Transfusion device

Details Transfusion device Transfusion device

1993-12-13

1996-04-09

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

A61M 520

Patent

active

055056962

ABSTRACT:
A transfusion device in which a transfusion tube is squeezed by a transfusion pump mechanism so as to feed transfusion solution in the transfusion tube through pressurization, comprising: a first member for setting size of air bubbles to be detected in the transfusion solution, which includes a bubble sensor; a second member for setting a transfusion rate and a transfusion quantity of the transfusion solution; a third member for calculating a pressurization feed rate of the transfusion solution on the basis of the transfusion rate and a cross-sectional area of the transfusion tube; a fourth member for calculating a permissible quantity of the air bubbles mixed into a unit volume of the transfusion solution on the basis of the size of the air bubbles and the transfusion rate; a fifth member for calculating an integrated value of the air bubbles per unit volume of the transfusion solution on the basis of the pressurization feed rate of the transfusion solution and output level of the bubble sensor; a sixth member for judging whether or not the integrated value of the air bubbles per unit volume of the transfusion solution exceeds the permissible quantity of the air bubbles mixed into the unit volume of the transfusion solution; and a seventh member for stopping, when the sixth member has formed an affirmative judgement, the transfusion pump mechanism.

REFERENCES:
patent: 5328460 (1994-07-01), Lord et al.

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