An ultrasonic treatment head and an ultrasonic treatment apparatus

Abstract

This invention discloses an ultrasonic therapy head and an ultrasonic therapy device, comprising: a housing with an acoustic window; a cover assembly disposed within the housing, forming a sealed first liquid cavity between the cover assembly, the inner wall of the housing, and the acoustic window, the first liquid cavity being filled with a sound-conducting liquid; a transmission component disposed on the cover assembly; a transducer disposed within the first liquid cavity, with the sound-emitting part of the transducer and the acoustic window being oppositely disposed; air bubbles in the first liquid cavity can pass through the transmission component to expel air bubbles from the first liquid cavity; and / or, water molecules within the outer shell of the first liquid cavity can permeate into the first liquid cavity through the transmission component. By using the transmission component, air bubbles in the first liquid cavity are expelled, avoiding their influence on sound wave transmission, resulting in an ideal therapeutic effect; by using the transmission component, water molecules permeate into the first liquid cavity through the transmission component, causing a decrease in acoustic impedance, offsetting the increase in sound velocity impedance caused by temperature rise, resulting in an ideal therapeutic effect.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an ultrasonic therapy head and an ultrasonic therapy device. Background Technology

[0002] An ultrasonic therapy head is the component in an ultrasonic therapy device that directly contacts the human body and emits ultrasonic waves to achieve therapeutic purposes. It typically consists of a piezoelectric transducer, a matching layer, a focusing element, and a housing. Its working principle utilizes the inverse piezoelectric effect of the piezoelectric transducer to convert electrical energy into mechanical energy, generating high-frequency ultrasonic waves. These waves are then focused or diffused by a focusing element, allowing them to accurately target specific areas of the body. By leveraging the mechanical, thermal, and cavitation effects of the ultrasonic waves, therapeutic effects such as promoting blood circulation, relieving pain, releasing adhesions, and promoting tissue repair and regeneration are achieved.

[0003] Ultrasonic therapy heads have proven effective in treating diseases across various departments, including rehabilitation therapy, obstetrics and gynecology, and oncology. However, traditional ultrasonic therapy heads require the injection of a sound-conducting liquid into their cavity before assembly. Because this liquid contains dissolved gas, even if the gas is completely removed during assembly, gas will still be released after the finished product has been left for a period of time, leading to air bubbles within the cavity. This affects sound energy transmission and results in poor treatment efficacy. Furthermore, after a period of use, the temperature of the liquid within the cavity of traditional ultrasonic therapy heads tends to rise. This increased temperature leads to changes in acoustic impedance, resulting in increased sound energy reflection during treatment and reduced energy transmitted to the tissue, further impacting the treatment outcome. Summary of the Invention

[0004] In view of this, the present invention provides an ultrasonic treatment head, which achieves ideal treatment results through the arrangement of the transmission components.

[0005] The present invention also provides an ultrasonic therapy device including the above-described ultrasonic therapy head.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An ultrasonic treatment head includes: a housing, wherein the housing is provided with an acoustic window;

[0008] A cover plate assembly is disposed within the housing, and a sealed first liquid cavity is formed between the cover plate assembly, the inner wall of the housing, and the sound-permeable window, the first liquid cavity being filled with a sound-conducting liquid;

[0009] A transmission component, the transmission component being disposed on the cover plate assembly;

[0010] A transducer is disposed in the first liquid cavity, and the sound-emitting part of the transducer is disposed opposite to the sound-transmitting window;

[0011] Wherein, air bubbles in the first liquid cavity can pass through the transmission component to remove air bubbles from the first liquid cavity; and / or, water molecules in the shell outside the first liquid cavity can permeate into the first liquid cavity through the transmission component.

[0012] Preferably, the cover plate assembly includes: a lower cover plate and an upper cover plate;

[0013] A sealed first liquid cavity is formed between the lower cover plate, the inner wall of the housing, and the sound-permeable window; a sealed second liquid cavity is formed between the lower cover plate, the inner wall of the housing, and the upper cover plate, and the second liquid cavity is filled with sound-conducting liquid.

[0014] Preferably, the air bubbles in the first liquid chamber can pass through the transmission component;

[0015] The transmission component includes: a breathable and waterproof membrane;

[0016] The lower cover plate has a through hole, and the opening area of ​​the through hole is covered by the breathable and waterproof membrane to discharge air bubbles in the first liquid cavity to the second liquid cavity.

[0017] Preferably, the lower cover plate portion protrudes upward to form a protrusion, and the protrusion forms the through hole.

[0018] Preferably, the transmission component includes: a one-way valve;

[0019] The one-way valve is disposed on the lower cover plate to guide the acoustic liquid in the second liquid chamber into the first liquid chamber.

[0020] Preferably, the air bubbles in the first liquid chamber can pass through the transmission component;

[0021] The transmission component includes: a one-way valve;

[0022] The one-way valve is disposed on the lower cover plate to discharge air bubbles from the first liquid chamber to the second liquid chamber.

[0023] Preferably, the number of the one-way valves is at least two, and both are disposed on the lower cover plate;

[0024] The one-way valve has an opening, one of which faces the first liquid chamber and is used to discharge air bubbles in the first liquid chamber to the second liquid chamber; the other one-way valve has an opening facing the second liquid chamber and is used to guide the sound-conducting liquid in the second liquid chamber into the first liquid chamber.

[0025] Preferably, the transmission component further includes: a micro pump;

[0026] The micro pump has an inlet and an outlet, with the inlet located in the second liquid chamber and the outlet located in the first liquid chamber, to deliver the sound-conducting liquid from the second liquid chamber to the first liquid chamber.

[0027] Preferably, water molecules inside the shell outside the first liquid cavity can permeate into the first liquid cavity through the transmission component;

[0028] The density of the sound-conducting liquid in the second liquid chamber is equal to or greater than the density of the sound-conducting liquid in the first liquid chamber, and the density of the sound-conducting liquid in the first liquid chamber is greater than the density of pure water. The second liquid chamber is also filled with gas. The transmission component includes a reverse osmosis element.

[0029] The lower cover plate has a through hole, and the opening area of ​​the through hole is covered with a reverse osmosis element so that water molecules in the second liquid chamber can permeate into the first liquid chamber through the reverse osmosis element.

[0030] Preferably, the reverse osmosis element is a reverse osmosis membrane.

[0031] Preferably, the cover plate assembly further includes: a side plate, wherein the lower cover plate, the upper cover plate, and the side plate form a cavity shell, and the inner wall of the cavity shell forms the second liquid cavity; wherein the side of the side plate away from the second liquid cavity is attached to the inner wall of the shell.

[0032] An ultrasound therapy device includes: the ultrasound therapy head described above.

[0033] As can be seen from the above technical solution, the ultrasonic treatment head provided by this invention can eliminate air bubbles in the first liquid cavity through the setting of the transmission component, avoiding the influence of air bubbles on the transmission of high-frequency ultrasound, thus achieving ideal treatment results. Through the setting of the transmission component, water molecules can penetrate into the first liquid cavity through the transmission component, resulting in a decrease in the density of the sound-conducting liquid in the first liquid cavity, causing a decrease in acoustic impedance. The increase in sound velocity due to the increase in temperature and the decrease in acoustic impedance due to the decrease in density cancel each other out and achieve a balance, that is, adaptive acoustic impedance matching is achieved, resulting in ideal treatment results.

[0034] The present invention also provides an ultrasonic therapy device, which has corresponding beneficial effects due to the use of the above-mentioned ultrasonic therapy head, as can be referred to the foregoing description, and will not be repeated here. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of an embodiment of the ultrasonic treatment head provided in this invention;

[0037] Figure 2 These are schematic diagrams of two embodiments of the ultrasonic treatment head provided in this invention.

[0038] Figure 3 These are schematic diagrams of three embodiments of the ultrasonic treatment head provided in this invention.

[0039] Figure 4 These are schematic diagrams of four embodiments of the ultrasonic treatment head provided in this invention.

