CN2503914Y - Focused ultrasonic wave source - Google Patents
Focused ultrasonic wave source Download PDFInfo
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- CN2503914Y CN2503914Y CN 01270265 CN01270265U CN2503914Y CN 2503914 Y CN2503914 Y CN 2503914Y CN 01270265 CN01270265 CN 01270265 CN 01270265 U CN01270265 U CN 01270265U CN 2503914 Y CN2503914 Y CN 2503914Y
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Abstract
The utility model provides a focused ultrasonic wave source which comprises an ultrasonic emission component used for emission and a focusing block used for focusing shot supersonic wave. After the transmitted ultrasonic wave is focused by the focusing block, the transmitted supersonic wave spreads toward a focal point in the form of approximate spherical wave, wherein the included angle alpha is at the range of 50 DEG to 120 DEG which is formed between two endpoints of the external profile diameter of the focusing block to the connecting line of the focal point. The ultrasonic wave source of the utility model has obvious advantage over the existing small-bore corner wave source by testing the focusing performance. The utility model enables the focus supersonic to acquire high enough acoustic intensity and temperature on the focal point. Consequently, the utility model can kill biological tissue, and at the same time the utility model can avoid or reduce the damage to the human body in the course of the supersonic conduction to the large extent. The utility model can obviously alleviate a patient's ache in clinical treatment, and accordingly satisfactory effects are obtained.
Description
Invention field
This utility model relates to a kind of parts that are used on the medical treatment device, especially relates to the wave source that is used for high-energy concentration ultrasonic (HIFU) therapy apparatus.
Background technology
At present, the in-vitro high-energy focusing ultrasonic treatment device generally is made of following several sections: in order to produce the high-energy concentration ultrasonic wave source and the drive circuit of high-energy concentration ultrasonic; Be used to seek therapeutic goal and it is moved to the navigation system at ultrasonic transducer focus place, it comprises a medical video system (mostly being the B ultrasonic machine), a carrying patient's device (for example bed surface), and with the displacement system of this device with wave source catch cropping space relative displacement; High-energy ultrasound conducting structure and transmitting medium processing system, because the ultrasound wave that high-energy concentration ultrasonic is suitable for must import in patient's body by special transmitting medium (using the water of handling through the degassing) more, so must have one to hold the structure (as tank, water pocket etc.) of transmitting medium and the device that adds, discharges transmitting medium and medium is handled in the place ahead of the high-energy concentration ultrasonic source surface of emission.
In above-mentioned several component parts of extenal high-energy focusing ultrasonic treating apparatus, the high-energy concentration ultrasonic wave source is most important parts.No matter focusing ultrasonic source adopts which kind of type of focusing (lens refraction focusing, camber reflection focusing, concave sphere self focusing etc.), always pass to focus with the form near spherical wave after institute's ultrasonic waves transmitted focuses on.At this, its surface of emission external profile diameter is called " aperture ", the external profile diameter two-end-point is called " angular aperture " to the angle of focus line.
The contradiction of properly settling safety and effectiveness is the topmost problem that medical device product is faced.To the big quantity research of high-energy focusing ultrasonic treatment machine with facts have proved, energy focusing ultrasonic-high obtains the sufficiently high sound intensity and temperature at the focus place not difficult to kill biological tissue, and how to avoid or reduce on the ultrasonic conducting path the damage of human body as far as possible and be not easy putting before this.Addressing this problem is the key of high-energy focusing ultrasonic treatment success or failure, quality.The focusing performance that as far as possible improves ultrasound source is the main path of head it off, and angular aperture then is the major parameter that influences the wave source focusing performance.
Present existing high-energy focusing ultrasonic treatment machine wave source majority has adopted 60 ° of angular apertures, the employing that has littler angular aperture (less than 50 °).And according to present practice, the focusing performance of wave source with these angular aperture angles is unsatisfactory, or can make the patient produce obvious pain, causes the path damage, or can not obtain the sufficiently high sound intensity and temperature at the focus place to kill biological tissue.
Adopt the ultrasonic percent value of focus the place ahead 3-5cm (hereafter is " the burnt acoustic pressure ratio in footpath "), to study the influence of angular aperture to this ratio as the index (this ratio is healed little focusing performance better) of estimating focusing performance by maximum sound pressure in the path domain and focus acoustic pressure.Practice confirms, angular aperture hour, focusing performance improves obviously with the increase of angular aperture, and after angular aperture increased to a certain degree, the improvement degree of focusing performance reduced gradually.Add angular aperture and increase that wave source volume, the cost bring increase and the factors such as difficulty of treatment aspect, therefore, address the above problem and be very important thereby make the angular aperture of wave source focusing block be in an optimum range.
Summary of the invention
The purpose of this utility model provides a kind of focusing ultrasonic source, it can have ideal focusing performance, make focus supersonic obtain the sufficiently high sound intensity and temperature, thereby kill biological tissue, also can avoid simultaneously or reduce on the ultrasonic conducting path damage as far as possible human body at the focus place.
To achieve these goals, this utility model provides a kind of focusing ultrasonic source, it comprises the focusing block that is used to launch hyperacoustic ultrasound emitting device and is used to make the ultrasound wave focusing of being launched, institute's ultrasonic waves transmitted passes to focus with the form near spherical wave after described focusing block focuses on, wherein, the external profile diameter two-end-point of its focusing block arrives the angle of focus line in 50 °-120 ° scope.
Preferably, the external profile diameter two-end-point of focusing block to the angle of focus line below 60 ° in 50 ° scope, for example be 56 °; Perhaps this angle more than 60 ° in 120 ° scope, for example be 110 °.
