CN110575212A - Staple forming piece and surgical stapler using same - Google Patents
Staple forming piece and surgical stapler using same Download PDFInfo
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- CN110575212A CN110575212A CN201810593346.5A CN201810593346A CN110575212A CN 110575212 A CN110575212 A CN 110575212A CN 201810593346 A CN201810593346 A CN 201810593346A CN 110575212 A CN110575212 A CN 110575212A
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- 230000013011 mating Effects 0.000 claims abstract description 34
- 230000003872 anastomosis Effects 0.000 claims description 9
- 238000009958 sewing Methods 0.000 abstract description 3
- 238000000465 moulding Methods 0.000 description 16
- 230000007246 mechanism Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 230000002265 prevention Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 3
- 238000010304 firing Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses a staple forming piece and a surgical anastomat using the same, wherein the staple forming piece is provided with a forming body, the forming body is provided with a plurality of forming grooves, each forming groove is sunken from the matching surface of the forming body to the inside of the forming body, and the staple forming piece comprises: a plurality of first stopper pieces disposed on the mating surface, the plurality of first stopper pieces protruding from the mating surface, respectively. The invention improves the friction force between the inosculating surface of the staple forming piece and the tissue to be inosculated by arranging the anti-slip piece which protrudes out of the inosculating surface on the inosculating surface of the staple forming piece, thereby solving the problem of slippage in the tissue sewing operation.
Description
Technical Field
The invention relates to a surgical operation device, in particular to a nail anvil assembly and a surgical anastomat thereof, and belongs to the field of medical instruments.
background
Various surgical suturing devices and endoscopic surgical suturing devices are used for replacing the needle-thread free-hand suturing operation in the surgical operation, are widely used for suturing human digestive tract organs, respiratory tract organs and urogenital organs in the surgical operation, can reduce the operation time and improve the operation quality.
The components of the suturing mechanism of the surgical suturing device comprise: a nail bin component and a nail anvil component. The nail bin assembly consists of a nail bin body, a nail bin frame provided with the nail bin, a nail pushing block, a suturing nail and a cutting knife, wherein the cutting knife can be installed according to the use requirement. The nail anvil component consists of a nail anvil, a nail anvil frame provided with the nail anvil and a suturing nail forming groove which is arranged on the end surface of the nail anvil and corresponds to the position of a suturing nail in the nail bin. In use of the surgical stapler, the closure mechanism is operated to achieve a desired clamping thickness between the anvil and the staple cartridge in order to clamp tissue to be stapled between the anvil and the staple cartridge. After the sutured tissue is clamped, the firing mechanism can be operated to push out the suturing nails in the nail bin, so that the purpose of suturing the tissue is achieved. For the operation needing to cut the sutured tissue, the cutting knife can be pushed out to cut the clamped target tissue while the firing mechanism is operated to push out the suturing nails in the nail bin, and the surgical knife can also be used for cutting the target tissue. Upon completion of the stapling operation, the closure mechanism is operated to release the target tissue for withdrawal of the surgical stapler. The suturing mechanism of the surgical suturing device has the following functions in the using process of the surgical suturing device: the tissue to be sutured is clamped between the nail anvil and the nail bin, and then the suturing nail is pushed out from the nail bin and penetrates through the clamped tissue to be sutured to directly abut against the suturing nail forming groove on the nail anvil, so that the U-shaped suturing nail is bent into a B shape, and the purpose of suturing the tissue is achieved.
In the prior art, the staple cartridge has protrusions on its molding surface to prevent tissue slippage. In a jaw assembly comprising a nail bin and a nail anvil, the nail anvil needs to rotate when clamping and squeezing tissues, and displacement is easily generated between the nail anvil and the tissues attached to the forming surface of the nail anvil, so the tissues can slide on the forming surface of the nail anvil relative to the forming surface of the nail bin more easily, and the sliding of the tissues on the forming surface of the nail anvil is prior to the sliding of the tissues on the forming surface of the nail bin, so that the sliding of the tissues on the forming surface of the nail anvil causes inaccurate nail discharging positions of suturing nails penetrating out of the tissues, thereby influencing the accuracy of the suturing positions and the suturing effect, and even causing suturing failure.
In view of the above, the present invention aims to solve the problem that the tissue to be sutured is clamped between the nail anvil assembly and the nail bin assembly and is easy to slide through the structural improvement of the suturing mechanism.
Disclosure of Invention
In view of the deficiencies of the prior art, the present invention is directed to a novel staple forming member suitable for use in a surgical stapler, which is designed to solve the problem of slippage of the clamped tissue and to improve the staple forming effect.
The present invention provides a staple forming member for a surgical stapler, the staple forming member comprising a forming body having a plurality of forming grooves, each forming groove being recessed from an anastomosis surface of the forming body towards an interior of the forming body, the staple forming member further comprising: a plurality of first stopper pieces disposed on the mating surface, the plurality of first stopper pieces protruding from the mating surface, respectively.
Alternatively, the first anti-slip pieces have the same height of 0.5 mm to 0.8 mm.
Alternatively, the first plurality of slip stoppers may extend in a transverse direction of the staple forming member.
As an optional technical solution, the plurality of first anti-slip pieces are respectively disposed adjacent to the plurality of forming grooves.
As an optional technical scheme, the first anti-slip piece is arranged along the longitudinal direction of the staple forming piece, and the first anti-slip piece is arranged on at least one end of each forming groove.
As an optional technical solution, the first anti-slip piece has a first side surface, the forming groove has a first groove wall, and the first side surface and the first groove wall are smoothly connected with each other.
As an optional technical solution, an included angle is formed between the first side surface and the fitting surface, and the included angle is greater than 0 degree and less than or equal to 90 degrees.
Optionally, the staple forming device further comprises a second anti-slip member disposed on the mating surface and extending along a longitudinal direction of the staple forming member.
Alternatively, the second anti-slip member is a continuous anti-slip structure or a discontinuous anti-slip structure.
As an optional technical solution, the second anti-slip member is connected with the first anti-slip member, or the second anti-slip member is not connected with the first anti-slip member.
As an optional technical solution, the top surfaces of the plurality of first anti-slip pieces are respectively provided with anti-slip threads.
The invention also provides a staple forming piece for a surgical stapler, the staple forming piece comprising a forming body, the forming body comprising an upper surface and a forming groove, the staple forming piece further comprising a protruding part, the protruding part protruding upwards from the upper surface, the forming groove being recessed downwards from the top surface of the protruding part, 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 backstop to prevent tissue from slipping.
The invention also provides a surgical stapler comprising a staple former as described above.
compared with the prior art, the invention improves the friction force between the anastomosis surface of the staple forming piece and the tissue to be anastomosed and improves the effect of solving the slipping problem in the tissue suturing operation by arranging the anti-slip piece which protrudes from the anastomosis surface on the anastomosis surface of the staple forming piece. In addition, the anti-slip piece comprises a first anti-slip piece extending transversely and/or a second anti-slip piece extending longitudinally, the first anti-slip piece and the second anti-slip piece are respectively arranged close to the groove wall of the forming groove, and the first anti-slip piece extending transversely has the effect of guiding the staples to enter the forming groove and is beneficial to forming the staples in the sewing operation.
Drawings
FIG. 1 is a schematic structural view of a staple forming member according to one embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the seam nail molding of FIG. 1;
FIG. 3 is a schematic partial cross-sectional view of a staple forming member in accordance with another embodiment of the present invention;
FIG. 4 is a schematic partial cross-sectional view of a staple forming member in accordance with yet another embodiment of the present invention;
FIG. 5 is an enlarged, fragmentary schematic view of a staple forming member according to yet another embodiment of the present invention;
FIGS. 6A-6C are enlarged partial schematic views of a staple forming member in accordance with yet another embodiment of the present invention;
FIG. 7 is an enlarged, fragmentary schematic view of a staple forming member according to yet another embodiment of the present invention;
FIGS. 8A-8C are schematic views of forming slots for staple forming articles according to yet another embodiment of the present invention.
Detailed Description
reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
FIG. 1 is a schematic structural view of a staple forming member according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view of the staple forming member shown in FIG. 1.
As shown in fig. 1 and 2, the staple forming member 100 of the present invention is suitable for a surgical stapler (not shown), the staple forming member 100 has a forming body 110, the forming body 110 has a plurality of forming grooves 120, each forming groove 120 is recessed from a mating surface 111 of the forming body 110 toward the inside of the forming body 110, i.e., the lowest point of each forming groove 120 is lower than the mating surface 111 in a direction perpendicular to the forming body 110. Wherein, a plurality of first stopper pieces 140 are disposed on the mating surface 111, and a plurality of first stopper pieces 140 respectively protrude from the mating surface 111, preferably, each first stopper piece 140 has a height H1, and the height H1 is, for example, 0.5 mm to 0.8 mm. Wherein the height H1 is defined as the vertical distance from the mating surface 111 to the top surface 150 of the first slider member 140. The staple forming member 100 of the present invention is an anvil assembly.
In the embodiment, the first stopper members 140 have the same height H1, but not limited thereto. The plurality of first antislip members 140 may have a plurality of different heights, a largest height of the plurality of different heights being equal to 0.8 mm, and a smallest 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 0.5 mm to 0.8 mm, the first anti-slip member 140 can achieve the desired prevention of the clamped tissue from slipping, and at the same time, the suturing operation of the surgical stapler is not affected, i.e., the staple forming member 100 does not interfere with the cartridge component, so that the staple forming member 100 and the cartridge component are not closed properly.
As shown in fig. 1, the plurality of first stopper members 140 extend along the transverse direction Z2 of the staple forming member 100, and the plurality of first stopper members 140 are arranged on the mating surface 111 along the longitudinal direction Z1 of the staple forming member 100, preferably, the plurality of first stopper members 140 are arranged on the mating surface 111 along the longitudinal direction Z1 in a plurality of stripe structures; the transverse direction Z2 is parallel to the extending direction of the short side of the mating surface 111 of the forming body 110, the longitudinal direction Z1 is parallel to the extending 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 stopper members 140 may further include a plurality of dot-shaped protrusions arranged on the mating surface 111 along the longitudinal direction Z1, for example.
In the present embodiment, a plurality of first stopper members 140 extending along the transverse direction Z2 of the staple forming member 100 are respectively disposed adjacent to the plurality of forming grooves 120. Specifically, in the longitudinal direction Z1, the first stopper members 140 are disposed at two opposite ends of each forming groove 120, in other words, two first stopper members 140 are disposed on each forming groove 120, wherein two adjacent forming grooves 120 share one first stopper member 140, since the staple forming member 100 is manufactured by injection molding or 3D printing, for example, and the plurality of first stopper members 140, the plurality of forming grooves 120 and the forming body 110 are integrally formed. In the longitudinal direction Z1, the forming grooves 120 are connected to each other by a connecting portion, and when the first antislip piece 140 is disposed in the region of the connecting portion, two adjacent forming grooves 120 share one first antislip piece 140, that is, any two adjacent forming grooves 120 share three first antislip pieces 140.
In a preferred embodiment of the invention, as shown in fig. 2, the first slider 140 has a first side surface 141, the first side surface 141 extending in the direction of the transverse direction Z2 and perpendicular to the mating surface 111 or the shaped body 110. The forming groove 120 has a first groove wall 124, wherein one of the two opposite first side surfaces 141 and the first groove wall 124 of the forming groove 120 are connected with each other, corresponding to the first side surface 141 being disposed on an extension of the first groove wall 124. The molding groove 120 has a first molding recess 121 and a second molding recess 122 spaced apart from each other, and a spacer 123 is provided 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 from each other. The first groove wall 124 of the forming groove 120 is one of two groove walls of the forming groove 120 that are opposite to the spacing portion 123 and far away from the spacing portion 123. Since the first anti-slip member 140 is disposed on the extension of the first groove wall 124 of the forming groove 120, which corresponds to the increase of the height of the edge of the forming groove 120, the staples contact the first anti-slip member 140 after passing through the tissue, so that the staples are guided into the forming groove 120, and the forming effect is better. And the first side surface 141 of the first stopper 140 may guide the staples into the first forming pocket 121 and the second forming pocket 122 during the staple forming process. It should be noted that, for convenience of illustration in fig. 1 and 2, a surface of the first anti-slip member 140 away from the operating end of the surgical stapler is defined as a first side surface 141, and a wall of the two walls of the forming groove 120 close to the operating end of the surgical stapler is defined as a first groove wall 124, but not limited thereto. In other embodiments of the present invention, a surface of the first anti-slip member 140 close to the operating end of the surgical stapler may be defined as a first side surface, and a wall of the two walls of the groove defining the forming groove 120 far from the operating end of the surgical stapler may be defined as a first wall of the groove. That is, the positions of the first side surface 141 and the first groove wall 124 are not particularly limited in the present invention, and it suffices that the first side surface 141 and the first groove wall 124 are connected to each other.
It should be noted that, for convenience of description, the forming groove 120 is defined to have a groove wall 124, and in practical use, the groove wall 124 and the first side surface 141 of the first anti-slip member 140 are not particularly distinguished. In the present embodiment, the first side surface 141 is perpendicular to the mating surface 111, but not limited thereto.
The operative end of the surgical stapler of the invention is located at the right-hand end of the figures along the longitudinal direction Z1.
FIG. 3 is a schematic partial cross-sectional view of a staple forming member in accordance with another embodiment of the present invention; FIG. 4 is a schematic partial cross-sectional view of a staple forming assembly in accordance with yet another embodiment of the present invention. In another embodiment of the present invention, as shown in fig. 3, the first side surface 142 of the first anti-slip member 140' forms an angle with the mating surface, for example, the angle is acute, or the first side surface 142 is a slope. In another embodiment of the present invention, as shown in fig. 4, the first side surface 143 of the first anti-slip member 140 "is a curved arc surface smoothly connected with the first groove wall 124 of the forming groove 120, and preferably, the curved arc surface and the forming arc surface of the second forming recess 122 of the forming groove 120 form a smooth arc structure.
FIG. 5 is an enlarged partial schematic view of a staple forming member in accordance with yet another embodiment of the present invention. In order to increase the slip prevention capability of the first slip stopper 140, as shown in fig. 5, the top surface 150 (shown in fig. 1) of the first slip stopper 140' ″ is provided with a slip prevention ridge 160, and the slip prevention ridge 160 is, for example, a protrusion protruding from the top surface 150 (shown in fig. 1) in a direction away from the mating surface 111, or a groove recessed from the top surface 150 (shown in fig. 1) in a direction toward the mating surface 111. The protrusion and the groove may be plural.
FIGS. 6A-6C are enlarged partial views of a staple forming member in accordance with yet another embodiment of the present invention.
As shown in fig. 6A-6C, the staple forming piece may further comprise a second slip stopper, for example extending along the longitudinal direction Z1 of the staple forming piece 100, wherein the second slip stopper for example comprises a continuous slip stopper 172 and/or comprises a plurality of discontinuous slip stoppers 170, 171. In other words, the second anti-slip member is disposed between the plurality of bar structures arranged in the plurality of first anti-slip members 140. The second endstop member extends in the longitudinal direction Z1 and can be connected to one, two or more first endstop members 140 or not connected to the first endstop members 140. In this embodiment, the second anti-slip member is disposed adjacent to a 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 two edges of the second groove wall are respectively connected to two opposite first groove walls 124. The height of the second stopper piece is similar to the height of the first stopper piece 140, for example, 0.5 mm to 0.8 mm.
As shown in fig. 6A, the second anti-slip member includes a plurality of discontinuous anti-slip structures 170, and two opposite ends of each anti-slip structure 170 are respectively connected to the first anti-slip members 140, wherein the extending directions of the first anti-slip members 140 connected to the two ends of the anti-slip structures 170 are opposite, so that a "Z-shaped" anti-slip portion is formed between the anti-slip structure 170 and the first anti-slip members 140; alternatively, as shown in fig. 6B, the second anti-slip member includes a plurality of discontinuous anti-slip structures 171, two opposite ends of each anti-slip structure 171 are respectively connected to the first anti-slip member 140, wherein the extending directions of the first anti-slip members 140 connected to the two ends of the anti-slip structures 170 are the same, so that a "U-shaped" anti-slip portion is formed between the anti-slip structure 171 and the first anti-slip member 140; as shown in fig. 6C, the second anti-slip member includes, for example, a continuous anti-slip structure 172, and a plurality of first anti-slip members 140 are respectively distributed on two sides of the anti-slip structure 172 and staggered with the anti-slip structure 172 as a center, 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 6C only illustrate the second anti-slip member in a partial region of the mating surface 111, but the present invention is not limited to the region for disposing the second anti-slip member, and the second anti-slip member may be disposed in other regions of the mating surface 111 according to actual requirements. In the above embodiments, the staple forming member is for a surgical stapler, the staple forming member having a forming body with a mating surface and a plurality of forming grooves each recessed from the mating surface of the forming body toward an interior of the forming body, the staple forming member further comprising a plurality of first stopper pieces disposed on the mating surface, the plurality of first stopper pieces protruding from the mating surface, respectively.
FIG. 7 is an enlarged partial schematic view of a staple forming member in accordance with yet another embodiment of the present invention. As shown in fig. 7, the second anti-slip member includes a plurality of discontinuous anti-slip structures 180, for example, two opposite ends of each anti-slip structure 180 are respectively connected to the first anti-slip members 140, and two parallel anti-slip structures 180 arranged oppositely are respectively connected to the three first anti-slip members 140, so that they form another "U-shaped" anti-slip part; the opening of the other "U-shaped" skid is parallel to the transverse direction Z2 of the staple forming member 100.
Fig. 8A to 8C are schematic views of forming grooves of staple forming pieces according to still another embodiment of the present invention, and for the sake of convenience, fig. 8A to 8C only show forming grooves 120 in which a first stopper 140 and a second stopper of different structures are simultaneously disposed.
As shown in fig. 8A, a pair of first anti-slip pieces 140 and a pair of second anti-slip pieces are disposed around the forming groove 120, the pair of second anti-slip pieces are respectively connected to the head and tail ends of each first anti-slip piece 140, and the pair of first anti-slip pieces 140 are respectively connected to the head and tail ends of each second anti-slip piece, wherein each second anti-slip piece has a 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 form a rectangular anti-slip member, and the rectangular anti-slip member is disposed around the forming groove 120.
as shown in fig. 8B, the forming groove 120 has two opposite ends, the two opposite ends of the forming groove 120 are respectively provided with a first U-shaped slip stopper and a second U-shaped slip stopper, an opening of the first U-shaped slip stopper is opposite to an opening of the second U-shaped slip stopper, the first U-shaped slip stopper and the second U-shaped slip stopper respectively include a first slip stopper 140 and a pair of second slip stoppers, the pair of second slip stoppers are parallel and opposite, the pair of second slip stoppers are respectively provided at two ends of the first slip stopper 140, and each second slip stopper includes a slip stopper 191; wherein, a hollow part 200 is arranged between the first U-shaped anti-slip piece and the second U-shaped anti-slip piece, or the hollow part 200 is arranged between the anti-slip structure 191 of the first U-shaped anti-slip piece and the anti-slip structure 191 of the second U-shaped anti-slip piece; that is, in the present embodiment, the second anti-slip member has a plurality of discontinuous anti-slip structures.
As shown in fig. 8C, a first anti-slip member 140 and a second anti-slip member are disposed around the forming groove 120, for example, the first anti-slip member 140 is disposed at two opposite ends of the forming groove 120, 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 disposed between the discontinuous anti-slip structure 192 and the mating surface 111 (as shown in fig. 1), or the discontinuous anti-slip structure 192 is stacked above the continuous anti-slip structure 193, the second anti-slip member includes the design of the discontinuous anti-slip structure 192 and the continuous anti-slip structure 193, such that a side surface of the second anti-slip member away from the mating surface 111 has a concave-convex surface, which is beneficial for increasing friction with tissue, reducing slippage of the staple forming member.
