Staple forming part and surgical stapler using the same

Abstract

The present invention discloses a stapler and a surgical stapler using the same. The stapler has a molding body, the molding body has a plurality of molding grooves, each molding groove is recessed from the mating surface of the molding body toward the inside of the molding body, and the stapler comprises: a plurality of first anti-slip parts, which are arranged on the mating surface, and the plurality of first anti-slip parts protrude from the mating surface respectively. The present invention provides an anti-slip part protruding from the mating surface on the mating surface of the stapler to increase the friction between the mating surface of the stapler and the tissue to be stapled, thereby solving the slipping problem in the tissue suturing operation.

Description

Technical Field

[0001] The invention relates to a surgical device, in particular to a nail anvil assembly and a surgical stapler thereof, belonging to the field of medical instruments. Background Art

[0002] Various surgical staplers and laparoscopic surgical staplers are used to replace the needle and thread manual suturing operation in surgery, and are being widely used in surgery to sew the human digestive tract organs, respiratory tract organs and urogenital organs, which can reduce the operation time and improve the quality of the operation.

[0003] The components of the suturing mechanism of the surgical stapler include: a staple cartridge assembly and a staple anvil assembly. The staple cartridge assembly consists of a staple cartridge body, a staple cartridge rack equipped with a staple cartridge, a staple pusher block in the staple cartridge body, a staple and a cutting knife, wherein the cutting knife can be installed according to the use requirements. The staple anvil assembly consists of a staple anvil, a staple anvil rack equipped with a staple anvil, and a staple forming groove arranged on the end surface of the staple anvil and corresponding to the position of the staple in the staple cartridge. When using the surgical stapler, the closing mechanism is operated to achieve the required clamping thickness between the staple anvil and the staple cartridge so as to clamp the tissue to be sutured between the staple anvil and the staple cartridge. After the tissue to be sutured is clamped, the firing mechanism can be operated to push out the staple in the staple cartridge to achieve the surgical purpose of suturing the tissue. For surgeries that also require cutting of the sutured tissue, the cutting knife can be pushed out while the suture staple in the staple cartridge is pushed out, or the target tissue can be cut with a scalpel. After the suturing operation is completed, the closing mechanism is operated to release the target tissue so as to withdraw the surgical stapler. The function of the suturing mechanism of the surgical stapler during use of the surgical stapler is to clamp the tissue to be sutured between the staple anvil and the staple magazine, and then push the staples out of the staple magazine to penetrate the clamped tissue to be sutured and directly reach the staple forming groove on the staple anvil, so that the U-shaped staples are bent into a B shape, thereby achieving the surgical purpose of suturing the tissues.

[0004] In the prior art, there are protrusions on the molding surface of the staple cartridge to prevent tissue from sliding. In the jaw assembly including the staple cartridge and the staple anvil, the staple anvil needs to rotate when clamping and squeezing the tissue, and it is easier to cause displacement between the tissue attached to its molding surface. Therefore, the tissue is easier to slide on the molding surface of the staple anvil than on the molding surface of the staple cartridge, and the sliding of the tissue on the molding surface of the staple anvil precedes the sliding of the molding surface of the staple cartridge. The sliding of the tissue on the molding surface of the staple anvil will cause the position of the staples coming out of the tissue to be inaccurate, thereby affecting the accuracy of the suturing position and the suturing effect, and even causing suturing failure.

[0005] In view of this, the present invention improves the structure of the suturing mechanism to solve the problem that the tissue to be sutured is easy to slide when clamped between the anvil assembly and the staple cartridge assembly. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention aims to provide a new staple forming member suitable for a surgical stapler, which aims to solve the problem of slippage of clamped tissues and improve the staple forming effect.

[0007] The present invention provides a staple forming part for a surgical stapler. The staple forming part comprises a forming body having a plurality of forming grooves. Each forming groove is recessed from a mating surface of the forming body toward the interior of the forming body. The staple forming part also comprises: a plurality of first anti-slip parts, which are arranged on the mating surface and protrude from the mating surface respectively.

[0008] As an optional technical solution, the first anti-slip parts have the same height of 0.5 mm to 0.8 mm.

[0009] As an optional technical solution, the plurality of first anti-slip members extend respectively along the lateral direction of the staple forming member.

[0010] As an optional technical solution, the plurality of first anti-slip members are respectively arranged adjacent to the plurality of forming grooves.

