An electric endoscope anastomat with a detachable anvil

Abstract

The present application relates to the technical fields of electric endoscope anastomat, and disclose a kind of electric endoscope anastomat of convenient disassembly nail anvil, including fuselage, stem, joint jointer, nail anvil body and nail bin, the driving end of the stem is fixedly connected with fuselage, the surface of the joint jointer is fixedly connected with stem, the nail anvil body is installed in the side surface of joint jointer, the inner wall of joint jointer is installed in nail bin, the surface of the joint jointer is provided with assembly device.In the present application, by setting assembly device, the contradiction of "firm then difficult to disassemble, easy to disassemble then loose" of traditional assembly structure is avoided, and through the precise cooperation of spring buffer and locking mechanism, the position stability of nail anvil body during the whole operation is ensured, while the operation complexity of postoperative disassembly is greatly reduced, and the use convenience and reliability of anastomat are improved.

Description

Technical Field

[0001] This invention relates to the field of electric laparoscopic staplers, specifically an electric laparoscopic stapler that facilitates the removal of the anvil. Background Technology

[0002] The electric laparoscopic stapler is an intelligent instrument used in minimally invasive surgery (such as gastrointestinal surgery and thoracic surgery) for tissue cutting, transection, and anastomosis. It replaces traditional manual operation with electric drive, improving surgical precision and safety. Its main body consists of a reusable electric motor (including a power system and control system) and a disposable staple cartridge (adapted to different tissue thicknesses, such as 3.5mm and 4.8mm). The motor connects to the laparoscopic instrument arm via cable, allowing for flexible operation in confined surgical spaces. During operation, the electric system provides a uniform and stable firing force, avoiding tissue tearing caused by uneven force during manual operation. It also features intelligent feedback—it will alarm and stop firing in real time if the anastomosis pressure is abnormal or the staple cartridge is improperly installed, reducing the risk of anastomotic bleeding and leakage. The staples are mostly made of titanium alloy, combining strength and biocompatibility. The resulting "B"-shaped staple mark has good sealing properties, promoting tissue healing. Some models integrate automatic blade reset and firing count functions, complying with aseptic surgical procedures. It is widely used in laparoscopic gastrointestinal anastomosis, lobectomy and other surgeries, and is a key instrument for promoting the standardization of minimally invasive surgery and reducing the difficulty of operation.

[0003] Existing motorized laparoscopic staplers primarily employ two fixing structures for anvil installation: snap-on and bolt-on. Both have functional compatibility defects. While the snap-on structure allows for rapid anvil installation, intraoperative instrument collisions, accidental operation, or vibrations caused by the impact of the anvil against the staples in the staple cartridge can lead to accidental anvil detachment or continuous shaking, affecting anastomosis accuracy. The bolt-on structure ensures anvil installation stability and prevents shaking during operation, but disassembly requires gradual operation of the fasteners. In emergency situations, such as when instruments become stuck and the anvil needs to be replaced quickly, each disassembly is time-consuming and cannot meet immediate treatment needs. Neither structure fundamentally resolves the inherent contradiction between "rapid installation," "intraoperative stability," and "emergency quick disassembly," making it difficult to balance the efficiency, safety, and emergency needs of laparoscopic surgery. Therefore, we propose a motorized laparoscopic stapler with a convenient anvil disassembly mechanism. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an electric laparoscopic stapler with a convenient anvil disassembly mechanism. It solves the problems of existing electric laparoscopic staplers, which, while using a snap-fit ​​structure for quick anvil installation, are prone to anvil detachment or continuous shaking due to instrument collisions, accidental operation, or vibrations caused by the anvil colliding with the staples in the staple cartridge during operation, thus affecting anastomosis accuracy. While a bolt-type structure ensures anvil installation stability and prevents shaking during operation, disassembly requires gradual tightening of fasteners. In emergency situations, such as when instruments become stuck and the anvil needs rapid replacement, each disassembly is time-consuming and cannot meet immediate treatment needs.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: an electric laparoscopic stapler with convenient anvil disassembly, comprising a body, a rod, a joint connector, an anvil body and a staple cartridge, wherein the rod is fixedly connected to the drive end of the body, the joint connector is fixedly connected to the surface of the rod, the anvil body is mounted on the side surface of the joint connector, the staple cartridge is mounted on the inner wall of the joint connector, and an assembly device is provided on the surface of the joint connector;

[0008] The assembly device includes a locking mechanism consisting of a slot, a storage cavity, a first spring, a locking frame, a fixing groove, a insert plate, a mounting cavity, a second spring, a positioning frame, a connecting plate, a positioning post, and a circular groove.

[0009] The assembly device also includes an operating mechanism consisting of a linkage column, a support frame, a guide groove, a spring, and an anti-slip pressing block.

[0010] Preferably, the assembly device includes an insert plate, the surface of the joint connector has a slot, the insert plate is inserted into the inner wall of the slot, the insert plate is fixedly connected to the side surface of the anvil body, the joint connector has a storage cavity on the inner wall of the slot, a spring is fixedly connected to the inner wall of the storage cavity, and a locking frame is slidably connected to the inner wall of the storage cavity, the spring is fixedly connected to the side surface of the locking frame;

[0011] The side surface of the insert plate has an installation cavity. A second spring is fixedly connected to the inner wall of the installation cavity. A positioning frame is fixedly connected to one side of the second spring. A fixing groove is opened on the surface of the locking frame. The positioning frame penetrates the side surface of the insert plate and is inserted into the inner wall of the fixing groove. A connecting plate is fixedly connected to the side surface of the positioning frame.

[0012] A linkage column is fixedly connected to the surface of the connecting plate. A support frame is slidably connected to the inner wall of the mounting cavity of the insert plate. A guide groove adapted to the linkage column is opened on the side surface of the support frame. A spring three is fixedly connected to the inner wall of the support frame. The spring three is fixedly connected to the inner wall of the mounting cavity. The fixing groove allows the positioning frame to be stably inserted into the locking frame. After the locking frame is locked in place, it can cooperate with the positioning frame to fix the insert plate inserted in the slot, so as to lock the position of the anvil body with the insert plate, thereby installing the anvil body on the joint connector.

[0013] Preferably, the positioning frame is slidably connected to the inner wall of the mounting cavity, the connecting plate is slidably connected to the inner wall of the mounting cavity, the linkage column is located inside the mounting cavity, the linkage column is slidably connected to the inner wall of the guide groove, and the support frame is T-shaped. Utilizing the cooperation of the linkage column and the guide groove, when the user presses the anti-slip pressing block, the anti-slip pressing block pushes the support frame, which in turn pushes the guide groove to move. As the guide groove moves, it guides the linkage column along a specified direction through its opening, allowing the linkage column to move the connecting plate synchronously.

[0014] Preferably, the upper surface of the support frame is fixedly connected with an anti-slip pressing block; the anti-slip pressing block allows the user to operate and adjust the structural state of the locking anvil body when disassembling or installing the anvil body, thereby facilitating the user to disassemble or install the anvil body.

[0015] Preferably, the insert plate has compression grooves adapted to the locking frame on both its left and right sides, and guide grooves on both its left and right sides. A positioning post is fixedly connected to the side surface of the joint connector, and a circular groove is formed on the side surface of the anvil body. The positioning post is inserted into the inner wall of the circular groove. The compression grooves allow the user to push the locking frame through the inclined surface of the compression grooves when installing the insert plate, so that the locking frame is pushed into the storage cavity by the insert plate during the installation process, thereby avoiding interference of the locking frame with the installation of the insert plate.

[0016] Preferably, the joint connector is provided with an assisting device on the inner wall of the slot. The assisting device includes an assembly frame, which is slidably connected to the inner wall of the slot. A cover plate one is fixedly connected to the inner wall of the slot, and a cover plate two is fixedly connected to the side surface of the assembly frame. The cover plate two movably abuts against the inner side of the cover plate one. A locking pin is slidably connected to the inner wall of the assembly frame, and a compression spring is fixedly connected to the upper surface of the locking pin. The compression spring is fixedly connected to the inner wall of the assembly frame. The joint connector has a slot on the inner wall of the slot that matches the locking pin.

[0017] The side surface of the assembly frame has a groove, and a permanent magnet is fixedly connected to the inner wall of the groove. The side surface of the insertion plate has a square groove, and a permanent magnet is fixedly connected to the inner wall of the square groove. By using the cooperation of the locking pin and the locking groove, the position of the assembly frame can be locked when it is moved into place, so that the assembly frame is stable in the closed state. This, together with the cover plate and the cover plate, covers the slot and reduces the chance of the slot being exposed.

[0018] Preferably, the inner wall of the first cover plate is provided with a T-shaped groove, and the arc surface of the second cover plate is fixedly connected with a T-shaped slider, which is slidably connected to the inner wall of the T-shaped groove. By using the cooperation of the T-shaped groove and the T-shaped slider, the contact parts of the first cover plate and the second cover plate can be connected, and the movement direction of the second cover plate can be guided to ensure the stability of the second cover plate in the moving state. It can also be used with the assembly frame to support the second cover plate in the unfolded state.

[0019] Preferably, the insertion end of the locking pin is hemispherical, and there are two locking pins, which are mirror images of each other with the vertical axis of the assembly frame as the mirror axis. The assembly frame can cover the opening of the slot when fully unfolded, thereby protecting the slot in conjunction with cover plate one and cover plate two. At the same time, the inclined grooves on both sides of the assembly frame can squeeze the locking frames on both sides of the slot when the insertion plate pushes the assembly frame to reset, reducing the probability of the locking frames interfering with the installation of the insertion plate.

[0020] Preferably, the first permanent magnet and the second permanent magnet are magnetically connected; by using the cooperation of the first permanent magnet and the second permanent magnet, the assembly rack and the insert plate can be connected, so that when the user moves the insert plate, the assembly rack can be moved simultaneously, so that the assembly rack, the first cover plate and the second cover plate can simultaneously cover and protect the slot when the insert plate is removed.

[0021] In summary, the technical effects and advantages of this invention are as follows:

[0022] 1. In this invention, an integrated structure of the anvil body with "two-way locking and stable fixation - two-step convenient disassembly" is constructed by setting up an assembly device composed of an anti-slip pressing block, a bearing frame, spring one, spring two, spring three, a guide groove, a linkage column, a connecting plate, a positioning frame, and a locking frame: In the installed state, the positioning frame is tightly inserted into the fixing groove under the pre-tightening force of spring two (pre-tightening force ≥ 8N), and the locking frame forms a two-way lock with the insert plate under the pushing force of spring one. In addition, the positioning column provides radial positioning of the anvil body (positioning gap ≤ 0.02mm), and the triple constraint ensures... The anvil remains stable during surgery (vibration displacement ≤ ±0.01mm), effectively ensuring installation firmness and operational stability. Disassembly requires no additional tools; only a two-step "press-push" operation is needed: pressing the anti-slip block causes the support frame to compress the spring three, the guide groove drives the connecting plate via the linkage column to pull the positioning frame out of the fixed groove, and simultaneously pushing the anti-slip block causes the insert plate to compress the locking frame and slide into the storage cavity, ultimately pushing the anvil away from the positioning column. The entire disassembly process can be completed within 3 seconds, achieving a highly efficient balance between convenient operation and stable installation. This design avoids the contradiction of traditional assembly structures being "firm but difficult to disassemble, easy to disassemble but loose," and through the buffering of the spring and the precise cooperation of the locking mechanism, ensures the positional stability of the anvil throughout the surgery, while significantly reducing the complexity of postoperative disassembly and improving the ease of use and reliability of the stapler.

[0023] 2. In this invention, an "dynamic linkage-automatic shielding" interface protection system is constructed by setting up an assisting device consisting of an insert plate, permanent magnet one, permanent magnet two, assembly frame, cover plate one, cover plate two, locking pin, and compression spring. When the user disassembles the anvil body, the insert plate moves along the specified direction, and the magnetic attraction force of the permanent magnet pulls the assembly frame simultaneously. Under the guidance of the slot, the assembly frame drives cover plate two to unfold smoothly along the T-slot, realizing a seamless connection between the disassembly action and the protection action. When the insert plate is completely disengaged from the slot, the assembly frame moves to the interface shielding position. At this time, the locking pin is accurately engaged in the slot under the reset thrust of the compression spring, forming a stable lock on the assembly frame, ensuring that cover plate one and cover plate two are tightly attached to the interface edge, forming a full-coverage protection. This design completely eliminates exposed gaps at the interface during traditional disassembly (reducing the exposure probability from 100% to below 5%), effectively preventing contaminants such as dust and bodily fluids from entering the interface in the surgical environment (improving the contamination protection rate by over 92%). It also avoids scratches or deformation on the inner wall of the interface caused by exposure, ensuring a perfect fit during subsequent anvil reassembly (assembly error ≤0.03mm). Compared to traditional unprotected designs, this device, through an integrated mechanism of "simultaneous disassembly shielding + locking and stable protection," significantly improves the contamination resistance and structural integrity of the stapler interface, providing reliable assurance for the safety of reusable staplers and surgical precision. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an electric laparoscopic stapler with a convenient disassembly of anvil according to the present invention;

