Staple magazine assembly and stapler

Abstract

Embodiments of the present disclosure relate to the technical field of surgical instruments, and provide a staple magazine assembly and a stapler. The staple magazine assembly comprises a staple magazine and an elastic limiting unit. A mounting hole is formed in the staple magazine, and the elastic limiting unit is mounted at the mounting hole. The elastic limiting unit comprises an elastic force transmission structure, and a trigger portion and a limiting portion which are located at two ends of the elastic force transmission structure. The trigger portion and the limiting portion are respectively arranged close to an inner end and an outer end of the mounting hole. The trigger portion is configured to be arranged on a movement path of a staple pushing member moving in a staple pushing direction thereof. The limiting portion corresponds to a set region of the outer surface of the staple magazine, wherein the set region is a region on the outer surface of the staple magazine used for opposing to a staple magazine base. In the embodiments of the present disclosure, the difficulty of loading the staple magazine assembly, in which at least some of staples have been fired, into the staple magazine base is significantly increased, thereby preventing incorrect loading of the staple magazine assembly in which at least some of the staples have been fired. The stapler comprises the staple magazine assembly.

Description

Staple cartridge assembly and stapler

[0001] Cross Reference to Related Applications

[0002] The present disclosure claims priority to the Chinese patent application No. 202421299970.1, filed on June 07, 2024, and entitled “Staple cartridge assembly and stapler”, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of surgical instruments, in particular, to a staple cartridge assembly and a stapler. BACKGROUND

[0004] A stapler is a kind of medical instrument, which is often used for tissue anastomosis and suturing in surgical operations. It includes a staple cartridge seat, a staple cartridge assembly and a staple butt, etc. The staple cartridge assembly is usually detachably connected with the staple cartridge seat, for example, installed in the slot structure of the staple cartridge seat. During the operation, the push structure such as a cutting knife pushes the pusher to move, and the anastomosis staples are fired by the pusher movement, and the fired anastomosis staples are deformed by contacting with the anastomosis forming groove on the staple butt, for example, into B-shaped, thereby completing the anastomosis operation.

[0005] It is found by observation that the staple cartridge assembly has the risk that the anastomosis staples are reloaded into the staple cartridge seat after being fired. This may delay the medical progress, or even cause a medical accident.

[0006] Content of the Utility Model

[0007] The purpose of the present disclosure includes, for example, providing a staple cartridge assembly and a stapler to improve the deficiencies in the related art.

[0008] Embodiments of the present disclosure can be implemented as follows:

[0009] The embodiment of the present disclosure provides a staple cartridge assembly, which comprises a staple cartridge and an elastic limiting unit, the staple cartridge is provided with a mounting hole, and the elastic limiting unit is mounted in the mounting hole; the elastic limiting unit comprises an elastic force transmission structure and trigger portions and limiting portions located at both ends of the elastic force transmission structure, the trigger portions and the limiting portions are respectively arranged close to the inner end and the outer end of the mounting hole, the trigger portions are arranged on the movement path of the pusher along the push direction of the pusher, and the limiting portions are arranged corresponding to the set region of the outer surface of the staple cartridge, and the set region is the region of the outer surface of the staple cartridge for relative arrangement with the staple cartridge seat.

[0010] Optionally, the trigger portions are arranged corresponding to the end limit positions of the pusher along the push direction of the pusher.

[0011] Optionally, the elastic limiting unit is a spring structure, a fixed end of the spring structure is fixed to the mounting hole, and the elastic force transmission structure, the trigger part, and the limiting part are all formed on the spring structure.

[0012] Optionally, the spring structure is integrally formed, or the spring structure is formed by connecting a plurality of springs.

[0013] Optionally, the spring structure is bent to have a first segment, a second segment, and a third segment connected in sequence, the first segment is located on a circumferential side of the mounting hole and is fixedly connected with the nail cartridge to form a fixed end of the spring structure, the second segment and the third segment are both arranged to be inclined relative to the first segment, the third segment is arranged at an angle with the second segment, and an opening direction of an angle formed by the second segment and the third segment is consistent with a hole depth direction of the mounting hole, and the third segment forms the elastic force transmission structure.

[0014] Optionally, the first segment is connected with a plug-in segment, the nail cartridge is provided with a plug-in groove, and the plug-in segment is inserted into the plug-in groove.

[0015] Optionally, an inner surface of the mounting hole is provided as a slope, and the slope is in contact with the second segment or the third segment.

[0016] Optionally, the elastic limiting unit at least includes one trigger part and one limiting part.

[0017] Optionally, the nail cartridge seat is provided with a first slot structure, the nail cartridge assembly is installed inside the first slot structure, and at least a top end of the nail cartridge assembly is exposed outside the first slot structure.

[0018] Optionally, the nail cartridge seat is provided with a first slot structure, the nail cartridge assembly is placed into the first slot structure along a set direction, and the first segment, the second segment, and the third segment are connected in sequence along the set direction.

[0019] Optionally, the nail cartridge assembly further includes a nail cartridge cover, the nail cartridge cover is detachably connected with the nail cartridge, and the nail cartridge assembly is connected with the nail cartridge seat through the nail cartridge cover.

[0020] Optionally, the nail cartridge cover is provided with a through hole, the through hole is in communication with the mounting hole, and the through hole is available for the limiting part to pass through.

[0021] Optionally, the nail cartridge assembly further includes a nail cartridge cover, the nail cartridge cover is detachably connected with the nail cartridge, the nail cartridge assembly is connected with the nail cartridge seat through the nail cartridge cover, the nail cartridge cover is provided with a through hole, the through hole is in communication with the mounting hole, the through hole is available for the limiting part to pass through, and the nail cartridge cover presses the fixed end of the spring structure against an end surface of an outer end of the mounting hole.

[0022] Optionally, the first side wall on each of the two width direction sides of the cartridge is provided with the mounting hole;

[0023] Optionally, the trigger portion and the limiting portion are both sliding members, and the sliding members are slidably mounted on the cartridge along the depth direction of the mounting hole, and the elastic force transmission structure is located in the mounting hole, and two ends of the elastic force transmission structure are respectively in abutment with the two sliding members.

[0024] Optionally, the trigger portion is provided with a guide surface, and / or the limiting portion is provided with a guide surface.

[0025] The embodiments of the present disclosure further provide an anastomat comprising the cartridge assembly described above.

[0026] Optionally, the anastomat further comprises a cartridge seat and a butt seat, the cartridge seat is detachably connected with the cartridge assembly, and the butt seat is arranged at the top end of the cartridge assembly.

[0027] Optionally, the butt seat is provided with a first forming groove, and the anastomosis nail after being fired hits the first forming groove and is deformed.

[0028] In combination with the above technical solutions, the beneficial effects brought by the embodiments of the present disclosure include, for example:

[0029] The mounting hole is arranged on the cartridge, and the elastic limiting unit is mounted at the mounting hole to realize mounting of the elastic limiting unit on the cartridge. The elastic limiting unit comprises an elastic force transmission structure and a trigger portion and a limiting portion located at two ends of the elastic force transmission structure. The trigger portion and the limiting portion are arranged close to the inner end and the outer end of the mounting hole, respectively. When the cartridge assembly is mounted on the cartridge seat of the anastomat, the limiting portion is arranged corresponding to a set region of the outer surface of the cartridge. The set region is a region of the outer surface of the cartridge for being opposite to the cartridge seat, for example, is arranged opposite to the inner wall of the first slot-shaped structure for mounting the cartridge assembly on the cartridge seat. When the pusher moves along the push direction, for example, moves from the rear to the front and contacts the trigger portion, at least part of the anastomosis needles in the cartridge are fired. The trigger portion moves outward of the cartridge by the interaction with the pusher. The elastic force transmission structure drives the limiting portion to move outward of the cartridge by the action of the trigger portion, so that the limiting portion abuts against the inner wall of the first slot-shaped structure of the cartridge seat. At this time, the potential energy of the elastic force transmission structure is large, but does not affect the normal use of the cartridge assembly on the cartridge seat, and the cartridge assembly can be normally dismounted from the cartridge seat. If the cartridge assembly is dismounted from the cartridge seat, the abutting action of the cartridge seat on the limiting portion is released. Under the action of the potential energy of the elastic force transmission structure, the limiting portion moves outward of the cartridge, so that the size of the cartridge assembly at the limiting portion is large, and a stop is substantially formed. Specifically, a block is formed when the cartridge assembly in this state is mounted into the cartridge seat again. That is, the difficulty of mounting the cartridge assembly in which at least part of the anastomosis needles are fired into the cartridge seat is greatly increased, so that the cartridge assembly in which at least part of the anastomosis needles are fired can be prevented from being mistakenly mounted to a certain extent.

[0030] The anastomat of the present disclosure comprises the cartridge assembly described above, and has all the beneficial effects of the cartridge assembly. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the specific embodiments of the present disclosure or the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art without creative labor.

[0032] FIG. 1 is an exploded schematic view of the cartridge assembly in the embodiment of the present disclosure;

[0033] FIG. 2 is a schematic view of the upper half of the cartridge in the cartridge assembly in the embodiment of the present disclosure after the elastic limiting unit is cut off and exposed;

[0034] FIG. 3 is a schematic view of the cartridge assembly in the embodiment of the present disclosure mounted in the first slot-shaped structure of the cartridge seat of the anastomat;

[0035] Fig. 4 is a structural schematic diagram of the anastomat from another perspective corresponding to Fig. 3;

[0036] Fig. 5 is an exploded schematic diagram of the anastomat when the pusher is about to contact the trigger part of the elastic limiting unit in the embodiment of the present disclosure;

[0037] Fig. 6 is a schematic diagram of the limiting part of the elastic limiting unit clamping on the staple cartridge seat in the embodiment of the present disclosure.

[0038] Fig. 1: staple cartridge assembly; 11: staple cartridge; 111: mounting hole; 112: first side wall; 113: slot; 114: setting area; 12: elastic limiting unit; 121: trigger part; 122: limiting part; 123: elastic force transmission structure; 12a: first section; 12b: second section; 12c: third section; 12d: plug-in section; 13: pusher; 14: staple cartridge cover; 141: via hole; 2: staple cartridge seat; 21: first slot structure; 3: staple abutting seat. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific embodiments of the present disclosure will be described in detail below with reference to the drawings.

[0040] In the description of the present disclosure, it should be noted that unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connection" appear, they should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0041] In the description of the present disclosure, if the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" appear, it means that the specific features, structures, materials or characteristics described in connection with the embodiment or embodiment are included in at least one embodiment or embodiment of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.

[0042] If the terms "first", "second", etc. appear, they are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features.

[0043] The Z-axis in the drawings of the present disclosure represents the vertical direction, i.e., the up-down position, and the positive direction of the Z-axis, i.e., the arrow direction of the Z-axis, represents up, and the negative direction of the Z-axis represents down; the X-axis in the drawings represents the front-rear position, and the positive direction of the X-axis, i.e., the arrow direction of the X-axis, represents the front side, and the negative direction of the X-axis represents the rear side; the Y-axis in the drawings represents the horizontal direction and is designated as the left-right position, and the positive direction of the Y-axis, i.e., the arrow direction of the Y-axis, represents the right side, and the negative direction of the Y-axis represents the left side; it should be noted that the above-mentioned meanings of the Z-axis, Y-axis and X-axis are only for the convenience of describing the present disclosure and simplifying the description, and are not indicative or suggestive of the devices or elements referred to necessarily having a specific orientation, being constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0044] As shown in FIGS. 1-6, the embodiment of the present disclosure provides a staple cartridge assembly 1, which comprises a staple cartridge 11 and an elastic limiting unit 12, the staple cartridge 11 is provided with a mounting hole 111, and the elastic limiting unit 12 is mounted at the mounting hole 111; the elastic limiting unit 12 comprises an elastic force transmission structure 123 and a trigger portion 121 and a limiting portion 122 located at both ends of the elastic force transmission structure 123, the trigger portion 121 is close to the inner end of the mounting hole 111, and the limiting portion 122 is close to the outer end of the mounting hole 111, the trigger portion 121 is arranged on the movement path of the pusher 13 in the push direction of the pusher 13, and the limiting portion 122 is arranged in a set region 114, the set region 114 is a region where the staple cartridge 11 and the staple cartridge seat 2 are spaced apart and located outside the staple cartridge 11.