Ultrasound source of the present utility model focusing performance after tested all obviously is better than angle, existing small-bore wave source, can make focus supersonic obtain the sufficiently high sound intensity and temperature at the focus place, thereby kill biological tissue, also can avoid simultaneously or reduce on the ultrasonic conducting path as far as possible, patient's pain is obviously alleviated the damage of human body.
Description of drawings
Below in conjunction with drawings and Examples this utility model is described.
Fig. 1 is the sketch map of a kind of embodiment of focusing ultrasonic source of the present utility model, and its type of focusing that adopts is the sphere self-focusing;
Fig. 2 is the sketch map of the another kind of embodiment of focusing ultrasonic source of the present utility model, and its type of focusing that adopts is lens focus.
As shown in the figure, it schematically shows the structure principle chart of focusing ultrasonic source of the present utility model, it comprises the focusing block 1 that is used to launch hyperacoustic ultrasound emitting device 2 and is used to make the ultrasound wave launched to focus on, institute's ultrasonic waves transmitted passes to focal point F with the form near spherical wave after described focusing block 1 focuses on, wherein, the external profile diameter two-end-point of its focusing block 1 arrives the angle α (promptly above said " angular aperture ") of focus line in 50 °-120 ° scope.
Preferably, the external profile diameter two-end-point of focusing block to angle (angular aperture) α of focus line below 60 ° in 50 ° scope, for example 56 °.Perhaps, this angle α more than 60 ° in 120 ° scope, for example 110 °.
For example: the wave source aperture angle is elected 56 ° as, adopts the polynary battle array of concave spherical surface to focus on, and focused radius R=300mm.This wave source can be used for underlying wave source high-energy focusing ultrasonic treatment machine.
For another example: the wave source aperture angle is elected 110 ° as, adopts concave spherical surface to focus on focused radius R=50mm.This wave source can be used for showing the superficial part high-energy focusing ultrasonic treatment.
Wherein, described focusing block 1 can be lens, and it adopts lens refraction mode to focus on, as shown in Figure 2; Described focusing block 1 also can be concave spherical surface, and it adopts the concave sphere self focusing mode to focus on, as shown in Figure 1.
As mentioned above, wave source focusing block angular aperture scope is comparatively suitable in 50 ° of-120 ° of scopes.That is, under different application conditions, angular aperture be below 60 ° until more than 50 ° or 60 ° until 120 ° scope.For the treatment of table superficial part position, adopt the angular aperture more than 60 ° more favourable.
According to ultrasound source of the present utility model after tested focusing performance all obviously be better than angle, existing small-bore wave source, can make focus supersonic obtain the sufficiently high sound intensity and temperature at the focus place, thereby kill biological tissue, also can avoid simultaneously or reduce on the ultrasonic conducting path damage as far as possible human body, patient's pain is obviously alleviated, obtained gratifying effect.
Claims (8)
1. focusing ultrasonic source, it comprises the focusing block (1) that is used to launch hyperacoustic ultrasound emitting device (2) and is used to make the ultrasound wave focusing of being launched, institute's ultrasonic waves transmitted passes to focus with the form near spherical wave after described focusing block (1) focuses on, it is characterized in that the external profile diameter two-end-point of its focusing block (1) arrives the angle α of focus line in 50 °-120 ° scope.
2. focusing ultrasonic source according to claim 1 is characterized in that, the external profile diameter two-end-point of described focusing block (1) to the angle α of focus line below 60 ° in 50 ° scope.
3. focusing ultrasonic source according to claim 2 is characterized in that, the external profile diameter two-end-point of described focusing block (1) is 56 ° to the angle α of focus line.
4. focusing ultrasonic source according to claim 1 is characterized in that, the external profile diameter two-end-point of described focusing block (1) to the angle α of focus line more than 60 ° in 120 ° scope.
5. focusing ultrasonic source according to claim 4 is characterized in that, the external profile diameter two-end-point of described focusing block (1) is 110 ° to the angle α of focus line.
6. according to the described focusing ultrasonic source of one of claim 1-4, it is characterized in that described focusing block (1) is lens, it adopts lens refraction mode to focus on.
7. according to the described focusing ultrasonic source of one of claim 1-4, it is characterized in that described focusing block (1) is a curved surface, it adopts camber reflection to focus on.
8. according to the described focusing ultrasonic source of one of claim 1-4, it is characterized in that described focusing block (1) is a concave spherical surface, it adopts the concave sphere self focusing mode to focus on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01270265 CN2503914Y (en) | 2001-11-05 | 2001-11-05 | Focused ultrasonic wave source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01270265 CN2503914Y (en) | 2001-11-05 | 2001-11-05 | Focused ultrasonic wave source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2503914Y true CN2503914Y (en) | 2002-08-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01270265 Expired - Fee Related CN2503914Y (en) | 2001-11-05 | 2001-11-05 | Focused ultrasonic wave source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2503914Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190436B (en) * | 2006-11-22 | 2010-09-29 | 中国科学院声学研究所 | Phase control focusing ultrasound wave source device |
| CN102416225A (en) * | 2010-09-27 | 2012-04-18 | 重庆融海超声医学工程研究中心有限公司 | Ultrasonic transducer |
-
2001
- 2001-11-05 CN CN 01270265 patent/CN2503914Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101190436B (en) * | 2006-11-22 | 2010-09-29 | 中国科学院声学研究所 | Phase control focusing ultrasound wave source device |
| CN102416225A (en) * | 2010-09-27 | 2012-04-18 | 重庆融海超声医学工程研究中心有限公司 | Ultrasonic transducer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |