Mistaken cutting prevention type anastomat structure and mis-cutting prevention anastomat

Abstract

The utility model relates to the technical field of medical instruments and anastomats, in particular to a mis-cutting prevention type anastomat structure and a mis-cutting prevention anastomat. The utility model relates to a mis-cutting prevention type anastomat structure, which comprises a nail bin seat, a nail storage bin and a driving device, the top of the cutting knife is arranged in the staple loading bin and is provided with a safety check block; one end of the nail abutting seat is hinged to the nail bin seat, and the nail abutting seat is provided with a knife guide rail inserted from the bottom of the cutting knife and a safety position inserted by the safety check block; one end of the safety elastic sheet is provided with a pressing part adjacent to the safety stop block, and the other end of the safety elastic sheet is mounted in the staple loading bin and is provided with a pressed part; the opening and closing driving mechanism is used for pushing the nail bin seat and the nail abutting seat to be closed. Furthermore, the phenomenon of mistaken cutting is effectively avoided, and it is guaranteed that after cutting, the nail bin assembly in the nail bin base sutures the cut tissue through the suturing nails.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices and staplers, and in particular to an anti-miscutting stapler structure and an anti-miscutting stapler. Background Art

[0002] A stapler is a medical device used to connect or close tissues, such as the intestines, blood vessels, or skin, during surgery. Its primary function is to ensure that surgical incisions or tissue edges are precisely and evenly aligned and secured to promote healing. Staplers can be mechanical or electric and are categorized into several types based on their design and function: linear staplers, circular staplers, skin staplers, and endoscopic staplers (also known as laparoscopic staplers).

[0003] However, existing staplers, for example, Chinese invention patent publication number CN101966093A (hereinafter referred to as Document 1), discloses a laparoscopic surgical cutting stapler with a replaceable stapler. This prior art stapler cannot identify whether a stapler assembly has been installed on the stapler seat, nor can it identify whether the staple push slider is in the initial position of the stapler assembly, and thus cannot know whether the stapler assembly has been used. Therefore, during a cutting and suturing operation, if the stapler seat has not been installed with the stapler assembly, or the stapler assembly has been used, it is easy to cause miscutting, that is, a situation where suturing cannot be performed after cutting, which will cause severe bleeding and pose a great safety hazard. Utility Model Content

[0004] The purpose of the present invention is to provide an anti-miscutting stapler structure and an anti-miscutting stapler to address the deficiencies of the existing technology, aiming to avoid miscutting and ensure that after cutting, the stapler assembly in the stapler seat has staples for suturing.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A miscutting-proof stapler structure, comprising:

[0006] A nail magazine seat is provided with a nail magazine;

[0007] The cutting knife has its top placed in the stapling chamber and is equipped with a safety block;

[0008] The nail anvil has one end hinged to the nail magazine seat and is provided with a knife guide rail inserted by the bottom of the cutting knife and a safety position inserted by the safety block;

[0009] A safety spring piece, one end of which is provided with a pressing portion adjacent to the safety block, and the other end of which is installed in the staple cartridge and provided with a receiving portion lifted up by the staple pushing slider of the staple cartridge assembly; and

[0010] The opening and closing drive mechanism is used to push the nail magazine seat and the nail support seat to close.

[0011] As a further solution of the present invention: the anti-miscutting type anastomosis device structure further includes:

[0012] a firing member connected to the cutting knife; and

[0013] The nail magazine assembly is installed in the nail magazine and has a nail pushing slider that abuts against the end of the cutting knife away from the firing member and abuts against the abutted portion;

[0014] Among them, the pressing part is used to push the safety block into the safety position when the nail magazine seat and the nail anvil seat are closed and the supported part is not lifted by the nail pushing slider; the supported part is used to separate the pressing part and the safety block when the nail magazine seat and the nail anvil seat are closed, so as to avoid the safety block being pushed into the safety position.

[0015] As a further solution of the present invention: the abutted portion is a spring protrusion protruding toward the direction of the nail-pushing slider;

[0016] The nail magazine assembly is also provided with a buckled shield, which is provided with a third avoidance notch that enables the spring protrusion to abut against the top of the nail-pushing slider.

[0017] As a further solution of the present invention: a safety stop wall for resisting a safety stop block is provided on one side of the safety position close to the advancing direction of the cutting knife.

[0018] As a further solution of the present invention: a guide block rail into which the safety block is inserted is recessed on the side wall of the guide knife rail.

