CN210811271U

CN210811271U - Anastomat with stable jaw locking function

Info

Publication number: CN210811271U
Application number: CN201921509336.5U
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: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-06-23
Anticipated expiration: 2029-09-11

Abstract

The utility model relates to an anastomat with stable locking function of keeping silent, including nail storehouse subassembly, nail anvil, adapter and push-type broach subassembly. The nail bin assembly comprises a nail bin frame and a nail bin. The push broach assembly comprises an I-shaped broach and a push broach rod. A feed groove is arranged along the length direction of the nail bin and the nail bin frame. In addition, a pressing block is also arranged and comprises two pressing arms and two supporting arms. The pressing block is sleeved on the push broach assembly, and a push broach assembly passing hole is formed in the pressing block. And the pressing arm or the supporting arm is provided with an inserting part opposite to the penetrating hole of the corresponding push-type broach assembly, and correspondingly, the push-type broach assembly is provided with a first inserting sinking groove. An elastic outer arch part is arranged at the middle part of the supporting arm. So, when the anastomat is in the excited state, elasticity external supply portion receives the extrusion effect in trough and makes the height dimension increase of briquetting, leads to grafting portion and the heavy groove of first grafting to break away from mutually to the tension of keeping silent is undertaken by the briquetting, and then has reduced the atress of I-shaped sword along its self direction of height.

Description

Anastomat with stable jaw locking function

Technical Field

The utility model belongs to the technical field of the anastomat manufacturing technology and specifically relates to an anastomat with stabilize closure function of keeping silent.

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. However, it has a tendency to open due to the presence of tissue material within the jaws. In the prior art, the closing state of the jaw is always ensured only by the pushing force exerted on the nail bin and the nail anvil by the h-knife (as shown in fig. 1 and 2), so that the h-knife always receives the dual actions of the cutting force in the horizontal direction and the pushing force in the vertical direction in the process of directional cutting, and the phenomenon of fracture among the upper knife seat, the lower knife seat and the knife blade is easily caused, thereby increasing the risk of operation, and therefore, the technical personnel are urgently needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a structural design is simple, reduces the I-shaped sword and draws the fracture risk, ensures the anastomat that has the locking function of keeping silent of operation security.

In order to solve the technical problem, the utility model relates to an anastomat with stable locking function of keeping silent, including nail storehouse subassembly, nail anvil, adapter and push-type broach subassembly. Wherein, the adapter, the nail bin assembly and the nail anvil are hinged into a whole by means of a pin shaft. The push broach assembly comprises a push broach rod and an I-shaped broach. The nail bin assembly comprises a nail bin frame and a nail bin. The nail bin and the nail bin frame are fixed into a whole, and a cutter feeding groove is formed in the length direction of the nail bin and used for the I-shaped cutter to directionally slide. The push broach assembly passes through the adapter, and a push broach rod of the push broach assembly is fixed with the I-shaped broach. In addition, the anastomat with the stable jaw locking function further comprises a pressing block. The pressing block is sleeved on the push broach assembly and is provided with a push broach assembly passing hole. The pressing block comprises two pressing arms and two supporting arms, and the pressing arms and the supporting arms are respectively oppositely arranged around the penetrating hole of the push broach assembly. And the supporting arm or the pressing arm is provided with an inserting part opposite to the corresponding penetrating hole of the push cutter assembly, and correspondingly, the push cutter rod is provided with a first inserting sinking groove matched with the inserting part. And an elastic outer arch part is arranged in the middle of the supporting arm.

As the utility model discloses a technical scheme's further improvement, the feed groove includes closed section and feed working section, and arranges according to the preface along the feed cutting direction of I-shaped sword. The width of the closed section is larger than that of the feed working section. When the pressing block enters the feed working section from the closing section, the elastic outer arch part is gradually stressed by lateral extrusion force and is folded inwards.

As a further improvement of the technical proposal disclosed by the utility model, aiming at the single side wall of the supporting arm, the elastic outer arch part is arranged into one section or a plurality of sections.

As the utility model discloses a technical scheme's further improvement, the width of briquetting is greater than the width of I-shaped sword. Blocking step surfaces are symmetrically arranged on the nail bin frame along the two side walls of the cutter trough outwards. The opening of the two blocking step surfaces is larger than the width of the I-shaped knife and smaller than the width of the pressing block so as to form blocking for the supporting arm.

As the utility model discloses a technical scheme's improvement still further, grafting portion is protruding for setting up on the broach subassembly passes through the hole upper and lower lateral wall, the grafting of mutual symmetry, and correspondingly, the heavy groove of first grafting arranges on the roof of broach pole, diapire.

Of course, as a modification of the above technical solution, the inserting portion may also be inserting protrusions which are symmetrically arranged on the front and rear side walls of the push broach assembly passing hole, and correspondingly, the first inserting sinking groove is arranged on the front wall and the rear wall of the push broach rod.

As a further improvement of the technical proposal disclosed by the utility model, the cross section of the splicing bulge is rectangular, trapezoidal or arc.

Compare in the anastomat of traditional project organization, in the technical scheme that utility model discloses, additionally add the briquetting. Therefore, in the actual operation process, the push broach rod drags the I-shaped knife and the pressing block to integrally and synchronously move until the nail bin assembly is in a closed state (namely the jaw is closed) relative to the nail anvil, in the process, the elastic outer arch part is gradually squeezed by the knife feeding groove to be folded inwards, and the pressing block is retarded in displacement, meanwhile, the distance between the pressing arms is correspondingly increased, the push broach rod drags the I-shaped knife to move forwards continuously, so that the pressing block is separated from the push broach rod or the I-shaped knife, and at the moment, the pressing block compresses and abuts against the nail bin and the nail anvil respectively by virtue of the two pressing arms of the pressing block, so that the reliable locking of the jaw is realized.

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 these drawings without creative efforts.

Fig. 1 is a perspective view of a prior art stapler.

Fig. 2 is a perspective view of an i-knife in the stapler.

Fig. 3 is a perspective view of the stapler with stable jaw locking function in the non-activated state (jaw open) of the present invention.

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

Fig. 5 is a perspective view of the stapler with stable jaw locking function in the present invention in an activated state (closed jaws).

Fig. 6 is a partial enlarged view II of fig. 5.

Fig. 7 is a cross-sectional view of fig. 5.

Fig. 8 is an assembly diagram of the first embodiment of the push rod, the i-shaped knife and the pressing block in the stapler with the stable jaw locking function according to the present invention.

Fig. 9 is a schematic perspective view of a press block in the stapler with a stable jaw locking function according to the present invention.

Fig. 10 is a front view of a press block in the stapler with a stable jaw locking function according to the present invention.

Fig. 11 is an assembly diagram of a second embodiment of the push rod, the i-shaped knife and the pressing block in the stapler with the function of stabilizing the jaw locking of the present invention.

1-a nail bin assembly; 11-nail bin rack; 111-block step surface; 12-a staple cartridge; 13-a gate; 131-a closed section; 132-a feed working section; 2-nail anvil; 3-an adapter; 4-a push-broach assembly; 41-pushing a cutter rod; 411-a first plugging sink; 42-an i-knife; 421-a second inserting sinking groove; 5-briquetting; 51-the push-broach assembly passes through the hole; 52-a pressing arm; 521-a plug-in part; 5211-insert projection; 53-a support arm; 531-elastic outer arch; 6-pin shaft.

Detailed Description

In the description of the present invention, it is to be understood that the terms "front", "back", "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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.

In the following, the contents of the present invention will be further described in detail with reference to the specific embodiments, and fig. 3 and 4 respectively show a schematic perspective view of an unexcited state (jaw open) of the stapler with a stable jaw locking function and a partial enlarged view of a portion I thereof; fig. 5, fig. 6, fig. 7 respectively show a schematic perspective view, a partial enlarged view of II and a cross-sectional view of the stapler with a stable jaw locking function in the present invention, which mainly comprises a nail cartridge assembly 1, a nail anvil 2, an adapter 3, a push-type broach assembly 4, a pin shaft 6, and the like. Wherein, the adapter 3, the nail bin component 1 and the nail anvil 2 are hinged into a whole by a pin shaft 6. The push broach assembly 4 includes a push bar 41 and an i-knife 42. The cartridge assembly 1 includes a cartridge frame 11, a cartridge 12, and the like. The nail bin 12 and the nail bin frame 11 are fixed together, and a cutter feeding groove 13 is arranged along the length direction of the nail bin frame for the I-shaped cutter 42 to directionally slide to complete the tissue cutting action. The push-type broach assembly 4 passes through the adapter 3, and the push-type broach rod 41 is fixed with the I-shaped broach 42. It should be emphasized that the anastomat further comprises a pressing block 5, which is sleeved on the pushing rod 41 or the i-shaped knife 42. In the embodiment, the pressing block 5 is sleeved on the pushing rod 41, and a pushing assembly passing hole 51 is formed thereon. The pressing block 5 includes two pressing arms 52 and two supporting arms 53, and is disposed oppositely around the push-broach assembly-passing hole 51, respectively (as shown in fig. 9). An insertion part 521 is provided on the pressing arm 52 opposite to the push-broach assembly passing hole 51, and correspondingly, a first insertion sinking groove 411 matched with the insertion part 521 is provided on the push-broach rod 41. An elastic outer arch 531 (shown in fig. 10) is provided at a middle position of the support arm 53. Thus, when the stapler is in an activated state, the elastic outer arch portion 531 is pressed by the knife-feeding groove 13 to increase the height of the pressing block 5, so that the inserting portion 521 is separated from the first inserting sinking groove 411, and the jaw tension generated by pressing the tissue is mainly borne by the pressing block 5, thereby reducing the stress of the i-shaped knife 42 along the height direction thereof and only bearing the effect of the tissue cutting force as much as possible.

