Staple magazine, staple magazine assembly and surgical stapler

Abstract

Staple magazine, characterized in that the staple magazine is designed with a feed groove (113) and several staple groove groups (114), wherein the feed groove (113) extends along a first predetermined direction and is configured such that a cutting edge passes through the feed groove, and wherein each of the staple groove groups (114) comprises several staple grooves (1141) distributed along the first predetermined direction, and wherein the staple groove (1141) is configured for mounting a staple (4), and wherein the several staple groove groups (114) are spaced apart along the groove width direction of the feed groove (113), and wherein at least one staple groove group (114) is distributed on both sides of the feed groove (113) in the groove width direction, and wherein the number of staple groove groups (114) on both sides of the feed groove (113) is different in the groove width direction.

Description

Cross-references to related applications

[0001] This disclosure claims priority to Chinese Patent Application No. 2024212999839, filed on June 7, 2024, in the Chinese Patent Office, entitled "Staple Cartridge, Staple Cartridge Assembly, and Surgical Stapler," the entire disclosure of which is incorporated herein by reference. Technical area

[0002] This application relates to the technical field of medical instruments, in particular to a staple cartridge, a staple cartridge assembly and a surgical stapler. Technical background

[0003] A surgical stapler is a medical device commonly used for tissue anastomosis in surgical operations. The surgical stapler includes components such as a staple cartridge assembly and a counter socket. During surgery, a cutting blade drives a pushing element, and the sliding movement of the pushing element activates the staples in the staple cartridge of the staple cartridge assembly. The activated staples pierce the tissue and deform through mutual action with the counter socket, thus completing the anastomosis process. At the same time, the cutting action is performed by the cutting blade. Typically, the end of the tissue to be retained and the end of the tissue to be cut are located on either side of the path of the cutting blade, and the two ends of the tissue are anastomosed with the staples.

[0004] However, when using the prior art staple for the anastomosis procedure, situations have occurred in which poor anastomosis and increased bleeding are caused at the end of the tissue to be preserved, while excessive anastomosis is caused at the end of the tissue to be cut. Subject of the utility model

[0005] Given this background, the purpose of the present application is to provide a staple cartridge, a staple cartridge assembly and a surgical stapler aimed at improving the situations caused by the prior art surgical stapler in which a poor anastomosis and increased bleeding are caused at the end of the tissue to be preserved, while an excessive anastomosis is caused at the end of the tissue to be cut.

[0006] To achieve the above-mentioned objectives, the following technical solution is provided in this application: In a first aspect, an embodiment of the present application proposes a staple magazine. The staple magazine is formed with a feed groove and a plurality of staple groove groups, wherein the feed groove extends along a first predetermined direction and is configured such that a cutting edge passes through the feed groove, and wherein each staple groove group comprises a plurality of staple grooves distributed along the first predetermined direction, and wherein the staple groove is configured for mounting a staple, and wherein the plurality of staple groove groups are arranged at a distance along the groove width direction of the feed groove, and wherein at least one staple groove group is distributed on both sides of the feed groove in the groove width direction, and wherein the number of staple groove groups on both sides of the feed groove is different in the groove width direction.

[0007] In an optional embodiment, the feed groove extends along a straight line, wherein one end of the feed groove is provided with a first opening, and wherein the first opening is configured such that the cutting edge enters the feed groove via the first opening along the first predetermined direction.

[0008] In an optional embodiment, the plurality of clamp groove groups are distributed at equal distances on the same side of the feed groove.

[0009] In an optional embodiment, the clamp grooves of the two adjacent clamp groove groups are arranged offset from one another on the same side of the feed groove.

[0010] In an optional embodiment, the number of clamp groove groups on any side of the feed groove in the groove width direction is in any case greater than or equal to two.

[0011] In an optional embodiment, a difference between the numbers of the clamp groove groups on both sides of the feed groove in the groove width direction is less than or equal to two.

[0012] In an optional embodiment, the feed groove and the staple groove run along a second predetermined direction through the staple magazine, which second predetermined direction is perpendicular to the first predetermined direction orthe groove width direction, wherein the staple magazine has a first side and an opposite second side in the second predetermined direction, and wherein the opening of the staple groove formed on the first side of the staple magazine is configured such that a front end of the actuated staple protrudes from the opening, and wherein a plurality of staple pushing grooves are provided on the second side of the staple magazine and extend along the first predetermined direction, and wherein the staple pushing groove is arranged between two adjacent staple groove groups on the same side of the feed groove and connected in the groove width direction to the staple grooves of the two adjacent staple groove groups, and wherein the staple pushing groove is configured such that the pushing member is at least partially inserted into the staple pushing groove to push the staple in the staple groove toward the first side of the staple magazine.

[0013] In an optional embodiment, a second opening is provided at one end of the clip sliding groove, the second opening being configured such that the sliding element passes through the second opening in the first predetermined direction.

[0014] In an optional embodiment, a guide groove extending along the first predetermined direction is provided on the second side of the staple magazine, the guide groove being configured such that the guide groove is slidably fitted with a guide portion of the sliding member.

[0015] In a second aspect, an embodiment of the present application proposes a staple cartridge assembly comprising a sliding member and a staple cartridge according to any embodiment in the above first aspect, wherein the sliding member is configured to allow the sliding member to move relative to the staple cartridge to actuate the staple in the staple groove of the staple cartridge.

[0016] In an optional embodiment, the feed groove and the staple groove extend along a second predetermined direction through the staple magazine, which second predetermined direction is perpendicular to the first predetermined direction or the groove width direction, wherein the staple magazine has a first side and an opposite second side in the second predetermined direction, and wherein the opening of the staple groove formed on the first side of the staple magazine is configured such that a front end of the actuated staple protrudes from the opening, and wherein a plurality of staple pushing grooves are provided on the second side of the staple magazine, which extend along the first predetermined direction, and wherein the staple pushing groove is located between the two adjacent staple groove groups on the same side of the feed groove and is connected in the groove width direction to the staple grooves of the two adjacent staple groove groups, and wherein the sliding element is arranged on the second side of the staple magazine, and wherein the sliding element projects at least partially into the staple sliding groove and is movable along the staple sliding groove in order to push the staple in the staple groove towards the first side of the staple magazine.

[0017] In an optional embodiment, the sliding element comprises a plurality of staple sliding plates arranged at a distance along the groove width direction, wherein the number of staple sliding plates is equal to the number of staple sliding grooves, and wherein the staple sliding plates are uniquely inserted into the staple sliding grooves.

[0018] In an optional embodiment, a guide surface is provided at an end of the staple pushing plate located in the first predetermined direction, wherein the guide surface is formed obliquely to the first predetermined direction and inclined towards the second side of the staple magazine, and wherein the guide surface is configured such that upon movement of the guide surface in the first predetermined direction, the staple is pushed by the guide surface towards the first side of the staple magazine.

[0019] In an optional embodiment, a guide groove is provided on the second side of the staple magazine, which guide groove extends along the first predetermined direction, wherein the sliding element further comprises a guide portion, and wherein the guide groove is slidably fitted with the guide portion of the sliding element.

[0020] In an optional embodiment, the staple cartridge assembly further comprises a staple seat and a staple, wherein the staple seat is received in the staple groove and the staple pushing groove, and wherein the staple seat comprises two interconnected sub-staple seats, and wherein the two sub-staple seats are each slidably fitted with the staple grooves in two adjacent staple groove groups so that the staple seat is movable relative to the staple cartridge in the second predetermined direction, and wherein a staple is arranged at the end of the respective sub-staple seat facing the first side of the staple cartridge.

[0021] In an optional embodiment, the sliding element is configured such that the sliding element is movable relative to the staple magazine in the first predetermined direction, wherein the staple magazine assembly further comprises an elastic limiting unit, and wherein an installation hole is provided on the staple magazine, and wherein the elastic limiting unit is mounted on the installation hole, and wherein the elastic limiting unit comprises an elastic force transmission structure, a triggering section and a limiting section, which triggering section and which limiting section are located at both ends of the elastic force transmission structure, and wherein the triggering section and the limiting section are each located near the inner and outer ends of the staple magazine.outer end of the installation hole, and wherein the trigger portion is located in a movement path of the sliding element for pushing the staple along the first predetermined direction, and wherein the elastic limiting unit is configured to be subjected to elastic deformation when the trigger portion is pushed by the sliding element, whereby the trigger portion retreats from the movement path for pushing the staple, and wherein the elastic force transmission structure is configured to exert an elastic driving force on a limiting portion when the trigger portion retreats from the movement path for pushing the staple, so that the limiting portion protrudes beyond the outer end of the installation hole.

