Intravascular filter monitoring
First Claim
Patent Images
1. An apparatus for monitoring blood flow through an intravascular device, comprising:
- an elongated member having a proximal end and a distal end;
an intravascular device coupled to said elongated tubular member proximal the distal end thereof;
a first sensor adapted to measure a blood flow characteristic proximally of the intravascular device; and
a second sensor adapted to measure a blood flow characteristic distally of the intravascular device.
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Abstract
Devices and methods for monitoring the flow of blood through an intravascular device are disclosed. An apparatus for monitoring blood flow in accordance with an exemplary embodiment of the present invention includes an intravascular device coupled to an elongated member, a first sensor adapted to measure fluidic pressure proximal the intravascular device, a second sensor adapted to measure fluidic pressure distal the intravascular device, and a control unit for comparing the signals received from the first and second sensors to determine the pressure drop across the intravascular device.
92 Citations
39 Claims
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1. An apparatus for monitoring blood flow through an intravascular device, comprising:
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an elongated member having a proximal end and a distal end;
an intravascular device coupled to said elongated tubular member proximal the distal end thereof;
a first sensor adapted to measure a blood flow characteristic proximally of the intravascular device; and
a second sensor adapted to measure a blood flow characteristic distally of the intravascular device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for monitoring blood flow through an embolic protection filter, comprising:
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an elongated tubular member having a proximal end and a distal end;
an embolic protection filter coupled to the elongated tubular member proximal the distal end thereof;
a first sensor coupled to the elongated tubular member, said first sensor adapted to measure blood flow or pressure proximal the embolic protection filter;
a second sensor coupled to the elongated tubular member, said second sensor adapted to measure blood flow or pressure distal the embolic protection filter; and
a control unit for monitoring the signals received from the first and second sensors, said control unit including a comparator circuit for determining the pressure drop through the embolic protection filter. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of monitoring blood flow through an embolic protection filter comprising the steps of:
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providing an apparatus for monitoring blood flow through an embolic protection filter, the apparatus comprising;
an elongated tubular member having a proximal end and a distal end;
an embolic protection filter coupled to the elongated tubular member proximal the distal end thereof;
a first sensor adapted to measure blood flow or pressure proximal the embolic protection filter;
a second sensor adapted to measure blood flow or pressure distal the embolic protection filter; and
a control unit;
inserting the elongated tubular member into a body lumen such that the embolic protection filter is disposed distal a lesion; and
monitoring the pressure drop through the embolic protection filter. - View Dependent Claims (32, 33, 34)
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35. A method of monitoring blood flow through an embolic protection filter comprising the steps of:
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providing an apparatus for monitoring blood flow through an embolic protection filter, the apparatus comprising;
an elongated tubular member having a proximal end and a distal end;
an embolic protection filter coupled to the elongated tubular member proximal the distal end thereof;
a first sensor adapted to measure blood flow or pressure proximal the embolic protection filter, the first sensor including a first transducer;
a second sensor adapted to measure blood flow or pressure distal the embolic protection filter, the second sensor including a second transducer; and
a control unit;
inserting the elongated tubular member into a body lumen such that that the embolic protection filter is disposed distal a lesion;
receiving a first signal from the first transducer;
receiving a second signal from the second transducer; and
comparing the difference between the first and second signals to obtain a differential value. - View Dependent Claims (36, 37, 38, 39)
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Specification