CN215656207U - Photoacoustic imaging array probe device adopting helmet type shape array arrangement mode - Google Patents
Photoacoustic imaging array probe device adopting helmet type shape array arrangement mode Download PDFInfo
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- CN215656207U CN215656207U CN202121470180.1U CN202121470180U CN215656207U CN 215656207 U CN215656207 U CN 215656207U CN 202121470180 U CN202121470180 U CN 202121470180U CN 215656207 U CN215656207 U CN 215656207U
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Abstract
The utility model discloses a photoacoustic imaging array probe device in a helmet type shape array arrangement mode, which comprises a helmet main body, wherein unit ultrasonic transducers are arranged on the helmet main body in a matrix distribution mode, and optical fibers in signal connection with the unit ultrasonic transducers are arranged on the helmet main body; the unit ultrasonic transducer comprises a shell, an inner bushing is arranged in the shell, a first matching layer, a negative electrode layer, a piezoelectric ceramic layer and a positive electrode layer are sequentially stacked in the inner bushing, a back lining layer is arranged on the inner side of the inner bushing, a connector used for connecting optical fibers is arranged on the unit ultrasonic transducer, the connector is connected with the positive electrode layer through a positive cable, and the connector is connected with the negative electrode layer through a negative cable. The utility model has the advantages that: simple structure, reasonable, promote the signal contact surface through the unit ultrasonic transducer who is the matrix arrangement, promote formation of image scope and formation of image quality.
Description
Technical Field
The utility model relates to the technical field of ultrasonic medical probe manufacturing, in particular to a photoacoustic imaging array probe device in a helmet type shape array arrangement mode.
Background
In the field of medical image diagnosis, ultrasound imaging is a common diagnostic method. The ultrasonic imaging is based on the mechanical property of the detected biological tissue, the imaging contrast is low, and meanwhile, the traditional ultrasonic imaging depends on the acoustic impedance change of the biological tissue, and only interface reflection imaging can be realized, and chromatographic imaging cannot be realized.
While the advantage of optical methods lies in its functionality and sensitivity, currently, the interaction of light with tissue is mainly due to both absorption and scattering: wherein the optical absorption property of the tissue is related to the tissue components, and the component change of the tissue can reflect the change of the biochemical state of the tissue body, so that the biochemical state of the tissue body can be judged according to the optical absorption property; light scattering in biological tissues results from random variations in refractive index at the micrometer scale, while the physiological basis for fluctuations in refractive index at the micrometer scale is the variation of biological tissues from one another at the cellular and subcellular levels, so it is believed that changes in morphology of tissue bodies at the cellular and subcellular levels can be inferred from optical scattering properties. In summary, the optical properties of the tissue volume (scattering and absorption) have the ability to assess the biochemical and morphological state of the focal tissue. In addition, the optical properties are sensitive to the above changes occurring in the tissue, which makes it possible to have high image contrast in optical imaging. Therefore, the characteristics of the functionality and the sensitivity of the optical technology can be utilized to quantitatively evaluate the functions of the tissues.
However, light irradiation of biological tissue exhibits strong scattering properties, typically with a scattering coefficient of about 100cm-1, which makes optical imaging impossible with both resolution and imaging depth.
Unlike light propagating in tissue, which exhibits strong scattering, ultrasound scatters 2-3 orders of magnitude less in tissue than light, meaning that ultrasound imaging techniques can somehow be compatible in terms of resolution and imaging depth. However, the source of the graph contrast of the ultrasonic imaging technology is the difference of biological tissues in mechanical properties, the imaging contrast is low, and the ultrasound depends on the acoustic impedance change of the tissues, can only realize interface reflection imaging, cannot realize tomography, is not suitable for the examination of gas-containing organs (such as lung, digestive tract and bones), and also limits the ultrasonic imaging technology in the aspect of early cancer diagnosis; in addition, ultrasound technology does not have the ability to assess tissue body function.
SUMMERY OF THE UTILITY MODEL
The utility model aims to make up for the defects, and discloses a photoacoustic imaging array probe device which is simple and reasonable in structure and can improve the imaging range and the imaging quality.
The technical scheme of the utility model is realized as follows:
a photoacoustic imaging array probe device adopting a helmet type shape array arrangement mode comprises a helmet main body, wherein unit ultrasonic transducers distributed in a matrix form are arranged on the helmet main body, and an optical fiber capable of continuously transmitting pulse signals is arranged on the helmet main body; the unit ultrasonic transducer comprises a shell, an inner bushing is arranged in the shell, a first matching layer, a negative electrode layer, a piezoelectric ceramic layer and a positive electrode layer are sequentially stacked in the inner bushing, a back lining layer is arranged on the inner side of the inner bushing, a connector used for connecting optical fibers is arranged on the unit ultrasonic transducer, the connector is connected with the positive electrode layer through a positive cable, and the connector is connected with the negative electrode layer through a negative cable.