[0011] As an optional technical solution, the first anti-slip member is arranged along the longitudinal direction of the staple forming member, and the first anti-slip member is provided on at least one end of each forming groove.

[0012] As an optional technical solution, the first anti-slip member has a first side surface, the molding groove has a first groove wall, and the first side surface and the first groove wall are smoothly connected to each other.

[0013] As an optional technical solution, there is an angle between the first side surface and the matching surface, and the angle is greater than 0 degree and less than or equal to 90 degrees.

[0014] As an optional technical solution, a second anti-slip member is further included, wherein the second anti-slip member is disposed on the mating surface and extends along the longitudinal direction of the staple former.

[0015] As an optional technical solution, the second anti-slip member is a continuous anti-slip structure or a discontinuous anti-slip structure.

[0016] As an optional technical solution, the second anti-slip member is connected to the first anti-slip member, or the second anti-slip member is not connected to the first anti-slip member.

[0017] As an optional technical solution, anti-slip patterns are respectively arranged on the top surfaces of the plurality of first anti-slip members.

[0018] The present invention further provides a staple forming part for a surgical stapler, the staple forming part comprising a forming body, the forming body comprising an upper surface and a forming groove, the staple forming part further comprising a protruding portion, the protruding portion protruding upward from the upper surface, the forming groove being recessed downward from the top surface of the protruding portion, the bottom of the forming groove being higher than, flush with, or lower than the upper surface of the forming body; the protruding portion is a non-slip part for preventing tissue from sliding.

[0019] The present invention also provides a surgical stapler, comprising a staple former, wherein the staple former is the staple former as described above.

[0020] Compared with the prior art, the present invention provides an anti-slip member protruding from the mating surface of the staple forming member to increase the friction between the mating surface of the staple forming member and the tissue to be stapled, thereby improving the effect of solving the slipping problem in the tissue suturing operation. In addition, the anti-slip member includes a first anti-slip member extending transversely and / or a second anti-slip member extending longitudinally, the first anti-slip member and the second anti-slip member are respectively arranged close to the groove wall of the forming groove, and the first anti-slip member extending transversely has the effect of guiding the staple into the forming groove, which is beneficial to the formation of the staple during the suturing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a staple forming member according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic cross-sectional view of a staple forming part;

[0023] Figure 3 is a partial cross-sectional schematic diagram of a staple forming member according to another embodiment of the present invention;

[0024] Figure 4 A partial cross-sectional schematic diagram of a staple forming member according to another embodiment of the present invention;

[0025] Figure 5 It is a partial enlarged schematic diagram of a staple forming member according to another embodiment of the present invention;

[0026] FIG. 6A to FIG. 6C It is a partial enlarged schematic diagram of a staple forming member according to another embodiment of the present invention;

[0027] Figure 7 It is a partial enlarged schematic diagram of a staple forming member according to another embodiment of the present invention;

[0028] FIG. 8A to FIG. 8C FIG. 4 is a schematic diagram of a forming groove of a staple forming member according to another embodiment of the present invention. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0031] Figure 1 is a schematic structural diagram of a staple forming member according to an embodiment of the present invention, Figure 2 for Figure 1 Schematic cross-section of the staple forming part.

[0032] like Figure 1 and Figure 2 As shown, the stapler forming part 100 of the present invention is suitable for a surgical stapler (not shown). The stapler forming part 100 has a forming body 110, and the forming body 110 has a plurality of forming grooves 120. Each forming groove 120 is recessed from the mating surface 111 of the forming body 110 toward the inside of the forming body 110, that is, in a direction perpendicular to the forming body 110, the lowest point of each forming groove 120 is lower than the mating surface 111. Among them, a plurality of first anti-slip members 140 are arranged on the mating surface 111, and the plurality of first anti-slip members 140 protrude from the mating surface 111 respectively. Preferably, each first anti-slip member 140 has a height H1, and the height H1 is, for example, 0.5 mm to 0.8 mm. Among them, the height H1 is defined as the vertical distance between the mating surface 111 and the top surface 150 of the first anti-slip member 140. The stapler forming part 100 of the present invention is a staple anvil assembly.

