System and method for locating medical devices in vivo using ultrasound Doppler mode
First Claim
1. A system for locating a medical device in vivo, the system comprising:
- an ultrasound scanner having a scan head and being configured to operate in a 3D Doppler mode;
an elongated medical device having a distal end configured to be inserted in vivo, wherein the distal end comprises at least one cross-sectional segment having a different density as compared to adjacent cross-sectional segments; and
a first piezoelectric vibratory element coupled to the medical device configured to induce vibrations in the distal end, wherein the distal end vibrates at a different frequency than the adjacent cross-sectional segments of different density,wherein when the scan head is positioned over the distal end inserted in vivo to obtain scan data of a tissue volume, the ultrasound scanner is configured to generate 3D Doppler data in the form of a plurality of slices from the scan data and to identify a location of the distal end within the slices based upon localized data within one of the slices meeting predetermined criteria.
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Abstract
A system for locating a medical device in vivo includes an ultrasound scanner having a scan head and being capable of operating in a 3D Doppler mode, a medical device having a distal end configured to be inserted in vivo, and a vibratory element coupled to the medical device to induce vibrations in the first distal end. When the scan head is positioned over the distal end inserted in vivo to obtain scan data of the tissue volume, the ultrasound scanner is configured to generate 3D Doppler data in the form of a plurality of slices from the scan data and to identify a location of the distal end within the slices based upon localized data within one of the slices meeting predetermined criteria.
85 Citations
18 Claims
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1. A system for locating a medical device in vivo, the system comprising:
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an ultrasound scanner having a scan head and being configured to operate in a 3D Doppler mode; an elongated medical device having a distal end configured to be inserted in vivo, wherein the distal end comprises at least one cross-sectional segment having a different density as compared to adjacent cross-sectional segments; and a first piezoelectric vibratory element coupled to the medical device configured to induce vibrations in the distal end, wherein the distal end vibrates at a different frequency than the adjacent cross-sectional segments of different density, wherein when the scan head is positioned over the distal end inserted in vivo to obtain scan data of a tissue volume, the ultrasound scanner is configured to generate 3D Doppler data in the form of a plurality of slices from the scan data and to identify a location of the distal end within the slices based upon localized data within one of the slices meeting predetermined criteria. - View Dependent Claims (2, 3, 4, 5)
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6. A method for locating a medical device in vivo, the method comprising:
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inserting a first distal end of a first elongated medical device in vivo, the first elongated medical device having a first piezoelectric vibratory element coupled proximate the first distal end to induce vibrations in the first distal end; inserting a medial section of the first elongated medical device in vivo, wherein a second piezoelectric vibratory element is coupled to the medial section to induce vibrations in the medial section; positioning a scan head of an ultrasound scanner over the first distal end and medial section placed in vivo to obtain scan data of a tissue volume; generating with the ultrasound scanner 3D Doppler data in the form of a plurality of slices from the scan data; and identifying locations of the first distal end and medial section within the slices based upon localized data within one of the slices meeting predetermined criteria. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A system for locating a medical device in vivo, the system comprising:
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an ultrasound scanner having a scan head and being configured to operate in a 3D Doppler mode; a first elongated medical device having a distal end configured to be inserted in vivo; and a first piezoelectric vibratory element coupled to the first medical device proximate the distal end configured to induce vibrations in the distal end, wherein the first piezoelectric vibratory element comprises a power source and radio frequency (RF) receiver to enable activation and deactivation and is configured to be controlled remotely, wherein when the scan head is positioned over the distal end inserted in vivo to obtain scan data of a tissue volume, the ultrasound scanner is configured to generate 3D Doppler data in the form of a plurality of slices from the scan data and to identify a location of the distal end within the slices based upon localized data within one of the slices meeting predetermined criteria; and
wherein the distal end of the first elongated medical device comprises at least one cross-sectional segment having a different density as compared to adjacent cross-sectional segments, such that the distal end vibrates at a different frequency than the adjacent cross-sectional segments of different density. - View Dependent Claims (15, 16, 17, 18)
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Specification