Magnetic therapeutic apparatus

Abstract

A magnetic therapeutic apparatus disclosed by the present invention comprises a shell, a first therapeutic head, a second therapeutic head, a third therapeutic head and a fourth therapeutic head, the shell comprises a first shell, a second shell and a third shell, the first shell, the second shell and the third shell are all arc-shaped structures, two ends of the first shell are respectively connected with the second shell and the third shell, and the fourth shell is connected with the second shell. The first shell is arranged in the middle of the second shell to define a wearing cavity for being worn on the head of a patient, the first treatment head is fixedly installed on the first shell and located between the two ends of the first shell, the second treatment head is located at the joint of the first shell and the second shell, and the two third treatment heads are slidably installed at the two ends of the second shell and located between the two ends of the second shell. The two fourth treatment heads are installed at the two ends of the third shell in a sliding mode, and the first treatment head, the second treatment head, the third treatment head and the fourth treatment heads are all provided with treatment ends located in the wearing cavity. The device can adapt to different head types, and the accuracy in the aspect of acupoint positioning is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of health physiotherapy equipment, in particular to a magnetic therapeutic instrument. BACKGROUND

[0002] The magnetic therapeutic instrument is a brain disease physical therapy equipment designed based on the principle of alternating electric field, which can directly act on the head. The equipment breaks through the technical bottleneck that traditional physical therapy factors are difficult to penetrate the skull barrier, effectively realizes non-invasive intervention on the brain while avoiding mechanical vibration and internal heat effect on the brain tissue.

[0003] However, due to the difference in head size between individual patients, the traditional magnetic therapeutic instrument has insufficient accuracy in acupoint positioning, and often relies on professional physician operation to ensure the accuracy of the treatment target, which has limitations in use and cannot adapt to different head shapes of patients. SUMMARY

[0004] The technical problem to be solved by the present application is that the traditional magnetic therapeutic instrument has insufficient accuracy in acupoint positioning, and often relies on professional physician operation to ensure the accuracy of the treatment target, which has limitations in use and cannot adapt to different head shapes of patients.

[0005] In order to solve the above technical problems, the present application provides a magnetic therapeutic instrument, which comprises a shell, a first treatment head, a second treatment head, a third treatment head and a fourth treatment head, the shell comprises a first shell, a second shell and a third shell, the first shell, the second shell and the third shell are all arc-shaped structures, the two ends of the first shell are connected with the second shell and the third shell respectively, and the connection between the first shell and the second shell is located between the two ends of the second shell, and the connection between the first shell and the third shell is located between the two ends of the third shell, so as to form a wearing cavity for wearing on the head of a patient; The first treatment head is fixedly installed on the first shell, and the first treatment head is located between the two ends of the first shell, the second treatment head is located at the connection between the first shell and the second shell, two third treatment heads are slidingly installed at the two ends of the second shell, and two fourth treatment heads are slidingly installed at the two ends of the third shell, the first treatment head, the second treatment head, the third treatment head and the fourth treatment head all have a treatment end located in the wearing cavity.

[0006] Further, the two ends of the second shell are respectively provided with a first sliding groove, the first sliding groove is in a strip shape, two third treatment heads are respectively installed in the corresponding first sliding grooves and can slide along the extension direction of the first sliding grooves; Two second sliding grooves are formed in two ends of the third shell respectively, the second sliding grooves are long strip-shaped, two fourth treatment heads are installed in the corresponding second sliding grooves respectively and can slide along the extension direction of the second sliding grooves.

[0007] Further, the slot edge of the first sliding groove has a first stop edge which extends from the slot edge of the first sliding groove to the side away from the wearing cavity; The slot edge of the second sliding groove has a second stop edge which extends from the slot edge of the second sliding groove to the side away from the wearing cavity.

[0008] Further, a first supporting bone is arranged in the second shell and abuts against the side of the third treatment head away from the treatment end thereof; A second supporting bone is arranged in the third shell and abuts against the side of the fourth treatment head away from the treatment end thereof.