[0022] In an optional embodiment, the staple magazine is provided with the trigger section at a limit position at the end of the movement path of the pushing element used for pushing the staple, and / or wherein the elastic limiting unit has a spring plate structure, and wherein a fixed end of the spring plate structure is fixed to the edge of the installation hole, and wherein the elastic force transmission structure, the trigger portion, and the limiting portion are all formed on the spring plate structure.

[0023] In an optional embodiment, by bending the spring plate structure, a first section, a second section and a third section are formed, which are connected sequentially one after the other, wherein the first section forms the attached end of the spring plate structure and is fixedly connected to the staple magazine, and wherein the second section and the third section are each arranged inclined to the first section, and wherein the third section is arranged obliquely to the second section, and wherein the opening direction of the angle formed by the second section and the third section corresponds to the direction of the depth of the installation hole, and wherein the connecting section between the second section and the third section forms the triggering section, and wherein the third section forms the elastic force transmission structure.

[0024] In an optional embodiment, the staple magazine assembly further comprises a staple magazine cover detachably connected to the staple magazine, wherein the staple magazine cover forms a receiving space, and wherein the staple magazine is arranged in the receiving space of the staple magazine cover, and wherein the staple magazine cover is provided with a through hole fluidly connected to the installation hole and configured for the passage of the restriction portion, and wherein the inner wall of the staple magazine cover and the outer wall of the staple magazine clamp the attached end of the spring plate structure.

[0025] In a third aspect, an embodiment of the present application proposes a surgical stapler, the surgical stapler comprising a staple cartridge assembly according to any embodiment in the above second aspect.

[0026] The positive effects of this application are: Compared with the prior art, the feeding groove of the staple cartridge proposed in the embodiments of the present application extends along the first predetermined direction, and the feeding groove is configured so that the cutting edge passes through the feeding groove. When the staple cartridge is used with a surgical stapler, particularly when the surgical stapler clamps the tissue to be operated through the counter socket and the staple cartridge, the cutting edge can perform cutting operations via the feeding groove. At the same time, a plurality of staple groove groups are distributed on both sides of the feeding groove along the width direction of the feeding groove, and the number of staple groove groups on both sides of the feeding groove is different, so that the strength and the width of the anastomosis on both sides of the feeding groove are different along the width direction.This allows the strength of the anastomosis to be specifically increased on the side where the number of staple groove groups is larger. This allows the different anastomotic requirements for the end of the tissue to be cut and the end of the tissue to be retained to be met. More specifically, the side with a larger number of staple groove groups corresponds to the end of the tissue to be retained, while a side with a smaller number of staple groove groups corresponds to the end of the tissue to be cut. This can meet the anastomosis requirement at the end of the tissue to be retained, improve the effect of the anastomosis at the end of the tissue to be retained, and reduce bleeding at the end of the tissue to be retained. The problems of excessive anastomosis and staple waste caused by excessive staples at the end of the tissue to be cut are also improved. Overall, the staple cartridge in embodiments of the present application has been found to advantageously improve the staple utilization rate, reduce bleeding at the end of the tissue to be retained, and increase the effect of the anastomosis at the end of the tissue to be retained. Description of drawings

[0027] To further explain the technical solutions of the embodiments of this application, the drawings used in the embodiments are briefly presented below. It should be understood that the following drawings represent only some of the embodiments of this application and are therefore not to be considered as limitations of scope. A person skilled in the art can obtain further relevant drawings based on these drawings without inventive activity. Fig. 1 is a schematic representation of a surgical stapler in one embodiment of the present application; Fig. 2 is a schematic diagram for the assembly of a staple cartridge base, a staple cartridge assembly, and a counter base in one embodiment of the present application; Fig. 3 is a schematic exploded view of a staple cartridge base, a staple cartridge assembly, and a counter base in one embodiment of the present application; Fig. 4 is a schematic section of the second side of the staple magazine in an embodiment of the present application; Fig. 5 is a schematic illustration of contact of a sliding member with a plurality of staple seats for sliding staples in an embodiment of the present application; Fig. 6 is a schematic diagram of a structure of a sliding member in an embodiment of the present application; Fig. 7 is a schematic structural diagram of a staple cartridge assembly 1 in an embodiment of the present application, in which the staple cartridge assembly 1 further includes an elastic limiting unit 12; Fig. 8 is a schematic diagram showing the arrangement of an elastic limiting unit in an embodiment of the present application; Fig. 9 is a schematic section of the counter socket in an embodiment of the present application; Fig. 10 is a schematic diagram for the assembly of a protective component of a staple cartridge assembly in one embodiment of the present application. Reference symbol:

[0028] 1-staple magazine assembly; 11-staple magazine; 111-installation hole; 112-first side wall; 113-feed groove; 1131-first opening; 114-staple groove group; 1141-staple groove; 115-insertion groove; 116-staple pushing groove; 1161-second opening; 117-guide groove; 12-elastic limiting unit; 121-release portion; 122-limiting portion; 123-elastic force transmission structure; 12a-first portion; 12b-second portion; 12c-third portion; 12d-insertion portion; 13-sliding member; 131-staple pushing plate; 1311-guide surface; 132-guide portion; 14-staple magazine cover; 141-through hole; 15-staple seat; 151 sub-staple seat; 16-protective component; 161-snap section; 2-staple magazine base; 21-groove-shaped structure; 3-counter base; 31-forming groove; 311 groove; 4-staple. Detailed description of embodiments

[0029] The following describes in detail the embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals from beginning to end represent identical or similar elements or elements with identical or similar functions. The following embodiments described with reference to the drawings are exemplary and serve only to explain the present disclosure and should not be construed as limiting the present disclosure.

[0030] In describing the present disclosure, it is understood that terms such as "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are to be understood as referring to the orientation or position shown in the accompanying drawings. These terms are for convenience of description only and do not indicate or imply that the device or element concerned must have a particular orientation or be constructed and operated in a particular orientation. Therefore, these terms should not be construed as limiting the present disclosure.

[0031] Furthermore, terms such as "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying a relative importance or number of the specified technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, "multiple" means two or more than two, unless explicitly defined otherwise.

[0032] In this disclosure, unless explicitly stated and defined otherwise, a structure in which a first feature lies "on" or "below" a second feature may include an embodiment in which the first feature is in direct contact with the second feature, and may also include an embodiment in which the first feature is in indirect contact with the second feature via an intermediate medium. Further, a first feature "on," "over," or "above" a second feature may include an embodiment in which the first feature lies exactly or obliquely "on," "over," or "above" the second feature, or simply means that the first feature lies at a horizontal elevation higher than that of the second feature.Furthermore, a first feature “below,” “beneath,” or “on the underside of” a second feature may include an embodiment in which the first feature is exactly or obliquely “below,” “below,” or “on the underside of” the second feature, or simply means that the first feature is at a horizontal height lower than that of the second feature.

[0033] In a prior art surgical stapler staple cartridge assembly, the number of staples on both sides of the blade's travel path is designed to be identical. This ensures that when performing a tissue anastomosis procedure with the prior art surgical stapler, the width of the tissue end to be retained and the width of the tissue end to be cut are identical. However, the inventor discovered that there are differences in the anastomosis dimension requirements for the retained end and the cut end of the tissue.When using the prior art surgical stapler, the end of the tissue to be retained may experience higher bleeding due to insufficient number of staples, which in turn affects the effect of the anastomosis, while the end of the tissue to be cut may experience excessive anastomosis and waste of staples due to redundant number of staples.

[0034] To improve at least one deficiency in the above-mentioned prior art, the embodiments of the present application propose a staple cartridge, a staple cartridge assembly, and a surgical stapler. By varying the number of distributed staple grooves on both sides of the feed groove on the staple cartridge, different numbers of staples can be arranged to meet different anastomosis requirements at the end of the tissue to be cut off and the end of the tissue to be retained. Thus, the anastomosis effect is improved and staple waste is reduced.

