Hand-held physiotherapy instrument with replaceable functional head

By designing a handheld physiotherapy device with interchangeable functional heads, the device achieves rapid replacement of functional heads through an interchangeable structure, solving the problems of large main unit size and inconvenience of carrying in existing technologies, thereby improving user experience and market competitiveness.

CN223901091UActive Publication Date: 2026-02-13SHENZHEN YUMEI GAOBIAO TECH CO LTD
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Patent Information

Application Number
CN202423107963.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-17
Publication Date
2026-02-13
Estimated Expiration
2034-12-17

AI Technical Summary

Technical Problem

Existing handheld physiotherapy devices are inconvenient to carry and operate due to their large main unit size and the need to be equipped with handles of different functions.

Method used

Design a handheld physiotherapy device with interchangeable functional heads. The functional heads can be quickly replaced through interchangeable structures. The main unit, which serves as the main body of the handle, includes a connector female body, a connector female copper needle, a connector female air nozzle, a connector male plug, a connector male copper needle, and a negative pressure air nozzle, so as to realize the detachable connection between the first and second functional heads and the main unit.

Benefits of technology

It reduces manufacturing costs, has a smaller size, is easy to carry, provides a better user experience, and improves the product's overall market competitiveness.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a handheld physiotherapy instrument with replaceable functional heads. The handheld physiotherapy instrument comprises a host, a first functional head and a second functional head. The main machine serves as a main body of the handle, and an additional main machine is not needed any more. A connecting piece female seat main body, a connecting piece female seat female copper needle and a connecting female seat female air tap are arranged in the main machine; a connecting piece male plug, a connecting piece male plug male air tap and a connecting piece male plug male copper needle are arranged in the first functional head; a negative pressure air tap is arranged in the second functional head; the components jointly form the interchange structure, and the first function head and the second function head can be detachably connected with the host through the interchange structure, so that the function heads can be replaced.
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Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially relates to physiotherapy instrument technical field and provides a kind of hand-held physiotherapy instrument with replaceable function head. BACKGROUND

[0002] With the improvement of living standards, people pay more and more attention to their health status, and the awareness of disease prevention and health care is increasing. As a convenient and effective home health care appliance, hand-held physiotherapy instrument can meet the needs of people in daily life for health management, help relieve physical fatigue and discomfort, and prevent the occurrence of some chronic diseases, so it is favored by consumers. Negative pressure and radio frequency are the two most widely used technologies in hand-held physiotherapy instrument. The negative pressure and radio frequency functions of the existing hand-held physiotherapy instrument are implemented on different handles, respectively, and are connected to the host instrument to realize their respective functions. When the negative pressure function is needed, the host function interface needs to be switched to the negative pressure option, and then a dedicated negative pressure handle is used. When the radio frequency function is used, the host function interface needs to be switched to the radio frequency option, and then a dedicated radio frequency handle is used.

[0003] Because the host instrument is relatively large in size and needs to be equipped with handles with different functions, the manufacturing cost of the instrument is increased, and it is inconvenient to carry and operate. SUMMARY

[0004] In view of the shortcomings in the prior art, the purpose of the present application is to provide a hand-held physiotherapy instrument with replaceable function head.

[0005] The hand-held physiotherapy instrument with replaceable function head provided by the utility model comprises a host, a connection piece female seat main body is arranged in the host, a plurality of connection piece female seat female copper needles and a connection piece female seat female air nozzle are arranged through the upper and lower end faces of the connection piece female seat main body, a first function head, a connection piece male plug is arranged in the first function head, a plurality of connection piece male plug male copper needles and a connection piece male plug male air nozzle are arranged through the upper and lower end faces of the connection piece male plug, a second function head, a negative pressure air nozzle is arranged in the second function head, the number, shape and position of the connection piece female seat female copper needles correspond to the connection piece male plug male copper needles, the shape and position of the connection piece female seat female air nozzle correspond to the connection piece male plug male air nozzle and the negative pressure air nozzle, the host can be fixedly connected with the first function head or the second function head, the connection piece female seat female copper needles can be inserted and connected with the connection piece male plug male copper needles to form an electrical connection, the connection piece female seat female air nozzle can be inserted and connected with the connection piece male plug male air nozzle to form an air flow channel, and the connection piece female seat female air nozzle can be inserted and connected with the negative pressure air nozzle to form an air flow channel.

