Needle biopsy method based on photoacoustic imaging technique
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of puncture biopsy and photoacoustic imaging, which is applied in the fields of biomedicine, medical imaging and medical devices, and can solve the problems of blurred needle tip imaging, patient pain and injury, and doctor's misjudgment.
Inactive Publication Date: 2013-11-20
NANJING UNIV
View PDF6 Cites 6 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, the puncture biopsy technology using ultrasound imaging often causes doctors to make mistakes in judgment...
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] The present invention proposes a puncture biopsy method based on photoacoustic imaging technology. In this method, the image of the target tissue is obtained first by other imaging technologies, and then the laser is injected into the optical fiber embedded in the wall of the needle point for imaging, and the needle point is moved according to the imaging result.
[0030] Such as figure 1 As shown, the invention discloses a puncture biopsy needle based on photoacoustic imaging technology, which includes a needle point wall (001), a laser filter membrane (002), an incident optical fiber (003), and a laser absorption layer (004).
[0031] One side of the gap in the needle point wall (001) ( figure 1 The middle right side) is slotted, the laser incident optical fiber is embedded in the slot, the needle tip is used to puncture biological tissue, and the inside of the needle tip wall can be used to obtain target tissue samples or inject drugs for treatment;
[0032] The las...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention discloses a biopsy needle based on a photoacoustic imaging technique, which comprises a needle tip wall, a laser filter membrane, incident optical fibers and laser absorption layers. The invention further provides a needle biopsy method which comprises the following steps that a target tissue image is acquired in real time by other imaging techniques; the biopsy needle is aligned with a target tissue and needled; laser is emitted into the incident optical fibers; a photoacoustic signal is acquired by an ultrasonic transducer; an imaging result of a tissue nearby the laser filter membrane at the needle tip and luminous spots at the laser absorption layers and the laser filter membrane are obtained by photoacoustic reconstruction; by combining with the other imaging techniques, the target tissue imaging result and a photoacoustic imaging result of the tissue nearby the needle tip are displayed alternately; an accurate position of the needle tip is supposed by using the luminous spots at the laser absorption layers and the laser filter membrane; and when the needle tip is accurately moved to a designated position, a target tissue sample is acquired or a drug is injected for treatment. The method can accurately acquire the position of the needle tip, reduces the needling difficulty greatly, relieves a pain of a patient, and is convenient to use and outstanding in effect.
Description
technical field [0001] The invention relates to the field of biomedicine, especially the field of medical imaging and medical equipment. Background technique [0002] Since the development of ultrasound imaging, it has become one of the four modern medical imaging diagnostic technologies alongside X-CT, MRI, and PET. Compared with other medical imaging methods, it has the unique advantages of simple operation, low cost, no harm, and no trauma. It is widely used in many departments such as cardiology, obstetrics, ophthalmology, liver, kidney, gallbladder and vascular system. It has an irreplaceable role in obstetrics and gynecology. [0003] Due to its unique significance in medical diagnosis, needle biopsy technology has been widely used in pyramidal tumors and unknown tumors in various organs such as kidney, liver, lung, breast, thyroid, prostate, pancreas, testis, uterus, ovary, and body surface. biopsy, drug treatment, etc. However, the puncture biopsy technology using...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more