US 12,420,012 B2
Infusion set
Masahito Urano, Yokohama (JP); and Seiji Yonezawa, Tokyo (JP)
Assigned to COMETS INC., Tokyo (JP)
Filed by COMETS INC., Tokyo (JP)
Filed on Oct. 4, 2022, as Appl. No. 17/937,993.
Application 17/937,993 is a division of application No. 16/900,792, filed on Jun. 12, 2020, granted, now 11,701,466.
Claims priority of application No. 2020-004576 (JP), filed on Jan. 15, 2020.
Prior Publication US 2023/0027948 A1, Jan. 26, 2023
Int. Cl. A61M 5/168 (2006.01); A61M 5/14 (2006.01); A61M 39/28 (2006.01)
CPC A61M 5/16813 (2013.01) [A61M 5/1411 (2013.01); A61M 5/16827 (2013.01); A61M 39/28 (2013.01); A61M 5/1407 (2013.01)] 5 Claims
OG exemplary drawing
 
1. An infusion method using an infusion set, wherein the infusion set includes:
a drip chamber;
a first upstream tube which connects a blood bag and an inlet of the drip chamber;
a second upstream tube which connects a saline bag and the inlet of the drip chamber;
a tube which is connected to an outlet of the drip chamber;
a clip which is provided in the tube;
an M clamp which is provided between the drip chamber and the clip in the tube;
a first upstream clamp which is provided in the first upstream tube; and
a second upstream clamp which is provided in the second upstream tube,
the infusion method comprising:
a first step of, in a state in which the M clamp and the first upstream clamp are closed, opening the second upstream clamp to supply saline in the saline bag through the second upstream tube to the drip chamber while preventing the saline in the drip chamber from flowing into the tube by the closed M clamp;
a second step of, in a state in which the M clamp and the second upstream clamp are closed, opening the first upstream clamp to supply blood in the blood bag through the first upstream tube to the drip chamber and produce diluted blood with the saline in the drip chamber while preventing the diluted blood in the drip chamber from flowing into the tube by the closed M clamp; and
a third step of, in a state in which the second upstream clamp is closed, opening the M clamp, the first upstream clamp and the clip to supply the diluted blood in the drip chamber through the tube to a tip end of the tube and thereby remove a gas in the tube.