[0019] As a further solution of the present invention: a first connecting end is provided at one end of the nail magazine seat, and the first connecting end is provided with a hinged portion;

[0020] The anvil is provided with a second connecting end, and the second connecting end is provided with a travel guide position inserted by the hinge part;

[0021] The opening and closing drive mechanism is used to push the nail anvil to drive the hinge part to move along the travel guide position, so that the nail magazine seat moves toward the nail anvil until the nail magazine seat and the nail anvil are closed.

[0022] As a further solution of the present invention, the opening and closing drive mechanism is provided with a connecting sleeve which is sleeved on the first connecting end and the second connecting end.

[0023] As a further solution of the present invention: an anti-miscutting stapler includes the anti-miscutting stapler structure as described in any one of the above.

[0024] As a further solution of the present invention: the anti-miscutting anastomosis device further includes:

[0025] The device body, the opening and closing driving mechanism is installed on the device body;

[0026] A firing mechanism, mounted on the body of the device, is used to push the firing member, causing the firing member to push the cutting blade to move; and

[0027] The barrel sleeve has one end connected to the gun body and the other end connected to the end of the connecting sleeve away from the nail magazine seat;

[0028] The mounting seat is connected to the second connecting end, and the firing member passes through the mounting seat.

[0029] As a further solution of the present invention: the anti-miscutting stapler also includes a steering assembly installed on the mounting seat.

[0030] Beneficial effects of the present invention:

[0031] In this solution, a safety spring is provided, and when the nail magazine seat and the nail anvil seat are unfolded, the pressing portion of the safety spring is adjacent to the top of the safety block;

[0032] When the nail magazine seat is not loaded with a nail magazine assembly, or the loaded nail magazine assembly is not in the initial position due to the nail pushing slider, when the nail magazine seat and the nail anvil seat are closed, the abutted portion of the safety spring piece will not contact the nail pushing slider, and the safety spring piece will not be lifted up by the nail pushing slider. The pressing portion of the safety spring piece will push the safety block into the safety position, so that when the triggering member is activated to push the cutting knife, the cutting knife will be blocked by the safety stop wall on the safety position to prevent the cutting knife from being pushed forward and causing accidental cutting;

[0033] When the staple cartridge seat is equipped with a staple cartridge assembly, and the staple cartridge assembly is brand new and has not been used, the staple pusher slider is in the initial position of the staple cartridge assembly, and the staple cartridge assembly contains staples. When the staple cartridge assembly is loaded into the staple cartridge, the top of the staple pusher slider on the staple cartridge assembly abuts against the abutted portion of the safety spring sheet, causing the safety spring sheet to be lifted a certain distance, thereby causing the pressing portion of the safety spring sheet to be further lifted a certain distance away from the safety block on the cutting knife. When the staple cartridge seat and the staple anvil seat are closed, the pressing portion cannot abut against the safety block and presses it down to the safety position. At this time, the firing member is activated to push the cutting knife, and the cutting knife is not blocked by the safety stop wall on the safety position, so that the cutting knife can be pushed normally to perform the cutting action, and the cutting knife simultaneously pushes the staple pusher slider to move, causing the staple pusher slider to press out staples to suture the cut tissue. Thus, the phenomenon of miscutting is effectively avoided, and it is ensured that after cutting, the staple cartridge assembly in the staple cartridge seat contains staples to suture the cut tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Schematic diagrams of the structures of the high-safety stapler and / or the anti-miscutting stapler of the present invention at different viewing angles.

[0035] Figure 2 It is a structural schematic diagram of the nail anvil and the nail magazine seat of the present invention when they are in the expanded state.

[0036] Figure 3 It is a structural schematic diagram of the nail anvil and the nail magazine seat of the present invention in a closed state.

[0037] Figure 4 This is a schematic diagram of the structural decomposition of the present invention.

[0038] Figure 5 It is a schematic diagram of the planar structure decomposition of the nail anvil and the nail magazine seat of the present invention in the unfolded state.

[0039] Figure 6 It is a schematic diagram of the cross-sectional structure decomposition of the nail anvil and the nail magazine seat of the present invention in a closed state, wherein the nail magazine seat is not installed with a nail magazine assembly.

[0040] Figure 7 For Figure 6 Based on the above, a schematic diagram of the cross-sectional structure after the nail magazine assembly is installed on the nail magazine seat is shown.

[0041] Figure 8 This is another structural cross-sectional schematic diagram of the nail anvil and the nail magazine seat of the present invention in the expanded state.

[0042] Figure 9 It is a schematic diagram of the structural decomposition of the nail support and the nail magazine seat of the present invention in the unfolded state.

[0043] Figure 10 This is a schematic diagram of the structural decomposition between the nail magazine assembly and the cutting knife of the present invention, wherein B is a schematic diagram of the structure after the nail pushing slider at A is further decomposed from the nail magazine assembly.

[0044] Figure 11 This is another schematic diagram of the cross-sectional structure of the nail anvil and the nail magazine seat in the closed state of the present invention.

[0045] Figure 12 This is another structural decomposition diagram of the present invention.

[0046] Figure 13 This is a schematic diagram of the cross-sectional structure of the nail support described in the present invention.

[0047] Figure 14 This is a schematic diagram of the cross-sectional structure of the nail magazine seat of the present invention.

[0048] Figure 15 This is a schematic plan view of the cross-sectional structure of the nail holder described in the present invention, a is when the cutting knife is not installed, b is when the safety block of the cutting knife is in the safety position and is blocked by the safety block wall, and c is when the safety block of the cutting knife is away from the safety position and will not be blocked by the safety block wall.

[0049] Figure 16It is a structural schematic diagram of the safety spring of the present invention.

[0050] Figure 17 It is a structural schematic diagram of the connecting sleeve of the present invention.

[0051] Figure 18 Schematic diagram of the exploded and partially enlarged connection structure between the firing member and the firing rod of the present invention.

[0052] Figure 19 It is a partially enlarged schematic diagram of the connection structure between the firing member and the firing rod of the present invention, wherein C shows the state where the firing member is tilted by being pressed down by the cutting knife, and D shows the state where the firing member and the cutting knife are returning to the original position. DETAILED DESCRIPTION

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It will be understood that the drawings are only provided for reference and illustration purposes and are not intended to limit the present invention. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0054] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0055] like Figures 1 to 17 As shown, in an embodiment of the present invention, a stapler closing structure is provided, comprising: an anvil 1 and a staple cartridge 2.

[0056] The anvil 1 has a travel guide 11 at one end;

[0057] The nail magazine seat 2 has a hinge portion 215 at one end that is inserted into the travel guide position 11;

[0058] The opening and closing drive mechanism includes a pusher 41 for pushing the anvil 1, thereby driving the hinged portion 215 along the travel guide 11, causing the magazine seat 2 to move toward the anvil 1 until the magazine seat 2 and the anvil 1 are closed. Specifically, the travel guide 11 can be a travel guide hole, a travel guide groove, or a travel guide rail. The pusher 41 is driven by the opening and closing drive mechanism, enabling it to push the anvil 1. Specifically, the pusher 41 is pushed by the barrel sleeve 100a, thereby pushing the pusher 41, which in turn pushes the anvil 1.

[0059] The stapler closing structure of this solution is provided with a travel guide position 11 at one end of the anvil 1 and a hinged portion 215 at one end of the stapler seat 2 to be inserted into the travel guide position 11. The hinged portion 215 can also move in the travel guide position 11. When the opening and closing drive mechanism is activated and the pusher 41 is moved, the pusher 41 will push the stapler seat 2 to move, and the hinged portion 215 will move synchronously with the stapler seat 2. The hinged portion 215 is guided along the travel guide position 11. Due to the restriction of the hinged portion 215 in the travel guide position 11, the stapler seat 2 will gradually move toward the anvil 1 when it moves, until the stapler seat 2 and the anvil 1 are closed. This ensures that when the stapler is performing the closing action, the anvil 1 does not move, and the stapler seat 2 moves toward the anvil 1 until the stapler seat 2 and the anvil 1 are closed. This makes the stapler more suitable for anastomosis of vascular procedures.

[0060] In detail, after repeated research and investigation, the inventors found that when the existing stapler, specifically the laparoscopic stapler, is closed or anastomosed, the staple magazine seat 2 is stationary while the anvil 1 is moving, that is, the anvil 1 moves in the direction close to the staple magazine seat 2 until the anvil 1 and the staple magazine seat 2 are closed. However, when doctors are performing vascular procedures, because the anvil 1 is thinner than the staple magazine seat 2, the doctors generally use the anvil 1 to pass through the blood vessel before performing the closing action, thereby cutting and anastomosing the blood vessel. Among them, after the anvil 1 passes through the blood vessel, the doctor also needs to slightly lift the anvil 1 to slightly tighten the blood vessel, which is conducive to cutting and anastomosing the blood vessel. However, when performing the anastomosis or closing action, since it is the anvil 1 that moves and moves towards the staple magazine seat 2 to close, the movement of the anvil 1 at this time is bound to tear the blood vessel, and there is a risk of damaging the blood vessel.

[0061] The key to the stapler's closure structure is that, during the closing action, the anvil 1 remains stationary, while the stapler holder 2 moves and moves toward the anvil 1 until the closure is complete. This allows the anvil 1 to be inserted through the blood vessel and slightly tensioned without tearing the vessel during closure, making the stapler more suitable for vascular anastomosis.