[0006] The utility model discloses, host computer as the main part of handle, no longer need extra host computer, the above-mentioned connecting piece female seat main part, connecting piece female seat female copper needle, connecting female seat female air nozzle, connecting piece male plug, connecting piece male plug male air nozzle, connecting piece male plug male copper needle and negative pressure air nozzle jointly constitute the interchangeable structure of the utility model, through the interchangeable structure, first function head and second function head can be detachably connected with host computer, realize function head replacement.

[0007] Further, the connecting piece female seat female copper needle is sunk into the upper end face of the connecting piece female seat main part.

[0008] In the design, the connecting piece female seat main part uses insulating wear-resistant material, preferably PPS material, to ensure the service life. The connecting piece female seat female copper needle is designed to be sunk into the end face of the connecting piece female seat main part, and preferably sunk to a depth of 3mm. This design prevents the connecting piece female seat female copper needle from contacting the outer surface of the function head during replacement, causing a short circuit of components.

[0009] Further, the connecting piece male plug male copper needle and the connecting piece male plug male air nozzle both protrude from the lower end face of the connecting piece male plug, and the protruding length of the connecting piece male plug male air nozzle is greater than that of the connecting piece male plug male copper needle.

[0010] When the first function head is connected to the host computer, to prevent the copper needle from being damaged when the guest does not align the connecting piece male plug male copper needle and the connecting piece female seat female copper needle during operation. In the design, the connecting piece male plug male air nozzle is lengthened, and during the connection process, the connecting piece male plug male air nozzle on the first function head will first contact the connecting female seat female air nozzle on the handle host computer, and after being inserted, it will be used as a guide, and then the connecting piece male plug male copper needle is inserted into the connecting piece female seat female copper needle. This foolproof assembly can reduce the risk of guest action on the hole and copper needle damage.

[0011] Further, a plurality of annular grooves are arranged on the outer surface of the lower part of the negative pressure air nozzle, and a silicone ring is sleeved in the annular grooves.

[0012] When the second function head is connected to the host computer, the negative pressure air nozzle is provided with an air nozzle silicone ring, which can ensure the sealing of the negative pressure function, and can also increase the damping when the guest plugs in, preventing the replaceable head from falling during work.

[0013] The utility model discloses, using interchangeable structure, can realize the quick interchange of different functions by replacing the first function head and the second function head, has the foolproof structure, and guarantees the reliability of connection. In addition, the host computer is the main part of the handle, and no extra host computer is needed, which reduces the production and manufacturing cost, has small volume, is convenient to carry, and has good user operation experience. Greatly improve the comprehensive market competitiveness of the product. DRAWINGS

[0014] Figure 1The utility model provides a handheld physiotherapy apparatus main machine of replaceable function head disassembly structure schematic drawing is provided;

[0015] Figure 2 The utility model provides a handheld physiotherapy apparatus first function head disassembly structure schematic drawing of replaceable function head is provided to the utility model,

[0016] Figure 3 The utility model provides a handheld physiotherapy apparatus second function head disassembly structure schematic drawing of replaceable function head is provided to the utility model,

[0017] Figure 4 The utility model provides a handheld physiotherapy apparatus first function head, second function head schematic drawing of replaceable function head is provided to the utility model,

[0018] Figure 5 The utility model provides a handheld physiotherapy apparatus main machine schematic drawing of replaceable function head is provided to the utility model,

[0019] Figure 6 The utility model provides a handheld physiotherapy apparatus main machine and second function head assembly after schematic drawing of replaceable function head is provided to the utility model.

[0020] Label explanation:

[0021] 100. main machine, 200. first function head, 300. second function head, 301. large negative pressure replaceable head, 302. medium negative pressure replaceable head, 303 small negative pressure replaceable head,

[0022] 0. main machine DC socket, 1. main machine control PCBA, 2. main machine display seat, 3. main machine connecting seat, 4. negative pressure air pump, 5. main machine tail seat, 6. connecting female seat fixed pressing block, 7. connecting piece female seat main body, 8. connecting piece female seat female copper needle, 9. connecting piece female seat female air nozzle,

[0023] 10. replaceable head silica gel ring, 11. first base, 12. air nozzle silica gel ring, 13. connecting piece male plug, 14. connecting piece male plug pressing block, 15. first PCBA, 16. first electrode seat, 17. first electrode, 19. connecting piece male plug male air nozzle, 20. connecting piece male plug male copper needle

[0024] 21. negative pressure air nozzle, 22. negative pressure bottom disc, 23. negative pressure bottom cover, 24. negative pressure massage ball. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0026] Figure 1 、 Figure 2 and Figure 3 The first embodiment of the utility model is shown.

[0027] As Figure 1 shown, the hand-held physiotherapy instrument with replaceable functional head provided by the embodiment comprises a host 100, a connector female seat body 7 is arranged in the host 100, a plurality of connector female seat female copper needles 8 and a connector female seat female air nozzle 9 are arranged through the upper and lower end faces of the connector female seat body 7;

[0028] As Figure 2 shown, the hand-held physiotherapy instrument with replaceable functional head provided by the embodiment further comprises a first functional head 200, a connector male plug 13 is arranged in the first functional head 200, a plurality of connector male plug male copper needles 20 and a connector male plug male air nozzle 19 are arranged through the upper and lower end faces of the connector male plug 13;

[0029] As Figure 3 shown, the hand-held physiotherapy instrument with replaceable functional head provided by the embodiment further comprises a second functional head 300, a negative pressure air nozzle 21 is arranged in the second functional head 300;

[0030] As Figures 1-3 shown, the hand-held physiotherapy instrument with replaceable functional head provided by the embodiment, the number, shape and position of the connector female seat female copper needles 8 and the connector male plug male copper needles 20 correspond to each other; the shape and position of the connector female seat female air nozzle 9, the connector male plug male air nozzle 19 and the negative pressure air nozzle 21 correspond to each other; the host 100 can be fixedly connected with the first functional head 200 or the second functional head 300; the connector female seat female copper needles 8 can be plugged and connected with the connector male plug male copper needles 20 to form an electrical connection; the connector female seat female air nozzle 9 can be plugged and connected with the connector male plug male air nozzle 19 to form an air flow channel; the connector female seat female air nozzle 9 can be plugged and connected with the negative pressure air nozzle 21 to form an air flow channel.

[0031] In the embodiment, the host 100 serves as the main body of the handle, and an additional host is no longer needed. The connector female seat body 7, the connector female seat female copper needles 8, the connector female seat female air nozzle 9, the connector male plug 13, the connector male plug male air nozzle 19, the connector male plug male copper needles 20 and the negative pressure air nozzle 21 jointly constitute the interchangeable structure of the embodiment, through which the first functional head 200 and the second functional head 300 can be detachably connected with the host 100, so that the functional head replacement is realized.

[0032] Further, as Figure 1 shown, the connector female seat female copper needles 8 sink into the upper end face of the connector female seat body 7.

[0033] In the design, the female connector main body 7 uses an insulating wear-resistant material, preferably PPS material, to ensure the service life. The female connector female copper needle 8 is designed to be sunken into the end face of the female connector main body 7, and preferably sunken by 3 mm. This design prevents the female connector female copper needle 8 from contacting the outer surface of the functional head during replacement of the functional head, causing a short circuit of components.

[0034] Further, as shown in Figure 2 , the male connector male plug copper needle 20 and the male connector male plug air nozzle 19 both protrude from the lower end face of the male connector male plug 13, and the protruding length of the male connector male plug air nozzle 19 is greater than that of the male connector male plug copper needle 20.

[0035] When the first functional head 200 is connected to the main machine 100, in order to avoid the guest from damaging the copper needle when the male connector male plug copper needle 20 and the female connector female copper needle 8 are not aligned. In the design, the male connector male plug air nozzle 19 is lengthened, and during the connection process, the male connector male plug air nozzle 19 on the first functional head 200 will first contact the female connector female air nozzle 9 on the handle main machine, and after being inserted, it will be used as a guide, and then the male connector male plug copper needle 20 will be inserted into the female connector female copper needle 8. This foolproof assembly can reduce the risk of guest action and copper needle damage.

[0036] Further, as shown in Figure 3 , a plurality of annular grooves are provided on the outer surface of the lower part of the negative pressure air nozzle 21, and the air nozzle silica gel ring 12 is sleeved in the annular grooves.

