Automatic drawing liposuction needle mechanism and liposuction instrument

Abstract

The invention relates to an automatic drawing liposuction needle mechanism and a liposuction instrument, and relates to the field of liposuction instruments, the automatic drawing liposuction needle mechanism comprises a liposuction needle assembly, a linear motor and a quick release assembly, and an output shaft of the linear motor is detachably connected with one end of the liposuction needle assembly through the quick release assembly. The automatic liposuction device has the beneficial effects that the linear motor is adopted to drive the liposuction needle assembly to do linear reciprocating motion, so that automatic drawing of the liposuction needle assembly is achieved, and the labor intensity of medical staff is relieved; twitching is achieved through a mechanical structure, compared with manual operation, twitching frequency and stability are easier to control, and operation precision is high; medical workers are not prone to fatigue, and potential safety hazards are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of liposuction apparatus, in particular to a kind of automatic suction of fat needle mechanism and liposuction instrument. BACKGROUND

[0002] The existing liposuction equipment relies on medical staff to manually operate the suction needle on the liposuction handle to reciprocate, which has the following defects: 1. Fatigue: long time high frequency manual pumping leads to high labor intensity of medical staff.

[0003] 2. Lack of precision: manual control is difficult to maintain the stability of pumping frequency (30-120 times / min) and movement distance 25mm, which affects the liposuction effect.

[0004] 3. Safety hazard: manual operation is prone to loss of control due to fatigue, which poses a safety hazard. SUMMARY

[0005] The technical problem to be solved by the present application is how to automatically pump the liposuction needle.

[0006] The technical solution for solving the above technical problem is as follows: a kind of automatic suction of fat needle mechanism, comprising a liposuction needle assembly, a linear motor and a quick release assembly, the output shaft of the linear motor is detachably connected with one end of the liposuction needle assembly through the quick release assembly.

[0007] The beneficial effects of the present application are: the linear motor is used to drive the linear reciprocating movement of the liposuction needle assembly, so as to realize the automatic pumping of the liposuction needle assembly, and reduce the labor intensity of medical staff; and the pumping is realized by mechanical structure, compared with manual operation, the pumping frequency and stability are more easily controlled, and the operation precision is high; medical staff is not easy to fatigue, and safety hazard is reduced.

[0008] On the basis of the above technical solution, the present application can also be improved as follows.

[0009] Further, the quick release assembly comprises a base assembly, a push block and a spring, one end of the output shaft has a shaft connecting groove, the base assembly is fixedly connected or detachably connected with one end of the liposuction needle assembly, the push block is slidingly installed in the base assembly, the two ends of the spring are respectively abutted with the push block and the base assembly, and the push block is clamped into the shaft connecting groove under the elastic force of the spring, or is moved out of the shaft connecting groove under external force.

[0010] The beneficial effects of the above further scheme are: when installing a new liposuction needle assembly, the output shaft is inserted into the base assembly, the push block is first pushed away by overcoming the elastic force of the spring, and the push block is clamped into the shaft connecting groove under the elastic force of the spring after the output shaft is completely inserted.

[0011] When it is necessary to remove the liposuction needle assembly after use, manually move the toggle block out of the shaft connection slot, and then pull the output shaft out of the base assembly. The quick-release assembly and liposuction needle assembly are disposable products and can be quickly replaced.

[0012] Furthermore, the toggle block is fixedly connected to or integrally formed with a toggle handle, which extends out of the base assembly.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the base assembly extends from the toggle handle, which facilitates the quick removal of the liposuction needle assembly by toggling the toggle block with the toggle handle.

[0014] Furthermore, the base assembly includes a base body and an end cap, with the base body and the end cap being fixedly connected.

[0015] The advantages of adopting the above-mentioned further solution are: the base assembly includes two parts, the base body and the end cap, which is conducive to the processing of parts and reduces the difficulty of processing and assembly.

[0016] Furthermore, the base body includes a support block and a guide block. One end of the support block has a suction through hole, and the other end has a insertion hole. The suction through hole is connected and communicates with one end of the liposuction needle assembly. One end of the guide block is fixedly connected to the middle of one side of the support block. The other end of the guide block extends radially along the insertion hole and is spaced apart on one side of the insertion hole. The end cap is fixedly connected to the guide block, and the actuating block is slidably disposed between the support block and the guide block.