[0009] Further, the end of the second shell and the corresponding end of the third shell have a space therebetween to form the opening of the wearing cavity.

[0010] Further, the first treatment head, the second treatment head, the third treatment head and the fourth treatment head have the same structure; The first treatment head comprises the treatment end, a fixed shell and an elastic member, the fixed shell is installed in the first shell, one end of the treatment end penetrates through the fixed shell and is exposed to the wearing cavity, the outer wall of the treatment end has a guide groove, the inner wall of the fixed shell has a guide column matched with the guide groove so that the treatment end can be telescopic relative to the fixed shell, the elastic member is installed in the fixed shell and two ends thereof are connected with the bottom wall of the fixed shell and the bottom wall of the treatment end respectively.

[0011] Further, the treatment end comprises a first treatment shell, a second treatment shell, an electromagnet and a locking member, the first treatment shell has a mounting cavity for mounting the electromagnet, a locking groove and a mounting groove, the mounting cavity is arranged through two ends of the first treatment shell, the first treatment shell has the mounting groove and a plurality of locking grooves formed in the end away from the wearing cavity, the second treatment shell has a plug-in edge matched with the mounting groove and a plurality of locking holes arranged corresponding to the locking grooves; The first treatment shell and the second treatment shell are cooperatively installed, the locking member is installed in the locking groove through the locking hole to lock the first treatment shell and the second treatment shell.

[0012] Further, a third supporting rib is arranged in the first shell and abuts against a side of the first treatment head away from the treatment end thereof. A fourth supporting rib is arranged in the second shell and abuts against a side of the second treatment head away from the treatment end thereof.

[0013] Further, a junction box is arranged in the third shell, the first treatment head, the second treatment head, the third treatment head and the fourth treatment head are electrically connected to the junction box, and the junction box is connected to an external power supply through a wire.

[0014] Further, convex lines are arranged on the outer circumferential sides of the second shell and the third shell.

[0015] Compared with the prior art, the magnetic therapy device provided by the embodiment of the present application has the following beneficial effects: The three-section arc-shaped shells are connected to form a wearing cavity, which not only enhances the overall rigidity of the shell and avoids displacement during use, but also better fits the patient's head and improves the wearing comfort. Meanwhile, by arranging multiple treatment points, the magnetic field can be applied to multiple regions simultaneously, and the magnetic therapy of multiple acupoints of the head can be realized. In addition, the third treatment head and the fourth treatment head are slidably installed, which is used to adapt to different head shapes, improve the accuracy of the third treatment head and the fourth treatment head in acupoint positioning, reduce the dependence on professional physicians, and enable the patient to perform the treatment at home, thereby greatly reducing the treatment cost of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described in detail in conjunction with the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the present application. In addition, unless specifically indicated, the drawings are only intended to conceptually represent the composition or structure of the described objects and can include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 is a structural schematic diagram of the magnetic therapy device provided by the embodiment of the present application; Figure 2 is a structural schematic diagram of the magnetic therapy device provided by the embodiment of the present application, which does not include the outer cover; Figure 3 is a sectional view along the A-A direction of Figure 1 ; Figure 4 is a partial enlarged view of the A portion indicated by the circle in Figure 3 ; Figure 5 is a sectional view along the B-B direction ofFigure 1 A cross-sectional view along the BB direction; Figure 6 This is a schematic diagram of the structure of the first treatment head provided in an embodiment of the present invention, excluding the fourth treatment shell; Figure 7 This is provided by the embodiments of the present invention. Figure 5 A magnified view of part B circled in the diagram; In the diagram, 1. Outer shell; 11. First shell; 111. Third support bone; 12. Second shell; 121. First sliding groove; 122. First stop; 123. First support bone; 124. Fourth support bone; 13. Third shell; 131. Second sliding groove; 14. Wearing cavity; 15. Opening position; 16. Protrusion; 2. First treatment head; 21. Treatment end; 211. First treatment shell; 2111. Mounting cavity; 2112. Locking groove; 2113. Mounting groove; 212. Second treatment shell; 2121. Insertion edge; 2122. Locking hole; 213. Electromagnet; 214. Locking element; 22. Fixing shell; 221. Guide post; 23. Elastic element; 3. Second treatment head; 4. Third treatment head; 5. Fourth treatment head; 6. Junction box; 7. Wire. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] like Figure 1 and Figure 2 As shown, the present invention provides a magnetic therapy device, including a shell 1, a first treatment head 2, a second treatment head 3, a third treatment head 4, and a fourth treatment head 5. The shell 1 includes a first housing 11, a second housing 12, and a third housing 13. The first housing 11, the second housing 12, and the third housing 13 are all arc-shaped structures to conform to the contour of the human head and improve wearing comfort. The two ends of the first housing 11 are respectively connected to the second housing 12 and the third housing 13. The connection between the first housing 11 and the second housing 12 is located between the two ends of the second housing 12, and the connection between the first housing 11 and the third housing 13 is located between the two ends of the third housing 13. The three are connected to form a support structure that fits the head and encloses a wearing cavity 14 for wearing on the patient's head, ensuring that the first treatment head 2, the second treatment head 3, the third treatment head 4, and the fourth treatment head 5 can stably and evenly act on different areas of the head.

[0020] The first treatment head 2 is fixedly installed on the first shell 11 and located between the two ends of the first shell 11, so that the first treatment head 2 is located in the central region of the head top for magnetic therapy treatment of the patient's Baihui acupoint. The second treatment head 3 is located at the connection between the first shell 11 and the second shell 12, so that the second treatment head 3 is located in the front region of the forehead for magnetic therapy treatment of the patient's Shenting acupoint. The two third treatment heads 4 are slidingly installed at the two ends of the second shell 12, and the third treatment head 4 can move on the second shell 12 to adjust the position according to the size of the patient's head circumference, so as to adapt to the head shape of different patients and perform acupoint positioning operation on the left and right Taiyang acupoints, thereby facilitating the magnetic therapy treatment of the acupoints and improving the adaptability and treatment effect of the device. The two fourth treatment heads 5 are slidingly installed at the two ends of the third shell 13, and the fourth treatment head 5 can move on the third shell 13 to adjust the position according to the size of the patient's head circumference, so as to adapt to the head shape of different patients and perform acupoint positioning operation on the left and right Fengchi acupoints, thereby facilitating the magnetic therapy treatment of the acupoints and improving the adaptability and treatment effect of the device. The first treatment head 2, the second treatment head 3, the third treatment head 4 and the fourth treatment head 5 all have a treatment end 21 (as shown in Figure 5

[0021] Based on the above structure, the wearing cavity 14 is formed by connecting the three arc-shaped shells, which not only enhances the overall rigidity of the shell 1 and avoids displacement during use, but also better fits the patient's head to improve the comfort of wearing. At the same time, by setting multiple treatment points, the device can simultaneously apply a magnetic field to multiple regions to achieve magnetic therapy of multiple acupoints on the head. In addition, the third treatment head 4 and the fourth treatment head 5 are slidingly installed to adapt to different head shapes, improve the accuracy of the third treatment head 4 and the fourth treatment head 5 in acupoint positioning, and reduce the dependence on professional physicians. Patients can perform treatment at home, greatly reducing the treatment cost of patients.

[0022] It can be understood that the first shell 11, the second shell 12 and the third shell 13 of the embodiment are integrally connected and each include an inner cover facing the wearing cavity 14 and an outer cover facing away from the wearing cavity 14. The inner cover and the outer cover are connected to form a space for installing the first treatment head 2, the second treatment head 3, the third treatment head 4 and the fourth treatment head 5.

[0023] As Figure 2 ​As shown, the two ends of the second shell 12 are respectively provided with first sliding grooves 121, which are long strips and used for guiding the movement of the third treatment heads 4. The two third treatment heads 4 are respectively installed in the corresponding first sliding grooves 121 and can slide along the extension direction of the first sliding grooves 121 to realize the position adjustment of the third treatment heads 4. The arrangement of the first sliding grooves 121 limits the third treatment heads 4 to slide left and right along the extension direction, which not only ensures the controllability of the movement of the third treatment heads 4 but also avoids the shaking or deviation of the third treatment heads 4, thereby ensuring the treatment safety. Based on the above structure, the third treatment heads 4 can move along the first sliding grooves 121 to adapt to the head shapes of different patients, so as to accurately position the left and right temple positions and improve the treatment accuracy. The user or medical staff does not need to disassemble and assemble complicatedly, but only needs to push the third treatment heads 4 to the appropriate positions to start the treatment, which is convenient to operate.

[0024] The two ends of the third shell 13 are respectively provided with second sliding grooves 131, which are long strips and used for guiding the movement of the fourth treatment heads 5. The two fourth treatment heads 5 are respectively installed in the corresponding second sliding grooves 131 and can slide along the extension direction of the second sliding grooves 131 to realize the position adjustment of the fourth treatment heads 5. The arrangement of the second sliding grooves 131 limits the fourth treatment heads 5 to slide left and right along the extension direction, which not only ensures the controllability of the movement of the fourth treatment heads 5 but also avoids the shaking or deviation of the fourth treatment heads 5, thereby ensuring the treatment safety. Based on the above structure, the fourth treatment heads 5 can move along the second sliding grooves 131 to adapt to the head shapes of different patients, so as to accurately position the left and right temple positions and improve the treatment accuracy. The user or medical staff does not need to disassemble and assemble complicatedly, but only needs to push the fourth treatment heads 5 to the appropriate positions to start the treatment, which is convenient to operate.

[0025] Please refer to Figure 3 and Figure 4 The edge of the first sliding groove 121 has a first stop edge 122, which is extended from the edge of the first sliding groove 121 to the side away from the wearing cavity 14. The first stop edge 122 is used for clamping the third treatment head 4 to limit the displacement of the third treatment head 4 in the direction perpendicular to the sliding direction, so that the third treatment head 4 can only slide in the groove and cannot be completely taken out, thereby avoiding the shaking, lifting or poor contact of the third treatment head 4 and improving the stability and safety of the treatment process.

[0026] The edge of the second sliding groove 131 has a second stop edge, which is extended from the edge of the second sliding groove 131 to the side away from the wearing cavity 14. The second stop edge is used for clamping the fourth treatment head 5 to limit the displacement of the fourth treatment head 5 in the direction perpendicular to the sliding direction, so that the fourth treatment head 5 can only slide in the groove and cannot be completely taken out, thereby avoiding the shaking, lifting or poor contact of the fourth treatment head 5 and improving the stability and safety of the treatment process.

[0027] Furthermore, a first support bone 123 is provided within the second housing 12. The first support bone 123 abuts against the side of the third treatment head 4 opposite to its treatment end 21 to provide support for the third treatment head 4. When the device is worn on the patient's head, the third treatment head 4 may move inward into the second housing 12 due to external force, such as pressing. At this time, the first support bone 123 provides a reverse support force to keep the position of the third treatment head 4 stable and prevent the third treatment head 4 from collapsing or shifting inward. Understandably, the first support bone 123 works in conjunction with the first sliding groove 121. The first sliding groove 121 restricts the lateral movement of the third treatment head 4, while the first support bone 123 restricts its vertical displacement.

[0028] A second support bone is provided inside the third housing 13. The second support bone abuts against the side of the fourth treatment head 5 opposite to its treatment end 21 to provide support for the fourth treatment head 5. When the device is worn on the patient's head, the fourth treatment head 5 may move inward into the third housing 13 due to external force, such as pressing. At this time, the second support bone provides a reverse support force to keep the fourth treatment head 5 in a stable position and prevent the fourth treatment head 5 from collapsing or shifting inward. Understandably, the second support bone works in conjunction with the second sliding groove 131. The second sliding groove 131 restricts the lateral movement of the fourth treatment head 5, while the second support bone restricts its vertical displacement.

[0029] It should be noted that the first support bone 123 and the second support bone can be rigid reinforcing ribs or support structures, such as metal rods, plastic reinforcing ribs, brackets, etc., to provide mechanical support.

[0030] like Figure 1 As shown, there is a gap between the end of the second housing 12 and the corresponding end of the third housing 13 to form the opening 15 of the wearing cavity 14.

[0031] This embodiment provides the entire outer shell 1 with a certain degree of elasticity or deformability by setting two openings 15. When the patient has a large head circumference, the outer shell 1 slightly opens up through the elastic deformation of the openings 15 to fit the head shape, thereby improving wearing comfort and compatibility. At the same time, the openings 15 help to disperse impact force and reduce stress concentration, thereby improving the overall impact resistance.

[0032] Furthermore, the first treatment head 2, the second treatment head 3, the third treatment head 4, and the fourth treatment head 5 all have the same structure, realizing a modular design to improve product consistency and production convenience.

[0033] like Figures 5 to 7As shown, the first treatment head 2 comprises a treatment end 21, a fixed shell 22 and an elastic member 23, the fixed shell 22 is installed in the first shell body 11, one end of the treatment end 21 penetrates through the fixed shell 22 and is exposed to the wearing cavity 14, so that the treatment end 21 can directly contact the target site, the outer wall of the treatment end 21 has a guide groove, the inner wall of the fixed shell 22 has a guide column 221 matched with the guide groove, and the two form a sliding guide mechanism to limit the treatment end 21 to move only in the axial direction and prevent it from rotating or deviating, so that the treatment end 21 can be extended and retracted relative to the fixed shell 22 to adapt to the head shape of different patients and ensure that the treatment end 21 always adheres to the skin, the elastic member 23 is installed in the fixed shell 22 and connected with the bottom wall of the fixed shell 22 and the bottom wall of the treatment end 21 at both ends, when the treatment end 21 is pressed in by external force, the elastic member 23 is compressed; after the external force is removed, the elastic member 23 rebounds and pushes the treatment end 21 back to the original position.

[0034] As shown in the drawings, Figure 7 As shown, the treatment end 21 comprises a first treatment shell 211, a second treatment shell 212, an electromagnet 213 and a locking member 214, the first treatment shell 211 has a mounting cavity 2111 for mounting the electromagnet 213, a locking groove 2112 and a mounting groove 2113, the mounting cavity 2111 is arranged through both ends of the first treatment shell 211, the end of the first treatment shell 211 away from the wearing cavity 14 is provided with the mounting groove 2113 and a plurality of locking grooves 2112, and the second treatment shell 212 has a plug-in edge 2121 matched with the mounting groove 2113 and a plurality of locking holes 2122 arranged in correspondence with each locking groove 2112, and it can be understood that the plug-in edge 2121 is a convex edge that can be accurately inserted into the mounting groove 2113 of the first treatment shell 211 to realize the preliminary alignment and embedding of the first treatment shell 211 and the second treatment shell 212; the first treatment shell 211 and the second treatment shell 212 are installed in cooperation, and the locking member 214 is installed in the locking groove 2112 through the locking hole 2122 to lock the first treatment shell 211 and the second treatment shell 212.

[0035] Based on the above structure, during installation, the plug-in edge 2121 of the second treatment shell 212 is butted with the mounting groove 2113 to realize preliminary positioning or assembly, and then the locking member 214 (such as a screw) is passed through the locking hole 2122 from the outside of the second treatment shell 212 and screwed into the locking groove 2112 of the first treatment shell 211 to finally realize firm, stable and detachable connection. The above structure is simple, easy to assemble, maintain or replace the internal electromagnet 213, the multi-point locking can prevent loosening during use and improve safety, and the shell 1 is detachable, which is beneficial to cleaning or maintenance, etc.

[0036] It should be noted that the fixed shell 22 of the embodiment is composed of a third treatment shell and a fourth treatment shell, the third treatment shell is used to be connected with the treatment end 21, and the fourth treatment shell is used to be connected with the third treatment shell to form a cavity, so as to facilitate the installation of the elastic member 23 and the extension and contraction of the treatment end 21.

[0037] Further, the first shell body 11 is provided with a third support bone 111 (as shown in Figure 7 The third support bone 111 abuts against the side of the first treatment head 2 away from the treatment end 21 thereof; the third support bone 111 provides mechanical support for the treatment head, prevents displacement or damage of the treatment head due to stress during use, and at the same time, through the abutting mode, the position of the first treatment head 2 in the first shell body 11 is fixed to avoid shaking.

[0038] The second shell body 12 is provided with a fourth support bone 124 (as shown in Figure 5 The fourth support bone 124 abuts against the side of the second treatment head 3 away from the treatment end 21 thereof; the fourth support bone 124 provides mechanical support for the treatment head, prevents displacement or damage of the treatment head due to stress during use, and at the same time, through the abutting mode, the position of the second treatment head 3 in the second shell body 12 is fixed to avoid shaking.

[0039] It should be noted that the third support bone 111 and the fourth support bone 124 can be rigid reinforcing ribs or support structures, such as metal rods, plastic reinforcing ribs, supports, etc., for providing mechanical support.

[0040] As shown in Figure 5 It also includes a junction box 6 and a wire 7, the junction box 6 is installed in the third shell body 13, the first treatment head 2, the second treatment head 3, the third treatment head 4 and the fourth treatment head 5 are electrically connected with the junction box 6, the junction box 6 is a device for connecting multiple wires, which plays a role in distributing current, protecting the line and facilitating maintenance, and the junction box 6 is externally connected to the power supply through the wire 7, thereby supplying power to the first treatment head 2, the second treatment head 3, the third treatment head 4 and the fourth treatment head 5.

[0041] As shown in Figure 1 The outer circumferential side of the second shell body 12 and the third shell body 13 is provided with a convex strip 16.

[0042] It can be understood that the convex strip 16 is a strip-shaped structure protruding outward on the surface of the second shell body 12 and the third shell body 13, which can be linear, annular or spiral, etc. The convex strip 16 not only serves the purpose of appearance design and improves the quality of the product, but also plays the role of reinforcing rib to improve the rigidity and anti-deformation ability of the shell. In addition, if manual operation (such as hand holding, rotating, installing) is required, the convex strip 16 can increase the friction force to prevent slipping.

[0043] In summary, the embodiment of the present application provides a magnetic therapeutic instrument, which is connected by three-section arc-shaped shells to form a wearing cavity 14, so as to not only enhance the overall rigidity of the shell 1 and avoid displacement during use, but also better fit the patient's head and improve the comfort of wearing. Meanwhile, by setting multiple treatment points, the magnetic field can be applied to multiple regions simultaneously, so as to realize magnetic therapy on multiple acupoints of the head. In addition, the third treatment head 4 and the fourth treatment head 5 are slidably installed, which is used for adapting to different head shapes, improving the accuracy of the third treatment head 4 and the fourth treatment head 5 in acupoint positioning, reducing the dependence on professional physicians, and enabling patients to perform treatment at home, thereby greatly reducing the treatment cost of patients.

[0044] The above description is only the preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make several improvements and replacements without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A magnetic therapy device, characterized in that, The device includes an outer shell, a first treatment head, a second treatment head, a third treatment head, and a fourth treatment head. The outer shell includes a first housing, a second housing, and a third housing. The first housing, the second housing, and the third housing are all arc-shaped structures. The two ends of the first housing are respectively connected to the second housing and the third housing. The connection between the first housing and the second housing is located between the two ends of the second housing, and the connection between the first housing and the third housing is located between the two ends of the third housing, so as to form a wearing cavity for wearing on the patient's head. The first treatment head is fixedly installed on the first housing and is located between the two ends of the first housing. The second treatment head is located at the connection between the first housing and the second housing. The two third treatment heads are slidably installed on the two ends of the second housing. The two fourth treatment heads are slidably installed on the two ends of the third housing. The first treatment head, the second treatment head, the third treatment head and the fourth treatment head all have a treatment end located in the wearing cavity.

2. The magnetic therapy device according to claim 1, characterized in that, The second housing has a first sliding groove at each end. The first sliding groove is elongated. The two third treatment heads are respectively installed in the corresponding first sliding grooves and can slide along the extension direction of the first sliding groove. The third housing has a second sliding groove at each end. The second sliding groove is elongated. The two fourth treatment heads are respectively installed in the corresponding second sliding grooves and can slide along the extension direction of the second sliding groove.

3. The magnetic therapy device according to claim 2, characterized in that, The groove edge of the first sliding groove has a first stop edge, which extends from the groove edge of the first sliding groove toward the side away from the wearing cavity. The second sliding groove has a second stop edge at the groove edge, which extends from the groove edge of the second sliding groove toward the side away from the wearing cavity.

4. The magnetic therapy device according to any one of claims 1-3, characterized in that, The second housing contains a first supporting bone, which abuts against the side of the third treatment head opposite to its treatment end. The third housing contains a second supporting bone, which abuts against the side of the fourth treatment head opposite to its treatment end.

5. The magnetic therapy device according to claim 1, characterized in that, There is a gap between the end of the second housing and the corresponding end of the third housing to form the opening of the wearing cavity.

6. The magnetic therapy device according to claim 1, characterized in that, The first treatment head, the second treatment head, the third treatment head, and the fourth treatment head all have the same structure; The first treatment head includes a treatment end, a fixing shell, and an elastic element. The fixing shell is installed in the first housing. One end of the treatment end passes through the fixing shell and is exposed in the wearing cavity. The outer wall of the treatment end has a guide groove. The inner wall of the fixing shell has a guide post that matches the guide groove, so that the treatment end can extend and retract relative to the fixing shell. The elastic element is installed in the fixing shell, and its two ends are respectively connected to the bottom wall of the fixing shell and the bottom wall of the treatment end.

7. The magnetic therapy device according to claim 6, characterized in that, The treatment end includes a first treatment shell, a second treatment shell, an electromagnet, and a locking member. The first treatment shell has a mounting cavity, a locking groove, and a mounting slot for mounting the electromagnet. The mounting cavity is provided through both ends of the first treatment shell. The first treatment shell has the mounting slot and a plurality of locking grooves at one end away from the wearing cavity. The second treatment shell has an insertion edge adapted to the mounting slot and a plurality of locking holes corresponding to each locking groove. The first treatment shell and the second treatment shell are installed together, and the locking member passes through the locking hole and is installed in the locking groove to lock the first treatment shell and the second treatment shell.

8. The magnetic therapy device according to claim 1, characterized in that, A third support bone is provided inside the first housing, and the third support bone abuts against the side of the first treatment head opposite to its treatment end; The second housing contains a fourth supporting bone, which abuts against the side of the second treatment head opposite to its treatment end.

9. The magnetic therapy device according to claim 1, characterized in that, It also includes a junction box and wires. The junction box is installed inside the third housing. The first treatment head, the second treatment head, the third treatment head, and the fourth treatment head are electrically connected to the junction box, and the junction box is connected to an external power source through the wires.

10. The magnetic therapy device according to claim 1, characterized in that, The second housing and the third housing are provided with raised strips on their outer peripheral sides.

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