[0040] The meanings of the various reference numerals in the figure are as follows:

[0041] 10 is the shell, 11 is the soundproof window, 12 is the outer shell, and 13 is the inner shell;

[0042] 20 is the cover plate assembly, 21 is the lower cover plate, 22 is the upper cover plate, and 23 is the side plate;

[0043] 30 is the first liquid chamber; 40 is the transducer; 50 is the second liquid chamber;

[0044] 61 is a breathable and waterproof membrane, 62 is a one-way valve, 63 is a micro pump, and 64 is a reverse osmosis membrane;

[0045] 70 is the cavity shell. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] The ultrasonic treatment head provided in this embodiment of the invention includes:

[0048] Housing 10, housing 10 is provided with a sound-transmitting window 11, such as Figure 1 and Figure 3 As shown.

[0049] The cover plate assembly 20 is disposed inside the housing 10. A first liquid cavity 30 is formed between the cover plate assembly 20, the inner wall of the housing 10, and the sound-transmitting window 11. The first liquid cavity 30 is filled with a sound-conducting liquid.

[0050] The transmission component is disposed on the cover plate assembly 20.

[0051] The transducer 40 is disposed in the first liquid chamber 30, and the sound-emitting part of the transducer 40 is disposed opposite to the sound-transmitting window 11.

[0052] Among them, air bubbles in the first liquid chamber 30 can be expelled through the transmission component; and / or, water molecules in the outer shell 10 of the first liquid chamber 30 can permeate into the first liquid chamber 30 through the transmission component.

[0053] In the above technical solution, the basic principle is as follows: This ultrasonic treatment head utilizes the inverse piezoelectric effect of the transducer 40 to convert electrical energy into mechanical energy, generating high-frequency ultrasonic waves. These high-frequency ultrasonic waves pass through the acoustic window 11 and are then accurately applied to specific parts of the human body. The advantages of this solution are: First, compared with existing technologies (where air bubbles appear in traditional ultrasonic treatment heads, affecting the transmission of high-frequency ultrasonic waves and resulting in poor treatment effects), this technical solution, through the design of the transmission component, can eliminate air bubbles in the first liquid cavity 30, avoiding their impact on the transmission of high-frequency ultrasonic waves and resulting in ideal treatment effects. Second, compared with existing technologies (where the temperature of the acoustic-conducting liquid in a traditional ultrasonic treatment head increases after a period of use, leading to an increase in acoustic impedance and affecting treatment effects), through the design of the transmission component, water molecules can penetrate into the first liquid cavity 30, causing a decrease in the density of the acoustic-conducting liquid within the first liquid cavity 30, resulting in a decrease in acoustic impedance. The increase in acoustic velocity due to temperature increase and the decrease in acoustic impedance due to density decrease cancel each other out, achieving a balance, i.e., achieving adaptive acoustic impedance matching, resulting in ideal treatment effects.

[0054] The above-mentioned technical solution is optimized, and the cover plate assembly 20 includes: a lower cover plate 21 and an upper cover plate 22, such as... Figure 1 and Figure 2 As shown.

[0055] A sealed first liquid cavity 30 is formed between the lower cover plate 21, the inner wall of the housing 10, and the sound-transmitting window 11; a sealed second liquid cavity 50 is formed between the lower cover plate 21, the inner wall of the housing 10, and the upper cover plate 22, and the second liquid cavity 50 is filled with sound-conducting liquid.

[0056] In the above technical solution, since the first liquid cavity 30 is located below the second liquid cavity 50, the bubbles are discharged into the second liquid cavity 50 through the transmission component under the action of gravity, so as to remove the bubbles in the first liquid cavity 30; in addition, since the second liquid cavity 50 is also filled with sound-conducting liquid, the water molecules in the second liquid cavity 50 can penetrate into the first liquid cavity 30 through the transmission component to achieve adaptive acoustic impedance matching.

[0057] Further optimization of the above technical solutions, such as Figure 1 As shown, the air bubbles in the first liquid chamber 30 can pass through the transmission component.