[0035] The staple cartridge, the staple cartridge assembly, and the surgical stapler proposed in the embodiments of the present application will be described below in conjunction with the accompanying drawings. In the accompanying drawings, the Z-axis denotes the vertical direction, i.e., the position from top to bottom, and the positive direction of the Z-axis (i.e., the direction shown by the Z-axis arrow) points upward, while the negative direction of the Z-axis points downward. In the accompanying drawings, the X-axis denotes the position from front to back, and the positive direction of the X-axis (i.e., the direction shown by the X-axis arrow) indicates the front, while the negative direction of the X-axis indicates the back. The Y-axis in the accompanying drawings denotes the horizontal direction and represents the position from left to right. The positive direction of the Y-axis (i.e.,The direction indicated by the Y-axis arrow indicates the right side, and the negative direction of the Y-axis indicates the left side. It should be noted that the above-mentioned meanings of the Z-axis, Y-axis, and X-axis are provided only to facilitate the description of the present application and simplify the description, and do not indicate or imply that the mentioned devices or elements must have a particular orientation, or must be constructed and operated in a particular orientation. Therefore, it cannot be construed as limiting the present application.

[0036] Fig. 1 is a schematic representation of a surgical stapler in one embodiment of the present application. As shown in Fig. 1, the surgical stapler proposed in this embodiment of the present application comprises a drive body 01, a gear unit 02, a cutting edge (not shown in the figure), a staple cartridge base 2, a counter base 3, and a staple cartridge assembly 1. The gear unit 02 is connected between the staple cartridge assembly 1 and the drive body 01. The drive body 01 provides a driving force, and the impulse is transmitted to the cutting edge through the gear unit 02, so that the cutting edge and the sliding element 13 in the staple cartridge assembly 1 can slide synchronously with each other in the staple cartridge assembly 1, thereby enabling a cutting process and an anastomosis process in the tissue. Fig. In the embodiment shown in Figure 1, the staple cartridge base 2, the counterbase 3, and the staple cartridge assembly 1 are all located at the front end of the surgical stapler. This surgical stapler can be used in abdominal surgery and other procedures, such as the removal of diseased tissue. This application is not limited thereto.

[0037] Fig. 2 is a schematic diagram for the assembly of a staple cartridge base, a staple cartridge assembly, and a counter base in one embodiment of the present application. Fig. 3 is a schematic exploded view of the staple cartridge base, the staple cartridge assembly, and the counter base in one embodiment of the present application. As shown in the Fig. 2 and Fig. 3, in the exemplary embodiment, the staple cartridge base 2 is configured for fixedly mounting the staple cartridge assembly 1. The counter base 3 is configured such that, together with the staple cartridge assembly 1, it clamps the tissue to be anastomosed, and such that the staple 4 actuated by the staple cartridge assembly 1 bears against the counter base 3. Thus, the staple 4 is deformed, and therefore the anastomosis procedure for the tissue is enabled. Optionally, the counter base 3 is rotatably connected to one end of the staple cartridge base 2, whereby the counter base 3 and the staple cartridge base 2 can perform a relative movement with each other for opening and closing.

[0038] The staple cartridge assembly 1 proposed in the embodiment of the present application comprises a staple cartridge 11, a pusher 13, a staple seat 15, and a staple 4. The staple 4 is mounted on the staple seat 15, and the staple cartridge 11 is configured to receive the staple seat 15 and the staple 4 prior to the anastomosis procedure. The pusher 13 is configured to move relative to the staple cartridge 11 under the drive of the drive body 01 to shoot the staple 4 out of the staple cartridge 11 and nail it into the tissue. Thus, the anastomosis procedure is completed.

[0039] In the embodiment of the present application, the staple magazine 11 is formed with a feed groove 113 and a plurality of staple groove groups 114. The feed groove 113 extends along a first predetermined direction (parallel to the extension direction of the X-axis in the figure) and is configured so that the cutting edge passes through the feed groove. When the staple magazine 11 is used, the cutting edge can smoothly pass through the feed groove 113 to perform the cutting operation.

[0040] A plurality of staple groove groups 114 are distributed along the width direction of the feed groove 113 (parallel to the Y-axis direction in the figure), with at least one staple groove group 114 being distributed on both sides of the feed groove 113 in the width direction, and the number of staple groove groups 114 is different on both sides of the feed groove 113. Each staple groove group 114 includes a plurality of staple grooves 1141 distributed along the first predetermined direction. In other words, one staple groove group 114 consists of a column of staple grooves 1141 arranged along the first predetermined direction. The staple groove 1141 is configured to mount the staple 4. The staple 4 is actuated by the movement of the slide member 13. This will be explained later by way of example.

[0041] Since the advance groove 113 of the staple cartridge 11 extends along the first predetermined direction, the advance groove 113 can limit the movement of the cutting edge so that the sheath moves in the first predetermined direction. During surgery, the surgical stapler presses the tissue to be treated through the counter base 3 and the staple cartridge 11. The cutting edge can advance and perform a cutting operation through the advance groove 113. At the same time, a plurality of staple groove groups 114 are distributed on both sides of the advance groove 113 along the groove width direction of the advance groove 113, and the number of staple groove groups 114 is different on both sides of the advance groove 113. Therefore, the strength and width of the anastomosis on both sides of the advance groove 113 are different in the groove width direction.This allows the strength of the anastomosis to be specifically increased on the side where the number of staple groove groups 114 is larger. Thus, the different anastomosis requirements at the end of the tissue to be cut and the end of the tissue to be retained can be met. More specifically, the side with a larger number of staple groove groups 114 corresponds to the end of the tissue to be retained, while the side with a smaller number of staple groove groups 114 corresponds to the end of the tissue to be cut. This can meet the anastomosis requirement at the end of the tissue to be retained, reduce bleeding at the end of the tissue to be retained, and improve the effect of the anastomosis at the end of the tissue to be retained. The problems of excessive anastomosis and waste of staples 4 caused by excessive staples 4 at the end of the tissue to be cut are also reduced.Overall, this application has been found to advantageously improve the utilization rate of the staples 4, reduce bleeding at the retained end of the tissue, and increase the impact of the anastomosis at the retained end of the tissue.

[0042] As in Fig. 3, optionally, the feed groove 113 extends along a straight line, and one end of the feed groove 113 is provided with a first opening 1131 through which the cutting edge can pass. More specifically, the first opening 1131 is located at the rear end of the feed groove 113 and faces the end corresponding to the negative direction of the X-axis in the figure. With this arrangement, the cutting edge can enter the feed groove 113 through the first opening 1131 along the first predetermined direction and move linearly along the first predetermined direction to perform the cutting operation. Therefore, the staple cartridge 11 in the embodiment can be applied to a linear stapler that can perform anastomosis along a straight line, whereby the staple cartridge 11 has a simple structure and is very practical.

[0043] As in Fig. 3, optionally, the number of staple groove groups 114 on any side of the advancing groove 113 in the groove width direction is greater than or equal to two. In other words, the number of staple groove groups 114 is greater than two on both the left side and right side of the advancing groove 113. Optionally, the number of staple groove groups 114 on the left side is three, and the number of staple groove groups 114 on the right side is two (this embodiment is not shown in the figure). By this arrangement, it is possible to avoid the impairment of the anastomosis effect at respective positions due to the insufficient number of staple groove groups 114 on both sides of the advancing groove 113.

[0044] Optionally, the difference between the numbers of the clamp groove groups 114 on both sides of the feed groove 113 in the groove width direction is less than or equal to two. For example, the number of clamp groove groups 114 on the left side of the feed groove 113 is greater than the number of clamp groove groups 114 on the right side of the feed groove 113, and the difference between the number of clamp groove groups 114 on the left side and the number of clamp groove groups 114 on the right side is one or two.

[0045] As in Fig. 3, optionally, four clamp groove groups 114 are arranged on the left side of the feed groove 113, and two clamp groove groups 114 are arranged on the right side of the feed groove 113. In other alternative embodiments, three clamp groove groups 114 are arranged on the left side of the feed groove 113, and two clamp groove groups 114 are arranged on the right side of the feed groove 113 (this embodiment is not shown in the figure).

[0046] This design can avoid an excessively large difference between the numbers of staple groove groups 114 on both sides of the feed groove 113, which may cause the overall size of the staple cartridge 11 along the feed groove 113 and along its groove width direction to be too large, thereby impairing the applicability of the surgical stapler.

[0047] It should be understood that the relative positional relationship between a plurality of staple groove groups 114 along the groove width direction of the feed groove 113, that is, the Y-axis direction in the figure, can be provided according to actual needs. Optionally, a plurality of staple groove groups 114 are distributed on the same side of the feed groove 113 at an equal interval. Optionally, the staple grooves 1141 of two adjacent staple groove groups 114 are staggered so that the staples 4 are arranged in a plurality of rows in the Y-axis direction after the anastomosis, and the staples 4 of two adjacent rows on the same side are staggered, whereby the anastomosis effect can be ensured.

[0048] Fig. 4 is a schematic section of the second side of the staple magazine in an embodiment of the present application. As in Fig. As shown in Figure 4, the feed groove 113 and the staple groove 114 extend through the staple magazine along a second predetermined direction (parallel to the Z-axis direction in the figure), which second predetermined direction is perpendicular to the first predetermined direction and the groove width direction. The staple magazine 11 has a first side and an opposite second side in the second predetermined direction. Fig. 2 and Fig. 3 show the first side of the staple magazine 11, and Fig. 4 shows the second side of the staple cartridge 11. The opening of the staple groove 1141 formed on the first side of the staple cartridge 11 is configured so that the front end of the actuated staple 4 protrudes. On the second side of the staple cartridge 11, a plurality of staple pushing grooves 116 are provided, which extend along the first predetermined direction. The staple pushing groove 116 is arranged between two adjacent staple groove groups 114 on the same side of the feed groove 113 and is connected in the groove width direction to the staple grooves 1141 of the two adjacent staple groove groups 114. The pushing member 13 is arranged on the second side of the staple cartridge 11 and is configured so that the pushing member can move relative to the staple cartridge 11 in the first predetermined direction.The pushing element 13 is at least partially inserted into the staple pushing groove 116 and can move along the staple pushing groove 116 to push the staple 4 in the staple groove 1141 toward the first side of the staple cartridge 11. The staple pushing groove 116 is configured such that at least a portion of the pushing element 13 can pass through, so that the staple 4 located in the staple groove 1141 can be pushed by the pushing element 13 to move toward the first side of the staple cartridge 11. It can be understood that as the pushing element 13 moves along the staple pushing groove 116, the pushing element can directly or indirectly abut the staple 4. The staple 4 can move toward the first side of the staple cartridge 11 under the pushing action of the pushing element 13, thereby puncturing and anastomosing the tissue abutting the first side of the staple cartridge 11.

[0049] Fig. 5 is a schematic illustration of an embodiment of the present application in which the pushing member contacts the plurality of staple seats to push the staple. Fig. 6 is a schematic diagram of the structure of a clip pushing element in an embodiment of the present application. As shown in the Fig. 2 to 6, the sliding member 13 optionally includes a plurality of staple sliding plates 131 arranged at intervals along the groove width direction of the feed groove 113, and the number of staple sliding plates 131 is equal to the number of staple sliding grooves 116, and the staple sliding plates 131 are uniquely inserted into the staple sliding grooves 116. In the embodiment, one staple sliding groove 116 is provided on one side of the feed groove 113 in the groove width direction, and two staple sliding grooves 116 are provided on the other side. Therefore, the number of staple sliding plates 131 is three. The staple 4 is mounted in the staple groove 1141 through the staple seat 15 and slidably arranged up and down in the staple groove 1141.The staple pushing plate 131 moves in the pushing direction (such as the positive direction of the X-axis in the figure) to push the staple seat 15 upward so that the staple 4 can protrude from the first side of the staple cartridge 11.

[0050] In the embodiment of the present application, the staple seat 15 is received in the staple groove 1141 and the staple pushing groove 116 and configured to support the staple 4. For example, at least a part of the staple seats 15 (such as each staple seat 15) includes two connected sub-staple seats 151 distributed substantially along the groove width direction of the feed groove 113. The two sub-staple seats 151 are respectively slidably fitted with the staple grooves 1141 in adjacent staple groove groups 114, so that the staple seat 15 can move relative to the staple cartridge 11 in the second predetermined direction (the extending direction of the Z-axis in the figure, that is, an up-and-down movement). Two staples 4 are respectively arranged at the end facing the first side of the staple cartridge 11 on two sub-staple seats 151.In other words, a staple 4 is mounted at the upward end of each sub-staple seat 151. The two sub-staple seats 151 are each mounted to slide up and down in the staple grooves 1141 of different staple groove groups 114. It can be understood that the staple seat 15 bridges between two different staple groove groups 114, and the center of the staple seat 15 is located in the staple pushing groove 116, so that when the staple pushing plate 131 moves in the staple pushing groove 116, the entire staple seat 15 can be pushed to move it in the second predetermined direction. Alternatively, the staple seat 15 may be integrally formed or assembled from two sub-staple seats 151.

[0051] Optionally, a guide surface 1311 is provided at an end of the staple pushing plate 131 facing the first predetermined direction. The guide surface 1311 is arranged obliquely with respect to the first predetermined direction and inclined toward the second side of the staple magazine 11. The guide surface 1311 is configured such that the staple 4 is pushed toward the first side of the staple magazine 11 when the guide surface moves in the first predetermined direction. When the cutting edge drives the pushing member 13 to move the pushing member from back to front, the guide surface 1311 of the staple pushing plate 131 comes into contact with the underside of the staple seat 15. When the staple pushing plate 131 continues to move in the first predetermined direction, the staple seat 15 is limited by the staple groove 1141 and cannot move in the first predetermined direction. Therefore, the guide surface 1311 slides relative to the staple seat 15.The staple seat 15 is forced to move along the second predetermined direction toward the first side of the staple magazine 11, so that the staple seat 15 is moved upward relative to the staple magazine 11, thereby actuating the staple 4.

[0052] Optionally, a second opening 1161 is provided at one end of the staple pushing groove 116, which is configured to allow the pushing element 13 to pass through in the first predetermined direction. Optionally, a portion of the pushing element 13 can enter the staple pushing groove 116 from the second opening 1161 along the first predetermined direction. In the exemplary embodiment, the second opening 1161 and the first opening 1131 are located at the same end of the staple cartridge 11.

[0053] Optionally, the sliding member 13 also includes a guide portion 132. A guide groove 117 extending along the first predetermined direction is provided on the second side of the staple magazine 11. The guide groove 117 is slidably fitted with the guide portion 132 of the sliding member 13. Due to the fit of the guide portion 132 and the guide groove 117, the sliding member 13 can move more stably relative to the staple magazine 11. Optionally, the guide portion 132 is plate-shaped and arranged parallel to respective staple sliding plates 131 at a distance from each other. Optionally, the guide portion 132 is provided on one side of the plurality of staple sliding plates 131, which side corresponds to the side of the feed groove 113 in the groove width direction.Optionally, the guide portion 132 is located on the side of the feed groove 113 on which fewer staple groove groups 114 are arranged, so that the fit between the sliding member 13 and the staple magazine 11 is more stable and balanced on both sides of the groove width direction.

[0054] Fig. 7 is a schematic representation of a staple cartridge assembly in an embodiment of the present application, in which the staple cartridge assembly 1 further comprises an elastic limiting unit 12. Fig. Fig. 8 is a schematic diagram of an arrangement of the elastic limiting unit 12 in the embodiment of the present application. As shown in the Fig. 7 and Fig. 8, a sliding direction of the sliding member 13 optionally coincides with the extending direction of the feed groove 113 of the staple cartridge 11. The staple cartridge assembly 1 further includes an elastic limiting unit 12, and an installation hole 111 is provided on the staple cartridge 11. The elastic limiting unit 12 is mounted on the installation hole 111. The elastic limiting unit 12 includes an elastic force transmission structure 123, 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 respectively disposed near the inner and outer ends of the installation hole 111. The trigger portion 121 is disposed in the staple-pushing movement path of the sliding member 13 along the first predetermined direction.The elastic limiting unit 12 is configured to undergo elastic deformation when the trigger portion 121 is urged by the pusher member 13. Thus, the trigger portion 121 can retreat from the staple pushing movement path. The elastic force transmission structure 123 is configured to exert an elastic driving force on a limiting portion 121, so that the limiting portion 121 protrudes toward the outer end of the installation hole 111 when the trigger portion retreats from the staple pushing movement path.