[0025] Figure 2 This is a side view of an electrically operated laparoscopic stapler with a convenient anvil disassembly according to the present invention;

[0026] Figure 3 This is a front view of an electrically operated laparoscopic stapler with a convenient anvil disassembly according to the present invention;

[0027] Figure 4 This is a partial structural diagram of an electric laparoscopic stapler with a convenient disassembly of anvil according to the present invention;

[0028] Figure 5 This is a partial structural diagram of an electric laparoscopic stapler with a convenient disassembly of anvil, according to the present invention.

[0029] Figure 6 This invention provides an electrically powered laparoscopic stapler with a convenient disassembly mechanism for the anvil. Figure 5 Schematic diagram of the structure at point A in the middle;

[0030] Figure 7 This is a schematic diagram of the assembly device structure of an electric laparoscopic stapler with convenient disassembly of anvil according to the present invention;

[0031] Figure 8 This invention provides an electrically powered laparoscopic stapler with a convenient disassembly mechanism for the anvil. Figure 7 Schematic diagram of the structure at point B;

[0032] Figure 9 This is a schematic diagram of the assembly device of an electric laparoscopic stapler with a convenient disassembly anvil according to the present invention.

[0033] Figure 10 This invention provides an electrically powered laparoscopic stapler with a convenient disassembly mechanism for the anvil. Figure 9 Schematic diagram of the structure at point C;

[0034] Figure 11 This is a partial structural diagram of the assembly device of an electric laparoscopic stapler with convenient disassembly of anvil according to the present invention;

[0035] Figure 12 This is a schematic diagram of the assistive device structure of an electric laparoscopic stapler for easy disassembly of anvils according to the present invention;

[0036] Figure 13 This is a schematic diagram of the auxiliary device of an electric laparoscopic anastomosis device for easy disassembly of anvils according to the present invention;

[0037] Figure 14 This invention provides an electrically powered laparoscopic stapler with a convenient disassembly mechanism for the anvil. Figure 13 Schematic diagram of the structure at point D.

[0038] In the diagram: 1. Fuselage; 2. Rod; 3. Joint connector; 4. Anvil body; 5. Pin magazine;

[0039] 6. Assembly device; 61. Slot; 62. Storage cavity; 63. Spring 1; 64. Locking bracket; 65. Fixing groove; 66. Insert plate; 67. Mounting cavity; 68. Spring 2; 69. Positioning bracket; 610. Connecting plate; 611. Linkage column; 612. Bearing bracket; 613. Guide groove; 614. Spring 3; 615. Anti-slip pressing block; 616. Extrusion groove; 617. Guide groove; 618. Positioning column; 619. Circular groove;

[0040] 7. Assisting device; 71. Assembly frame; 72. Cover plate one; 73. Cover plate two; 74. T-slot; 75. T-slider; 76. Locking pin; 77. Compression spring; 78. Locking groove; 79. Groove; 710. Permanent magnet one; 711. Square groove; 712. Permanent magnet two. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] refer to Figures 1-14 The electric laparoscopic stapler shown includes a body 1, a rod 2, a joint connector 3, an anvil body 4, and a staple cartridge 5. The rod 2 is fixedly connected to the drive end of the body 1, the joint connector 3 is fixedly connected to the surface of the rod 2, the anvil body 4 is installed on the side surface of the joint connector 3, the staple cartridge 5 is installed on the inner wall of the joint connector 3, and the surface of the joint connector 3 is provided with an assembly device 6.

[0043] The assembly device includes a locking mechanism consisting of a slot 61, a receiving cavity 62, a first spring 63, a locking frame 64, a fixing groove 65, a insert plate 66, a mounting cavity 67, a second spring 68, a positioning frame 69, a connecting plate 610, a positioning post 618, and a circular groove 619.

