Stable propulsion electric endoscope anastomat

Abstract

The present application relates to the technical field of anastomat, in particular to a stable electric endoscope anastomat, which comprises an anastomat gun body, a straight pipe fixed at one end of the anastomat gun body, and a plug-in pipe plugged at one end of the straight pipe. The limit slide and cutting knife are moved by the push rod, the liquid injection assembly is triggered to spray liquid in order, the healing-promoting liquid is uniformly sprayed on the fresh cutting wound surface, the sprayed liquid can quickly form a protective film with strong adhesion on the wound surface, effectively isolating the stimulation of abdominal effusion and instrument friction on the wound surface, reducing the risk of postoperative tissue adhesion and avoiding delayed healing of the wound surface due to prolonged exposure time, providing immediate protection for early healing of the anastomotic stoma, not only making up for the shortcomings of the existing equipment that can only cut and anastomose but cannot simultaneously ensure the repair conditions of the wound surface, but also shortening the healing period and reducing the risk of complications such as anastomotic stoma bleeding and dehiscence, meeting the clinical demand for efficient and safe healing.

Description

Technical Field

[0001] This invention relates to the field of anastomosis device technology, specifically to a stapling device that provides stable propulsion via an electric laparoscopic anastomosis device. Background Technology

[0002] Anastomosing devices are medical devices used to replace manual suturing. They are mainly used for closing stumps or incisions in laparoscopic gastrointestinal reconstruction and organ resection surgeries. Existing electric laparoscopic anastomosing devices generally consist of an anastomosing gun body, a straight tube, an insertion tube, a staple cartridge, an anvil, a cutting blade, and a stable propulsion and guiding mechanism. It mainly uses a motor-driven transmission system to drive the cutting blade to move directionally along a preset guide rail in the staple cartridge to achieve cutting and anastomosis. During the propulsion process, the sliding cooperation between the guide rail and the cutting blade, as well as the constraint of the limiting structure on the transmission components, ensure that the cutting blade moves forward at a constant speed, simultaneously completing the tissue cutting and titanium staple firing actions. The titanium staple is ejected from the staple cartridge under the propulsion force of the cutting blade, and bends and shapes against the forming groove of the anvil, achieving mechanical anastomosis and fixation of the tissue. The overall stability of the propulsion process is ensured through the synergy of mechanical guidance and power drive.

[0003] Existing motorized laparoscopic anastomotic devices can only achieve tissue connection through mechanical fixation with titanium screws, and cannot provide immediate intervention for the fresh wound after anastomosis. After anastomosis, the wound formed by cutting and screwing is directly exposed, without a physical protective barrier to isolate external stimuli such as intra-abdominal fluid and tissue friction, nor any bioactive components to assist in repair. It relies entirely on the patient's own tissue repair capabilities, resulting in a slow healing process. Especially in anastomosis scenarios involving fragile tissues or poor blood supply, such as the gastrointestinal tract, pancreas, and biliary tract, the titanium screws only have mechanical contact with the tissue, resulting in limited adhesion and problems such as ischemia and poor adhesion around the screws. This not only prolongs the healing period but may also increase the risk of complications such as anastomotic bleeding and dehiscence, making it difficult to meet the clinical demand for efficient and safe healing. Summary of the Invention

[0004] The purpose of this invention is to provide a stably propelled electric laparoscopic anastomosis device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a stapling device with stable propulsion, comprising a stapling device body, a straight tube fixed to one end of the stapling device body, and an insertion tube inserted into one end of the straight tube. The end of the insertion tube away from the straight tube is provided with a staple cartridge seat for mounting a staple cartridge via a movable hinge mechanism. A staple stop seat for assisting in the closure of titanium staples is rotatably mounted on one side of the staple cartridge seat. A cutting blade is provided in the middle of one side of the staple cartridge seat, and a follower component is provided at the top of the cutting blade. An embedded opening is provided in the middle of the staple cartridge seat. The device has a cutting groove. The anvil is located on both sides of the cutting groove and has several titanium nail forming grooves on its outer side. The nail cartridge seat has an installation cavity near the cutting groove. An injection assembly is provided between the installation cavity and the cutting groove. The injection assembly includes several limiting grooves and several suction cylinders. Several limiting grooves are equally spaced and pass through the interior of the nail cartridge seat. The opening area of ​​the limiting groove is between the cutting groove and the installation cavity. Several suction cylinders are fixedly installed on the bottom wall of the installation cavity at equal intervals along the direction corresponding to the limiting groove.

[0006] Furthermore, each of the limiting slots is provided with an inclined rotating block inside, and a limiting rod is fixedly installed through the rotating block near the middle position. Both ends of the limiting rod are embedded and rotatably installed on the inner wall of the mounting cavity. A rotating shaft is rotatably installed at one end of the rotating block that extends into the bottom of the cutting groove.

[0007] Furthermore, an abutment wheel is fixedly installed through the outside of the rotating shaft, and a guide groove is opened through the end of the rotating block away from the abutment wheel. A connecting shaft is slidably engaged inside the guide groove, and a connecting block is rotatably installed through the outside of the connecting shaft.

[0008] Furthermore, a limiting frame is fixedly installed at the top center of the suction cylinder, and a limiting rod is vertically and slidably installed inside the limiting frame. The top end of the limiting rod is fixedly installed to the bottom end of the connecting block, and a piston block is fixedly installed at the bottom end of the limiting rod. The piston block is slidably and sealingly installed inside the suction cylinder.

[0009] Furthermore, a one-way liquid inlet valve pipe is fixedly installed inside the suction cylinder below the piston block, and a liquid storage chamber is opened inside one side of the nail chamber seat. The input end of the one-way liquid inlet valve pipe is fixedly installed inside the bottom side of the liquid storage chamber.

[0010] Furthermore, two one-way drain valves are symmetrically and fixedly installed inside the suction cylinder near the one-way inlet valve. Several discharge heads are embedded and fixed at equal intervals on the top outer side of the nail chamber seat on both sides of the cutting groove. The input end of each discharge head is connected and fixed to the output end of a one-way drain valve on the corresponding side.

[0011] Furthermore, a return spring is sleeved on the outside of the limiting rod, and the two ends of the return spring are respectively fixedly installed on the outside of the bottom end of the limiting frame and the outside of the top end of the piston block.

[0012] Furthermore, the follower assembly includes a limiting slide and a limiting seat. The limiting slide is disposed outside the top end of the cutting blade, and the limiting seat is fixedly installed outside the bottom end of the limiting slide. The limiting seat is C-shaped, and one outer side of the cutting blade abuts against and fits against one inner side of the limiting seat.

[0013] Furthermore, a rotating rod is rotatably mounted through the outer edge of the cutting blade tip, and the rotating rod is fixedly mounted inside the limiting seat. A sliding groove is opened through the top edge of the nail cartridge seat, and the limiting slide is slidably engaged inside the sliding groove. A push rod is fixedly mounted at one end of the limiting slide.

[0014] Furthermore, a soft rubber head is fitted to the outer side of the end of the staple cartridge seat away from the insertion tube. Two locking holes are symmetrically opened on the outer side of the end of the staple cartridge seat near the soft rubber head. A soft rubber buckle is fixedly installed on the outer side of the soft rubber head near each locking hole. The soft rubber buckle is abutted and locked inside the locking hole on the corresponding side. One of the locking holes is electrically connected to the inside of the liquid storage chamber. A rubber sheet is fixedly installed inside the locking hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. By pushing the limit slide and cutting blade with the push rod, the injection component is triggered to spray the healing-promoting liquid evenly on the fresh cut wound. The sprayed liquid can quickly form a highly adhesive protective film on the wound surface, effectively isolating the wound from the stimulation of peritoneal effusion and instrument friction, reducing the risk of postoperative tissue adhesion and avoiding delayed wound healing due to prolonged exposure time. It provides immediate protection for early anastomotic healing, which not only makes up for the shortcomings of existing equipment that can only cut and anastomose but cannot simultaneously ensure wound repair conditions, but also shortens the healing cycle and reduces the risk of complications such as anastomotic bleeding and dehiscence, meeting the clinical need for efficient and safe healing.

[0017] 2. By incorporating a follow-up component, the internal cutter of this electric laparoscopic anastomosis device can rotate around the rotating rod to overcome obstacles when resetting after cutting if subjected to resistance. During resetting, the cutter will not rigidly contact the contact wheel, thus preventing the injection component from being triggered again. This effectively prevents the repeated spraying of healing-promoting fluid, avoiding waste of active ingredients and preventing abnormal healing environments caused by excessive wound moisture. Simultaneously, this rotating obstacle-overcoming design prevents the cutter from generating forceful pulling force when encountering residual tissue or the anastomosis edge during resetting. Instead, it adapts to the tissue shape through its own rotation, reducing friction and traction on the fresh wound and surrounding fragile tissues, further reducing the risk of tissue damage and ensuring the integrity of the tissues around the anastomosis. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0020] Figure 3 This is a three-dimensional structural diagram of the limiting seat and the cutting blade of the present invention;

[0021] Figure 4 This is a bottom view of the limiting slide and limiting seat of the present invention;

[0022] Figure 5 This is a partial cross-sectional three-dimensional structural diagram of the anvil and the liquid storage cavity of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the soft rubber head and soft rubber buckle of the present invention;

[0024] Figure 7 This is a partial cross-sectional perspective view of the three-dimensional structure of the anvil and suction cylinder of the present invention;

[0025] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B;

[0026] Figure 9 This is a partial cross-sectional three-dimensional structural schematic diagram of the suction cylinder and piston block of the present invention;

[0027] Figure 10 A schematic diagram demonstrating the operation of the liquid injection component triggered by the movement of the cutting blade;

[0028] Figure 11 This is a schematic diagram demonstrating the rotation of the cutting blade after it resets and contacts the abutment wheel.

[0029] The components represented by each number in the attached diagram are listed below: 1. Anastomosis device body; 2. Straight tube; 3. Insertion tube; 4. Staple cartridge seat; 5. Staple seat; 6. Slide groove; 7. Limiting slide; 8. Limiting seat; 9. Cutting blade; 10. Rotating rod; 11. Push rod; 12. Cutting groove; 13. Titanium staple forming groove; 14. Soft rubber head; 15. Soft rubber buckle; 16. Liquid storage chamber; 17. Engaging hole; 18. Rubber sheet; 19. Limiting through groove; 20. Rotating block; 21. Mounting cavity; 22. Limiting rod; 23. Rotating shaft; 24. Abutment wheel; 25. Suction cylinder; 26. Limiting frame; 27. Limiting pull rod; 28. Connecting block; 29. ​​Connecting shaft; 30. Piston block; 31. One-way inlet valve tube; 32. Return spring; 33. One-way drain valve tube; 34. Discharge head; 35. Guide groove. Detailed Implementation

[0030] 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.

[0031] Example 1: Please refer to Figure 1 - Figure 10 A stable-propelled electric laparoscopic stapler includes a stapler body 1, a straight tube 2 fixed to one end of the stapler body 1, and an insertion tube 3 inserted into one end of the straight tube 2. The end of the insertion tube 3 away from the straight tube 2 is provided with a staple cartridge seat 4 for installing a staple cartridge via a movable hinge mechanism. A staple anchor seat 5 for assisting in the closure of titanium staples is rotatably mounted on one side of the staple cartridge seat 4. A cutting blade 9 is provided in the middle of one side of the staple cartridge seat 4. A cutting groove 12 is embedded in the middle of the staple cartridge seat 4. Several... A titanium nail forming groove 13 is provided. The nail cartridge seat 4 has an installation cavity 21 inside near the cutting groove 12. An injection component is provided between the installation cavity 21 and the cutting groove 12. The injection component includes several limiting through grooves 19 and several suction cylinders 25. The several limiting through grooves 19 are equally spaced and are opened through the interior of the nail cartridge seat 4. The opening area of ​​the limiting through grooves 19 is between the cutting groove 12 and the installation cavity 21. The several suction cylinders 25 are fixedly installed on the bottom wall of the installation cavity 21 at equal intervals along the direction corresponding to the limiting through grooves 19.

[0032] Each limiting slot 19 has a rotating block 20 installed at an incline inside. A limiting rod 22 is fixedly installed through the rotating block 20 near the middle position. Both ends of the limiting rod 22 are embedded and rotatably installed on the inner wall of the mounting cavity 21. A rotating shaft 23 is rotatably installed at one end of the rotating block 20 that extends into the bottom of the cutting groove 12.

[0033] A contact wheel 24 is fixedly installed through the outside of the rotating shaft 23. A guide groove 35 is opened through the end of the rotating block 20 away from the contact wheel 24. A connecting shaft 29 is slidably engaged inside the guide groove 35. A connecting block 28 is rotatably installed through the outside of the connecting shaft 29.

[0034] A limiting frame 26 is fixedly installed at the top center of the suction cylinder 25. A limiting rod 27 is vertically and slidably installed inside the limiting frame 26. The top of the limiting rod 27 is fixedly installed to the bottom of the connecting block 28. A piston block 30 is fixedly installed at the bottom of the limiting rod 27. The piston block 30 is slidably and sealingly installed inside the suction cylinder 25.

[0035] The suction cylinder 25 has a one-way liquid inlet valve pipe 31 fixedly installed inside below the piston block 30. A liquid storage chamber 16 is opened inside one side of the nail chamber seat 4. The input end of the one-way liquid inlet valve pipe 31 is fixedly installed inside the bottom side of the liquid storage chamber 16.

[0036] Two one-way drain valves 33 are symmetrically installed inside the suction cylinder 25 near the one-way inlet valve pipe 31. Several discharge heads 34 are embedded and fixed at equal intervals on the top of the nail chamber seat 4 on both sides of the cutting groove 12. The input end of each discharge head 34 is connected and fixed to the output end of a one-way drain valve pipe 33 on the corresponding side.

[0037] A return spring 32 is sleeved on the outside of the limiting rod 27. The two ends of the return spring 32 are respectively fixedly installed on the outside of the bottom end of the limiting frame 26 and the outside of the top end of the piston block 30.

[0038] A soft rubber head 14 is fitted to the outer side of the end of the staple cartridge 4 away from the insertion tube 3. Two locking holes 17 are symmetrically opened on the outer side of the end of the staple cartridge 4 near the soft rubber head 14. A soft rubber buckle 15 is fixedly installed on the outer side of the soft rubber head 14 near each locking hole 17. The soft rubber buckle 15 is engaged and installed inside the corresponding locking hole 17. One of the locking holes 17 is connected to the inside of the liquid storage chamber 16. A rubber sheet 18 is fixedly installed inside the locking hole 17.

[0039] In this embodiment, the procedure can be divided into a preparation stage, a surgical operation stage, and a liquid injection component triggering and spraying stage. Each stage works together to achieve stable cutting and anastomosis and wound protection, as detailed below:

[0040] I. Preoperative Preparation Stage (Liquid Filling and Component Assembly)

[0041] Preparing the staple cartridge and liquid: First, insert the medical titanium staples into the built-in staple cartridge of the staple cartridge holder 4, ensuring that the titanium staples are aligned with the titanium staple forming groove 13 of the staple holder 5. Then, the soft rubber head 14 at the end of the staple cartridge 4 furthest from the insertion tube 3 is removed. The soft rubber head 14, through its structural design, achieves a dual function: sealing the fluid reservoir 16 and buffering tissue contact. Firstly, the soft rubber head 14 engages with the engagement hole 17 of the staple cartridge 4 via the soft rubber clip 15, its edge tightly fitting the end surface of the staple cartridge 4 furthest from the insertion tube 3. Simultaneously, the engagement hole 17, which communicates with the fluid reservoir 16, contains a rubber sheet 18. When the soft rubber head 14 engages, it compresses the rubber sheet 18, causing it to elastically deform, forming a double protective structure. This prevents impurities from entering the fluid reservoir 16 and contaminating the internal healing-promoting fluid, and also prevents leakage of the healing-promoting fluid through the engagement hole 17 during instrument movement, ensuring the sterility and dosage stability of the healing-promoting fluid. Secondly, when the staple cartridge 4 needs to be inserted into the interstitial space, the soft rubber head 14 acts as… The front contact component of the staple cartridge seat 4 is made of a medical-grade flexible material (such as silicone) that can deform moderately when in contact with tissue, buffering the contact force of the staple cartridge seat 4 during advancement. Compared with the rigid structure of the front end of the staple cartridge seat 4 of existing staplers, the soft rubber head 14 can avoid direct hard contact with fragile areas such as the gastrointestinal mucosa and thin abdominal wall tissue, preventing tissue damage and bleeding due to excessive contact force, reducing trauma and discomfort to the patient when the instrument is inserted. Moreover, this flexible deformation will not interfere with the subsequent closing action of the staple cartridge seat 4 and the pin seat 5, ensuring that the sealing protection and tissue protection functions are performed synchronously and stably. At the same time, the healing promotion solution used here is medical-grade hyaluronic acid gel. This material is non-allergenic and can form an adhesive protective film on the wound surface, while also assisting in the repair of epithelial cells. It is a clinically mature wound care material, and will be referred to as "healing promotion solution" from now on.

[0042] Filling the reservoir 16: After drawing the healing-promoting solution with a sterile syringe, insert the needle into the reservoir 16 and squeeze the syringe to push the healing-promoting solution into the reservoir 16. After filling, remove the needle, and the rubber sheet 18 will automatically seal to prevent liquid leakage. Finally, re-lock the sterilized soft rubber head 14 into the locking hole 17 using the soft rubber buckle 15.

[0043] II. Intraoperative Procedures (Tissue Clamping and Stable Advancement)

[0044] Instrument positioning and tissue clamping: The assembled stapler is inserted into the patient's body through the laparoscopic channel. The movable hinge mechanism at the end of the insertion tube 3 is controlled by the stapler gun body 1 to adjust the angle of the staple cartridge seat 4, so that the tissue to be anastomosed is aligned with the clamping area between the staple cartridge seat 4 and the anvil seat 5. The stapler gun body 1 is operated to drive the anvil seat 5 to rotate and close around the staple cartridge seat 4, stably clamping the tissue between the two.

[0045] The cutting blade 9 is steadily advanced: the push rod 11 is driven by the built-in power system of the stapler gun body 1. The push rod 11 drives the limiting slide 7 to slide along the slide groove 6 at the top of the staple cartridge seat 4. The guide effect of the slide groove 6 on the limiting slide 7, together with the constraint of the limiting seat 8 and the rotating rod 10 on the cutting blade 9, makes the cutting blade 9 advance steadily and uniformly along the cutting groove 12, avoiding uneven cutting or misalignment of titanium staples due to advance deviation, and ensuring the synchronous accuracy of cutting and staples.

[0046] III. Injection Component Triggering and Spraying Phase (Simultaneous Wound Protection)

[0047] Healing-promoting fluid suction trigger: After the cutting blade 9 is steadily advanced a certain distance along the cutting groove 12, its blade sidewall contacts the outer peripheral surface of the contact wheel 24 at the bottom of the cutting groove 12. The cutting blade 9 continuously advances, generating a horizontal thrust, which is converted into downward pressure on the contact wheel 24. Since one end of the rotating block 20 is connected to the contact wheel 24, and the middle of the rotating block 20 is limited by the limiting rod 22, the downward pressure causes the rotating block 20 to rotate around the limiting rod 22 at a certain angle. When the rotating block 20 rotates, the end away from the contact wheel 24 is simultaneously lifted upward, thereby driving the connecting block 28 and the connected limiting rod 27 to rise vertically. Finally, the piston block 30 at the bottom of the limiting rod 27 is pulled upward within the suction cylinder 25. At this time, the volume of the space below the piston block 30 in the suction cylinder 25 increases, forming a negative pressure environment. The healing promoting liquid in the storage chamber 16 is sucked into the suction cylinder 25 along the one-way inlet valve pipe 31 (which only allows liquid to flow from the storage chamber 16 to the suction cylinder 25). At the same time, the return spring 32 outside the limiting rod 27 is stretched, storing elastic potential energy, and completing the preparation action for suction of the healing promoting liquid.

[0048] During this process, the rotation design of the contact wheel 24 can reduce the sliding friction with the cutting blade 9, avoiding blade wear or jamming during advancement; the fulcrum function of the limit rod 22 ensures the stability of the movement trajectory of the rotating block 20, avoids collision and interference with the inner wall of the limit groove 19, and ensures the accurate triggering of the suction action.

[0049] Precise spraying and wound protection: As the cutting blade 9 continues to advance and completely disengages from the current contact wheel 24, the tissue in the area has been severed by the cutting blade 9, and the titanium nails in the cartridge are ejected under the propulsive force of the cutting blade 9. The titanium nail forming groove 13 against the nail holder 5 bends into a "B" shape, achieving mechanical fixation of the tissue. At this time, the return spring 32 releases its elastic potential energy, pushing the piston block 30 to slide downward in the suction cylinder 25. The pressure inside the suction cylinder 25 increases, and the healing-promoting fluid is delivered to the discharge head 34 at the top of the cartridge holder 4 through the one-way drainage valve pipe 33 (which only allows the liquid to flow from the suction cylinder 25 to the discharge head 34). The discharge head 34 then sprays the fluid evenly onto the fresh wound on both sides of the cutting groove 12. The timing of this spray is precisely matched to the completion of the cutting and anastomosis, avoiding premature spraying that could be scraped off by the cutting blade 9 or wasted on uncut areas. At the same time, the healing-promoting fluid quickly forms a protective film on the wound surface, isolating it from the stimulation of peritoneal fluid and friction with instruments, assisting wound repair, reducing the risk of postoperative adhesions, and ensuring early healing of the anastomosis.

[0050] Example 2: Please refer to Figure 7 - Figure 11 This embodiment further illustrates Example 1, wherein a follow-up component is provided at the top of the cutting blade 9.

[0051] The follower assembly includes a limiting slide 7 and a limiting seat 8. The limiting slide 7 is located outside the top of the cutting blade 9, and the limiting seat 8 is fixedly installed outside the bottom of the limiting slide 7. The limiting seat 8 is C-shaped, and one side of the outer side of the cutting blade 9 abuts against and fits against one side of the inner wall of the limiting seat 8.

[0052] A rotating rod 10 is rotatably mounted through the top of the cutting blade 9. The rotating rod 10 is fixedly mounted inside the limiting seat 8. A sliding groove 6 is opened through the top of the nail cartridge seat 4. The limiting slide 7 is slidably engaged inside the sliding groove 6. A push rod 11 is fixedly mounted on one end of the limiting slide 7.

[0053] In this embodiment, by adding a follower component to the top of the cutting blade 9, the function of switching between stable force transmission during the cutting stage and flexible obstacle avoidance during the reset stage is realized. The core revolves around the coordinated cooperation of the limiting slide 7, the limiting seat 8, the rotating rod 10, and the slide groove 6, as detailed below:

[0054] I. Cutting Stage: The follow-up component ensures stable advance and effective cutting of the cutting blade 9.