[0045] In the present disclosure, the staple cartridge assembly 1 can be applied to a stapler, which comprises a staple cartridge seat 2 at the front end and a butt seat 3, the butt seat 3 and the staple cartridge seat 2 can move relatively to realize opening and closing.

[0046] The staple cartridge assembly 1 is mounted on the staple cartridge seat 2, for example, the staple cartridge seat 2 has a first slot-shaped structure 21, the staple cartridge assembly 1 is mounted inside the first slot-shaped structure 21, and at least the top end of the staple cartridge assembly 1 is exposed outside the first slot-shaped structure 21, so that the subsequent anastomosis staples can be pushed out from the top end of the staple cartridge assembly 1, and the anastomosis staples pushed out are in contact with the butt seat 3.

[0047] The push direction of the pusher 13 is from back to front, in actual use, the stapler is inserted into a predetermined operating position, the butt seat 3 and the staple cartridge seat 2 are closed and press the tissue to be sutured, under the action of a cutting knife for example, the pusher 13 moves from back to front, driving the anastomosis staples to be fired in sequence from back to front, for example, upward, the anastomosis staples after firing hit the first forming groove (not shown in the figure) on the butt seat 3, the anastomosis staples are deformed to suture the tissue to be sutured, for example, the anastomosis staples can be deformed into B shape.

[0048] It should be noted that the initial limit position of the pusher 13 is located at the rear end of the cartridge 11, the pusher 13 is spaced from the trigger portion 121, and the limiting portion 122 remains in the original state and does not move to the outside of the cartridge 11, that is, the limiting portion 122 is spaced from the cartridge seat 2, and the cartridge assembly 1 can be smoothly loaded into the first slot structure 21 of the cartridge seat 2.

[0049] In the present disclosure, the mounting hole 111 can be provided on the first side wall 112 of the cartridge 11, and the mounting hole 111 can also be provided on the bottom plate of the cartridge 11, which is not limited.

[0050] The trigger portion 121 of the elastic limiting unit 12 is close to the inner end of the mounting hole 111, for example, the trigger portion 121 is provided inside the mounting hole 111 and away from the outer end of the mounting hole 111, and the trigger portion 121 is located on the pusher movement path of the pusher 13. The limiting portion 122 of the elastic limiting unit 12 is close to the outer end of the mounting hole 111, for example, the limiting portion 122 is provided in the set region 114.

[0051] The specific structure of the elastic limiting unit 12 is not limited, as long as it includes the elastic force transmission structure 123 and the trigger portion 121 and the limiting portion 122 located at both ends of the elastic force transmission structure 123, the elastic force transmission structure 123 connects the trigger portion 121 and the limiting portion 122, and the elastic force transmission structure 123 transmits the force between the trigger portion 121 and the limiting portion 122. For example, the limiting portion 122 is not blocked in the left-right direction, the trigger portion 121 is pressed in the left-right direction, and the elastic force transmission structure 123 can transmit the pressure to the limiting portion 122 and make the limiting portion 122 move; or the trigger portion 121 is not blocked in the left-right direction, the limiting portion 122 is pressed in the left-right direction, and the elastic force transmission structure 123 can transmit the pressure to the trigger portion 121 and make the trigger portion 121 move. For another example, the limiting portion 122 is blocked in the left-right direction, the trigger portion 121 is pressed in the left-right direction, and the elastic force transmission structure 123 deforms to accumulate energy in potential energy, and the distance between the limiting portion 122 and the trigger portion 121 in the left-right direction is reduced; or the trigger portion 121 is blocked in the left-right direction, the limiting portion 122 is pressed in the left-right direction, and the elastic force transmission structure 123 deforms to accumulate energy in potential energy, and the distance between the limiting portion 122 and the trigger portion 121 in the left-right direction is reduced. When

[0052] The pusher 13 is pushed to move along its pusher path, for example, from rear to front to contact the trigger portion 121, at least part of the staples in the cartridge 11 are fired, the trigger portion 121 moves to the outside of the cartridge 11 under the pushing action of the pusher 13, the elastic force transmission structure 123 drives the limiting portion 122 to move to the outside of the cartridge 11, and the limiting portion 122 abuts against the inner wall of the first slot structure 21. At this time, the cartridge assembly 1 can be normally detached from the cartridge seat 2.

[0053] When the staple cartridge assembly 1 is detached from the staple cartridge seat 2, the resistance of the staple cartridge seat 2 to the limiting portion 122 is removed, and under the potential energy of the elastic force transmission structure 123, the limiting portion 122 moves outwardly of the staple cartridge 11, so that the size of the staple cartridge assembly 1 increases, forming a stop state, specifically, the staple cartridge assembly 1 cannot be reloaded into the staple cartridge seat 2 in the stop state, thereby preventing the misloading of the staple cartridge assembly 1.

[0054] Optionally, the trigger portion 121 is arranged at the end limit position of the pusher 13 along the pusher path thereof.

[0055] The staple cartridge assembly 1 of the present embodiment includes only one elastic limiting unit 12, the elastic limiting unit 12 includes only one trigger portion 121 and one limiting portion 122, and the position of the mounting hole 111 corresponds to the end limit position of the pusher 13.

[0056] However, it should be understood that the number of mounting holes 111 can also be set to be multiple, and the number of elastic limiting units 12 can be correspondingly set to be multiple. Alternatively, the elastic limiting unit 12 can include multiple trigger portions 121, multiple elastic force transmission structures 123, and multiple limiting portions 122. The pusher 13 completes the firing of different numbers of anastomosis staples, and the pusher 13 is located at different positions, which can trigger the corresponding trigger portion 121 to move the corresponding limiting portion 122, thereby preventing the misloading operation on the detached staple cartridge assembly 1.

[0057] It should be understood that the end limit position of the pusher 13 is the position where the pusher 13 is located at the most front end of the staple cartridge 11, and when the pusher 13 is located at the end limit position, all the anastomosis staples in the staple cartridge 11 have been fired, that is, the staple cartridge 11 is in an empty cartridge state.

[0058] After the staple cartridge assembly 1 is detached from the staple cartridge seat 2, the limiting portion 122 of the elastic limiting unit 12 extends from the mounting hole 111 to prevent the misloading of the already empty staple cartridge assembly 1, avoid the assembly of the empty staple cartridge assembly 1 to the staple cartridge seat 2, and avoid causing adverse effects.

[0059] Optionally, the staple cartridge assembly 1 further includes a staple cartridge cover 14, the staple cartridge cover 14 is detachably connected with the staple cartridge 11, the staple cartridge cover 14 is connected with the staple cartridge seat 2, the staple cartridge cover 14 is provided with a through hole 141, the through hole 141 is in communication with the mounting hole 111, and the through hole 141 is for the limiting portion 122 to pass through.

[0060] The detachable connection between the staple cartridge cover 14 and the staple cartridge 11 can be a clamping connection, and the staple cartridge assembly 1 is connected with the first slot-shaped structure 21 of the staple cartridge seat 2 through the staple cartridge cover 14, for example, the connection mode is a clamping connection, and the specific connection mode thereof can adopt related technologies, for example, the related technologies of the applicant of the present disclosure before the application date, which will not be described in detail here.

[0061] The bottom of the cartridge 11 can be protected by the cartridge cover 14, and the limiting portion 122 can move smoothly to the outside of the cartridge 11, for example, in the left-right direction and abut against the inner wall of the first slot-shaped structure 21.

[0062] Alternatively, the elastic limiting unit 12 is a spring structure, the fixed end of the spring structure is fixed to the mounting hole 111, and the spring structure further includes the limiting portion 122, the elastic force transmission structure 123, and the trigger portion 121 connected in sequence, and the limiting portion 122 is arranged in the mounting hole 111. The elastic limiting unit 12 has a simple structure and high reliability.

[0063] Specifically, the spring structure can be formed by one spring or by multiple springs connected together, which is not limited, as long as it can meet the use requirements.