Of course, the inserting portion 521 can also be disposed on the supporting arm 53 according to the actual situation, and accordingly, the position of the first inserting sinking groove 411 on the pushing bar is changed accordingly.

As a further optimization of the stapler having the stable jaw locking function, the feed groove 13 includes a closing section 131 and a feed working section 132, and is sequentially arranged along the feed cutting direction of the i-shaped knife 42. The width of the closed section 131 is greater than that of the working section 132, and the two smoothly and smoothly transition. Thus, in the process that the pressing block 5 is dragged by the push-type broach rod 41 to enter the feed working section 132 from the closing section 131, the elastic outer arch portion 531 gradually receives the lateral extrusion force to generate inward folding deformation, so that the matching precision requirement of the pressing block 5 and the feed groove 13 is reduced, and the manufacturing cost is reduced.

Here, it should be noted that, for a single side wall (front side wall or rear side wall) of the support arm 53, the elastic outer arch 531 is provided in one or more stages thereon, and is set according to actual conditions.

In order to further ensure the reliability of the disengagement of the inserting part 521 from the first inserting sinking groove 411, the width of the pressing block 5 should be greater than the width of the i-shaped knife 42, and the blocking step surfaces 111 are symmetrically arranged on the magazine rack 11 along the two side walls of the knife slot 13. The opening of the two blocking step surfaces 111 needs to be larger than the width of the i-shaped knife 42 and smaller than the width of the pressing block 5 (as shown in fig. 4 and 7). Thus, in the actual operation process, when the stapler is in the excited state, the i-shaped knife 42 and the pressing block 5 move synchronously. Before the I-shaped knife 42 formally performs cutting work, the pressing block 5 stops moving forward under the blocking action of the blocking step surface 111, is fixed at a certain position and keeps unchanged to keep the opening angle of the jaw, and meanwhile, the I-shaped knife 42 passes through the blocking step surface 111 to complete subsequent tissue cutting action.

Fig. 8 shows an assembly diagram of the first embodiment of the pusher bar, the i-shaped knife and the pressing block in the stapler with stable jaw locking function according to the present invention, it can be known that the inserting portion 521 is preferably an inserting protrusion 5211, which is disposed on the upper and lower side walls of the pusher assembly passing hole 51 and is symmetrically disposed up and down, and accordingly, the first inserting sinking groove 411 is disposed on the top wall and the bottom wall of the pusher bar 41 (as shown in fig. 8 and 10). As a further optimization, the cross-sectional shape of the insertion protrusion 5211 may preferably be any one of a rectangle, a trapezoid or an arc, and is selected according to an actual application scenario and a manufacturing process condition in an actual design process.

Of course, as a modification of the above technical solution, the following points are distinguished: the plug-in protrusions 5211 can also be transformed to the supporting arms 53, i.e. disposed on the front and rear sidewalls of the push-type broach assembly through hole 51, and symmetrically disposed with each other, and correspondingly, the first plug-in sunken slots 411 are disposed on the front and rear walls (not shown) of the push-type broach rod 41.

In the two technical solutions, when the pressing block 5 is separated from the push-type broach rod 41, the pressing block 5 is subjected to a lateral abutting force to increase its height dimension, so that the inserting part 521 is removed from the first inserting sinking groove 411. In addition, in some special cases, the inserting portion 521 can be disengaged from the first inserting sinking groove 411 only by the pressing force of the first inserting sinking groove 411, so that the inserting portion 521 and the first inserting sinking groove 411 lose the locking function.