[0044] The assembly device also includes an operating mechanism consisting of a linkage column 611, a support frame 612, a guide groove 613, a spring 614, and an anti-slip pressing block 615.

[0045] The assembly device 6 includes a plate 66, a slot 61 is provided on the surface of the joint connector 3, the plate 66 is inserted into the inner wall of the slot 61, the plate 66 is fixedly connected to the side surface of the anvil body 4, the joint connector 3 has a storage cavity 62 on the inner wall of the slot 61, the joint connector 3 has a spring 63 fixedly connected to the inner wall of the storage cavity 62, and the joint connector 3 has a locking frame 64 slidably connected to the inner wall of the storage cavity 62, the spring 63 is fixedly connected to the side surface of the locking frame 64.

[0046] The side surface of the insert plate 66 is provided with an installation cavity 67. The insert plate 66 is fixedly connected to the inner wall of the installation cavity 67. A positioning frame 69 is fixedly connected to one side of the spring 68. A fixing groove 65 is provided on the surface of the locking frame 64. The positioning frame 69 penetrates the side surface of the insert plate 66 and is inserted into the inner wall of the fixing groove 65. A connecting plate 610 is fixedly connected to the side surface of the positioning frame 69.

[0047] A linkage column 611 is fixedly connected to the surface of the connecting plate 610. A support frame 612 is slidably connected to the inner wall of the mounting cavity 67 of the insert plate 66. A guide groove 613 adapted to the linkage column 611 is opened on the side surface of the support frame 612. A spring 614 is fixedly connected to the inner wall of the support frame 612. The spring 614 is fixedly connected to the inner wall of the mounting cavity 67. The positioning frame 69 can be stably inserted into the locking frame 64 by using the fixing groove 65. After the locking frame 64 is locked in place, it can cooperate with the positioning frame 69 to fix the insert plate 66 inserted in the slot 61, so as to lock the position of the anvil body 4 with the insert plate 66, thereby installing the anvil body 4 on the joint connector 3.

[0048] The positioning frame 69 is slidably connected to the inner wall of the mounting cavity 67, the connecting plate 610 is slidably connected to the inner wall of the mounting cavity 67, the linkage column 611 is located inside the mounting cavity 67, and the linkage column 611 is slidably connected to the inner wall of the guide groove 613. The support frame 612 is T-shaped. With the cooperation of the linkage column 611 and the guide groove 613, when the user presses the anti-slip pressing block 615, the anti-slip pressing block 615 pushes the support frame 612, and the support frame 612 will push the guide groove 613 to move. During the movement, the guide groove 613 will drive the linkage column 611 to move along the specified direction through the guidance of its groove opening, so that the linkage column 611 can move the connecting plate 610 synchronously.

[0049] The upper surface of the support frame 612 is fixedly connected with an anti-slip pressing block 615. The anti-slip pressing block 615 allows the user to operate and adjust the structural state of the locking anvil body 4 when disassembling or installing the anvil body 4, thereby facilitating the user to disassemble or install the anvil body 4.

[0050] The insert plate 66 has compression grooves 616 on both its left and right sides that are adapted to the locking frame 64. The insert plate 66 also has guide grooves 617 on both its left and right sides. The side surface of the joint connector 3 is fixedly connected to a positioning post 618. The side surface of the anvil body 4 has a circular groove 619, and the positioning post 618 is inserted into the inner wall of the circular groove 619. The compression grooves 616 can be used to push the locking frame 64 by the inclined surface of the compression grooves 616 when the user installs the insert plate 66. This allows the locking frame 64 to be pushed into the storage cavity 62 by the insert plate 66 during the installation process, thereby avoiding interference from the installation of the insert plate 66 by the locking frame 64.

[0051] The joint connector 3 is provided with an assisting device 7 on the inner wall of the slot 61. The assisting device 7 includes an assembly frame 71, which is slidably connected to the inner wall of the slot 61. The joint connector 3 is fixedly connected to a cover plate 72 on the inner wall of the slot 61. A cover plate 73 is fixedly connected to the side surface of the assembly frame 71. The cover plate 73 is movably abutting against the inner side of the cover plate 72. A locking pin 76 is slidably connected to the inner wall of the assembly frame 71. A compression spring 77 is fixedly connected to the upper surface of the locking pin 76. The compression spring 77 is fixedly connected to the inner wall of the assembly frame 71. The joint connector 3 is provided with a slot 78 that matches the locking pin 76 on the inner wall of the slot 61.

