Remote pressure sensing system and method thereof
First Claim
1. A monitoring system for use with a body of a subject, the system comprising:
- a medical device, having a portion thereof configured to be placed inside the subjects body, said portion of the medical device being configured to be propelled by fluid pressure through a body lumen;
at least first and second pressure sensors configured to be accommodated remotely from the subjects body at two different spaced-apart positions outside the subjects body and configured and operable to detect pressure at the two spaced-apart remote positions, respectively;
said pressure sensors configured to be in fluid communication with at least one site inside the subject'"'"'s body;
at least one tubular member having a distal end connected to the first pressure sensor and a proximal end connected to the second pressure sensor;
said tubular member being configured and operable as a flow resistor and selected to have a first characteristic resistance to fluid flow;
first and second pressure sensors measuring a pressure gradient across the tubular member;
a distal flow path extending between the tubular member and the medical device and exhibiting a second characteristic resistance to fluid flow; and
a control unit for monitoring and regulating fluid pressure at said at least one site, said control unit utilizing a model based upon a ratio between the first characteristic resistance and the second characteristic resistance to generate an output indicative of the pressure at the at least one site.
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Accused Products
Abstract
The present invention relates to a monitoring system and method for use with a body of a subject. The system comprises a medical device, having a portion thereof configured to be placed inside the subject'"'"'s body, said portion of the medical device being configured to be propelled by fluid pressure through a body lumen; at least two pressure sensors accommodated remotely from the subject'"'"'s body at two different spaced-apart positions outside the subject'"'"'s body and configured and operable to detect pressure at the two spaced-apart remote positions; said at least two pressure sensors being in fluid communication with at least one site inside the subject'"'"'s body, a relation between the pressure at said at least one site and the pressures at said two spaced-apart remote positions being thereby indicative of the fluid pressure at said at least one site.
201 Citations
15 Claims
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1. A monitoring system for use with a body of a subject, the system comprising:
- a medical device, having a portion thereof configured to be placed inside the subjects body, said portion of the medical device being configured to be propelled by fluid pressure through a body lumen;
at least first and second pressure sensors configured to be accommodated remotely from the subjects body at two different spaced-apart positions outside the subjects body and configured and operable to detect pressure at the two spaced-apart remote positions, respectively;
said pressure sensors configured to be in fluid communication with at least one site inside the subject'"'"'s body;
at least one tubular member having a distal end connected to the first pressure sensor and a proximal end connected to the second pressure sensor;
said tubular member being configured and operable as a flow resistor and selected to have a first characteristic resistance to fluid flow;
first and second pressure sensors measuring a pressure gradient across the tubular member;
a distal flow path extending between the tubular member and the medical device and exhibiting a second characteristic resistance to fluid flow; and
a control unit for monitoring and regulating fluid pressure at said at least one site, said control unit utilizing a model based upon a ratio between the first characteristic resistance and the second characteristic resistance to generate an output indicative of the pressure at the at least one site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a medical device, having a portion thereof configured to be placed inside the subjects body, said portion of the medical device being configured to be propelled by fluid pressure through a body lumen;
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13. A monitoring system for use with a body of a subject, the system comprising:
- a medical device, comprising at least one inflatable balloon and having a portion thereof configured to be placed inside the subjects body, said portion of the medical device being configured to be propelled by fluid pressure through a body lumen;
at least first and second pressure sensors configured to be accommodated remotely from the subject'"'"'s body at two different spaced-apart positions outside the subjects body and configured and operable to detect pressure at the two spaced-apart remote positions, respectively;
said pressure sensors configured to be in fluid communication with at least one site inside the subjects body;
at least one tubular member having a distal end connected to the first pressure sensor and a proximal end connected to the second pressure sensor;
said tubular member being configured and operable as a flow resistor and selected to have a first characteristic resistance to fluid flow;
first and second pressure sensors measuring a pressure gradient across the tubular member;
a distal flow path extending between the tubular member and the medical device and exhibiting a second characteristic resistance to fluid flow; and
a control unit for monitoring and regulating fluid pressure at said at least one site and within said at least one inflatable balloon;
said control unit being configured and operable to generate an output indicative of a pressure level at the at least one site, utilizing at least one model based upon a ratio between the second characteristic resistance and the first characteristic resistance. - View Dependent Claims (14, 15)
- a medical device, comprising at least one inflatable balloon and having a portion thereof configured to be placed inside the subjects body, said portion of the medical device being configured to be propelled by fluid pressure through a body lumen;
Specification