CN103028203A - Ultrasound fat loss treatment head and working method thereof - Google Patents
Ultrasound fat loss treatment head and working method thereof Download PDFInfo
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Abstract
The invention provides an ultrasound fat loss treatment head and a working method of the ultrasound fat loss treatment head, and belongs to the field of medical ultrasound treatment. The ultrasound fat loss treatment head comprises an ultrasound energy converter. The working method includes the steps of obtaining the treatment condition of a to-be-treated area, determining the size and the position of a focal spot of the ultrasound energy converter according to the obtained treatment condition, and adjusting the working parameter of the ultrasound energy converter so as obtain the determined size and the determined position of the focal spot. The ultrasound fat loss treatment head and the working method of the ultrasound fat loss treatment head can improve the safety and the effectiveness of the ultrasound treatment.
Description
Technical field
The present invention relates to medical supersonic treatment field, refer to especially a kind of ultrasonic fat reducing treatment head and method of work thereof.
Background technology
As everyone knows, ultrasound wave and tissue interact and can produce some biological tissues effect.According to hyperacoustic local sound intensity height and sound wave radiation pattern, these biological tissue's effects can be divided into heat effect and non-thermomechanical effect.Organize the heat effect phalangeal cell to cause it to be warming up to the heat necrosis to the absorption of ultrasonic energy.Organize non-thermomechanical effect to refer to because phenomenons such as the cellular activity that acoustic cavitation, acoustic streaming and local small amplitude motion cause increases and then cellular morphology is produced changes, break, apoptosis.The physical factor that affects the ultrasound biological organizational effect comprises sound field focusing form, frequency of sound wave, acoustic pressure amplitude, the continuous or factors such as pulse sound radiation pattern (pulse recurrence frequency and dutycycle), standing-wave condition, the static pressure of medium, temperature, viscid state and boundary condition.
In recent years, hyperacoustic biological tissue effect is subject to broad research and application day by day in the ultrasonic field for the treatment of.The application that high intensity ultrasound treatment melts at neoplastic fevers, external knock wave is pulverized the aspects such as urinary stone, drug conveying, block nerves conduction has new progress.
In fat-reducing and cosmetic applications field, ultrasound wave also manifests its unique advantage, for example adopts the auxiliary Wicresoft of external low frequency ultrasound wave liposuction procedures can strengthen local fat and destroys efficient.The method and apparatus that adopts external emission high-intensity focusing ultrasonic wave to destroy regional adipose tissue is separately experiencing clinical verification, and manifests its curative effect, and its safety also obtains preliminary identification.This type for the treatment of is often selected first and is needed area for treatment, then adopt the External ultrasound transducers transmit ultrasonic waves to focus in the subcutaneous layer of fat, at current focal spot region destruction of adipose tissue, and pointwise is moved transducer and is changed the focal position and cover required area for treatment based on hyperacoustic tissue heat effect or mechanical effect principle.Under suitable area for treatment and dosage condition, the fatty tissue of ultrasonic disruption is decomposed from the body metabolism cycle via human body.
The employing type of focusing can significantly promote hyperacoustic local sound intensity that focuses on, and the high sound intensity zone is in suitable scope, thereby facility accurately locates and produce desirable ultrasonic wave tissue effect in the specific region to limit focal spot (6dB focus sound intensity zone).In the focus supersonic fat reducing treatment, zone to be treated in subcutaneous layer of fat the degree of depth and safety and the effectiveness of focal spot size and treatment direct relation is arranged.At first, consider from the treatment safety perspective, for avoiding the impact of focusing far field muscle and connective tissue and focus near field skin histology, the degree of depth in zone to be treated and axial length are subject to the restriction of fat deposit thickness, and the inner and outer boundary position of its focal spot region should be comprised in the fat deposit and apart from the fat deposit inner and outer boundary enough secure border distances.Secondly, consider from treatment effectiveness angle, the transverse width in zone to be treated affects the size in single radiation treatment zone, and transverse width is wider, and then each area for treatment is just larger, thereby affects the time length of large tracts of land fat reducing treatment.
In the actual therapeutic, for different fat deposit thickness situations, the degree of depth, axial length and the transverse width of different focal spots need to be set, adopt large focal spot to increase the single therapy zone to thicker fat deposit, thinner fat deposit is adopted little focal spot, take into account treatment safety and effectiveness.But in large tracts of land fat reducing treatment process, may run into the larger situation of single patient's body part fat deposit varied in thickness, at this moment just need frequent size, position and the shape that changes focal spot, and frequent substitution treatment head can delay treating time.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of ultrasonic fat reducing treatment head and method of work thereof, can adjust in real time position, the size and shape of focal spot, improves safety and the effectiveness of ultrasonic therapeutic.
For solving the problems of the technologies described above, embodiments of the invention provide technical scheme as follows:
On the one hand, provide a kind of method of work of ultrasonic fat reducing treatment head, described ultrasonic fat reducing treatment head comprises a ultrasonic transducer, and described method of work comprises:
Obtain the treatment situation in zone to be treated;
Determine size, position and the shape of the focal spot of ultrasonic transducer according to the treatment situation of obtaining;
Adjust the running parameter of described ultrasonic transducer, with size, position and the shape that obtains determined focal spot.
Further, the treatment situation in described zone to be treated comprises the fat deposit thickness in zone to be treated, and the described treatment situation of obtaining zone to be treated comprises:
To described emission one ultrasound wave burst pulse in zone to be treated;
Obtain the interval between the second ultrasonic echo that the interface layer of first ultrasonic echo of interface layer reflection of coupling liquid and epidermis and fat and muscle reflects;
Described interval be multiply by behind the bulk sound velocity of fatty tissue divided by 2, obtain the fat deposit thickness in described zone to be treated.
Further, the running parameter of the described ultrasonic transducer of described adjustment comprises with size, position and the shape that obtains determined focal spot:
Adjust the focal length of described ultrasonic transducer and the ratio in aperture, to obtain the size of determined focal spot; Or
Adjust effective emission area of described ultrasonic transducer, to obtain the size of determined focal spot.
Further, the running parameter of the described ultrasonic transducer of described adjustment comprises with size and the position that obtains determined focal spot:
Adjust the focal length of described ultrasonic transducer and/or described surface of ultrasonic transducer to the distance of skin surface, to obtain the position of determined focal spot.
Further, the shape of described focal spot comprises axial dimension and the lateral dimension of described focal spot, and the running parameter of the described ultrasonic transducer of described adjustment comprises with size and the position that obtains determined focal spot:
Adjust the operation wavelength of described ultrasonic transducer and the ratio in focal length and aperture, with axial dimension and the lateral dimension that obtains determined focal spot.
The embodiment of the invention also provides a kind of ultrasonic fat reducing treatment head, comprises a ultrasonic transducer, and described ultrasonic fat reducing treatment head also comprises:
Measurement module for the treatment situation of obtaining zone to be treated;
For the size of the focal spot of determining ultrasonic transducer according to the treatment situation of obtaining and the determination module of position;
Be used for adjusting the running parameter of described ultrasonic transducer, with the control module of the size, position and the shape that obtain determined focal spot.
Further, the treatment situation in described zone to be treated comprises the fat deposit thickness in zone to be treated, and described measurement module comprises:
Be used for to the emission submodule of described emission one ultrasound wave burst pulse in zone to be treated;
Be used for obtaining the measurement submodule of the interval between the second ultrasonic echo that the interface layer of first ultrasonic echo of interface layer reflection of coupling liquid and epidermis and fat and muscle reflects;
Be used for described interval be multiply by behind the bulk sound velocity of fatty tissue divided by 2, obtain described zone to be treated fat deposit thickness obtain submodule.
Further, described control module comprises:
Be used for adjusting the focal length of described ultrasonic transducer and the ratio in aperture, to obtain the size of determined focal spot; Or
Adjust effective emission area of described ultrasonic transducer, with the first control submodule of the size that obtains determined focal spot.
Further, described control module comprises:
Be used for adjusting the focal length of described ultrasonic transducer and/or described surface of ultrasonic transducer to the distance of skin surface, control submodule with second of the position that obtains determined focal spot.
Further, the shape of described focal spot comprises axial dimension and the lateral dimension of described focal spot, and described control module comprises:
Be used for adjusting the operation wavelength of described ultrasonic transducer and the ratio in focal length and aperture, with the axial dimension that obtains determined focal spot and the 3rd control submodule of lateral dimension.
Embodiments of the invention have following beneficial effect:
In the such scheme, at first obtain the treatment situation in zone to be treated, determine size, position and the shape of the focal spot of ultrasonic transducer according to the treatment situation of obtaining, adjust afterwards the running parameter of ultrasonic transducer, with size, position and the shape that obtains determined focal spot.The present invention can adjust position, the size and shape of focal spot in real time according to the treatment situation in zone to be treated, thereby improves safety and the effectiveness of ultrasonic therapeutic.
Description of drawings
Fig. 1 is the schematic flow sheet of method of work of the ultrasonic fat reducing treatment head of the embodiment of the invention;
Fig. 2 is the structural representation of the ultrasonic fat reducing treatment head of the embodiment of the invention.
The specific embodiment
For technical problem, technical scheme and advantage that embodiments of the invention will be solved is clearer, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
Embodiments of the invention in the prior art when single patient's body part fat deposit varied in thickness is larger, need frequent size, position and the shape that changes focal spot, and the problem of frequent substitution treatment head meeting delay treating time, a kind of ultrasonic fat reducing treatment head and method of work thereof are provided, can adjust in real time position, the size and shape of focal spot, improve safety and the effectiveness of ultrasonic therapeutic.
Fig. 1 is the schematic flow sheet of method of work of the ultrasonic fat reducing treatment head of the embodiment of the invention, and as shown in Figure 1, the present embodiment comprises:
Step 101: the treatment situation of obtaining zone to be treated;
Step 102: size, position and the shape of determining the focal spot of ultrasonic transducer according to the treatment situation of obtaining;
Step 103: adjust the running parameter of ultrasonic transducer, with size, position and the shape that obtains determined focal spot.
The method of work of ultrasonic fat reducing treatment head of the present invention, at first obtain the treatment situation in zone to be treated, determine size, position and the shape of the focal spot of ultrasonic transducer according to the treatment situation of obtaining, adjust afterwards the running parameter of ultrasonic transducer, with size, position and the shape that obtains determined focal spot.The present invention can adjust position, the size and shape of focal spot in real time according to the treatment situation in zone to be treated, thereby improves safety and the effectiveness of ultrasonic therapeutic.
Fig. 2 is the structural representation of the ultrasonic fat reducing treatment head of the embodiment of the invention, and the ultrasonic fat reducing treatment head of the present embodiment comprises a ultrasonic transducer, and as shown in Figure 2, this ultrasonic fat reducing treatment head also comprises:
For the size of the focal spot of determining ultrasonic transducer according to the treatment situation of obtaining and the determination module 21 of position;
Be used for to adjust the running parameter of ultrasonic transducer, with the control module 22 of the size, position and the shape that obtain determined focal spot.
Further, the treatment situation in zone to be treated comprises the fat deposit thickness in zone to be treated, and measurement module 20 comprises:
Be used for to the emission submodule of emission one ultrasound wave burst pulse in zone to be treated;
Be used for obtaining the measurement submodule of the interval between the second ultrasonic echo that the interface layer of first ultrasonic echo of interface layer reflection of coupling liquid and epidermis and fat and muscle reflects;
Be used for interval be multiply by behind the bulk sound velocity of fatty tissue divided by 2, obtain zone to be treated fat deposit thickness obtain submodule.
Further, control module 22 comprises:
Be used for adjusting the focal length of ultrasonic transducer and the ratio in aperture, to obtain the size of determined focal spot; Or
Adjust effective emission area of ultrasonic transducer, with the first control submodule of the size that obtains determined focal spot.
Further, control module 22 comprises:
Be used for to adjust the focal length of ultrasonic transducer and/or surface of ultrasonic transducer to the distance of skin surface, control submodule with second of the position that obtains determined focal spot.
Further, the shape of focal spot comprises axial dimension and the lateral dimension of focal spot, and control module 22 comprises:
Be used for to adjust the operation wavelength of ultrasonic transducer and the ratio in focal length and aperture, with the axial dimension that obtains determined focal spot and the 3rd control submodule of lateral dimension.
Ultrasonic fat reducing treatment head of the present invention, when carrying out ultrasonic fat reducing treatment, at first obtain the treatment situation in zone to be treated, determine size, position and the shape of the focal spot of ultrasonic transducer according to the treatment situation of obtaining, adjust afterwards the running parameter of ultrasonic transducer, with size, position and the shape that obtains determined focal spot.The present invention can adjust position, the size and shape of focal spot in real time according to the treatment situation in zone to be treated, thereby improves safety and the effectiveness of ultrasonic therapeutic.
In the prior art, the spherical surface focusing transducer is the high-intensity focusing ultrasonic transducer of commonly using, and also is one of several ultrasonic transducer structures of focusing efficiency the best.Below just take the spherical surface focusing transducer as example, describe the method for work of ultrasonic fat reducing treatment head in detail.
Step S1: the treatment situation of obtaining zone to be treated;
Before carrying out ultrasonic fat reducing treatment, at first to obtain the treatment situation in zone to be treated, to determine size, position and the shape of needed focal spot according to the treatment situation.The treatment situation of obtaining comprises the fat deposit thickness of location to be treated and the depth that zone to be treated is positioned at fat deposit, particularly, obtain the by the following method step realization of fat deposit thickness of location to be treated: to emission one ultrasound wave burst pulse in zone to be treated; Obtain the interval between the second ultrasonic echo that the interface layer of first ultrasonic echo of interface layer reflection of coupling liquid and epidermis and fat and muscle reflects; Interval be multiply by behind the bulk sound velocity of fatty tissue divided by 2, obtain the fat deposit thickness in zone to be treated.But realize that the fat deposit thickness that obtains location to be treated is not limited to said method, can also pass through skinfold kind of calliper, CT (computed tomography, the electronic computer x-ray tomography)/modes such as MRI (Magnetic Resonance Imaging, nuclear magnetic resonance) radiographic measurement realize;
Step S2: size, position and the shape of determining the focal spot of needed ultrasonic transducer according to the treatment situation in zone to be treated;
After the fat deposit thickness that obtains location to be treated and zone to be treated are positioned at the depth of fat deposit, just can determine to treat focus and be positioned at the subcutaneous degree of depth, the size and shape of focal spot, and select axial length and the lateral length of suitable-6dB focusing spot.Illustrate: conclude a contract or treaty 20 millimeters fat deposit thickness for giving, wish that restriction spherical surface focusing transducer focusing acoustic field-6dB focal spot is along the axial major diameter of sound less than 20 millimeters and suitably leave far and near safe distance (for example-the 6dB major diameter is 10 millimeters, the ultrasonic transducer focus is positioned at the fat deposit centre position).Focal position thinner at fat deposit or the single ultrasonic irradiation is positioned at the shallow table of fat deposit or during near muscle and connective tissue interface, can adopts little focal spot, to guarantee the treatment safety.When focal position thicker at fat deposit and the single ultrasonic irradiation is positioned at fat deposit intermediate depth position, can adopt large focal spot, under the prerequisite that guarantees focus far field and near field safety, to realize single large volume fast treating;
Step S3: adjust the parameters of ultrasonic transducer, with size, position and the shape that obtains determined focal spot.
Particularly, distance that can be by changing ultrasonic transducer and skin, change the ultrasonic transducer focal length, the focusing that changes ultrasonic transducer converges the angle, changes the ultrasonic transducer type of focusing, changes the methods such as frequency that ultrasonic transducer is launched sound wave, changes size, the shape of the subcutaneous focal depth of ultrasonic transducer and/or focal spot region.