[0017] The beneficial effects of adopting the above-mentioned further solution are: the insertion hole is used for the insertion of the output shaft. After the output shaft is inserted into place, it is limited by the guide block located on one side of the insertion hole to ensure accurate positioning of the output shaft after insertion and a stable insertion structure.

[0018] Furthermore, one end of the actuating block has a U-shaped groove, and both sides of the U-shaped groove have guide protrusions that protrude towards the end cover. The two guide protrusions slide in cooperation with the two opposite sidewalls of the guide block. The opening of the U-shaped groove is set towards one end of the guide block, and the bottom of the U-shaped groove is used to engage with the shaft connecting groove.

[0019] The beneficial effects of adopting the above-mentioned further solution are as follows: The actuating block has a plate-like structure with a U-shaped groove at one end. The plate-like structure is slidably positioned between the support block and the guide block. The U-shaped groove can be inserted into the outside of the output shaft through its opening. That is, after the output shaft is inserted into the insertion hole, it passes through the U-shaped groove and abuts against the guide block for limitation. Subsequently, the bottom of the U-shaped groove engages with the shaft connection groove, realizing the connection between the output shaft and the quick-release assembly. This connection process is convenient to operate, the connection structure is reliable, and the quick-release assembly has a compact structure, small size, and light weight, which will not increase the operational burden on medical staff. The guide protrusion slides with the guide block and is limited between the end cap and the base body, thereby realizing the sliding guidance of the actuating block.

[0020] Furthermore, the end cap has an end cap protrusion on the side facing the base body, and the two ends of the elastic member abut or are fixedly connected to the guide protrusion and the end cap protrusion, respectively.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the elastic element is installed between the guide protrusion and the end cover protrusion, and applies an elastic force to the actuating block to move it into the shaft connection groove.

[0022] Furthermore, the automatically withdrawable liposuction needle mechanism also includes a snap-fit ​​bolt, one end of the output shaft is coaxially threaded to the snap-fit ​​bolt, the sidewall of the snap-fit ​​bolt has the shaft connection groove, and the edge of the snap-fit ​​bolt away from the output shaft has a chamfered structure.

[0023] The advantages of adopting the above-mentioned further solution are: machining the shaft connection groove on the snap-fit ​​bolt facilitates machining and allows for replacement after repeated use and wear, reducing maintenance costs. The snap-fit ​​bolt end is equipped with a chamfered structure, which guides the quick-release assembly when inserted into its insertion hole. Simultaneously, when the chamfered structure contacts the bottom of the U-shaped groove, it gradually pushes away the actuating block, allowing the snap-fit ​​bolt to be smoothly inserted until its end face abuts against the guide block.

[0024] Furthermore, the automatic liposuction needle mechanism also includes a liposuction handle housing and a limit switch. The linear motor and the limit switch are both fixed inside the liposuction handle housing. The other end of the liposuction needle assembly is located outside the liposuction handle housing. The limit switch is located on the movement path of the end of the output shaft away from the liposuction needle assembly.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the limit switch is used to limit the extreme position of the linear movement of the output shaft.

[0026] The present invention also provides a liposuction device, including the aforementioned automatically withdrawing liposuction needle mechanism. Attached Figure Description

[0027] Figure 1One of the three-dimensional views of an automatically withdrawing liposuction needle mechanism of the present invention; Figure 2 This is the second three-dimensional view of an automatically withdrawing liposuction needle mechanism according to the present invention; Figure 3 This is an exploded view of an automatically withdrawing liposuction needle mechanism according to the present invention; Figure 4 This is a cross-sectional view of an automatically withdrawing liposuction needle mechanism according to the present invention; Figure 5 for Figure 4 A magnified view of part A of the quick-release component; Figure 6 This is a three-dimensional view of the toggle block of the present invention; Figure 7 This is a three-dimensional view of the base body of the present invention; Figure 8 This is one of the three-dimensional views of the end cap of the present invention; Figure 9 This is the second three-dimensional view of the end cap of the present invention.