[0033] In this embodiment, the plurality of first anti-slip members 140 have the same height H1, but are not limited thereto. The plurality of first anti-slip members 140 may have a plurality of different heights, the maximum height of the plurality of different heights being equal to 0.8 mm, and the minimum height of the plurality of different heights being equal to 0.5 mm. It should be noted that when the height H1 of the first anti-slip member 140 is between 0.5 mm and 0.8 mm, the first anti-slip member 140 can achieve the desired effect of preventing the clamped tissue from slipping, and at the same time will not affect the suturing operation of the surgical stapler, that is, the staple former 100 will not interfere with the staple cartridge assembly, causing the staple former 100 and the staple cartridge assembly to have a poor closure problem.

[0034] like Figure 1 As shown, a plurality of first anti-slip members 140 extend along the transverse direction Z2 of the staple forming member 100, and a plurality of first anti-slip members 140 are arranged on the mating surface 111 along the longitudinal direction Z1 of the staple forming member 100. Preferably, a plurality of first anti-slip members 140 arranged on the mating surface 111 along the longitudinal direction Z1 are arranged into a plurality of strip structures; wherein the transverse direction Z2 is parallel to the extension direction of the short side of the mating surface 111 of the forming body 110, and the longitudinal direction Z1 is parallel to the extension direction of the long side of the mating surface 111 of the forming body 110, and the mating surface 111 is substantially rectangular. In other embodiments of the present invention, the plurality of first anti-slip members 140 may also include, for example, a plurality of dot-shaped protrusions, and the plurality of dot-shaped protrusions are arranged on the mating surface 111 along the longitudinal direction Z1.

[0035] In this embodiment, a plurality of first anti-slip members 140 extending along the transverse direction Z2 of the staple forming member 100 are respectively disposed adjacent to a plurality of molding grooves 120. Specifically, in the longitudinal direction Z1, the first anti-slip members 140 are disposed at opposite ends of each molding groove 120. In other words, two first anti-slip members 140 are disposed on each molding groove 120, wherein two adjacent molding grooves 120 share one first anti-slip member 140. This is because the staple forming member 100 is, for example, made by injection molding or 3D printing, and the plurality of first anti-slip members 140, the plurality of molding grooves 120 and the molding body 110 are integrally formed. In the longitudinal direction Z1, the molding grooves 120 are connected to each other through connecting portions, and when the first anti-slip member 140 is disposed in the region where the connecting portion is located, the two adjacent molding grooves 120 share one first anti-slip member 140, that is, any two adjacent molding grooves 120 have a total of three first anti-slip members 140.

[0036] In a preferred embodiment of the present invention, Figure 2As shown, the first anti-slip member 140 has a first side surface 141, and the extension direction of the first side surface 141 is along the transverse direction Z2 and perpendicular to the matching surface 111 or the molding body 110. The molding groove 120 has a first groove wall 124, wherein one of the two opposite first side surfaces 141 is connected to the first groove wall 124 of the molding groove 120, which is equivalent to the first side surface 141 being arranged on the extension part of the first groove wall 124. The molding groove 120 has a first molding recess 121 and a second molding recess 122 arranged at intervals, and a spacer 123 is arranged between the first molding recess 121 and the second molding recess 122, and the spacer 123 makes the first molding recess 121 and the second molding recess 122 independent of each other. The first groove wall 124 of the molding groove 120 refers to one of the two groove walls in the molding groove 120 that are opposite to the spacer 123 and away from the spacer 123. Since the first anti-slip member 140 is disposed on the extended portion of the first groove wall 124 of the molding groove 120, the height of the edge of the molding groove 120 is increased. After the staples pass through the tissue, they contact the first anti-slip member 140, which is convenient for guiding the staples into the molding groove 120, and the molding effect is better. In addition, during the staple molding process, the first side surface 141 of the first anti-slip member 140 can guide the staples into the first molding recess 121 and the second molding recess 122. It is worth noting that Figure 1 and Figure 2 For the sake of convenience, the surface of the first anti-slip member 140 away from the operating end of the surgical stapler is defined as the first side surface 141, and the groove wall of the two groove walls of the molding groove 120 close to the operating end of the surgical stapler is defined as the first groove wall 124, but it is not limited to this. In other embodiments of the present invention, the surface of the first anti-slip member 140 close to the operating end of the surgical stapler can be defined as the first side surface, and the groove wall of the two groove walls of the molding groove 120 away from the operating end of the surgical stapler is defined as the first groove wall. That is, the present invention does not particularly limit the positions of the first side surface 141 and the first groove wall 124, as long as the first side surface 141 and the first groove wall 124 are connected to each other.

