Electric endoscope anastomat with reusable anastomat main machine

Abstract

The invention discloses an electric endoscope anastomat with a reusable anastomat main machine. The electric endoscope anastomat comprises the anastomat main machine, a protective shell, an adapter and a nail box assembly. The protective shell is detachably installed outside the anastomat main machine, and when the protective shell is installed outside the anastomat main machine, the protective shell can play a role of a sterile barrier; one end of the adapter is connected with the protective shell, the other end of the adapter is connected with the nail box assembly, and the anastomat host can communicate with the protective shell and the adapter; wherein protective shell information is stored in the protective shell, adapter information is stored in the adapter, and the anastomat host can read the protective shell information and the adapter information. The main machine part of the anastomat can be repeatedly used, unnecessary waste is reduced, the medical burden of a patient is reduced, and pollution of medical waste to the environment is reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to an electric laparoscopic stapler with a reusable stapler main unit. Background Art

[0002] With the development of medicine and product research and development, more and more multifunctional staplers are being used in clinical practice. Their scope of application has expanded to various fields such as gastrointestinal surgery, hepatobiliary surgery, thoracic surgery, urology, and gynecology, making them one of the indispensable tools for doctors. In surgical procedures, medical laparoscopic cutting staplers have become an indispensable auxiliary medical device in the process of suturing human tissue. The use of laparoscopic cutting staplers has many advantages, such as less bleeding during surgery, shorter operation time, reduced manual operation errors, avoidance of infection, and faster postoperative functional recovery. Electric laparoscopic staplers are one of the more commonly used medical staplers. Electric laparoscopic staplers, combined with disposable stapler cartridges, are suitable for tissue resection, transection, and anastomosis in abdominal, obstetrics and gynecology, pediatric, and thoracic surgeries. They can also be used for resection and transection of liver parenchyma, liver blood vessels, and gallbladder ducts.

[0003] Currently, most electric laparoscopic staplers in the existing technology are of a single-use structure. After use, the entire device is disposed of as medical waste. The overall product cost is high, which brings a large economic burden to patients after use and generates more medical waste for hospitals. In addition, because the battery is single-use, it causes high environmental pollution after abandonment. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A reusable electric laparoscopic stapler comprises: a stapler main unit 1, a protective shell 2, an adapter 3 and a stapler magazine assembly; the protective shell 2 is detachably mounted on the outside of the stapler main unit 1, and when mounted on the outside of the stapler main unit 1, it can function as a sterile barrier; one end of the adapter 3 is connected to the protective shell 2, and the other end of the adapter 3 is connected to the stapler magazine assembly, and the stapler main unit 1 can communicate with the protective shell 2 and the adapter 3; wherein the protective shell 2 stores protective shell information, and the adapter 3 stores adapter information, and the stapler main unit 1 can read the protective shell information and the adapter information.

[0006] Furthermore, the stapler main unit 1 includes: a handle housing 11, a motor 13, a circuit control main board 14, a handle communication connector 19, and a motor output shaft 20; the motor 13 and the circuit control main board 14 are arranged in the handle housing 11, and the motor output shaft 20 is connected to the motor 13 for outputting the rotation of the motor 13.

[0007] Furthermore, after the stapler main unit 1 is installed with the protective shell 2, the adapter 3 and the stapler magazine assembly, communication with the protective shell 2 and the adapter 3 can be performed through the handle communication connector 19. The circuit control main board 14 reads the protective shell information and the adapter information, and controls the forward and reverse rotation of the motor 13 through a preset program to realize the suturing, cutting and resetting of the stapler magazine assembly.

[0008] Furthermore, the stapler main unit also includes: a motor bracket 12, a rechargeable battery 15, a display screen 16, a firing reset switch 17, and a confirmation switch 18.

[0009] Furthermore, the protective shell 2 includes: a front shell 21, a rear shell 22, a quick connector 23, a rotating shaft 24, and a communication main board 25; wherein the front shell 21 and the rear shell 22 can be fixed together, thereby sealing the anastomosis device main body and acting as a sterile barrier; the rotating shaft 24 is connected to the motor output shaft 20, and the rotation of the motor 13 is transmitted to the adapter 3 through the rotating shaft 24.

