A linear cutting stapler with precise firing and positioning

Abstract

This invention discloses a linear stapler with precise firing and positioning, relating to the field of staplers. In this invention, the staple cartridge is installed within a staple cartridge holder via adjusting bolts. The height of the staple cartridge within the holder can be adjusted by raising and lowering the bolts, thereby adjusting the distance between the staple cartridge and the anvil plate. This allows the staple cartridge and anvil plate to work together to clamp and cut tissues of different thicknesses, improving the applicability of the stapler. Furthermore, an adjusting plate is installed on the side of the staple cartridge, and this adjusting plate is connected to the firing assembly via a lifting plate. When the staple cartridge is adjusted, the firing assembly can be adjusted in height using the adjusting plate and the lifting plate, ensuring that the height of the firing assembly is adjusted synchronously with the staple cartridge. This guarantees that the firing assembly can accurately fire the titanium staples within the adjusted staple cartridge, ensuring the normal operation of the stapler. Simultaneously, the adjustment of the staple cartridge's height allows for quick and convenient adjustment of the clamping position of the staple cartridge and anvil plate on the tissue.

Description

Technical Field

[0001] This invention belongs to the field of staplers, and more specifically, relates to a linear cutting stapler with precise firing and positioning. Background Technology

[0002] A stapler is a surgical instrument mainly used for severing, removing, or creating anastomoses in tissues. Staplers are commonly used in surgical procedures in departments such as general surgery, thoracic surgery, urology, obstetrics and gynecology, and pediatrics.

[0003] Chinese patent CN206342506U discloses a dual-positioning linear stapler, including an anvil, a staple cartridge assembly, a clamping plate assembly, a pusher plate assembly, and a positioning assembly. The positioning assembly includes an upper positioning member and a lower positioning member. The upper positioning member is located between the upper end of the anvil and the staple cartridge assembly, and the lower positioning member is located between the lower ends of the clamping plate assembly and the staple cartridge assembly. The anvil is fixed to the left end of the clamping plate assembly, the staple cartridge assembly is located at the right end of the clamping plate assembly, and the pusher plate assembly is located on the right side of the staple cartridge assembly. This invention improves the positioning and guiding mechanism, eliminates problems such as anastomosis deviation caused by misalignment between the anvil and the front end of the staple cartridge assembly, and reduces surgical risks. However, this stapler requires manual operation to fire the titanium staples and move the cutter. The firing and cutting process requires enormous force to complete the cutting and closure of the anastomosis, placing extremely high demands on the user. If the skill and force are not well controlled, the instrument may fail to fire or may only fire halfway. Insufficient firing force will affect the tissue closure effect, leading to incomplete cutting and closure, and ultimately surgical failure, posing a very high risk. At the same time, it cannot adjust the distance between the anvil and the staple cartridge, which is not only inconvenient for cutting and anastomosing tissues of different thicknesses, but also requires that when the clamping position of the anvil and the staple cartridge on the tissue is incorrect and the clamping position needs to be adjusted, the anvil and the staple cartridge must first be disassembled, then moved and adjusted to the appropriate position on the tissue, and then closed to clamp the tissue. This makes the adjustment of the tissue position quite troublesome. Summary of the Invention

[0004] To address the problems in related technologies, this invention proposes a linear cutting stapler with precise firing and positioning. The firing assembly and blade are driven by a lead screw drive assembly to complete the firing and cutting process. Compared with manual drive, it can provide a more stable firing and cutting driving force, thereby making the cutting and anastomosis process of the stapler more stable, reducing the difficulty of using the stapler, and improving the safety of using the stapler.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a linear stapler with precise firing and positioning, comprising a stapler main frame, a stapler cutting and ablation mechanism, and an adjustment mechanism. The stapler main frame includes an anvil, a staple cartridge holder, and a connecting assembly. An anvil plate is fixedly installed at one end of the anvil, and a staple cartridge is installed at one end of the staple cartridge holder. The anvil and the staple cartridge holder can be joined and separated by the connecting assembly. The stapler cutting and ablation mechanism includes a screw drive assembly, a firing assembly, and a blade. The screw drive assembly, the firing assembly, and the blade are all installed within the staple cartridge holder, and the firing assembly and the blade are both disposed within the staple cartridge. On the back, the blade extends through the staple cartridge to the top of the staple cartridge seat. The lead screw drive assembly drives the firing assembly and the blade to move linearly along the staple cartridge. The adjustment mechanism includes a staple cartridge lifting adjustment unit and a firing assembly lifting adjustment unit. The staple cartridge is installed in the staple cartridge seat through the staple cartridge lifting unit. The firing assembly lifting adjustment unit is driven between the staple cartridge and the firing assembly. When the staple cartridge lifting adjustment unit drives the staple cartridge to move up and down along the staple cartridge seat, the firing assembly lifting adjustment unit drives the firing assembly to move up and down synchronously.

[0007] Furthermore, the connecting assembly includes a locking block, a locking slot, a rotating handle, an upper connecting plate, and a lower connecting plate. The locking block is fixedly installed at one end of the bottom surface of the anvil, and the locking slot is fixedly installed at one end of the top surface of the staple cartridge seat. The upper connecting plate is fixedly installed on the bottom surface of the anvil, and a pin is fixedly installed on the upper connecting plate. The lower connecting plate is fixedly installed on the bottom surface of the staple cartridge seat, and a pin groove with an upward opening is provided on the lower connecting plate. The rotating handle is disposed on the bottom surface of the staple cartridge seat, and one end of the rotating handle is rotatably connected to the staple cartridge seat via a hinge shaft. An arc-shaped locking plate is fixedly installed on the inner side of the rotating handle.

[0008] Furthermore, the nail cartridge has an opening slot in the middle, and several nail slots are symmetrically arranged on both sides of the opening slot. Each nail slot is fitted with a titanium nail, and the bottom surface of the nail-stopping plate has several nail-stopping slots that correspond one-to-one with the nail slots.

[0009] Furthermore, the lead screw drive assembly includes a motor and a lead screw. The motor is fixedly installed inside the staple cartridge holder, and the lead screw is rotatably installed inside the staple cartridge holder. The motor is connected to one end of the lead screw via a transmission connection. A threaded sleeve is threadedly installed on the lead screw, and a slider is fixedly installed on the surface of the threaded sleeve. The bottom surface of the slider is slidably installed inside the staple cartridge holder. A push-pull rod extending to the back of the staple cartridge is fixedly installed at one end of the slider. A movable seat is fixedly installed at the end of the push-pull rod, and the firing assembly and the blade are fixedly installed on the movable seat.

[0010] Furthermore, the firing assembly includes a translation wedge block and a lifting wedge block. Two sets of translation wedge blocks are provided, and the two sets of translation wedge blocks are symmetrically inserted into both ends of the moving base. A plurality of lifting wedge blocks are provided, and the plurality of lifting wedge blocks are respectively inserted into a plurality of nail slots. At the same time, the lifting wedge blocks abut against the bottom end of the titanium nail.

[0011] Furthermore, a limiting block is fixedly installed in the middle of the top surface of the movable seat, and the limiting block is slidably engaged in the opening groove in the middle of the staple cartridge.

[0012] Furthermore, the staple cartridge lifting adjustment unit includes several adjusting bolts, all of which are rotatably mounted on the staple cartridge seat, and all of the adjusting bolts are threadedly connected to the staple cartridge via external threads.

[0013] Furthermore, the firing assembly lifting and adjusting unit includes a lifting plate, an adjusting plate, a connecting plate, and a lifting slide. Two sets of adjusting plates are provided, each set positioned below the staple cartridge on both sides. Both sets of adjusting plates are fixedly connected to the staple cartridge via the connecting plate. Each set of adjusting plates has a first guide slope that gradually slopes upwards from left to right at its front end. Two sets of lifting slides are provided, each set positioned on both sides of the movable base. The lifting plate is slidably installed within each set of lifting slides. The inner end of the lifting plate is fixedly connected to the translation wedge block. A second guide slope that gradually slopes upwards from left to right is provided on the right side of the lifting plate.

[0014] The present invention has the following beneficial effects:

[0015] 1. This invention uses a lead screw drive assembly to drive the firing assembly and the blade to complete the firing and cutting process. Compared with manual drive, it can provide a more stable firing and cutting driving force, thereby making the cutting and anastomosis process of the stapler more stable, reducing the difficulty of using the stapler, and improving the safety of using the stapler.

[0016] 2. In this invention, the staple cartridge is installed in the staple cartridge holder via adjusting bolts. The height of the staple cartridge within the holder can be adjusted by raising and lowering the adjusting bolts, thereby adjusting the distance between the staple cartridge and the anvil plate. This allows the staple cartridge and the anvil plate to work together to clamp and cut tissues of different thicknesses, improving the applicability of the stapler. Furthermore, an adjusting plate is installed on the side of the staple cartridge, and this adjusting plate is connected to the firing assembly via a lifting plate. When the staple cartridge is adjusted, the firing assembly can be adjusted in height using the adjusting plate and the lifting plate. This ensures that the height of the firing assembly is adjusted synchronously with the staple cartridge, guaranteeing that the firing assembly can accurately fire the titanium staples within the adjusted staple cartridge, thus ensuring the accuracy of the stapling procedure. The device functions normally. On the other hand, when the staple cartridge and the anvil plate are not clamped correctly on the tissue, the distance between the staple cartridge and the anvil plate can be increased by adjusting the bolts, thereby loosening the clamping of the staple cartridge and the anvil plate on the tissue. Then, the position of the staple cartridge and the anvil plate can be adjusted along the tissue until the staple cartridge and the anvil plate reach the position on the tissue that needs to be cut and anastomosed. Then, the staple cartridge is driven to move and reset by adjusting the bolts, so that the staple cartridge and the anvil plate clamp the tissue again. Then, the cutting and anastomosis operation can be performed. By adjusting the height of the staple cartridge, the clamping position of the staple cartridge and the anvil plate on the tissue can be quickly and conveniently adjusted, thus making it convenient for the staff to adjust the cutting and anastomosis position on the tissue during surgery.

[0017] 3. In this invention, the staple cartridge seat and the anvil seat are fixedly connected at two points through a quick-locking mechanism and a pin-hole engagement. Based on the principle that two points define a straight line, the staple cartridge seat and the anvil seat can be precisely aligned on the same straight line, thereby ensuring precise alignment of the titanium staples inside the cartridge with the anvil slots on the anvil plate. This improves the accuracy of titanium staple firing, reduces misalignment and poor amalgamation, and enhances the closure effect of the titanium staples on the tissue. Furthermore, the pin-hole connection is locked and unlocked via an arc-shaped locking plate driven by a rotating handle, making locking and unlocking the pin-hole more convenient and quick, thus facilitating the installation and disassembly of the staple cartridge seat and the anvil seat.

[0018] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the anastomosis device of the present invention when it is deployed;

[0021] Figure 2 For the present invention Figure 1A magnified schematic diagram of the structure at point A;

[0022] Figure 3 This is a three-dimensional cross-sectional view of the anastomosis device of the present invention when it is deployed;

[0023] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point B;

[0024] Figure 5 This is a three-dimensional cross-sectional view of the staple cartridge holder of the present invention;

[0025] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point C;

[0026] Figure 7 This is a three-dimensional structural diagram of the anvil of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the anastomosis device of the present invention when it is closed.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Anastomosis device main frame; 11. Anchor seat; 12. Anchor plate; 13. Staple cartridge seat; 14. Staple cartridge; 15. Locking block; 16. Locking groove; 17. Rotating handle; 18. Upper connecting plate; 19. Pin shaft; 110. Lower connecting plate; 111. Pin groove; 112. Arc-shaped locking plate; 113. Staple groove; 114. Titanium staple; 115. Anchor groove; 116. Hinge shaft; 2. Cutting and anastomosis mechanism; 21. Motor; 22. Lead screw; 23. Slider; 24. Push-pull rod; 25. Blade; 26. Threaded sleeve; 27. Moving seat; 28. Translation wedge block; 29. ​​Lifting wedge block; 210. Limiting block; 3. Adjustment mechanism; 31. Adjusting bolt; 32. Lifting plate; 33. Adjusting plate; 34. Connecting plate; 35. First guide slope; 36. Lifting slide; 37. Second guide slope. Detailed Implementation

[0030] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0031] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the invention.

