CN114504742A - B-ultrasonic positioning high-intensity focusing ultrasonic therapeutic head - Google Patents
B-ultrasonic positioning high-intensity focusing ultrasonic therapeutic head Download PDFInfo
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- CN114504742A CN114504742A CN202011286301.7A CN202011286301A CN114504742A CN 114504742 A CN114504742 A CN 114504742A CN 202011286301 A CN202011286301 A CN 202011286301A CN 114504742 A CN114504742 A CN 114504742A
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- ultrasonic
- piezoelectric ceramic
- transducer
- transducer base
- base
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N7/00—Ultrasound therapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/42—Details of probe positioning or probe attachment to the patient
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
- A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
Abstract
The invention discloses a B-ultrasonic positioning high-strength focusing ultrasonic treatment head which comprises a transducer base, an insulating waterproof layer and a plurality of piezoelectric ceramic transduction pieces, wherein a through hole for a B-ultrasonic probe to pass through is formed in the middle area of the transducer base, a plurality of positioning grooves are formed in the bottom surface of the transducer base, the positioning grooves are uniformly arranged at intervals and surround the through hole, the positioning grooves correspond to the piezoelectric ceramic transduction pieces one by one, the piezoelectric ceramic transduction pieces are arranged in the positioning grooves, the curvature radius of the piezoelectric ceramic transduction pieces is matched with the curvature radius of the inner walls of the positioning grooves, the insulating waterproof layer is coated on the bottom surface of the transducer base, and the insulating waterproof layer completely covers the piezoelectric ceramic transduction pieces. The invention is beneficial to sound wave convergence, does not need to be adjusted and is very convenient to process and manufacture. Meanwhile, the stability of the B ultrasonic positioning high-intensity focused ultrasound treatment head is improved, and the service life of the B ultrasonic positioning high-intensity focused ultrasound treatment head is greatly prolonged.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a B-ultrasonic positioning high-intensity focusing ultrasonic treatment head.
Background
In B ultrasonic positioning high-intensity focused ultrasound, in order to realize the focusing of high-power ultrasonic waves, a structural form of a plane piezoelectric ceramic piece and an acoustic lens is adopted, a structural form of a piezoelectric ceramic piece which is made into a concave spherical surface is adopted, a reflector focusing mode is also utilized, a phased array focusing mode of a plurality of small piezoelectric ceramic pieces is adopted, and the like, and the structure of the plane piezoelectric ceramic piece and the acoustic lens has large loss and lower efficiency because the plane piezoelectric ceramic piece and the acoustic lens pass through the lens; the piezoelectric ceramic chip structure with the large concave spherical surface is high in manufacturing difficulty and high in cost; the reflector focusing mode has large loss of a reflecting surface and short service life, while the phased array focusing mode has complex process and low control precision, thereby bringing about larger side lobe and being limited.
At present, a plurality of self-focusing piezoelectric ceramic plates are fixed on a conical ring through a gland and a set screw and are symmetrically arranged around the axis of the ring, so that focusing is realized. However, the plurality of self-focusing piezoelectric ceramic pieces need to be finely adjusted by the fastening screws respectively, so that the focuses of the plurality of self-focusing piezoelectric ceramic pieces are overlapped on the axis of the conical ring, the adjustment is complicated, the adjustment freedom degree is limited, and the convergence of sound waves is not facilitated. The fastening screws are easy to deviate under the influence of transportation and use, the convergence of a plurality of self-focusing piezoelectric ceramic pieces is further not facilitated, the periphery of a single sealed piezoelectric ceramic piece is fastened, the pressure point effect is limited, the sealing performance is poor, and the service life is short.
Disclosure of Invention
The invention provides a B-ultrasonic positioning high-intensity focusing ultrasonic treatment head, aiming at overcoming the defects that a plurality of self-focusing piezoelectric ceramic plates in the existing multielement self-focusing technology are not beneficial to convergence and have short service life.
