Electric anastomat for endoscopy

Abstract

The present application relates to the technical field of medical devices, in particular to a kind of electric anastomat for endoscope.The electric anastomat for endoscope includes main body, pipe body, nail bin seat, adjusting assembly and fixed assembly, the end of main body is equipped with battery pack, the bottom of main body is equipped with handle, the other end of main body is equipped with pipe body, the outside of pipe body is equipped with extension pipe with sliding sleeve.The electric anastomat for endoscope provided in the present application is designed by adjusting assembly, so that operator can only use the index finger of holding hand to operate rotating ring in the state of holding handle with single hand, and the continuous adjustment of nail bin seat angle can be realized.The design does not need to free up auxiliary hand to operate adjusting mechanism during operation, and the other hand can continue to assist in operating endoscope lens or other surgical instruments, which avoids the discontinuity of operation caused by angle adjustment, reduces the risk of instrument pollution caused by frequent replacement of surgical instruments, and greatly improves the efficiency and safety of operation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an electric stapler for laparoscopy. Background Technology

[0002] With the rapid development of minimally invasive surgical techniques, laparoscopic surgery has been widely applied in various clinical fields such as general surgery, thoracic surgery, and urology due to its significant advantages such as minimal trauma, rapid postoperative recovery, and short hospital stay. In laparoscopic surgery, the stapler is the core instrument for achieving tissue transection and anastomosis, and its performance directly affects the quality of the surgery and the patient's prognosis. Compared to traditional manual staplers, electric staplers, driven by a motor, provide a stable and uniform firing force, effectively reducing surgeon fatigue, improving the quality of the anastomosis, and reducing postoperative complications. Therefore, they are gradually becoming the preferred choice in clinical practice.

[0003] Current laparoscopic electric staplers typically consist of a main body, power unit, tube, staple cartridge, anvil, and disposable staple cartridge. To accommodate the surgical needs of different anatomical locations within narrow cavities such as the abdominal and thoracic cavities, the staple cartridge is usually designed with an adjustable angle, allowing surgeons to adjust the direction of the anastomosis without altering the overall position of the instrument.

[0004] However, in existing technologies, the staple cartridge angle adjustment mechanism is mostly located at the connection between the front end of the main unit and the tube, or a separate adjustment knob is set on the top of the main unit. During surgery, surgeons typically use one hand to hold the stapler handle for tissue clamping and firing, while the other hand is needed to assist in operating the laparoscopic lens or other surgical instruments to expose the surgical field. When it is necessary to adjust the staple cartridge angle, the auxiliary hand must be freed up to operate the adjustment mechanism, which not only interrupts the continuity of the surgical procedure and prolongs the operation time, but also increases the risk of surgical instrument contamination. Secondly, the angle fixing mechanism of existing electric staplers mostly adopts a friction damping structure. The friction damping structure relies on the friction between components to maintain the angle, and its fixing force is limited. When the stapler clamps thick tissue or fires, the reaction force generated by the tissue will overcome the friction, causing a slight deviation in the staple cartridge angle. The deviation in the staple cartridge angle will directly lead to poor staple formation, deviation of the cutting line from the preset position, and in severe cases, serious complications such as anastomotic leakage and bleeding.

[0005] Therefore, it is necessary to provide a new electric stapler for laparoscopy to solve the above-mentioned technical problems. Summary of the Invention

[0006] To solve the above-mentioned technical problems, the present invention provides an electric stapler for laparoscopy.

[0007] The electric stapler for endoscopy provided by this invention includes: a main body, a tube, a staple cartridge holder, an adjustment component, and a fixing component. A battery pack is installed at one end of the main body, a handle is installed at the bottom of the main body, and a tube is installed at the other end of the main body. An extension tube is slidably sleeved on the outside of the tube. A staple cartridge holder is installed at the end of the extension tube, and a staple cartridge is installed inside the staple cartridge holder. A staple abutment is installed at the top of the end of the staple cartridge holder near the extension tube. An adjustment component is installed between the staple cartridge holder and the main body. The adjustment component is used to adjust and fix the angle of the staple cartridge holder. A fixing component is installed between the staple cartridge holder and the staple cartridge. The fixing component is used to fix the staple cartridge inside the staple cartridge holder.

