Anastomat eagle beak, inserting and pulling eagle beak type nail bin assembly and eagle beak inserting and pulling type anastomat

Abstract

The utility model relates to the technical field of medical instruments, in particular to an anastomat olecranon, a plug-in olecranon type nail bin assembly of an anastomat and an olecranon plug-in type anastomat. The olecranon of the anastomat comprises an integrally-formed inserting and pulling part and a mouth edge part extending out of the inserting and pulling part at a certain angle, an inserting and pulling cavity with an opening facing the side away from the mouth edge part is formed in the inserting and pulling part, and a clamping opening communicated with the inserting and pulling cavity is formed in the top face of the inserting and pulling part. According to the scheme, the inserting and pulling cavity used for being connected with the mouth installing part on the nail abutting base in an inserted mode is formed in the anastomat olecranon, the clamping opening communicated with the inserting and pulling cavity is formed and used for clamping the clamping protrusion arranged on the nail abutting base, and therefore the inserting and pulling convenience of the anastomat olecranon is effectively improved, the structure is simple, the manufacturing cost is reduced, and the anastomat olecranon is suitable for popularization and application. And the plug is stable and not easy to fall off, so that the market competitiveness of the product is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a stapler hawk, a plug-in hawk-beak type stapler assembly of the stapler and a hawk-beak plug-in type stapler. Background Art

[0002] The hawkbill-style stapler assembly at the front end of the stapler can protect the tissue in the blind area of ​​the operation. After the hawkbill assembly is installed, it can help the instrument to have more advantages when entering a narrow space, especially when entering the back side of the blood vessel. In addition, the hawkbill assembly can better fix the vascular tissue in the jaws. The existing electric staplers are divided into instruments with and without hawkbill. The hawkbill of the stapler with hawkbill is usually installed on the stapler seat of the stapler assembly.

[0003] As disclosed in the Chinese utility model with publication number CN217987640U (hereinafter referred to as Document 1), a detachable olecranon stapler of a laparoscopic stapler has a connecting buckle 4 on the olecranon head 1 that is embedded in the buckle through hole 5 on the upper cover 7 of the nail support, and is snap-connected to the connecting slot 6 on the upper cover 7 of the nail support, which is convenient for snap-fit ​​installation to improve the tightness of the end of the connecting buckle 4.

[0004] However, the solution of Document 1 still has the following shortcomings: the eagle beak head is not easy to disassemble, and the structure is complex and not easy to produce, and the eagle beak head and the nail support body are difficult to manufacture. Utility Model Content

[0005] The purpose of the utility model is to provide a stapler beak, a plug-in beak-type stapler assembly of the stapler and a beak-type plug-in stapler to address the deficiencies in the prior art, aiming to improve the convenience of disassembling and assembling the beak and reduce the difficulty of manufacturing the beak.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a stapler beak, comprising an integrally formed plug-in portion and a mouth edge portion extending from the plug-in portion at a certain angle, the plug-in portion is internally formed with a plug-in cavity open toward a side away from the mouth edge portion, and the top surface of the plug-in portion is provided with a bayonet connected to the plug-in cavity. Specifically, the plug-in cavity can be used to plug in and out the mouth portion installed on the anvil seat; the bayonet is used to clamp the clamping protrusion on the anvil seat.

[0007] As a further solution of the utility model: the inner wall of the plug-in and pull-out cavity is provided with plug-in and pull-out guide ribs.

[0008] As a further solution of the utility model: the bayonet is provided with at least two;

[0009] The plug-in guide rib is arranged on the inner wall of the plug-in cavity and is located between the two bayonet holes.

[0010] As a further solution of the utility model: in the lateral section of the stapler's beak:

[0011] The end of the mouth edge away from the plug-in portion forms an angle λ, and 10°≤λ≤20°;

[0012] The angle between the bottom edge of the plug-in portion and the bottom edge of the mouth edge portion is α, and 120°≤α≤150°;

[0013] The angle between the top edge of the plug-in portion and the top edge of the mouth edge portion is β, and 130°≤β≤170°.

[0014] As a further solution of the utility model: a first pre-tightening surface is arranged on the inner wall of the end of the plug-in cavity away from the opening.

[0015] The utility model also provides another technical solution: a plug-in hawkbill type stapler assembly of a stapler, comprising:

[0016] A beak, wherein the beak is the beak of the stapler as described in any one of the above; and

[0017] A nail anvil, one end of which is provided with a mounting mouth portion matching the plug-in cavity, and the mounting mouth portion is provided with a clamping protrusion matching the bayonet.

[0018] As a further solution of the utility model: the nail support is provided with an insertion and extraction guide rib groove matching the insertion and extraction guide rib.

[0019] As a further solution of the utility model: a plug-in reserved opening is also provided on the nail support, and the plug-in guide groove is provided at the bottom of the plug-in reserved opening.

[0020] As a further solution of the utility model: the nozzle portion is provided with a second pre-tightening surface matching the first pre-tightening surface;

[0021] The card convex is provided with:

[0022] A guiding inclined surface, inclined downwardly toward the second pre-tightening surface;

[0023] A clamping surface, provided on a side of the clamping protrusion away from the second pre-tightening surface; and

[0024] A transition surface, adjacent to the guide inclined surface and / or the holding surface;

[0025] The nozzle is further provided with a third pre-tightening surface obliquely downward toward the clamping convex direction, and a clamping position is formed between the third pre-tightening surface and the clamping surface. The portion of the plug-in portion clamped into the clamping position is recorded as a clamping end, which satisfies the following formula 1 and / or formula 2 or formula 3:

[0026] Formula 1: q≤n≤p;

[0027] In formula 1, n represents the length of the clamping end along the clamping direction, q represents the shortest distance from the clamping surface to the third pre-tightening surface, and p represents the longest distance from the clamping surface to the third pre-tightening surface;

[0028] Formula 2: z+q≤m≤z+p;

[0029] In Formula 2, m represents the longest distance from the opening to the first pre-tightening surface, q represents the shortest distance from the clamping surface to the third pre-tightening surface, p represents the longest distance from the clamping surface to the third pre-tightening surface, and z represents the longest distance from the second pre-tightening surface to the clamping surface;

[0030] Formula 3: n≤q and m≤z+q;

[0031] In formula 3, n represents the length of the clamping end along the clamping direction, m represents the longest distance from the opening to the first preload surface, q represents the shortest distance from the clamping surface to the third preload surface, and z represents the longest distance from the second preload surface to the clamping surface.

[0032] The utility model also provides another technical solution: an eaglebill plug-in type stapler, comprising a plug-in type staple cartridge assembly as described in any one of the above.

[0033] Beneficial effects of the utility model:

[0034] This solution effectively improves the convenience of plugging and unplugging the beak of the stapler by providing an insertion and extraction cavity on the beak of the stapler for interlocking with the mouth portion of the anvil, and providing a latch connected to the insertion and extraction cavity for latching the latch protrusion provided on the anvil. The structure is simple and the manufacturing cost is reduced. The insertion and extraction is stable and not easy to fall off, which effectively improves the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the stapler beak of the utility model.

[0036] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure.

[0037] Figure 3 for Figure 2 Schematic diagram of the structure in a plan view.

[0038] Figure 4 It is a schematic diagram of the structural decomposition of the stapler beak and the anvil in a separated state and a schematic diagram of the partial structure enlargement of the utility model.

[0039] Figure 5 It is a partial structural schematic diagram of the stapler beak of the utility model being installed on the anvil seat.

[0040] Figure 6 It is a partial structural schematic diagram of an embodiment of the utility model in which the stapler beak is installed on the anvil seat from a plane perspective.

[0041] Figure 7 It is a schematic diagram of the partial structure of the stapler beak and the anvil seat in the utility model in a separated state.

[0042] Figure 8 It is a schematic diagram of the local structure and partial cross-sectional structure of the stapler beak and the anvil seat of the utility model in a separated state from a planar perspective.

[0043] Fig. 9 for Figure 8 Schematic diagram of the structure from other perspectives.

[0044] Fig.10 The present invention is a structural schematic diagram and a force application schematic diagram for preparing to pull the stapler beak out of the anvil seat.

[0045] Fig.11 Based on Fig.10 Schematic diagram of the structure after the force of arrows B and C is applied, the stapler beak is bent down and forms a certain inclination angle.