[0032] Please see Figure 1 , Figure 4 , Figure 8 As shown, this invention is a linear cutting and anastomosis device with precise firing and positioning, including a main frame 1, a cutting and anastomosis mechanism 2, and an adjustment mechanism 3. The main frame 1 includes an anvil 11, a staple cartridge seat 13, and a connecting assembly. An anvil plate 12 is fixedly installed at one end of the anvil 11, and a staple cartridge 14 is installed at one end of the staple cartridge seat 13. The anvil 11 and the staple cartridge seat 13 can be joined together and separated by the connecting assembly. The cutting and anastomosis mechanism 2 includes a screw drive assembly, a firing assembly, and a blade 25. The screw drive assembly, the firing assembly, and the blade 25 are all installed in the staple cartridge seat 13, and the firing assembly and the blade 25 are both provided with On the back of the staple cartridge 14, the blade 25 extends through the staple cartridge 14 and above the staple cartridge seat 13. The lead screw drive assembly is used to drive the firing assembly and the blade 25 to move linearly along the staple cartridge 14. The adjustment mechanism 3 includes a staple cartridge lifting adjustment unit and a firing assembly lifting adjustment unit. The staple cartridge 14 is installed in the staple cartridge seat 13 through the staple cartridge lifting unit. The firing assembly lifting adjustment unit is driven between the staple cartridge 14 and the firing assembly. When the staple cartridge lifting adjustment unit drives the staple cartridge 14 to move up and down along the staple cartridge seat 13, the firing assembly lifting adjustment unit drives the firing assembly to move up and down synchronously.

[0033] When cutting and anastomosing tissue, the staple cartridge 14 and the anvil plate 12 are first placed above and below the tissue, respectively. Then, the anvil seat 11 and the staple cartridge seat 13 are closed and connected and fixed between the anvil seat 11 and the staple cartridge seat 13 by the connecting assembly. Then, according to the tissue thickness, the height of the staple cartridge 14 is adjusted by the staple cartridge lifting adjustment unit so that the staple cartridge 14 fits with the anvil plate 12 to clamp the tissue. At the same time, the height of the firing assembly is adjusted synchronously with the lifting of the staple cartridge 14 so that the distance between the firing assembly and the staple cartridge 14 remains unchanged. Finally, the firing assembly and the blade 25 are driven to move linearly along the staple cartridge 14 by the screw drive assembly. When the blade 25 moves linearly, it cuts the clamped tissue, and when the firing assembly moves linearly, it drives the staple cartridge 14 to anastomose the tissue cut.

[0034] Please see Figures 1-2As shown, in one embodiment, the connecting assembly includes a locking block 15, a locking groove 16, a rotating handle 17, an upper connecting plate 18, and a lower connecting plate 110. The locking block 15 is fixedly installed at one end of the bottom surface of the anvil 11, and the locking groove 16 is fixedly installed at one end of the top surface of the staple cartridge seat 13. The upper connecting plate 18 is fixedly installed on the bottom surface of the anvil 11, and a pin 19 is fixedly installed on the upper connecting plate 18. The lower connecting plate 110 is fixedly installed on the bottom surface of the staple cartridge seat 13, and a pin groove 111 with an upward opening is provided on the lower connecting plate 110. The rotating handle 17 is disposed on the bottom surface of the staple cartridge seat 13, and one end of the rotating handle 17 is rotatably connected to the staple cartridge seat 13 via a hinge shaft 116. An arc-shaped locking plate 112 is fixedly installed on the inner side of the rotating handle 17.

[0035] When it is necessary to connect and fix the anvil 11 to the staple cartridge seat 13, firstly, the rotating handle 17 is rotated and unfolded from the surface of the staple cartridge seat 13 via the hinge shaft 116. When the rotating handle 17 is rotated and unfolded, it drives the arc-shaped locking plate 112 to rotate and move counterclockwise, so that the arc-shaped locking plate 112 moves to the left side of the pin groove 111. Then, the anvil 11 and the staple cartridge seat 13 are aligned parallel to each other, so that the locking block 15 is engaged in the locking groove 16, and the pin 19 is engaged in the pin groove 111. Finally, the rotating handle 17 is rotated and pressed tightly against the surface of the staple cartridge seat 13. At this time, the rotating handle 17 drives the arc-shaped locking plate 112 to rotate and reset. During the reset process, the arc-shaped locking plate 112 abuts against the upper side of the pin 19, thereby locking and fixing the pin 19 in the pin groove 111, thus completing the two-point connection and fixation between the anvil 11 and the staple cartridge seat 13.

[0036] Please see Figure 4 , Figure 7 As shown, in one embodiment, the staple cartridge 14 has an opening slot in the middle, and several staple slots 113 are symmetrically arranged on both sides of the opening slot. Each staple slot 113 is fitted with a titanium staple 114. The bottom surface of the anvil plate 12 is provided with several anvil slots 115 that correspond one-to-one with the staple slots 113. The opening slot allows the blade 25 to extend to the outside of the staple cartridge 14 through the opening slot, thereby facilitating the cutting of tissue when the blade 25 moves. By setting the symmetrically distributed titanium staples 114 and anvil slots 115, the two cut ends of the tissue can be simultaneously matched by the titanium staples 114.

[0037] Please see Figures 2-4As shown, in one embodiment, the lead screw drive assembly includes a motor 21 and a lead screw 22. The motor 21 is fixedly installed in the staple cartridge seat 13, and the lead screw 22 is rotatably installed in the staple cartridge seat 13. The motor 21 is connected to one end of the lead screw 22. A threaded sleeve 26 is threadedly installed on the lead screw 22, and a slider 23 is fixedly installed on the surface of the threaded sleeve 26. The bottom surface of the slider 23 is slidably installed in the staple cartridge seat 13. A push-pull rod 24 extending to the back of the staple cartridge 14 is fixedly installed at one end of the slider 23. A movable seat 27 is fixedly installed at the end of the push-pull rod 24, and the firing assembly and the blade 25 are fixedly installed on the movable seat 27.

[0038] When the lead screw drive assembly is working, the motor 21 drives the lead screw 22 to rotate. When the lead screw 22 rotates, it drives the threaded sleeve 26 to move along the lead screw 22 towards the staple cartridge 14 through the threaded transmission. This, in turn, drives the slider 23, the push-pull rod 24, and the moving seat 27 to move towards the staple cartridge 14. The moving seat 27 then drives the firing assembly and the blade 25 to move and work. The drive of the motor 21 and the lead screw transmission, in conjunction with the firing assembly and the blade, provides a more stable firing and cutting driving force compared to manual drive. This makes the cutting and anastomosis process of the stapler more stable, reduces the difficulty of using the stapler, and improves the safety of using the stapler.

[0039] Please see Figure 4 , Figure 7 As shown, in one embodiment, the firing assembly includes a translation wedge block 28 and a lifting wedge block 29. Two sets of translation wedge blocks 28 are provided, and the two sets of translation wedge blocks 28 are symmetrically inserted into both ends of the movable base 27. A plurality of lifting wedge blocks 29 are provided, and the plurality of lifting wedge blocks 29 are respectively inserted into a plurality of nail slots 113. At the same time, the lifting wedge blocks 29 abut against the bottom end of the titanium nail 114.

[0040] As the movable seat 27 moves towards one end of the staple cartridge 14, it gradually moves to the bottom surface of the staple cartridge 14, simultaneously moving the translational wedge block 28 to the bottom end of the staple cartridge 14 and the blade 25 to the opening slot in the middle of the staple cartridge 14. Then, as the movable seat 27, translational wedge block 28, and blade 25 continue to move, the translational wedge block 28 moves past the bottom surface of the lifting wedge block 29, and as it passes, the inclined surface of the wedge block pushes the lifting wedge block 29 into the staple groove 113. This, in turn, pushes the titanium staple 114 in the staple groove 113 out through the lifting wedge block 29. After the end of the staple 114 passes through the tissue, it abuts against the staple groove 115. Under the abutment action of the staple groove 115, the end of the titanium staple 114 bends inward, so that the two ends of the titanium staple 114 are closed. Thus, the tissue is anastomosed by the bent and closed titanium staple 114. Meanwhile, the blade 25 cuts the tissue during the movement until the translation wedge block 28 and the blade 25 move to the end of the staple cartridge 14. At this time, the blade 25 completely cuts the tissue, and the translation wedge block 28 and the lifting wedge block 29 cooperate to completely fire the titanium staple 114 in the staple cartridge 14, thereby completely anastomosing the tissue cut through the titanium staple 114.

[0041] Please see Figure 4 , Figure 6 As shown, in one embodiment, a limiting block 210 is fixedly installed in the middle of the top surface of the movable seat 27. The limiting block 210 is slidably engaged in the opening groove in the middle of the staple cartridge 14. The limiting block 210 can be limited by the opening groove, making the movement of the limiting block 210 more stable. This makes the movement process of the movable seat 27, the blade 25 and the translation wedge block 28 more stable, and improves the stability during tissue cutting and anastomosis.

[0042] Please see Figure 4 As shown, in one embodiment, the staple cartridge lifting adjustment unit includes several adjusting bolts 31, all of which are rotatably mounted on the staple cartridge seat 13, and all of the adjusting bolts 31 are threadedly connected to the staple cartridge 14 via external threads. When it is necessary to adjust the height of the staple cartridge 14, rotating the adjusting bolts 31 can drive the staple cartridge 14 to move up and down through the thread transmission of the adjusting bolts 31.

[0043] Please see Figures 4-6As shown, in one embodiment, the firing assembly lifting adjustment unit includes a lifting plate 32, an adjusting plate 33, a connecting plate 34, and a lifting slide 36. Two sets of adjusting plates 33 are provided, each set positioned below the sides of the nail magazine 14, and both sets are fixedly connected to the nail magazine 14 via the connecting plate 34. Each set of adjusting plates 33 has a first guide slope 35 that gradually slopes upwards from left to right at its front end. Two sets of lifting slides 36 are provided, each set positioned on both sides of the movable seat 27. The lifting plate 32 is slidably installed within each set of lifting slides 36. The inner end of the lifting plate 32 is fixedly connected to the translation wedge block 28, and the right side of the lifting plate 32 has a second guide slope 37 that gradually slopes upwards from left to right.

[0044] When the staple cartridge 14 moves up and down, it drives the connecting plate 34 and the adjusting plate 33 to move up and down synchronously. When the moving seat 27 drives the translation wedge block 28 to the bottom end of the staple cartridge 14, the moving seat 27 drives the lifting plate 32 to move to the bottom end of the staple cartridge 14 synchronously. At this time, the second guide slope 37 on the right side of the lifting plate 32 abuts against the first guide slope 35 on the left side of the adjusting plate 33. Then, as the moving seat 27, the translation wedge block 28 and the lifting plate 32 continue to move, the lifting plate 32 continues to move towards the adjusting plate 33. At the same time, the lifting plate 32 is lifted to the top surface of the adjusting plate 33 under the guidance of the first guide slope 35 and the second guide slope 37, thereby increasing the height of the lifting plate 32. As the height of the shifting wedge block 28 increases, through the cooperation of the lifting plate 32 and the adjusting plate 33, when the nail magazine 14 moves upward for adjustment, the shifting wedge block 28 can move upward with the nail magazine 14 to a greater height when firing the titanium nail 114. This ensures that the distance between the shifting wedge block 28 and the lifting wedge block 29 in the nail magazine 14 remains constant during operation, guaranteeing that the shifting wedge block 28 and the lifting wedge block 29 cooperate to fire the titanium nail 114 normally. Conversely, when the nail magazine 14 moves downward for adjustment, the height of the shifting wedge block 28 moving upward with the nail magazine 14 when firing the titanium nail 114 decreases. This ensures that the distance between the shifting wedge block 28 and the lifting wedge block 29 in the nail magazine 14 remains constant during operation, guaranteeing that the shifting wedge block 28 and the lifting wedge block 29 cooperate to fire the titanium nail 114 normally.