The measures for further optimizing the technical scheme are as follows:
as a refinement, a second matching layer is arranged between the first matching layer and the negative electrode layer.
As an improvement, the outer surface of the shell is plated with a polymer coating.
As an improvement, the unit ultrasonic transducer is of a cylindrical structure, and the shell comprises a cylinder body and a cover plate arranged at the top of the cylinder body.
As an improvement, the center of the helmet main body is provided with an optical fiber mounting hole, and the optical fiber penetrates out of the optical fiber mounting hole.
As an improvement, the helmet main body is of a hemispherical structure.
Compared with the prior art, the utility model has the advantages that:
the photoacoustic imaging array probe device adopting the helmet type shape array arrangement mode is simple and reasonable in structure, continuous pulse signals are sent out through the optical fibers, the unit ultrasonic transducers arranged in a matrix form on the helmet main body receive reflected signals, and the signal contact surface can be improved by adopting the matrix arrangement; the unit ultrasonic transducer is sequentially stacked in the inner bushing and provided with a first matching layer, a negative electrode layer, a piezoelectric ceramic layer and a positive electrode layer, the inner side of the inner bushing is provided with a back lining layer, ultrasonic waves are concentrated through the arrangement of the inner bushing, the signal intensity is improved, and the imaging range and the imaging quality are improved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a bottom view of the present invention;
fig. 3 is a sectional structural view of the unit ultrasonic transducer in fig. 1.
The names of the reference numbers in the drawings of the utility model are as follows:
the helmet comprises a helmet body 1, an optical fiber mounting hole 1a, a unit ultrasonic transducer 2, a shell 21, a cylinder 21a, a cover plate 21b, an inner lining 22, a first matching layer 23a, a negative electrode layer 23b, a piezoelectric ceramic layer 23c, a positive electrode layer 23d, a second matching layer 23e, a backing layer 24, a connector 25, a positive cable 25a, a negative cable 25b, a polymer coating film 26 and an optical fiber 3.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 to 3, a photoacoustic imaging array probe apparatus with a helmet-type array arrangement comprises a helmet body 1, wherein unit ultrasonic transducers 2 distributed in a matrix are arranged on the helmet body 1, and an optical fiber 3 capable of continuously transmitting pulse signals is arranged on the helmet body 1; the unit ultrasonic transducer 2 comprises a shell 21, an inner bushing 22 is arranged in the shell 21, a first matching layer 23a, a negative electrode layer 23b, a piezoelectric ceramic layer 23c and a positive electrode layer 23d are sequentially stacked in the inner bushing 22, a backing layer 24 is arranged on the inner side of the inner bushing 22, a connector 25 for connecting an optical fiber 3 is arranged on the unit ultrasonic transducer 2, the connector 25 is connected with the positive electrode layer 23d through a positive cable 25a, and the connector 25 is connected with the negative electrode layer 23b through a negative cable 25 b.
A second matching layer 23e is provided between the first matching layer 23a and the negative electrode layer 23 b. The first matching layer 23a is made of a composite material formed by mixing epoxy resin and inorganic powder, the second matching layer 23e is made of a hard ceramic film, and the imaging quality can be further improved by arranging the second matching layer 23 e.
The outer surface of the shell 21 is plated with a polymer coating 26, and the polymer coating 26 can protect the unit ultrasonic transducer 2.
The unit ultrasonic transducer 2 is a cylindrical structure, and the housing 21 includes a cylinder 21a and a cover plate 21b disposed on the top of the cylinder 21 a.
The helmet body 1 is provided with an optical fiber mounting hole 1a at the center, and the optical fiber 3 penetrates out of the optical fiber mounting hole 1 a.
The helmet body 1 is of a hemispherical structure. The helmet main body 1 is formed by processing a high-molecular polyester material so as to achieve the purpose of light weight, and array holes of a matrix are processed through CNC (computer numerical control) in the middle area of the helmet main body 1 according to the design size so as to be used for installing the unit ultrasonic transducers 2.
When the unit ultrasonic transducer 2 is manufactured, the piezoelectric ceramic layer 23c is manufactured by a magnetron sputtering process, and a lower electrode layer (negative electrode layer 23b) is plated on the lower surface of the piezoelectric ceramic layer 23c and an upper electrode layer (positive electrode layer 23d) is plated on the upper surface thereof to manufacture a primary laminate. A lead (negative electrode cable 25b) is welded to the negative electrode layer 23b, and a lead (positive electrode cable 25a) is also welded to the positive electrode layer 23 d.
Manufacturing a hard ceramic film with a certain thickness into a second matching layer 23e, mixing, curing and molding epoxy resin and inorganic powder, and grinding the mixture into a composite material film with a certain thickness to manufacture a first matching layer 23 a; the first matching layer 23a and the second matching layer 23e are bonded together by glue and then bonded to the primary laminate, and during bonding, the first matching layer 23a is on the outside and the second matching layer 23e is bonded to the negative electrode layer 23b, thus forming a secondary laminate.