[0064] As shown in FIG. 2, alternatively, the spring structure is bent to form the first segment 12a, the second segment 12b, and the third segment 12c connected in sequence, the first segment 12a is fixedly connected to the cartridge 11 on one side of the circumference of the mounting hole 111 to form the fixed end of the spring structure, the second segment 12b and the third segment 12c are respectively arranged obliquely relative to the first segment 12a, the third segment 12c is arranged at an angle with the second segment 12b, the opening direction of the angle formed by the second segment 12b and the third segment 12c faces the mounting hole 111, and the third segment 12c forms the elastic force transmission structure 123.

[0065] As shown in FIG. 2, alternatively, the spring structure is attached to the cartridge 11 at the first segment 12a, so as to realize that the fixed end of the spring structure is fixed to the cartridge 11, the limiting portion 122 is arranged at one end of the third segment 12c close to the outside of the mounting hole 111, the trigger portion 121 is arranged at one end of the third segment 12c close to the inside of the mounting hole 111, and the second segment 12b is arranged obliquely relative to the first segment 12a.

[0066] The single spring is bent to form the elastic limiting unit 12, without the need to use multiple components to form the elastic limiting unit 12, so that the third segment 12c as a whole can move relative to the first segment 12a and be reset by the second segment 12b, for example, one end of the third segment 12c close to the second segment 12b can move in the depth direction of the mounting hole 111, that is, the left-right direction, and be reset. The third segment 12c is arranged obliquely relative to the first segment 12a, so that the trigger portion 121 and the limiting portion 122 of the third segment 12c can move relatively and accumulate potential energy to a certain extent through the deformation of the third segment 12c, the relative positions of the trigger portion 121 and the limiting portion 122 can be reset by the deformation of the third segment 12c itself, so that the structure is simple and practical.

[0067] Optionally, the first section 12a is connected with a plug-in section 12d, the staple cartridge 11 is provided with a slot 113, and the plug-in section 12d is inserted into the slot 113.

[0068] Optionally, the first section 12a is bent at an end away from the second section 12b to form the plug-in section, and the depth direction of the slot 113 can be consistent with the depth direction of the mounting hole 111. As shown in FIGS. 1, 2 and 5, the first section 12a is bent at an end away from the second section 12b to form the plug-in section.

[0069] Through the plug-in connection of the plug-in section 12d and the slot 113, the reliability of the connection between the fixed end of the spring sheet structure and the staple cartridge 11 can be improved.

[0070] It should be understood that one or more of the trigger portion 121 and the limiting portion 122 can be provided with a guide surface as needed, and the guide surface is configured to contact and guide, for example, one or more of the trigger portion 121 and the limiting portion 122 can be provided as a ball convex structure, so that when the pusher 13 contacts the trigger portion 121, the two can be prevented from scratching to avoid damage to the contact surface, and when the limiting portion 122 contacts the staple cartridge seat 2, the two can be prevented from scratching to avoid damage to the contact surface, thereby improving the service life of the pusher 13 and the elastic limiting unit 12, reducing the possibility of abnormal noise and debris caused by scratching.

[0071] In this embodiment, the staple cartridge seat 2 is provided with a first slot structure 21, the staple cartridge assembly 1 can be placed in the first slot structure 21 along a set direction, and the first section 12a, the second section 12b and the third section 12c are connected in sequence along the set direction.

[0072] The set direction is from front to back, specifically, the staple cartridge assembly 1 moves from front to back to be placed in the first slot structure 21, and the first section 12a, the second section 12b and the third section 12c are sequentially distributed from front to back. As shown in FIGS. 2 and 6, one end of the third section 12c forms the limiting portion 122, and the other end forms the trigger portion 121. If the staple cartridge assembly 1 needs to be pushed into the first slot structure 21 from front to back, the limiting portion 122 at the end of the third section 12c protrudes beyond the outer surface of the staple cartridge assembly 1 in the left-right direction, for example, beyond the outer surface of the staple cartridge cover 14, and the front end face of the first slot structure 21 of the staple cartridge seat 2 will abut against the limiting portion 122. As the staple cartridge assembly 1 is pushed from front to back, the limiting portion 122 has a tendency to be stressed and move forward, and at least initially has a tendency to expand outward, making it more difficult to push the staple cartridge assembly 1 into the first slot structure 21 from front to back, thereby achieving a better anti-misloading effect.