[0008] Preferably, the adjustment component includes: a circular gear, an arc gear, a transmission rod, and a rotating ring. The main body has an internal mounting groove. An arc gear is rotatably connected to the inner wall of the mounting groove. A circular gear meshes with the arc gear on the side of the arc gear near the battery pack. A transmission rod is rotatably connected inside the mounting groove. The top end of the transmission rod is fixedly connected to the axis of the circular gear. The bottom end of the transmission rod extends into the inside of the handle and is fixedly connected to the rotating ring. One side of the rotating ring extends out of the handle.

[0009] Preferably, an installation cylinder is fixedly connected to the side of the installation slot near the battery pack. A spring is fixedly connected to the inner wall of the installation cylinder. A locking block is fixedly connected to the other end of the spring. The end of the locking block near the spring is placed inside the installation cylinder and is slidably connected to its inner wall. The end of the locking block away from the spring engages with the tooth groove of the circular gear.

[0010] Preferably, the arc gear is symmetrically rotatably connected to the side away from the circular gear, and the other end of the connecting rod is fixedly connected to a limit plate. The outer wall of the end of the connecting rod near the limit plate is slidably fitted with a connecting tube. The limit plate is placed inside the corresponding connecting tube and contacts the inner wall of its end face. The other end of the connecting tube is rotatably connected to the staple cartridge seat.

[0011] Preferably, a firing button is installed on the side wall of the grip, and a control button is installed on the side wall of the main body.

[0012] Preferably, a threaded head is fixedly connected to one end of the extension tube near the main body, and a threaded cylinder is fitted on the outer wall of the tube body, with the threaded cylinder and the threaded head being threadedly connected.

[0013] Preferably, the fixing component includes: an arc-shaped push plate, an mounting tube, a second spring, and a second locking block. The outer wall of the nail cartridge seat has an arc-shaped groove, and the arc-shaped push plate is slidably connected inside the arc-shaped groove. The mounting tube is symmetrically fixedly connected to the inner wall of the arc-shaped push plate. The inner wall of each mounting tube is fixedly connected to a second spring, and the other end of each second spring is fixedly connected to a second locking block.

[0014] Preferably, the side wall of the nail cartridge is symmetrically provided with slots, and the ends of the second locking blocks all pass through the interior of the nail cartridge seat and engage with the corresponding slots.

[0015] Preferably, the staple cartridge seat has symmetrically opened mounting holes inside, and guide rods are symmetrically fixedly connected to the side walls of the mounting tubes. The other end of each guide rod extends into the interior of the mounting hole and is slidably connected to its inner wall. A spring three is sleeved on the outside of each guide rod. One end of each spring three is fixedly connected to the side wall of the corresponding mounting tube, and the other end of each spring three is fixedly connected to the inner wall of the staple cartridge seat.

[0016] Preferably, the sidewalls of the grip are provided with anti-slip texture.

[0017] Compared with related technologies, the electric stapler for laparoscopy provided by the present invention has the following advantages: The adjustable mechanism allows the operator to rotate the ring with just their index finger while holding the handle with one hand. This rotates the circular gear, which in turn meshes with the arc-shaped gear, causing the arc-shaped gear to oscillate. Through the differential motion of two symmetrically positioned connecting rods, the angle of the staple cartridge seat can be continuously adjusted. This design eliminates the need for the surgeon to use their auxiliary hand to operate the adjustment mechanism during surgery. The other hand can continue to assist in operating the laparoscopic lens or other surgical instruments, avoiding interruptions to the surgical procedure due to angle adjustments. This effectively shortens surgical time and reduces the risk of instrument contamination caused by frequent instrument changes, significantly improving surgical efficiency and safety.

[0018] During the rotation and angle adjustment of the circular gear, the first locking block automatically springs into the tooth groove of the circular gear under the elastic force of the first spring, forming a gear-locking block rigid self-locking structure. This structure can completely resist the reaction force generated during tissue clamping and firing operations, thus completely eliminating the problem of slight displacement of the staple cartridge seat angle caused by the reaction force overcoming friction. This effectively avoids serious complications such as poor anastomosis staple formation, deviation of the cutting line from the preset position, anastomotic leakage and bleeding caused by angle displacement, significantly improving the quality of surgery.

[0019] Thanks to the design of the fixing components, when installing the staple cartridge, simply push the cartridge axially into the mounting cavity of the staple cartridge seat, and the second locking block will automatically engage with the slot under the action of the second spring to complete the locking. For disassembly, simply press the arc-shaped push plate inward, which will simultaneously disengage the second locking blocks on both sides from the slot, achieving one-click unlocking. The entire installation and disassembly process requires no auxiliary tools, is quick and convenient, and effectively shortens preoperative preparation and postoperative cleaning time.

[0020] By setting a threaded head at the end of the extension tube and a threaded cylinder on the outer wall of the tube body, the extension tube can be extended and rigidly fixed. After use, the threaded cylinder can be loosened and the extension tube can be slid in the opposite direction, reducing space occupation and making it easy to store. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the structure of the electric anastomosis device for laparoscopy provided by the present invention; Figure 2 for Figure 1 The diagram shows the structure of the tube. Figure 3 for Figure 2 The diagram shows the structure at point A. Figure 4 for Figure 2 The diagram shows the structural schematic of the main body; Figure 5 for Figure 4 The diagram shows the structure at point B. Figure 6 for Figure 4 The diagram shows the structure of the anvil. Figure 7 for Figure 6 The diagram shows the structure of the staple cartridge holder; Figure 8 for Figure 7 The diagram shows the structure at point C.

[0022] The following components are labeled in the diagram: 1. Main body; 2. Battery pack; 3. Handle; 4. Tube; 5. Extension tube; 6. Spike cartridge seat; 7. Spike box; 8. Circular gear; 9. Arc gear; 10. Transmission rod; 11. Rotating ring; 12. Mounting cylinder; 13. Spring 1; 14. Locking block 1; 15. Connecting rod; 16. Limiting plate; 17. Connecting tube; 18. Firing button; 19. Control button; 20. Threaded head; 21. Threaded cylinder; 22. Arc-shaped push plate; 23. Mounting tube; 24. Spring 2; 25. Locking block 2; 26. Slot; 27. Guide rod; 28. Spring 3; 29. ​​Spike seat. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0025] Example 1 Please see Figures 1 to 8An electric stapler for endoscopy includes: a main body 1, a tube 4, a staple cartridge seat 6, an adjustment component, and a fixing component. A battery pack 2 is installed at one end of the main body 1, a handle 3 is installed at the bottom of the main body 1, and a tube 4 is installed at the other end of the main body 1. An extension tube 5 is slidably sleeved on the outside of the tube 4. A staple cartridge seat 6 is installed at the end of the extension tube 5. The staple cartridge seat 6 is rotatably connected to the front end of the extension tube 5 by a pin. A staple cartridge 7 is installed inside the staple cartridge seat 6. A staple abutment 29 is installed on the top of the end of the staple cartridge seat 6 near the extension tube 5. An adjustment component is installed between the staple cartridge seat 6 and the main body 1 to adjust and fix the angle of the staple cartridge seat 6. A fixing component is installed between the staple cartridge seat 6 and the staple cartridge 7 to fix the staple cartridge 7 inside the staple cartridge seat 6.

[0026] The pin holder 29 is hinged to the top of one end of the pin cartridge seat 6 by a pin. The tail of the pin holder 29 is connected to an opening and closing drive rod. The opening and closing drive rod is telescopic and passes through the interior of the extension tube 5 and the tube body 4 in sequence, and is connected to the opening and closing motor inside the main body 1. The control button 19 is electrically connected to the electronic control unit and is used to control the forward and reverse rotation of the opening and closing motor to realize the opening and closing of the pin holder 29.

[0027] The adjustment assembly includes: a circular gear 8, an arc gear 9, a transmission rod 10, and a rotating ring 11. The main body 1 has an internal mounting groove. The inner wall of the mounting groove is rotatably connected to the arc gear 9. The arc gear 9 is rotatably connected to the inner wall of the mounting groove via a pin. The arc gear 9 meshes with the circular gear 8 on the side near the battery pack 2. The transmission rod 10 is rotatably connected inside the mounting groove. The top end of the transmission rod 10 is fixedly connected to the axis of the circular gear 8. The bottom end of the transmission rod 10 extends into the inside of the handle 3 and is fixedly connected to the rotating ring 11. One side of the rotating ring 11 extends out of the handle 3.