The below describes the implementation procedure of the above-mentioned method of mentioning respectively:
(1) ultrasonic fat reducing treatment head is adjusted focal length, aperture and the operation wavelength of ultrasonic transducer to obtain the size and shape of determined focal spot
Scheme one: converge size and the focusing gain that the angle changes the focal spot of ultrasonic transducer by the focusing that changes ultrasonic transducer.
To converge the angle relevant with it for the size of spherical surface focusing transducer focal spot, the spherical surface focusing transducer to converge the angle larger, energy focuses on more concentrated, focal spot is then less, focusing gain is larger, is fit to the meticulous treatment of single irradiation small size; Otherwise, the spherical surface focusing transducer to converge the angle less, then energy focuses on overstepping the bounds of propriety loosely, focal spot is larger, focusing gain is less, is fit to single irradiation large volume fast treating.Therefore, can be by focusing spot is controlled at the angle with realization size and the focusing gain that converge of control spherical surface focusing transducer.
Can control by the effective emission area that changes the spherical surface focusing transducer and converge the angle.Because, the effective emission area that changes the spherical surface focusing transducer can change the equivalent transmitting aperture of spherical surface focusing transducer, thereby be equal to the ratio that changes focal length and aperture, and for the spherical surface focusing transducer, the ratio of focal length and aperture half value (ultrasonic transducer radius) is the sine function that partly converges the angle, therefore, change the equivalent transmitting aperture of spherical surface focusing transducer, can carry out trickle adjustment to converging the angle.
Scheme two: size and focusing gain that the focal length by changing ultrasonic transducer and aperture change the focal spot of ultrasonic transducer.
The fixing focal length of ultrasonic transducer is adjusted the aperture of ultrasonic transducer; Or the focal length of change ultrasonic transducer, the fixedly aperture of ultrasonic transducer; Or adjust simultaneously the focal length of ultrasonic transducer and the aperture obtains different focal length and aperture ratio, change size and the focusing gain of focal spot.
The approach that changes the aperture of ultrasonic transducer can comprise multi-electrode minute annular region excitation ultrasound transducer piezoelectric, adopt sound-absorbing material to stop ultrasonic transducer part area, or adopt many ultrasonic transducers structure by switch wherein some ultrasonic transducers change effective transmitting aperture, and other similar schemes.
Scheme three: by changing the operating frequency of ultrasonic transducer, change size and the focusing gain of focal spot region.
Specific embodiments: for the spherical surface focusing transducer, the ratio in the axial dimension of focal spot and its operation wavelength (being wavelength corresponding to operating frequency) and its focal length and aperture square relevant, the lateral dimension of focal spot is relevant with the ratio in its operation wavelength and focal length and aperture.The ratio in wavelength or focal length and aperture is larger, and the axial dimension of spherical surface focusing transducer and lateral dimension are just larger.Therefore, can pass through to change the operating frequency of spherical surface focusing transducer with the size and shape of control focal spot.
The operating frequency that changes ultrasonic transducer can cooperate suitable power amplifier to realize to the impedance matching of ultrasonic transducer by drive circuit.For the ultrasonic transducer under the broadband work pattern, can be for the suitable high frequency of fat deposit thickness real-time selection or size and the focusing gain of low frequencies signal change focal spot region.
The axial dimension of focal spot and the adjustment of lateral dimension can also be by changing ultrasonic transducer the type of focusing (sphere self-focusing, cylinder self-focusing, axially bend and stretch focusing, transverse compression or stretch focus on) realize.
Further, can also adopt the mode of sound lens focusing, make the effective area for treatment that needs; For example, in order to enlarge the focal spot overlay area of single therapy, adopt the cylinder acoustic lens to cooperate the rectangle plane potsherd to make planar focal zone and can remedy the too small limitation of sphere self-focusing focus; Perhaps adopt multifocal acoustic lens to realize that single emission obtains a plurality of focuses simultaneously.Again for example, change the lens of different curvature radius, converge the angle in the situation that do not change ultrasonic transducer piezoelectric element change focusing, obtain different focus characteristics.
