Endovenous access and guidance system utilizing non-image based ultrasound
First Claim
1. An endovenous access and guidance system, comprising:
- an endovenous catheter;
an elongate flexible member configured to access a venous vasculature of a patient through the endovenous catheter;
a sensor disposed at a distal end of the elongate flexible member, the sensor being configured to provide in vivo non-image based ultrasound information of the venous vasculature of the patient;
a processor configured to;
receive the in vivo non-image based ultrasound information of the venous vasculature of the patient provided by the sensor,determine, based on the in vivo non-image based ultrasound information of the venous vasculature of the patient, a first spectral power of blood flow away from the sensor and a second spectral power of blood flow towards the sensor at a single point in time,compare the first spectral power of blood flow away from the sensor and the second spectral power of blood flow towards the sensor to one or more stored spectral power patterns,determine, based on the comparison of the first spectral power of blood flow away from the sensor and the second spectral power of blood flow towards the sensor to the one or more stored spectral power patterns, that;
blood flow within the venous vasculature of the patient is towards the sensor,blood flow within the venous vasculature of the patient is away from the sensor, andblood flow is indicative of the sensor being in proximity of a predetermined structure within the venous vasculature of the patient; and
enable output of;
a first indication when the processor determines that the blood flow within the venous vasculature of the patient is towards the sensor,a second indication, different from the first indication, when the processor determines that the blood flow within the venous vasculature of the patient is away from the sensor, anda third indication, different from the first indication and the second indication, when the processor determines that the blood flow is indicative of the sensor being in proximity of the predetermined structure within the venous vasculature of the patient.
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Abstract
The invention relates to the guidance, positioning and placement confirmation of intravascular devices, typically inserted percutaneously into the venous or arterial vasculature. An aspect of the invention includes, for example, an endovenous access and guidance system. The system comprises: an elongate flexible member adapted and configured to access the venous vasculature of a patient; a sensor disposed at a distal end of the elongate flexible member and configured to provide in vivo non-image based ultrasound information of the venous vasculature of the patient; a processor configured to receive and process in vivo non-image based ultrasound information of the venous vasculature of the patient provided by the sensor and to provide position information regarding the position of the distal end of the elongate flexible member within the venous vasculature of the patient; and an output device adapted to output the position information from the processor.
189 Citations
50 Claims
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1. An endovenous access and guidance system, comprising:
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an endovenous catheter; an elongate flexible member configured to access a venous vasculature of a patient through the endovenous catheter; a sensor disposed at a distal end of the elongate flexible member, the sensor being configured to provide in vivo non-image based ultrasound information of the venous vasculature of the patient; a processor configured to; receive the in vivo non-image based ultrasound information of the venous vasculature of the patient provided by the sensor, determine, based on the in vivo non-image based ultrasound information of the venous vasculature of the patient, a first spectral power of blood flow away from the sensor and a second spectral power of blood flow towards the sensor at a single point in time, compare the first spectral power of blood flow away from the sensor and the second spectral power of blood flow towards the sensor to one or more stored spectral power patterns, determine, based on the comparison of the first spectral power of blood flow away from the sensor and the second spectral power of blood flow towards the sensor to the one or more stored spectral power patterns, that; blood flow within the venous vasculature of the patient is towards the sensor, blood flow within the venous vasculature of the patient is away from the sensor, and blood flow is indicative of the sensor being in proximity of a predetermined structure within the venous vasculature of the patient; and
enable output of;a first indication when the processor determines that the blood flow within the venous vasculature of the patient is towards the sensor, a second indication, different from the first indication, when the processor determines that the blood flow within the venous vasculature of the patient is away from the sensor, and a third indication, different from the first indication and the second indication, when the processor determines that the blood flow is indicative of the sensor being in proximity of the predetermined structure within the venous vasculature of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 27, 28, 29, 33, 35, 37, 41, 42, 43, 44, 45)
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16. An endovenous access and guidance system, comprising:
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an endovenous catheter; an elongate flexible member configured to access a venous vasculature of a patient through the endovenous catheter; a sensor disposed at a distal end of the elongate flexible member, the sensor being configured to provide in vivo non-image based ultrasound information of the venous vasculature of the patient; a processor configured to; receive the in vivo non-image based ultrasound information of the venous vasculature of the patient provided by the sensor, determine, based on the in vivo non-image based ultrasound information of the venous vasculature of the patient, a first spectral power of blood flow away from the sensor and a second spectral power of blood flow towards the sensor at a single point in time, compare the first spectral power of blood flow away from the sensor and the second spectral power of blood flow towards the sensor to one or more stored spectral power patterns, determine, based on the comparison of the first spectral power of blood flow away from the sensor and the second spectral power of blood flow towards the sensor to the one or more stored spectral power patterns, that; blood flow within the venous vasculature of the patient is towards a heart of the patient, blood flow within the venous vasculature of the patient is away from the heart of the patient, and blood flow is indicative of the sensor being in proximity of a predetermined structure within the heart of the patient; and enable output of; a first indication when the processor determines that the blood flow within the venous vasculature of the patient is towards the heart, a second indication, different from the first indication, when the processor determines that the blood flow within the venous vasculature of the patient is away from the heart, and a third indication, different from the first indication and the second indication, when the processor determines that the blood flow is indicative of the sensor being in proximity of the predetermined structure within the heart of the patient. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 30, 31, 32, 34, 36, 38, 39, 40, 46, 47, 48, 49, 50)
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Specification