The secondary lamination is arranged in an inner lining 22 made of organic glass to manufacture an ultrasonic head, the ultrasonic head is arranged in a cylinder 21a made of stainless steel materials, a backing material (formed by mixing glue and high-density metal compound powder) is poured into the cylinder 21a, and the backing material is solidified to form a backing layer 24.
The connector 25 is mounted on the cover plate 21b, the cover plate 21b is covered with the cylinder 21a, the cylinder 21a and the cover plate 21b form a shell 21, the anode cable 25a and the cathode cable 25b are connected with the connector 25, and after packaging, a layer of polymer coating 26 is plated on the outer surface of the shell 21 by a vacuum coating process to protect the transducer.
According to the number of the array holes on the helmet body 1, the corresponding number of the unit ultrasonic transducers 2 are installed in the holes, the unit ultrasonic transducers 2 are connected through signal lines, and external imaging equipment is connected after the signal lines are gathered.
According to the probe device, the helmet main body 1 is provided with the unit ultrasonic transducers 2 distributed in a matrix manner, the signal contact surface is improved by utilizing the unit ultrasonic transducers 2 distributed in the matrix manner, and the single unit ultrasonic transducer 2 is internally provided with concentrated ultrasonic waves through the inner lining 22, so that the signal intensity is improved, and the effects of improving the imaging range and the imaging quality are achieved.
While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.
Claims (6)
1. The utility model provides a photoacoustic imaging array probe device of helmet-type shape array arrangement mode, includes helmet main part (1), characterized by: the helmet body (1) is provided with unit ultrasonic transducers (2) distributed in a matrix manner, and the helmet body (1) is provided with an optical fiber (3) capable of continuously transmitting pulse signals; the unit ultrasonic transducer (2) comprises a shell (21), an inner bushing (22) is arranged in the shell (21), a first matching layer (23a), a negative electrode layer (23b), a piezoelectric ceramic layer (23c) and a positive electrode layer (23d) are sequentially stacked in the inner bushing (22), a backing layer (24) is arranged on the inner side of the inner bushing (22), a connector (25) used for connecting an optical fiber (3) is arranged on the unit ultrasonic transducer (2), the connector (25) is connected with the positive electrode layer (23d) through a positive electrode cable (25a), and the connector (25) is connected with the negative electrode layer (23b) through a negative electrode cable (25 b).
2. The photoacoustic imaging array probe apparatus having a helmet-type array arrangement of shapes according to claim 1, wherein: a second matching layer (23e) is arranged between the first matching layer (23a) and the negative electrode layer (23 b).
3. The photoacoustic imaging array probe apparatus having a helmet-type array arrangement of shapes according to claim 2, wherein: the outer surface of the shell (21) is plated with a polymer coating (26).
4. A head-mounted photoacoustic imaging array probe apparatus according to claim 3, wherein: the unit ultrasonic transducer (2) is of a cylindrical structure, and the shell (21) comprises a cylinder body (21a) and a cover plate (21b) arranged at the top of the cylinder body (21 a).
5. The photoacoustic imaging array probe apparatus having a helmet-type array arrangement of shapes according to claim 4, wherein: the helmet is characterized in that the center of the helmet main body (1) is provided with an optical fiber mounting hole (1a), and the optical fiber (3) penetrates out of the optical fiber mounting hole (1 a).
6. The photoacoustic imaging array probe apparatus having a helmet-type array arrangement of shapes according to claim 5, wherein: the helmet main body (1) is of a hemispherical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470180.1U CN215656207U (en) | 2021-06-30 | 2021-06-30 | Photoacoustic imaging array probe device adopting helmet type shape array arrangement mode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121470180.1U CN215656207U (en) | 2021-06-30 | 2021-06-30 | Photoacoustic imaging array probe device adopting helmet type shape array arrangement mode |
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| CN215656207U true CN215656207U (en) | 2022-01-28 |
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| CN202121470180.1U Active CN215656207U (en) | 2021-06-30 | 2021-06-30 | Photoacoustic imaging array probe device adopting helmet type shape array arrangement mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445896A (en) * | 2022-08-31 | 2022-12-09 | 南京航空航天大学 | Ultrasonic transducer |
-
2021
- 2021-06-30 CN CN202121470180.1U patent/CN215656207U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445896A (en) * | 2022-08-31 | 2022-12-09 | 南京航空航天大学 | Ultrasonic transducer |
| CN115445896B (en) * | 2022-08-31 | 2024-05-24 | 南京航空航天大学 | Ultrasonic transducer |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20231007 Address after: 055450 North Section Road West, Gongxing Street, Baixiang County, Xingtai City, Hebei Province Patentee after: HEBEI AOSUO ELECTRONIC TECHNOLOGY CO.,LTD. Address before: Room 112, building 4, area a, 925 Yecheng Road, Jiading Industrial Zone, Jiading District, Shanghai, 201821 Patentee before: Aosheng (Shanghai) Electronic Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |