Ultrasonic protection device and ultrasonic focusing treatment system

Abstract

The utility model provides an ultrasonic protection device and an ultrasonic focusing treatment system. The ultrasonic protection device comprises a coupling layer and a sound absorption layer; wherein the coupling layer is provided with a coupling surface capable of being coupled with the skin, and the coupling surface is used for being in contact with the skin; the sound absorption layer is arranged on the side, away from the skin, of the coupling layer, attached to the coupling layer and used for absorbing part of sound waves. By combining the coupling layer and the sound absorption layer, echo ultrasonic waves reflected to the skin can be greatly weakened, so that pain and thermal damage to the skin and subcutaneous tissues in a sound field after the transducer outputs energy can be effectively relieved and prevented, and the treatment safety is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic equipment, and particularly relates to an ultrasonic protection device and an ultrasonic focusing treatment system. Background Art

[0002] At present, High-Intensity Focus Ultrasound (HIFU) has been widely applied in the treatment of solid organs in the body from outside the body due to its advantages such as non-invasiveness and precision. For example, it can be used to treat diseases such as uterine fibroids, liver tumors, osteosarcoma, pancreatic cancer, etc. Specifically, in the process of high-intensity focused ultrasound treatment, under the guidance of medical imaging, low-intensity ultrasound waves outside the body are focused on the target area in the body, so that the target tissue in the target area is rapidly heated up, causing the target tissue to undergo coagulative necrosis under the action of high temperature, while not damaging the surrounding normal tissues.

[0003] However, with the progress of treatment, the non-target tissues in the back field area of the ultrasonic wave tend to heat up under the action of ultrasonic energy, which will cause discomfort to the treated person, and may even cause necrosis of the non-target tissues in the back field, resulting in medical accidents. Summary of the Utility Model

[0004] The utility model aims to solve the problem that ultrasonic energy is likely to accumulate in human tissues in the back field area in the existing ultrasonic treatment, and provides an ultrasonic protection device and an ultrasonic focusing treatment system.

[0005] To achieve the above technical purpose, an embodiment of the utility model provides an ultrasonic protection device, which is applied to an ultrasonic focusing treatment system; it includes:

[0006] A coupling layer, having a coupling surface capable of coupling with the skin, and the coupling surface is used to contact the skin;

[0007] An acoustic absorption layer, arranged on the side of the coupling layer away from the skin and attached to the coupling layer, for absorbing part of the sound waves.

[0008] Optionally, the ultrasonic protection device further includes:

[0009] A housing for accommodating the acoustic absorption layer and the coupling layer; the housing has an opening on the side facing the skin for exposing the surface of the coupling layer.

[0010] Optionally, the coupling layer is composed of coupling gel or water.

[0011] Optionally, the housing is provided with an inlet and an outlet;

[0012] The ultrasonic protection device further includes a liquid inlet pipe, a liquid outlet pipe, and a cooling circulation pool; the liquid inlet pipe is respectively communicated with the inlet and the cooling circulation pool; the liquid outlet pipe is respectively communicated with the outlet and the cooling circulation pool;

[0013] The cooling circulation pool is used to drive the fluid to circulate and cool it.

[0014] Optionally, a sealing structure is provided at the opening edge of the accommodating housing;

[0015] The sealing structure is used to be hermetically connected to the opening edge of the accommodating housing and the skin respectively, so as to seal between the opening edge and the skin.

[0016] Optionally, the ultrasonic protection device further includes a flexible support layer;

[0017] The coupling layer includes a sound-transmitting coupling layer and a coupling filling layer; the sound-transmitting coupling layer is hermetically connected to the periphery of the flexible support layer and can enclose a sealed accommodating space; the accommodating space is used to accommodate the coupling filling layer and the sound-absorbing layer;

[0018] The sound-transmitting coupling layer can be coupled with coupling gel and water; the coupling filling layer is composed of coupling gel or water.

[0019] Optionally, the surface of the sound-absorbing layer facing the coupling layer has a sound-absorbing structure, and the sound-absorbing structure is a plurality of distributed protrusions.

[0020] Optionally, the sound-absorbing layer is made of sound-absorbing material.

[0021] Optionally, the shape of each protrusion in the sound-absorbing structure is one of serrated, conical, frustum-shaped, and cylindrical.

[0022] As another technical solution, the present invention also provides an ultrasonic focusing treatment system, which includes an ultrasonic transducer and the ultrasonic protection device as described above;

[0023] The ultrasonic transducer is used to emit ultrasonic waves and focus on the lesion;

[0024] The ultrasonic protection device is attached to the skin surface in the corresponding area of the ultrasonic back field.

[0025] The present invention has the following beneficial effects:

[0026] The ultrasonic protection device provided by the embodiment of the present utility model includes a coupling layer and an acoustic absorption layer which are stacked on each other. Among them, the coupling layer has a coupling surface capable of coupling with the skin, and the coupling surface is used to contact the skin, so that ultrasonic waves will not be reflected at the junction of the skin and the coupling layer, but will pass through the skin and enter the coupling layer, thereby destroying the interface between the skin and the air, avoiding the reflection of ultrasonic waves under the skin, and avoiding the re-convergence of ultrasonic waves with the skin tissue; the acoustic absorption layer is arranged on the side of the coupling layer away from the skin and is attached to the coupling layer, and is used to absorb part of the sound waves, so that when the ultrasonic waves enter the coupling layer and reach the junction between the coupling layer and the acoustic absorption layer, the ultrasonic waves can be weakened by absorbing the ultrasonic waves, thereby weakening the reflected echo ultrasonic waves. In this way, the ultrasonic protection device provided by the embodiment of the present utility model can greatly weaken the echo ultrasonic waves reflected to the skin by combining the coupling layer and the acoustic absorption layer, thereby effectively reducing and preventing the pain and thermal damage of the skin and subcutaneous tissues in the sound field after the transducer outputs energy, and ensuring the safety of treatment. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the ultrasonic treatment principle in the related art;

[0028] Figure 2 It is a schematic structural diagram of the ultrasonic protection device provided by the embodiment of the present utility model;

[0029] Figure 3 It is a schematic structural diagram of the ultrasonic protection device provided in Embodiment 1;

[0030] Figure 4 It is a schematic diagram of the ultrasonic treatment process using the ultrasonic protection device provided in Embodiment 1;

[0031] Figure 5 It is another schematic structural diagram of the ultrasonic protection device provided in Embodiment 1;

[0032] Figure 6A It is a front view of the ultrasonic protection device provided in Embodiment 2;

[0033] Figure 6B It is a side sectional view of the ultrasonic protection device provided in Embodiment 2;

[0034] Figure 6C It is a three-dimensional view of the ultrasonic protection device provided in Embodiment 2;

[0035] Figure 7 It is a schematic diagram of the ultrasonic treatment process using the ultrasonic protection device provided in Embodiment 2;

[0036] Figure 8 It is a cross-sectional view of the ultrasonic protection device provided in Embodiment 3;

[0037] Figure 9 Schematic diagram of the ultrasonic treatment process of the ultrasonic protection device provided for Application Example 3; Detailed implementation manners

[0038] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0039] It can be understood that the specific embodiments and accompanying drawings described herein are only used to explain the present invention, rather than limiting the present invention.

[0040] It can be understood that, without conflict, the various embodiments of the present invention and the features in the embodiments can be combined with each other.

[0041] It can be understood that for the convenience of description, only the parts related to the embodiments of the present invention are shown in the accompanying drawings of the present invention, and the parts unrelated to the embodiments of the present invention are not shown in the accompanying drawings.

[0042] It can be understood that, without conflict, the functions and steps marked in the flowcharts and block diagrams of the embodiments of the present invention may occur in an order different from that marked in the accompanying drawings.

[0043] It can be understood that the above implementation manners are only exemplary implementation manners adopted to illustrate the principle of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

[0044] As Figure 1 shown, in HIFU treatment, the focus 01 of the ultrasonic wave converges at the lesion 02, the front field 03 of the ultrasonic wave is located between the ultrasonic transducer 07 and the lesion 02, and the ultrasonic wave continues to propagate after convergence and forms an ultrasonic wave back field 04; when the ultrasonic wave in the back field 04 region propagates to the junction of the skin 06 and the air, most of the ultrasonic waves will be reflected and return to the back field 04 region, and the ultrasonic wave and the reflected ultrasonic wave will be superimposed in the back field 04 region, thereby aggravating the ultrasonic energy aggregation in the back field 04 region, and further causing the temperature of the human tissue 05 in the back field 04 region to rise.

[0045] Especially when the position of the lesion 02 is relatively deep, in order to enable ultrasonic waves to reach the deeper lesion 02, it is usually necessary to increase the output power and output energy of the ultrasonic transducer 07. In addition, since the ultrasonic focus 01 is relatively close to the back skin 06, the interface between the focus 01 and the air is relatively close to the skin 06. This will cause the high-energy ultrasonic waves to be reflected at the interface between the skin 06 and the air, resulting in the accumulation of high-energy ultrasonic waves in the back field 04 region, and then causing the temperature of the human tissue 05 in the back field 04 region to rise extremely rapidly. And the excessive temperature of the human tissue 05 will cause the treated person to feel strong nerve stimulation, resulting in the patient being unable to bear it during the treatment and having to terminate the treatment, thereby leading to a decrease in the treatment efficiency. Moreover, the human tissue 05 may also undergo degeneration or necrosis under the action of heat accumulation, thereby producing treatment side effects.

[0046] Currently, in response to the above technical problems, some cooling methods are usually adopted during the HIFU treatment process to avoid excessive temperature of human tissues. Specifically, the related technical solutions usually expose the skin in the back field area to promote heat dissipation of human tissues, and apply ultrasonic waves intermittently to avoid heat accumulation. However, the cooling effect of this cooling method is poor, and it will lead to an extended operation time, and there is still a problem of low treatment efficiency.

[0047] To solve the above technical problems, this embodiment provides an ultrasonic protection device, which can be applied to an ultrasonic focusing treatment system.

[0048] As Figure 2 shown, the ultrasonic protection device includes a coupling layer 1 and an acoustic absorption layer 2. Among them, the coupling layer 1 has a coupling surface capable of coupling with the skin, and the coupling surface is used to contact the skin for acoustic coupling with the skin. Specifically, when a sound wave is incident from one medium to another medium with different acoustic properties, a part of the sound wave will not pass through the interface between the two media but will return to the previous medium, that is, the sound wave undergoes acoustic reflection at the interface between the two media. And the coupling layer 1 proposed in this embodiment can perform acoustic coupling with the skin, that is, the acoustic properties of the coupling layer 1 are consistent with the acoustic properties of the skin, so that the ultrasonic wave will not be reflected at the interface between the skin and the coupling layer 1, but will pass through the skin and enter the coupling layer 1, thereby destroying the interface between the skin and the air, avoiding the reflection of the ultrasonic wave under the skin, and avoiding the convergence of the ultrasonic wave with the skin tissue again. After the ultrasonic wave passes through the coupling layer 1, acoustic reflection will occur at the surface of the coupling layer 1 far from the skin. It can be seen that the coupling surface can move the acoustic reflection surface backward by using its own coupling property with the skin and its own thickness, so that the acoustic reflection surface is far from the skin; moreover, during the propagation of the ultrasonic wave in the coupling layer 1, the ultrasonic wave will attenuate as it propagates. Therefore, by moving the acoustic reflection surface backward, the propagation path of the ultrasonic wave in the coupling layer 1 can be extended, thereby achieving the effect of weakening the ultrasonic wave.

[0049] Moreover, the sound absorption layer 2 is disposed on the side of the coupling layer 1 away from the skin and is attached to the coupling layer 1, and is used to absorb part of the sound wave, so that when the ultrasonic wave propagates to the junction between the coupling layer 1 and the sound absorption layer 2, the ultrasonic wave energy can be weakened by absorbing the ultrasonic wave, thereby further weakening the reflected ultrasonic wave.

[0050] The ultrasonic protection device provided in this embodiment can greatly weaken the ultrasonic wave reflected back to the subcutaneous tissue by combining the coupling layer 1 and the sound absorption layer 2, thereby effectively reducing and preventing the pain and thermal damage caused by the ultrasonic wave energy in the back field area to the skin and subcutaneous tissue, and further ensuring the safety of the treatment.

[0051] Moreover, since the ultrasonic protection device provided in this embodiment can effectively prevent the temperature of the human tissue in the back field from being too high, during the actual treatment process, the ultrasonic transducer 8 can be continuously turned on without intermittently turning on the transducer. It can be seen that compared with the related technical solutions described above, this embodiment can effectively improve the treatment efficiency and shorten the treatment time.

[0052] Furthermore, in some embodiments, the coupling layer 1 may be composed of coupling gel. It should be noted that the "coupling gel" in this application is a commonly used medical ultrasonic coupling agent in the existing ultrasonic treatment technology, and its acoustic properties (including physical properties such as density and elasticity) are very close to those of human soft tissues. Therefore, the acoustic impedance of the coupling gel is close to that of human tissues, and thus when the coupling gel is attached to the skin, acoustic coupling will occur between the two.

[0053] Alternatively, in some embodiments, the coupling layer 1 may also be composed of water. The coupling between water and the skin is also good, so when the surface of the water is attached to the skin, acoustic coupling will occur between the two.

[0054] Moreover, both the coupling gel and water have a high specific heat capacity, so both have good heat absorption capacity, so as to be able to further reduce the heat of the human tissue in the corresponding area by absorbing the heat of the skin, thereby further improving the treatment safety.

[0055] In some embodiments, the above-mentioned sound absorption layer 2 is made of sound absorption material, so that when the ultrasonic wave reaches the sound absorption layer 2, most of the ultrasonic waves can be absorbed by the sound absorption material, and only a small part will be reflected at the interface between the sound absorption layer 2 and the coupling layer 1. In other words, the reflected ultrasonic wave can be weakened.

[0056] In some embodiments, the surface of the sound-absorbing layer 2 facing the opening side has a sound-absorbing structure, and the sound-absorbing structure is a plurality of distributed protrusions, so that the surface of the sound-absorbing layer 2 is an irregular surface, and the directions of ultrasonic waves reflected on the irregular surface are relatively disordered, thereby further reducing the ultrasonic waves reflected back to the human tissue, and further reducing the risk of energy concentration of ultrasonic waves in the human tissue.

[0057] Further, in some embodiments, the shape of each protrusion in the sound-absorbing structure is one of serrated, conical, frustum-shaped, and cylindrical.

[0058] Embodiment 1

[0059] As Figure 3 shown, this embodiment provides an ultrasonic protection device, which includes the coupling layer 1 and the sound-absorbing layer 2 as described above. Further, the ultrasonic protection device proposed in this embodiment further includes a receiving housing 3. The receiving housing 3 is used to accommodate the sound-absorbing layer 2 and the coupling layer 1; specifically, the side of the receiving housing 3 facing the skin has an opening for the surface of the coupling layer 1 to be exposed, so that the coupling layer 1 can be in direct contact with the skin through the opening, thereby using the coupling layer 1 to prevent ultrasonic waves from reflecting at the skin, to avoid ultrasonic waves from converging again in the skin tissue, and to be able to use the coupling layer 1 to absorb the skin heat, thereby further reducing the temperature of the human tissue.

[0060] Moreover, since the action range of HIFU treatment is usually relatively small, the corresponding range of human tissue in the back field is also relatively small. Therefore, the overall receiving housing 3 proposed in this embodiment can be designed to have a relatively small volume, and thus the overall ultrasonic protection device can be made lightweight, and the ultrasonic protection device with a relatively small volume can be flexibly arranged relative to the position of the subject being treated.

[0061] Taking the treatment process as Figure 4 shown as an example, when the subject lies prone on the treatment table, the ultrasonic transducer 8 is located below the subject, and the ultrasonic waves emitted by it propagate from bottom to top. Correspondingly, the back tissue of the subject is in the back field area of the ultrasonic waves. During the treatment process, the opening of the above-mentioned receiving housing 3 can be made to face the skin, so that the receiving housing 3 is buckled on the skin of the back field of the treatment area, thereby using the coupling property of the coupling layer 1 to move up the acoustic reflection surface of the ultrasonic waves, and using the sound-absorbing ability of the sound-absorbing layer 2 to absorb the ultrasonic wave energy, thereby further weakening the reflected echo ultrasonic waves, and further protecting the skin and tissue of the subject's back. Moreover, as described above, the ultrasonic protection device proposed in this embodiment can be made lightweight, so placing it on the back of the subject will not cause the subject to feel a large burden.

[0062] It should be noted that the ultrasonic protection device proposed in this embodiment is not limited to the above placement method, and its positional relationship with the person being treated can be determined according to the actual specific treatment method and treatment location.

[0063] Furthermore, in some embodiments, as Figure 5 shown, a sealing structure 31 is provided at the opening edge of the accommodating housing 3. The sealing structure 31 is used to hermetically connect the opening edge of the accommodating housing 3 and the skin respectively, so as to seal the space between the opening edge and the skin, thereby preventing the leakage of coupling gel or water, which may cause treatment interruption and waste of coupling agent.

[0064] It is easy to understand that the accommodating housing 3 is a rigid and sealed housing, so that when the opening of the accommodating housing 3 is hermetically connected to the skin, the accommodating housing 3 and the skin surface can jointly form a sealed space.

[0065] Exemplarily, as Figure 3 shown, the accommodating housing 3 can be a columnar body with an opening at one end.

[0066] Exemplarily, the sound-absorbing layer 2 completely covers the bottom surface of the accommodating housing 3 to avoid the existence of an interface between the bottom surface of the accommodating housing 3 and the coupling layer 1, thereby preventing the reflection of ultrasonic waves at the junction between the bottom surface of the accommodating housing 3 and the coupling layer 1.

[0067] Exemplarily, the accommodating housing 3 can be made of a rigid sound-absorbing material.

[0068] Exemplarily, the accommodating housing 3 can be made of a transparent material to facilitate the operator to observe the internal situation of the accommodating space.

[0069] Exemplarily, during the manufacturing process of the ultrasonic protection device, the sound-absorbing layer 2 can be formed first and then placed at the bottom of the accommodating housing 3; alternatively, the sound-absorbing layer 2 can also be formed by coating a sound-absorbing coating on the bottom surface of the accommodating housing 3.

[0070] This embodiment also provides a usage method of the above ultrasonic protection device, which includes the following steps:

[0071] S11. First, pour ultrasonic gel or water into the accommodating housing 3 to form the coupling layer 1;

[0072] Specifically, if the coupling gel is used to form the coupling layer 1, the coupling gel can be made to protrude slightly from the opening of the accommodating housing 3 during the process of pouring the coupling gel into the accommodating housing 3, so as to facilitate the tight combination of the coupling gel and the skin;

[0073] S12. Apply coupling gel on the skin in the far field of the therapeutic ultrasound;

[0074] S13. Orient the opening of the accommodating housing 3 towards the skin and press it closely against the skin.

[0075] Embodiment 2

[0076] As Figures 6A to 6C shown, this embodiment provides an ultrasonic protection device, which includes the coupling layer 1, the sound absorption layer 2, and the accommodating housing 3 for accommodating the sound absorption layer 2 and the coupling layer 1 as described above. The side of the accommodating housing 3 facing the skin has an opening for exposing the surface of the coupling layer 1, so that the coupling layer 1 can directly contact the skin through the opening, thereby using the coupling layer 1 to avoid the reflection of ultrasonic waves at the junction of the skin and the coupling layer 1, and to avoid the re-convergence of ultrasonic waves in the skin tissue.

[0077] Moreover, an inlet 32 and an outlet 33 are provided on the accommodating housing 3. The ultrasonic protection device further includes a liquid inlet pipe 4, a liquid outlet pipe 5, and a cooling circulation tank 6. The liquid inlet pipe 4 is respectively connected to the inlet 32 and the cooling circulation tank 6; the liquid outlet pipe 5 is respectively connected to the outlet 33 and the cooling circulation tank 6; the cooling circulation tank 6 is used to drive the fluid to circulate and cool it, so that the coupling gel or water constituting the coupling layer 1 can enter the accommodating housing 3 after being cooled, thereby continuously using the coupling gel or water to absorb the heat of the skin and subcutaneous tissue, and realizing the recycling of the coupling gel and water.

[0078] Taking the treatment process as Figure 7 shown as an example, when the subject lies prone on the treatment table, the ultrasonic transducer 8 is located below the subject, and the ultrasonic waves emitted by it propagate from bottom to top. Correspondingly, the back tissue of the subject is in the back field area of the ultrasonic waves. During the treatment process, the opening of the above-mentioned accommodating housing 3 can be oriented towards the skin, so that the accommodating housing 3 is inverted on the back skin of the treatment area, and the cooling circulation tank 6 is turned on, so that the coupling gel or water continuously flows on the skin surface, thereby using the coupling property of the coupling gel or water to move the acoustic reflection surface of the ultrasonic waves upward, and using the sound absorption ability of the sound absorption layer 2 to absorb the ultrasonic wave energy, thereby further weakening the reflected echo ultrasonic waves; and, by driving the coupling gel or water to circulate on the skin, the heat of the skin can be continuously absorbed, and further, the temperature of the back skin and subcutaneous tissue of the subject can be further avoided from being too high, so as to reduce the safety risk during treatment and improve the treatment experience.

[0079] Exemplarily, the above-mentioned cooling circulation pool 6 may include a fluid pump, a fluid tank, and a cooler. Specifically, the fluid tank communicates with the accommodation housing 3 through the above-mentioned liquid inlet pipe 4 and liquid outlet pipe 5, and is used to accommodate the coupling gel or water. The fluid pump is arranged in the fluid tank and can drive the fluid to flow from the liquid inlet pipe 4 to the liquid outlet pipe 5. The cooler is arranged inside the fluid tank to cool the fluid in the tank; alternatively, the cooler can be connected to the outer wall of the fluid tank to cool the fluid in the tank by cooling the fluid tank wall.

[0080] It should be noted that since the fluidity of the coupling gel is relatively low, if the coupling layer 1 is composed of the coupling gel, the output power of the fluid pump can be increased to promote the flow of the coupling gel.

[0081] Exemplarily, the above-mentioned inlet 32 and outlet 33 are both formed on the side circumference of the accommodation housing 3 to avoid the position of the sound absorption layer 2, so as to ensure the integrity of the sound absorption layer 2 and further avoid interfering with the sound absorption ability of the sound absorption layer 2.

[0082] Furthermore, in some embodiments, a sealing structure 31 is provided at the opening edge of the accommodation housing 3; the sealing structure 31 is used to be hermetically connected to the opening edge of the accommodation housing 3 and the skin respectively to seal between the opening edge and the skin, so as to avoid the leakage of the coupling gel or water, resulting in the interruption of treatment and the waste of the coupling agent.

[0083] Embodiment Three

[0084] As Figure 8 shown, this embodiment provides an ultrasonic protection device, which includes the coupling layer 1 and the sound absorption layer 2 as described above. Further, the coupling layer 1 in this embodiment includes a sound-transmitting coupling layer 11 and a coupling filling layer 12.

[0085] Moreover, the ultrasonic protection device proposed in this embodiment further includes a flexible support layer 7. The flexible support layer 7 is hermetically connected to the periphery of the flexible support layer 7 and can enclose a sealed accommodation space; the accommodation space is used to accommodate the coupling filling layer 12 and the sound absorption layer 2; the sound-transmitting coupling layer 11 can be coupled with the coupling gel and water; the coupling filling layer 12 is composed of the coupling gel or water. In this way, when the coupling filling layer 12 is filled in the accommodation space, the sound-transmitting coupling layer 11 can be acoustically coupled with the coupling filling layer 12. Specifically, as Figure 8 shown, the accommodation space is enclosed by two thin layers, so the space is in the shape of a thin sheet, making the volume of the entire ultrasonic protection device smaller and more portable. Exemplarily, the ultrasonic protection device proposed in this embodiment can be applied to ultrasonic treatment processes with shorter time consumption and can save materials.

[0086] As Figure 9As shown, when using the ultrasonic protection device provided in this embodiment, coupling gel can be pre-coated on the skin surface in the post-treatment ultrasonic field area, and then the sound-transmitting coupling layer 11 is oriented towards the skin and the entire ultrasonic protection device is attached to the skin coated with the coupling gel. In this way, due to the coupling between the sound-transmitting coupling layer 11 and the coupling gel, and the coupling between the sound-transmitting coupling layer 11 and the coupling filling layer 12, no sound reflection occurs at the junction between the sound-transmitting coupling layer 11 and the coupling gel and at the junction between the sound-transmitting coupling layer 11 and the coupling filling layer 12, so that the sound reflection position is far from the skin. Moreover, when the ultrasonic wave propagates to the junction between the coupling filling layer 12 and the sound-absorbing layer 2, the ultrasonic wave energy can be weakened by absorbing the ultrasonic wave, thereby further weakening the reflected echo ultrasonic wave, further reducing the accumulation of ultrasonic wave energy, avoiding overheating of the skin and subcutaneous tissues, reducing the safety risk during the treatment process, and improving the treatment experience.

[0087] It is easy to understand that both the flexible support layer 7 and the sound-transmitting coupling layer 11 are flexible structures. Therefore, the ultrasonic protection device proposed in this embodiment can be easily attached to the skin surface with a large curvature.

[0088] Exemplarily, the sound-transmitting coupling layer 11 can be made of a sound-transmitting thin film. The sound-transmitting thin film is a common medical material with good sound-transmitting performance, which can allow ultrasonic waves to pass through and effectively reduce the occurrence of sound reflection.

[0089] Exemplarily, the flexible support layer 7 is made of a textile or a polymer thin film, which is soft in texture and high in toughness, and can provide structural support for the sound-absorbing layer 2 and the coupling filling layer 12 together with the sound-transmitting coupling layer 11.

[0090] Exemplarily, the sound-absorbing layer 2 can be made by coating a sound-absorbing coating on the side of the flexible support layer 7 facing the sound-transmitting coupling layer 11.

[0091] This embodiment also provides a usage method of the above ultrasonic protection device, which includes the following steps:

[0092] S21. Apply coupling gel on the skin in the post-treatment ultrasonic field;

[0093] S22. Orient the sound-transmitting coupling layer 11 towards the skin and press it tightly against the skin.

[0094] Embodiment 4

[0095] Based on the above-mentioned multiple embodiments, this embodiment provides an ultrasonic focusing treatment system, such as Figure 4 、 Figure 7 and Figure 9As shown in the figure, it includes an ultrasonic transducer 8 and the ultrasonic protection device as described above. Specifically, the ultrasonic transducer 8 is used to emit ultrasonic waves and focus them on the lesion site to eliminate the lesion by using the high energy generated by ultrasonic focusing. The ultrasonic protection device is attached to the skin surface in the corresponding area of the ultrasonic far field to protect the skin and subcutaneous tissue in the corresponding area, thereby improving the treatment safety while enhancing the ultrasonic treatment efficiency.

[0096] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention. However, the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims

1. An ultrasonic protection device, which is applied to an ultrasonic focusing treatment system; characterized in that, Comprising: A coupling layer having a coupling surface capable of coupling with the skin, the coupling surface being for contacting the skin; An acoustic absorption layer provided on the side of the coupling layer away from the skin and attached to the coupling layer for absorbing part of the sound waves.

2. The ultrasonic protection device according to claim 1, wherein, Further comprising: A containing housing for containing the acoustic absorption layer and the coupling layer; the side of the containing housing facing the skin has an opening for exposing the surface of the coupling layer.

3. The ultrasonic protection device according to claim 2, wherein The coupling layer is composed of coupling gel or water.

4. The ultrasonic protection device according to claim 3, characterized in that An inlet and an outlet are formed on the containing housing; The ultrasonic protection device further comprises a liquid inlet pipe, a liquid outlet pipe and a cooling circulation pool; the liquid inlet pipe is respectively communicated with the inlet and the cooling circulation pool; the liquid outlet pipe is respectively communicated with the outlet and the cooling circulation pool; The cooling circulation pool is used for driving the fluid to circulate and cooling it.

5. The ultrasonic protection device according to claim 2 or 4, characterized in that, A sealing structure is provided at the opening edge of the containing housing; The sealing structure is used for respectively sealingly connecting with the opening edge of the containing housing and the skin to seal between the opening edge and the skin.

6. The ultrasonic protection device according to claim 1, wherein, Further comprising a flexible support layer; The coupling layer comprises a sound-transmitting coupling layer and a coupling filling layer; the sound-transmitting coupling layer is hermetically connected to the periphery of the flexible support layer and can enclose a sealed accommodation space; The accommodation space is for accommodating the coupling filling layer and the acoustic absorption layer; The sound-transmitting coupling layer can be coupled with coupling gel and water; the coupling filling layer is composed of coupling gel or water.

7. The ultrasonic protection device according to claim 1, characterized in that, The surface of the acoustic absorption layer facing the coupling layer has an acoustic absorption structure, and the acoustic absorption structure is a plurality of distributed protrusions.

8. The ultrasonic protection device according to claim 1 or 7, characterized in that, The acoustic absorption layer is made of an acoustic absorption material.

9. The ultrasonic protection device according to claim 7, wherein, The shape of each protrusion in the acoustic absorption structure is one of serrated, conical, frustum-shaped and cylindrical.

10. An ultrasonic focusing treatment system, characterized in that, Comprising an ultrasonic transducer and the ultrasonic protection device according to any one of claims 1-9; The ultrasonic transducer is used for emitting ultrasonic waves and focusing on the lesion site; The ultrasonic protection device is attached to the skin surface in the corresponding area of the ultrasonic back field.

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