Sensing Foley catheter
Inventors
BURNETT, Daniel R. • LEE, Greg J. • O'Connor, Richard W. • MENSH, Brett
Assignees
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Publication Number
US-10952659-B2
Publication Date
2021-03-23
Expiration Date
Abstract
Foley type catheter embodiments for sensing physiologic data from a urinary tract of a patient are disclosed. The system includes the catheter and a data processing apparatus and methods for sensing physiologic data from the urinary tract. Embodiments may also include a pressure sensor having a pressure interface at a distal end of the catheter, a pressure transducer at a proximal end, and a fluid column disposed between the pressure interface and transducer. When the distal end is residing in the bladder, the pressure transducer can transduce pressure impinging on it into a chronological pressure profile, which can be processed by the data processing apparatus into one or more distinct physiologic pressure profiles, for example, peritoneal pressure, respiratory rate, and cardiac rate. At a sufficiently high data-sampling rate, these physiologic data may further include relative pulmonary tidal volume, cardiac output, relative cardiac output, and absolute cardiac stroke volume.
Core Innovation
A Foley-type urinary catheter system is disclosed for pressure measurement in a bladder using a catheter having a fluid lumen and a pressure interface disposed on the catheter in communication with a fluid column. The pressure interface transmits pressure through a fluid column to a pressure transducer, generating a chronological pressure profile in the bladder.
The controller receives a pressure signal from the pressure transducer and controls the gas delivery system to transmit pressure to the pressure interface via gas delivery in response to the received pressure signal. The chronological pressure profile is processed into distinct physiologic subprofiles, including peritoneal pressure, respiratory rate, and cardiac rate.
Optical sensing is integrated into the system to detect analytes from a flow of urine through the catheter into a receptacle having an optically clear window. One or more optical sensors sense analytes from the urine within the receptacle, and the controller monitors a rate of the flow. An RFID element provides a unique identifier integrated with the receptacle for identification in communications with the controller.
Claims Coverage
The independent claim is clm-00001. It contains five inventive features combining catheter-based pressure transmission measurement, controller-controlled gas pressure transmission, optical analyte sensing, urine flow monitoring, and RFID identification.
Catheter pressure interface coupled to a pressure-transmitting fluid column
A catheter having a fluid lumen defines the system, with a fluid column having a pressure-transmitting column and a fluid disposed in the catheter and coupled to a gas delivery system, and a pressure interface disposed on the catheter in communication with the fluid column.
Pressure transducer receiving pressure signal via the fluid column
A pressure transducer coupled to the fluid column and configured to receive a pressure signal from the pressure interface via the fluid column.
Controller-controlled gas delivery system responsive to the pressure signal
A controller configured to receive the pressure signal from the pressure transducer and to control the gas delivery system to transmit pressure to the pressure interface via gas delivery in response to receiving the pressure signal.
Optical sensing of analyte from urine with controller detection and flow monitoring
One or more optical sensors in communication with the controller, wherein the controller is configured to detect an analyte via the controller; and a receptacle configured to receive a flow of urine through the fluid lumen and having an optically clear window located on the receptacle through which the one or more optical sensors sense the analyte from the urine received within the receptacle, wherein the controller is further configured to monitor a rate of the flow.
RFID-identified receptacle integrated with urine collection
An RFID element providing a unique identifier integrated with the receptacle and configured for identification of the receptacle in communications with the controller.
Independent claim clm-00001 covers a pressure measurement system that uses a catheter pressure interface coupled to a pressure-transmitting fluid column and pressure transducer, with a controller that drives a gas delivery system in response to the pressure signal, while concurrently performing optical analyte detection from urine through an optically clear receptacle window, monitoring urine flow rate, and using an RFID element for receptacle identification.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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