Portable ultrasonic knife

Abstract

The utility model discloses a portable ultrasonic knife which is characterized in that a battery is detachably connected with a main machine through a plugging mechanism, a standby battery can be conveniently replaced at any time, the battery without electricity can be charged at any time to be replaced, and almost infinite endurance can be achieved theoretically. The heat exchanger is rotated to different gears to be matched with unlocking, charging and working, so that mistaken unlocking by children is avoided, a child lock mechanism is formed, heat generated by the heat exchanger is dissipated in a heat exchange mode by arranging a heat dissipation mechanism, an air channel and a heat dissipation fan, the working time of the machine can be prolonged, and the machine is provided with two switching mechanisms of a click switch and a push switch. The switch meets the requirements of different consumers for switch preferences, has a simple, compact, small and durable overall structure, and is suitable for popularization.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic scalpel technology, and in particular to a portable ultrasonic scalpel. Background Technology

[0002] Current portable ultrasonic scalpels generally suffer from the following problems: First, in the pursuit of high power, they generally lack long battery life; second, their switching methods are too limited, using either a long press or a toggle switch, making it impossible to use both simultaneously and catering to different user preferences; third, they lack an effective child lock mechanism when turned on, and with portable ultrasonic scalpels now widely used in the civilian market, preventing accidental use by children is crucial; fourth, heat dissipation, a limiting factor in the durability of most ultrasonic scalpels, remains unresolved, typically requiring shutdown to cool down after a few minutes of use, significantly hindering the product's efficiency. These issues urgently need to be addressed. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a portable ultrasonic scalpel to solve the technical problems mentioned in the background art.

[0004] To solve the technical problem, this utility model adopts the following technical solution:

[0005] A portable ultrasonic scalpel includes a main unit and a battery. The battery is installed on one side of the main unit. The main unit includes a handheld housing, a switch device, a transducer, a main board, and a heat dissipation mechanism. The main board, transducer, and heat dissipation mechanism are arranged sequentially on the inner side of the main unit. The heat dissipation mechanism includes a cooling fan and heat dissipation holes. The cooling fan is installed on one side of the transducer and can dissipate heat from the transducer while exhausting hot air through the heat dissipation holes. The switch device is installed on one side of the handheld housing and is used to control the opening and closing of the ultrasonic scalpel.

[0006] Specifically, the heat dissipation mechanism also includes a heat dissipation duct. A heat dissipation duct is formed between the inner side of the handheld housing, the outer side of the transducer, and the cooling fan. Air enters from the bottom of the main unit, passes through the duct, and is then dissipated through the heat dissipation holes.

[0007] Specifically, the heat dissipation air duct includes an air inlet duct, a heat exchange air duct, and an air outlet duct. The transducer has a capillary air inlet hole on the side near the blade, and the capillary air inlet hole and the transducer form an air inlet duct. The transducer body has a large space heat exchange air duct above it. The cooling fan forms the air outlet duct. The cooling fan includes an air inlet, a main fan, and an air outlet. The air inlet is located on one side of the transducer, and the air outlet is located on both sides of the main fan, just aligned with the heat dissipation hole.

[0008] Specifically, the upper end of the main unit is detachably equipped with a battery via a plug-in mechanism. The plug-in mechanism includes a plug groove, a plug connector, a first rotation limiting protrusion, a first limiting slide, a second rotation limiting protrusion, and a second limiting slide. The upper end of the main unit is recessed to form a plug groove. The inner side of the plug groove is provided with a first contact group. The side wall of the plug groove is provided with a first limiting slide and a second limiting slide from top to bottom. The lower end of the battery is provided with a plug connector. The plug connector is provided with a first rotation limiting protrusion and a second rotation limiting protrusion from top to bottom. The bottom end of the plug connector is provided with a second contact group. The first rotation limiting protrusion slides in a limiting engagement with the first limiting slide, and the second rotation limiting protrusion slides in a limiting engagement with the second limiting slide.

[0009] Specifically, both the first contact group and the second contact group include a positive contact and a negative contact, wherein the negative contact is located in the middle and the positive contact is located outside the negative contact.

[0010] Specifically, the positive contact includes a charging positive contact and a working positive contact. The charging positive contact, the working positive contact, and the negative contact are distributed at right angles in a three-point manner. It also includes a signal contact, which is located on the other side of the working positive contact and is symmetrically distributed with the working positive contact.

[0011] Specifically, the first limiting slide includes a first inlet groove, a first concave point, and a second concave point. The first inlet groove and the first concave point form a first front section, and the first concave point and the second concave point form a first rear section. The arc surface of the first front section forms a 45-degree angle with the axis of the insertion groove, and the first rear section forms a 90-degree angle with the axis of the insertion groove. The second limiting slide includes a second inlet groove, a third concave point, and a fourth concave point. The second inlet groove and the third concave point form a second front section, and the third concave point and the fourth concave point form a second rear section. The arc surface of the second front section forms a 45-degree angle with the axis of the insertion groove, and the first rear section forms a 90-degree angle with the axis of the insertion groove. The charging positive contact is vertically distributed with the first protrusion, and when the first protrusion enters the first inlet groove, the second protrusion also enters the second inlet groove.

[0012] Specifically, the switching device includes a toggle switch and a push switch, wherein the toggle switch is used to control the operation of the ultrasonic scalpel by toggling, and the push switch is used to control the operation of the ultrasonic scalpel by pressing.

[0013] Specifically, a switch rail is provided on one side of the handheld housing, and an FPC button PCB board is provided at the lower end of the switch rail. One end of the FPC button PCB board is electrically connected to the motherboard, and the FPC button PCB board has a toggle switch and a push switch. The switch rail has a rail groove, and the inner side of the rail groove has partition protrusions. A switch lever is slidably connected to the outer side of the switch rail. The switch lever includes a slide rail end and a lever end, wherein the slide rail end is located on the inner side and is T-shaped and slides with the rail groove. The inner side of the slide rail end has a first switch groove and a second switch groove that can engage with the partition protrusions. When the switch lever is manually moved so that the first switch groove engages with the partition protrusions, the switch device is in toggle switch control. When the switch lever is manually moved so that the second switch groove engages with the partition protrusions, the switch device is in push switch control. It should be noted that the length of the slide rail end is less than the length of the rail groove.

[0014] Specifically, the lower end of the main unit is also connected to a main unit cover, and the lower end of the main unit cover is provided with a maintenance cover. The main unit cover and the maintenance cover are magnetically attached to each other by a magnetic suction assembly. The inner side of the maintenance cover is provided with a tool changing groove and a tool storage hole. The tool changing groove is used to loosen the transducer locking screw, and the tool storage hole stores maintenance tools.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model patent features a plug-in mechanism that allows for detachable connection between the battery and the main unit, facilitating easy replacement of the spare battery and recharging of any depleted battery. Theoretically, this could achieve near-unlimited battery life. The plug-in mechanism incorporates a rotating gear mechanism that matches different gears for unlocking, charging, and operation, thus preventing accidental activation by children and creating a child lock. A heat dissipation mechanism, using air ducts and a cooling fan, effectively dissipates heat generated by the transducer, extending the machine's operating time. The machine offers both toggle and push-button switching mechanisms to meet different consumer preferences. The overall structure is simple, compact, small, durable, and suitable for widespread adoption. Attached Figure Description

[0017] Figure 1 This is an assembly drawing of the overall structure of this utility model patent.

[0018] Figure 2 : Assemble the overall structure of this utility model patent Figure 2 ;

[0019] Figure 3 This is an exploded view of the overall structure of this utility model patent.

[0020] Figure 4: An breakdown of the overall structure of this utility model patent Figure 2 ;

[0021] Figure 5 : A 3D view of the main unit structure (showing one of the connector slots);

[0022] Figure 6 : A 3D view of the main unit structure (showing the second connector slot);

[0023] Figure 7 : A 3D view of the main unit structure (showing the third connector slot);

[0024] Figure 8 : A 3D diagram of the battery structure (showing one of the connectors);

[0025] Figure 9 : A 3D diagram of the battery structure (showing one of the connectors);

[0026] Figure 10 : Top view of the plug and slot in the plug-in mechanism;

[0027] Figure 11 This is one of the rotation position diagrams for the insertion / removal mechanism;

[0028] Figure 12 : This is the second diagram showing the rotation positions of the insertion / removal mechanism;

[0029] Figure 13 : This is the third diagram showing the rotation positions of the insertion / removal mechanism;

[0030] Figure 14 : Assemble the overall structure of this utility model patent Figure 3 ;

[0031] Figure 15 :for Figure 14 Sectional view of AA in the middle;

[0032] Figure 16 : An breakdown of the overall structure of this utility model patent Figure 3 ;

[0033] Figure 17 : An breakdown of the overall structure of this utility model patent Figure 4 ;

[0034] Figure 18 : This is an exploded view of the host computer;

[0035] Figure 19 : This is an exploded view of the switching device structure;

[0036] Figure 20 : Structural breakdown of the switching device Figure 2 ;

[0037] In the diagram: Main unit 10, Battery 20, Handheld housing 1, Switch device 2, Transducer 3, Main board 4, Heat dissipation mechanism 5, Cooling fan 51, Heat dissipation hole 52, Heat dissipation duct 53, Air inlet duct 531, Heat exchange duct 532, Air outlet duct 533, Capillary air inlet 54, Air inlet 511, Main fan 512, Air outlet 513, Plug-in mechanism 6, Plug slot 61, Plug connector 62, First rotation limit protrusion 63, First limit slide 64, Second rotation limit protrusion 65, Second limit slide 66, First contact group 67, Second contact group 68, Positive contact 671, Negative contact 672, Charging positive contact 671a, Working positive contact 671b, Signal electrode Contact 671c, first inlet groove 641, first recess 642, second recess 643, first front section 64a, first rear section 64b, second inlet groove 661, third recess 662, fourth recess 663, second front section 66a, second rear section 66b, toggle switch 21, push switch 22, switch rail component 23, FPC button PCB board 24, rail groove 231, partition protrusion 231a, switch lever 25, slide rail end 251, lever end 252, main unit cover 30, inspection cover 310, magnetic suction assembly 301, tool change slot 311, tool storage hole 312, first switch slot 251a, second switch slot 251b, blade 31. Detailed Implementation

[0038] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0039] refer to Figures 1 to 20 :

[0040] This embodiment provides a portable ultrasonic scalpel, designed to be handheld, long-lasting, with multiple switching modes and a child lock function. It mainly includes a main unit 10 and a battery 20. The battery 20 is installed on one side of the main unit 10 via a plug-in mechanism 6. The main unit 10 includes a handheld housing 1, a switching device 2, a transducer 3, a main board 4, and a heat dissipation mechanism 5. The main board 4, transducer 3, and heat dissipation mechanism 5 are installed on the inner side of the main unit 10 in an assembly-friendly order. The heat dissipation mechanism 5 includes a cooling fan 51 and heat dissipation holes 52. The cooling fan 51 is installed on one side of the transducer 3 and dissipates heat from the transducer 3 while expelling hot air through the heat dissipation holes 52. The heat dissipation holes 52 are located on the side of the handheld housing 1 furthest from the transducer 3. The switching device 2 is installed on one side / lower end of the handheld housing 1 and is used to control the opening and closing of the ultrasonic scalpel.

[0041] It is important to understand that the working logic of the ultrasonic scalpel here is that the piezoelectric ceramic of the transducer 3 inside the host 10 is excited by the current, generating mechanical vibration, which is then transmitted to the blade 31 installed at the end of the transducer 3, forming an amplitude of more than 10,000 times per second. The high-frequency amplitude, combined with the blade 31 and its own sharpness, can achieve the effect of cutting iron like mud.

[0042] Specifically, in order to efficiently exhaust hot air, the heat dissipation mechanism 5 also includes a heat dissipation duct 53. The heat dissipation duct 53 is formed between the inner side of the handheld housing 1, the outer side of the transducer 3 and the heat dissipation fan 51. The air enters from the bottom of the host 10, passes through the duct and is then dissipated through the heat dissipation hole 52.

[0043] Specifically, the heat dissipation duct 53 includes an air inlet duct 531, a heat exchange duct 532, and an air outlet duct 533. A capillary air inlet 54 is provided on the side of the transducer near the blade 31. The blade 31 is installed at the end of the transducer 3. A shock-absorbing ring is provided at the end of the transducer 3, and an annular toothed groove is provided on the inner ring of the shock-absorbing ring. The annular toothed groove and the end of the transducer 3 form a capillary air inlet 54. The capillary air inlet 54 and the transducer 3 form the air inlet duct 531. That is, the space area at one end of the transducer 3 where the capillary air inlet 54 is located forms the air inlet duct 531. After entering through the capillary air inlet 54, the air passes through the space area at the end of the transducer 3 and enters the heat exchange duct 532. A large-space heat exchange duct 532 is located above the main body of the transducer 3. This area is the main area for heat exchange or cooling. Since the main heat-generating part of the transducer 3 is located in its main body, i.e., the end, a large cavity is formed between the transducer 3 and the main body for heat exchange. The cooling fan 51 forms the air outlet duct 533. The cooling fan 51 includes an air inlet 511, a main fan 512, and an air outlet 513. The air inlet 511 is located on one side of the transducer 3, and the air outlet 513 is located on both sides of the main fan 512, which are aligned with the heat dissipation holes 52. Thus, a complete air blowing system is formed, where air enters from the capillary air inlet 54, passes through the transducer 3, and is blown out to the heat dissipation holes 52 by the cooling fan 51. The heat dissipation holes 52 are located at the upper end of the handheld shell and will not be blocked by the palm. Preferably, the cooling fan 51 is a turbofan.

[0044] Specifically, for the detachable installation of the battery 20 and the host 10, the battery 20 is detachably installed on the upper end of the host 10 via a plug-in mechanism 6. The plug-in mechanism 6 includes a plug groove 61, a plug connector 62, a first rotation limiting protrusion 63, a first limiting slide 64, a second rotation limiting protrusion 65, and a second limiting slide 66. The upper end of the host 10 is recessed to form the plug groove 61. The inner side of the plug groove 61 is provided with a first contact piece group 67. The side wall of the plug groove 61 is provided with a first limiting slide 64 and a second limiting slide 66 from top to bottom. The lower end of the battery 20 is provided with a plug connector 62. The plug connector 62 is provided with a first rotation limiting protrusion 63 and a second rotation limiting protrusion 65 from top to bottom. The bottom end of the plug connector 62 is provided with a second contact piece group 68. The first rotation limiting protrusion slides and the first limiting slide 64 for sliding limit engagement, and the second rotation limiting protrusion slides and the second limiting slide 66 for sliding limit engagement.

[0045] Specifically, both the first contact group 67 and the second contact group 68 include a positive contact 671 and a negative contact 672, wherein the negative contact 672 is located in the middle or at the center, and the positive contact 671 is located outside the negative contact 672.

[0046] Specifically, the positive contact 671 includes a charging positive contact 671a and a working positive contact 671b. The charging positive contact 671a, the working positive contact 671b, and the negative contact 672 are distributed at right angles to each other. It also includes a signal contact 671c, which is located on the other side of the working positive contact 671b and is symmetrically distributed with the working positive contact 671b. It should be understood that the contacts at the battery 20 end and the contacts at the host 10 end have the same properties. However, in order to realize the gear shifting mechanism, preferably, the charging positive contact 671a at the battery 20 end is located at the top, the working positive contact 671b and the signal contact 671c are located on both sides of the negative contact 672, while the charging positive contact 671a and the working positive contact 671b at the host 10 end are the same contact, and the signal contact 671c is located on the other side.

[0047] Specifically, the first limiting slide 64 includes a first inlet groove 641, a first recess 642, and a second recess 643. The first inlet groove 641 and the first recess 642 form a first front section 64a, and the first recess 642 and the second recess 643 form a first rear section 64b. The arc surface of the first front section 64a forms a 45-degree angle with the axis of the insertion groove 61, and the first rear section 64b forms a 90-degree angle with the axis of the insertion groove 61. The second limiting slide 66 includes a second inlet groove 661 and a third recess 662. The second inlet groove 661 and the third inlet groove 662 form the second front section 66a, and the third inlet groove 662 and the fourth inlet groove 663 form the second rear section 66b. The arc surface of the second front section 66a forms a 45-degree angle with the axis of the insertion groove 61, and the first rear section 64b forms a 90-degree angle with the axis of the insertion groove 61. The charging positive contact 671a is vertically distributed with the first protrusion, and when the first protrusion enters the first inlet groove 641, the second protrusion also enters the second inlet groove 661.

[0048] The rotation logic of this battery 20 when it is installed on the host 10 is as follows: (Refer to...) Figures 11-13 Taking the first protrusion and the first limiting slide 64 as an example: because the charging positive contact 671a at the end of the battery 20 is vertically distributed with the first protrusion, the charging positive contact 671a at the end of the battery 20 and the first protrusion are vertically overlapping. After aligning the first protrusion of the battery 20 with the first inlet groove 641 and inserting it downwards, the first protrusion will be in the first position, which is the unlock position or the first position. Figure 11 At this point, you can also remove the battery from position 20, and then rotate the battery clockwise by 45 degrees until the first protrusion reaches the position of the first concave point 642, also known as the second position. Figure 12 At this time, because the charging positive contact 671a at the end of battery 20 is in contact with the charging positive contact 671a at the end of host 10 (the working positive contact 671b and the charging positive contact 671a in the plug slot are at the same point), host 10 can charge battery 20, but cannot drive transducer 3 and cooling fan 51 to work, and switch device 2 cannot be opened. The charging of host 10 can be achieved through the charging port at one end, or with the charging socket. When the battery is rotated 90 degrees (or 135 degrees compared to the original), the first protrusion is disengaged from the first concave point 642 and enters the first rear section 64b position and continues to rotate until the first protrusion engages with the second concave point 643, reaching the third position. Figure 13When the positive working contact 671b at the battery 20 end and the positive working contact 671b at the host 10 end are in contact, the positive signal contact 671 at the battery 20 end and the positive signal contact 671 at the host 10 end are in contact, and the negative contact 672 that was already in contact is also in contact, when all three contacts are connected at the same time, the main control board controls the switch device 2 and the transducer 3 to work through the program setting, so that the machine can be turned on. That is, when the battery 20 is rotated 45 degrees (second position), it is only used to charge the battery 20. When the battery 20 is rotated 135 degrees (third position), the machine can be turned on and worked. In addition, with the marking on the upper surface of the plug slot 61, a stronger child lock function can be provided.

[0049] Specifically, in order to cater to the needs of more customers for switch preferences, the switch device 2 here includes a toggle switch 21 and a push switch 22, wherein the toggle switch 21 is used to control the operation of the ultrasonic scalpel by toggling, and the push switch 22 is used to control the operation of the ultrasonic scalpel by pressing.

[0050] Specifically, a switch rail component 23 is provided on one side of the handheld housing. An FPC button PCB board 24 is provided at the lower end of the switch rail component 23. One end of the FPC button PCB board 24 is electrically connected to the main board 4, and the FPC button PCB board 24 has a toggle switch 21 and a push switch 22 as electrical keys. A rail groove 231 is provided on the switch rail component 23. The inner side of the rail groove 231 has partitioned protrusions 231a. A switch lever 25 is slidably connected to the outer side of the switch rail component 23. The switch lever 25 includes a slide rail end 251 and a lever end 252, wherein the slide rail end 251 is located on the inner side and forms a... The slide rail is T-shaped and slides in conjunction with the track groove 231. The inner side of the slide rail end 251 is provided with a first switch groove 251a and a second switch groove 251b that can engage with the partition protrusion 231a. When the switch lever 25 is manually moved so that its first switch groove 251a engages with the partition protrusion 231a, the switch device 2 is controlled by the toggle switch 21. When the switch lever 25 is manually moved so that its second switch groove 251b engages with the partition protrusion 231a, the switch device 2 is controlled by the push switch 22. In practice, a mark is made on the lever end 252 so that the user can know which direction to move the lever to determine which switch state is being engaged.

[0051] Specifically, to achieve diversified functions of the main unit 10, a main unit cover 30 is connected to the lower end of the main unit 10. A maintenance cover 310 is provided at the lower end of the main unit cover 30. The main unit cover 30 and the maintenance cover 310 are magnetically attached to each other by a magnetic attachment assembly 301. The inner side of the maintenance cover 310 is provided with a tool changing groove 311 and a tool storage hole 312. The tool changing groove 311 is used to loosen the locking screw of the transducer 3. The tool storage hole 312 stores maintenance tools. The tool changing groove 311 has a hexagonal or square groove to match the shape of the nut at the end of the transducer 3. This allows the nut fixing the blade 31 to be opened directly with the maintenance cover 310 for tool replacement, which is very convenient. After use, the maintenance cover 310 can be directly attached to the main unit cover 30, making it less likely to be lost.

[0052] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A portable ultrasonic scalpel, comprising a main unit and a battery, wherein the battery is mounted on one side of the main unit, characterized in that: The main unit includes a handheld housing, a switch device, a transducer, a motherboard, and a heat dissipation mechanism. The motherboard, transducer, and heat dissipation mechanism are arranged sequentially on the inner side of the main unit. The heat dissipation mechanism includes a cooling fan and heat dissipation holes. The cooling fan is installed on one side of the transducer and can dissipate heat from the transducer while exhausting hot air through the heat dissipation holes. The switch device is installed on one side of the handheld housing and is used to control the opening and closing of the ultrasonic scalpel.

2. The portable ultrasonic scalpel as described in claim 1, characterized in that: The heat dissipation mechanism also includes a heat dissipation duct. A heat dissipation duct is formed between the inner side of the handheld housing, the outer side of the transducer, and the cooling fan. Air enters from the bottom of the main unit, passes through the duct, and is then dissipated through the heat dissipation holes.

3. A portable ultrasonic scalpel as described in claim 2, characterized in that: The heat dissipation air duct includes an air inlet duct, a heat exchange air duct, and an air outlet duct. The transducer has a capillary air inlet hole on the side near the blade, and the capillary air inlet hole and the transducer form an air inlet duct. The transducer body has a large space heat exchange air duct above it. The cooling fan forms the air outlet duct. The cooling fan includes an air inlet, a main fan, and an air outlet. The air inlet is located on one side of the transducer, and the air outlet is located on both sides of the main fan, just aligned with the heat dissipation hole.

4. A portable ultrasonic scalpel as described in claim 1, characterized in that: The upper end of the main unit is detachably equipped with a battery via a plug-in mechanism. The plug-in mechanism includes a plug groove, a plug connector, a first rotation limiting protrusion, a first limiting slide, a second rotation limiting protrusion, and a second limiting slide. The upper end of the main unit is recessed to form a plug groove. The inner side of the plug groove is provided with a first contact group. The side wall of the plug groove is provided with a first limiting slide and a second limiting slide from top to bottom. The lower end of the battery is provided with a plug connector. The plug connector is provided with a first rotation limiting protrusion and a second rotation limiting protrusion from top to bottom. The bottom end of the plug connector is provided with a second contact group. The first rotation limiting protrusion slides in a limiting engagement with the first limiting slide, and the second rotation limiting protrusion slides in a limiting engagement with the second limiting slide.

5. A portable ultrasonic scalpel as described in claim 4, characterized in that: Both the first contact group and the second contact group include a positive contact and a negative contact, wherein the negative contact is located in the middle and the positive contact is located outside the negative contact.

6. A portable ultrasonic scalpel as described in claim 5, characterized in that: The positive contact includes a charging positive contact and a working positive contact. The charging positive contact, the working positive contact, and the negative contact are distributed at right angles in a three-point manner. It also includes a signal contact, which is located on the other side of the working positive contact and is symmetrically distributed with the working positive contact.

7. A portable ultrasonic scalpel as described in claim 6, characterized in that: The first limiting slide includes a first inlet groove, a first concave point, and a second concave point. The first inlet groove and the first concave point form a first front section, and the first concave point and the second concave point form a first rear section. The arc surface of the first front section forms a 45-degree angle with the axis of the insertion groove, and the first rear section forms a 90-degree angle with the axis of the insertion groove. The second limiting slide includes a second inlet groove, a third concave point, and a fourth concave point. The second inlet groove and the third concave point form a second front section, and the third concave point and the fourth concave point form a second rear section. The arc surface of the second front section forms a 45-degree angle with the axis of the insertion groove, and the first rear section forms a 90-degree angle with the axis of the insertion groove. The charging positive contact is vertically distributed with the first protrusion, and when the first protrusion enters the first inlet groove, the second protrusion also enters the second inlet groove.

8. A portable ultrasonic scalpel as described in claim 1, characterized in that: The switching device includes a toggle switch and a push switch, wherein the toggle switch is used to control the operation of the ultrasonic scalpel by toggling, and the push switch is used to control the operation of the ultrasonic scalpel by pressing.

9. A portable ultrasonic scalpel as described in claim 8, characterized in that: A switch rail is provided on one side of the handheld housing. An FPC button PCB board is provided at the lower end of the switch rail. One end of the FPC button PCB board is electrically connected to the main board and has a toggle switch and a push switch. The switch rail has a rail groove with partition protrusions on the inner side. A switch lever is slidably connected to the outer side of the switch rail. The switch lever includes a slide rail end and a lever end. The slide rail end is located on the inner side and is T-shaped and slides with the rail groove. The inner side of the slide rail end has a first switch groove and a second switch groove that can engage with the partition protrusions. When the switch lever is manually moved so that the first switch groove engages with the partition protrusions, the switch device is controlled as a toggle switch. When the switch lever is manually moved so that the second switch groove engages with the partition protrusions, the switch device is controlled as a push switch. It should be noted that the length of the slide rail end is less than the length of the rail groove.

10. A portable ultrasonic scalpel as described in claim 1, characterized in that: The lower end of the main unit is also connected to a main unit cover, and the lower end of the main unit cover is provided with a maintenance cover. The main unit cover and the maintenance cover are magnetically attached to each other by a magnetic suction assembly. The inner side of the maintenance cover is provided with a tool changing groove and a tool storage hole. The tool changing groove is used to loosen the transducer locking screw, and the tool storage hole stores maintenance tools.

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