[0058] The transmission component includes: a breathable and waterproof membrane 61.

[0059] The lower cover plate 21 has a first through hole, and the opening area of ​​the through hole is covered with a breathable and waterproof membrane 61 to discharge the air bubbles in the first liquid chamber 30 to the second liquid chamber 50 (that is, the air bubbles in the first liquid chamber 30 are discharged into the second liquid chamber 50 through the breathable and waterproof membrane 61).

[0060] In the above technical solution, the breathable and waterproof membrane 61 only allows gas molecules to pass through, while water molecules cannot pass through. When the molecules diffuse freely, the bubbles in the first liquid cavity 30 will gradually enter the second liquid cavity 50, thereby preventing bubbles from appearing in the first liquid cavity 30.

[0061] To further optimize the above technical solution, the lower cover plate 21 protrudes upward to form a raised part, and the raised part forms a through hole. In this way, the lower part of the through hole is a groove relative to the first liquid cavity 30. The air bubble will float to the groove under the action of gravity, and the liquid in the second liquid cavity 50 will squeeze the air bubble, promoting the air bubble to permeate the waterproof membrane 61.

[0062] In one embodiment, the transmission component includes a one-way valve 62 (in this embodiment, the one-way valve 62 has a liquid guiding function).

[0063] A one-way valve 62 is provided on the lower cover plate 21 to guide the sound-conducting liquid in the second liquid chamber 50 into the first liquid chamber 30.

[0064] In the above scheme, the breathable and waterproof membrane 61 discharges the air bubbles in the first liquid chamber 30 to the second liquid chamber 50, and the one-way valve 62 guides the liquid in the second liquid chamber 50 into the first liquid chamber 30. This can make the air pressure in the first liquid chamber 30 and the second liquid chamber 50 equal, promote smooth exhaust, and thus effectively prevent air bubbles from being blocked under the breathable and waterproof membrane 61 due to pressure imbalance.

[0065] In an alternative embodiment, air bubbles within the first liquid chamber 30 can pass through the transport component.

[0066] like Figure 4As shown, the transmission component includes: a one-way valve 62 (in this embodiment, the one-way valve 62 has an exhaust function).

[0067] A one-way valve 62 is provided on the lower cover plate 21 to discharge air bubbles in the first liquid chamber 30 to the second liquid chamber 50.

[0068] In the above scheme, the one-way valve 62, as a standard component, helps to reduce costs and has a simple structure and high reliability.

[0069] Optimize the above technical solutions, such as Figure 4 As shown, there are at least two one-way valves 62, and both are located on the lower cover plate 21.

[0070] One-way valve 62 has an opening facing the first liquid chamber 30, for discharging air bubbles from the first liquid chamber 30 to the second liquid chamber 50 (e.g., Figure 4 The upward-pointing arrow on the left indicates the direction of bubble discharge; another one-way valve 62, with its opening facing the second liquid chamber 50, is used to guide the sound-conducting liquid in the second liquid chamber 50 into the first liquid chamber 30 (e.g., Figure 4 The downward arrow on the right indicates the direction of water flow; preferably, the one-way valve 62 has a V-shaped structure, with the V-shaped opening of one one-way valve 62 facing the first liquid chamber 30 and the V-shaped opening of the other one-way valve 62 facing the second liquid chamber 50.

[0071] In the above technical solution, a one-way valve 62 is used to remove air bubbles from the first liquid chamber 30, and another one-way valve 62 is used to guide the liquid in the second liquid chamber 50 into the first liquid chamber 30. This can promote the pressure balance between the first liquid chamber 30 and the second liquid chamber 50. If air bubbles are released in the first liquid chamber 30, it will be easier for them to be discharged into the second liquid chamber 50.

[0072] In an alternative embodiment, such as Figure 4 As shown, in order to balance the pressure of the first liquid chamber 30 and the second liquid chamber 50 during operation, the transmission component also includes a micro pump 63.