(2) distance of ultrasonic fat reducing treatment head by changing ultrasonic transducer focal length, ultrasonic transducer and skin is to obtain the position of determined focal spot
The treatment target site in zone to be treated often refers to focal position and the focal spot region thereof of ultrasonic transducer.The focal length of ultrasonic transducer refers to that the ultrasonic transducer piezoelectric material surface focuses on the distance of focus to ultrasonic transducer, in typical subcutaneous layer of fat ultrasonic fat reducing treatment, surface of ultrasonic transducer is positioned at the focal length that subcutaneous degree of depth sum equals ultrasonic transducer apart from the distance of skin with the ultrasonic transducer focus.
After definite focal spot is positioned at subcutaneous position, can change the degree of depth for the treatment of target site in fat deposit apart from the distance of epidermis or the mode that changes the focal length of ultrasonic transducer by adjusting ultrasonic transducer.
Scheme one: change the degree of depth for the treatment of target site in fat deposit by the distance that changes transducer and skin
Specific embodiments one: can adopt suitable elastomeric material to make ultrasonic transducer front end coupling liquid capsule, this coupling liquid capsule and ultrasonic transducer coupling liquid road and liquid storage container UNICOM.The seal that keeps ultrasonic transducer water circuit system (coupling liquid capsule, liquid road, liquid storage container), utilize hydraulic principle, adopt suitable hydraulic driving mode (methods such as charge pump, similar needle cylinder injection suction) in liquid storage container, to enter ultrasonic transducer front end coupling liquid capsule to liquid road output liquid, by increasing the purpose that the liquid capsule volume reaches increases the degree of depth for the treatment of target site in fat deposit; Otherwise, can reduce by the coupling liquid in the aspirated liquid capsule liquid capsule volume, reduce to treat the degree of depth of target site in fat deposit.Since the surface tension of liquid each to evenly, it is smooth and smooth that the elastica material can keep in suitable elastic range, is convenient to through ultrasonic energy.
The structure of ultrasonic transducer front end coupling liquid capsule can be isotropic elastic construction (for example mode of balloon harmomegathus), or the elastic construction (for example liquid capsule side adopts rigid material to limit its harmomegathus) that has bounds to limit, or have bounds restriction liquid capsule side to add mechanically-propelled liquid capsule front end face (for example telescope focusing mode), or adopt movable hard supporting construction (for example umbrella opening-closing structure).Owing to the seal of liquid-way system, the change of distance can be calculated by the variation of measuring liquid capacity in the liquid storage container, and information feeds back to the hydraulic-driven maintenance or adjusts this distance accordingly.Adopt the Electromechanical Control method can accurately control the change of liquid capsule volume, and be adapted at adjusting in real time in the therapeutic process.The increase and decrease of liquid CF body also is convenient to dispel the heat to the ultrasonic transducer piezoelectric.
Specific embodiments two: adopt mechanical system, for example manually or motor drive mechanism up and down push-and-pull ultrasonic transducer piezoelectric and encapsulation base station thereof, adjust the ultrasonic transducer piezoelectric in the inner degree of depth of Level Change treatment target site in fat deposit for the treatment of head, the method is also adjusted distance in the suitable treatment in real time.
Specific embodiments three: unite and adopt above-mentioned two kinds of specific embodiments to adjust distance.
Specific embodiments four: adopt solid-state the material of leading of differing heights, for example the acoustic impedance characteristic as couplant, also can change surface of ultrasonic transducer to the distance of skin surface near the hydrogel of tissue.
Scheme two: change the degree of depth for the treatment of target site in fat deposit by changing the ultrasonic transducer focal length.
