Disposable blood pressure transducer and monitor interface
First Claim
1. A medical fluid pressure sensing system, comprising:
- a pressure transducing device, comprising;
a. a pressure-sensitive transducer capable of externally measuring fluid pressures and converting those pressures into electrical signals;
b. an identifier which characterizes the pressure transducing device; and
a signal receiving device adapted to communicate with the pressure transducing device and receive the electrical signals and being capable of sensing the identifier and therefore the characteristics of the pressure transducing device when placed in communication therewith.
1 Assignment
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Accused Products
Abstract
A medical blood pressure transducer that provides an identifier to a monitor that conveys characteristics of the transducer. The monitor can use the information to decide whether to function, or in calibration of the system. The transducer may be part of a disposable blood pressure monitoring system, and may include two transducers closely-spaced to provide two separate but identical outputs. In this way, the transducer may be connected to both a patient monitor and a cardiac output monitor at the same time measurements from a single line can be simultaneously supplied to two separate monitoring devices (for example a patient monitor and a cardiac output monitor). The identifier for the transducer may be circuitry, specifically a resistance/capacitance (RC) combination that possesses a characteristic time constant.
68 Citations
43 Claims
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1. A medical fluid pressure sensing system, comprising:
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a pressure transducing device, comprising;
a. a pressure-sensitive transducer capable of externally measuring fluid pressures and converting those pressures into electrical signals;
b. an identifier which characterizes the pressure transducing device; and
a signal receiving device adapted to communicate with the pressure transducing device and receive the electrical signals and being capable of sensing the identifier and therefore the characteristics of the pressure transducing device when placed in communication therewith. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A medical fluid pressure transducing device, comprising:
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a housing having a conduit in which fluid may enter;
a pressure-sensitive transducer mounted in the housing for measuring fluid pressures in the conduit and converting those pressures into electrical signals; and
an electrical identifier that characterizes the type of fluid pressure transducing device. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A dual fluid pressure transducing device, comprising:
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an external housing adapted to connect to an in-dwelling catheter, the housing having a conduit in which fluid may enter, the fluid therefore being placed in communication with a lumen of the in-dwelling catheter;
two pressure sensors mounted in the housing for measuring fluid pressures in the conduit and converting those pressures into electrical signals; and
an electrical connector connected to each pressure transducer for transmitting the signals. - View Dependent Claims (25, 26, 27, 28, 29)
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30. A method of measuring fluid pressure from a location within a patient, comprising:
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inserting a catheter into a body vessel or cavity;
providing an external housing connected to the catheter having a conduit in which fluid may enter, the fluid therefore being placed in communication with a lumen of the catheter, the housing having at least one fluid pressure sensor mounted therein for measuring fluid pressures in the conduit and converting those pressures into electrical signals; and
transmitting signals representing two measurements of fluid pressure from the at least one fluid pressure sensor to at least one signal receiving monitor. - View Dependent Claims (31, 32, 33, 34, 35)
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36. A method of measuring fluid pressure from a location within a patient, comprising:
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providing a pressure-sensitive transducer capable of externally measuring fluid pressures and converting those pressures into electrical signals, and having an identifier associated therewith that characterizes the pressure-sensitive transducer;
providing a signal receiving device adapted to communicate with the pressure-sensitive transducer and receive the electrical signals and being capable of sensing the identifier and therefore the characteristics of the pressure-sensitive transducer when placed in communication therewith;
placing the pressure-sensitive transducer in fluid pressure communication with a patient fluid;
placing the signal receiving device in communication with the pressure-sensitive transducer; and
sensing the characteristics of the pressure-sensitive transducer via the identifier and consequently adjusting a reception configuration of the signal receiving device. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43)
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Specification