[0055] When the stapler enters the tissue cutting stage, the stapler gun 1 drives the push rod 11 to move in a straight line. The push rod 11 drives the limiting slide 7, which is fixed to it, to slide along the groove 6 at the top of the staple cartridge seat 4. Since the limiting seat 8 is fixed at the bottom of the limiting slide 7 and the limiting seat 8 has a C-shaped structure, one side of its inner wall is in close contact with one side of the outer wall of the cutting blade 9. At the same time, the top of the cutting blade 9 is rotatably connected to the limiting seat 8 through the rotating rod 10. In this state, the pushing force on the cutting blade 9 is directly transmitted through the contact surface of the limiting seat 8. The single-sided contact structure of the C-shaped limiting seat 8 forms a support, restricting the cutting blade 9 from rotating around the rotating rod 10. The cutting blade 9 can only move in a straight line along the cutting groove 12 with the sliding of the limiting slide 7, and will not deflect due to tissue resistance or fluctuations in pushing force. This constraint ensures that the blade of the cutting blade 9 always remains perpendicular to the tissue cutting surface, achieving a smooth cut of the tissue and avoiding problems such as incomplete cutting and tissue tearing caused by the rotation of the cutting blade 9.

[0056] II. Reset Phase: The follow-up component enables flexible obstacle avoidance and anti-pull protection for the cutting blade 9.

[0057] After the cutting is completed, the stapler gun 1 drives the push rod 11 to move in the opposite direction, causing the limiting slide 7 and the cutting blade 9 to return to their initial positions along the slide groove 6. If the blade or body of the cutting blade 9 comes into contact with residual tissue at the edge of the anastomosis, the tail of the titanium nail, or other fragile tissue in the abdominal cavity during the resetting process, it will be subjected to a reverse resistance force. At this time, since the limiting seat 8 has a C-shaped structure, it only contacts the cutting blade 9 on one side, while the other side has reserved rotation space. The resistance force on the cutting blade 9 will break the initial force balance, causing it to rotate around the rotating rod 10. The direction of rotation is the same as the direction of the resistance force, thus achieving rotation over obstacles: for example, when the side of the cutting blade 9 is contacted by tissue, it will rotate to the side away from the contact surface, and the blade will avoid the tissue contact point, avoiding hard pushing or scraping of the tissue.

[0058] This rotating obstacle-avoidance design serves a dual purpose: First, it avoids the cutting blade 9 rigidly contacting the contact wheel 24 during repositioning. If the cutting blade 9 remains rigidly repositioned, it is easy to press down on the contact wheel 24 again, triggering the injection component and causing repeated spraying of the healing-promoting fluid. The rotation of the follow-up component allows the cutting blade 9 to avoid the contact wheel 24, preventing fluid waste and excessive wetting of the wound. Second, it reduces tissue pulling damage. When the cutting blade 9 encounters tissue obstruction, it adapts to the tissue shape by rotating itself, rather than forcibly pushing or pulling the tissue. This is especially beneficial for fresh wound tissue after anastomosis, where the tissue is relatively fragile after titanium screw fixation. It can avoid risks such as tissue dislodgement due to stress around the screw and secondary tearing of the wound, ensuring the integrity of the tissue around the anastomosis and further reducing the probability of postoperative bleeding, infection, and other complications.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stapling device with stable propulsion, comprising a stapling device body (1), a straight tube (2) fixed to one end of the stapling device body (1), and an insertion tube (3) inserted into one end of the straight tube (2), characterized in that: The end of the insertion tube (3) away from the straight tube (2) is provided with a staple cartridge seat (4) for installing staple cartridges through a movable hinge mechanism. A staple anchor seat (5) for assisting the closing of titanium staples is rotatably installed on one side of the staple cartridge seat (4). A cutting blade (9) is provided in the middle of one side of the staple cartridge seat (4). A follower component is provided at the top of the cutting blade (9). A cutting groove (12) is embedded in the middle of the staple cartridge seat (4). Several titanium staple forming grooves (13) are provided on the outside of the staple anchor seat (5) on both sides of the cutting groove (12). An installation cavity (21) is provided in the inside of the staple cartridge seat (4) near the cutting groove (12). An injection component is provided between the installation cavity (21) and the cutting groove (12). The liquid injection assembly includes several limiting through grooves (19) and several suction cylinders (25). Several limiting through grooves (19) are equally spaced through the interior of the staple cartridge seat (4), and the opening area of ​​the limiting through grooves (19) is between the cutting groove (12) and the mounting cavity (21). Several suction cylinders (25) are fixedly installed on the bottom wall of the mounting cavity (21) at equal intervals along the direction corresponding to the limiting through grooves (19). The follower assembly includes a limiting slide (7) and a limiting seat (8). The limiting slide (7) is disposed outside the top end of the cutting blade (9). The limiting seat (8) is fixedly installed outside the bottom end of the limiting slide (7). The limiting seat (8) is C-shaped. The outer side of one side of the cutting blade (9) abuts against and fits against the inner side of one side of the limiting seat (8). A rotating rod (10) is rotatably mounted through the top of the cutting blade (9). The rotating rod (10) is fixedly mounted inside the limiting seat (8). A sliding groove (6) is opened through the top of the nail cartridge seat (4). The limiting slide (7) is slidably engaged inside the sliding groove (6). A push rod (11) is fixedly mounted at one end of the limiting slide (7).