Specific embodiments one: the sphere curvature radius that changes the ultrasonic transducer piezoelectric is the way that the most directly changes the ultrasonic transducer focal length.Based on the thinking that changes sphere curvature radius, can also adopt the ultrasonic transducer structure of split-type, the folding angle by a plurality of limbs changes focal length; Or adopt the annular ultrasonic transducer using phase control method method to change focal length; Or adopt the method for other similar focusing surface abnormity to change focal length.
Above-mentioned ultrasonic fat reducing treatment head obtains first the treatment situation in zone to be treated, the process of the parameter of rear preferred ultrasonic transducer can the order intersection be carried out in the ultrasonic fat reducing treatment process, or measure first before the treatment and the labelling fat thickness with the variation of position, in treatment subsequently according to the parameter of the preferred ultrasonic transducer of thickness information.
Above ultrasonic fat reducing treatment head is adjusted the method for size, position and the shape of focal spot and is not limited to for the spherical surface focusing transducer, can also be applicable to the structures such as the self-focusing of broad sense sphere, broad sense cylindrical focusing, multi-clove type focusing, Plane Piezoelectric Materials sheet cooperation acoustic lens list focus or multiple-point focusing, polycyclic focusing, phased array list focus or multiple-point focusing.
Except the static therapeutic scheme of above-mentioned ultrasonic fat reducing treatment head, the ultrasonic fat reducing treatment head of the embodiment of the invention can also carry out Active treatment, such as the method continuous sweep area for treatment by the Mechanical Moving ultrasonic transducer, ultrasonic transducer is continuously with specific pulse recurrence frequency emitted energy, in order to promptly change more flexibly focal spot position, focal spot size simultaneously.This scheme may cause several tissue effect, because the bubble cloud effect that closely produces between the adjacent emission focus, a focal position can be by the remaining bubble cloud of emission last time on the next-door neighbour, excite the acoustic cavitation of current location with lower ultrasonic energy, or produce since the enhancing that acoustic cavitation causes organize heat effect, or have concurrently to produce simultaneously and organize heat effect and non-thermomechanical effect.Be equipped with suitable Real Time Monitoring means, next-door neighbour's continuous emitting treatment pattern can utilize still less energy to keep sound cavitation effect in the whole therapeutic process, accelerates treatment speed, shortens treatment time, reaches more uniformly volume therapeutic effect.
Specific implementation can be made relative sliding displacement between patient skin and the treatment head for utilizing the mechanical displacement control system, guarantees that the movement locus (Focal Point Shift track) for the treatment of head covers whole area for treatment.Simultaneously, the ultrasonic transducer in the treatment head adopts preferred acoustic emission parameters (ultrasonic frequency, pulse amplitude, pulse width and pulse recurrence frequency) emission ultrasound wave to treat according to a treatment translational speed and direction.Use ultrasound wave or infrared ray sensor that the acoustic cavitation in the therapeutic process and subcutaneous tissue temperature or real-time ultrasonic image feedback are carried out Real-Time Monitoring, adjust the parameter of next time acoustic emission according to monitoring result.Next treatment position can suitably be adjusted spacing distance (accelerating or the treatment translational speed that slows down) according to cavitation intensity, scope or the variations in temperature size of a upper treatment position, improves the effectively assurance for the treatment of.Other implementations can a treatment built-in control ultrasonic transducer among a small circle mobile the or machinery that swings (modes such as micromotor transmission, hydraulic pressure, pneumatic, spring) realize treating the compound motion of head and ultrasonic transducer, or adopt the phased array mode to replace the built-in travel mechanism of ultrasonic transducer realization focus electronic deflection; Its purpose is to realize flexibly Focal Point Shift mode.Adjust the scheme of focus shift speed and preferred emission parameter in the continuous moving and can optimize the treatment pattern, comprehensively select to should be main or combined effect carries out fat and destroys and treat with mechanical effect or thermal effect.
The above is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. the method for work of a ultrasonic fat reducing treatment head, described ultrasonic fat reducing treatment head comprises a ultrasonic transducer, it is characterized in that, described method of work comprises:
Obtain the treatment situation in zone to be treated;
Determine size, position and the shape of the focal spot of ultrasonic transducer according to the treatment situation of obtaining;
Adjust the running parameter of described ultrasonic transducer, with size, position and the shape that obtains determined focal spot.