[0073] The micro pump 63 has an inlet and an outlet. The inlet is located in the second liquid chamber 50 and the outlet is located in the first liquid chamber 30, so as to deliver the sound-conducting liquid from the second liquid chamber 50 to the first liquid chamber 30.

[0074] In the above technical solution, the micro pump 63 transports the sound-conducting liquid, preventing bubbles from being discharged from the first liquid chamber 30 to the second liquid chamber 50 through the one-way valve 62, which would cause a pressure imbalance between the two. In addition, in another embodiment, there are two one-way valves 62, one for discharging bubbles from the first liquid chamber 30 to the second liquid chamber 50, and the other for guiding the liquid in the second liquid chamber 50 into the first liquid chamber 30. In this way, when the main unit is not powered on and the micro pump is not powered, the pressure balance can be achieved by using the two one-way valves 62, which promotes the entry of bubbles into the second liquid chamber 50.

[0075] In an alternative embodiment, such as Figure 2 As shown, water molecules inside the outer shell 10 of the first liquid chamber 30 can penetrate into the first liquid chamber 30 through the transmission component.

[0076] The density of the sound-conducting liquid in the second liquid chamber 50 is equal to or greater than the density of the sound-conducting liquid in the first liquid chamber 30, and the density of the sound-conducting liquid in the first liquid chamber 30 is greater than the density of pure water. The second liquid chamber 50 is also filled with gas. The transmission component includes a reverse osmosis element, with the permeation direction as follows: Figure 2 The arrow points to.

[0077] The lower cover plate 21 has a through hole, and the opening area of ​​the through hole is covered with a reverse osmosis element so that water molecules in the second liquid chamber 50 can permeate into the first liquid chamber 30 through the reverse osmosis element.

[0078] In the above technical solution, the principle of increased acoustic impedance is as follows: After the ultrasonic treatment head has been used for a period of time, the temperature of the liquid inside the cavity will increase. As the temperature rises, the acoustic impedance of the sound-conducting liquid will increase by 5-10%. In the actual application of this technical solution, after the ultrasonic treatment head has been used for a period of time, the temperature of both the first liquid cavity 30 and the second liquid cavity 50 will rise. Since the expansion rate of the sound-conducting liquid is much lower than that of a gas (preferably air), the pressure inside the second liquid cavity 50 will be higher than that in the first liquid cavity 30. Because the reverse osmosis membrane only allows water molecules to pass through, the high pressure in the second liquid cavity 50 will cause water molecules in the second liquid cavity 50 to flow into the first liquid cavity 30, thereby causing a decrease in the liquid density in the first liquid cavity 30. This is due to the increased acoustic impedance of the liquid. = ,in For the density of the liquid, For liquid sound velocity, generally speaking, as density decreases, sound velocity also decreases. The aforementioned temperature increase leads to an increase in acoustic impedance, and simultaneously causes a decrease in density in the first liquid cavity 30, which in turn causes a decrease in acoustic impedance. The increase in sound velocity due to temperature and the decrease in acoustic impedance due to density cancel each other out, achieving a balance, thus realizing adaptive acoustic impedance matching. It should be noted that the thermal conductivity between the first liquid cavity 30 and the second liquid cavity 50 is good. Preferably, the sound-conducting liquid is a salt-containing sound-conducting liquid, and salt ions cannot pass through the reverse osmosis element. This rule also applies to salt water (the acoustic impedance of water increases by 5-10% with increasing temperature). It should be noted that... Figure 2 The black portion represents the acoustic liquid, and the white portion between the black portion and the upper cover plate 22 represents the gas. It should be noted that the reverse osmosis component can enable water molecules of the acoustic liquid (high density) in the second liquid chamber 50 to permeate into the acoustic liquid (low density) in the first liquid chamber 30 under the action of density difference and pressure. Of course, when the density of the acoustic liquid in the second liquid chamber 50 is equal to that in the first liquid chamber 30, water molecules of the acoustic liquid in the second liquid chamber 50 can also permeate into the acoustic liquid in the first liquid chamber 30 through pressure. The pressure mentioned above is provided by pressure (when this ultrasonic treatment head is working, the pressure in the second liquid chamber 50 is greater than the pressure in the first liquid chamber 30 because there is gas in the second liquid chamber 50).