[0073] In this embodiment, the staple cartridge cover 14 can press the fixed end of the spring sheet structure against the end face at the outer end of the mounting hole 111.

[0074] As shown in FIG. 2, the inner surface of the staple cartridge cover 14 along the left-right direction presses the first section 12a against the end face of the outer end of the mounting hole 111, and keeps the insertion section 12d in the insertion state with the insertion slot 113, thereby ensuring the reliability of the connection between the leaf spring structure and the staple cartridge 11.

[0075] It should be understood that the end face of the staple cartridge 11 at the outer end of the mounting hole 111 can be provided with a receiving groove capable of accommodating the leaf spring structure, for example, a receiving groove accommodating the first section 12a.

[0076] Alternatively, the inner surface of the mounting hole 111 can be provided with a slope along the direction in which the first section 12a, the second section 12b and the third section 12c are sequentially distributed, and the limit position of the second section 12b or the third section 12c is defined by the contact between the slope and the second section 12b or the third section 12c.

[0077] In the embodiment, the first side wall 112 of the staple cartridge 11 along the width direction is provided with the mounting hole 111. For example, two mounting holes 111 are symmetrically arranged in the left-right direction, and when preventing misinstallation, the left and right sides of the staple cartridge assembly 1 can be hindered by the two limiting portions 122, the force balance is achieved, the damage of the staple cartridge assembly 1 caused by the uneven force on the left and right sides is avoided, and the reliability is high.

[0078] It should be understood that the structure of the elastic limiting unit 12 is exemplarily described above, but it is not limited thereto.

[0079] Alternatively, in the scheme of the leaf spring structure, the end of the second section 12b away from the first section 12a can be connected between the front and rear ends of the third section 12c.

[0080] Alternatively, the trigger portion 121 and the limiting portion 122 can be sliding members which can slide along the depth direction (for example, the left-right direction) of the mounting hole 111 to be installed on the staple cartridge 11, and the elastic force transmission structure 123 (for example, a leaf spring or a compression spring) is located between the sliding member where the trigger portion 121 is located and the sliding member where the limiting portion 122 is located, the transmission of the acting force between the two is achieved by the elastic force transmission structure 123, and the limit positions of the sliding of the trigger portion 121 and the limiting portion 122 should be defined.

[0081] The present disclosure further provides an anastomat comprising the staple cartridge assembly 1 as described above, which can be applied to the suturing of tissues in abdominal surgery, thoracic surgery, etc., and the application range of the anastomat is not limited. The anastomat has all the beneficial effects of the staple cartridge assembly 1. Industrial applicability

[0082] In summary, the present disclosure provides a staple cartridge assembly and an anastomat, which have simple overall structure, low cost, and can prevent misinstallation of the staple cartridge assembly with partially fired anastomosis staples.

[0083] Although the present disclosure is disclosed as above, the scope of protection of the present disclosure is not limited to this. Those skilled in the art, without departing from the spirit and scope of the present disclosure, can make various changes and modifications, which will fall within the scope of protection of the present disclosure.

Claims

1. A staple cartridge assembly, characterized in that, The cartridge (11) is provided with a mounting hole (111), and the elastic limiting unit (12) is mounted at the mounting hole (111); the elastic limiting unit (12) comprises an elastic force transmission structure (123) and a trigger portion (121) and a limiting portion (122) located at both ends of the elastic force transmission structure (123), the trigger portion (121) and the limiting portion (122) are arranged close to the inner end and the outer end of the mounting hole (111) respectively, the trigger portion (121) is arranged on the movement path of the pusher (13) in the pusher direction, and the limiting portion (122) is arranged on the set region of the outer surface of the cartridge (11).

2. The cartridge assembly of Claim 1, wherein, The cartridge (11) is provided with the trigger portion (121) at the end limit position of the movement of the pusher (13) in the pusher direction.

3. The cartridge assembly of Claim 1 or 2, wherein, The elastic limiting unit (12) is a spring structure, the fixed end of the spring structure is fixed to the mounting hole (111), and the elastic force transmission structure (123), the trigger portion (121) and the limiting portion (122) are all formed on the spring structure.

4. The cartridge assembly of Claim 3, wherein, The spring structure is integrally formed, or the spring structure is formed by connecting a plurality of springs.