[0010] Furthermore, the adapter 3 includes: an adapter connector 31, an adapter circuit board 32, a rotating head 33, a barrel 34 and a screw transmission component 35; the quick connector 23 and the adapter connector 31 are installed and locked, thereby connecting the stapler main unit 1 and the adapter 3 together.

[0011] Furthermore, the adapter circuit main board 32 includes an identification chip, which can identify the specifications and models of the nail magazine assembly.

[0012] Furthermore, the identification chip is a color identification chip 321 , and the color identification chip 321 determines the information of the nail magazine assembly according to the different colors of the positions of the nail magazine shell of the nail magazine assembly.

[0013] Furthermore, the adapter also includes a communication slip ring 37 and an adapter communication connector 36 , and the communication slip ring 37 is communicatively connected to the communication mainboard 25 of the protective housing via the adapter communication connector 36 .

[0014] Furthermore, the communication slip ring 37 includes a fixed part and a rotating part, the fixed part and the rotating part are electrically connected, the rotating part can rotate around the fixed part, the fixed part is fixed on the adapter body, the rotating part cooperates with the rotating head 33 of the adapter, and the rotating part rotates synchronously with the rotating head 33 when the rotating head 33 rotates. When the rotating head 33 rotates, the circuit of the rotating part and the fixed part is always connected, and communication will not be interrupted.

[0015] After adopting such a design, the present invention has at least the following advantages:

[0016] (1) The main body of the stapler of the present invention is reusable, which reduces unnecessary waste, lowers the medical burden on patients, and reduces the pollution of medical waste to the environment.

[0017] (2) The electric laparoscopic stapler of the present invention is highly intelligent, more convenient and safer to use, and effectively reduces the workload of medical staff;

[0018] (3) The electric laparoscopic stapler of the present invention is easy to assemble and disassemble, and has reliable communication;

[0019] (4) The present invention has a simple structure, good effect, low cost and easy process implementation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Figure 1 Schematic diagram of the overall structure of the electric laparoscopic stapler of the present invention;

[0022] Figure 2 Schematic diagram of the cross-sectional structure of the electric laparoscopic stapler of the present invention;

[0023] Figure 3 Schematic diagram of the structure of the stapler host of the present invention;

[0024] Figure 4 This is a schematic diagram of the protective housing structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the protective housing of the present invention;

[0026] Figure 6 This is an enlarged schematic diagram of the protective housing structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the adapter structure of the present invention;

[0028] Figure 8 Schematic diagram of the cross-sectional structure of the adapter of the present invention;

[0029] Figure 9 This is a schematic diagram of the color recognition chip, communication slip ring, and adapter communication connector structure of the present invention;

[0030] Figure 10 This is a schematic diagram of the decomposition of the communication slip ring structure of the present invention;

[0031] Figure 11 This is a partial structural diagram of the fixed part of the communication slip ring of the present invention;

[0032] Figure 12 This is a schematic diagram of the installation of the fixed part of the communication slip ring of the present invention;

[0033] Figure 13 This is a schematic diagram of the overall structure of the fixed part of the communication slip ring of the present invention;

[0034] Figure 14 This is a schematic diagram of the exploded structure of the rotating part of the communication slip ring of the present invention;

[0035] Figure 15 This is a schematic diagram of the overall structure of the rotating part of the communication slip ring of the present invention;

[0036] Figure 16 It is a schematic diagram of the overall structure of the communication slip ring of the present invention.