[0028] An installation cylinder 12 is fixedly connected to the inside of the mounting slot near the battery pack 2. A spring 13 is fixedly connected to the inner wall of the installation cylinder 12. A locking block 14 is fixedly connected to the other end of the spring 13. The end of the locking block 14 near the spring 13 is placed inside the installation cylinder 12 and is slidably connected to its inner wall. The end of the locking block 14 away from the spring 13 is engaged with the tooth groove of the circular gear 8.

[0029] A connecting rod 15 is symmetrically rotatably connected to the side of the arc gear 9 away from the circular gear 8. The two connecting rods 15 are symmetrically rotatably connected to the end face of the arc gear 9 away from the circular gear 8 by a pin shaft. The other end of each connecting rod 15 is fixedly connected to a limiting plate 16. A connecting tube 17 is slidably sleeved on the outer wall of the end of each connecting rod 15 near the limiting plate 16. The limiting plate 16 is placed inside the corresponding connecting tube 17 and contacts the inner wall of its end face. The other end of each connecting tube 17 is rotatably connected to the staple cartridge seat 6.

[0030] A firing button 18 is installed on the side wall of the grip 3, and a control button 19 is installed on the side wall of the main body 1.

[0031] A threaded head 20 is fixedly connected to one end of the extension tube 5 near the main body 1. A threaded cylinder 21 is fitted on the outer wall of the tube body 4, and the threaded cylinder 21 is threadedly connected to the threaded head 20. An annular flange is provided on the outer wall of the front end of the tube body 4. The outer diameter of the annular flange is larger than the inner diameter of the threaded cylinder 21, which is used to restrict the axial movement of the threaded cylinder 21 and prevent it from falling off the front end of the tube body 4. A straight groove is provided at equal intervals around the axial direction of the threaded head 20 near the threaded cylinder 21, and the end face of the threaded head 20 is chamfered. The inner end face of the threaded cylinder 21 is provided with an inclined surface that matches the chamfer of the end face of the threaded head 20. When the threaded cylinder 21 is tightened, its inner inclined surface presses against the chamfered surface of the end face of the threaded head 20, causing the end of the threaded head 20 near the chamfer to contract radially. The axial movement of the threaded cylinder 21 is converted into the radial contraction of the end of the threaded head 20, which fixes the tube body 4, similar to the clamping and fixing mechanism of a telescopic rod in daily life.

[0032] The tube body 4 is equipped with a fixed firing rod inside, and the extension tube 5 is equipped with a sliding firing rod inside. The rear end of the sliding firing rod is slidably connected to the front end of the fixed firing rod through a spline structure, so that the sliding firing rod can extend and retract synchronously with the extension tube 5 and maintain torque / thrust transmission. The front end of the sliding firing rod extends out of the front end face of the extension tube 5. When the nail magazine 7 is installed in place, the front end of the sliding firing rod is aligned with the rear end face of the nail pusher plate inside the nail magazine 7. When firing, the sliding firing rod pushes the nail pusher plate and the cutting blade forward synchronously.

[0033] Example 2 Please see Figures 6 to 8 The fixing components include: an arc-shaped push plate 22, an installation tube 23, a second spring 24, and a second locking block 25. The outer wall of the nail cartridge seat 6 is provided with an arc-shaped groove, and the arc-shaped push plate 22 is slidably connected inside the arc-shaped groove. The installation tube 23 is symmetrically fixedly connected to the inner wall of the arc-shaped push plate 22. The second spring 24 is fixedly connected to the inner wall of each installation tube 23, and the other end of each second spring 24 is fixedly connected to the second locking block 25.

[0034] The side wall of the nail cartridge 7 is symmetrically provided with slots 26. The ends of the second locking blocks 25 pass through the interior of the nail cartridge seat 6 and engage with the corresponding slots 26. The inner wall of the nail cartridge seat 6 is provided with radial through holes corresponding to the positions of the two second locking blocks 25. The ends of the second locking blocks 25 pass through the radial through holes and extend into the mounting cavity of the nail cartridge 7, and engage with the slots 26 on the side wall of the nail cartridge 7.

[0035] The staple cartridge seat 6 has symmetrically arranged mounting holes inside. The side walls of the mounting tube 23 are symmetrically fixedly connected with guide rods 27. The other end of each guide rod 27 extends into the interior of the corresponding mounting hole and is slidably connected to its inner wall. Each guide rod 27 is fitted with a spring 28. One end of each spring 28 is fixedly connected to the side wall of the corresponding mounting tube 23, and the other end of each spring 28 is fixedly connected to the inner wall of the staple cartridge seat 6.