[0055] In the embodiment, the restricting portion 122 is arranged corresponding to a predetermined area of ​​the outer surface of the staple cartridge 11. The predetermined area is an area opposite to the staple cartridge base 2 in the outer surface of the staple cartridge 11 after the staple cartridge 11 is mounted to the staple cartridge base 2. In this way, when the staple cartridge assembly 1 is mounted to the staple cartridge base 2, the restricting portion 121 is driven by the elastic force transmission structure 123 to expand toward the outer end of the installation hole 111 and comes into contact with the inner wall of the staple cartridge base 2. The elastic restricting unit 12 is in a compressed state and accumulates elastic potential energy.

[0056] In the exemplary embodiment, the staple magazine assembly 1 is mounted in the staple magazine base 2. Optionally, the staple magazine base 2 is formed with a groove-shaped structure 21, and the staple magazine assembly 1 is mounted within the groove-shaped structure 21. The staple magazine assembly 1 protrudes at least with its upper side from the groove-shaped structure 21, so that the subsequent staples 4 can be pushed out from the upper side of the staple magazine assembly 1 and come into contact with the counter base 3. Optionally, the predetermined area of ​​the outer surface of the staple magazine 11 is the area opposite the inner wall of the groove-shaped structure 21.It can be understood that when the restriction portion 121 is urged by the pushing member 13 and retreats from the movement path, the staple cartridge base 2 abuts against the restriction portion 121, thereby compressing the elastic restriction unit 12 in the groove width direction of the advancing groove 113. After the anastomosis process is completed, the staple cartridge assembly 1 is exempted from the groove-shaped structure 21, and the restriction of the restriction portion 121 by the staple cartridge base 2 is deactivated, so that the restriction portion 121 protrudes outward under the elastic driving force of the elastic force transmission structure 123. Thereafter, the staple cartridge assembly 1 cannot be reinstalled into the groove-shaped structure 21 of the staple cartridge base 2 due to the restricting action of the restriction portion 121.

[0057] In the exemplary embodiment, the staple magazine assembly 1 further comprises a staple magazine cover 14 located at the rear of the staple magazine 11 and removably connected to the staple magazine 11. The staple magazine assembly 1 is connected to the staple magazine base 2 via the staple magazine cover 14. Optionally, the staple magazine cover 14 forms a receiving space, and the staple magazine 11 is arranged in the receiving space of the staple magazine cover 14.

[0058] The sliding member 13 is partially located between the staple cartridge cover 14 and the staple cartridge 11, and the staple cartridge cover 14 and the staple cartridge 11 jointly realize the sliding guidance of the sliding member 13 along the first predetermined direction. The sliding direction of the sliding member 13 corresponds to a back-to-front movement direction. Specifically, when the surgical stapler is inserted into the predetermined position and the counter base 3 and the staple cartridge base 2 close to press the tissue to be sutured, the sliding member 13 moves from back to front under the driving action (such as the pushing action of the cutting edge). Thus, the staples 4 are carried along and actuated sequentially from back to front, such as being struck upward. The actuated staple 4 strikes a forming groove 31 on the counter base 3, and suturing is performed by deformation of the staple.For example, staple 4 deforms into a B-shaped form so that the requirements of the anastomosis are met.

[0059] Fig. 9 is a schematic section of the counter socket in an embodiment of the present application. As in Fig. 9, a plurality of forming grooves 31 are arranged on a side of the staple magazine base 2 facing the staple magazine assembly 1. The number of forming grooves 31 is equal to the number of staple grooves 1141 on the staple magazine. When the staple magazine base 2 is closed, the plurality of forming grooves 31 are arranged directly opposite the plurality of staple grooves 1141 in the second predetermined direction. Due to the fact that the staple 4 has two tips, each forming groove 31 has two paired grooves 311, whereby the two tips of the staple 4 can bend and deform towards each other when urged into the two grooves 311, ultimately deforming the staple 4 into a B-shape.

[0060] It should be noted that when the sliding member 13 is at its original limit position, that is, at the rear end position of the staple cartridge 11, for example, when the staple cartridge 11 of the staple cartridge assembly 1 is filled with staples 4, the sliding member 13 does not contact the firing portion 121. Therefore, the firing portion 121 is located in the movement path of the sliding member 13 along its sliding movement, and the limiting portion 122 does not move outside the staple cartridge 11 due to the action of the sliding member 13 on the firing portion 121. When the firing portion 121 is not influenced by the sliding member 13, the limiting portion 122 does not come into contact with the staple cartridge base 2, for example, does not come into contact with the inner wall surface of the groove-shaped structure 21 of the staple cartridge base 2.The staple magazine assembly 1 can be smoothly installed into the groove-shaped structure 21 of the staple magazine base 2.

[0061] To clarify the content of the present application, an example is given in this description in which the installation hole 111 is located on the first side wall 112 of the staple magazine 11. The first side wall 112 is a side plate of the staple magazine 11 along the width direction (ie, the groove width direction of the feed groove 113). It should be understood that the present application is not limited to this. For example, the installation hole 111 may also be provided on the bottom plate of the staple magazine 11. This will not be discussed in detail here.

[0062] The trigger portion 121 of the elastic limiting unit 12 is located near the inner end of the installation hole 111. For example, the trigger portion 121 of the elastic limiting unit 12 is located on the side opposite to the outer end of the inner end of the installation hole 111 and is located in the movement path of the sliding member 13 along its sliding direction (the sliding direction is defined as a movement direction from back to front).

[0063] The limiting portion 122 of the elastic limiting unit 12 is located near the outer end of the installation hole 111. For example, the limiting portion 122 of the elastic limiting unit 12 is located on a side of the outer end of the installation hole 111 facing the inner end face, and the limiting portion 122 is arranged corresponding to the predetermined area of ​​the outer surface of the staple cartridge 11. The predetermined area is an area in the outer surface of the staple cartridge 11 that is opposite to the staple cartridge base 2. For example, the predetermined area is arranged opposite to the inner wall on the staple cartridge base 2, which is designed for installing the groove-shaped structure 21 of the staple cartridge assembly 1.

[0064] The specific structure of the elastic limiting unit 12 is not limited in the present application, as long as it has an elastic force transmission structure 123, a trigger portion 121, and a limiting portion 122, the trigger portion 121 and the limiting portion 122 being located at both ends of the elastic force transmission structure 123. The elastic force transmission structure 123 is configured to transmit an elastic acting force between the trigger portion 121 and the limiting portion 122. For example, if any one of the limiting portion 122 and the trigger portion 121 is unobstructed in the left-right direction and the other is urged by the limiting portion 122 and the trigger portion 121 in the left-right direction, the elastic force transmission structure 123 can cause the other of the limiting portion 122 and the trigger portion 121 to move along with it.When any one of the restricting portion 122 and the triggering portion 121 is hindered in the left-right direction, and the other of the restricting portion 122 and the triggering portion 121 is urged in the left-right direction, the potential energy of the elastic force transmission structure 123 increases. Thereby, the demand that the urged distance of the restricting portion 122 and the triggering portion 121 in the left-right direction should decrease is satisfied.

