Continuous microwave drying for vaccines
View Patent ↗A continuous microwave vacuum-drying method includes loading, onto a conveyor belt, a lower half of an integrated container, filing, by a frozen-drug dispenser, a first chamber of a lower half of an integrated container with a frozen compound, exposing, by microwave emitters within a vacuum chamber, the frozen compound of the first chamber of the lower half of the integrated container to microwave radiation to lyophilize the frozen compound into a lyophilized compound, filing, by a reconstitution solution dispenser, a second chamber of the lower half of the integrated container with a reconstitution solution, removing, by the conveyor belt, the lower half of the integrated container out of the vacuum chamber, and sealing, by a container sealer, an upper half of the integrated container onto the lower half of the integrated container to create a prefilled integrated package.
1 . A continuous microwave vacuum-drying method, comprising:
loading, onto a conveyor belt, a lower half of an integrated container;
moving, by the conveyor belt, the lower half of the integrated container into a vacuum chamber;
filing, by a frozen-drug dispenser, a first chamber of a lower half of an integrated container with a frozen compound;
exposing, by microwave emitters within the vacuum chamber, the frozen compound of the first chamber of the lower half of the integrated container to microwave radiation to lyophilize the frozen compound into a lyophilized compound;
filing, by a reconstitution solution dispenser, a second chamber of the lower half of the integrated container with a reconstitution solution;
removing, by the conveyor belt, the lower half of the integrated container out of the vacuum chamber; and
sealing, by a container sealer, an upper half of the integrated container onto the lower half of the integrated container to create an integrated package having reconstitution solution in a first chamber of the integrated package and lyophilized compound in a second chamber of the integrated package.
2 . The continuous microwave vacuum-drying method of claim 1 , wherein the conveyor belt is configured to continuously move the integrated container through the vacuum chamber.
3 . The continuous microwave vacuum-drying method of claim 1 , wherein the microwave emitters within the vacuum chamber are configured to emit microwave radiation at a frequency that selectively heats water molecules within the frozen compound.
4 . The continuous microwave vacuum-drying method of claim 1 , wherein the frozen-drug dispenser and the reconstitution solution dispenser are located within the vacuum chamber.
5 . The continuous microwave vacuum-drying method of claim 1 , wherein the container sealer comprises a press and a heating element configured to thermally bond the lower half of the integrated container to the upper half of the integrated container.
6 . The continuous microwave vacuum-drying method of claim 1 , wherein the frozen compound comprises a vaccine.
7 . The continuous microwave vacuum-drying method of claim 1 , wherein the lower half of the integrated container includes a connector forming a communicable channel between the first chamber and the second chamber.
8 . The continuous microwave vacuum-drying method of claim 7 , wherein the connector comprises a frangible membrane configured to separate the first chamber and the second chamber.
9 . The continuous microwave vacuum-drying method of claim 8 , wherein the integrated package is a syringe having the first chamber and the second chamber separated by the frangible membrane.
10 . A continuous microwave vacuum-drying (CMVD) integrated package assembly system, comprising:
a lower half of an integrated container having a first chamber and a second chamber;
an upper half of the integrated container;
a vacuum chamber configured to maintain a low-pressure gradient between an interior of the vacuum chamber and an exterior of the vacuum chamber;
a frozen-drug dispenser configured to deliver a frozen compound into the first chamber of the lower half of the integrated container;
a microwave emitter configured to emit microwave radiation onto the frozen compound delivered into the first chamber of the lower half of the integrated container;
a reconstitution solution dispenser configured to deliver a reconstitution solution into the second chamber of the lower half of the integrated container;
a container sealer configured to seal the upper half of the integrated container to the lower half of the integrated container to form an integrated package; and
a conveyor belt configured to transport the lower half of the integrated container to the frozen-drug dispenser, the microwave emitter, the reconstitution solution dispenser, and then the container sealer, in order.
11 . The continuous microwave vacuum-drying (CMVD) integrated package assembly system of claim 10 , wherein the conveyor belt is further configured to transport the lower half of the integrated container into and out of the vacuum chamber.
12 . The continuous microwave vacuum-drying (CMVD) integrated package assembly system of claim 10 , wherein the vacuum chamber comprises an automated series of air-lock doors configured to open and close in a timed sequence that permits maintenance of the low-pressure gradient of the interior of the vacuum chamber while the conveyor belt transports the lower half of the integrated container into and out of the vacuum chamber.
13 . The continuous microwave vacuum-drying (CMVD) integrated package assembly system of claim 12 , wherein the conveyor belt is operated in a continuous mode.
14 . The continuous microwave vacuum-drying (CMVD) integrated package assembly system of claim 10 , wherein the frozen compound comprises a vaccine.
15 . The continuous microwave vacuum-drying (CMVD) integrated package assembly system of claim 10 , wherein the microwave emitters are configured to emit microwave radiation at a frequency that selectively heats water molecules within the frozen compound.
16 . The continuous microwave vacuum-drying (CMVD) integrated package assembly system of claim 10 , wherein the lower half of the integrated container further comprises a connector having a frangible membrane.
17 . A large-container continuous microwave vacuum-drying method, comprising:
loading, into an integrated container, a plurality of lower halves of a plurality of integrated packages;
moving, by a conveyor belt, the integrated container into a vacuum chamber;
filing, by a frozen-drug dispenser, a first chamber of one of the plurality of lower halves of the plurality of integrated packages loaded into the integrated container with a frozen compound;
exposing, by microwave emitters, the frozen compound of the first chamber of one of the plurality of lower halves of the plurality of integrated packages loaded into the integrated container to microwave radiation to lyophilize the frozen compound into a lyophilized compound;
filing, by a reconstitution solution dispenser, a second chamber of one of the plurality of lower halves of the plurality of integrated packages loaded into the integrated container with a reconstitution solution;
removing, by the conveyor belt, the integrated container out of the vacuum chamber; and
sealing, by a container sealer, a plurality of upper halves of the integrated packages loaded into the integrated container onto the plurality of lower halves of the integrated packages loaded into the integrated container to create a plurality of prefilled integrated packages.
18 . The large-container continuous microwave vacuum-drying method of claim 17 , wherein the method is operated in a continuous mode.
19 . The large-container continuous microwave vacuum-drying method of claim 17 , wherein the vacuum chamber comprises a series of air-lock doors configured to maintain a low-pressure gradient within an inner volume of the vacuum chamber.
20 . The large-container continuous microwave vacuum-drying method of claim 17 , wherein the frozen compound comprises a vaccine.