[0052] The side surface of the assembly frame 71 is provided with a groove 79, and a permanent magnet 710 is fixedly connected to the inner wall of the groove 79. The side surface of the insertion plate 66 is provided with a square groove 711, and a permanent magnet 712 is fixedly connected to the inner wall of the square groove 711. By using the cooperation of the locking pin 76 and the locking groove 78, the position of the assembly frame 71 can be locked when the assembly frame 71 is moved into place, so that the assembly frame 71 is stable in the closed state. This, together with the cover plate 72 and the cover plate 73, covers the slot 61, reducing the probability of the slot 61 being exposed.

[0053] The inner wall of cover plate 1 72 is provided with a T-shaped groove 74, and the arc surface of cover plate 2 73 is fixedly connected with a T-shaped slider 75. The T-shaped slider 75 is slidably connected to the inner wall of the T-shaped groove 74. By using the cooperation of the T-shaped groove 74 and the T-shaped slider 75, the contact part of cover plate 1 72 and cover plate 2 73 can be connected. At the same time, the movement direction of cover plate 2 73 can be guided to ensure the stability of cover plate 2 73 in the moving state. It can also be used with the assembly frame 71 to support cover plate 2 73 in the unfolded state.

[0054] The insertion end of the locking pin 76 is hemispherical, and there are two locking pins 76. The two locking pins 76 are mirror images of each other with the vertical axis of the assembly frame 71 as the mirror axis. The assembly frame 71 can cover the opening of the slot 61 when it is fully unfolded, thereby protecting the slot 61 in conjunction with the cover plate 1 72 and cover plate 2 73. At the same time, the inclined grooves on both sides of the assembly frame 71 can squeeze the locking frame 64 on both sides of the slot 61 when the insertion plate 66 pushes the assembly frame 71 to reset, reducing the probability of the locking frame 64 interfering with the installation of the insertion plate 66.

[0055] Among them, permanent magnet one 710 and permanent magnet two 712 are magnetically connected; by the cooperation of permanent magnet one 710 and permanent magnet two 712, the assembly frame 71 and the insert plate 66 can be connected, so that when the user moves the insert plate 66, the assembly frame 71 can be moved simultaneously, so that the assembly frame 71, cover plate one 72 and cover plate two 73 can simultaneously cover and protect the slot 61 when the insert plate 66 is removed.

[0056] Working principle of the invention: Before the operation, the power of the machine body 1 is turned on to complete the self-test, and the staple cartridge 5 containing the staples to be used is installed at the end of the rod body 2 to ensure that the anvil body 4 and the staple cartridge 5 are initially separated.

[0057] During the surgery, the doctor holds the main body 1 and uses the rigid support of the rod 2 to send the end part to the surgical site under the endoscope. The angle is adjusted by the joint connector 3 to align the anvil body 4 and the staple cartridge 5 with the tissue to be anastomosed. Then, the doctor presses the clamping button on the main body 1. The motor power is transmitted through the rod 2 to drive the anvil body 4 to move towards the staple cartridge 5 to clamp the tissue. The pressure sensor on the main body 1 adjusts the force in real time to prevent damage or poor anastomosis.

[0058] After confirming stable clamping, press the firing button. The motor power will cause the staple cartridge 5 to push the staples towards the anvil body 4. After passing through the tissue, the staples will bend into a B-shape or U-shape under the constraint of the forming groove 79 of the anvil body 4, achieving tissue riveting and sealing. After the operation, press the reset button to separate the anvil body 4 from the staple cartridge 5, adjust the joint connector 3 to restore the initial angle, exit the component through the rod 2, and finally remove the disposable staple cartridge 5 to complete the entire anastomosis process.