[0065] With this arrangement, the sliding direction of the sliding member 13 coincides with the extension direction of the feed groove 113 of the staple cartridge 11. The staple cartridge 11 has the installation hole 111, and the elastic limiting unit 12 is mounted on the installation hole 111 to achieve the installation of the elastic limiting unit 12 in the staple cartridge 11. The elastic limiting unit 12 includes an elastic force transmission structure 123, a trigger portion 121, and a limiting portion 122. The trigger portion 121 and the limiting portion 122 are located at both ends of the elastic force transmission structure 123. The trigger portion 121 and the limiting portion 122 are respectively disposed near the inner end and the outer end of the installation hole 111.When the staple cartridge assembly 1 is mounted on the staple cartridge base 2 of the surgical stapler, the predetermined area represents an area in the outer surface of the staple cartridge 11 that is opposite to the staple cartridge base 2, since the limiting portion 122 is arranged corresponding to the predetermined area of ​​the outer surface of the staple cartridge 11. When the pushing member 13 moves in its pushing direction (e.g., from back to front) and comes into contact with the trigger portion 121, at least a portion of the staple 4 in the staple cartridge 11 is actuated, and the trigger portion 121 is moved outward from the staple cartridge 11 under the pushing action of the pushing member 13.The elastic force transmission structure 123, under the influence of the trigger section 121, entrains the limiting section 122 to move the limiting section 122 outward of the staple magazine 11, so that the limiting section 122 abuts against the inner wall of the staple magazine base 2, which is formed, for example, with a groove-shaped structure 21. At this time, the potential energy of the elastic force transmission structure 123 is relatively large, but it does not affect the normal use of the staple magazine assembly 1 in the staple magazine base 2, and the staple magazine assembly 1 can be easily removed from the staple magazine base 2. When the staple magazine assembly 1 is removed from the staple magazine base 2, the abutting action of the staple magazine base 2 against the limiting section 122 is deactivated.Under the influence of the potential energy of the elastic force transmission structure 123, the limiting portion 122 moves outward of the staple cartridge 11, whereby the staple cartridge assembly 1 has a larger dimension at the limiting portion 122 and essentially forms a stop. In particular, it forms a barrier for the staple cartridge assembly 1 to be reinstalled into the staple cartridge base 2 in this state. This means that the staple cartridge assembly 1, in which at least some of the staples 4 have been actuated, is much more difficult to install into the staple cartridge base 2. Thus, it can be prevented, at least to some extent, that the staple cartridge assembly 1, in which at least some of the staples 4 have been actuated, is undesirably installed into the staple cartridge base 2.

[0066] As in the Fig. 7 and Fig. 8, the staple magazine 11 is optionally provided with a trigger section 121 at a limit position at the end of the movement path of the sliding element 13 used for pushing.

[0067] The staple cartridge assembly 1 in the embodiment includes only one elastic limiting unit 12, which includes only one trigger portion 121 and one limiting portion 122. In this case, the position of the installation hole 111 corresponds to the limit position at the end of the sliding member 13. This will be used as an example to explain the present application.

[0068] However, it should be understood that this application is not limited thereto. For example, a plurality of installation holes 111 may be provided, and a plurality of elastic limiting units 12 may be provided accordingly. Alternatively, the elastic limiting unit 12 may include a plurality of triggering portions 121 and corresponding elastic force transmission structures 123 and limiting portions 122. In this case, when the sliding member 13 has shifted different numbers of staples 4 and is located at different positions, unexpected installation of the staple cartridge assembly 1 after disassembly of the staple cartridge assembly 1 can be prevented by always triggering the respective triggering portion 121. It can be configured according to actual needs and will not be explained in detail here.

[0069] It should be understood that the end limit position is a position where the pusher 13 is located at the frontmost end of the staple cartridge 11. When the pusher 13 is located at the end limit position, all the staples 4 in the staple cartridge 11 are in an actuated state, that is, the staple cartridge 11 is in an empty state. With such a configuration, when the staple cartridge assembly 1 is disassembled from the staple cartridge base 2, the restricting portion 122 of the elastic restricting unit 12 can prevent undesired installation of the empty staple cartridge assembly 1 and avoid adverse consequences caused by the installation of the empty staple cartridge assembly 1 to the staple cartridge base 2.

[0070] Optionally, the staple magazine assembly 1 is configured to be connected to the staple magazine base 2 via the staple magazine cover 14. The staple magazine cover 14 is provided with a through hole 141 connected to the installation hole 111 and configured for the passage of the restriction portion 122.

[0071] In particular, the staple cartridge cover 14 is removably connected to the staple cartridge 11, such as by a snap-in connection. The staple cartridge assembly 1 is connected via the staple cartridge cover 14 to the groove-shaped structure 21 of the staple cartridge base 2, such as by a snap-in connection. The specific connection method between the two can be found in the prior art, such as those used by the assignee of the present application prior to the filing date, which are not described in detail here.

[0072] In this way, it is possible to ensure that, under the fact that the bottom of the staple magazine 11 is protected by the staple magazine cover 14, the restricting portion 122 can move smoothly outward of the staple magazine 11, such as in the left-right direction, and can abut against the inner wall of the groove-shaped structure 21 of the staple magazine base 2, or can form a protection against unexpected mounting of the empty staple magazine assembly 1.

[0073] Optionally, the elastic limiting unit 12 has a spring plate structure, and the fixed end of the spring plate structure is fixed to the edge of the installation hole 111. The elastic force transmission structure 123, the trigger portion 121, and the limiting portion 122 are all formed on the spring plate structure.

[0074] In particular, the spring plate structure can be formed by a single spring plate. In this case, the elastic force transmission structure 123, the trigger portion 121, and the limiting portion 122 are formed by the spring plate structure. The structure of the elastic limiting unit 12 is simple and highly reliable. In other embodiments, the spring plate structure can also be formed by connecting multiple spring plates. No limitation is made in this application as long as the usage requirements can be met.

[0075] As in Fig. 8, a first portion 12a, a second portion 12b, and a third portion 12c are optionally formed by bending the spring plate structure, which are connected one after the other. The first portion 12a forms the fixed end of the spring plate structure and is fixedly connected to the staple magazine 11 on the peripheral side of the installation hole 111. The second portion 12b and the third portion 12c are each arranged at an inclination relative to the first portion 12a, and the third portion 12c is arranged obliquely to the second portion 12b. The opening direction of the angle formed by the second portion 12b and the third portion 12c corresponds to the depth direction of the installation hole 111. The connecting portion between the second portion 12b and the third portion 12c forms the trigger portion 121, and the third portion 12c forms the elastic force transmission structure 123.

[0076] For example, the spring plate structure abuts the first portion 12a on the staple cartridge 11 to enable the position of the attached end of the spring plate structure to be fixed to the staple cartridge 11. The inner wall of the staple cartridge cover 14 and the outer wall of the staple cartridge 11 clamp the attached end of the spring plate structure. The limiting portion 122 is located at one end of the third portion 12c near the outside of the installation hole 111, and the triggering portion 121 is located at one end of the third portion 12c near the inside of the installation hole 111, and the second portion 12b is arranged at an angle relative to the first portion 12a.

[0077] In this way, the elastic limiting unit 12 can be formed by bending a single spring plate, without having to use multiple components to form the elastic limiting unit 12. The structure is so simple that the third portion 12c can move as a whole relative to the first portion 12a, and the third portion 12c can be retracted by the second portion 12b. For example, the end of the third portion 12c facing the second portion 12b can move retractably relative to the first portion 12a in the depth direction of the installation hole 111, that is, in the left-right direction. The third portion 12c is arranged inclined relative to the first portion 12a, so that the trigger portion 121 and the limiting portion 122 of the third portion 12c can move relative to each other and accumulate the potential energy to a certain extent through the elastic deformation of the third portion 12c.The relative position of the trigger portion 121 and the limiting portion 122 can be reset by the deformation of the third portion 12c itself. This enables a simple structure and good practicability.

[0078] As in Fig. 8, optionally, the first portion 12a is connected to a plug-in portion 12d, and a plug-in groove 115 is provided on the staple cartridge 11. The plug-in portion 12d is inserted into the plug-in groove 115. For example, at an end of the first portion 12a far from the second portion 12b, this plug-in portion formed by bending is provided, and the depth direction of the plug-in groove 115 may coincide with the depth direction of the installation hole 111.

[0079] For example, when the first portion 12a abuts the outer end face of the mounting hole 111 of the staple cartridge 11, the end of the first portion 12a farthest from the second portion 12b is bent inward of the staple cartridge 11 to form the plug-in portion. With this configuration, the plug-in connection between the plug-in portion 12d and the plug-in groove 115 can improve the reliability of the connection between the fixed end of the spring plate structure and the staple cartridge 11.