In another embodiment of the present invention, a staple forming member is used in a surgical stapler, the staple forming member having a forming body. The molding body has an upper surface from which the protrusion protrudes upward, and the protrusion forms part or all of a groove wall of the molding groove in the up-down direction, that is, the molding groove is recessed downward from a top surface of the protrusion, and a bottom of the molding groove may be higher than, flush with, or lower than the upper surface of the molding body. Thus, the protruding portion is a backstop to prevent tissue from slipping. 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 slot in the middle of the staple forming member. Because the top surface of the protruding portion forms an anastomosis surface for tissue apposition, the protruding portion does not interfere with the cartridge assembly. Wherein "up" and "down" directions refer to directions perpendicular to both the longitudinal direction Z1 and the transverse direction Z2 of the staple forming member.
The invention also provides a surgical stapler (not shown) to which the above-described staple forming member is adapted.
In summary, the present invention improves the friction between the anastomosis surface of the staple molding member and the tissue to be anastomosed by providing the sliding stopper protruding from the anastomosis surface on the anastomosis surface of the staple molding member, thereby solving the problem of slippage during the tissue suturing operation. In addition, the anti-slip piece comprises a first anti-slip piece extending transversely and/or a second anti-slip piece extending longitudinally, the first anti-slip piece and the second anti-slip piece are respectively arranged close to the groove wall of the forming groove, and the first anti-slip piece extending transversely has the effect of guiding the staples to enter the forming groove and is beneficial to forming the staples in the sewing operation.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
in the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (13)
1. a staple forming member for a surgical stapler, the staple forming member comprising a forming body having a plurality of forming grooves, each forming groove being recessed from an anastomosis surface of the forming body towards an interior of the forming body, the staple forming member further comprising:
A plurality of first stopper pieces disposed on the mating surface, the plurality of first stopper pieces protruding from the mating surface, respectively.
2. the staple forming part of claim 1, wherein the first stop piece has a height of 0.5 mm to 0.8 mm.
3. The staple forming system of claim 1, wherein the first plurality of slip stops each extend in a transverse direction of the staple forming system.
4. The staple forming system of claim 3, wherein the first plurality of slip stops are disposed adjacent to the forming grooves, respectively.
5. The staple forming system of claim 3, wherein the first anti-slip member is arranged along a longitudinal direction of the staple forming system, and the first anti-slip member is disposed on at least one end of each forming groove.
6. The staple forming assembly of claim 5, wherein the first anti-slip member has a first side surface, the forming 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 assembly of claim 6, wherein the first side surface and the mating surface define an angle therebetween that is greater than 0 degrees and less than or equal to 90 degrees.
8. The staple forming part of claim 3, further comprising a second slip stopper disposed on the mating surface and extending longitudinally of the staple forming part.
9. The staple forming part of claim 8, wherein the second anti-slip member is a continuous anti-slip structure or a discontinuous anti-slip structure.
10. The staple forming part of claim 8, wherein the second anti-slip member is connected to the first anti-slip member or the second anti-slip member is disconnected from the first anti-slip member.
11. The staple forming system of claim 1, wherein the first plurality of anti-slip members each have anti-slip threads on a top surface thereof.
12. A staple forming member for use in a surgical stapler, the staple forming member comprising a forming body including an upper surface and a forming recess, wherein the staple forming member further comprises a protrusion protruding upwardly from the upper surface, the forming recess being recessed downwardly from a top surface of the protrusion, a bottom of the forming recess being above, flush with, or below the upper surface of the forming body; the protruding portion is a backstop to prevent tissue from slipping.
13. A surgical stapler comprising a staple forming member, characterized in that the staple forming member is a staple forming member according to any one of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810593346.5A CN110575212A (en) | 2018-06-08 | 2018-06-08 | Staple forming piece and surgical stapler using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810593346.5A CN110575212A (en) | 2018-06-08 | 2018-06-08 | Staple forming piece and surgical stapler using same |
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| Publication Number | Publication Date |
|---|---|
| CN110575212A true CN110575212A (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810593346.5A Pending CN110575212A (en) | 2018-06-08 | 2018-06-08 | Staple forming piece and surgical stapler using same |
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| Country | Link |
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| CN (1) | CN110575212A (en) |
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