[0045] How to use:

[0046] First, place the staple cartridge 14 and the anvil plate 12 above and below the tissue, respectively. Then, close the anvil seat 11 and the staple cartridge seat 13 so that the locking block 15 is engaged in the locking groove 16 and the pin 19 is engaged in the pin groove 111. Then, rotate the rotating handle 17 to press it tightly against the surface of the staple cartridge seat 13. When the rotating handle 17 rotates, it drives the arc-shaped locking plate 112 to rotate and move clockwise. During the rotation and movement, the arc-shaped locking plate 112 abuts against the upper side of the pin 19, thereby locking and fixing the pin 19 in the pin groove 111, completing the two-point connection and fixation between the anvil seat 11 and the staple cartridge seat 13.

[0047] Then, rotating the adjusting bolt 31 drives the staple cartridge 14 to move towards the anvil plate 12 until the staple cartridge 14 engages with the anvil plate 12 to clamp the tissue. Then, the motor 21 drives the lead screw 22 to rotate. As the lead screw 22 rotates, it drives the threaded sleeve 26 to move along the lead screw 22 towards one end of the staple cartridge 14 via threaded transmission. This, in turn, drives the slider 23, push-pull rod 24, and moving seat 27 towards one end of the staple cartridge 14, causing the moving seat 27 to gradually move to the bottom surface of the staple cartridge 14. Simultaneously, it drives the translation wedge block 28 and the lifting plate 32 to move towards the bottom surface of the staple cartridge 14. The bottom end of the staple cartridge 14 is moved, and the blade 25 is moved into the opening slot in the middle of the staple cartridge 14. Then, as the moving seat 27, the translation wedge block 28, the lifting plate 32 and the blade 25 continue to move, the lifting plate 32 is lifted to the top surface of the adjusting plate 33 under the guidance of the first guide slope 35 and the second guide slope 37. At the same time, the lifting plate 32 drives the translation wedge block 28 to move upward synchronously, so that the wedge-shaped slope at the top of the translation wedge block 28 is aligned with the wedge-shaped slope at the bottom of the lifting wedge block 29.

[0048] When the translation wedge block 28 moves past the bottom surface of the lifting wedge block 29, the lifting wedge block 29 is pushed into the staple groove 113 by the wedge-shaped inclined surface. Then, the lifting wedge block 29 pushes out the titanium staple 114 in the staple groove 113. The end of the fired titanium staple 114 passes through the tissue and abuts in the staple groove 115. Under the abutment of the staple groove 115, the end of the titanium staple 114 bends inward, so that the two ends of the titanium staple 114 are closed. Thus, the tissue is anastomosed by the bent and closed titanium staple 114. The blade 25 cuts the tissue during the movement until the translation wedge block 28 and the blade 25 move to the end of the staple cartridge 14. At this time, the blade 25 completely cuts the tissue, and the translation wedge block 28 and the lifting wedge block 29 cooperate to completely fire the titanium staple 114 in the staple cartridge 14. Thus, the tissue cut is completely anastomosed by the titanium staple 114.

