8, characterized in that, the lyoprotectant solution in the step 9) is composed of a phosphate buffer solution, hyaluronic acid and sugar, wherein the concentration of the hyaluronic acid is 0.4 to 0.8 mg/100 mL, the concentration of the sugar is 10 to 20 mg/100 mL, and the sugar is one or more of trehalose, lactose, sucrose, glycerin, mannitol, sorbitol, mannose, and glucose; optionally wherein the phosphate buffer solution has a concentration of 10 mmol/L and a pH of 7.0.