5. The cartridge assembly of Claim 3 or 4, wherein, The spring structure is bent to form a first section (12a), a second section (12b) and a third section (12c) connected in sequence, the first section (12a) is located on the circumferential side of the mounting hole (111) and is fixedly connected with the cartridge (11) to form the fixed end of the spring structure. The second section (12b) and the third section (12c) are both inclined relative to the first section (12a), the third section (12c) is arranged at an angle with the second section (12b), the opening direction of the angle formed by the second section (12b) and the third section (12c) is consistent with the hole depth direction of the mounting hole (111), and the third section (12c) forms the elastic force transmission structure (123).

6. The cartridge assembly of Claim 5, wherein, The first section (12a) is connected with a plug-in section (12d), the cartridge (11) is provided with a plug groove (113), and the plug-in section (12d) is inserted into the plug groove (113).

7. The cartridge assembly of Claim 5 or 6, wherein, The inner surface of the mounting hole (111) is provided as an inclined surface, and the inclined surface is in contact with the second section (12b) or the third section (12c).

8. The cartridge assembly of any one of Claims 1-7, wherein, The elastic limiting unit (12) comprises at least one trigger portion (121) and one limiting portion (122).

9. The cartridge assembly of any one of Claims 1-8, wherein, The cartridge seat (2) is provided with a first slot structure (21), the cartridge assembly is mounted in the inside of the first slot structure (21), and the cartridge assembly is at least exposed at the top of the first slot structure (21).

10. The cartridge assembly of Claim 5 or 6, wherein, The staple cartridge seat (2) is provided with a first slot structure (21), the staple cartridge assembly is placed in the first slot structure (21) along a set direction, and the first section (12a), the second section (12b) and the third section (12c) are sequentially connected along the set direction.

11. The cartridge assembly of any one of Claims 1-10, wherein, The staple cartridge assembly further comprises a staple cartridge cover (14) which is detachably connected with the staple cartridge (11), and the staple cartridge assembly is connected with the staple cartridge seat (2) through the staple cartridge cover (14).

12. The cartridge assembly of Claim 11, wherein, The staple cartridge cover (14) is provided with a through hole (141) which communicates with the mounting hole (111) and through which the limiting portion (122) passes.

13. The cartridge assembly of any one of Claims 3-7, wherein, The staple cartridge assembly further comprises a staple cartridge cover (14) which is detachably connected with the staple cartridge (11), and the staple cartridge assembly is connected with the staple cartridge seat (2) through the staple cartridge cover (14), the staple cartridge cover (14) is provided with a through hole (141) which communicates with the mounting hole (111) and through which the limiting portion (122) passes, and the staple cartridge cover (14) presses the fixed end of the spring piece structure against the end face of the outer end of the mounting hole (111).

14. The cartridge assembly of any of Claims 1-13, wherein, The first side wall (112) on each of the two width direction sides of the staple cartridge (11) is provided with the mounting hole (111); And / or, the trigger portion (121) and the limiting portion (122) are sliding members which are slidably mounted on the staple cartridge (11) along the depth direction of the mounting hole (111), and the elastic force transmission structure (123) is located in the mounting hole (111) and has two ends which respectively abut against the two sliding members.

15. The cartridge assembly of any one of Claims 1-14, wherein, The trigger portion (121) is provided with a guide surface, and / or the limiting portion (122) is provided with a guide surface.

16. An anastomosis device, comprising: The anastomat further comprises a staple cartridge seat (2) and a staple receiving seat (3), the staple cartridge seat (2) is detachably connected with the staple cartridge assembly, and the staple receiving seat (3) is arranged at the top end of the staple cartridge assembly.

17. The anastomosis device according to claim 16, wherein The staple receiving seat (3) is provided with a first shaped groove, and the anastomosis nails after being struck by the first shaped groove are deformed.

18. The anastomosis device according to claim 16 or 17, characterized in that The staple cartridge seat (2) is provided with a first slot structure (21), the staple cartridge assembly is placed in the first slot structure (21) along a set direction, and the first section (12a), the second section (12b) and the third section (12c) are sequentially connected along the set direction.

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