[0049] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The preferred embodiments of the invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A linear cutting stapler with precision firing positioning, characterized in that: It includes a stapler main frame (1), a cutting and stapling mechanism (2) and an adjusting mechanism (3). The stapler main frame (1) includes an anvil (11), a cartridge holder (13) and a connecting component. One end of the anvil (11) is fixedly installed with an anvil plate (12). One end of the cartridge holder (13) is installed with a cartridge (14). The anvil (11) and the cartridge holder (13) can be spliced and合拢 and separated and展开 through the connecting component; The cutting and stapling mechanism (2) includes a screw drive component, a firing component and a blade (25). The screw drive component, the firing component and the blade (25) are all installed in the cartridge holder (13). And the firing component and the blade (25) are both arranged on the back of the cartridge (14). At the same time, the blade (25) passes through the cartridge (14) and extends above the cartridge holder (13). The screw drive component is used to drive the firing component and the blade (25) to move linearly along the cartridge (14); The adjusting mechanism (3) includes a cartridge lifting and adjusting unit and a firing component lifting and adjusting unit. The cartridge (14) is installed in the cartridge holder (13) through the cartridge lifting unit. The firing component lifting and adjusting unit is传动安装 between the cartridge (14) and the firing component. When the cartridge lifting and adjusting unit drives the cartridge (14) to move up and down along the cartridge holder (13), the firing component lifting and adjusting unit drives the firing component to move up and down synchronously; An opening groove is provided in the middle of the cartridge (14). A plurality of staple grooves (113) are symmetrically arranged on both sides of the opening groove. Each staple groove (113) is clamped with a titanium staple (114); The screw drive component includes a motor (21) and a screw (22). The motor (21) is fixedly installed in the cartridge holder (13). The screw (22) is rotationally installed in the cartridge holder (13). And the motor (21) is传动连接 with one end of the screw (22). A threaded sleeve (26) is installed on the screw (22) by thread transmission. A slider (23) is fixedly installed on the surface of the threaded sleeve (26); The bottom surface of the slider (23) is slidably installed in the cartridge holder (13). One end of the slider (23) is fixedly installed with a push rod (24) extending to the back of the cartridge (14). The end of the push rod (24) is fixedly installed with a moving seat (27). The firing component and the blade (25) are fixedly installed on the moving seat (27); The firing component includes a translation wedge block (28) and a lifting wedge block (29). There are two groups of translation wedge blocks (28). The two groups of translation wedge blocks (28) are symmetrically inserted at both ends of the moving seat (27). There are a plurality of lifting wedge blocks (29). And the plurality of lifting wedge blocks (29) are respectively inserted into the plurality of staple grooves (113). At the same time, the lifting wedge block (29) abuts against the bottom end of the titanium staple (114); The cartridge lifting and adjusting unit includes a plurality of adjusting bolts (31). The plurality of adjusting bolts (31) are all rotatably installed on the cartridge seat (13), and the plurality of adjusting bolts (31) are all in threaded driving connection with the cartridge (14) through external threads; The firing assembly lifting and adjusting unit includes a lifting plate (32), an adjusting plate (33), a connecting plate (34), and a lifting chute (36). There are two groups of the adjusting plates (33). The two groups of adjusting plates (33) are respectively arranged below both sides of the cartridge (14), and the two groups of adjusting plates (33) are both fixedly connected to the cartridge (14) through the connecting plate (34). The front end of each group of adjusting plates (33) is provided with an inclined first guiding inclined surface (35); There are two groups of the lifting chutes (36). The two groups of lifting chutes (36) are respectively arranged on both sides of the moving seat (27). The lifting plates (32) are all slidably installed in the two groups of lifting chutes (36). The inner end of the lifting plate (32) is fixedly connected to the translation wedge block (28). The lifting plate (32) is provided with an inclined second guiding inclined surface (37).

2. The linear cutting stapler with precise firing positioning according to claim 1, characterized in that: The connecting component includes a clamping block (15), a clamping groove (16), a rotating handle (17), an upper connecting plate (18), and a lower connecting plate (110). The clamping block (15) is fixedly installed at one end of the bottom surface of the anvil seat (11). The clamping groove (16) is fixedly installed at one end of the top surface of the cartridge seat (13); The upper connecting plate (18) is fixedly installed on the bottom surface of the anvil seat (11). A pin shaft (19) is fixedly installed on the upper connecting plate (18). The lower connecting plate (110) is fixedly installed on the bottom surface of the cartridge seat (13). The lower connecting plate (110) is provided with a pin slot (111) with an upward opening; The rotating handle (17) is arranged on the bottom surface of the cartridge seat (13), and one end of the rotating handle (17) is rotatably connected to the cartridge seat (13) through a hinge shaft (116). An arc-shaped clamping plate (112) is fixedly installed on the inner side surface of the rotating handle (17).

3. The linear cutting stapler for precise firing and positioning according to claim 2, characterized in that: The bottom surface of the anvil plate (12) is provided with a plurality of anvil grooves (115) corresponding to the nail grooves (113) one by one.

4. The linear cutting stapler for precise firing and positioning according to claim 3, characterized in that: A limiting block (210) is fixedly installed in the middle of the top surface of the moving seat (27). The limiting block (210) is slidably clamped in the opening groove in the middle of the cartridge (14).

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