[0079] Optimize the above technical solutions, such as Figure 2 As shown, the reverse osmosis component is a reverse osmosis membrane 64, which allows the high-density acoustic-conducting liquid in the second liquid chamber 50 to permeate into the low-density acoustic-conducting liquid in the first liquid chamber 30. Furthermore, the reverse osmosis membrane 64 is a standard component, which helps reduce costs.

[0080] In one embodiment, the transmission component includes a reverse osmosis element and a breathable and waterproof membrane 61, which are independently configured.

[0081] In one embodiment, such as Figure 1 and Figure 2 As shown, the cover plate assembly 20 further includes: a side plate 23, a lower cover plate 21, an upper cover plate 22 and the side plate 23 forming a cavity shell 70, and the inner wall of the cavity shell 70 forming a second liquid cavity 50; wherein, the side of the side plate 23 away from the second liquid cavity 50 is attached to the inner wall of the shell 10; preferably, the number of side plates 23 is at least two.

[0082] In the above technical solution, this arrangement can make the structure of the cavity shell 70 stable and firm, thereby ensuring the airtightness of the second liquid cavity 50; preferably, the cavity shell 70 is an integrally molded part, and the side plate 23 and the inner wall of the shell 10 are sealed and fitted together.

[0083] In one embodiment, the main components of the sound-conducting liquid are water (as a solvent) and a solute. The solute can be a neutral salt, such as sodium chloride, potassium chloride, calcium chloride, etc.; the solute can also be an antifreeze component, such as ethylene glycol, glycerol, etc.; the solute can also be a pigment, such as caramel coloring, carmine, etc. The specific components of the sound-conducting liquid can be formulated according to the actual scheme. For example, the density of the sound-conducting liquid obtained by different component ratios may be greater than or less than that of pure water.

[0084] This invention also provides an ultrasound therapy device, including an ultrasound therapy head as described above. Because this solution employs the above-described method, it possesses corresponding beneficial effects, as detailed in the preceding description, which will not be repeated here.

[0085] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features.

[0086] The following is a further description of this solution with reference to specific embodiments:

[0087] In this technical solution, the aforementioned one-way valve 62, breathable and waterproof membrane 61, reverse osmosis membrane 64, and micro pump 63 can be used in combination. For example, one-way valve 62 + breathable and waterproof membrane 61 can balance the pressure of the first liquid chamber 30 and the second liquid chamber 50; breathable and waterproof membrane 61 + reverse osmosis membrane 64 can both remove air bubbles and achieve adaptive acoustic impedance matching; micro pump 63 + reverse osmosis membrane 64 can change the chamber pressure and promote water molecule permeation through the reverse osmosis membrane, etc. These combinations can be incorporated into the protection point. The breathable and waterproof membrane 61 can be made of ePTFE, Tyvek, PU, ​​TPU, etc.; the reverse osmosis membrane 64 can be made of RO membrane, PA membrane, CA membrane, etc.; furthermore, the shell 10 is composed of an outer shell 12 and an inner shell 13, such as... Figure 1 and Figure 2 As shown.

[0088] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0089] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultrasonic therapy head, characterized in that, include: The housing (10) is provided with a sound-transmitting window (11). A cover plate assembly (20) is disposed inside the housing (10). A sealed first liquid cavity (30) is formed between the cover plate assembly (20), the inner wall of the housing (10), and the sound-permeable window (11). The first liquid cavity (30) is filled with a sound-conducting liquid. A transmission component, which is disposed on the cover plate assembly (20); A transducer (40) is disposed in the first liquid cavity (30), and the sound-emitting part of the transducer (40) and the sound-transmitting window (11) are disposed opposite to each other. Wherein, air bubbles in the first liquid cavity (30) can pass through the transmission component to remove air bubbles in the first liquid cavity (30); and / or, water molecules in the shell (10) outside the first liquid cavity (30) can permeate into the first liquid cavity (30) through the transmission component.