[0036] The sidewalls of grip 3 are textured with anti-slip material.

[0037] The specific structures of the electronic control unit, DC motor, firing transmission mechanism, battery pack 2 and anvil 29 inside the main body 1, which are not covered in this invention, all adopt the conventional endoscopic electric stapler structure in the art, and will not be described in detail here.

[0038] The working principle of the electric stapler for endoscopy provided by this invention is as follows: In the initial state, the extension tube 5 is completely fitted onto the outer wall of the tube body 4, and the threaded cylinder 21 is located at the end of the tube body 4 near the main body 1 and is in an unlocked state; at this time, the connecting tube 17 is mostly fitted onto the outer wall of the connecting rod 15, and the limiting plate 16 is located inside the connecting tube 17 near the nail cartridge seat 6.

[0039] The operator holds the handle 3 with one hand and pinches the outer wall of the extension tube 5 with the other, pulling the extension tube 5 outward along the axis of the tube body 4 until it reaches the required length for the surgery. During this pulling process, the extension tube 5 drives the staple cartridge seat 6 at its end to move away from the main body 1 in a synchronous direction; the staple cartridge seat 6 drives the two connecting tubes 17 rotatably connected to it to slide outward along the axis of the connecting rod 15 in a synchronous direction, and the limiting plate 16 moves towards the main body 1 inside the connecting tube 17 until it contacts the inner wall of the end face of the connecting tube 17.

[0040] After the extension tube 5 is pulled to the target length, push the threaded cylinder 21 along the axial direction of the tube body 4 towards the extension tube 5 until the internal thread of the threaded cylinder 21 aligns with the external thread of the threaded head 20 at the end of the extension tube 5. Rotate the threaded cylinder 21, and the threaded engagement will completely lock the threaded cylinder 21 and the threaded head 20 together, thereby rigidly fixing the extension tube 5 and the tube body 4 as one unit, completing the adjustment and fixation of the instrument length.

[0041] When the angle of the staple cartridge seat 6 needs to be adjusted to accommodate different anatomical sites, the operator does not need to release their grip on the handle 3. Instead, they can directly use their index finger to flick the rotating ring 11 extending from the side wall of the handle 3, causing the rotating ring 11 to rotate around its axis. The rotating ring 11 drives the transmission rod 10, which is fixedly connected to it, to rotate synchronously. The transmission rod 10 transmits the rotational motion from inside the handle 3 to the mounting slot of the main body 1, thereby driving the circular gear 8, which is fixedly connected to the top of the transmission rod 10, to rotate synchronously. The circular gear 8 meshes with the arc gear 9, and the rotation of the circular gear 8 causes the arc gear 9 to oscillate in an arc around its own axis of rotation within the mounting slot.

[0042] When the arc gear 9 swings, it causes the two connecting rods 15, which are symmetrically connected at their ends, to generate differential motion: when the arc gear 9 swings to one side, one connecting rod 15 pushes towards the staple cartridge seat 6, while the other connecting rod 15 pulls away from the staple cartridge seat 6. The differential motion of the two connecting rods 15 is transmitted to the corresponding connecting tube 17 through the limiting plate 16, thereby causing the staple cartridge seat 6 to swing left and right around the rotating connection point between it and the end of the extension tube 5, achieving continuous adjustment of the angle of the staple cartridge seat 6. While the circular gear 8 rotates, the side wall of its tooth groove continuously presses the inclined surface of the end of the locking block 14, causing the locking block 14 to slide into the mounting cylinder 12 and compress the spring 13 to store elastic potential energy. When the staple cartridge seat 6 is adjusted to the target angle, the operator releases the rotating ring 11. At this time, the spring 13 releases its elastic potential energy, pushing the locking block 14 towards the circular gear 8, so that the end of the locking block 14 is engaged in the tooth groove corresponding to the current position of the circular gear 8. The engagement of the locking block 14 with the tooth groove of the circular gear 8 forms a rigid self-locking structure, which can resist the reaction force generated during tissue clamping and firing, completely preventing the staple cartridge seat 6 from shifting at an angle, and achieving reliable fixation of the angle after adjustment.