[0080] It should be understood that one or more of the trigger portion 121 and the restricting portion 122 may be provided with an inclined guide surface for contact guidance as needed. For example, one or more of the trigger portion 121 and the restricting portion 122 may be formed into a convex spherical structure so that when the slide member 13 contacts the trigger portion 121, damage to the contact surface caused by scratching of the two can be avoided. When the restricting portion 122 contacts the staple cartridge base 2, damage to the contact surface caused by scratching of the two is avoided. Thus, the service life of the components is increased and abnormal noise and contamination caused by scratching are reduced.

[0081] In the above embodiment, the groove-shaped structure 21 is optionally provided on the staple cartridge base 2, and the staple cartridge assembly 1 can be inserted into the groove-shaped structure 21 along the first predetermined direction. The first portion 12a, the second portion 12b, and the third portion 12c are sequentially connected to each other along the first predetermined direction.

[0082] Optionally, the staple cartridge assembly 1 is configured to move from front to back and be inserted into the groove-shaped structure 21. The first portion 12a, the second portion 12b, and the third portion 12c are arranged sequentially from front to back. At this time, the end of the third portion 12c forms a restricting portion 122, and the other end forms a releasing portion 121. When the pushing member 13 of the staple cartridge assembly 1 and the releasing portion 121 are pushed and the staple cartridge assembly 1 is in a disassembled state, and when it is necessary to move the staple cartridge assembly 1 from front to back and push it into the groove-shaped structure, the restricting portion 122 at the end of the third portion 12c protrudes in the left-right direction beyond the outer surface of the staple cartridge assembly 1 (e.g., beyond the outer surface of the staple cartridge cover 14).The front end of the groove-shaped structure 21 of the staple magazine base 2 then abuts the limiting portion 122. During the front-to-backward displacement of the staple magazine assembly 1, the limiting portion 122 tends to move forward relative to the first portion 12a due to the force exerted thereon, and at least in the initial phase, it tends to move outward, making it difficult to slide the staple magazine assembly 1 from front to back into the groove-shaped structure 21. Thus, an improved effect for preventing unexpected assembly is achieved.

[0083] As in Fig. 8, in the above embodiment, the staple magazine cover 14 may optionally press the fixed end of the spring plate structure against the end surface of the outer end of the installation hole 111.

[0084] Specifically, the inner surface of the staple magazine cover 14 along the left-right direction presses the first portion 12a against the end surface of the outer end of the installation hole 111, so that the plug portion 12d with the plug groove 115 can remain in a hidden state, thereby ensuring the reliability of the connection between the spring plate structure and the staple magazine 11.

[0085] It should be understood that the staple cartridge 11 may be provided with a receiving groove on the end face of the outer end of the mounting hole 111. The receiving groove is configured to receive a spring plate structure, such as the first portion 12a.

[0086] As in Fig. 8, in the above embodiment, optionally, the first side walls 112 on both sides of the staple cartridge 11 along the width direction are each provided with a mounting hole 111 and an elastic limiting unit 12. Optionally, two mounting holes 111 and two elastic limiting units 12 are arranged symmetrically in the left-right direction. In this way, to prevent undesired mounting, both the left and right sides of the staple cartridge assembly 1 are obstructed by the two limiting portions 122, and the forces are balanced, thereby avoiding the possibility of damage to the staple cartridge assembly 1 due to uneven force on the left and right sides and ensuring high reliability.

[0087] It should be understood that the construction of the elastic limiting unit 12 has been described above by way of example, but this application is not limited thereto. For example, in another alternative embodiment of the spring plate structure, the end of the second section 12 facing away from the first section 12a can be connected between the two ends of the third section 12c. This will not be described in detail here.

[0088] Fig. 10 is a schematic representation of the assembly of the protective component 16 of the staple cartridge assembly 1 in an embodiment of the present application. As in Fig.10, the staple cartridge assembly 1 optionally also includes a protective component 16 that covers the first side of the staple cartridge 11 prior to the anastomosis procedure, thereby protecting the first side of the staple cartridge 11. For example, the protective component 16 can prevent external foreign matter from entering the staple groove 1141 of the staple cartridge 11 and also prevent the staple 4 from falling out of the staple groove 1141. Optionally, the protective component 16 is provided in the left-right direction with one or more snap portions 161 that can be positively connected to the staple cartridge 11 or the staple cartridge base 2 in a snap-locking manner, thereby preventing detachment of the protective component 16. During the anastomosis procedure, it is necessary to remove the protective component 16. It should be understood that the external force required to remove the protective component 16 must be greater than the snap force of the snap portion 161.In other alternative embodiments, the protective component 16 may also be attached in other ways, for example, it may be attached by adhesive to the first side of the staple cartridge 11. Before the anastomosis procedure, the protective component 16 may be torn off by applying an external force greater than the adhesive force.

[0089] In summary, compared with the prior art, the feeding groove of the staple cartridge proposed in the embodiments of the present application extends along the first predetermined direction, and the feeding groove is configured so that the cutting edge passes through the feeding groove. When the staple cartridge is used with a surgical stapler, especially when the surgical stapler clamps the tissue to be operated through the counter socket and the staple cartridge, the cutting edge can perform cutting operations via the feeding groove. At the same time, a plurality of staple groove groups are distributed on both sides of the feeding groove along the width direction of the feeding groove, and the number of staple groove groups on both sides of the feeding groove is different, so that the strength and the width of the anastomosis on both sides of the feeding groove are different along the width direction.This allows the strength of the anastomosis to be increased on the side with a larger number of staple groove groups. This allows the different anastomosis requirements for the end of the tissue to be cut and the end of the tissue to be preserved to be met. Specifically, the side with a larger number of staple groove groups corresponds to the end of the tissue to be preserved, while the side with a smaller number of staple groove groups corresponds to the end of the tissue to be cut. This can meet the anastomosis requirement for the end of the tissue to be preserved, improve the anastomosis effect at the end of the tissue to be preserved, and reduce bleeding at the end of the tissue to be preserved.

[0090] The problems of excessive anastomosis and staple waste caused by excessive staples at the end of the tissue to be cut are also improved. Overall, the staple cartridge in embodiments of the present application has been found to advantageously improve staple utilization, reduce bleeding at the end of the tissue to be preserved, and increase the impact of the anastomosis at the end of the tissue to be preserved.

[0091] Throughout this specification, reference terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" indicate that the specific features, structures, materials, or features described in connection with the embodiments or examples are included in at least one embodiment or example of the present disclosure. Throughout this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the described specific features, structures, materials, or features may be combined in any suitable manner in one or more embodiments or examples.Furthermore, one skilled in the art may combine and combine the various non-conflicting embodiments or examples given in this specification, as well as the features of various embodiments or examples.

[0092] Although the embodiments of the present disclosure are illustrated and explained above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art may make changes, modifications, alternatives, and variations to the embodiments within the scope of the present disclosure. Industrial applicability

[0093] In summary, the present application proposes a staple cartridge, a staple cartridge assembly, and a surgical stapler, in which the utilization rate of staples can be advantageously improved, the bleeding at the end of the tissue to be preserved can be reduced, and the effect of the anastomosis at the end of the tissue to be preserved can be increased. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CN 2024212999839

[0001]

