CN111345860A

CN111345860A - Nail anvil with tissue anti-skid structure and anastomat comprising same

Info

Publication number: CN111345860A
Application number: CN202010274134.8A
Authority: CN
Inventors: 舒拓
Original assignee: Kangqi Shuning Suzhou Medical Technology Co ltd
Current assignee: Kangqi Shuning Suzhou Medical Technology Co ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2020-06-30

Abstract

The invention relates to a nail anvil with a tissue antiskid structure, wherein a cutting trough and a plurality of nail forming grooves are arranged on an anastomotic surface of the nail anvil. The chute extends along the length of the anvil. In addition, a tissue anti-slip part is also arranged on the anastomotic surface. The tissue anti-slip part is composed of an anti-slip groove group formed on the inosculating surface. The number of the anti-skid groove groups is set to be 2, and the anti-skid groove groups are respectively distributed on the left side and the rear side of the feed groove. Therefore, on one hand, the phenomenon that the tissue inevitably slides along the jaw due to the action of the extrusion force when the tissue is cut and sutured is effectively avoided, and the smoothness of the incision is ensured; on the other hand, the use of an additional auxiliary clamping tool is avoided, so that the difficulty of operation is reduced, and the labor intensity of operators is reduced; on the other hand, the sewing nail has more correct directionality in the process of entering tissues, the forming quality of the sewing opening is ensured, and the risk of blood seepage is reduced.

Description

Nail anvil with tissue anti-skid structure and anastomat comprising same

Technical Field

The invention relates to the technical field of medical instrument manufacturing, in particular to a nail anvil with a tissue anti-skidding structure and a stapler comprising the nail anvil.

Background

In laparoscopic surgery and thoracoscopic surgery, the laparoscopic cutting stapler is generally used for cutting and anastomosis operations of esophagus, stomach, duodenum, small intestine, colon, rectum, appendix, gallbladder, pancreas, spleen and the like in the digestive tract, for cutting and anastomosis operations of lung, trachea and the like in the respiratory tract, and for cutting and anastomosis operations of bladder, uterus and the like in the urogenital system, and through the application, the surgical wound can be greatly reduced, the operation time can be shortened, and the operation quality can be improved.

Generally, the nail bin and the nail bin frame are fixed into a whole, and a cutter path is arranged along the length direction of the nail bin and the nail bin frame. When the jaws are in a closed state, the I-shaped knife slides along the knife feeding groove in a directional way under the thrust action of the push knife rod so as to realize the function of cutting tissues. Meanwhile, tissue is placed between the nail bin and the nail anvil, at the moment, the trigger handle is pulled, the nail pushing sheet gradually extends out towards the tissue under the action of the oblique force, namely, two rows of staggered nails are placed into the tissue and are bent into a B shape under the action of the nail forming groove on the nail anvil, and then the tissue is sutured. In the prior art, an effective anti-slip design is lacked between anastomotic surfaces of a nail bin and a nail anvil, so that the anastomotic surfaces of the nail bin and the nail anvil can inevitably slide along a jaw due to the action of extrusion force when the nail bin and the nail anvil cut and sew tissues, and the smoothness of a cut is further influenced; in addition, the staples are easy to incline when being discharged, and the staples can not effectively suture the tissues when the staples are serious. Thus, a skilled person is urgently needed to solve the above problems.

Disclosure of Invention

The invention aims to solve the technical problem of providing a nail anvil with a tissue anti-slip structure, which has simple structural design, is beneficial to manufacturing and molding, and ensures that the tissue always keeps the consistency of the relative position of the tissue in the cutting process.

In order to solve the technical problem, the invention relates to a nail anvil with a tissue anti-slip structure, wherein a cutting trough and a plurality of nail forming grooves are formed on an anastomosis surface of the nail anvil. The chute extends along the length of the anvil. In addition, a tissue anti-slip part is also arranged on the anastomotic surface. The tissue anti-slip part is composed of an anti-slip groove group formed on the inosculating surface. The number of the anti-skidding groove groups is set to be 2, and the anti-skidding groove groups are respectively distributed on the left side and the right side of the chute.

As a further improvement of the technical scheme of the invention, the single anti-skid groove group on the left side is surrounded by the first barrier strip, the second barrier strip and the third barrier strip. Wherein, first blend stop, second blend stop all move towards, extend along the fore-and-aft direction, and the second blend stop arranges in the left side of first blend stop, and the third blend stop moves towards, extends along left right direction to enclose to keep off and form a plurality of mutually independent anti-skidding recesses that are used for constituteing above-mentioned anti-skidding recess group.

As a further improvement of the technical scheme of the invention, along the length direction, the left side wall of the second barrier strip is formed by sequentially connecting a plurality of continuous and smooth-transition convex surfaces and concave surfaces.

As a further improvement of the technical scheme of the invention, the first blocking strip and the second blocking strip are formed by continuously extending the inosculating surface upwards and are 0.05-0.5mm higher than the inosculating surface.

As a further improvement of the technical solution of the present invention, for a single anti-slip groove, the anti-slip groove is surrounded by a first guiding inclined surface, a second guiding inclined surface and a third guiding inclined surface. The first guide inclined plane is formed by beveling a third baffle strip along the front and back directions; the second guide inclined plane and the third guide inclined plane are oppositely arranged and are respectively formed by beveling a first blocking strip and a second blocking strip along the left-right direction.

As a further improvement of the technical scheme of the present invention, the first guiding inclined plane is formed by sequentially extending a plurality of arc-shaped curves, and the second guiding inclined plane and the third guiding inclined plane are formed by sequentially extending a plurality of straight lines.

As a further improvement of the technical scheme of the invention, a first tissue accommodating notch and a second tissue accommodating notch respectively extend downwards from the top walls of the first barrier strip and the second barrier strip.

As a further improvement of the technical proposal of the invention, the first tissue accommodating gap and the second tissue accommodating gap are arranged in a staggered way.

Of course, as a modification of the above solution, the first tissue receiving gap may also be located opposite the second tissue receiving gap.

By adopting the technical scheme, on one hand, the phenomenon that the tissue inevitably slides along the jaw due to the action of extrusion force when the tissue is cut and sutured is effectively avoided, so that the flatness of the incision is ensured; on the other hand, the use of an additional auxiliary clamping tool is avoided, so that the difficulty of operation is reduced, and the labor intensity of operators is reduced; on the other hand, the sewing nail has more correct directionality in the process of entering tissues, the forming quality of the sewing opening is ensured, and the risk of blood seepage is reduced.

In addition, another technical problem to be solved by the invention is to provide a anastomat.

In order to solve the technical problem, the invention relates to a nail anvil and a connector which comprise a nail bin, a nail bin frame, the nail anvil and the connector, wherein the nail bin and the nail bin frame are fastened and fixed and are arranged opposite to the nail anvil. The adapter, the nail bin frame and the nail anvil are hinged into a whole.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of the stapler of the present invention.

FIG. 2 is a schematic diagram of the stapler of the present invention in operation to perform a cutting and stapling operation.

FIG. 3 is a perspective view of an anvil having a tissue anti-slip arrangement according to the present invention.

Fig. 4 is an enlarged view of part I of fig. 3.

Fig. 5 is a top view of fig. 3.

Fig. 6 is a sectional view a-a of fig. 5.

Fig. 7 is a partial enlarged view II of fig. 6.

Fig. 8 is a sectional view B-B of fig. 5.

FIG. 9 is a perspective view of an alternative perspective of an anvil having a tissue anti-slip arrangement in accordance with the present invention.

Fig. 10 is a partially enlarged view III of fig. 9.

1-nail bin; 2-nail bin rack; 3-nail anvil; 31-anastomotic surface; 311-a gate; 312-nail forming grooves; 313-tissue slide prevention; 3131-a set of non-slip grooves; 31311 — a first bar; 313111-first tissue receiving gap; 31312-a second bar; 313121-a second tissue receiving gap; 31313 — a third bar; 31314-non-slip groove; 313141-first guide ramp; 3131411-arc curve; 313142-second guide ramp; 3131421-straight line; 313143-third guide ramp; 4-adapter.

Detailed Description

In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The present invention will be further described in detail with reference to the following embodiments, and fig. 1 shows a perspective view of the stapler of the present invention, which is mainly composed of a staple cartridge 1, a staple cartridge frame 2, a nail anvil 3, and an adapter 4, wherein the staple cartridge 1 and the staple cartridge frame 2 are fastened and fixed, and the whole stapler and the nail anvil 3 are disposed opposite to each other along the vertical direction. The adapter 4, the nail bin frame 2 and the nail anvil 3 are hinged into a whole. The stapler works substantially as follows when performing tissue stapling: as shown in figure 2, the tissue needs to be clamped between the anastomotic surfaces of the nail bin 1 and the nail anvil 3, at this time, the nail pushing sheet is pre-installed in the nail bin 1, the trigger handle is pulled, the nail pushing sheet gradually extends downwards under the action of the oblique force, namely, two rows of staggered nails are placed in the tissue and bent into a B shape, and then the tissue is sutured. When the jaws are in a closed state, the I-shaped knife slides along the knife feeding groove in a directional manner under the thrust action of the knife pushing rod so as to realize the function of cutting tissues.

In order to avoid the occurrence of the sliding phenomenon in the process of cutting and suturing tissues, the technical scheme disclosed by the invention applies the nail anvil with a tissue anti-sliding structure, and the specific structure of the nail anvil is explained in detail as follows: as shown in fig. 3, a knife slot 311 and a plurality of staple forming grooves 312 are opened on the engagement surface 31 of the anvil 3. A knife track 311 extends along the length of the anvil (i.e., in the fore-aft direction as viewed in fig. 3). Further, the mating surface 31 is provided with a tissue slide preventing portion 313. The tissue anti-slip portion 313 is formed of an anti-slip groove group 3131 formed on the mating surface 31. The number of the anti-slip groove group 3131 is set to 2, and the anti-slip groove group is respectively distributed on the left and right sides of the runner 311. By adopting the technical scheme, in the process of cutting and suturing tissues, the anti-slip groove group 3131 can be pressed in real time to prevent the tissues from sliding along the jaw under the action of extrusion force, so that on one hand, the smoothness of the incision is ensured, and the use of an additional auxiliary clamping tool is avoided, thereby reducing the difficulty of operation and the labor intensity of operators; on the other hand, the suture nail has more correct directionality in the process of entering tissues, the forming quality of the suture opening is ensured, and the risk of blood seepage is reduced.

As a further refinement of the anvil design with tissue anti-slip structure, for a single set of anti-slip grooves 3131, it is preferable that it is surrounded by a first bar 31311, a second bar 31312 and a third bar 31313. The first barrier rib 31311 and the second barrier rib 31312 extend along the front-back direction, the second barrier rib 31312 is disposed at the left side of the first barrier rib 31311, and the third barrier rib 31313 extends along the left-right direction to enclose the plurality of independent anti-slip grooves 31314 (as shown in fig. 4) forming the anti-slip groove set 3131. Through adopting above-mentioned technical scheme to set up for each antiskid groove 31314 all can press from both sides the tight tissue independently, thereby makes the clamping force that each segmentation of tissue received basically unanimous, under the prerequisite of guaranteeing reliable clamp, reduces the pressure loss to the tissue as far as possible.

Furthermore, the first stop 31311 and the second stop 31312 are formed by the matching surface 31 extending upward, and are spaced apart from the top surface of the matching surface 31 by 0.05-0.5mm (as shown in fig. 4). Thus, during tissue clamping using the stapler, the first flap 31311 and the second flap 31312 are both recessed into the tissue to form a strip-shaped stopper, thereby further improving the reliability of tissue clamping.

Of course, in order to further improve the tissue accommodating force of the outer second stop 31312, the second stop 31312 may be optimized as follows: the left side wall of the second dam 31312 is formed by connecting a plurality of continuous, smoothly-transitioning convex and concave surfaces in sequence (as shown in fig. 4), so that it forms a "S-shaped" or "saw-tooth" continuous curve with a good offset.

Further, for a single anti-slip groove 31314, it is surrounded by the first guiding inclined surface 313141, the second guiding inclined surface 313142 and the third guiding inclined surface 313143. Wherein, the first guiding inclined plane 313141 is formed by the third stop 31313 being obliquely cut along the front-back direction; the second guiding inclined surface 313142 and the third guiding inclined surface 313143 are oppositely arranged and are respectively formed by the first stop 31311 and the second stop 31312 which are obliquely cut along the left-right direction (as shown in fig. 4, 9 and 10). Thus, at the moment when the tissue enters the nonslip groove group 3131, the tissue can be guided along the longitudinal direction and the width direction of the tissue, so that the tissue can enter the nonslip grooves 31314 more easily, and the tissue can be reliably clamped.

In addition, a great deal of experiments prove that the optimal tissue clamping effect can be obtained when the anti-slip groove 31314 is designed according to the following structural form, and the pressure loss to the tissue after the operation is minimal, which is as follows: the first guiding inclined plane 313141 is formed by a plurality of curved lines 3131411 sequentially extending (as shown in fig. 5, 6 and 7), and the second guiding inclined plane 313142 and the third guiding inclined plane 313143 are formed by a plurality of straight lines 3131421 sequentially extending (as shown in fig. 5, 6 and 8).

However, the skilled person will be reminded here that: in fig. 8, the second guide slope 313142 is schematically illustrated as an example, and the third guide slope 313143 may be implemented with reference to the second guide slope 313142 during the actual design process.

Of course, in order to further improve the tissue clamping reliability, as a further optimization of the above technical solution, a first tissue accommodating notch 313111 and a second tissue accommodating notch 313121 (as shown in fig. 4, 7 and 10) may be respectively extended downward from the top walls of the first flap 31311 and the second flap 31312. Thus, when the tissue is pressed by the first and

second bars

31311, 31312, a portion of the tissue can enter the first and second

tissue receiving notches

313111, 313121 under the action of the pressing force, and a certain "snap" action is formed on the tissue, thereby more effectively ensuring the consistency of the relative positions of the tissue.

Based on a number of experimental demonstrations, the relative positional relationship of first tissue-receiving notch 313111 and second tissue-receiving notch 313121 may affect the reliability of tissue clamping and the crush performance to some extent, and for this reason, two arrangements are given in this example, as follows: 1) first tissue-receiving notch 313111 is offset from second tissue-receiving notch 313121 by a distance of no less than 0.2mm (not shown); 2) first tissue-receiving notch 313111 is positioned opposite second tissue-receiving notch 313121 (as shown in fig. 4). As to what kind of design scheme is adopted for implementation, the skilled person in the art can select the design according to the reference indexes such as the type of the specific diseased organ, the tissue thickness and the blood seepage tolerance applied by the anastomat.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nail anvil with a tissue antiskid structure is provided with a feed groove and a plurality of nail forming grooves on an anastomotic surface; the chute extends along the length direction of the nail anvil; in addition, a tissue anti-slip part is arranged on the anastomotic surface, and is characterized in that the tissue anti-slip part is composed of an anti-slip groove group formed on the anastomotic surface; the number of the anti-skidding groove groups is set to be 2, and the anti-skidding groove groups are respectively distributed on the left side and the right side of the walk groove.

2. The anvil with tissue antiskid structure of claim 1, wherein said antiskid groove set on the left side is enclosed by a first barrier, a second barrier and a third barrier; the first blocking strip and the second blocking strip move towards and extend along the front-back direction, the second blocking strip is arranged on the left side of the first blocking strip, and the third blocking strip moves towards and extends along the left-right direction to form a plurality of mutually independent anti-skidding grooves which are used for forming the anti-skidding groove group.

3. The anvil with tissue antiskid structure of claim 2, wherein along the length direction of said second barrier, said left sidewall of said second barrier is formed by connecting a plurality of continuous and smoothly transitional convex and concave surfaces in sequence.

4. The anvil with the tissue anti-slip structure according to claim 2, wherein the first bar and the second bar are both formed by the engagement surface continuing to extend upward and are 0.05-0.5mm higher than the engagement surface.

5. The anvil with tissue antiskid structure of any one of claims 2-4, wherein for a single said anti-slip groove, it is surrounded by a first guide ramp, a second guide ramp, and a third guide ramp; the first guide inclined plane is formed by beveling the third baffle strip along the front-back direction; the second guide inclined plane and the third guide inclined plane are oppositely arranged and are formed by beveling the first blocking strip and the second blocking strip along the left-right direction respectively.

6. The anvil with a tissue antiskid structure of claim 5, wherein said first guiding inclined plane is formed by a plurality of arc-shaped curves sequentially extending, and said second guiding inclined plane and said third guiding inclined plane are formed by a plurality of straight lines sequentially extending.

7. The anvil with tissue antiskid structure of any one of claims 2-4, wherein a first tissue receiving notch and a second tissue receiving notch extend downwardly from the top wall of the first barrier and the second barrier, respectively.

8. The anvil having a tissue anti-slip arrangement of claim 7, wherein said first tissue receiving notch is offset from said second tissue receiving notch.

9. The anvil having a tissue anti-slip arrangement of claim 7, wherein said first tissue receiving notch is disposed opposite said second tissue receiving notch.

10. A stapler comprises a nail bin, a nail bin frame, a nail anvil and a connector, wherein the nail bin and the nail bin frame are fastened and fixed and are arranged opposite to the nail anvil; the adapter, the nail storehouse frame and the nail anvil are hinged into a whole, and the nail anvil is characterized in that the nail anvil of any one of claims 1-9.