[0028] The attached diagram lists the components represented by each number as follows: 1. Liposuction needle assembly; 2. Linear motor; 21. Output shaft; 22. Shaft connecting groove; 3. Quick-release assembly; 31. Base assembly; 32. Actuating block; 321. U-shaped groove; 322. Guide protrusion; 323. First positioning hole; 33. Elastic element; 34. Base body; 341. Support block; 342. Guide block; 343. Suction through hole; 344. Insertion hole; 345. Connecting nozzle; 346. Circular groove; 35. End cap; 351. End cap protrusion; 352. Second positioning hole; 353. Positioning plane; 354. Handle groove; 36. Actuating handle; 4. Clip-on bolts; 5. Limit switches. Detailed Implementation

[0029] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0030] like Figures 1-9 As shown, this embodiment provides an automatically withdrawing liposuction needle mechanism, including a liposuction needle assembly 1, a linear motor 2, and a quick-release assembly 3. The output shaft 21 of the linear motor 2 is detachably connected to one end of the liposuction needle assembly 1 through the quick-release assembly 3.

[0031] A linear motor 2 drives the liposuction needle assembly 1 to move linearly back and forth, thereby realizing the automatic traction of the liposuction needle assembly 1, reducing the labor intensity of medical staff; and the traction is achieved through a mechanical structure, which makes the traction frequency and stability easier to control and the operation precision higher compared with manual operation; medical staff are less likely to get tired, reducing safety hazards.

[0032] The linear motor 2 can be a linear magnetic shaft motor or other types of motors that can drive the liposuction needle assembly 1 to move linearly. The linear motor 2 can ensure a pumping frequency of 30-120 times / minute, a linear reciprocating motion stroke of 25mm, high motion stability, and can ensure liposuction effect. Of course, the stroke can also be set to other values ​​as needed. The stroke can be adjusted by selecting motors with different strokes or by setting the stroke limit mechanism (such as the limit switch 5 in the following embodiment) at different positions to limit the movement range of the motor output shaft.

[0033] The liposuction needle assembly 1 includes a liposuction needle and a cannula. The cannula is fixed inside the liposuction handle housing. One end of the liposuction needle is slidably installed inside the cannula, and the other end of the liposuction needle is detachably connected to the output shaft 21 of the linear motor 2 via the quick-release assembly 3. During use, the liposuction needle reciprocates inside the cannula, preventing the cannula from being blocked by fat.

[0034] Based on the above technical solution, the quick-release assembly 3 includes a base assembly 31, a toggle block 32, and an elastic element 33. One end of the output shaft 21 has a shaft connection groove 22. The base assembly 31 is fixedly connected to or detachably connected to one end of the liposuction needle assembly 1. The toggle block 32 is slidably installed in the base assembly 31. Both ends of the elastic element 33 abut against the toggle block 32 and the base assembly 31, respectively. The toggle block 32 is engaged in the shaft connection groove 22 under the elastic force of the elastic element 33, or moved out of the shaft connection groove 22 under the action of external force.

[0035] When installing the new liposuction needle assembly 1, insert the output shaft 21 into the base assembly 31. First, overcome the elastic force of the elastic element 33 to push the actuating block 32 away. After the output shaft 21 is fully inserted, the actuating block 32 is engaged in the shaft connecting groove 22 under the action of the elastic force of the elastic element 33.

[0036] When it is necessary to remove the liposuction needle assembly 1 after use, manually move the toggle block 32 to move it out of the shaft connection groove 22, and then pull the output shaft 21 out of the base assembly 31. The quick-release assembly 3 and the liposuction needle assembly 1 are disposable products and can be quickly replaced.

[0037] Based on the above technical solution, the toggle block 32 is fixedly connected to or integrally formed with a toggle handle 36, and the toggle handle 36 extends out of the base assembly 31.

[0038] The base assembly 31 extends from the toggle handle 36, which facilitates the quick removal of the liposuction needle assembly 1 by moving the toggle block 32 through the toggle handle 36.

[0039] Based on the above technical solution, the base assembly 31 includes a base body 34 and an end cap 35, wherein the base body 34 and the end cap 35 are fixedly connected.

[0040] The base assembly 31 includes two parts: the base body 34 and the end cap 35, which facilitates the processing of parts and reduces the difficulty of processing and assembly.

[0041] Based on the above technical solution, the base body 34 includes a support block 341 and a guide block 342. One end of the support block 341 has a suction through hole 343, and the other end has a insertion hole 344. The suction through hole 343 is connected and communicates with one end of the liposuction needle assembly 1. One end of the guide block 342 is fixedly connected to the middle of one side of the support block 341. The other end of the guide block 342 extends radially along the insertion hole 344 and is spaced apart on one side of the insertion hole 344. The end cap 35 is fixedly connected to the guide block 342. The actuating block 32 is slidably disposed between the support block 341 and the guide block 342.

