Nail bin assembly direction adjusting and locking device and anastomat

Abstract

The invention relates to the field of anastomats, in particular to a staple cartridge assembly direction adjusting and locking device and an anastomat. The device comprises a driving rotating assembly, a driven rotating assembly, a reset elastic piece and a locking assembly, the driving rotating assembly comprises a rotating handle and a pushing gear, a plurality of pushing teeth are arranged on the peripheral wall of the pushing gear, and the rotating handle is connected with the pushing gear; the driven rotating assembly comprises a transmission rod and a fixed gear, a plurality of fixed teeth are arranged on the peripheral wall of the fixed gear, the transmission rod is connected with the fixed gear, and the upper end of the transmission rod penetrates through the push gear and extends into the rotating handle; the reset elastic piece is arranged between the driving rotating assembly and the driven rotating assembly, so that the push gear is in a normal state that the push teeth directly face the fixed teeth; the locking assembly comprises a locking block and a locking elastic piece, the locking block is provided with a tooth pushing groove matching part and a tooth fixing groove matching part which are connected with each other, and the locking elastic piece acts on the locking block. The nail bin assembly has more adjusting stages, hard locking of the position of the nail bin assembly can be achieved after the angle of the nail bin assembly is adjusted, and the nail bin assembly is more reliable.

Description

Technical Field

[0001] The present invention relates to the field of staplers, and in particular to a stapler assembly direction adjustment locking device and a stapler. Background Art

[0002] The stapler is mainly used to achieve tissue resection and incision anastomosis during laparoscopic surgery. In order to meet the needs of various operating angles, the stapler's stapler assembly has a swing function and can be locked after swinging to the corresponding angle.

[0003] The application number is CN202122748632.4, and the patent name is "Damager steering control mechanism for laparoscopic stapler". In the background technology, a steering control mechanism is mentioned, including a housing, a rotating positioning rod, a rotating lower pressure plate, a rotating upper pressure plate, a compression spring, a rotating cover and a rotating handle; the rotating upper pressure plate is arranged between the rotating cover and the rotating lower pressure plate, and the compression spring presses the rotating upper pressure plate against the rotating lower pressure plate, and the end faces of the rotating lower pressure plate and the rotating upper pressure plate are matched, a circle of card grooves are formed on the rotating lower pressure plate, and a card convex is provided on the rotating upper pressure plate, and the adjusting knob, the rotating upper pressure plate and the rotating positioning rod rotate synchronously, and the rotating positioning rod is driven to rotate by turning the adjusting knob, and the rotating positioning rod drives the stapler assembly to bend to select a suitable angle for surgical operation.

[0004] In this structure, the number of teeth on the lower pressing plate is relatively small and fixed, resulting in a relatively small number of adjustable levels of the final assembly, which is inconvenient for doctors to operate; and when doctors pull the rotating handle, they need to use a lot of force to overcome the first slot of the rotating lower pressing plate and accurately stop at the next slot, resulting in the doctor's weak strength and unable to move it, and strong strength will cause it to pass through multiple slots at once, which is laborious and inaccurate to position. In addition, this structure is not hard-locked, and there is a risk that the nail magazine assembly will be out of its locked position during use.

[0005] The application number is CN202122748632.4, and the patent name is Damping steering control mechanism for laparoscopic stapler. In the specific implementation method, an improved scheme for the above scheme is provided, in which damping is provided to the cam by a rubber ring. When adjusting the angle, the cam is rotated by pulling the rotating handle. After the handle is stopped, the rubber ring fixes the cam through the damping between the rubber ring and the cam. Although the improved scheme can achieve stepless adjustment, if the damping provided by the rubber ring to the cam is too large, there is still a problem that the doctor needs to spend a lot of effort to pull the rotating handle. If the damping provided by the rubber ring to the cam is relatively small, there is a risk that the staple cartridge assembly will be out of its locked position during use. In addition, after long-term use, the damping of the cam by the rubber ring will weaken, increasing the risk of the staple cartridge assembly being out of its locked position during use. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a nail magazine assembly direction adjustment locking device, which is easy to operate, can have more adjustment levels, and can achieve hard locking of the position of the nail magazine assembly after adjusting the angle of the nail magazine assembly, which is more reliable.

[0007] In order to solve the above technical problems, the technical solution of the present invention is: a direction adjustment locking device for a nail magazine assembly, comprising:

[0008] Eccentric linkage structure;

[0009] The active rotation assembly comprises a rotating handle and a pushing gear, wherein a peripheral wall of the pushing gear is provided with a plurality of pushing teeth, and a pushing tooth groove is formed between adjacent pushing teeth, and the rotating handle is connected to the pushing gear;

[0010] A passive rotation assembly, comprising a transmission rod and a fixed gear, wherein a peripheral wall of the fixed gear is provided with a plurality of fixed teeth, the number of the fixed teeth is equal to the number of the pushing teeth, and fixed tooth grooves are formed between adjacent fixed teeth, the transmission rod is connected to the fixed gear, and the upper end portion passes through the pushing gear and extends into the rotating handle;

[0011] A resetting elastic member is arranged between the active rotating assembly and the passive rotating assembly, so that the pushing gear is normally facing the fixed gear with the pushing teeth;

[0012] A locking assembly, comprising a locking block and a locking elastic member, wherein the locking block has a push tooth groove matching portion and a fixed tooth groove matching portion connected to each other, the push tooth groove matching portion is used to be embedded in the push tooth groove, and the fixed tooth groove matching portion is used to be embedded in the fixed tooth groove to lock the fixed gear, and the locking elastic member acts on the locking block to apply a force toward the locking direction to the locking block; wherein,

[0013] When the rotating handle drives the push gear to rotate from the normal state, the push gear pushes the push gear groove matching part to drive the fixed gear groove matching part to disengage from the fixed gear groove and rotate to stagger the fixed gear, and then the rotating handle drives the transmission rod to rotate, so that the transmission rod drives the fixed gear to rotate with the push gear;

[0014] After the rotating handle is released, the active rotating assembly rotates to the point where the push tooth is directly opposite to the fixed tooth under the rebound action of the reset elastic member, and the locking block is locked by embedding the fixed tooth groove through its fixed tooth groove matching portion under the rebound of the locking elastic member;

[0015] The passive rotation assembly has an eccentric portion, and the eccentric portion is connected to the nail magazine assembly through the eccentric linkage structure, and is used for driving the nail magazine assembly to swing through the eccentric linkage structure when performing eccentric rotation.

[0016] Furthermore, the fixed teeth are square teeth, and the pushing teeth are triangular teeth.

[0017] Furthermore, the push gear is provided with an insertion slot, and the rotating handle is connected to the push gear by inserting its insertion portion into the insertion slot.

[0018] Furthermore, the transmission rod and the fixed gear are connected through concave-convex fitting.

[0019] A specific structure of a reset elastic member is further provided, wherein the reset elastic member is configured with two, both of which are spring coils. The spring coils are sleeved on the transmission rod and have an action part. A mating pin is provided at a position off-center of the push gear, and the action parts of the two spring coils act on both sides of the mating pin.

[0020] A matching method between a transmission rod and a rotating handle is further provided, wherein the upper end of the transmission rod is provided with a protrusion protruding radially outward, and the rotating handle is provided with a matching groove, and the protrusion extends into the matching groove. When the rotating handle drives the push gear to rotate from normal state to the push tooth being staggered from the fixed tooth, the side wall of the matching groove abuts against the protrusion.

[0021] A specific structure of a rotating handle is further provided. The rotating handle comprises a rotating seat and a handle portion. The rotating seat is rotatably mounted on the gun body of the stapler. The push gear is connected to the rotating seat, and the handle portion is connected to the rotating seat.

[0022] To further prevent misadjustment, the direction adjustment locking device of the nail magazine assembly also includes a safety mechanism, which is used to prevent the passive rotation assembly from rotating when it is embedded in the passive rotation assembly.

[0023] The present invention also relates to a stapler, comprising a direction adjustment locking device for a staple cartridge assembly.

[0024] After adopting the above technical solution, the present invention has the following beneficial effects:

[0025] 1. The present invention realizes the adjustment and locking of the angle of the nail magazine assembly through the cooperation of the passive rotating assembly and the active rotating assembly. When the angle of the nail magazine assembly needs to be adjusted, the rotating handle is pulled. In the process of the passive rotating assembly rotating with the active rotating assembly, since the push teeth and the fixed teeth are staggered, they can press against the locking assembly in turn. The locking assembly will not interfere with the rotation of the active rotating assembly and the passive rotating assembly. It does not take too much effort to pull the rotating handle, which greatly reduces the difficulty of operation.

[0026] 2. The passive rotation component can swing the nail magazine component through the eccentric rotation of its eccentric part, so as to adjust the angle of the nail magazine component. After adjusting to the appropriate position, release the rotating handle, and the active rotation component rotates until the push tooth is opposite to the fixed tooth under the rebound action of the reset elastic member. The locking block is embedded in the fixed tooth groove through its fixed tooth groove matching part under the rebound of the locking elastic member, so as to realize hard locking, which is more reliable and avoids the nail magazine assembly from swinging during the use of the nail magazine assembly.

[0027] 3. The present invention realizes locking through the cooperation between the fixed tooth grooves on the peripheral wall of the fixed gear and the fixed tooth groove matching parts. A relatively large number of fixed tooth grooves can be provided. Therefore, although the present invention realizes stepped adjustment, it can have more adjustment levels compared with the traditional stepped adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the staple cartridge assembly direction adjustment locking device of the present invention being installed on the stapler gun body;

[0029] Figure 2 It is a structural schematic diagram of the direction adjustment locking device of the nail magazine assembly of the present invention;

[0030] Figure 3 Based Figure 2 A magnified view of part A;

[0031] Figure 4 It is a structural schematic diagram of the nail magazine assembly direction adjustment locking device of the present invention, in which the push teeth of the push gear face the fixed teeth of the fixed gear after the rotary handle is removed;

[0032] Figure 5 It is a structural schematic diagram of the nail magazine assembly direction adjustment locking device of the present invention, in which the push teeth of the push gear are staggered with the fixed teeth of the fixed gear after the rotary handle is removed;

[0033] Figure 6 It is a structural schematic diagram of a rotating handle of a direction adjustment locking device of a nail magazine assembly of the present invention;

[0034] Figure 7 It is a structural schematic diagram of a locking assembly of a nail magazine assembly direction adjustment locking device of the present invention;

[0035] Figure 8 It is a structural schematic diagram of a push gear of a direction adjustment locking device of a nail magazine assembly of the present invention;

[0036] Fig. 9 It is a structural schematic diagram of the cooperation between the passive rotating assembly and the eccentric linkage structure of the nail magazine assembly direction adjustment locking device of the present invention;

[0037] Fig.10 It is a structural schematic diagram of the spring coil of the present invention;

[0038] Fig.11 for Figure 4 A diagram showing the matching groove of the rotating handle and the projection of the transmission rod in the state where the pushing teeth of the pushing gear face the fixed teeth of the fixed gear;

[0039] Fig.12 for Figure 5 A diagram of the matching groove of the rotating handle and the protrusion of the transmission rod in the state (the pushing teeth of the pushing gear are staggered with the fixed teeth of the fixed gear);

[0040] In the figure, 1. active rotating component; 11. rotating handle; 111. rotating seat; 112. handle part; 11a. matching groove; 11b. insertion part; 12. push gear; 121. push tooth; 122. insertion groove; 2. passive rotating component; 21. transmission rod; 211. protrusion; 22. fixed gear; 221. fixed tooth; 3. reset elastic member; 31. action part; 4. locking component; 41. locking block; 411. push tooth groove matching part; 412. fixed tooth groove matching part; 42. locking elastic member; 5. eccentric linkage structure; 51. steering transmission plate; 52. rear hook; 6. gun body; 7. safety mechanism; 8. eccentric part; 9. matching pin. DETAILED DESCRIPTION

[0041] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0042] like Figures 1 to 12 As shown, a direction adjustment locking device for a nail magazine assembly comprises:

[0043] Eccentric linkage structure 5;

[0044] The active rotation assembly 1 includes a rotating handle 11 and a pushing gear 12. The peripheral wall of the pushing gear 12 is provided with a plurality of pushing teeth 121. Pushing tooth grooves are formed between adjacent pushing teeth 121. The rotating handle 11 is connected to the pushing gear 12.

[0045] The passive rotating assembly 2 includes a transmission rod 21 and a fixed gear 22. The peripheral wall of the fixed gear 22 is provided with a plurality of fixed teeth 221. The number of the fixed teeth 221 is equal to the number of the push teeth 121. Fixed tooth grooves are formed between adjacent fixed teeth 221. The transmission rod 21 is connected to the fixed gear 22, and the upper end thereof passes through the push gear 12 and extends into the rotating handle 11.

[0046] The resetting elastic member 3 is arranged between the active rotating assembly 1 and the passive rotating assembly 2, so that the push gear 12 is in a normal state with the push tooth 121 facing the fixed tooth 221;

[0047] The locking assembly 4 includes a locking block 41 and a locking elastic member 42. The locking block 41 has a push tooth groove matching portion 411 and a fixed tooth groove matching portion 412 connected to each other. The push tooth groove matching portion 411 is used to be embedded in the push tooth groove, and the fixed tooth groove matching portion 412 is used to be embedded in the fixed tooth groove to lock the fixed gear 22. The locking elastic member 42 acts on the locking block 41 to apply a force toward the locking direction to the locking block 41; wherein,

[0048] When the handle 11 is rotated to drive the push gear 12 to rotate from the normal state, the push gear 121 pushes the push gear groove matching part 411 to drive the fixed gear groove matching part 412 to disengage from the fixed gear groove and rotate to stagger the fixed gear 221. Then the handle 11 is rotated to drive the transmission rod 21 to rotate, so that the transmission rod 21 drives the fixed gear 22 to rotate with the push gear 12.

[0049] After the rotating handle 11 is released, the active rotating assembly 1 rotates to the point where the push tooth 121 faces the fixed tooth 221 under the rebound action of the reset elastic member 3, and the locking block 41 is locked by embedding the fixed tooth groove through its fixed tooth groove matching portion 412 under the rebound of the locking elastic member 42;

[0050] The passive rotation assembly 2 has an eccentric portion 8, which is connected to the nail magazine assembly via an eccentric linkage structure 5, and is used to drive the nail magazine assembly to swing via the eccentric linkage structure 5 when performing eccentric rotation.

[0051] Specifically, this embodiment achieves the adjustment and locking of the angle of the nail magazine assembly through the cooperation of the passive rotating assembly 2 and the active rotating assembly 1. When the angle of the nail magazine assembly needs to be adjusted, the rotating handle 11 is pulled. During the process of the passive rotating assembly 2 rotating with the active rotating assembly 1, since the pushing teeth 121 and the fixed teeth 221 are staggered, they can alternately press against the locking assembly 4. During the process of the passive rotating assembly 2 and the active rotating assembly 1 rotating, the locking assembly 4 is always pressed against and cannot be stuck in the fixed tooth groove (such as Figure 5 and Fig.12 As shown), the locking assembly 4 will not interfere with the rotation of the active rotating assembly 1 and the passive rotating assembly 2. Therefore, it is not necessary to spend too much effort to turn the rotating handle 11, which greatly reduces the difficulty of operation.

