Method for measuring ventricular pressure using a pressure sensing valve
First Claim
1. A method for measuring ventricular pressure, comprising:
- positioning a distal end of a ventricular catheter within a patient'"'"'s ventricle;
coupling a proximal end of the ventricular catheter to a valve inlet formed on an implantable valve having a valve assembly and a pressure sensor disposed therein, and coupling a valve outlet formed on the valve to a drainage catheter such that fluid flows from the ventricle through the implantable valve to the drainage catheter, wherein a rate of fluid flowing through the valve is controlled by the valve assembly disposed within the implantable valve; and
obtaining a pressure measurement of the fluid flowing through the valve using the pressure sensor disposed within the valve, wherein the pressure sensor is located upstream of the valve assembly within the valve and thus the pressure measurement is made prior to the fluid flowing into the valve assembly.
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Accused Products
Abstract
A pressure sensing catheter having a pressure sensor and an antenna that is coupled to the pressure sensor, e.g., by a connector, are provided. The pressure sensor can be adapted to measure a pressure surrounding the catheter, and the antenna can be adapted to telemetrically communicate the measured pressure to an external device. In an exemplary embodiment, the antenna, pressure sensor, and/or connector are hermetically sealed, e.g., by the catheter and/or a coating, to prevent the antenna, pressure sensor, and connector from coming into contact with fluid, thereby allowing the catheter to be permanently implanted or otherwise used for long term use. Exemplary methods for manufacturing and using pressure sensing catheters are also provided.
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Citations
10 Claims
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1. A method for measuring ventricular pressure, comprising:
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positioning a distal end of a ventricular catheter within a patient'"'"'s ventricle; coupling a proximal end of the ventricular catheter to a valve inlet formed on an implantable valve having a valve assembly and a pressure sensor disposed therein, and coupling a valve outlet formed on the valve to a drainage catheter such that fluid flows from the ventricle through the implantable valve to the drainage catheter, wherein a rate of fluid flowing through the valve is controlled by the valve assembly disposed within the implantable valve; and obtaining a pressure measurement of the fluid flowing through the valve using the pressure sensor disposed within the valve, wherein the pressure sensor is located upstream of the valve assembly within the valve and thus the pressure measurement is made prior to the fluid flowing into the valve assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for measuring ventricular pressure, comprising:
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implanting an implantable valve beneath a patient'"'"'s scalp, the implantable valve having a pressure sensor assembly disposed therein for sensing pressure of a flow of fluid passing therethrough, and a valve assembly disposed therein for regulating the flow of fluid through the implantable valve, the pressure sensor assembly being distal of the valve assembly; positioning a distal end of a ventricular catheter coupled to an outlet of the valve in a patient'"'"'s ventricle; coupling a valve outlet formed on the implantable valve to a drainage catheter such that fluid flows from the ventricle, through the pressure sensor assembly of the implantable valve, through the valve assembly of the implantable valve, and to the drainage catheter; and positioning an external device adjacent to the patient'"'"'s scalp to telemetrically communicate with an antenna disposed within the implantable valve and thereby obtain a reading of a pressure of fluid flowing through the implantable valve and measured by a pressure sensor disposed within the pressure sensor assembly and coupled to the antenna. - View Dependent Claims (10)
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Specification