[0042] The insertion hole 344 is used for the output shaft 21 to be inserted. After the output shaft 21 is inserted into the hole, it is limited by the guide block 342 located on one side of the insertion hole 344 to ensure that the output shaft 21 is accurately positioned axially after insertion and the insertion structure is stable.

[0043] Specifically, the suction through-hole 343 is threadedly connected to one end of the liposuction needle assembly 1. More specifically, the suction through-hole 343 is threadedly connected to the liposuction needle.

[0044] like Figure 7 As shown, a connecting nozzle 345 is integrally formed on the side of the suction port 343 facing away from the liposuction cannula assembly 1, and the inner hole of the connecting nozzle 345 communicates with the suction port 343. The connecting nozzle 345 is used to connect to a negative pressure suction tube, which is connected to a negative pressure pump, thereby utilizing negative pressure to suction fat. In other words, the liposuction cannula assembly 1 is connected to the negative pressure suction tube through the suction port 343 and the connecting nozzle 345.

[0045] Specifically, the end cap 35 and the guide block 342 are fixedly connected by at least two screws spaced apart.

[0046] Among them, such as Figure 7As shown, the guide block 342 has a circular groove 346 coaxially arranged with the insertion hole 344 in the middle of the side facing the support block 341. The circular groove is used to abut against the end sidewall of the output shaft 21 to radially position the output shaft 21. It should be noted that the circular groove can be a complete circle, or it can be a groove structure with at least two concentric arc-shaped edges formed by cutting off a part of the circular groove, as long as it can radially position the output shaft 21.

[0047] Based on the above technical solution, one end of the actuating block 32 has a U-shaped groove 321, and both sides of the U-shaped groove 321 have guide protrusions 322 that protrude toward the end cover 35. The two guide protrusions 322 slide in cooperation with the two opposite side walls of the guide block 342. The opening of the U-shaped groove 321 is set toward one end of the guide block 342, and the bottom of the U-shaped groove 321 is used to engage with the shaft connecting groove 22.

[0048] The actuating block 32 is a plate-like structure with a U-shaped groove 321 at one end. The plate-like structure is slidably positioned between the support block 341 and the guide block 342. The U-shaped groove 321 can be inserted into the outside of the output shaft 21 through its opening. That is, after the output shaft 21 is inserted into the insertion hole 344, it passes through the U-shaped groove 321 and abuts against the guide block 342 for limitation. Subsequently, the bottom of the U-shaped groove 321 engages with the shaft connecting groove 22, thus connecting the output shaft 21 to the quick-release assembly 3. This connection process is convenient, the connection structure is reliable, and the quick-release assembly 3 has a compact structure, small size, and light weight, without increasing the operational burden on medical personnel. The guide protrusion 322 slides with the guide block 342 and is limited between the end cap 35 and the base body 34, thereby achieving sliding guidance for the actuating block 32.

[0049] Based on the above technical solution, the end cap 35 has an end cap protrusion 351 on the side facing the base body 34, and the two ends of the elastic member 33 are respectively abutted or fixedly connected to the guide protrusion 322 and the end cap protrusion 351.

[0050] The elastic element 33 is installed between the guide protrusion 322 and the end cap protrusion 351, and applies an elastic force to the actuating block 32 to move it into the shaft connecting groove 22.

[0051] Specifically, the end cap 35 has a plate-like structure, with two end cap protrusions 351 spaced laterally. These two protrusions 351 are also located on both sides of the guide block 342. The two guide protrusions 322 of the actuating block 32 correspond one-to-one with the two end cap protrusions 351 and are spaced vertically. Two elastic elements 33 are also correspondingly provided, each located one-to-one between the end cap protrusions 351 and the guide protrusions 322. That is, each pair of corresponding end cap protrusions 351 and guide protrusions 322 has one elastic element 33. The portion of the end cap 35 located between the two end cap protrusions 351 is attached to the guide block 342 and connected by screws. The portion of the end cap 35 opposite to the guide protrusions 322 is attached to the guide protrusions 322.

[0052] In one specific embodiment, both the end cap 35 and the actuating block 32 are circular plate-like structures, but they can also be other shapes, such as polygonal plate-like structures.