[0037] Reference numerals: 1 stapler main unit, 2 protective housing, 3 adapter, 11 handle housing, 12 motor bracket, 13 motor, 14 circuit control main board, 15 rechargeable battery, 16 display, 17 trigger reset switch, 18 confirmation switch, 19 handle communication connector, 20 motor output shaft, 21 front housing, 22 rear housing, 23 quick connector, 24 rotating shaft, 31 adapter connector, 32 adapter circuit main board, 321 color is individual chip, 33 rotating head, 331 gear shift, 3 32 steering knob, 34 gun barrel, 35 screw transmission component, 36 adapter communication connector, 37 communication slip ring, 371 slip ring rotating shaft, 3711 slot, 372 slip ring elastic contact fixing seat, 3721 positioning boss, 373 slip ring elastic contact, 374 slip ring electric coil, 3741 slip ring electric coil protrusion, 375 slip ring fixed housing, 3751 slip ring electric coil slot, 3752 slip ring housing through hole, 3753 buckle, 376 slip ring communication connector, 3761 communication connector through hole. DETAILED DESCRIPTION

[0038] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0039] In this document, “upper”, “lower”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0040] In the following, the end of each component closer to the operator is defined as the distal end, and the end farther from the operator is defined as the proximal end. The expressions proximal end and distal end are only used to simplify and clarify the description and should not be understood as any limitation to the present invention.

[0041] See attached Figure 1-14The present application discloses a reusable electric laparoscopic stapler, comprising: a stapler main unit 1, a protective shell 2, an adapter 3 and a stapler magazine assembly; the protective shell 2 is detachably mounted on the outside of the stapler main unit 1, and when the protective shell 2 is mounted on the outside of the stapler main unit 1, it can act as a sterile barrier; one end of the adapter 3 is connected to the protective shell 2, and the other end of the adapter 3 is connected to the stapler magazine assembly, and the stapler main unit 1 can communicate with the protective shell 2 and the adapter 3; wherein the protective shell 2 stores protective shell information, and the adapter 3 stores adapter information, and the stapler main unit 1 can read the protective shell information and the adapter information.

[0042] The stapler main unit 1 includes: a handle housing 11, a motor 13, a circuit control main unit 14, a handle communication connector 19, and a motor output shaft 20. The motor 13 and the circuit control main unit 14 are disposed within the handle housing 11, and the motor output shaft 20 is connected to the motor 13 for outputting the rotation of the motor 13. After the stapler main unit 1 is installed with the protective housing 2, the adapter 3, and the stapler magazine assembly, it can communicate with the protective housing 2 and the adapter 3 via the handle communication connector 19. The circuit control main unit 14 reads the protective housing information and the adapter information, and controls the forward and reverse rotation of the motor 13 through a preset program to achieve suturing, cutting, and resetting of the stapler magazine assembly. The stapler main unit has an independent operating system, and the circuit control main unit 14 also stores information about the stapler main unit, including: production information, model information, number of uses, etc.

[0043] The stapler main unit further comprises a motor bracket 12, a rechargeable battery 15, a display screen 16, a firing reset switch 17, and a confirmation switch 18. The motor 13 is fixed to the motor bracket 12, the rechargeable battery 15 provides power for the entire electric stapler, and the display screen 16 is used to display relevant information about the electric stapler. This information includes, but is not limited to, power-on information, self-test information, protective housing information, and adapter information.

[0044] The protective housing 2 comprises a front housing 21, a rear housing 22, a quick connector 23, a rotating shaft 24, and a communication mainboard 25. The front housing 21 and rear housing 22 can be fastened together to seal the stapler body, acting as a sterile barrier. Preferably, the front housing 21 and rear housing 22 are fastened together using a snap-fit mechanism. The rotating shaft 24 connects to the motor output shaft 20, transmitting the rotation of the motor 13 to the adapter 3 via the rotating shaft 24. The protective housing 2 simultaneously functions as a communication and motion transmission mechanism, as well as providing protection and isolation for the stapler body 1.

[0045] The adapter 3 comprises an adapter connector 31, an adapter circuit board 32, a rotating head 33, a barrel 34, and a screw drive assembly 35. The quick connector 23 and adapter connector 31 are installed and locked together, connecting the stapler body 1 and adapter 3. The quick connector 23 connects the handle body 1 and adapter 3, making installation of the handle body 1 and adapter 3 quick and easy. Once installed, they are stable and secure, allowing for smooth, non-sticky removal of the adapter 3. The adapter circuit board 32 stores adapter information, including the adapter model, expiration date, and number of uses.