The operation principle of the anastomat is as follows: in the earlier stage of operation, the push-type knife rod 41 drags the I-shaped knife 42 and the pressing block 5 to integrally and synchronously move until the nail box component 1 is in a closed state (namely the jaw is closed) relative to the nail anvil 2, in this process, the elastic outer arch portions 531 provided on the left and right sides of the pressing block 5 are gradually pressed by the chute 13 to be inwardly gathered, the interval between the pressing arms 52 provided on the upper and lower sides of the pressing block 5 is correspondingly increased, the push broach rod 41 drags the I-shaped knife 42 to move forward continuously, so that the pressing block 5 is separated from the push broach rod 41, meanwhile, the pressing block 5 is retarded by the action of friction force, at the moment, the pressing block 5 respectively presses and leans against the nail bin 12 and the nail anvil 2 by means of the two pressing and leaning arms 52, thereby realizing the reliable and stable locking of the jaw, the stress in the height direction of the pressing block 5 is shared to a great extent, the phenomenon of fracture of the pressing block is prevented, and the safety of the operation is ensured.

Fig. 11 is an assembly diagram of the second embodiment of the present invention, which is an assembly diagram of the pusher bar, the i-shaped knife and the pressing block in the stapler with stable jaw locking function, and the difference between the two embodiments is as follows: the pressing block 5 is sleeved on the periphery of the i-shaped knife 42 and is fixedly connected with the i-shaped knife, and correspondingly, a second inserting sinking groove 421 matched with the inserting protrusion 5211 is formed in the i-shaped knife.

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 stapler with stable jaw locking function comprises a nail bin assembly, a nail anvil, an adapter and a push-type broach assembly; the adapter, the nail bin assembly and the nail anvil are hinged into a whole by means of a pin shaft; the push broach assembly comprises a push broach rod and an I-shaped broach; the nail bin assembly comprises a nail bin frame and a nail bin; the nail bin and the nail bin frame are fixed into a whole, and a cutter feeding groove is formed in the length direction of the nail bin and used for the I-shaped cutter to directionally slide; the push broach assembly penetrates through the adapter, the push broach rod is fixed with the I-shaped broach, and the push broach is characterized by further comprising a pressing block; the pressing block is sleeved on the push broach assembly, and a push broach assembly passing hole is formed in the pressing block; the pressing block comprises two pressing arms and two supporting arms, and the pressing arms and the supporting arms are respectively oppositely arranged around the push broach assembly through hole; a plug-in part is arranged on the pressure arm or the supporting arm and opposite to the penetration hole of the push broach assembly, and correspondingly, a first plug-in sunken groove matched with the plug-in part is arranged on the push broach rod; and an elastic outer arch part is arranged in the middle of the supporting arm.

2. The stapler with stable jaw locking function according to claim 1, wherein the feed slot comprises a closing section and a feed working section, sequentially arranged along a feed cutting direction of the i-shaped knife; the width of the closed section is larger than that of the feed working section; and in the process that the pressing block enters the feed working section from the closing section, the elastic outer arch part is gradually stressed by lateral extrusion force and is folded inwards.

3. The stapler with stable jaw locking according to claim 1, wherein the elastic arches are provided thereon in one or more segments for a single side wall of the support arm.

4. The stapler with stable jaw locking function according to any one of claims 1-3, wherein the width of the pressing block is greater than the width of the I-knife; blocking step surfaces are symmetrically arranged on the nail bin frame along two side walls of the chute outwards; the opening of the two blocking step surfaces is larger than the width of the I-shaped knife and smaller than the width of the pressing block so as to block the supporting arm.

5. The stapler with a stable jaw locking function according to claim 4, wherein the insertion portions are insertion protrusions symmetrically disposed on upper and lower sidewalls of the penetration hole of the pusher assembly, and the first insertion recesses are disposed on top and bottom walls of the pusher bar, respectively.

6. The stapler with a stable jaw locking function according to claim 4, wherein the insertion portions are insertion protrusions symmetrically disposed on front and rear side walls of the push broach assembly passing hole, and the first insertion grooves are disposed on front and rear walls of the push broach rod, respectively.

7. The stapler with stable jaw locking function according to any one of claims 5-6, wherein the cross-sectional shape of the insertion protrusion is rectangular, trapezoidal or arc.