[0053] Preferably, the end of the guide protrusion 322 facing the end cap protrusion 351 has a first positioning hole 323, and the end of the end cap protrusion 351 facing the guide protrusion 322 has a second positioning hole 352. Both the first positioning hole 323 and the second positioning hole 352 are blind holes, and the two ends of the elastic member 33 are respectively located in the corresponding first positioning hole 323 and second positioning hole 352. The first positioning hole 323 and the second positioning hole 352 are used to position the elastic member 33.

[0054] Among them, the elastic element 33 is a spring.

[0055] Specifically, a handle groove 354 is formed between the two end cap protrusions 351 of the end cap 35. A toggle handle 36 is located on the side of the toggle block 32 facing the end cap 35. One end of the toggle handle 36 is fixed to the toggle block 32, and the other end passes through the handle groove 354 and extends to the outside of the end cap 35. In one specific example, such as... Figure 6 As shown, the toggle handle 36 has an arc-shaped plate structure.

[0056] Specifically, the end cap 35 has a positioning plane 353 at its edge, and the base body 34 (specifically, the side wall of the connecting nozzle 345) has a main positioning plane. When installing the end cap 35, the positioning plane 353 and the main positioning plane abut against each other to ensure that the installation position of the end cap 35 is accurate.

[0057] Based on the above technical solution, the automatic liposuction needle mechanism also includes a locking bolt 4. One end of the output shaft 21 is coaxially threadedly connected to the locking bolt 4. The side wall of the locking bolt 4 has the shaft connection groove 22, and the edge of the locking bolt 4 away from the output shaft 21 has a chamfered structure.

[0058] The shaft connection groove 22 is machined on the snap-fit ​​bolt 4, which facilitates machining and allows for replacement after repeated use and wear, reducing maintenance costs. The snap-fit ​​bolt 4 has a chamfered structure at its end, which can guide the quick-release assembly 3 to center when it is inserted into the insertion hole 344 of the quick-release assembly 3. At the same time, when the chamfered structure contacts the bottom of the U-shaped groove 321, it can gradually push away the actuating block 32, so that the snap-fit ​​bolt 4 can be smoothly inserted into the position where its end face abuts against the guide block 342.

[0059] Specifically, the shaft connection groove 22 is an annular groove formed on the side wall of the snap-fit ​​bolt 4.

[0060] Based on the above technical solution, the automatic liposuction needle mechanism also includes a liposuction handle housing and a limit switch 5. The linear motor 2 and the limit switch 5 are both fixed inside the liposuction handle housing. The other end of the liposuction needle assembly 1 is located outside the liposuction handle housing. The limit switch 5 is located on the movement path of the end of the output shaft 21 away from the liposuction needle assembly 1.

[0061] Limit switch 5 is used to limit the extreme positions of linear movement of output shaft 21.

[0062] The liposuction handle housing also has a guide cylinder fixed inside. The guide cylinder is located near the limit switch 5. The end of the output shaft 21 always moves back and forth inside the guide cylinder. The end face of the output shaft 21 away from the liposuction needle assembly 1 is used to trigger the limit switch 5. The guide cylinder guides the movement of the output shaft 21 and ensures the stability of its reciprocating movement.

[0063] Specifically, both the linear motor 2 and the limit switch 5 are connected to the controller of the liposuction device. After receiving the trigger signal from the limit switch 5, the controller controls the output shaft 21 of the linear motor 2 to switch the direction of movement. The output shaft 21 of the linear motor 2 moves away from the limit switch 5 to the limit position and then changes direction to move, thus forming a linear reciprocating movement.

[0064] In one specific embodiment, the operation of the automatically withdrawn liposuction needle mechanism is as follows: When installing the new liposuction needle assembly 1, the liposuction needle is first threadedly connected to the suction through hole 343 of the quick-release assembly 3. Then, the output shaft 21 and its end locking bolt 4 are inserted into the base assembly 31 through the insertion hole 344. The locking bolt 4, through the chamfered structure at its end, first overcomes the elastic force of the elastic element 33 to push the actuating block 32 away. The locking bolt 4 is fully inserted until its end face abuts against the guide block 342 and is located in the circular groove 346. At the same time, the actuating block 32 moves towards the locking bolt 4 under the action of the elastic force of the elastic element 33, and the bottom of the U-shaped groove 321 is engaged with the shaft connecting groove 22.