[0046] Reference numerals include:

[0047] 1—Olecranon of the stapler,

[0048] 11 - plug-in part, 12 - mouth edge part,

[0049] 111 - plug-in cavity, 112 - bayonet, 113 - plug-in guide rib, 114 - clamping end,

[0050] 1111—first preload surface;

[0051] 2—Anvil seat,

[0052] 21 - installation mouth, 22 - clamping convexity, 23 - plug-in reserved opening, 24 - plug-in guide groove,

[0053] 211 - second preload surface, 212 - third preload surface, 213 - clamping position,

[0054] 221 - guiding inclined surface, 222 - holding surface, 223 - transition surface. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0056] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot 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, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0057] like Figure 1 to Figure 11 As shown, in an embodiment of the utility model, a stapler beak 1 is provided, comprising an integrally formed plug-in portion 11 and a mouth edge portion 12 extending from the plug-in portion 11 at a certain angle, a plug-in cavity 111 is formed inside the plug-in portion 11 and is open toward a side away from the mouth edge portion 12, and a bayonet 112 connected to the plug-in cavity 111 is provided on the top surface of the plug-in portion 11. Specifically, the plug-in cavity 111 can be used to plug in and out the mouth portion 21 installed on the anvil seat 2; the bayonet 112 is used to hold the clamping protrusion 22 on the anvil seat 2.

[0058] In this solution, a plug-in and pull-out cavity 111 is provided on the stapler beak 1 for interlocking with the mouth portion 21 on the anvil 2, and a latch 112 is provided which is connected to the plug-in and pull-out cavity 111 for latching the latch protrusion 22 provided on the anvil 2, thereby effectively improving the plug-in and pull-out convenience of the stapler beak 1. The present invention also has a simple structure and reduces the manufacturing cost. The plug-in and pull-out is stable and not easy to fall off, thereby effectively improving the market competitiveness of the product.

[0059] In one embodiment, Figure 1~Figure 3 as well as Figure 7~Figure 9As shown, the inner wall of the plug-in and pull-out cavity 111 is provided with plug-in and pull-out guide ribs 113. Specifically, the plug-in and pull-out guide ribs 113 on the stapler beak 1 are inserted into the plug-in and pull-out guide rib grooves 24 on the anvil seat 2, so as to play a guiding role in the plug-in and pull-out process, and to strengthen the firmness of the stapler beak 1 installed on the anvil seat 2. In addition, the design of the plug-in and pull-out guide ribs 113 being aligned and inserted into the plug-in and pull-out guide rib grooves 24 can also effectively prevent the stapler beak 1 from deforming from time to time after being inserted due to bumping into objects, causing the bayonet 112 and the latch protrusion 22 to be misaligned and not fit in place, thereby losing the fixing effect. That is, after the stapler beak 1 is installed on the anvil seat 2, it can resist certain external bumps and is not easy to be misaligned and fall off.

[0060] In another embodiment, Figure 1 to Figure 10 As shown, the bayonet 112 is provided with at least two;

[0061] The plug-in and pull-out guide rib 113 is disposed on the top inner wall of the plug-in and pull-out cavity 111 and is located between the two bayonet holes 112. Specifically, at least two bayonet holes 22 are also provided, and they are matched one-to-one with the two bayonet holes 112, respectively. Thus, the plug-in and pull-out convenience of the stapler beak 1 is further improved, and the firmness of the stapler beak 1 installed on the anvil seat 2 is further enhanced to further resist the bumps caused by the external surgical operation environment.

[0062] In yet another embodiment, Figure 3 As shown, in the lateral section of the stapler beak 1:

[0063] The end of the mouth edge portion 12 away from the plug-in portion 11 forms an angle λ, and 10°≤λ≤20°;

[0064] The angle between the bottom edge of the plug-in portion 11 and the bottom edge of the mouth edge portion 12 is α, and 120°≤α≤150°;

[0065] The angle between the top edge of the plug-in portion 11 and the top edge of the mouth edge portion 12 is β, and 130°≤β≤170°. Preferably, λ=15°, α=135°, β=150°. Furthermore, since the stapler beak 1 needs to be bent and pulled outward when being pulled out (see the description of the plug-in process below for details), selecting a suitable intersection angle makes it easier to apply force during plug-in and pull-out, so as to further improve the convenience of plug-in and pull-out.

[0066] In yet another embodiment, Figure 2 , Figure 3 , Figure 8 and Fig. 9As shown, a first pre-tightening surface 1111 is provided on the inner wall of the end of the insertion and extraction cavity 111 away from the open end. Specifically, the first pre-tightening surface 1111 can be selected as a pre-tightening inclined surface or a pre-tightening arc surface, and the second pre-tightening surface 211 on the mouth portion 21 matches the first pre-tightening surface 1111. Implementation 1: The mouth portion 21 of the stapler beak 1 is inserted into the insertion and extraction cavity 111 of the anvil seat 2 until the protrusion 22 is snapped into the bayonet 112, and the first pre-tightening surface 1111 and the second pre-tightening surface 211 are in a separated state. Implementation 2: The mouth portion 21 of the stapler beak 1 is inserted into the insertion and extraction cavity 111 of the anvil seat 2 until the second pre-tightening surface 211 abuts against the first pre-tightening surface 1111, and at this time the protrusion 22 is just snapped into the bayonet 112. Furthermore, the firmness of the stapler beak 1 installed on the anvil seat 2 is further enhanced, and the convenience of plugging and unplugging the stapler beak 1 is further improved.

[0067] In another embodiment, if Figure 4~Figure 10 As shown, a stapler plug-in hawkbill type staple cartridge assembly comprises: a hawkbill and a staple support 2. Among them:

[0068] An olecranon, wherein the olecranon is the olecranon 1 of any one of the above-mentioned staplers;

[0069] The anvil seat 2 has a mouth portion 21 at one end thereof that matches the insertion and extraction cavity 111, and the mouth portion 21 is provided with a protrusion 22 that matches the bayonet 112. Specifically, the mouth portion 21 can be inserted into the insertion and extraction cavity 111. Thus, the firmness of the stapler beak 1 installed on the anvil seat 2 is further enhanced, and the convenience of inserting and removing the stapler beak 1 is further improved.

[0070] In another embodiment, if Figure 4 and Fig. 9As shown, the anvil 2 is provided with an insertion and extraction guide rib groove 24 matching the insertion and extraction guide rib 113. Specifically, the insertion and extraction guide rib 113 is inserted into the insertion and extraction guide rib groove 24 to guide the insertion and extraction process and to strengthen the firmness of the stapler beak 1 installed on the anvil 2. At least two of the clamping protrusions 22 are also provided, and they are matched with the two clamping ports 112 one by one. The plug-in guide rib groove 24 is arranged between the two clamping protrusions 22, specifically, at the middle position between the two clamping protrusions 22, the plug-in guide rib 113 is arranged at the middle position between the two clamping sockets 112, and the distance from the plug-in guide rib groove 24 to any clamping protrusion 22 is equal to the distance from the plug-in guide rib 113 to any clamping socket 112, so that when the plug-in guide rib 113 is just inserted into the plug-in guide rib groove 24, the clamping protrusion 22 can be just aligned with the clamping socket 112 along the length direction of the plug-in guide rib 113, and then when continuing to insert and push inward, the clamping protrusion 22 can be accurately inserted into the clamping socket 112, effectively avoiding the offset and misalignment between the clamping protrusion 22 and the clamping socket 112, and further improving the plug-in efficiency and convenience.

[0071] In another embodiment, if Figure 4 and Fig. 9 As shown, the anvil seat 2 is also provided with a plug-in reserved opening 23, and the plug-in guide rib groove 24 is provided at the bottom of the plug-in reserved opening 23, and the groove depth of the plug-in guide rib groove 24 is less than the height of the plug-in guide rib 113. Specifically, the plug-in reserved opening 23 is used to achieve a certain avoidance and reduce the groove depth of the plug-in guide rib groove 24, so that the plug-in guide rib groove 24 can only be buried over the bottom of the plug-in guide rib 113, thereby reducing the contact area between the inner wall of the plug-in guide rib groove 24 and the outer wall of the plug-in guide rib 113, thereby reducing the plug-in friction, so that the plug-in guide rib 113 can play a guiding role, and will not affect the plug-in effect due to excessive friction with the inner wall of the plug-in guide rib 113. In addition, the firmness of the stapler beak 1 installed on the anvil seat 2 is further enhanced, and the convenience of plugging and unplugging the stapler beak 1 is further improved.