2. The stably propelled electric laparoscopic anastomosis device according to claim 1, characterized in that: Each of the limiting through slots (19) is provided with a rotating block (20) at an incline. A limiting rod (22) is fixedly installed inside the rotating block (20) near the middle position. Both ends of the limiting rod (22) are embedded and rotatably installed on the inner wall of the mounting cavity (21). A rotating shaft (23) is rotatably installed at one end of the rotating block (20) that extends into the bottom of the cutting groove (12).

3. The stably propelled electric laparoscopic anastomosis device according to claim 2, characterized in that: A contact wheel (24) is fixedly installed through the outside of the rotating shaft (23). A guide groove (35) is opened through the end of the rotating block (20) away from the contact wheel (24). A connecting shaft (29) is slidably engaged inside the guide groove (35). A connecting block (28) is rotatably installed through the outside of the connecting shaft (29).

4. The stably propelled electric laparoscopic anastomosis device according to claim 3, characterized in that: A limiting frame (26) is fixedly installed at the top center of the suction cylinder (25). A limiting rod (27) is vertically and slidably installed inside the limiting frame (26). The top of the limiting rod (27) is fixedly installed to the bottom of the connecting block (28). A piston block (30) is fixedly installed at the bottom of the limiting rod (27). The piston block (30) is slidably and sealingly installed inside the suction cylinder (25).

5. The stably propelled electric laparoscopic anastomosis device according to claim 4, characterized in that: The suction cylinder (25) has a one-way liquid inlet valve pipe (31) fixedly installed inside below the piston block (30). A liquid storage chamber (16) is opened inside one side of the nail chamber seat (4). The input end of the one-way liquid inlet valve pipe (31) is fixedly installed inside the bottom side of the liquid storage chamber (16).

6. The stably propelled electric laparoscopic anastomosis device according to claim 5, characterized in that: Two one-way drain valves (33) are symmetrically installed inside the suction cylinder (25) near the one-way inlet valve (31). Several discharge heads (34) are embedded and fixed at equal intervals on the top of the nail chamber seat (4) on both sides of the cutting groove (12). The input end of each discharge head (34) is connected and fixed to the output end of a one-way drain valve (33) on the corresponding side.

7. The stably propelled electric laparoscopic anastomosis device according to claim 4, characterized in that: The limiting rod (27) is fitted with a return spring (32), and the two ends of the return spring (32) are respectively fixedly installed on the bottom of the limiting frame (26) and the top of the piston block (30).

8. The stably propelled electric laparoscopic anastomosis device according to claim 5, characterized in that: The staple cartridge seat (4) is fitted with a soft rubber head (14) at the end away from the insertion tube (3). Two locking holes (17) are symmetrically opened at the end of the staple cartridge seat (4) near the soft rubber head (14). A soft rubber buckle (15) is fixedly installed on the outside of each locking hole (17) near the soft rubber head (14). The soft rubber buckle (15) is engaged with the corresponding locking hole (17) inside. One of the locking holes (17) is connected to the inside of the liquid storage chamber (16). A rubber sheet (18) is fixedly installed inside the locking hole (17).

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