Method and device for measuring physical characteristics in a body
First Claim
1. A system for the measurement of a physiological characteristic comprising the following:
- a first electrode adapted to be in electrical contact with body tissue at a first part of a body, wherein said first electrode is connected to a sensor for measuring a physiological characteristic;
a second electrode adapted to be in electrical contact with body tissue at a second part of the body;
an electrical circuit comprising the first electrode, the sensor, and the second electrode, wherein said electrical circuit is completed via body tissue; and
a first electrical wire having a distal end for insertion into body tissue and a proximal end for connection to the electrical circuit;
wherein the sensor is adapted to the distal end of the first electrical wire to allow said sensor to be inserted into body tissue; and
wherein said system is adapted to transfer an electrical signal representing a physiological characteristic through said first and second electrodes via the body tissue.
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Accused Products
Abstract
A guide wire for measuring physiological characteristics inside a body includes a sensor (14) for monitoring the physical variable and for forming an output signal characteristic for the value of the physical variable. The sensor is connected to a first electrical potential of an electronic unit (22) via an electrical wire (11) extending along the guide wire. An internal body electrode (17) is connected to the sensor (14) and is in contact with body fluids surrounding the sensor circuit. The guide wire (10) is inserted into a vessel of the body (25), and a second electrode (21) is applied near the internal body electrode, and the sensor circuit is powered by a second potential of the electronic unit (22) via a part of the body.
116 Citations
22 Claims
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1. A system for the measurement of a physiological characteristic comprising the following:
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a first electrode adapted to be in electrical contact with body tissue at a first part of a body, wherein said first electrode is connected to a sensor for measuring a physiological characteristic;
a second electrode adapted to be in electrical contact with body tissue at a second part of the body;
an electrical circuit comprising the first electrode, the sensor, and the second electrode, wherein said electrical circuit is completed via body tissue; and
a first electrical wire having a distal end for insertion into body tissue and a proximal end for connection to the electrical circuit;
wherein the sensor is adapted to the distal end of the first electrical wire to allow said sensor to be inserted into body tissue; and
wherein said system is adapted to transfer an electrical signal representing a physiological characteristic through said first and second electrodes via the body tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for the measurement of a physiological characteristic comprising the following:
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placing a first electrode in electrical contact with body tissue at a first part of a body, wherein said first electrode is connected to a sensor for measuring a physiological characteristic;
placing a second electrode in electrical contact with body tissue at a second part of the body;
completing, through body tissue, an electrical circuit comprising the first electrode, the sensor, and the second electrode; and
registering a signal from the sensor wherein said signal represents the physiological characteristic;
wherein the step of placing a first electrode further comprises inserting, a first electrical wire into body tissue and connecting a proximal end of the first electrical wire to the electrical circuit and wherein the sensor is adapted to the distal end of the first electrical wire. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for the measurement of a physiological characteristic comprising the following:
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a first electrode adapted to be in electrical contact with body tissue at a first part of a body;
a sensor for measuring a physiological characteristic, wherein said sensor is mounted on a guide wire and connected to said first electrode;
a second electrode adapted to be in electrical contact with body tissue at a second part of the body;
an electrical circuit comprising the first electrode, the sensor, and the second electrode, wherein said electrical circuit is completed via body tissue; and
wherein said system is adapted to transfer an electrical signal representing a physiological characteristic through said first and second electrodes via the body tissue. - View Dependent Claims (22)
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Specification