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

Claim 8:
9. The preparation method according to claim 8, characterized in that, the freeze-drying in the step 9) comprises: placing the finished product G into an drying oven at 5° C., holding for 1 h, cooling to −40° C. and holding for 1 h, heating to −18° C. and holding for 1 h, cooling again to −35° C. and holding for 1 h, starting a vacuum pump to evacuate the drying oven to a vacuum degree of 5 to 10 Pa; heating a partition board to −30° C. in 2 h, evacuating the drying oven to a vacuum degree of 1 to 5 Pa and holding for 15 h; heating the partition board to 0° C. in 1 h and holding for 10 h, then measuring the pressure rise until the pressure rise is less than 1 Pa; heating the partition board to 10° C. in 1 h and holding for 10 h, and measuring the pressure rise until the pressure rise is less than 1 Pa; heating the partition board to 25° C. in 0.5 h and holding for 8 h, and measuring the pressure rise until the pressure rise is less than 1 Pa; and the vacuum degree in said oven is not higher than 30 Pa throughout the drying process.