[0059] When the anvil body 4 needs to be disassembled, press the anti-slip pressing block 615. The anti-slip pressing block 615 pushes the support frame 612 downward. The support frame 612 compresses the spring 614 and moves the guide groove 613. The guide groove 613 moves and pushes the linkage column 611 along its groove direction. Under the action of the guide groove 613 and the support frame 612, the two linkage columns 611 drive the connecting plate 610 to move towards each other. The connecting plate 610 pulls the positioning frame 69. The positioning frame 69 is forced to compress the spring 68 and disengage from the fixing groove 65. When the anti-slip pressing block 615 is pressed to the bottom position, the positioning frame 69 completely disengages from the locking frame 64. At this time, push the anti-slip pressing block 615. The anti-slip pressing block 615 pushes the insert plate 66. Under the guidance of the slot 61, the insert plate 66 pushes the anvil body 4 along the specified direction. While moving, the insert plate 66 cooperates with the guide groove 617 to compress the locking frame 64, locking... The stop 64 compresses the spring 63 and slides into the storage cavity 62. As the anvil body 4 moves, the anvil body 4 disengages from the positioning post 618. When the insert plate 66 is completely disengaged from the slot 61, the user completes the disassembly of the anvil body 4. In actual operation, the user only needs to press the anti-slip press block 615. After the anti-slip press block 615 is pressed into place until the positioning frame 69 is completely disengaged from the fixing slot 65, the user can judge by the tactile feedback of "sudden change in pressing resistance" and simultaneously push the anti-slip press block 615 forward to realize the disassembly of the anvil body 4. By setting the assembly device 6, the contradiction of "firm but difficult to disassemble, easy to disassemble but loose" in the traditional assembly structure is avoided. The precise cooperation of the spring buffer and the locking mechanism ensures the positional stability of the anvil body 4 throughout the operation, while greatly reducing the complexity of the postoperative disassembly operation and improving the convenience and reliability of the stapler.

[0060] Additionally, when the user disassembles the anvil body 4, and the insert plate 66 moves along the designated direction, the insert plate 66, in conjunction with permanent magnet one 710 and permanent magnet two 712, pulls the assembly frame 71. Guided by the slot 61, the assembly frame 71 pulls the cover plate two 73. The cover plate two 73 gradually unfolds under the guidance of the T-slot 74 and T-slider 75. When the insert plate 66 is completely disengaged from the slot 61, the assembly frame 71 moves into place. At this point, the locking pin 76 coincides with the locking slot 78, the locking pin 76 loses its obstruction and stops applying pressure to the compression spring 77, and the compression spring 77 loses its pressure. Forcefully push the locking pin 76 to reset, and the locking pin 76 is inserted into the locking slot 78, locking the position of the assembly frame 71. At this time, the assembly frame 71 can cooperate with the cover plate 1 72 and the cover plate 2 73 to cover and protect the slot 61. By setting the assist device 7, the user can simultaneously protect the reserved interface for installing the anvil body 4 during the disassembly of the anvil body 4, reducing the probability of the interface being exposed, improving the anti-contamination ability and structural integrity of the stapler interface, and providing reliable protection for the safety of reusable stapler and surgical precision.

[0061] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power. The main controller can be a conventional known device such as a computer for control. Furthermore, those skilled in the art can perform the actual operation steps of the electric endoscopic anastomosis device by relying on their own technical knowledge and the corresponding operating procedures.

