US 10,376,280 B2
Inverted bowl shaped ultrasound probe structure of guiding the puncture needle
Yin Chang, Taipei (TW); and Ching-Hsin Chen, Miaoli County (TW)
Assigned to National Health Research Institutes, Miaoli County (TW); and National Yang-Ming University, Taipei (TW)
Filed by National Yang-Ming University, Taipei (TW); and National Health Research Institutes, Miaoli County (TW)
Filed on Mar. 5, 2014, as Appl. No. 14/197,942.
Claims priority of application No. 102108012 A (TW), filed on Mar. 7, 2013.
Prior Publication US 2014/0257110 A1, Sep. 11, 2014
Int. Cl. A61B 8/00 (2006.01); A61B 8/08 (2006.01); A61B 17/34 (2006.01)
CPC A61B 17/3403 (2013.01) [A61B 8/0841 (2013.01); A61B 8/4444 (2013.01); A61B 8/4494 (2013.01); A61B 8/4488 (2013.01); A61B 2017/3413 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An ultrasound probe structure, comprising:
an ultrasound probe housing, configured to have a hollow passage in a center thereof, wherein the hollow passage is allocated disposed with a central line aligned along with a central line of the ultrasound probe housing and configured for a puncture needle configured to be placed inside and pass through coaxially;
a plurality of transducers, arranged within the ultrasound probe housing and surrounding the hollow passage, the plurality of transducers configured to have at least two different aperture diameters and operation frequencies,
wherein each of the transducers is configured as a spherical inverted bowl shape, or an inverted curved ring shape, with a respective radius of curvature configured to have its center of curvature located at a respective point on the central line of the ultrasound probe housing, the plurality of transducers configured to have at least two different radii of curvature;
wherein the aperture diameter, the radius of curvature, and the operation frequency of each of the transducers are designed or adjusted wherein each of the transducers is configured to have a respective focal zone centered at the center of curvature and configured to have a focal length along the central line of the hollow passage and a focal width across the central line of the hollow passage;
wherein the focal zones of the plurality of transducers in combination form an overall detection range for the ultrasound probe structure, wherein the overall detection range is configured to be longer and covers a larger space than the focal zone of any of the transducers, and the puncture needle configured to be guided, by at least one of the transducers at any time as it passes through the hollow passage, for an overall depth corresponding to the overall detection range; and
wherein the focal width of the focal zone of each of the transducers is adjusted by the f number and the operation frequency, wherein the f number is defined as ri/2ai, r, is the radius of curvature of the transducer, and 2ai, is the aperture diameter of the transducer.