[0037] However, it should be noted that, for the sake of convenience, the present invention defines the forming groove 120 as having a groove wall 124. In actual use, there is no special distinction between the groove wall 124 and the first side surface 141 of the first anti-slip member 140. In this embodiment, the first side surface 141 is perpendicular to the matching surface 111, but the present invention is not limited thereto.

[0038] The operating end of the surgical stapler in the present invention is located at the right end along the longitudinal direction Z1 in each of the drawings.

[0039] Figure 3 is a partial cross-sectional schematic diagram of a staple forming member according to another embodiment of the present invention; Figure 4 FIG. 2 is a partial cross-sectional schematic diagram of a staple forming member according to another embodiment of the present invention. Figure 3 As shown, in another embodiment of the present invention, the first side surface 142 of the first anti-slip member 140' has an angle with the matching surface, and the angle is, for example, an acute angle, or the first side surface 142 is an inclined surface. Figure 4 As shown, in another embodiment of the present invention, the first side surface 143 of the first anti-slip member 140″ is a curved arc surface, and the curved arc surface is smoothly connected to the first groove wall 124 of the molding groove 120. Preferably, the curved arc surface and the molding arc surface of the second molding recess 122 of the molding groove 120 form a smooth arc structure.

[0040] Figure 5 FIG. 1 is a partially enlarged schematic diagram of a staple forming member according to another embodiment of the present invention. In order to increase the anti-slip capability of the first anti-slip member 140, as shown in FIG. Figure 5 As shown, the top surface 150 (eg, Figure 1 The anti-slip pattern 160 is provided on the top surface 150, and the anti-slip pattern 160 is, for example, a protrusion protruding from the top surface 150, that is, the protrusion protrudes from the top surface 150 (as shown in FIG. Figure 1 As shown in FIG. 1 ), the groove protrudes in a direction away from the mating surface 111, or a groove is formed from the top surface 150 and is recessed from the top surface (as shown in FIG. Figure 1 As shown in the figure, the protrusions and grooves may be concave toward the mating surface 111.

[0041] FIG. 6A to FIG. 6C This is a partially enlarged schematic diagram of a staple forming member according to another embodiment of the present invention.

[0042] like FIG. 6A to FIG. 6C As shown, the staple forming member may further include a second anti-slip member, which extends, for example, along the longitudinal direction Z1 of the staple forming member 100, wherein the second anti-slip member includes, for example, a continuous anti-slip structure 172 and / or includes a plurality of discontinuous anti-slip structures 170, 171. In other words, the second anti-slip member is disposed between a plurality of strip structures arranged by a plurality of first anti-slip members 140. The second anti-slip member extends along the longitudinal direction Z1, and may be connected to one, two or more first anti-slip members 140, or may not be connected to the first anti-slip member 140. In this embodiment, the second anti-slip member is disposed near the second groove wall of the forming groove 120, the second groove wall extends along the longitudinal direction Z1 and is adjacent to the first groove wall 124, and the two edges of the second groove wall are respectively connected to two opposite first groove walls 124. The height of the second anti-slip member is similar to that of the first anti-slip member 140, for example, 0.5 mm to 0.8 mm.

[0043] like Fig. 6AAs shown, the second anti-slip member includes, for example, a plurality of discontinuous anti-slip structures 170, and opposite ends of each anti-slip structure 170 are respectively connected to the first anti-slip member 140, wherein the first anti-slip members 140 at the two ends of the anti-slip structure 170 extend in opposite directions, so that a "Z-shaped" anti-slip portion is formed between the anti-slip structure 170 and the first anti-slip member 140; or, as Figure 6B As shown in , the second anti-slip member, for example, includes a plurality of discontinuous anti-slip structures 171, and the opposite ends of each anti-slip structure 171 are respectively connected to the first anti-slip member 140, wherein the first anti-slip members 140 on both ends of the anti-slip structure 170 extend in the same direction, so that a "U-shaped" anti-slip portion is formed between the anti-slip structure 171 and the first anti-slip member 140; or, as Figure 6C As shown, the second anti-slip member includes, for example, a continuous anti-slip structure 172, with the anti-slip structure 172 as the center and a plurality of first anti-slip members 140 respectively distributed on both sides of the anti-slip structure 172 and arranged in a staggered manner, so that a "fishbone-shaped" anti-slip portion is formed between the anti-slip structure 172 and the first anti-slip members 140. It should be noted that FIG. 6A to FIG. 6C The second anti-slip member is only shown in a partial area of ​​the mating surface 111, but the present invention does not limit the area where the second anti-slip member is set. The second anti-slip member can be set in other areas of the mating surface 111 according to actual use requirements. In the above embodiment, the staple forming member is used for a surgical stapler, and the staple forming member has a forming body, the forming body has a mating surface and a plurality of forming grooves, each of which is recessed from the mating surface of the forming body toward the inside of the forming body, and the staple forming member also includes a plurality of first anti-slip members, which are arranged on the mating surface, and the plurality of first anti-slip members protrude from the mating surface respectively.