2. the method for work of ultrasonic fat reducing treatment head according to claim 1 is characterized in that, the treatment situation in described zone to be treated comprises the fat deposit thickness in zone to be treated, and the described treatment situation of obtaining zone to be treated comprises:
To described emission one ultrasound wave burst pulse in zone to be treated;
Obtain the interval between the second ultrasonic echo that the interface layer of first ultrasonic echo of interface layer reflection of coupling liquid and epidermis and fat and muscle reflects;
Described interval be multiply by behind the bulk sound velocity of fatty tissue divided by 2, obtain the fat deposit thickness in described zone to be treated.
3. the method for work of ultrasonic fat reducing treatment head according to claim 1 is characterized in that, the running parameter of the described ultrasonic transducer of described adjustment comprises with size, position and the shape that obtains determined focal spot:
Adjust the focal length of described ultrasonic transducer and the ratio in aperture, to obtain the size of determined focal spot; Or
Adjust effective emission area of described ultrasonic transducer, to obtain the size of determined focal spot.
4. the method for work of ultrasonic fat reducing treatment head according to claim 1 is characterized in that, the running parameter of the described ultrasonic transducer of described adjustment comprises with size and the position that obtains determined focal spot:
Adjust the focal length of described ultrasonic transducer and/or described surface of ultrasonic transducer to the distance of skin surface, to obtain the position of determined focal spot.
5. the method for work of ultrasonic fat reducing treatment head according to claim 1, it is characterized in that, the shape of described focal spot comprises axial dimension and the lateral dimension of described focal spot, and the running parameter of the described ultrasonic transducer of described adjustment comprises with size and the position that obtains determined focal spot:
Adjust the operation wavelength of described ultrasonic transducer and the ratio in focal length and aperture, with axial dimension and the lateral dimension that obtains determined focal spot.
6. a ultrasonic fat reducing treatment head comprises a ultrasonic transducer, it is characterized in that, described ultrasonic fat reducing treatment head also comprises:
Measurement module for the treatment situation of obtaining zone to be treated;
For the size of the focal spot of determining ultrasonic transducer according to the treatment situation of obtaining and the determination module of position;
Be used for adjusting the running parameter of described ultrasonic transducer, with the control module of the size, position and the shape that obtain determined focal spot.
7. ultrasonic fat reducing treatment head according to claim 6 is characterized in that, the treatment situation in described zone to be treated comprises the fat deposit thickness in zone to be treated, and described measurement module comprises:
Be used for to the emission submodule of described emission one ultrasound wave burst pulse in zone to be treated;
Be used for obtaining the measurement submodule of the interval between the second ultrasonic echo that the interface layer of first ultrasonic echo of interface layer reflection of coupling liquid and epidermis and fat and muscle reflects;
Be used for described interval be multiply by behind the bulk sound velocity of fatty tissue divided by 2, obtain described zone to be treated fat deposit thickness obtain submodule.
8. ultrasonic fat reducing treatment head according to claim 6 is characterized in that, described control module comprises:
Be used for adjusting the focal length of described ultrasonic transducer and the ratio in aperture, to obtain the size of determined focal spot; Or
Adjust effective emission area of described ultrasonic transducer, with the first control submodule of the size that obtains determined focal spot.
9. ultrasonic fat reducing treatment head according to claim 6 is characterized in that, described control module comprises:
Be used for adjusting the focal length of described ultrasonic transducer and/or described surface of ultrasonic transducer to the distance of skin surface, control submodule with second of the position that obtains determined focal spot.
10. ultrasonic fat reducing treatment head according to claim 6 is characterized in that, the shape of described focal spot comprises axial dimension and the lateral dimension of described focal spot, and described control module comprises:
Be used for adjusting the operation wavelength of described ultrasonic transducer and the ratio in focal length and aperture, with the axial dimension that obtains determined focal spot and the 3rd control submodule of lateral dimension.
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