Claims

[1] Staple magazine, characterized by in that the staple magazine is formed with a feed groove (113) and a plurality of staple groove groups (114), wherein the feed groove (113) extends along a first predetermined direction and is configured such that a cutting edge passes through the feed groove, and wherein each of the staple groove groups (114) comprises a plurality of staple grooves (1141) distributed along the first predetermined direction, and wherein the staple groove (1141) is configured for mounting a staple (4), and wherein the plurality of staple groove groups (114) are arranged at a distance along the groove width direction of the feed groove (113), and wherein at least one staple groove group (114) is distributed on both sides of the feed groove (113) in the groove width direction, and wherein the number of staple groove groups (114) on both sides of the feed groove (113) is different in the groove width direction. [2] Staple magazine according to claim 1, characterized by that the feed groove (113) extends along a straight line, wherein one end of the feed groove (113) is provided with a first opening 1131, and wherein the first opening (1131) is configured such that the cutting edge enters the feed groove (113) via the first opening along the first predetermined direction. [3] Staple magazine according to claim 1, characterized by that the plurality of clamp groove groups (114) are distributed at equal intervals on the same side of the feed groove (113). [4] Staple magazine according to claim 1, characterized by that the clamp grooves (1141) of the two adjacent clamp groove groups (114) are arranged offset from one another on the same side of the feed groove (113). [5] Staple magazine according to claim 1, characterized by that the number of clamp groove groups (114) on any side of the feed groove (113) in the groove width direction is in any case greater than or equal to two. [6] Staple magazine according to one of claims 1 to 5, characterized by that a difference between the numbers of the clamp groove groups (114) on both sides of the feed groove (113) in the groove width direction is less than or equal to two. [7] Staple magazine according to one of claims 1 to 5, characterized bythat the feed groove (113) and the staple groove (1141) run along a second predetermined direction through the staple magazine, which second predetermined direction is perpendicular to the first predetermined direction or the groove width direction, wherein the staple magazine (11) has a first side and an opposite second side in the second predetermined direction, and wherein the opening of the staple groove (1141) formed on the first side of the staple magazine is configured such that a front end of the actuated staple 4 protrudes from the opening, and wherein a plurality of staple pushing grooves (116) are provided on the second side of the staple magazine, which extend along the first predetermined direction,and wherein the staple pushing groove (116) is arranged between two adjacent staple groove groups (114) on the same side of the feed groove (113) and is connected in the groove width direction to the staple grooves (1141) of the two adjacent staple groove groups (114), and wherein the staple pushing groove (116) is configured such that the pushing element (13) is at least partially inserted into the staple pushing groove (116) to push the staple (4) in the staple groove (1141) to the first side of the staple magazine (11). [8] Staple magazine according to claim 7, characterized by that a second opening (1161) is provided at one end of the clip sliding groove (116), the second opening (1161) being configured such that the sliding element (13) passes through the second opening in the first predetermined direction. [9] Staple magazine according to claim 7, characterized bythat on the second side of the staple magazine there is a guide groove (117) extending along the first predetermined direction, wherein the guide groove (117) is configured such that the guide groove is slidably fitted with a guide portion (132) of the sliding element (13). [10] Staple magazine assembly, characterized by in that the staple magazine assembly comprises a sliding element (13) and a staple magazine according to one of claims 1 to 6, wherein the sliding element (13) is configured such that the sliding element (13) is movable relative to the staple magazine in order to actuate the staple (4) in the staple groove (1141) of the staple magazine. [11] Staple magazine assembly according to claim 10, characterized bythat the feed groove (113) and the staple groove (1141) run along a second predetermined direction through the staple magazine, which second predetermined direction is perpendicular to the first predetermined direction or the groove width direction, wherein the staple magazine has a first side and an opposite second side in the second predetermined direction, and wherein the opening of the staple groove (1141) formed on the first side of the staple magazine is configured such that a front end of the actuated staple (4) protrudes from the opening, and wherein a plurality of staple pushing grooves (116) are provided on the second side of the staple magazine, which extend along the first predetermined direction,and wherein the staple pushing groove (116) is located between the two adjacent staple groove groups (114) on the same side of the feed groove (113) and is connected in the groove width direction to the staple grooves (1141) of the two adjacent staple groove groups (114), and wherein the pushing element (13) is arranged on the second side of the staple magazine, and wherein the pushing element (13) protrudes at least partially into the staple pushing groove (116) and is movable along the staple pushing groove (116) to push the staple (4) in the staple groove (1141) to the first side of the staple magazine. [12] Staple magazine assembly according to claim 11, characterized byin that the sliding element comprises a plurality of staple sliding plates (131) which are arranged at a distance along the groove width direction, wherein the number of staple sliding plates (131) is equal to the number of staple sliding grooves (116), and wherein the staple sliding plates (131) are uniquely inserted into the staple sliding grooves (116). [13] Staple magazine assembly according to claim 12, characterized by that a guide surface (1311) is provided at an end of the staple pushing plate (131) located in the first predetermined direction, wherein the guide surface (1311) is formed obliquely to the first predetermined direction and inclined towards the second side of the staple magazine, and wherein the guide surface (1311) is configured such that when the guide surface moves in the first predetermined direction, the staple (4) is pushed by the guide surface towards the first side of the staple magazine. [14] Staple magazine assembly according to claim 11, characterized by that on the second side of the staple magazine there is a guide groove (117) which extends along the first predetermined direction, wherein the sliding element (13) further comprises a guide portion (132), and wherein the guide groove 117 is slidably fitted with the guide portion (132) of the sliding element (13). [15] Staple magazine assembly according to claim 11, characterized byin that the staple magazine assembly further comprises a staple seat (15) and a staple (4), wherein the staple seat (15) is received in the staple groove (1141) and the staple pushing groove (116), and wherein the staple seat (15) comprises two interconnected sub-staple seats (151), and wherein the two sub-staple seats (151) are each slidably fitted with the staple grooves (1141) in two adjacent staple groove groups (114) so ​​that the staple seat (15) is movable relative to the staple magazine in the second predetermined direction, and wherein a staple (4) is arranged at the end of the respective sub-staple seat (151) facing the first side of the staple magazine. [16] Staple magazine assembly according to one of claims 10 to 15, characterized byin that the sliding element (13) is configured such that the sliding element is movable relative to the staple magazine in the first predetermined direction, wherein the staple magazine assembly further comprises an elastic limiting unit (12), and wherein an installation hole (111) is provided on the staple magazine, and wherein the elastic limiting unit (12) is mounted on the installation hole (111), and wherein the elastic limiting unit (12) comprises an elastic force transmission structure (123), a triggering section (121), and a limiting section (122), which triggering section and which limiting section are located at both ends of the elastic force transmission structure (123), and wherein the triggering section (121) and the limiting section (122) are each located near the inner and outer ends of the elastic force transmission structure (123).the outer end of the installation hole (111), and wherein the trigger section (121) is located in a staple-pushing movement path of the sliding element (13) along the first predetermined direction, and wherein the elastic limiting unit (12) is configured to be subjected to elastic deformation when the trigger section (121) is pushed by the sliding element, whereby the trigger section (121) retreats from the staple-pushing movement path, and wherein the elastic force transmission structure (123) is configured to exert an elastic driving force on a limiting section (121) when the trigger section (121) retreats from the staple-pushing movement path, so that the limiting section (121) protrudes beyond the outer end of the installation hole (111). [17] Staple magazine assembly according to claim 16, characterized byin that the staple magazine is provided with the trigger section (121) at a limit position at the end of the movement path of the pushing element (13) used for staple pushing, and / or wherein the elastic limiting unit (12) has a spring plate structure, and wherein a fixed end of the spring plate structure is fixed to the edge of the installation hole (111), and wherein the elastic force transmission structure (123), the trigger section (121) and the limiting section (122) are all formed on the spring plate structure. [18] Staple magazine assembly according to claim 17, characterized byin that the bending of the spring plate structure forms a first section (12a), a second section (12b) and a third section (12c), which are connected sequentially one after the other, wherein the first section (12a) forms the fastened end of the spring plate structure and is firmly connected to the staple magazine, and wherein the second section (12b) and the third section (12c) are each arranged inclined to the first section (12a), and wherein the third section (12c) is arranged obliquely to the second section (12b), and wherein the opening direction of the angle formed by the second section (12b) and the third section (12c) corresponds to the direction of the depth of the installation hole (111), and wherein the connecting section between the second section (12b) and the third section (12c) forms the trigger section 121, and wherein the third section (12c) forms the elastic force transmission structure (123). [19] Staple magazine assembly according to claim 17, characterized by in that the staple magazine assembly further comprises a staple magazine cover (14) which is detachably connected to the staple magazine, wherein the staple magazine cover (14) forms a receiving space, and wherein the staple magazine is arranged in the receiving space of the staple magazine cover (14), and wherein the staple magazine cover (14) is provided with a through hole (141) which is connected to the installation hole (111) and is configured for the passage of the limiting portion (122), and wherein the inner wall of the staple magazine cover (14) and the outer wall of the staple magazine clamp the attached end of the spring plate structure. [20] Surgical stapler, characterized by that the surgical stapler comprises a staple cartridge assembly according to any one of claims 10 to 19.

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