[0062] In one embodiment, the stapler closing structure further includes: a firing member 42, a cutting knife 5 and a staple cartridge assembly 3.

[0063] The cutting knife 5 is connected to the firing member 42;

[0064] The nail magazine assembly 3 is mounted on the nail anvil 1 and has a nail pushing slider 31 that abuts against the end of the cutting blade 5 away from the firing member 42;

[0065] The nail magazine seat 2 is provided with a nail magazine 22, and the nail support seat 1 is provided with a guide rail 13 inserted from the bottom of the cutting knife 5. The nail magazine assembly 3 is installed in the nail magazine 22, and the nail pushing slider 31 abuts against the end of the cutting knife 5 away from the firing member 42.

[0066] In another embodiment, the travel guide position 11 is a travel guide groove, and the travel guide position 11 includes a closing position 111 and a separation position 112;

[0067] When the hinge portion 215 is in the closed position 111, the anvil 1 and the cartridge seat 2 are closed;

[0068] When the hinge portion 215 is located at the separation position 112 , the anvil 1 and the magazine seat 2 are unfolded at the maximum angle.

[0069] In another embodiment, a first connecting end 21 is provided at one end of the nail magazine seat 2, a hinge portion 215 is provided on the first connecting end 21, a first limiting protrusion 211 and a first avoiding notch 212 are provided on a side wall of the first connecting end 21 away from the nail anvil 1, a first abutting wall 213 abutted by the pushing member 41 is provided on the side of the first connecting end 21 away from the first limiting protrusion 211, and the first connecting end 21 is further provided with a first avoiding slot 214 through which the firing member 42 passes;

[0070] The anvil 1 is provided with a second connecting end 12 , the travel guide portion 11 is provided on the second connecting end 12 , and the second connecting end 12 is provided with a second abutting wall 121 abutted by the pusher 41 ;

[0071] The pusher 41 is a connecting sleeve 411 that is sleeved on the first connecting end 21 and the second connecting end 12. The pusher 41 is provided with a relief opening 411a opposite to the first limiting protrusion 211 and a second limiting protrusion 411b opposite to the first avoiding notch 212. The second limiting protrusion 411b makes the relief opening 411a form a concave structure.

[0072] The firing member 42 is provided with a second avoidance notch 421 matching the first connecting end 21;

[0073] The stapler closing structure further comprises a mounting base 6 connected to the second connecting end 12 , so that the anvil 1 is mounted on the mounting base 6 , and the mounting base 6 is provided with a second avoidance slot 61 through which the firing member 42 passes.

[0074] In another embodiment, a first guide wall 14 is provided on both sides of the nail support 1, and a second guide wall 24 is provided on both sides of the nail magazine support 2, which matches and abuts against the first guide wall 14 one by one. The first guide wall 14 and the second guide wall 24 are interference fit. Then, the anastomosis action is performed at this time, which can limit the left and right swing of the nail magazine support 2, thereby improving the nail forming yield and enhancing the stability of the operation.

[0075] In another embodiment, the cutting blade 5 is provided with a safety block 51, and the nail holder 1 is provided with a safety position 15 into which the safety block 51 is placed. A safety block wall 151 for resisting the safety block 51 is provided on the side of the safety position 15 close to the advancing direction of the cutting blade 5. Specifically, the safety block wall 151 is used to resist the safety block 51 located on the safety position 15.

[0076] A guide block rail 131 is recessed on the side wall of the guide rail 13 into which the safety block 51 is inserted;

[0077] A safety spring piece 7 is installed in the stapling chamber 22. One end of the safety spring piece 7 is provided with a pressing portion 71. The safety block 51 is pressed down by the pressing portion 71 until it is placed in the safety position 15. The other end of the safety spring piece 7 is provided with a receiving portion 72. The receiving portion 72 is lifted by the nail pushing slider 31 to separate the pressing portion 71 from the safety block 51. Specifically, Figure 14 As shown, the other end of the safety spring 7 (ie, the end close to the abutting portion 72) is welded to the spring installation position 23 on the top wall of the binding bin 22. The safety position 15 is a safety opening. Figure 6 As shown, when the nail magazine assembly 3 is not installed in the nail magazine seat 2, the safety spring 7 is in a downwardly pressed state. Figure 7 、 Figure 8 and Figure 11 As shown, when a new nail magazine assembly 3 is loaded, the nail pushing slider 31 pushes the safety spring 7 upward, and the safety spring 7 maintains a distance from the safety stop 51 of the cutting knife 5, so that the cutting knife 5 can still move horizontally and perform the cutting action normally after the nail magazine seat 2 and the nail anvil 1 are closed. When the nail pushing slider 31 is pushed forward by the cutting knife 5, the safety spring 7 loses the squeezing force of the nail pushing slider 31 and immediately returns to its original position and presses down.

[0078] The cutting knife 5 includes: a connecting portion 52 for connecting with the firing member 42; an abutting portion 53 for abutting with the nail-pushing slider 31; a cutting portion for cutting human tissue; and a safety block 51, which is pressed down by the abutting portion 71 of the safety spring 7, causing the cutting knife 5 to descend together until the safety block 51 is located in the safety position 15, so that the cutting knife 5 is pushed so that the safety block 51 can be blocked by the safety block wall 151 on the safety position 15 to avoid accidental cutting.

[0079] In another embodiment, the abutting portion 72 is a spring protrusion 721 protruding toward the nail pushing slider 31; the nail magazine assembly 3 is also provided with a buckle shield 32, and the buckle shield 32 is provided with a third avoidance notch 321 that enables the spring protrusion 721 to abut against the top of the nail pushing slider 31.

[0080] In another embodiment, the travel guide portion 11 is disposed at one end of the nail magazine seat 2 , and the hinge portion 215 is disposed at one end of the nail anvil 1 .

[0081] A high-safety stapler comprises a stapler body 100, a firing mechanism mounted on the stapler body 100, and a stapler closing structure as described in any one of the above.

[0082] The opening and closing drive mechanism is mounted on the stapler body 100 and further includes a barrel sleeve 100a connected to the stapler body 100. The end of the pusher 41 away from the anvil 1 is connected to the end of the barrel sleeve 100a away from the stapler body 100. The firing mechanism includes a firing member 42, the end of which away from the staple cartridge seat 2 is inserted into the barrel sleeve 100a, and the firing mechanism is used to drive the firing member 42 to move. Specifically, the stapler further includes a steering assembly 100b mounted on the mounting seat 6, and the steering piece of the steering assembly 100b connects the pusher 41 to the barrel sleeve 100a.

[0083] A high-safety closure method for anastomosis includes the following steps:

[0084] Presetting step: The magazine seat 2 and the anvil 1 are unfolded, the hinge portion 215 of the magazine seat 2 is located at the separation position 112 of the travel guide position 11 of the anvil 1, and the pressing portion 71 of the safety spring 7 is adjacent to the top of the safety block 51 of the cutting blade 5;

[0085] It should be noted that when the anvil 1 is not loaded with the nail magazine assembly 3, when the anvil 1 and the nail magazine seat 2 are unfolded, the pressing portion 71 of the safety spring 7 is adjacent to the top of the safety block 51 of the cutting knife 5. At this time, the pressing portion 71 will not press the safety block 51 into the safety position 15. Only when the anvil 1 and the nail magazine seat 2 are closed, the pressing portion 71 will press the safety block 51 into the safety position 15 to achieve the safety effect. Figure 18 and Figure 19One end of the firing member 42 is fixedly connected to the cutting knife 5, and the other end of the firing member 42 is provided with an inserting protrusion 421, which is inserted into the socket 431 on the firing rod 43. Figure 19 At C, when the cutting blade 5 is pressed down, the end of the firing member 42 connected to the cutting blade 5 will tilt slightly downward, and the end of the firing member 42 away from the cutting blade 5 will tilt slightly. Figure 19 At D, when the safety spring 7 rises, the trigger 42 can be reset and drive the cutting knife 5 back to its original position, thereby moving the safety block 51 out of the safety position 1. Optionally, the trigger 42 can be made of multiple steel sheets made of 301 steel material stacked together. In addition, an elastic member with a smaller elastic force than the safety spring 7 can be provided to act on the cutting knife 5 or the tail of the trigger 42 (i.e., the end of the trigger 42 away from the cutting knife 5) to achieve the return of the cutting knife 5;

[0086] The nailing step: the nail magazine assembly 3 is installed in the nail magazine 22 of the nail magazine seat 2. If the nail magazine seat 2 is installed with the nail magazine assembly 3 and the nail pushing slider 31 is in the initial position of the nail magazine assembly 3, the nail pushing slider 31 abuts against the spring protrusion 721 of the safety spring plate 7 and pushes up the safety spring plate 7 for a certain distance, so that the pressing portion 71 is lifted a certain distance in the direction away from the safety stopper 51. If the nail magazine seat 2 is not installed with the nail magazine assembly 3 or the nail magazine seat 2 is installed with the nail magazine assembly 3 but the nail pushing slider 31 is not in the initial position of the nail magazine assembly 3 (that is, the nail magazine assembly 3 has been used and there are no nails), or the nail magazine assembly 3 is not installed in place, the nail pushing slider 31 cannot push up the safety spring plate 7.

[0087] Closing step: The opening and closing drive mechanism drives the barrel sleeve 100a to push the pusher 41 to move. The pusher 41 abuts against the first abutting wall 213 to push the magazine seat 2 to move. The hinge portion 215 moves along the travel guide position 11, causing the magazine seat 2 to gradually move toward the anvil 1 during the movement until it closes with the anvil 1. At this time, the hinge portion 215 is located at the closed position 111 of the travel guide position 11.

[0088] Safety pre-step: When the nail anvil 1 and the nail magazine seat 2 are closed, if the nail magazine seat 2 is installed with the nail magazine assembly 3 and the nail pushing slider 31 is in the initial position of the nail magazine assembly 3, the safety spring piece 7 is lifted up by the nail pushing slider 31, and the pressing portion 71 of the safety spring piece 7 is separated from the safety stopper 51, and the safety stopper 51 is located outside the safety position 15; if the nail magazine seat 2 is not installed with the nail magazine assembly 3 or the nail magazine seat 2 is installed with the nail magazine assembly 3 but the nail pushing slider 31 is not in the initial position of the nail magazine assembly 3 (that is, it means that the nail magazine assembly 3 has been used and there are no nails) or the nail magazine assembly 3 is not installed in place, the safety spring piece 7 will not be lifted up by the nail pushing slider 31, and the safety stopper 51 is pressed down by the pressing portion 71 of the safety spring piece 7 and placed in the safety position 15;

[0089] Stapling step: the firing mechanism drives the firing member 42 to move, so that the firing member 42 abuts against the cutting knife 5; if the nail magazine seat 2 is installed with the nail magazine assembly 3 and the nail pushing slide 31 is in the initial position of the nail magazine assembly 3, the safety block 51 is located outside the safety position 15, the cutting knife 5 is pushed by the firing member 42 and moves along the guide rail 13, the safety block 51 is inserted into the guide rail 131 and moves synchronously with the cutting knife 5, and the nail pushing slide 31 is pushed by the cutting knife 5 to perform the stapling step; if the nail magazine seat 2 is not installed with the nail magazine assembly 3, the nail pushing slide 31 is located outside the safety position 15, and the cutting knife 5 is pushed by the firing member 42 and moves along the guide rail 13. If the cartridge assembly 3 or the cartridge seat 2 is installed with the cartridge assembly 3 but the nail-pushing slider 31 is not in the initial position of the cartridge assembly 3 (i.e., the cartridge assembly 3 has been used and no nails are left), or the cartridge assembly 3 is not properly installed, the safety block 51 is located in the safety position 15, the cutting blade 5 is pushed by the firing member 42, and the safety stop wall 151 of the safety position 15 resists the safety block 51 to stop the movement of the cutting blade 5, thereby preventing the cutting blade 5 from continuing to move forward when no nails are left and causing accidental cutting of human tissue. Specifically, it can also be used to determine whether the cartridge assembly 3 is properly installed. Double safety is achieved. Specifically, the nail anvil 1 does not move when closing, and the nail magazine seat 2 moves toward the nail anvil 1 to close, which effectively avoids the nail anvil 1 from tearing the human blood vessels, thereby achieving the first level of safety; the cutting knife 5 is pressed down by the safety spring piece 7, so that the safety block 51 of the cutting knife 5 is located in the safety position 15, and the safety block wall 151 is used to block the safety block 51 to block the cutting knife 5, thereby preventing the cutting knife 5 from causing accidental cutting when there is no seamless nail, thereby achieving the second level of safety.

[0090] A stapler structure that prevents accidental cutting includes: a staple cartridge seat 2, a cutting knife 5, a staple anvil 1, a safety spring 7, and an opening and closing drive mechanism.

[0091] The nail magazine seat 2 is provided with a nail magazine 22;

[0092] The cutting blade 5 is placed in the stapling chamber 22 at its top and is provided with a safety block 51;

[0093] The nail anvil 1 is hinged at one end to the nail magazine seat 2 and is provided with a guide rail 13 inserted by the bottom of the cutting knife 5 and a safety position 15 placed by the safety block 51;

[0094] The safety spring piece 7 has a pressing portion 71 at one end adjacent to the safety stopper 51 and a receiving portion 72 at the other end mounted in the staple cartridge 22 and supported by the staple pusher slide 31 of the staple cartridge assembly 3;

[0095] The opening and closing driving mechanism is used to push the nail magazine seat 2 and the nail anvil seat 1 to close. Specifically, the safety position 15 is a safety opening.

[0096] The anti-miscutting stapler structure of this solution is provided with a safety spring piece 7, and when the staple cartridge seat 2 and the anvil seat 1 are unfolded, the pressing portion 71 of the safety spring piece 7 is adjacent to the top of the safety stop block 51;

[0097] When the nail magazine seat 2 is not loaded with the nail magazine assembly 3, or the loaded nail magazine assembly 3 has been used and the nail pushing slider 31 is not in the initial position of the nail magazine assembly 3, when the nail magazine seat 2 and the nail anvil seat 1 are closed, the abutting portion 72 of the safety spring piece 7 will not contact the nail pushing slider 31, and the safety spring piece 7 is not pushed up by the nail pushing slider 31. The pressing portion 71 of the safety spring piece 7 will push the safety block 51 into the safety position 15, so that when the triggering member 42 is activated to push the cutting knife 5, the cutting knife 5 will be blocked by the safety stop wall 151 on the safety position 15 to prevent the cutting knife 5 from being pushed forward and causing accidental cutting.

[0098] When the nail magazine seat 2 is equipped with a nail magazine assembly 3, and the nail magazine assembly 3 is brand new and has not been used, there will be a nail pushing slider 31 in the initial position of the nail magazine assembly 3. When the nail magazine assembly 3 is loaded into the nail magazine 22, the top of the nail pushing slider 31 on the nail magazine assembly 3 will abut against the abutting portion 72 of the safety spring piece 7, so that the safety spring piece 7 is pushed up a certain distance, and then the pressing portion 71 of the safety spring piece 7 will be further lifted a certain distance to move away from the safety stop 51 on the cutting knife 5; when the nail magazine seat 2 and the nail anvil 1 are closed, the pressing portion 71 cannot abut against the safety stop 51 and presses it down to the safety position 15. At this time, the firing member 42 is started to push the cutting knife 5, and the cutting knife 5 will not be abutted by the safety stop wall 151 on the safety position 15, so that the cutting knife 5 can be pushed normally to perform the cutting action, and the cutting knife 5 simultaneously pushes the nail pushing slider 31 to move, so that the nail pushing slider 31 presses out the staples to suture the cut tissue. By utilizing the design concept that the cutting knife 5 can only be pushed when the safety spring piece 7 is lifted by the nail pushing slider 31, it is known whether the nail magazine seat 2 is loaded with the nail magazine assembly 3, or whether the nail pushing slider 31 is in the initial position of the nail magazine assembly 3. If the nail magazine assembly 3 is loaded but the cutting knife 5 cannot be pushed, it can be realized that the nail pushing slider 31 is not in the initial position of the nail magazine assembly 3, and it can be determined whether the nail magazine assembly 3 has been used. If it has been used, it is known that the nail magazine assembly 3 has no staples. In addition, it is effectively avoided to cause the accidental cutting phenomenon, and it is ensured that after cutting, the nail magazine assembly 3 in the nail magazine seat 2 has staples to sew the cut tissue.

[0099] In one embodiment, the anti-miscutting stapler structure further includes: a firing member 42 and a staple cartridge assembly 3.

[0100] The firing member 42 is connected to the cutting knife 5;

[0101] The staple cartridge assembly 3 is installed in the staple cartridge 22 and comprises a staple pusher slider 31 which abuts against the end of the cutting blade 5 away from the firing member 42 and abuts against the abutting portion 72;

[0102] The pressing portion 71 is used to push the safety block 51 into the safety position 15 when the magazine seat 2 and the anvil seat 1 are closed and the abutting portion 72 is not lifted by the nail-pushing slider 31. The abutting portion 72 is used to separate the pressing portion 71 from the safety block 51 when the magazine seat 2 and the anvil seat 1 are closed, thereby preventing the safety block 51 from being pushed into the safety position 15. The abutting portion 72 is a spring protrusion 721 that protrudes toward the nail-pushing slider 31. The magazine assembly 3 also has a snap-fitting shield 32 with a third relief notch 321 that allows the spring protrusion 721 to abut against the top of the nail-pushing slider 31. A safety stop wall 151 is provided on the side of the safety position 15 that is adjacent to the direction of advancement of the cutting blade 5, for abutting the safety block 51. The sidewalls of the guide rail 13 are recessed with a guide block rail 131 into which the safety block 51 is inserted.

[0103] An anti-miscutting stapler comprises the anti-miscutting stapler structure as described in any one of the above.

[0104] The anti-accidental cutting anastomosis device further comprises: a body 100, a firing mechanism, a barrel sleeve 100a and a mounting seat 6.

[0105] The device body 100, the opening and closing driving mechanism is installed on the device body 100;

[0106] The firing mechanism is mounted on the body 100 and is used to push the firing member 42 so that the firing member 42 pushes the cutting blade 5 to move;

[0107] The barrel sleeve 100a is connected to the gun body 100 at one end and to the end of the connecting sleeve 411 away from the nail magazine seat 2 at the other end;

[0108] The mounting seat 6 is connected to the second connecting end 12 , and the firing member 42 passes through the mounting seat 6 .

[0109] In the description and claims of this application, the words "include / comprise" and the words "have / include" and their variations are used to specify the existence of stated features, values, steps or components, but do not exclude the existence or addition of one or more other features, values, steps, components or their combinations.

[0110] Some features of the present invention are described in separate embodiments for clarity of explanation, however, these features may also be described in combination in a single embodiment. Conversely, some features of the present invention are described in a single embodiment for brevity, however, these features may also be described in different embodiments individually or in any suitable combination.

[0111] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-miscutting stapler structure, characterized in that: include: A nail magazine seat (2) is provided with a nail magazine (22); A cutting knife (5), the top of which is placed in the stapling chamber (22) and provided with a safety block (51); A nail support seat (1) is hinged at one end to the nail magazine seat (2), and is provided with a knife guide rail (13) inserted by the bottom of the cutting knife (5) and a safety position (15) inserted by the safety block (51); A safety spring (7), one end of which is provided with a pressing portion (71) adjacent to the safety stopper (51), and the other end of which is installed in the stapling bin (22) and is provided with a receiving portion (72); and The opening and closing drive mechanism is used to push the nail magazine seat (2) and the nail anvil seat (1) to close.

2. The anti-miscutting stapler structure according to claim 1, characterized in that: The anti-miscutting type anastomosis device structure also includes: A firing member (42) connected to the cutting knife (5); and A nail magazine assembly (3) is installed in the nail magazine (22) and has a nail pushing slider (31) that abuts against one end of the cutting knife (5) away from the firing member (42) and abuts against the abutting portion (72); The pressing portion (71) is used to push the safety block (51) into the safety position (15) when the nail magazine seat (2) and the nail support seat (1) are closed and the receiving portion (72) is not lifted by the nail pushing slider (31); and the receiving portion (72) is used to separate the pressing portion (71) from the safety block (51) when the nail magazine seat (2) and the nail support seat (1) are closed and the receiving portion (72) is lifted by the nail pushing slider (31).

3. The anti-miscutting stapler structure according to claim 2, characterized in that: The abutting portion (72) is a spring protrusion (721) protruding toward the nail-pushing slider (31); The nail magazine assembly (3) is further provided with a buckled shield (32), and the buckled shield (32) is provided with a third avoidance notch (321) that enables the spring protrusion (721) to abut against the top of the nail-pushing slider (31).

4. The anti-miscutting stapler structure according to claim 1, characterized in that: The safety position (15) is provided with a safety retaining wall (151) for resisting against the safety stopper (51).

5. The anti-miscutting stapler structure according to claim 1, characterized in that: A guide block rail (131) into which the safety block (51) is inserted is recessed on the side wall of the guide knife rail (13).

6. The anti-miscutting stapler structure according to claim 2, characterized in that: One end of the nail magazine seat (2) is provided with a first connecting end (21), and the first connecting end (21) is provided with a hinge portion (215); The anvil (1) is provided with a second connecting end (12), and the second connecting end (12) is provided with a travel guide position (11) inserted by the hinge portion (215); The opening and closing drive mechanism is used to push the anvil seat (1) to drive the hinge portion (215) to move along the travel guide position (11), so that the nail magazine seat (2) moves toward the anvil seat (1) until the nail magazine seat (2) and the anvil seat (1) are closed.

7. The anti-miscutting stapler structure according to claim 6, characterized in that: The opening and closing drive mechanism is provided with a connecting sleeve (411) sleeved on the first connecting end (21) and the second connecting end (12).

8. An anti-miscutting stapler, characterized in that: It comprises the anti-miscutting anastomosis device structure as described in any one of claims 1-7.

9. An anti-miscutting stapler, characterized in that: The anti-accidental-cutting stapler structure according to claim 7 further comprises: A device body (100), an opening and closing drive mechanism being mounted on the device body (100); A firing mechanism, mounted on the body (100), is used to push the firing member (42) to push the cutting knife (5) to move; A barrel sleeve (100a), one end of which is connected to the body (100), and the other end of which is connected to an end of the connecting sleeve (411) away from the nail magazine seat (2); and The mounting seat (6) is connected to the second connecting end (12), and the firing member (42) passes through the mounting seat (6).

10. The anti-miscutting stapler according to claim 9, characterized in that: The anti-miscutting anastomosis device further comprises a steering assembly (100b) mounted on the mounting seat (6).

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