[0043] Before the nail cartridge 7 is installed, the spring 3 28 is in a naturally extended state, pushing the installation tube 23 to drive the arc-shaped push plate 22 to be located at the end of the arc-shaped groove near the extension tube 5; under the elastic force of the spring 24, the end of the locking block 25 extends out of the inner wall of the nail cartridge seat 6 and enters the installation cavity of the nail cartridge 7.

[0044] The operator removes the sterile disposable staple cartridge 7, aligns the rear end of the staple cartridge 7 with the mounting cavity at the front end of the staple cartridge seat 6, and pushes the staple cartridge 7 axially inward. When the end of the staple cartridge 7 contacts the inclined end of the locking block 25, the operator continues to push the staple cartridge 7. The side wall of the staple cartridge 7 exerts a radial compressive force on the locking block 25, causing the locking block 25 to slide into the mounting tube 23 and compressing the spring 24 to store elastic potential energy. The operator continues to push the staple cartridge 7 inward until it is fully inserted into the mounting cavity of the staple cartridge seat 6. At this point, the two symmetrically opened slots 26 on the side wall of the staple cartridge 7 are precisely aligned with the positions of the two locking blocks 25. When the slots 26 are aligned with the locking blocks 25, the spring 24 releases its elastic potential energy, pushing the locking blocks 25 outward, so that the ends of the locking blocks 25 engage with the corresponding slots 26, completing the automatic locking and fixing of the staple cartridge 7. The symmetrical snap-fit ​​structure on both sides ensures that the fixing force on the nail magazine 7 is evenly distributed, which can effectively resist the axial impact force generated during firing and prevent the nail magazine 7 from loosening or falling off.

[0045] After preparation, the operator holds the stapler and inserts the staple cartridge seat 6 and the anvil seat 29 into the surgical cavity, aligning them with the tissue to be anastomosed. Pressing the control button 19 on the side wall of the main unit 1 causes the anvil seat 29 to close towards the staple cartridge 7, firmly clamping the tissue to be anastomosed between the anvil seat 29 and the staple cartridge 7. After confirming the correct tissue clamping position and appropriate thickness, pressing the firing button 18 on the side wall of the handle 3 activates the DC motor in the electronic control unit inside the main unit 1. The motor drives the firing lever forward along the tube 4 via an internal transmission mechanism, which in turn pushes the pusher and cutter inside the staple cartridge 7 forward synchronously. The cutter first forms a clean cutting line in the middle of the tissue, severing it; simultaneously, the pusher pushes out multiple rows of pre-made staples from the staple cartridge 7. After passing through two layers of tissue, the staples impact the anvil seat 29, bending into a standard "B" shape, achieving a tight anastomosis of the tissue. After firing, the motor automatically reverses, driving the firing lever, pusher, and cutter to return to their initial positions; releasing control button 19 causes the anvil 29 to open, releasing the matched tissue.

[0046] When disassembling the nail box 7, push the arc-shaped push plate 22 with your finger to move it away from the extension tube 5. The arc-shaped push plate 22 drives the two mounting tubes 23 to move synchronously to the other end of the arc-shaped groove, thereby causing the locking block 25 to exit from the locking slot 26 of the nail box 7. During this process, the guide rod 27 slides along the mounting hole to guide, and the spring 3 28 is compressed to store elastic potential energy. Keeping the arc-shaped push plate 22 pressed down, pull out the used nail box 7, release the arc-shaped push plate 22, and the spring 3 28 releases its elastic force, causing the fixing component to return to its initial state.

[0047] The extension tube 5 retracts, and the threaded cylinder 21 rotates in the opposite direction to disengage the threaded cylinder 21 from the threaded head 20. Then, the extension tube 5 is pushed inward along the axial direction of the tube body 4 until the extension tube 5 is completely fitted onto the outer wall of the tube body 4, thus restoring the instrument length for easy storage.

[0048] Finally, disassemble battery pack 2 as needed and clean and disinfect the equipment.

