Intracardiac pressure monitoring method
First Claim
1. A method for telemetrically measuring a parameter in a patient'"'"'s heart, the method comprising the steps of:
- imaging the heart;
identifying an implantation site in the heart;
creating an opening in a tissue at the implantation site;
providing a sensor comprising a housing, a membrane at one end of the housing, the membrane being defonnable in response to the parameter, and a microchip positioned within the housing and operatively communicating with the membrane for transmitting a signal indicative of the parameter, the microchip having an array of photoelectric cells, and a light emitting diode operatively connected to the microchip and spaced away from the array of photoelectric cells, and a shutter fixed to the membrane and movably extendable over the array of photoelectric cells, the shutter being movable in association with the membrane;
placing the sensor in the opening; and
telemetrically measuring the parameter from outside of the patient'"'"'s body based on the transmitted signal emitted by the sensor.
1 Assignment
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Accused Products
Abstract
A method for telemetrically measuring a parameter in a patient'"'"'s heart comprises the steps of imaging the heart and identifying an implantation site in the heart. An opening is created in the tissue at the implantation site. A sensor comprising a housing, a membrane at one end of the housing wherein the membrane is deformable in response to the parameter, and a microchip positioned within the housing and operatively communicating with the membrane for transmitting a signal indicative of the parameter is provided. The sensor is placed in the opening and the parameter is telemetrically measured from outside of the patient'"'"'s body based on the transmitted signal by the sensor. The sensor is also telemetrically powered from outside of the patient'"'"'s body. A signal charging and reading device is placed outside of the patient'"'"'s body for telemetric powering and signal reading with respect to the sensor. In an alternative embodiment, the sensor has a tapered distal end and a tissue piercing tip for direct implantation into tissue. Alternative embodiments of this sensor include helical threads on the tapered distal end for threading the sensor into tissue and a plurality of tissue barbs for direct and firm anchoring of the sensor in tissue.
144 Citations
40 Claims
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1. A method for telemetrically measuring a parameter in a patient'"'"'s heart, the method comprising the steps of:
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imaging the heart;
identifying an implantation site in the heart;
creating an opening in a tissue at the implantation site;
providing a sensor comprising a housing, a membrane at one end of the housing, the membrane being defonnable in response to the parameter, and a microchip positioned within the housing and operatively communicating with the membrane for transmitting a signal indicative of the parameter, the microchip having an array of photoelectric cells, and a light emitting diode operatively connected to the microchip and spaced away from the array of photoelectric cells, and a shutter fixed to the membrane and movably extendable over the array of photoelectric cells, the shutter being movable in association with the membrane;
placing the sensor in the opening; and
telemetrically measuring the parameter from outside of the patient'"'"'s body based on the transmitted signal emitted by the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for telemetrically measuring a parameter in a patient'"'"'s heart, the method comprising the steps of:
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imaging the heart;
identifying an implantation site in the heart;
providing a sensor comprising a housing, a membrane at one end of the housing, the membrane being deformable in response to the parameter, and a microchip positioned within the housing and operatively communicating with the membrane for transmitting a signal indicative of the parameter, the microchip having an array of photoelectric cells, and a light emitting diode operatively connected to the microchip and spaced away from the array of photoelectric cells, and a shutter fixed to the membrane and movably extendable over the array of photoelectric cells, the shutter being movable in association with the membrane;
implanting the sensor at the site with a piercing tip and a tapped distal end of the sensor;
telemetrically measuring the parameter from outside of the patient'"'"'s body based on the transmission signal emitted by the sensor. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for telemetrically measuring a parameter in a patient'"'"'s heart, the method comprising the steps of:
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imaging the heart;
identifying an implantation site in the heart;
providing a sensor comprising a housing having a tapered distal end and piercing tip thereon, the tapered distal end having helical threads, a membrane at one end of the housing, the membrane being deformable in response to the parameter, and a microchip positioned within the housing and operatively communicating with the membrane for transmitting a signal indicative of the parameter;
implanting the sensor at the site with the piercing tip and the tapered distal end of the sensor by threading the tapered distal end into tissue at the site;
telemetrically powering the sensor from outside of the patient'"'"'s body and telemetrically measuring the parameter from outside of the patient'"'"'s body based on the transmission signal by the sensor. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification