Staple cartridge assembly directional adjustment lockout and stapler

Abstract

The present invention relates to the field of staplers, and specifically to a stapler assembly direction adjustment locking device and a stapler. The device includes an active rotating assembly, a passive rotating assembly, a reset elastic member and a locking assembly. The active rotating assembly includes a rotating handle and a push gear, the peripheral wall of the push gear is provided with a plurality of push teeth, and the rotating handle is connected to the push gear; the passive rotating assembly includes a transmission rod and a fixed gear, the peripheral wall of the fixed gear is provided with a plurality of fixed teeth, the transmission rod is connected to the fixed gear, and the upper end passes through the push gear and extends into the rotating handle; the reset elastic member is provided between the active rotating assembly and the passive rotating assembly, so that the push gear is in a normal state with the push teeth facing the fixed teeth; the locking assembly includes a locking block and a locking elastic member, the locking block has a push tooth groove matching portion and a fixed tooth groove matching portion that are interconnected, and the locking elastic member acts on the locking block. The present invention has more adjustment levels, and can achieve hard locking of the position of the staple magazine assembly after adjusting the angle of the staple magazine assembly, which is more reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of anastomat, in particular to a kind of direction adjusting locking device of staple cartridge assembly and anastomat. BACKGROUND

[0002] Anastomat is mainly used to realize tissue resection and incision anastomosis under endoscopic surgery, in order to meet the demand for a variety of operating angles, the staple cartridge assembly of anastomat has a swing function, and can be locked after swinging to the corresponding angle.

[0003] The patent with the application number CN202122748632.4 and the patent name Damper Steering Control Mechanism for Endoscopic Anastomat is mentioned in the background art, a steering control mechanism includes a housing, a rotary positioning rod, a rotary lower pressing piece, a rotary upper pressing piece, a compression spring, a rotary cover and a rotary handle; The rotary upper pressing piece is arranged between the rotary cover and the rotary lower pressing piece, the compression spring abuts against the rotary upper pressing piece on the rotary lower pressing piece, the rotary lower pressing piece and the rotary upper pressing piece are cooperated at the end face, a circle of clamping grooves are formed on the rotary lower pressing piece, a clamping convex is arranged on the rotary upper pressing piece, the adjusting knob, the rotary upper pressing piece and the rotary positioning rod are synchronously rotated, the rotary positioning rod is driven to rotate by rotating the adjusting knob, and the anastomat assembly is bent to select a suitable angle for surgical operation.

[0004] This structure, the number of teeth of the lower pressing piece is less and fixed, resulting in fewer adjustable levels of the final assembly, which is not convenient for doctors to operate; Moreover, doctors need to use more force to overcome the first slot of the rotary lower pressing piece when pulling the rotary handle, and accurately stop at the next slot, resulting in that doctors with small force cannot move, and doctors with large force will pass through multiple slots at a time, which is laborious and inaccurate. In addition, this structure is not hard locked, and the staple cartridge assembly has the risk of deviating from its locked position during use.

[0005] The patent with the application number CN202122748632.4 and the patent name Damper Steering Control Mechanism for Endoscopic Anastomat is mentioned in the background art, a steering control mechanism includes a housing, a rotary positioning rod, a rotary lower pressing piece, a rotary upper pressing piece, a compression spring, a rotary cover and a rotary handle; The rotary upper pressing piece is arranged between the rotary cover and the rotary lower pressing piece, the compression spring abuts against the rotary upper pressing piece on the rotary lower pressing piece, the rotary lower pressing piece and the rotary upper pressing piece are cooperated at the end face, a circle of clamping grooves are formed on the rotary lower pressing piece, a clamping convex is arranged on the rotary upper pressing piece, the adjusting knob, the rotary upper pressing piece and the rotary positioning rod are synchronously rotated, the rotary positioning rod is driven to rotate by rotating the adjusting knob, and the anastomat assembly is bent to select a suitable angle for surgical operation. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the defects of the prior art and provide a staple cartridge assembly direction adjusting and locking device which is convenient to operate, can have more adjustment stages, and can achieve hard locking of the position of the staple cartridge assembly after the angle of the staple cartridge assembly is adjusted, and is more reliable in locking.

[0007] To solve the above technical problems, the technical scheme of the present application is as follows: a staple cartridge assembly direction adjusting and locking device, comprising:

[0008] an eccentric linkage structure;

[0009] a driving rotation assembly comprising a rotating handle and a push gear, the peripheral wall of the push gear is provided with a plurality of push teeth, push tooth grooves are formed between adjacent push teeth, and the rotating handle is connected with the push gear;

[0010] a driven rotation assembly comprising a transmission rod and a fixed gear, the 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 push teeth, fixed tooth grooves are formed between adjacent fixed teeth, and the transmission rod is connected with the fixed gear and extends through the push gear and into the rotating handle;

[0011] a reset elastic member arranged between the driving rotation assembly and the driven rotation assembly, so that the push gear is in a normal state in which the push teeth face the fixed teeth;

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

[0013] when the rotating handle drives the push gear to rotate from the normal state, the push teeth push the push tooth groove matching portion to drive the fixed tooth groove matching portion to disengage from the fixed tooth groove and rotate to be staggered with the fixed teeth, 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 loosened, the driving rotation assembly rotates to the state in which the push teeth face the fixed teeth under the rebounding action of the reset elastic member, and the locking block is embedded in the fixed tooth groove through the fixed tooth groove matching portion to achieve locking under the rebounding action of the locking elastic member;

[0015] the driven rotation assembly has an eccentric portion, the eccentric portion is connected with the staple cartridge assembly through the eccentric linkage structure, and is used for driving the staple cartridge assembly to swing through the eccentric linkage structure when eccentric rotation is performed.

[0016] Further, the tooth is a square tooth, and the push tooth is a triangular tooth.

[0017] Further, the push gear is provided with an insertion groove, and the rotating handle is inserted into the insertion groove through the insertion part to be connected with the push gear.

[0018] Further, the transmission rod and the tooth gear are connected through a concave-convex matching.

[0019] Further, two reset elastic members are provided, which are both spring rings, the spring rings are sleeved on the transmission rod and have an acting part, the position deviated from the center of the push gear is provided with a matching pin, and the acting parts of the two spring rings act on both sides of the matching pin.

[0020] Further, a matching mode of the transmission rod and the rotating handle is provided, the upper end of the transmission rod is provided with a bulge protruding outward in the radial direction, the rotating handle is provided with a matching groove, the bulge is inserted into the matching groove, and when the rotating handle drives the push gear to rotate from a normal state to a state where the push tooth is staggered with the tooth, the side wall of the matching groove abuts against the bulge.

[0021] Further, a specific structure of the rotating handle is provided, the rotating handle comprises a rotating seat and a handle part, the rotating seat is rotatably installed on the gun body of the anastomat, the push gear is connected with the rotating seat, and the handle part is connected with the rotating seat.

[0022] Further, in order to prevent misadjustment, the staple cartridge assembly direction adjustment locking device further comprises a safety mechanism for preventing the passive rotating assembly from rotating when the passive rotating assembly is embedded.

[0023] The present application also relates to an anastomat comprising the staple cartridge assembly direction adjustment locking device.

[0024] After the above technical scheme is adopted, the present application has the following beneficial effects:

[0025] The present application adjusts and locks the angle of the staple cartridge assembly through the cooperation of the passive rotating assembly and the active rotating assembly. When the angle of the staple cartridge assembly needs to be adjusted, the rotating handle is pulled, and in the process of rotating the passive rotating assembly with the active rotating assembly, the push tooth and the tooth are staggered, so that the push tooth and the tooth can alternately abut against the locking assembly. The locking assembly does not interfere with the rotation of the active rotating assembly and the passive rotating assembly, the rotating handle can be pulled without too much effort, and the operation difficulty is greatly reduced.

[0026] The passive rotation assembly can swing the nail cartridge assembly through eccentric rotation linkage of the eccentric part thereof, the adjustment of the angle of the nail cartridge assembly is realized, after the adjustment to the suitable position, the rotation handle is loosened, the active rotation assembly is rotated to the position that the pushing teeth are opposite to the fixed teeth under the rebound of the reset elastic member, the locking block is embedded into the fixed tooth groove through the fixed tooth groove cooperation part under the rebound of the locking elastic member, the hard locking is realized, the process is more reliable, so that the swing of the nail cartridge assembly is avoided in the process of using the nail cartridge assembly.

[0027] The locking is realized through the cooperation of the fixed tooth groove of the fixed gear peripheral wall and the fixed tooth groove cooperation part, the fixed tooth groove can be set in a relatively large number, therefore, although the present application realizes the step adjustment, compared with the traditional step adjustment, more adjustment steps can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The structure schematic view of the nail cartridge assembly direction adjustment locking device of the present application is installed on the gun body of the anastomat;

[0029] Figure 2 The structure schematic view of the nail cartridge assembly direction adjustment locking device of the present application is installed on the gun body of the anastomat;

[0030] Figure 3 The structure schematic view of the nail cartridge assembly direction adjustment locking device of the present application is installed on the gun body of the anastomat; Figure 2 The enlarged view of A part of the present application;

[0031] Figure 4 The structure schematic view of the nail cartridge assembly direction adjustment locking device of the present application is installed on the gun body of the anastomat;

[0032] Figure 5 The structure schematic view of the nail cartridge assembly direction adjustment locking device of the present application is installed on the gun body of the anastomat;

[0033] Figure 6 The structure schematic view of the nail cartridge assembly direction adjustment locking device of the present application is installed on the gun body of the anastomat;

[0034] Figure 7 The structure schematic view of the nail cartridge assembly direction adjustment locking device of the present application is installed on the gun body of the anastomat;

[0035] Figure 8 The structure schematic view of the nail cartridge assembly direction adjustment locking device of the present application is installed on the gun body of the anastomat;

[0036] Figure 9 The structure schematic view of the nail cartridge assembly direction adjustment locking device of the present application is installed on the gun body of the anastomat;

[0037] Figure 10 The structure schematic view of the spring ring of the present application;

[0038] Figure 11 For Figure 4 The matching diagram of the matching groove of the rotating handle and the protruding block of the transmission rod in the state that the protruding teeth of the pushing gear are opposite to the teeth of the setting gear;

[0039] Figure 12 For Figure 5 The matching diagram of the matching groove of the rotating handle and the protruding block of the transmission rod in the state that the protruding teeth of the pushing gear are opposite to the teeth of the setting gear;

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

[0041] In order to make the content of the present application more easily and clearly understood, the present application will be further described in detail below according to specific embodiments and in conjunction with the accompanying drawings.

[0042] As Figures 1 to 12 shown, a direction adjusting and locking device of a cartridge assembly includes:

[0043] The eccentric linkage structure 5;

[0044] The active rotating assembly 1 includes the rotating handle 11 and the pushing gear 12, the peripheral wall of the pushing gear 12 is provided with a plurality of protruding teeth 121, the protruding tooth slots are formed between adjacent protruding teeth 121, and the rotating handle 11 is connected with the pushing gear 12;

[0045] The passive rotating assembly 2 includes the transmission rod 21 and the setting gear 22, the peripheral wall of the setting gear 22 is provided with a plurality of teeth 221, the number of the teeth 221 is equal to the number of the protruding teeth 121, the tooth slots are formed between adjacent teeth 221, and the transmission rod 21 is connected with the setting gear 22 and the upper end part penetrates through the pushing gear 12 and extends into the rotating handle 11;

[0046] The reset elastic member 3 is arranged between the active rotating assembly 1 and the passive rotating assembly 2, so that the pushing gear 12 is in a normal state that the protruding teeth 121 are opposite to the teeth 221;

[0047] The locking assembly 4 comprises a locking block 41 and a locking elastic member 42, the locking block 41 has a push tooth groove fitting part 411 and a fixed tooth groove fitting part 412 connected with each other, the push tooth groove fitting part 411 is used for embedding into a push tooth groove, the fixed tooth groove fitting part 412 is used for embedding into a fixed tooth groove to lock a fixed gear 22, the locking elastic member 42 acts on the locking block 41 to apply a force to the locking block 41 towards a locking direction; wherein,

[0048] When the rotating handle 11 drives the push gear 12 to rotate from the normal state, the push tooth 121 pushes the push tooth groove fitting part 411 to drive the fixed tooth groove fitting part 412 to disengage from the fixed tooth groove, and rotates to the offset fixed tooth 221, 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 with the push gear 12;

[0049] After the rotating handle 11 is loosened, when the driving rotating assembly 1 rotates to the position that the push tooth 121 is opposite to the fixed tooth 221 under the rebound of the reset elastic member 3, the locking block 41 embeds into the fixed tooth groove through the fixed tooth groove fitting part 412 under the rebound of the locking elastic member 42 to realize locking.

[0050] The passive rotating assembly 2 has an eccentric part 8, the eccentric part 8 connects the nail cartridge assembly through the eccentric linkage structure 5, and is used for driving the nail cartridge assembly to swing through the eccentric linkage structure 5 when eccentric rotating.

[0051] Specifically, the adjustment and locking of the angle of the nail cartridge assembly are realized through the cooperation of the passive rotating assembly 2 and the driving rotating assembly 1. When the angle of the nail cartridge assembly needs to be adjusted, the rotating handle 11 is pulled, and in the process that the passive rotating assembly 2 rotates with the driving rotating assembly 1, the push tooth 121 and the fixed tooth 221 are offset, so that the rotating handle 11 can be pulled in turn to resist the locking assembly 4. In the process that the passive rotating assembly 2 and the driving rotating assembly 1 rotate, the locking assembly 4 is always resisted and cannot be clamped into the fixed tooth groove (as shown in Figure 5 and Figure 12 Therefore, the locking assembly 4 does not interfere with the rotation of the driving rotating assembly 1 and the passive rotating assembly 2, so that the rotating handle 11 can be pulled without too much force, and the operation difficulty is greatly reduced.

[0052] In addition, the passive rotating assembly 1 swings the nail cartridge assembly through the eccentric rotation of the eccentric part 8, so as to adjust the angle of the nail cartridge assembly. After the nail cartridge assembly is adjusted to the appropriate position, the rotating handle 11 is loosened, the driving rotating assembly 1 rotates back to the position that the push tooth 121 is opposite to the fixed tooth 221 under the rebound of the reset elastic member 3, the locking block 41 embeds into the fixed tooth groove through the fixed tooth groove fitting part 412 under the rebound of the locking elastic member 42 to realize hard locking, which is more reliable, so as to avoid the swing of the nail cartridge assembly in the process of using the nail cartridge assembly.

[0053] Furthermore, the present embodiment is locked by the cooperation of the toothed groove of the toothed wheel 22 and the toothed groove cooperation part 412, and the toothed groove can be set in a larger number, so that the present application can have more adjustment stages compared with the traditional step adjustment.

[0054] In the present embodiment, the eccentric linkage structure 5 is a prior art, as shown in Figure 2 , Figure 9 , generally including a steering transmission plate 51, a rear pull hook 52, etc. The eccentric part 8 is a cylindrical pin installed at a position deviating from the center of the transmission rod 21, and the steering transmission plate 51 has a strip-shaped hole, and the cylindrical pin is inserted into the strip-shaped hole. In the process of eccentric rotation, the steering transmission plate 51 which is constrained in the moving direction is driven to do reciprocating linear motion through the cooperation with the strip-shaped hole. The steering transmission plate 51 is connected with the rear pull hook 52, and the rear pull hook 52 is connected with the nail cartridge assembly through a steering pull hook. In the process of eccentric rotation of the eccentric part 8 driven by the passive rotating assembly 2, the steering pull hook drives the nail cartridge assembly to swing.

[0055] In the present embodiment, as shown in Figure 4 , Figure 5 , Figure 6 , the push gear 12 is provided with an insertion groove 122, and the rotating handle 11 is inserted into the insertion groove 122 through the insertion part 11b to realize the connection with the push gear 12. In this way, the assembly is facilitated. Of course, the connection mode between the push gear 12 and the rotating handle 11 is not limited to this.

[0056] In the present embodiment, the transmission rod 21 and the toothed wheel 22 are connected through concave-convex cooperation, one of which is provided with a concave part extending along the axial direction and deviating from the center, and the other is provided with a convex part extending along the axial direction and deviating from the center. The convex part is embedded in the concave part, so that the synchronous rotation of the two is realized. This connection mode facilitates assembly.

[0057] In one embodiment, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, the toothing 221 is square tooth, and the pushing tooth 121 is triangular tooth. Correspondingly, the toothing groove formed between adjacent toothing 221 is square, the shape of the part of the toothing groove fitting portion 412 for embedding the toothing groove is consistent with the shape of the toothing groove, the pushing tooth groove formed between adjacent pushing tooth 121 is triangular, the shape of the part of the pushing tooth groove fitting portion 411 for embedding the pushing tooth groove is consistent with the shape of the pushing tooth groove, and the slope of the pushing tooth 121 is relatively flat, which ensures that the pushing tooth groove fitting portion 411 can pass over the slope of the pushing tooth 121 during the rotation of the pushing tooth gear 12. In order to facilitate the embedding of the toothing fitting portion 412 into the toothing groove, the top end of the toothing groove fitting portion 412 is rounded, and the bottom of the toothing groove is also rounded.

[0058] It should be noted that the structure of the pushing tooth 121 and the toothing 221 is not limited to this, and the pushing tooth 121 can also be arc-shaped or the like, which can push the pushing tooth groove fitting portion 411 away from the pushing tooth groove during rotation. The structure of the toothing 221 can also be wedge-shaped or the like, which can lock the toothing groove fitting portion 412.

[0059] In one embodiment, as shown in Figure 4 , Figure 5 and Figure 10 , the reset elastic member 3 is provided with two spring rings, which are sleeved on the transmission rod 21 and have an acting portion 31. The off-center position of the pushing tooth gear 12 is provided with a matching pin 9, and the acting portions 31 of the two spring rings are used to act on both sides of the matching pin 9.

[0060] When the pushing tooth gear 12 and the matching pin 9 are in the zero position (as shown in Figure 11 ), the nail cartridge assembly is in the central position, at this time, the acting portions 31 of the two spring rings are in contact or close to one side of the matching pin 9. In the case of contact, at this time, the two spring rings can be in a state of not acting on the matching pin 9 without elastic deformation, or can be in a state of applying force to the matching pin 9, but the forces cancel each other out. By providing two spring rings, no matter which direction the pushing tooth gear 12 rotates from the zero position, one of the spring rings can be deformed (as shown in Figure 12 ). After the external force rotating the handle 11 disappears, the deformed spring ring can push the pushing tooth gear 12 back to the zero position through its resilience.

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

[0062] In one embodiment, as shown in Figure 4 , Figure 5 , Figure 6 and Figure 9 , Figure 11 and Figure 12As shown, the upper end of the transmission rod 21 is provided with a protrusion 211 protruding radially outward, and the rotating handle 11 is provided with a matching groove 11a, the protrusion 211 extends into the matching groove 11a, and the rotating handle 11 drives the push gear 12 to rotate from the normal state (such as Figure 11 As shown) 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 Figure 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. Moreover, after the external force applied to the rotating handle 11 disappears, the active rotating assembly 1 can reset itself by a distance of the pushing tooth groove.

[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 base 111 and a handle portion 112 . The rotating base 111 is rotatably mounted on the gun body 6 of the stapler. The push gear 12 is connected to the rotating base 111 , and the handle portion 112 is connected to the rotating base 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 , which is used to prevent the passive rotation assembly 2 from rotating when the passive rotation assembly 2 is embedded in the safety mechanism 7 .

[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 is touched, the nail magazine assembly will not swing, thereby ensuring safety in use.

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

[0070] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A direction adjustment and 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 pushing gear (12), wherein a peripheral wall of the pushing gear (12) is provided with a plurality of pushing teeth (121), and pushing tooth grooves are formed between adjacent pushing teeth (121), and the rotating handle (11) is connected to the pushing gear (12); A passive rotation assembly (2) includes 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 reset elastic member (3) is provided 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) comprises 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 the 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 until it is offset from 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 under the rebound action of the reset elastic member (3) until the push tooth (121) faces the fixed tooth (221), 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 assembly (2) has an eccentric portion (8), and the eccentric portion (8) is connected to the nail magazine assembly via the 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.

2. The direction adjustment and 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 and 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 and 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 and 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 mounted 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 and 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 radially outward, and the rotating handle (11) is provided with a matching groove (11a), and the protrusion (211) extends into the matching groove (11a). When the rotating handle (11) drives the push gear (12) to rotate from normal state to the push gear (121) staggered from the fixed gear (221), the side wall of the matching groove (11a) abuts against the protrusion (211).

7. The direction adjustment and 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), wherein the rotating seat (111) is rotatably mounted on the gun body (6) of the anastomosis device, the pushing 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 and locking device of the staple cartridge assembly according to claim 1, characterized in that: It also includes a safety mechanism (7), which is used to prevent the passive rotation component (2) from rotating when embedded in the passive rotation component (2).

9. A stapler, characterized in that: It includes the direction adjustment locking device of the nail magazine assembly according to any one of claims 1-8.

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