[0052] In addition, the passive rotating component 1 is linked to the swing of the nail magazine component through the eccentric rotation of its eccentric part 8, so as to adjust the angle of the nail magazine component. After adjusting to the appropriate position, the rotating handle 11 is released, and the active rotating component 1 rotates until the pushing tooth 121 is opposite to the fixed tooth 221 under the rebound action of the reset elastic member 3. The locking block 41 is embedded in the fixed tooth groove through its fixed tooth groove matching part 412 under the rebound of the locking elastic member 42, thereby realizing hard locking, which is more reliable, thereby avoiding the swing of the nail magazine assembly during use.

[0053] Furthermore, in this embodiment, locking is achieved through the cooperation between the fixed tooth grooves on the peripheral wall of the fixed gear 22 and the fixed tooth groove matching part 412. A relatively large number of fixed tooth grooves can be provided. Therefore, although the present invention realizes stepped adjustment, it can have more adjustment levels compared to traditional stepped adjustment.

[0054] In this embodiment, the eccentric linkage structure 5 is a prior art, such as Figure 2 and Fig. 9 As shown, it generally includes a steering transmission plate 51, a rear hook 52, etc. The eccentric portion 8 is a cylindrical pin installed at a position off-center of the transmission rod 21. The steering transmission plate 51 has a strip hole. The cylindrical pin is inserted into the strip hole. During the eccentric rotation process, the steering transmission plate 51 is driven to make reciprocating linear motion in the constrained moving direction by cooperating with the strip hole. The steering transmission plate 51 is connected to the rear hook 52, and the rear hook 52 is connected to the nail magazine assembly through a steering hook. During the process of the passive rotating assembly 2 driving the eccentric portion 8 to make an eccentric rotation, the steering hook drives the nail magazine assembly to swing.

[0055] In this embodiment, if Figure 4 , Figure 5 and Figure 6 As shown, the push gear 12 is provided with an insertion slot 122, and the rotating handle 11 is connected to the push gear 12 by inserting its insertion portion 11b into the insertion slot 122. Such a configuration facilitates assembly. Of course, the connection method between the push gear 12 and the rotating handle 11 is not limited to this.

[0056] In this embodiment, the transmission rod 21 and the fixed gear 22 are connected by concave-convex matching, one of which is provided with a concave portion extending axially and off-center, and the other is provided with a convex portion extending axially and off-center, and the convex portion is embedded in the concave portion, so that the two can rotate synchronously. This connection method is convenient for assembly.

[0057] In one embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Fig. 9As shown, the fixed teeth 221 are square teeth, and the push teeth 121 are triangular teeth. Accordingly, the fixed tooth grooves formed between adjacent fixed teeth 221 are also square, the shape of the portion of the fixed tooth groove matching portion 412 used for embedding the fixed tooth groove is consistent with the shape of the fixed tooth groove, the push tooth grooves formed between adjacent push teeth 121 are also triangular, the shape of the portion of the push tooth groove matching portion 411 used for embedding the push tooth groove is consistent with the shape of the push tooth groove, and the inclined surface of the push tooth 121 is relatively gentle, ensuring that the push tooth groove matching portion 411 can pass over the inclined surface of the push tooth 121 during the rotation of the push gear 12. In order to facilitate the fixed tooth matching portion 412 to be embedded in the fixed tooth groove, the angle of the top of the fixed tooth groove matching portion 412 is a circular arc angle, and the angle of the bottom of the fixed tooth groove is also a circular arc angle.

[0058] It should be noted that the structure of the push tooth 121 and the fixed tooth 221 is not limited to this, and the push tooth 121 can also be arc-shaped, etc., so as to push the push tooth groove matching part 411 out of the push tooth groove during the rotation. The structure of the fixed tooth 221 can also be wedge-shaped, etc., so as to achieve locking of the fixed tooth groove matching part 412.

[0059] In one embodiment, Figure 4 , Figure 5 and Fig.10 As shown, there are two reset elastic members 3, both of which are spring coils. The spring coils are sleeved on the transmission rod 21 and have an action portion 31. A matching pin 9 is provided at a position off-center of the push gear 12. The action portions 31 of the two spring coils are used to act on both sides of the matching pin 9.

[0060] When the push gear 12 and the matching pin 9 are in the zero position (such as Fig.11 As shown in the figure, the nail magazine assembly is in the middle position. At this time, the action parts 31 of the two spring coils are in contact with or close to one side of the matching pin 9. In the contact state, the two spring coils can be in a state where no elastic deformation occurs and no force is applied to the matching pin 9, or both apply force to the matching pin 9, but the forces just cancel each other out. By setting two spring coils, no matter which direction the push gear 12 rotates from the zero position, one of the spring coils can be pushed to deform (such as Fig.12 As shown), after the external force of rotating the rotating handle 11 disappears, the deformed spring ring can push the push gear 12 to reset through its rebound.

[0061] like Fig.10 As shown, the action portion 31 of the spring ring is also bent into a small ring, so as to improve the reliability of contact with the matching pin 9.

[0062] In one embodiment, Figure 4 , Figure 5 , Figure 6 and Fig. 9 , Fig.11 and Fig.12As shown, the upper end of the transmission rod 21 is provided with a protrusion 211 protruding outward in the radial direction, and the rotating handle 11 is provided with a matching groove 11a, and the protrusion 211 extends into the matching groove 11a. The rotating handle 11 drives the push gear 12 to rotate from the normal state (such as Fig.11 When the push tooth 121 is rotated to stagger the fixed tooth 221, the side wall of the matching groove 11a abuts against the protrusion 211 (as shown in FIG. Fig.12 shown).

[0063] In this way, the active rotating assembly 1 can rotate independently first and then push the transmission rod 21 and the fixed gear 11 to rotate when the self-propelled gear 12 rotates normally. In addition, after the external force applied to the rotating handle 11 disappears, the active rotating assembly 1 can reset a distance of the push tooth groove independently.

[0064] It should be noted that the matching manner of the transmission rod 21 and the rotating handle 11 is not limited to this, and the protrusion 211 and the matching groove 11a can also be swapped.

[0065] In one embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the rotating handle 11 includes a rotating seat 111 and a handle portion 112 . The rotating seat 111 is rotatably mounted on the gun body 6 of the stapler. The push gear 12 is connected to the rotating seat 111 , and the handle portion 112 is connected to the rotating seat 111 .

[0066] The rotating handle 11 of this structure is convenient to operate and to install on the gun body 6 of the stapler.

[0067] In one embodiment, Figure 1 As shown, the direction adjustment locking device of the nail magazine assembly further includes a safety mechanism 7, and the safety mechanism 7 is used to prevent the passive rotation assembly 2 from rotating when the passive rotation assembly 2 is embedded.

[0068] In this way, when the safety mechanism 7 is embedded in the passive rotating assembly 2, even if the rotating handle 11 is rotated by mistake or the rotating handle 11 is touched, it will not cause the nail magazine assembly to swing, thereby providing safety in use.

[0069] like Figure 1 As shown, a stapler includes the direction adjustment locking device of the staple magazine assembly in any of the above embodiments.

[0070] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A direction adjustment locking device for a staple cartridge assembly, comprising an eccentric linkage structure (5); characterized in that: Also includes; An active rotation assembly (1) comprises a rotating handle (11) and a push gear (12), wherein a peripheral wall of the push gear (12) is provided with a plurality of push teeth (121), and push tooth grooves are formed between adjacent push teeth (121), and the rotating handle (11) is connected to the push gear (12); A passive rotating assembly (2), comprising a transmission rod (21) and a fixed gear (22), wherein a peripheral wall of the fixed gear (22) is provided with a plurality of fixed teeth (221), the number of the fixed teeth (221) being equal to the number of the pushing teeth (121), and fixed tooth grooves being formed between adjacent fixed teeth (221), the transmission rod (21) being connected to the fixed gear (22), and the upper end portion of the transmission rod (21) passing through the pushing gear (12) and extending into the rotating handle (11); A resetting elastic member (3) is arranged between the active rotating assembly (1) and the passive rotating assembly (2), so that the push gear (12) is in a normal state with the push tooth (121) facing the fixed tooth (221); A locking assembly (4), comprising a locking block (41) and a locking elastic member (42), wherein the locking block (41) has a push tooth groove matching portion (411) and a fixed tooth groove matching portion (412) connected to each other, the push tooth groove matching portion (411) is used to be embedded in the push tooth groove, and the fixed tooth groove matching portion (412) is used to be embedded in the fixed tooth groove to lock the fixed gear (22), and the locking elastic member (42) acts on the locking block (41) to apply a force toward the locking direction to the locking block (41); wherein, When the rotating handle (11) drives the push gear (12) to rotate from a normal state, the push tooth (121) pushes the push tooth groove matching portion (411) to drive the fixed tooth groove matching portion (412) to disengage from the fixed tooth groove and rotate to stagger the fixed tooth (221), and then the rotating handle (11) drives the transmission rod (21) to rotate, so that the transmission rod (21) drives the fixed gear (22) to rotate along with the push gear (12); After the rotating handle (11) is released, the active rotating assembly (1) rotates to the point where the push tooth (121) faces the fixed tooth (221) under the rebound action of the reset elastic member (3), and the locking block (41) is locked by embedding the fixed tooth groove through its fixed tooth groove matching portion (412) under the rebound of the locking elastic member (42); The passive rotation component (2) has an eccentric portion (8), and the eccentric portion (8) is connected to the nail magazine component via the eccentric linkage structure (5), and is used to drive the nail magazine component to swing via the eccentric linkage structure (5) when performing eccentric rotation.

2. The direction adjustment locking device of the staple cartridge assembly according to claim 1, characterized in that: The fixed teeth (221) are square teeth, and the pushing teeth (121) are triangular teeth.

3. The direction adjustment locking device of the staple cartridge assembly according to claim 1, characterized in that: The push gear (12) is provided with an insertion slot (122), and the rotating handle (11) is connected to the push gear (12) by inserting its insertion portion (11b) into the insertion slot (122).

4. The direction adjustment locking device of the staple cartridge assembly according to claim 1, characterized in that: The transmission rod (21) and the fixed gear (22) are connected through concave-convex fitting.

5. The direction adjustment locking device of the staple cartridge assembly according to claim 1, characterized in that: The resetting elastic member (3) is provided with two spring rings, both of which are spring rings. The spring rings are sleeved on the transmission rod (21) and have an action portion (31). A matching pin (9) is provided at a position off-center of the push gear (12). The action portions (31) of the two spring rings act on both sides of the matching pin (9).

6. The direction adjustment locking device of the staple cartridge assembly according to claim 1, characterized in that: The upper end of the transmission rod (21) is provided with a protrusion (211) protruding outward in the radial direction, and the rotating handle (11) is provided with a matching groove (11a). The protrusion (211) extends into the matching groove (11a). When the rotating handle (11) drives the push gear (12) to rotate from a normal state to the push gear (121) being offset from the fixed gear (221), the side wall of the matching groove (11a) abuts against the protrusion (211).

7. The direction adjustment locking device of the staple cartridge assembly according to claim 1, characterized in that: The rotating handle (11) comprises a rotating seat (111) and a handle portion (112); the rotating seat (111) is rotatably mounted on the gun body (6) of the stapler; the push gear (12) is connected to the rotating seat (111); and the handle portion (112) is connected to the rotating seat (111).

8. The direction adjustment locking device of the staple cartridge assembly according to claim 1, characterized in that: It also comprises a safety mechanism (7), wherein the safety mechanism (7) is used to prevent the passive rotating component (2) from rotating when the passive rotating component (2) is embedded in the passive rotating component (2).

9. A stapler, characterized in that: The invention comprises a nail magazine assembly direction adjustment locking device as described in any one of claims 1-8.

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