[0072] In another embodiment, if Figure 4 , Figure 7 , Figure 8 and Fig. 9As shown, the nozzle 21 is provided with a second pre-tightening surface 211 matching the first pre-tightening surface 1111; specifically, the second pre-tightening surface 211 may be a pre-tightening inclined surface or a pre-tightening arc surface, and the first pre-tightening surface 1111 matches the second pre-tightening surface 211. When the nozzle 21 is inserted into the plug-in cavity 111, the second pre-tightening surface 211 is provided to sharpen the end of the nozzle 21, so that it is easier to align and insert into the plug-in cavity 111. In addition, when the stapler beak 1 is removed, the second pre-tightening surface 211 is provided to sharpen the end of the nozzle 21, so that it can make way for the nozzle 21 when it is pulled out of the plug-in cavity 111, and play a certain avoidance role, so that the nozzle 21 can be pulled out of the plug-in cavity 111 faster and easier, thereby further improving the convenience of plugging and unplugging the stapler beak 1. Implementation 1: The mouthpiece 21 of the stapler beak 1 is inserted into the insertion and extraction cavity 111 of the anvil seat 2 until the protrusion 22 is engaged with the bayonet 112, and the first pre-tightening surface 1111 and the second pre-tightening surface 211 are in a separated state. Implementation 2: The mouthpiece 21 of the stapler beak 1 is inserted into the insertion and extraction cavity 111 of the anvil seat 2 until the second pre-tightening surface 211 abuts against the first pre-tightening surface 1111, at which time the protrusion 22 is just engaged with the bayonet 112. In Implementation 2, when the mouthpiece 21 is fully inserted into the insertion and extraction cavity 111 until the second pre-tightening surface 211 abuts against the first pre-tightening surface 1111, a certain pre-tightening force can be provided for the mouthpiece 21 inserted into the insertion and extraction cavity 111, so that the stapler beak 1 is installed more securely.

[0073] like Figure 7 and Figure 8 As shown, the clamping protrusion 22 is provided with: a guiding inclined surface 221, a clamping surface 222 and a transition surface 223. Wherein:

[0074] The guiding inclined surface 221 is inclined downwardly toward the second pre-tightening surface 211;

[0075] A clamping surface 222 is provided on a side of the clamping protrusion 22 away from the second pre-tightening surface 211 and is used to abut against the inner side wall of the clamping opening 112;

[0076] The transition surface 223 is adjacent to the guide inclined surface 221 and / or the holding surface 222; the setting of the transition surface 223 enables the staggered angle to be generated more quickly between the bayonet 112 and the clamping protrusion 22 after the mouth edge 12 and the plug-in portion 11 are bent and force is applied to the bayonet 12 when the stapler beak 1 is pre-pulled out, specifically, the staggered angle is more easily generated between the clamping surface 222 on the clamping protrusion 22 and the inner wall of the bayonet 112 abutting against the clamping surface 222, thereby making it easier to pull the stapler beak 1 outward, thereby more effectively improving the convenience of pulling out the stapler beak 1 (for a more detailed pulling out process, see the following plug-in process);

[0077] like Figure 8 , Fig. 9 and Fig.10As shown, the nozzle portion 21 is further provided with a third pre-tightening surface 212 obliquely downward toward the clamping protrusion 22, and a clamping position 213 is formed between the third pre-tightening surface 212 and the clamping surface 222, and the portion of the plug-in portion 11 clamped into the clamping position 213 is recorded as a clamping end 114, which satisfies the following formula 1 and / or formula 2 or formula 3:

[0078] Formula 1: q≤n≤p;

[0079] In formula 1, n represents the length of the clamping end 114 along the direction of the clamping opening 112, specifically, the distance between the inner side wall of the clamping opening 112 close to the opening and the opening, q represents the shortest distance from the clamping surface 222 to the third pre-tightening surface 212, and p represents the longest distance from the clamping surface 222 to the third pre-tightening surface 212;

[0080] Formula 2: z+q≤m≤z+p;

[0081] In Formula 2, m represents the longest distance from the opening to the first pre-tightening surface 1111, q represents the shortest distance from the clamping surface 222 to the third pre-tightening surface 212, p represents the longest distance from the clamping surface 222 to the third pre-tightening surface 212, and z represents the longest distance from the second pre-tightening surface 211 to the clamping surface 222;

[0082] Formula 3: n≤q and m≤z+q;

[0083] In formula 3, n represents the length of the clamping end 114 along the direction of the bayonet 112, m represents the longest distance from the opening to the first pre-tightening surface 1111, q represents the shortest distance from the clamping surface 222 to the third pre-tightening surface 212, and z represents the longest distance from the second pre-tightening surface 211 to the clamping surface 222. Specifically, the third pre-tightening surface 212 can be a pre-tightening inclined surface or a pre-tightening arc concave surface. The clamping end 114 is specifically the portion of the plug-in portion 11 from the inner side wall of the bayonet 112 close to the opening to the edge of the opening.

[0084] Implementation 1: The mouth portion 21 of the stapler beak 1 is inserted into the insertion and extraction cavity 111 of the anvil 2 until the protrusion 22 is engaged with the bayonet 112, and the first pre-tightening surface 1111 and the second pre-tightening surface 211 are separated. Figure 6 and Fig.10As shown, when formula one is satisfied, after the stapler beak 1 is installed on the mounting mouth portion 21 of the stapler seat 2, the first pre-tightening surface 1111 and the second pre-tightening surface 211 are in a separated state, and after the latch 22 is latched into the latch port 112, the holding end 114 will be completely placed in the holding position 213, and the holding position 213 can also reserve a certain gap, that is, the holding end 114 does not contact the third pre-tightening surface 212, which can leave enough movable space for the plugging and unplugging action, and can also play a certain limiting role on the stapler beak 1 through the holding surface 222, thereby avoiding the situation of over-plugging and unplugging caused by large movements.

[0085] Implementation 2: The mouth portion 21 of the stapler beak 1 is inserted into the insertion and extraction cavity 111 of the anvil seat 2 until the second pre-tightening surface 211 abuts against the first pre-tightening surface 1111, and at this time, the locking protrusion 22 is just locked into the locking hole 112. In implementation 2, if Figure 5 , Figure 8 and Fig. 9 As shown, since the third pre-tightening surface 212 is an inclined surface or an arc concave surface, and satisfies Formula 1 and / or Formula 2, it is ensured that: when the stapler beak 1 is installed on the anvil seat 2, the mouth portion 21 is inserted into the plug-in cavity 111 from the open position until the second pre-tightening surface 211 is against the first pre-tightening surface 1111, at which time the clamping protrusion 22 is just clamped into the clamping port 112, and the clamping end 114 is just clamped into the clamping position 213, and the clamping position 213 can better adapt and clamp the clamping end 114, and no extra gap will be generated. In addition, the clamping protrusion 22 is clamped into the clamping port 112, which can provide sufficient pre-tightening force for the clamping end 114, further avoiding the safety hazard caused by the stapler beak 1 falling off during the operation. Preferably, the length of the clamping port 112 along the length direction of the plug-in guide rib 113 is greater than or equal to the length of the clamping protrusion 22 along the length direction of the plug-in guide rib groove 24. Furthermore, the firmness of the stapler beak 1 installed on the anvil 2 is further enhanced, and the convenience of inserting and removing the stapler beak 1 is further improved.

[0086] Another embodiment, a hawkbill plug-in stapler, includes a plug-in hawkbill staple cartridge assembly as described in any one of the aforementioned items.

[0087] Plugging process:

[0088] When assembling, Figure 4 and Figure 7 As shown, the insertion and extraction cavity 111 of the stapler beak 1 is inserted into the mouth portion 21 on the anvil seat 2 until the protrusion 22 is inserted into the bayonet 112. Specifically, the insertion and extraction guide rib 113 in the insertion and extraction cavity 111 needs to be aligned with the insertion and extraction guide rib groove 24 on the mouth portion 21, and then pushed inward until the protrusion 22 is successfully inserted into the bayonet 112.

[0089] When disassembling, optional, such as Fig.10As shown, one hand holds the A section of the anvil 2, and the other hand half holds the stapler beak 1, the thumb of the other hand presses against the beak edge 12 along the direction of arrow B, and the other fingers (or any one of 1 to 4) of the other hand hold the plug-in portion 11 along the direction of arrow C; when preparing to pull out, the thumb of the other hand presses along the direction of arrow B to apply force to the beak edge 12, and at the same time pulls outward along the direction of arrow D, then when the thumb presses, the clamping protrusion 22 and the clamping port 112 will be misaligned and form a certain pull-out inclination angle, refer to Fig.11 , and at the same time, because of pulling outward along the direction of arrow D, the stapler beak 1 can be pulled out along the direction of arrow D.

[0090] It should be mentioned that when the stapler beak 1 is pried open, the inner wall of the latch 112 close to the open side and the retaining surface 222 on the retaining protrusion 22 will be misaligned with each other. During disassembly, the stapler beak 1 must be pulled outward while being pried open to remove the stapler beak 1. This prevents the stapler beak 1 from falling off due to misoperation or collision, which can effectively avoid the problem of the stapler beak 1 falling off accidentally during surgery and reduce safety hazards.

[0091] 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 protection scope of the present invention.

Claims

1. A stapler beak, comprising an integrally formed plug-in portion (11) and a beak edge portion (12), characterized in that: The plug-in portion (11) is internally formed with a plug-in cavity (111) which is open toward a side away from the mouth edge portion (12), and the top surface of the plug-in portion (11) is provided with a bayonet (112) which is connected to the plug-in cavity (111); The inner wall of the plug-in and pull-out cavity (111) is provided with plug-in and pull-out guide ribs (113).

2. The stapler according to claim 1, characterized in that: At least two of the bayonet ports (112) are provided; The plugging and unplugging guide rib (113) is arranged on the inner wall of the plugging and unplugging cavity (111) and is located between the two bayonet openings (112).

3. The stapler according to claim 1, characterized in that: In the lateral section of the stapler's beak: An angle λ is formed at one end of the mouth edge portion (12) away from the plug-in portion (11), and 10°≤λ≤20°; The included angle between the bottom edge of the plug-in portion (11) and the bottom edge of the mouth edge portion (12) is α, and 120°≤α≤150°; The included angle between the top edge of the plug-in portion (11) and the top edge of the mouth edge portion (12) is β, and 130°≤β≤170°.

4. The stapler according to claim 1 or 2, characterized in that: A first pre-tightening surface (1111) is provided on the inner wall of the plug-in cavity (111) at one end away from the opening.

5. A plug-in hawkbill stapler assembly, characterized in that: include: The beak is the beak of the stapler according to any one of claims 1 to 4; as well as A nail anvil (2), wherein one end of the nail anvil (2) is provided with a mounting mouth (21) matching the plug-in cavity (111), and the mounting mouth (21) is provided with a clamping protrusion (22) matching the clamping socket (112).

6. The plug-in hawkbill type nail magazine assembly according to claim 5, characterized in that: The anvil seat (2) is provided with an insertion and extraction guide rib groove (24) matching the insertion and extraction guide rib (113).

7. The plug-in hawkbill type nail magazine assembly according to claim 6, characterized in that: The anvil seat (2) is also provided with a reserved opening for plugging and unplugging (23), and the plugging and unplugging rib guide groove (24) is arranged at the bottom of the reserved opening for plugging and unplugging (23).

8. The plug-in hawkbill type nail magazine assembly according to claim 5 referring to claim 4, characterized in that: The nozzle portion (21) is provided with a second pre-tightening surface (211) matching the first pre-tightening surface (1111); The clamping protrusion (22) is provided with: A guide inclined surface (221) inclined downwardly in a direction toward the second pre-tightening surface (211); A clamping surface (222) is provided on a side of the clamping protrusion (22) away from the second pre-tightening surface (211); and A transition surface (223) adjacent to the guide inclined surface (221) and / or the holding surface (222); The nozzle portion (21) is further provided with a third pre-tightening surface (212) obliquely downwardly directed toward the latching protrusion (22); a latching position (213) is formed between the third pre-tightening surface (212) and the latching surface (222); the portion of the plug-in portion (11) that is latched into the latching position (213) is recorded as a latching end (114), and satisfies the following formula 1 and / or formula 2 or formula 3: Formula 1: q≤n≤p; In formula 1, n represents the length of the clamping end (114) along the direction of the clamping port (112), q represents the shortest distance from the clamping surface (222) to the third pre-tightening surface (212), and p represents the longest distance from the clamping surface (222) to the third pre-tightening surface (212); Formula 2: z+q≤m≤z+p; In formula 2, m represents the longest distance from the opening to the first pre-tightening surface (1111), q represents the shortest distance from the clamping surface (222) to the third pre-tightening surface (212), p represents the longest distance from the clamping surface (222) to the third pre-tightening surface (212), and z represents the longest distance between the second pre-tightening surface (211) and the clamping surface (222); Formula 3: n≤q and m≤z+q; In formula 3, n represents the length of the clamping end (114) along the direction of the clamping port (112), m represents the longest distance from the opening to the first pre-tightening surface (1111), q represents the shortest distance from the clamping surface (222) to the third pre-tightening surface (212), and z represents the longest distance from the second pre-tightening surface (211) to the clamping surface (222).

9. An eagle-beak plug-in stapler, characterized in that: It comprises a plug-in hawkbill type nail magazine assembly as described in any one of claims 5 to 8.

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