The invention solves the technical problems through the following technical scheme:
the utility model provides a B ultrasonic localization high strength focus ultrasonic therapy head, its characterized in that, it includes transducer base, insulating waterproof layer and a plurality of piezoceramics transduction piece, the through-hole that is used for the B ultrasonic probe to pass is offered to the middle zone of transducer base, a plurality of constant head tanks, a plurality of have been seted up to the bottom surface of transducer base the even interval of constant head tank set up and surround in the through-hole, it is a plurality of constant head tank and a plurality of piezoceramics transduction piece one-to-one, just piezoceramics transduction piece is arranged in the constant head tank, just the curvature radius of piezoceramics transduction piece with the inner wall curvature radius phase-match of constant head tank, insulating waterproof layer cladding in the bottom surface of transducer base, just insulating waterproof layer covers a plurality ofly completely piezoceramics transduction piece.
Preferably, the transducer base comprises a base body and a matching layer, one side of the matching layer is attached to the bottom surface of the base body, and the other side of the matching layer is provided with a plurality of positioning grooves.
Preferably, the material of the matching layer is rubber or polyester material.
Preferably, the insulating and waterproof layer includes a first connecting portion, a covering portion and a second connecting portion, the covering portion is located on the bottom surface of the transducer base and completely covers the plurality of piezoelectric ceramic transducer pieces, one end of the first connecting portion is connected to the outer side of the covering portion, the other end of the first connecting portion is bent inward and connected to the outer wall surface of the transducer base, one end of the second connecting portion is connected to the inner side of the covering portion, and the other end of the second connecting portion is bent outward and connected to the inner wall surface of the transducer base.
Preferably, the transducer base has a plurality of groups of lead ports, the plurality of groups of lead ports correspond to the plurality of piezoelectric ceramic transducer plates one to one, and the lead ports are connected to the piezoelectric ceramic transducer plates.
Preferably, the bottom surface of the transducer base is in a groove shape, and the radius of curvature of the piezoelectric ceramic transducer pieces is the same as that of the bottom surface of the transducer base.
Preferably, the number of the piezoelectric ceramic energy conversion pieces is even, and the piezoelectric ceramic energy conversion pieces are symmetrically arranged along the central axis of the energy converter base.
Preferably, the number of the piezoceramic transducer plates is 6 or 8.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
according to the B-ultrasonic positioning high-intensity focusing ultrasonic treatment head, the plurality of piezoelectric ceramic energy conversion pieces are accurately positioned and installed on the energy converter base through the positioning grooves, so that sound waves are gathered conveniently, adjustment is not needed, and the processing and the manufacturing are very convenient. Meanwhile, the sealing of a plurality of piezoelectric ceramic energy conversion pieces can be realized through the insulating waterproof layer, the stability of the B ultrasonic positioning high-strength focusing ultrasonic treatment head is improved, and the service life of the B ultrasonic positioning high-strength focusing ultrasonic treatment head is greatly prolonged.
Drawings
Fig. 1 is a schematic internal structural diagram of a B-ultrasonic positioning high-intensity focused ultrasound treatment head according to an embodiment of the invention.
Description of reference numerals:
transducer base 1
Through-hole 11
Base body 12
Matching layer 13
Lead port 14
Piezoelectric ceramic transducer 2
Insulating and waterproof layer 3
First connecting portion 31
Second connecting portion 33
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1, the B-ultrasonic positioning high-intensity focused ultrasound treatment head according to the embodiment of the present invention includes a transducer base 1, an insulating waterproof layer 3, and a plurality of piezoelectric ceramic transduction pieces 2, a through hole 11 for passing a B-ultrasonic probe is formed in a middle region of the transducer base 1, a plurality of positioning grooves are formed in a bottom surface of the transducer base 1, the plurality of positioning grooves are uniformly spaced and surround the through hole 11, the plurality of positioning grooves correspond to the plurality of piezoelectric ceramic transduction pieces 2 one-to-one, the piezoelectric ceramic transduction pieces 2 are disposed in the positioning grooves, curvature radii of the piezoelectric ceramic transduction pieces 2 are matched with curvature radii of inner walls of the positioning grooves, the insulating waterproof layer 3 covers the bottom surface of the transducer base 1, and the insulating waterproof layer 3 completely covers the plurality of piezoelectric ceramic transduction pieces 2.