[0046] The circuit board 32 further includes an identification chip that can identify the specifications and models of the magazine assembly. Preferably, the identification chip is a color recognition chip 321. The color recognition chip 321 determines information about the magazine assembly, including the specifications and models, based on the different colors of the magazine housing. The adapter also includes a communication slip ring 37 and an adapter communication connector 36. The communication slip ring 37 is connected to the communication board 25 of the protective housing via the adapter communication connector 36. The circuit board 32 transmits the identified magazine assembly information to the stapler main unit 1 via the communication slip ring 37, the adapter communication connector 36, and the communication board 25 of the protective housing. The stapler main unit 1 automatically calls a system preset program that matches the specifications and models of the magazine assembly. The motor output shaft 20 rotates, driving the rotating shaft 24 to rotate, thereby driving the screw 35. The rotation of the screw 35 drives the screw nut forward or backward, causing the magazine assembly to complete the suture cutting. The firing stroke of the magazine assembly is controlled based on the number of revolutions of the motor output shaft 20, ensuring more precise suture cutting dimensions. The adapter 3 is provided with a separate electrical component, which records the adapter information internally. When combined with the handle host 1, protective shell 2 and nail magazine assembly, it has the function of automatically identifying the product model of the nail magazine assembly, and transmits the identified information to the anastomosis device host 1 through the elastic frequency needle. The signal transmission is stable and reliable.

[0047] When the adapter 3 is combined with the protective housing 2 and the stapler main unit 1, it has the function of radially rotating 360°. After the stapler assembly is installed, it has the function of bending the stapler assembly left and right. By turning the teeth 331 of the adapter rotating head 33, the adapter 3 can be radially rotated 360°. By twisting the steering knob 332, the stapler assembly can be bent left and right. Loosening it can keep the stapler assembly at the bent angle, and the bending angle of the stapler assembly can be adjusted according to usage requirements. During surgery, the adapter can be combined with the stapler assembly to complete cutting and suturing at various angles, and at any angle, the adapter can ensure stable and smooth cutting, suturing, and post-cutting resetting of the stapler assembly. In addition, the adapter can also be combined with the stapler main unit and the stapler assembly to detect tissue thickness. The electric stapler will automatically adjust the output speed of the motor according to the tissue thickness, thereby controlling the forward speed of the stapler assembly cutting knife, so as to complete tissue cutting and suturing more safely and effectively.

[0048] Furthermore, the communication slip ring 37 includes a fixed part and a rotating part, the fixed part and the rotating part are electrically connected, the rotating part can rotate around the fixed part, the fixed part is fixed on the adapter body, the rotating part cooperates with the rotating head 33 of the adapter, and the rotating part rotates synchronously with the rotating head 33 when the rotating head 33 rotates. When the rotating head 33 rotates, the circuit of the rotating part and the fixed part is always connected, and communication will not be interrupted.

[0049] Specifically, the fixed portion of the communication slip ring 37 includes a slip ring rotating shaft 371, a slip ring elastic contact fixing base 372, and a slip ring elastic contact 373. The rotating portion of the communication slip ring 377 includes a slip ring coil 374, a slip ring fixing housing 375, and a slip ring communication connector 376. The slip ring elastic contact 373 is in close contact with the slip ring coil 374. There are multiple slip ring elastic contacts 373, each fixed to the slip ring elastic contact fixing base 372. After being fixed to the slip ring elastic contact fixing base 372, each slip ring elastic contact 373 is mounted on the slip ring rotating shaft 371. The slip ring elastic contact fixing base 372 is provided with positioning holes, the number of which corresponds to the number of slip ring elastic contacts 373. The multiple slip ring elastic contacts 373 are respectively disposed in the positioning holes. The positioning holes control the spacing of the slip ring elastic contacts 373, ensuring that the distance between each slip ring elastic contact 373 is the same and consistent with the spacing of the slip ring coil 374. Preferably, the slip ring elastic contact 373 and the slip ring elastic contact fixing seat 372 are fixed by soldering; the welded slip ring elastic contact 373 and the slip ring elastic contact fixing seat 372 are mounted on the slip ring rotating shaft 371; positioning bosses 3721 are provided on both sides of the slip ring elastic contact fixing seat 372, and corresponding positions of the slip ring rotating shaft 371 are provided with retaining grooves 3711. The positioning bosses 3721 and retaining grooves 3711 cooperate to prevent the slip ring elastic contact 373 and the slip ring elastic contact fixing seat 372 from moving forward and backward relative to the slip ring rotating shaft 371. Preferably, there are two positioning bosses 3721 and two retaining grooves 3711 on each side.