[0044] Figure 7 FIG. 2 is a partially enlarged schematic diagram of a staple forming member according to another embodiment of the present invention. Figure 7 As shown, the second anti-slip member, for example, includes a plurality of discontinuous anti-slip structures 180, and the opposite ends of each anti-slip structure 180 are respectively connected to the first anti-slip member 140, and two parallel and oppositely arranged anti-slip structures 180 are respectively connected to the three first anti-slip members 140, so as to form another "U-shaped" anti-slip portion; the opening of the other "U-shaped" anti-slip portion is parallel to the horizontal Z2 of the staple forming member 100.

[0045] FIG. 8A to FIG. 8C FIG. 1 is a schematic diagram of a forming groove of a staple forming member according to another embodiment of the present invention, for the purpose of simple illustration. FIG. 8A to FIG. 8C FIG. 1 only shows the forming groove 120 in which the first anti-slip member 140 and the second anti-slip member of different structure are disposed.

[0046] like Fig. 8AAs shown, a pair of first anti-slip members 140 and a pair of second anti-slip members are disposed around the molding groove 120, and the first and last ends of each first anti-slip member 140 are respectively connected to a pair of second anti-slip members, and the first and last ends of each second anti-slip member are respectively connected to a pair of first anti-slip members 140, wherein each second anti-slip member has a long strip-shaped anti-slip structure 190. In this embodiment, the pair of first anti-slip members 140 and the pair of second anti-slip members together constitute a rectangular anti-slip member, and the rectangular anti-slip member is disposed around the molding groove 120.

[0047] like Figure 8B As shown, the molding groove 120 has two opposite ends, and the first U-shaped anti-slip member and the second U-shaped anti-slip member are respectively arranged at the opposite ends of the molding groove 120. The opening of the first U-shaped anti-slip member is opposite to the opening of the second U-shaped anti-slip member. The first U-shaped anti-slip member and the second U-shaped anti-slip member respectively include a first anti-slip member 140 and a pair of second anti-slip members. The pair of second anti-slip members are parallel and opposite to each other. The pair of second anti-slip members are respectively arranged at the two ends of the first anti-slip member 140, and each second anti-slip member includes an anti-slip structure 191; wherein, there is a hollow portion 200 between the first U-shaped anti-slip member and the second U-shaped anti-slip member, and it can also be regarded that there is a hollow portion 200 between the anti-slip structure 191 of the first U-shaped anti-slip member and the anti-slip structure 191 of the second U-shaped anti-slip member; that is, in this embodiment, the second anti-slip member has multiple discontinuous anti-slip structures.

[0048] like Figure 8C As shown, a first anti-slip member 140 and a second anti-slip member are arranged around the molding groove 120. The first anti-slip member 140 is, for example, arranged at two opposite ends of the molding groove 120. The two ends of the second anti-slip member are respectively connected to the first anti-slip member 140. The second anti-slip member includes a continuous anti-slip structure 193 and a discontinuous anti-slip structure 192. The continuous anti-slip structure 193 and the discontinuous anti-slip structure 192 are stacked. The continuous anti-slip structure 193 is arranged between the discontinuous anti-slip structure 192 and the matching surface 111 (such as Figure 1 In other words, the discontinuous anti-slip structure 192 is stacked on top of the continuous anti-slip structure 193. This second anti-slip member includes both the discontinuous anti-slip structure 192 and the continuous anti-slip structure 193, so that the side surface of the second anti-slip member away from the mating surface 111 has a concave-convex surface, which is beneficial to increase the friction between the tissue and reduce the slipping of the staple forming member.

