Blood flow detection device
First Claim
1. A blood flow meter system comprising:
- a. a transducer means;
b. a tray means;
c. first electrical terminal means mounted in said tray means;
d. magnetic field generating means mounted in said transducer means for generating a magnetic field;
e. said magnetic field generating means including an electromagnet means mounted in said transducer means with poles of said electromagnetic means terminating at opposite sides of an opening in said transducer means;
f. said tray means adapted to move into engagement with said transducer means in said opening to position said first electrical terminals means generally between the poles of said electromagnetic means;
g. means for activating said generating means to generate a magnetic field between the poles of said electromagnetic means;
h. a disposable sensor means constructed of nonmagnetic and non-conductive material having a constricted section of lumen adapted to accommodate blood flow;
i. second electrical terminal means mounted in said sensor means perpendicular to the flow of blood through said sensor means and in communication with said constricted section of lumen;
j. said sensor means positioned in said tray means with said second terminal means in electrical contact with said first electrical means;
k. a first electromagnetic field focus means positioned within the electromagnetic field between the poles of said electromagnetic means and in alignment with the constricted section of lumen of said sensor means to focus said electromagnetic field perpendicular to said blood flow in said constricted section of lumen of said sensor means to amplify the electromagnetic field intensity; and
l. detection means connected to said second terminals for detecting the voltage induced by said flow of blood through said electromagnetic field.
1 Assignment
0 Petitions
Accused Products
Abstract
A blood flow monitoring system employing a disposable sensor for directing a flow of blood through an electromagnetic field to generate a voltage proportional to the flow of blood through the electromagnetic field. The flow detection system employs a disposable sensor having a lumen with a constricted cross-sectional area adapted to interact with an electromagnetic field to detect blood flow and in an enhanced variation includes an electromagnetic field focusing device for enhancing the electromagnetic field to focus the electromagnetic field across the path of blood flow through the constricted section of the lumen to intensify the voltage generated by the blood flow through the intensified electromagnetic field.
-
Citations
35 Claims
-
1. A blood flow meter system comprising:
-
a. a transducer means; b. a tray means; c. first electrical terminal means mounted in said tray means; d. magnetic field generating means mounted in said transducer means for generating a magnetic field; e. said magnetic field generating means including an electromagnet means mounted in said transducer means with poles of said electromagnetic means terminating at opposite sides of an opening in said transducer means; f. said tray means adapted to move into engagement with said transducer means in said opening to position said first electrical terminals means generally between the poles of said electromagnetic means; g. means for activating said generating means to generate a magnetic field between the poles of said electromagnetic means; h. a disposable sensor means constructed of nonmagnetic and non-conductive material having a constricted section of lumen adapted to accommodate blood flow; i. second electrical terminal means mounted in said sensor means perpendicular to the flow of blood through said sensor means and in communication with said constricted section of lumen; j. said sensor means positioned in said tray means with said second terminal means in electrical contact with said first electrical means; k. a first electromagnetic field focus means positioned within the electromagnetic field between the poles of said electromagnetic means and in alignment with the constricted section of lumen of said sensor means to focus said electromagnetic field perpendicular to said blood flow in said constricted section of lumen of said sensor means to amplify the electromagnetic field intensity; and l. detection means connected to said second terminals for detecting the voltage induced by said flow of blood through said electromagnetic field. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
4. A system in accordance with claim in which said first electromagnetic focus means is mounted on said transducer.
- 21. A disposable blood flow sensor for a magnetic blood flow system employing a magnetic field between a pair of magnetic poles which comprises a body portion constructed of non-magnetic and non-conductive material, said body portion having a lumen extending along a longitudinal axis of said body portion from an input section to an output section to direct blood through said body portion, said lumen having a constricted section intermediate said input section and output an electromagnetic field focus means associated with said body portion and in alignment with the constricted section of lumen, said sensor being positioned between said magnetic poles with said constricted section of said lumen intersecting said magnetic field and a pair of electrical terminal means mounted in said body portion and communicating with said constricted section of said lumen to detect an electromotive force generated by the flow of blood in said lumen through said magnetic field.
Specification