[0050] The rotating part of the communication slip ring 37 includes: a slip ring coil 374, a slip ring housing 375, and a slip ring communication connector 376. The slip ring housing 375 is composed of an upper and lower part, preferably, the upper and lower parts are fixed by a buckle 3753; the slip ring coil 374 is fixed by the slip ring housing 375, and the inner surface of the slip ring housing 375 is provided with a slip ring coil groove 3751, and the slip ring coil 374 is installed in the groove slip ring coil 3751; there are multiple slip ring coils 374, and the number of slip ring coil grooves 3751 corresponds to the number of slip ring coils 374; the slip ring coil 374 is provided with a slip ring coil protrusion 3741, and the slip ring housing 375 is provided with a slip ring coil protrusion 3741. A slip ring housing through hole 3752 is provided at a position corresponding to the protrusion 3741 of the slip ring coil, and a communication connector through hole 3761 is provided at a position corresponding to the protrusion 3741 of the slip ring coil. The slip ring coil protrusion 3741 passes through the slip ring housing through hole 3752 and the communication connector through hole 3761 in sequence. After passing through the slip ring housing through hole 3752, the slip ring coil 374 is fixed to the slip ring communication connector 376 by soldering, thereby ensuring that the slip ring coil 374 and the slip ring communication connector 376 are firmly welded.

[0051] The fixed part and the rotating part of the communication slip ring are assembled separately, and the assembled fixed part and the assembled rotating part are assembled together. Since the inner diameter of the slip ring coil 374 is smaller than the cumulative size of the slip ring rotating shaft 371, the slip ring elastic contact fixing seat 372, and the slip ring elastic contact 373, when the slip ring elastic contact 373 cooperates with the slip ring coil 374, since the slip ring elastic contact 373 is an elastic part, it is ensured that the slip ring coil 374 and the slip ring elastic contact 373 can always be in close contact when rotating, ensuring that the line communication will not be interrupted.

[0052] The communication slip ring enables the stapler main unit 1 to detect the installation status of the stapler magazine assembly when used in conjunction with the stapler magazine assembly, and also enables the stapler main unit to detect the specifications and models of the stapler magazine assembly, ensuring that communication will not be interrupted when the rotating head part rotates 360°, thereby satisfying the stapler main unit's real-time detection of the stapler magazine assembly.

[0053] The working process of the electric laparoscopic stapler of this application is as follows:

[0054] After the stapler main unit 1 is turned on, the system performs a self-test to check the communication, the charge level of the rechargeable battery and the display screen;

[0055] Install the disposable protective shell 2, fix the front shell and the rear shell, and the system detects the protective shell 2, reads the information of the protective shell, including the validity period and the number of times it has been used, and records the usage information of the protective shell;

[0056] After the adapter 3 is installed, the system detects the adapter 3 and reads the information of the adapter 3, including: validity period, adapter model, number of uses, and whether the adapter lead screw nut is at the zero position. If the adapter lead screw nut is not at the zero position, the adapter lead screw nut position is automatically reset to zero.

[0057] After the test is completed, the system prompts you to install the disposable nail magazine assembly, determines the specifications and models of the nail magazine assembly through the identification chip, and prompts you to close and reset the nail magazine assembly to check whether the nail magazine assembly is installed in place. At this time, pressing the instrument confirmation button is invalid;

[0058] After the inspection of the nail magazine assembly is completed, the nail magazine assembly is adjusted to the appropriate position by rotating the adapter rotating head and / or the steering knob, and the firing button is pressed to close the nail magazine assembly to clamp the tissue. The light of the instrument firing confirmation button flashes. After pressing the confirmation button, the instrument can be fired. After the firing is completed, long press or double-click the reset button to complete the reset of the instrument, the jaws open, and the nail magazine assembly is removed from the tissue; the nail magazine assembly is adjusted to a straight state, and the firing button is pressed to close the nail magazine assembly. At this time, pressing the firing confirmation button is invalid. At this time, the nail magazine assembly can only be closed and reset, and cannot be fired;

