Transurethral ultrasound prostate detection method, diagnostic apparatus and transducer

A technology of ultrasonic transducer and ultrasonic diagnostic instrument, which is applied in the directions of ultrasonic/sonic/infrasonic diagnosis, acoustic diagnosis, infrasonic diagnosis, etc. It can solve the problems affecting the accuracy of clinical detection and low resolution, shorten the detection distance, improve Resolution, clinical detection and accurate effect

Inactive Publication Date: 2015-12-23
上海爱声生物医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The resolution of existing medical ultrasonic detection is relatively low, which may affect the accuracy of

Method used

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  • Transurethral ultrasound prostate detection method, diagnostic apparatus and transducer
  • Transurethral ultrasound prostate detection method, diagnostic apparatus and transducer
  • Transurethral ultrasound prostate detection method, diagnostic apparatus and transducer

Examples

Experimental program
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Embodiment 1

[0073] Example 1: Intraprostatic Ultrasound Transducer Using Single Beam Technology

[0074] combine figure 1 , this embodiment describes in detail the intra-prostatic ultrasound transducer using single-beam technology, which includes an ultrasound transducer unit composed of a backing layer 111 , a piezoelectric layer 112 and an acoustic matching layer 113 that are closely connected in sequence. Correspondingly, the ultrasonic catheter driving its movement drives its 360-degree rotation.

[0075] In different embodiments, the intra-prostate ultrasonic transducer can also be a cylindrical array ultrasonic transducer, which includes a plurality of ultrasonic transducer units distributed along the cylindrical surface 360 ​​degrees, such as figure 2 shown. Correspondingly, the moving ultrasonic catheter only needs to be driven to move back and forth, and does not need to be rotated.

[0076] The intra-prostate ultrasonic transducer of this embodiment can enter the prostate t...

Embodiment 2

[0078] Example 2: Ultrasound Focusing Transducer in the Prostate Using Whole Acoustic Structure Focusing Technology

[0079] Such as Figure 4 Shown is a schematic diagram of the intra-prostatic ultrasound focusing transducer of this embodiment, which includes a backing layer 111, a piezoelectric layer 112 and an acoustic matching layer 113 that are closely connected in sequence, wherein: the backing layer 111, the piezoelectric layer 112 and The acoustic matching layers 113 all have mechanical curved surfaces, and the radii of curvature of the three can be calculated and set according to the requirements of the focused sound field. The focus factor K is defined as the ratio of the focal length f to the transducer aperture d, ie: K=f / d. Given the focus factor K and the focal length f, the size of the aperture d can be calculated.

Embodiment 3

[0080] Example 3: Ultrasound Focusing Transducer Using Acoustic Lens Focusing Technology in Prostate

[0081] Such as Figure 5 Shown is a schematic diagram of the intra-prostatic ultrasound focusing transducer of this embodiment, which includes a backing layer 111, a piezoelectric layer 112, an acoustic matching layer 113, and an acoustic lens 114 closely connected in sequence, wherein the acoustic lens 114 has a mechanically curved surface , its radius of curvature can be calculated and set according to the requirements of the focused sound field.

[0082] The acoustic lens 114 can be a plano-convex lens or a plano-concave lens, which is determined according to the sound velocity of the lens material. For lens materials whose sound velocity is lower than that of the medium, it is a plano-convex lens, such as Figure 6 Shown by the dotted line in the middle; for the lens material whose sound velocity is higher than the sound velocity of the medium, it is a plano-concave len...

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Abstract

The invention discloses a transurethral ultrasound prostate detection method, a diagnostic apparatus and a transducer; the method comprises steps of transmitting an intra-prostate ultrasound transducer which is 10-100MHz in central frequency to a to-be-detected prostate part by virtue of an ultrasound catheter which is 0.5-5mm in diameter through urethra; transmitting and receiving ultrasound signals within 360 degrees to the to-be-detected prostate part; and meanwhile, retracting the intra-prostate ultrasound transducer. The diagnosis apparatus comprises an ultrasound catheter which is 0.5-5mm in diameter, wherein the front end of the ultrasound catheter is provided with an intra-prostate ultrasound transducer which is 10-100MHz in central frequency and the back end is connected to a retracting/driving device; and the retracting/driving device is connected to an electronic imaging system. The transducer comprises an ultrasound transduction unit which is formed by closely connecting a backing layer, a piezoelectric layer and an acoustic matching layer sequentially. According to the invention, the ultrasound transducer is transmitted to the prostate part through urethra, a detection range is shortened and a working frequency is improved, so that an imaging resolution ratio is increased.

Description

technical field [0001] The invention relates to a prostate diagnostic instrument, in particular to a transurethral prostate ultrasonic detection method, a diagnostic instrument and a transducer. Background technique [0002] The prostate is located below the bladder and surrounds the initial part of the urethra, with a maximum transverse diameter of about 4 cm, an anteroposterior diameter of 2 cm, and a superior and inferior diameter of 3 to 4 cm; the diameter of the urethra is about 5 mm. Restricted by the diameter of the urethra, the ultrasound diagnostic methods of the prostate currently used in hospitals usually include transabdominal scanning, transrectal, and transperineal. These approaches are blocked by other thicker human tissues. At present, the closest and most frequent ultrasonography method to the prostate is transrectal examination, such as Figure 12 As shown, the transrectal ultrasonic probe 7 enters the prostate 5 through the rectum 6, and the ultrasonic wa...

Claims

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Application Information

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IPC IPC(8): A61B8/12A61B8/00
Inventor 袁建人曹培杰黄海涛
Owner 上海爱声生物医疗科技有限公司
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