When the B ultrasonic positioning high-strength focusing ultrasonic treatment head is processed and manufactured, the piezoelectric ceramic energy conversion pieces 2 are respectively installed and arranged in the corresponding positioning grooves, so that the piezoelectric ceramic energy conversion pieces 2 are accurately positioned without being adjusted, and then the insulating waterproof layer 3 coats the bottom surface of the energy converter base 1 to realize waterproof sealing of the piezoelectric ceramic energy conversion pieces 2. Realize installing a plurality of piezoceramics transducing piece 2 accurate positioning on transducer base 1 through the constant head tank, do benefit to and assemble, and need not to adjust, it is very convenient to process the preparation. Meanwhile, the sealing of the piezoelectric ceramic energy conversion pieces 2 can be realized through the insulating waterproof layer 3, the vibration space of the piezoelectric ceramic energy conversion pieces 2 is expanded, the stability of the ultrasonic B positioning high-intensity focused ultrasound treatment head is improved, and the service life of the ultrasonic B positioning high-intensity focused ultrasound treatment head is greatly prolonged.
The transducer base 1 is used for fixing a plurality of piezoelectric ceramic transducer pieces 2 and a B-ultrasonic probe, the B-ultrasonic probe is arranged in a through hole 11 of the transducer base 1, and a positioning system is formed by the B-ultrasonic probe and the transducer base 1 to position a treatment target.
The bottom surface of the transducer base 1 is in a groove shape, and the curvature radius of the piezoelectric ceramic transducer pieces 2 is the same as that of the bottom surface of the transducer base 1. So that the single piezoelectric ceramic energy conversion piece 2 is self-focused and simultaneously focused in the same focal area. When the characteristics are used for HIFU treatment, the high-energy ultrasonic transducer can act on the affected part for treatment, and when the ultrasonic channel is blocked, the excitation output of the corresponding piezoelectric ceramic transducer piece 2 can be closed to implement the treatment.
The number of the piezoelectric ceramic energy conversion pieces 2 is even, and the plurality of the piezoelectric ceramic energy conversion pieces 2 are symmetrically arranged along the central axis of the energy converter base 1. Preferably, the number of piezoceramic transducer elements 2 is 6 or 8. The insulating waterproof layer 3 can be integrally formed with the transducer base 1 and the plurality of piezoelectric ceramic transducer pieces 2 through an injection molding process.
The transducer base 1 comprises a base body 12 and a matching layer 13, one side of the matching layer 13 is attached to the bottom surface of the base body 12, and the other side of the matching layer 13 is provided with a plurality of positioning grooves. The positioning groove is machined and manufactured on the matching layer 13, so that the machining and the manufacturing are convenient, and the precision is higher. The matching layer 13 is made of rubber or polyester material, the acoustic dielectric constant is close to that of water, the insulating coefficient of the piezoelectric ceramic transduction piece 2 can be enhanced through the insulating waterproof layer 3 and the matching layer 13, and meanwhile, the acoustic impedance of the piezoelectric ceramic transduction piece can be matched with that of a vacuum water medium.
The insulating waterproof layer 3 includes a first connecting portion 31, a covering portion 32 and a second connecting portion 33, the covering portion 32 is located on the bottom surface of the transducer base 1 and completely covers the plurality of piezoelectric ceramic transducer pieces 2, one end of the first connecting portion 31 is connected to the outer side of the covering portion 32, the other end of the first connecting portion 31 is bent inward and connected to the outer wall surface of the transducer base 1, one end of the second connecting portion 33 is connected to the inner side of the covering portion 32, and the other end of the second connecting portion 33 is bent outward and connected to the inner wall surface of the transducer base 1.
The contact area between the insulating waterproof layer 3 and the transducer base 1 can be increased through the first connecting part 31 and the second connecting part 33, so that the connecting strength between the insulating waterproof layer 3 and the transducer base 1 is effectively enhanced, the vibration space of the piezoelectric ceramic transducer piece 2 is expanded, and the stability of the B-ultrasonic positioning high-strength focusing ultrasonic treatment head is greatly improved; meanwhile, the sealing area is increased, and the waterproof sealing effect is better.