[0049] In another embodiment of the present invention, a staple forming part is used for a surgical stapler, and the staple forming part has a forming body. The forming body has an upper surface, and a protruding portion protrudes upward from the upper surface, and the protruding portion forms part or all of the groove wall of the forming groove along the up-down direction, that is, the forming groove is recessed downward from the top surface of the protruding portion, and the bottom of the forming groove can be higher than, flush with, or lower than the upper surface of the forming body. In this way, the protruding portion is a non-slip member to prevent tissue sliding. In this embodiment, the top surface of the protruding portion is a mating surface. It should be noted that the protruding portion needs to avoid the cutting groove in the middle of the staple forming part. Since the top surface of the protruding portion constitutes a mating surface that fits the tissue, the protruding portion will not interfere with the staple cartridge assembly. Among them, the "upper" and "lower" directions refer to directions that are both perpendicular to the longitudinal Z1 and transverse Z2 of the staple forming part.

[0050] The present invention further provides a surgical stapler (not shown), and the staple former is suitable for the surgical stapler.

[0051] In summary, the present invention provides an anti-slip member protruding from the mating surface of the staple forming member to increase the friction between the mating surface of the staple forming member and the tissue to be stapled, thereby solving the slipping problem in the tissue suturing operation. In addition, the anti-slip member includes a first anti-slip member extending transversely and / or a second anti-slip member extending longitudinally, the first anti-slip member and the second anti-slip member are respectively arranged close to the groove wall of the forming groove, and the first anti-slip member extending transversely has the effect of guiding the staple into the forming groove, which is beneficial to the formation of the staple during the suturing operation.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0055] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A staple forming part for a surgical stapler, the staple forming part comprising a forming body, the forming body having a plurality of forming grooves, the bottom of each of the forming grooves being lower than the mating surface of the forming body, characterized in that: The staple forming part also includes: A plurality of first anti-slip members for preventing tissue from sliding are arranged on the mating surface, and the plurality of first anti-slip members protrude from the mating surface respectively; the forming groove is recessed downward from the top surface of the first anti-slip member, so that, in response to the staple contacting the first anti-slip member, the first anti-slip member guides the staple into the forming groove.

2. The staple forming member according to claim 1, characterized in that: The height of the first anti-slip member is 0.5 mm to 0.8 mm.

3. The staple forming member according to claim 1, characterized in that: The plurality of first anti-slip members extend along the lateral direction of the staple forming member respectively.

4. The staple forming member according to claim 3, characterized in that: The plurality of first anti-slip members are respectively disposed adjacent to the plurality of forming grooves.

5. The staple forming member according to claim 3, characterized in that: The first anti-slip member is arranged along the longitudinal direction of the staple forming member, and the first anti-slip member is arranged on at least one end of each forming groove.

6. The staple forming member according to claim 5, characterized in that: The first anti-slip member has a first side surface, the molding groove has a first groove wall, and the first side surface and the first groove wall are smoothly connected to each other.

7. The staple forming member according to claim 6, characterized in that: An included angle is formed between the first side surface and the matching surface, and the included angle is greater than 0 degree and less than or equal to 90 degrees.

8. The staple forming member according to claim 3, characterized in that: The invention also comprises a second anti-slip part, which is arranged on the anastomotic surface and extends along the longitudinal direction of the staple forming part.

9. The staple former according to claim 8, characterized in that: The second anti-slip member is a continuous anti-slip structure or a discontinuous anti-slip structure.

10. The staple former according to claim 8, characterized in that: The second anti-slip member is connected to the first anti-slip member, or the second anti-slip member is not connected to the first anti-slip member.

11. The staple former according to claim 1, characterized in that: Anti-slip patterns are respectively arranged on the top surfaces of the plurality of first anti-slip members.

12. A staple forming part for a surgical stapler, the staple forming part comprising a forming body, the forming body comprising an upper surface and a forming groove, characterized in that: The staple forming member further comprises a protruding portion, the protruding portion protrudes upward from the upper surface, the forming groove is recessed downward from the top surface of the protruding portion, and the bottom of the forming groove is higher than or flush with the upper surface of the forming body; the protruding portion is a non-slip member for preventing tissue from sliding; The anti-slip member includes a plurality of first anti-slip members for preventing tissue from sliding, which are arranged on the mating surface, and the plurality of first anti-slip members protrude from the mating surface respectively; the forming groove is recessed downward from the top surface of the first anti-slip member, so that, in response to the suture nail contacting the first anti-slip member, the first anti-slip member guides the suture nail into the forming groove.

13. A surgical stapler, comprising a staple forming member, characterized in that: The staple former is the staple former described in any one of claims 1-12.

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