[0059] The stapler body is reusable, while the protective housing and adapter are single-use. After use, the adapter and protective housing are removed and the stapler body is cleaned before reuse. Neither the adapter nor the protective housing can be reused. The used adapter, protective housing, and stapler cartridge assembly are classified as medical waste. The handle body is reusable, reducing unnecessary waste, lowering the medical burden on patients, and minimizing environmental pollution caused by medical waste.

[0060] Those skilled in the art will readily recognize other embodiments of the present invention after considering the invention disclosed in the specification and examples. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered as exemplary only, and the true scope and spirit of the invention are indicated by the claims.

[0061] It should be understood that the present invention is not limited to the exact construction described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A reusable electric laparoscopic stapler comprising: The stapler main unit, protective housing, adapter and stapler magazine assembly; the protective housing is detachably mounted on the outside of the stapler main unit and can act as a sterile barrier when mounted on the outside of the stapler main unit; One end of the adapter is connected to the protective shell, and the other end of the adapter is connected to the stapler magazine assembly. The stapler host can communicate with the protective shell and the adapter; wherein the protective shell stores protective shell information, and the adapter stores adapter information, and the stapler host can read the protective shell information and the adapter information.

2. The electric laparoscopic stapler according to claim 1, characterized in that: The stapler main unit includes: a handle housing, a motor, a circuit control mainboard, a handle communication connector, and a motor output shaft; the motor and the circuit control mainboard are arranged in the handle housing, and the motor output shaft is connected to the motor for outputting the rotation of the motor.

3. The electric laparoscopic stapler according to claim 2, characterized in that: After the stapler main unit is installed with the protective shell, adapter and stapler magazine assembly, it can communicate with the protective shell and adapter through the handle communication connector. The circuit control main board reads the protective shell information and adapter information, and controls the forward and reverse rotation of the motor through a preset program to achieve suturing, cutting and resetting of the stapler magazine assembly.

4. The electric laparoscopic stapler according to claim 2 or 3, wherein the stapler main unit further comprises: Motor bracket, rechargeable battery, display screen, firing reset switch, confirmation switch.

5. The electric laparoscopic stapler according to claim 2 or 3, characterized in that: The protective shell includes: a front shell, a rear shell, a quick connector, a rotating shaft, and a communication mainboard; the front shell and the rear shell can be fixed together to seal the anastomosis device host and serve as a sterile barrier; the rotating shaft is connected to the motor output shaft, and the rotation of the motor is transmitted to the adapter through the rotating shaft.

6. The electric laparoscopic stapler according to claim 5, characterized in that: The adapter includes: an adapter connector, an adapter circuit board, a rotating head, a barrel and a screw transmission component; the quick connector and the adapter connector are locked after installation, thereby connecting the stapler main unit and the adapter together.

7. The electric laparoscopic stapler according to claim 6, characterized in that: The adapter circuit main board includes an identification chip, which can identify the specifications and models of the nail magazine assembly.

8. The electric laparoscopic stapler according to claim 7, characterized in that: The identification chip is a color identification chip, which determines the information of the nail magazine assembly according to the different colors of the positions of the nail magazine shell of the nail magazine assembly.

9. The electric laparoscopic stapler according to claim 6, characterized in that: The adapter further comprises a communication slip ring and an adapter communication connector, and the communication slip ring is communicatively connected to the communication mainboard of the protective housing via the adapter communication connector.

10. The electric laparoscopic stapler according to claim 9, characterized in that: The communication slip ring includes a fixed part and a rotating part, the fixed part and the rotating part are electrically connected, the rotating part can rotate around the fixed part, the fixed part is fixed on the adapter body, the rotating part cooperates with the rotating head of the adapter, and the rotating part rotates synchronously with the rotating head when the rotating head rotates. When the rotating head rotates, the circuit between the rotating part and the fixed part is always connected, and communication will not be interrupted.

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