The transducer base 1 is provided with a plurality of groups of lead ports 14, the plurality of groups of lead ports 14 correspond to the plurality of piezoelectric ceramic transducer pieces 2 one by one, and the lead ports 14 are connected with the piezoelectric ceramic transducer pieces 2. The lead port 14 is convenient for connecting with an insulated wire, and the use is very convenient.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (8)
1. The utility model provides a B ultrasonic localization high strength focus ultrasonic therapy head, its characterized in that, it includes transducer base, insulating waterproof layer and a plurality of piezoceramics transduction piece, the through-hole that is used for the B ultrasonic probe to pass is offered to the middle zone of transducer base, a plurality of constant head tanks, a plurality of have been seted up to the bottom surface of transducer base the even interval of constant head tank set up and surround in the through-hole, it is a plurality of constant head tank and a plurality of piezoceramics transduction piece one-to-one, just piezoceramics transduction piece is arranged in the constant head tank, just the curvature radius of piezoceramics transduction piece with the inner wall curvature radius phase-match of constant head tank, insulating waterproof layer cladding in the bottom surface of transducer base, just insulating waterproof layer covers a plurality ofly completely piezoceramics transduction piece.
2. The ultrasonic B-ultrasonic positioning high-intensity focusing ultrasonic treatment head according to claim 1, wherein the transducer base comprises a base body and a matching layer, one side of the matching layer is attached to the bottom surface of the base body, and the other side of the matching layer is provided with a plurality of positioning grooves.
3. The ultrasonic B-ultrasonic localized high intensity focused ultrasound treatment head of claim 2, wherein the material of the matching layer is rubber or polyester material.
4. The ultrasonic B-mode treatment head according to claim 1, wherein the insulating and waterproof layer comprises a first connecting portion, a covering portion and a second connecting portion, the covering portion is located on the bottom surface of the transducer base and completely covers the piezoelectric ceramic transducer pieces, one end of the first connecting portion is connected to the outer side of the covering portion, the other end of the first connecting portion is bent inward and connected to the outer wall surface of the transducer base, one end of the second connecting portion is connected to the inner side of the covering portion, and the other end of the second connecting portion is bent outward and connected to the inner wall surface of the transducer base.
5. The ultrasonic B-mode positioning high-intensity focusing ultrasonic treatment head according to claim 1, wherein the transducer base is provided with a plurality of groups of lead ports, the lead ports correspond to a plurality of piezoelectric ceramic transducer pieces one by one, and the lead ports are connected with the piezoelectric ceramic transducer pieces.
6. The ultrasonic B-mode positioning high-intensity focusing ultrasonic treatment head of claim 1, wherein the bottom surface of the transducer base is groove-shaped, and the radius of curvature of the piezoelectric ceramic transducer plates is the same as that of the bottom surface of the transducer base.
7. The ultrasonic B-ultrasonic positioning high-intensity focusing ultrasonic treatment head of claim 1, wherein the number of the piezoelectric ceramic energy-converting sheets is even, and a plurality of the piezoelectric ceramic energy-converting sheets are symmetrically arranged along the central axis of the energy-converting base.
8. The B-ultrasonic high-intensity focused ultrasound treatment head according to claim 7, wherein the number of the piezoelectric ceramic transducer plates is 6 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011286301.7A CN114504742A (en) | 2020-11-17 | 2020-11-17 | B-ultrasonic positioning high-intensity focusing ultrasonic therapeutic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011286301.7A CN114504742A (en) | 2020-11-17 | 2020-11-17 | B-ultrasonic positioning high-intensity focusing ultrasonic therapeutic head |
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| Publication Number | Publication Date |
|---|---|
| CN114504742A true CN114504742A (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011286301.7A Pending CN114504742A (en) | 2020-11-17 | 2020-11-17 | B-ultrasonic positioning high-intensity focusing ultrasonic therapeutic head |
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| CN (1) | CN114504742A (en) |
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2020
- 2020-11-17 CN CN202011286301.7A patent/CN114504742A/en active Pending
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