[0049] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0050] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. An electric stapler for laparoscopy, characterized in that, include: The main body (1) has a battery pack (2) installed at the end of the main body (1) and a handle (3) installed at the bottom of the main body (1). The other end of the main body (1) is equipped with a tube body (4), and an extension tube (5) is slidably sleeved on the outside of the tube body (4). The staple cartridge seat (6) is installed at the end of the extension tube (5). The staple cartridge (7) is installed inside the staple cartridge seat (6). The top of the staple cartridge seat (6) near the extension tube (5) is fitted with a staple seat (29). An adjustment assembly is installed between the staple cartridge holder (6) and the main body (1). The adjustment assembly is used to adjust the angle of the staple cartridge holder (6) and fix it. A fixing component is installed between the staple cartridge holder (6) and the staple cartridge (7) to fix the staple cartridge (7) inside the staple cartridge holder (6).

2. The electric stapler for endoscopy according to claim 1, characterized in that, The adjustment components include: a circular gear (8), an arc gear (9), a transmission rod (10), and a rotating ring (11). The main body (1) has an installation groove inside. The inner wall of the installation groove is rotatably connected to the arc gear (9). The arc gear (9) meshes with the circular gear (8) on the side near the battery pack (2). The transmission rod (10) is rotatably connected inside the installation groove. The top end of the transmission rod (10) is fixedly connected to the axis of the circular gear (8). The bottom end of the transmission rod (10) extends into the inside of the handle (3) and is fixedly connected to the rotating ring (11). One side of the rotating ring (11) extends out of the outside of the handle (3).

3. The electric stapler for endoscopy according to claim 2, characterized in that, An installation cylinder (12) is fixedly connected to the inside of the mounting slot near the battery pack (2). A spring (13) is fixedly connected to the inner wall of the installation cylinder (12). A locking block (14) is fixedly connected to the other end of the spring (13). The end of the locking block (14) near the spring (13) is placed inside the installation cylinder (12) and is slidably connected to its inner wall. The end of the locking block (14) away from the spring (13) is engaged with the tooth groove of the circular gear (8).

4. The electric stapler for endoscopy according to claim 3, characterized in that, The arc gear (9) is symmetrically connected to the connecting rod (15) on the side away from the circular gear (8). The other end of the connecting rod (15) is fixedly connected to the limiting plate (16). The outer wall of the end of the connecting rod (15) close to the limiting plate (16) is slidably fitted with a connecting tube (17). The limiting plate (16) is placed inside the corresponding connecting tube (17) and contacts the inner wall of its end face. The other end of the connecting tube (17) is rotatably connected to the nail chamber seat (6).

5. The electric stapler for endoscopy according to claim 1, characterized in that, A firing button (18) is installed on the side wall of the grip (3), and a control button (19) is installed on the side wall of the main body (1).

6. The electric stapler for endoscopy according to claim 1, characterized in that, The extension tube (5) is fixedly connected to a threaded head (20) at one end near the main body (1), and a threaded cylinder (21) is fitted on the outer wall of the tube body (4), and the threaded cylinder (21) is threadedly connected to the threaded head (20).

7. The electric stapler for endoscopy according to claim 1, characterized in that, The fixing components include: an arc-shaped push plate (22), an installation tube (23), a second spring (24), and a second locking block (25). The outer wall of the nail cartridge seat (6) is provided with an arc-shaped groove, and the arc-shaped push plate (22) is slidably connected inside the arc-shaped groove. The installation tube (23) is symmetrically fixedly connected to the inner wall of the arc-shaped push plate (22). The second spring (24) is fixedly connected to the inner wall of the installation tube (23). The second locking block (25) is fixedly connected to the other end of the second spring (24).

8. The electric stapler for laparoscopy according to claim 7, characterized in that, The side wall of the nail box (7) is symmetrically provided with slots (26), and the ends of the second locking block (25) pass through the interior of the nail chamber seat (6) and engage with the corresponding slots (26).

9. The electric stapler for endoscopy according to claim 8, characterized in that, The staple cartridge seat (6) has symmetrically opened mounting holes inside. The side wall of the mounting tube (23) is symmetrically fixedly connected with guide rods (27). The other end of each guide rod (27) extends into the inside of the mounting hole and is slidably connected to its inner wall. Each guide rod (27) is fitted with a spring three (28). One end of each spring three (28) is fixedly connected to the side wall of the corresponding mounting tube (23), and the other end of each spring three (28) is fixedly connected to the inner wall of the staple cartridge seat (6).

10. The electric stapler for endoscopy according to claim 1, characterized in that, The sidewall of the grip (3) is provided with anti-slip texture.

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