[0037] When the second functional head 200 is connected to the main machine 100, the negative pressure air nozzle 21 is provided with the air nozzle silica gel ring 12, which can not only ensure the sealing of the negative pressure function, but also increase the damping when the guest pulls out the plug, preventing the drop of the replaceable head during work.

[0038] Further, as shown in Figure 1 , the main machine 100 further comprises a main machine display seat 2, a main machine connection seat 3, a main machine tail seat 5, and a female connector main body 7, which are connected in sequence from bottom to top, and the main machine DC socket 0 is arranged in the main machine display seat 2; the female connector main body 7 is fixedly arranged in the female connector fixed pressing block 6; the main machine 100 further comprises a negative pressure air pump 4 fixedly connected with the main machine tail seat 5, a hollow chamber is arranged in the main machine connection seat 3, and the negative pressure air pump 4 is accommodated in the hollow chamber; the negative pressure air pump 4 is connected with the lower end of the female connector female air nozzle 9, forming an air flow channel.

[0039] The above-mentioned main machine display seat 2, main machine connection seat 3, negative pressure air pump 4, main machine tail seat 5, female connector fixed pressing block 6, female connector main body 7, female connector female copper needle 8, and female connector female air nozzle 9 constitute a negative pressure system.

[0040] Further, as shown in Figure 1 , the host display seat 2 outside is provided with a host control PCBA1, and the host control PCBA1 is provided with a control and display device; the host control PCBA1 is electrically connected with the host DC socket 0, the negative pressure air pump 4 and the connecting piece female seat female copper needle 8.

[0041] The host control PCBA1 is the control system of the embodiment, and after the first functional head 100 and the second functional head 200 are connected with the host 100, the host control PCBA1 can control the first functional head 100 and the second functional head 200.

[0042] Further, as shown in Figure 2 , the first functional head 200 further comprises a fixedly connected first electrode seat 16 and a flared hollow first base 11, the top surface of the first electrode seat 16 is provided with at least one first electrode 17, and the first electrode seat 16 and the first base 11 are fixedly connected at the large end to form a containing cavity; a first PCBA 15, a connecting piece male plug 14 and the connecting piece male plug 13 are sequentially connected from top to bottom in the containing cavity; a plurality of annular grooves are arranged on the lower part of the connecting piece male plug male air nozzle 19, and the annular grooves are sleeved with air nozzle silica gel rings 12; a plurality of annular grooves are arranged on the outer surface of the small end opening of the first base 11, and replaceable head silica gel rings 10 are arranged in the annular grooves; and the connecting piece male plug 13 is contained in the small end opening of the first base 11.

[0043] Further, as shown in Figure 3 , the second functional head 300 further comprises a flared negative pressure bottom disc 22, and the large end of the negative pressure bottom disc 22 is threadedly connected with a negative pressure bottom cover 23; a plurality of annular grooves are arranged on the outer wall of the small end of the negative pressure bottom disc 22, and a plurality of replaceable head silica gel rings 10 are sleeved in the annular grooves; the inner wall of the small end of the negative pressure bottom disc 22 is interference-connected with the outer wall of the negative pressure air nozzle 21; and at least one negative pressure massage ball 24 is arranged on the opposite end surface of the negative pressure bottom cover 23 and the negative pressure bottom disc 22.

[0044] Further, as shown in Figure 2 and Figure 4 , the first functional head 200 is a radio frequency replaceable head, and the first electrode 17 is a radio frequency electrode.

[0045] Further, as shown in Figure 3 and Figure 4 , the second functional head 300 is at least one; the second functional head 300 can be a large negative pressure replaceable head 301, a medium negative pressure replaceable head 302 or a small negative pressure replaceable head 303; the difference between the large negative pressure replaceable head 301, the medium negative pressure replaceable head 302 and the small negative pressure replaceable head 303 lies in that the sizes of the negative pressure bottom disc 22 and the negative pressure bottom cover 23 are different.

[0046] When in use, the whole machine will start to work after the host control PCBA 1 is powered by the host DC socket 0. At this time, the default is the negative pressure function, and the energy level and time length of the negative pressure function can be adjusted through the control and display device on the host control PCBA 1. At this time, the second functional head 300 is plugged in, and the key is pressed to start supplying power to the negative pressure air pump 4. The negative pressure air pump 4 is connected to the female seat female air nozzle 9 through a common silica gel air pipe to connect the air path. The negative pressure air nozzle 21 is connected to the female seat female air nozzle 9 to ensure the conduction of the air path. The silica gel ring 12 of the air nozzle further ensures the air tightness of the connection, so that the negative pressure bottom cover 23 forms a negative pressure cavity, and a negative pressure physiotherapy effect is achieved.

[0047] When the radio frequency function needs to be switched, the second functional head 300 is removed and replaced with the first functional head 200. At this time, the first functional head 200 is connected to the host 100 through the exchange structure. The first PCBA 15 is connected to the host PCBA 1 through the connection of the male plug copper needle 20 on the first functional head 200 and the female seat copper needle 8 of the host 100. At this time, the resistance of the first PCBA 15 is recognized, and the signal is transmitted to the host PCBA 1. The host automatically switches to the radio frequency function, and the display device on the host control PCBA 1 displays synchronously. At this time, the energy level and time length of the radio frequency function can be adjusted through the control device on the host control PCBA 1. Pressing the key starts to supply power to the first PCBA 15 and transmit signals. The radio frequency energy transmitted by the first electrode 17 heats the skin tissue and makes the fat cells move faster after being heated, thereby destroying the fat cell membrane and achieving the purpose of reducing fat and shaping the skin.

[0048] In this embodiment, three different sizes of second functional heads 300 are included, namely large negative pressure interchangeable head 301, medium negative pressure interchangeable head 302, and small negative pressure interchangeable head 303, which correspond to the body, hand, and face areas respectively in actual operation and use. The three second functional heads 300 are connected to the host 100 through the negative pressure air nozzle 21 and the connection female seat female air nozzle 9, and the structure is universal, so users can quickly replace them according to their individual needs.

[0049] The handheld physiotherapy instrument of the present embodiment can realize the connection of the negative pressure interchangeable head through the connection female seat female air nozzle in the host, and realize the connection of the radio frequency interchangeable head through the connection female seat female copper needle in the host, so that the same host can be replaced with different functional heads. The control system and the negative pressure system are designed in the host, and the host is part of the handle, replacing the traditional bulky host and external device. Three different sizes of negative pressure interchangeable heads are included, namely large negative pressure interchangeable head, medium negative pressure interchangeable head, and small negative pressure interchangeable head, and the connection structure is universal, so that they can be quickly connected to the same handle host.

[0050] It should be noted that, in this article, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations, nor can it be understood as indicating or implying relative importance. Moreover, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or terminal device.

[0051] The above describes in detail the hand-held physiotherapy instrument with replaceable functional head provided by the present application. The principles and implementation modes of the present application are described by applying specific examples. The above example is only used to help understand the present application, and the content of the description should not be understood as a limitation on the present application. Meanwhile, for those skilled in the art, according to the present application, there will be different forms of changes in specific implementation modes and application ranges, which do not need to be enumerated here and cannot be enumerated here, and the obvious changes or changes derived therefrom are still within the protection scope of the present application.

Claims

1. A handheld physiotherapy instrument with replaceable functional head, characterized in that: it comprises a main machine (100), a connector female seat body (7) is arranged in the main machine (100), a plurality of connector female seat female copper needles (8) and a connector female seat female air nozzle (9) are arranged through the upper and lower end faces of the connector female seat body (7); a first functional head (200), a connector male plug (13) is arranged in the first functional head (200), a plurality of connector male plug male copper needles (20) and a connector male plug male air nozzle (19) are arranged through the upper and lower end faces of the connector male plug (13); a second functional head (300), a negative pressure air nozzle (21) is arranged in the second functional head (300); the number, shape and position of the connector female seat female copper needles (8) and the connector male plug male copper needles (20) correspond to each other; the shape and position of the connector female seat female air nozzle (9), the connector male plug male air nozzle (19) and the negative pressure air nozzle (21) correspond to each other; the main machine (100) is fixedly connected with the first functional head (200) or the second functional head (300); the connector female seat female copper needles (8) are inserted into the connector male plug male copper needles (20) to form an electrical connection; the connector female seat female air nozzle (9) is inserted into the connector male plug male air nozzle (19) to form an air flow channel; the connector female seat female air nozzle (9) is inserted into the negative pressure air nozzle (21) to form an air flow channel.

2. The handheld physiotherapy instrument with replaceable functional head according to claim 1, characterized in that: the connector female seat female copper needles (8) are sunk into the upper end face of the connector female seat body (7).

3. The handheld physiotherapy instrument with replaceable functional head according to claim 2, characterized in that: the connector male plug male copper needles (20) and the connector male plug male air nozzle (19) both protrude from the lower end face of the connector male plug (13), and the protruding length of the connector male plug male air nozzle (19) is greater than that of the connector male plug male copper needles (20).

4. The handheld physiotherapy instrument with replaceable functional head according to claim 1, characterized in that: a plurality of annular grooves are arranged on the outer surface of the lower part of the negative pressure air nozzle (21), and an air nozzle silica gel ring (12) is sleeved in the annular grooves.

5. The handheld physiotherapy instrument with replaceable functional head according to claim 2, characterized in that: the main machine (100) further comprises a main machine display seat (2), a main machine connecting seat (3), a main machine tail seat (5) and a connector female seat fixing pressing block (6) connected in sequence from bottom to top, a main machine DC socket (0) is arranged in the main machine display seat (2), and the connector female seat body (7) is fixedly arranged in the connector female seat fixing pressing block (6); the main machine (100) further comprises a negative pressure air pump (4) fixedly connected with the main machine tail seat (5), a hollow chamber is arranged in the main machine connecting seat (3), and the negative pressure air pump (4) is contained in the hollow chamber; the negative pressure air pump (4) is connected with the lower end of the connector female seat female air nozzle (9) to form an air flow channel.

6. The handheld physiotherapy instrument with replaceable functional head according to claim 5, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The host display seat (2) is provided with a host control PCBA (1) outside, and the host control PCBA (1) is provided with a control and display device; The host control PCBA (1) is electrically connected with the host DC socket (0), the negative pressure air pump (4) and the connecting piece female seat female copper needle (8).

7. The handheld physiotherapy instrument with replaceable functional head according to claim 3, wherein: The first functional head (200) further comprises: A fixedly connected first electrode seat (16) and a flared hollow first base (11), the top surface of the first electrode seat (16) is provided with at least one first electrode (17), The first electrode seat (16) and the first base (11) are fixedly connected at the large end to form a containing cavity; The containing cavity is provided with a first PCBA (15), a connecting piece male plug pressure block (14) and the connecting piece male plug (13) connected in sequence from top to bottom; The connecting piece male plug male air nozzle (19) is provided with a plurality of annular grooves at the lower part, and the annular grooves are sleeved with air nozzle silica gel rings (12); The first base (11) is open at the small end, and the outer surface is provided with a plurality of annular grooves, and the annular grooves are provided with replaceable head silica gel rings (10); the connecting piece male plug (13) is contained in the small end opening of the first base (11).

8. The handheld physiotherapy instrument with replaceable functional head according to claim 4, wherein: The second functional head (300) further comprises: A flared negative pressure base plate (22), the large end of the negative pressure base plate (22) is threadedly connected with a negative pressure base cover (23); The outer wall of the small end of the negative pressure base plate (22) is provided with a plurality of annular grooves, and a plurality of replaceable head silica gel rings (10) are sleeved in the annular grooves; The inner wall of the small end of the negative pressure base plate (22) is interference connected with the outer wall of the negative pressure air nozzle (21); At least one negative pressure massage ball (24) is arranged on the opposite end surface of the negative pressure base cover (23) and the negative pressure base plate (22).

9. The handheld physiotherapy instrument with replaceable functional head according to claim 7, wherein: The first functional head (200) is a radio frequency replaceable head, and the first electrode (17) is a radio frequency electrode.

10. The handheld physiotherapy instrument with replaceable functional head according to claim 8, wherein: The second functional head (300) is at least one; The second functional head (300) can be a large negative pressure replaceable head (301), a medium negative pressure replaceable head (302) or a small negative pressure replaceable head (303); The difference between the large negative pressure replaceable head (301), the medium negative pressure replaceable head (302) and the small negative pressure replaceable head (303) lies in that the sizes of the negative pressure base plate (22) and the negative pressure base cover (23) are different.