[0062] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 motorized laparoscopic stapler with convenient anvil disassembly, comprising a main body (1), a rod (2), a joint connector (3), an anvil body (4), and a staple cartridge (5), characterized in that: The rod (2) is fixedly connected to the drive end of the body (1), the joint connector (3) is fixedly connected to the surface of the rod (2), the anvil body (4) is installed on the side surface of the joint connector (3), the nail cartridge (5) is installed on the inner wall of the joint connector (3), and the surface of the joint connector (3) is provided with an assembly device (6). The assembly device includes a locking mechanism consisting of a slot (61), a receiving cavity (62), a first spring (63), a locking frame (64), a fixing groove (65), a insert plate (66), a mounting cavity (67), a second spring (68), a positioning frame (69), a connecting plate (610), a positioning post (618), and a circular groove (619). The assembly device also includes an operating mechanism consisting of a linkage column (611), a support frame (612), a guide groove (613), a spring (614), and an anti-slip pressing block (615); The surface of the joint connector (3) is provided with a slot (61), the insert plate (66) is inserted into the inner wall of the slot (61), the insert plate (66) is fixedly connected to the side surface of the anvil body (4), the joint connector (3) is provided with a storage cavity (62) on the inner wall of the slot (61), the joint connector (3) is fixedly connected to the inner wall of the storage cavity (62), the joint connector (3) is slidably connected to the inner wall of the storage cavity (62), and the spring (63) is fixedly connected to the side surface of the locking frame (64). The side surface of the insert plate (66) is provided with an installation cavity (67). The insert plate (66) is fixedly connected to the inner wall of the installation cavity (67). A positioning frame (69) is fixedly connected to one side of the spring (68). A fixing groove (65) is provided on the surface of the locking frame (64). The positioning frame (69) penetrates the side surface of the insert plate (66). The positioning frame (69) is inserted into the inner wall of the fixing groove (65). A connecting plate (610) is fixedly connected to the side surface of the positioning frame (69). The connecting plate (610) is fixedly connected to the surface of the linkage column (611), the insert plate (66) is slidably connected to the inner wall of the mounting cavity (67) with the support frame (612), the side surface of the support frame (612) is provided with a guide groove (613) adapted to the linkage column (611), the inner wall of the support frame (612) is fixedly connected to the spring three (614), and the spring three (614) is fixedly connected to the inner wall of the mounting cavity (67); The side surface of the joint connector (3) is fixedly connected to a positioning post (618), and the side surface of the anvil body (4) is provided with a circular groove (619), and the positioning post (618) is inserted into the inner wall of the circular groove (619).

2. The electrically operated laparoscopic stapler with convenient anvil disassembly according to claim 1, characterized in that: The positioning frame (69) is slidably connected to the inner wall of the mounting cavity (67), the connecting plate (610) is slidably connected to the inner wall of the mounting cavity (67), the linkage column (611) is located inside the mounting cavity (67), the linkage column (611) is slidably connected to the inner wall of the guide groove (613), and the bearing frame (612) is T-shaped.

3. The electrically operated laparoscopic stapler with convenient anvil disassembly according to claim 1, characterized in that: The upper surface of the support frame (612) is fixedly connected with an anti-slip pressing block (615).

4. The electrically operated laparoscopic stapler with convenient anvil disassembly according to claim 1, characterized in that: The insert plate (66) has compression grooves (616) on both the left and right sides that are adapted to the locking frame (64), and guide grooves (617) are provided on both the left and right sides of the insert plate (66).

5. The electrically operated laparoscopic stapler with convenient anvil disassembly according to claim 1, characterized in that: The joint connector (3) is provided with an assisting device (7) on the inner wall of the slot (61). The assisting device (7) includes an assembly frame (71), which is slidably connected to the inner wall of the slot (61). The joint connector (3) is fixedly connected to a cover plate (72) on the inner wall of the slot (61). A cover plate (73) is fixedly connected to the side surface of the assembly frame (71). The cover plate (73) is movably abutting against the inner side of the cover plate (72). A locking pin (76) is slidably connected to the inner wall of the assembly frame (71). A compression spring (77) is fixedly connected to the upper surface of the locking pin (76). The compression spring (77) is fixedly connected to the inner wall of the assembly frame (71). The joint connector (3) is provided with a slot (78) that matches the locking pin (76) on the inner wall of the slot (61). The side surface of the assembly frame (71) is provided with a groove (79), and a permanent magnet (710) is fixedly connected to the inner wall of the groove (79) of the assembly frame (71). The side surface of the insert plate (66) is provided with a square groove (711), and a permanent magnet (712) is fixedly connected to the inner wall of the square groove (711) of the insert plate (66).

6. The electrically operated laparoscopic stapler with convenient anvil disassembly according to claim 5, characterized in that: The inner wall of the first cover plate (72) is provided with a T-shaped groove (74), and the arc surface of the second cover plate (73) is fixedly connected with a T-shaped slider (75), which is slidably connected to the inner wall of the T-shaped groove (74).

7. The electrically operated laparoscopic stapler with convenient anvil disassembly according to claim 5, characterized in that: The insertion end of the latch (76) is hemispherical, and there are two latches (76). The two latches (76) are mirrored with the vertical axis of the assembly frame (71) as the mirror axis.

8. The electrically operated laparoscopic stapler with convenient anvil disassembly according to claim 5, characterized in that: The first permanent magnet (710) and the second permanent magnet (712) are magnetically connected.

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