2. The ultrasonic treatment head according to claim 1, characterized in that, The cover plate assembly (20) includes: a lower cover plate (21) and an upper cover plate (22); A sealed first liquid cavity (30) is formed between the lower cover plate (21), the inner wall of the housing (10) and the sound-permeable window (11); a sealed second liquid cavity (50) is formed between the lower cover plate (21), the inner wall of the housing (10) and the upper cover plate (22), and the second liquid cavity (50) is filled with sound-conducting liquid.

3. The ultrasonic treatment head according to claim 2, characterized in that, The air bubbles in the first liquid chamber (30) can pass through the transmission component; The transmission component includes: a breathable and waterproof membrane (61). The lower cover plate (21) has a through hole, and the opening area of ​​the through hole is covered by the breathable and waterproof membrane (61) to discharge the air bubbles in the first liquid cavity (30) to the second liquid cavity (50).

4. The ultrasonic treatment head according to claim 3, characterized in that, The lower cover plate (21) protrudes upward to form a protrusion, and the protrusion forms the through hole.

5. The ultrasonic treatment head according to claim 3, characterized in that, The transmission component includes: a one-way valve (62); The one-way valve (62) is disposed on the lower cover plate (21) to guide the acoustic liquid in the second liquid chamber (50) into the first liquid chamber (30).

6. The ultrasonic treatment head according to claim 2, characterized in that, The air bubbles in the first liquid chamber (30) can pass through the transmission component; The transmission component includes: a one-way valve (62); The one-way valve (62) is disposed on the lower cover plate (21) to discharge the air bubbles in the first liquid chamber (30) to the second liquid chamber (50).

7. The ultrasonic treatment head according to claim 6, characterized in that, The number of one-way valves (62) is at least two, and both are disposed on the lower cover plate (21); The one-way valve (62) has an opening, one of the openings of the one-way valve (62) facing the first liquid chamber (30) for discharging the air bubbles in the first liquid chamber (30) to the second liquid chamber (50); the other one-way valve (62) has an opening facing the second liquid chamber (50) for guiding the sound-conducting liquid in the second liquid chamber (50) into the first liquid chamber (30).

8. The ultrasonic treatment head according to claim 6, characterized in that, The transmission component also includes: a micro pump (63); The micro pump (63) has an inlet and an outlet, the inlet being located in the second liquid chamber (50) and the outlet being located in the first liquid chamber (30) to deliver the sound-conducting liquid from the second liquid chamber (50) to the first liquid chamber (30).

9. The ultrasonic treatment head according to any one of claims 2-8, characterized in that, Water molecules inside the shell (10) outside the first liquid cavity (30) can permeate into the first liquid cavity (30) through the transmission component; The density of the sound-conducting liquid in the second liquid chamber (50) is equal to or greater than the density of the sound-conducting liquid in the first liquid chamber (30), and the density of the sound-conducting liquid in the first liquid chamber (30) is greater than the density of pure water. The second liquid chamber (50) is also filled with gas. The transmission component includes: a reverse osmosis component. The lower cover plate (21) has a through hole, and the opening area of ​​the through hole is covered by the reverse osmosis element so that water molecules in the second liquid chamber (50) can permeate into the first liquid chamber (30) through the reverse osmosis element.

10. The ultrasonic treatment head according to claim 9, characterized in that, The reverse osmosis element is a reverse osmosis membrane (64).

11. The ultrasonic treatment head according to claim 2, characterized in that, The cover plate assembly (20) further includes: a side plate (23), the lower cover plate (21), the upper cover plate (22) and the side plate (23) form a cavity shell (70), and the inner wall of the cavity shell (70) forms the second liquid cavity (50); wherein, the side of the side plate (23) away from the second liquid cavity (50) is attached to the inner wall of the housing (10).

12. An ultrasound therapy device, characterized in that, include: The ultrasonic treatment head as described in any one of claims 1-11.

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