[0065] When it is necessary to remove the liposuction needle assembly 1 after use, manually move the toggle handle 36 on the toggle block 32 to move the bottom of the U-shaped groove 321 of the toggle block 32 out of the shaft connection groove 22, release the limit on the locking bolt 4, and pull the output shaft 21 out of the base assembly 31. The quick-release assembly 3 and the liposuction needle assembly 1 are disposable products and can be quickly replaced.

[0066] This embodiment also provides a liposuction device, including the aforementioned automatically withdrawing liposuction needle mechanism.

[0067] In this embodiment, the liposuction device also includes a negative pressure pump, which is connected to the connecting nozzle 345 of the quick-release assembly 3 via a negative pressure suction pipe. An automatically withdrawable liposuction needle mechanism constitutes the liposuction handle, and the liposuction operation is performed by operating the liposuction handle.

[0068] In the description of this invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0070] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-twitching liposuction needle mechanism, characterized by, The utility model provides a kind of liposuction needle assembly (1), linear motor (2) and quick release assembly (3), the output shaft (21) of linear motor (2) is detachably connected with one end of liposuction needle assembly (1) by quick release assembly (3).

2. A self-twitching suctioning needle mechanism according to claim 1, wherein, The quick release assembly (3) includes a base assembly (31), a dial block (32), and a resilient member (33). One end of the output shaft (21) has a shaft connecting groove (22). The base assembly (31) is fixedly connected or detachably connected to one end of the liposuction needle assembly (1). The dial block (32) is slidingly installed in the base assembly (31). The resilient member (33) has two ends that are respectively in contact with or fixedly connected to the dial block (32) and the base assembly (31). The dial block (32) is clamped into the shaft connecting groove (22) under the elastic force of the resilient member (33) or is moved out of the shaft connecting groove (22) under external force.

3. A self-twitching suctioning needle mechanism according to claim 2, wherein, The dial block (32) is fixedly connected or integrally formed with a dial handle (36), and the dial handle (36) extends out of the base assembly (31).

4. The self-twitching suctioning needle mechanism according to claim 2, wherein, The base assembly (31) includes a base body (34) and an end cover (35), and the base body (34) is fixedly connected to the end cover (35).

5. A self-twitching suctioning needle mechanism according to claim 4, wherein, The base body (34) includes a support block (341) and a guide block (342). One end of the support block (341) has a suction through hole (343), and the other end has a plug-in hole (344). The suction through hole (343) is connected and communicated with one end of the liposuction needle assembly (1). One end of the guide block (342) is fixedly connected to the middle part of one side of the support block (341). The other end of the guide block (342) extends radially along the plug-in hole (344) and is spaced apart from one side of the plug-in hole (344). The end cover (35) is fixedly connected to the guide block (342), and the dial block (32) is slidingly arranged between the support block (341) and the guide block (342).

6. A self-twitching suctioning needle mechanism according to claim 5, wherein, One end of the dial block (32) has a U-shaped groove (321), and both sides of the U-shaped groove (321) have guide protrusions (322) protruding towards the end cover (35). The two guide protrusions (322) are slidingly matched with the two opposite side walls of the guide block (342). The slot opening of the U-shaped groove (321) is arranged towards one end of the guide block (342), and the groove bottom of the U-shaped groove (321) is used for clamping with the shaft connecting groove (22).

7. A self-twitching suctioning needle mechanism according to claim 6, wherein One side of the end cover (35) towards the base body (34) has an end cover protrusion (351), and the two ends of the resilient member (33) are respectively in contact with or fixedly connected to the guide protrusions (322) and the end cover protrusion (351).

8. The self-twitching suctioning needle mechanism according to claim 2, wherein, It also includes a clamping bolt (4), one end of the output shaft (21) is coaxially threadedly connected with the clamping bolt (4), the side wall of the clamping bolt (4) has the shaft connecting groove (22), and the end edge of the clamping bolt (4) away from the output shaft (21) has a chamfer structure.

9. A self-twitching lipoaspiration needle mechanism according to any one of claims 1-8, characterized in that, Further comprising a liposuction handle shell and a limit switch (5), the linear motor (2) and the limit switch (5) are fixed in the liposuction handle shell, the other end of the liposuction needle assembly (1) is located outside the liposuction handle shell, and the limit switch (5) is located on the moving path of the end of the output shaft (21) away from the liposuction needle assembly (1).

10. A liposuction apparatus, characterized by, An automatic lancing liposuction needle mechanism comprising any one of claims 1-9.

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