CN204049726U - Knife assembly and there is the anastomat of described knife assembly - Google Patents

Abstract

This utility model discloses a kind of knife assembly and has the anastomat of described knife assembly, described knife assembly comprises cutter and push pedal, one of them of described cutter and described push pedal is provided with boss, another is provided with the draw-in groove coordinating described boss, and described cutter are fixedly connected with described draw-in groove by described boss with described push pedal.This utility model, by the cooperation of the draw-in groove between cutter and push pedal, boss, reaches the stable object coordinated between cutter with push pedal.

Description

Knife assembly and there is the anastomat of described knife assembly

Technical field

This utility model belongs to manufacture technology field of medical appliance, is specifically related to a kind of knife assembly of Medical stapler.

Background technology

Usually, the rear end of the cutter of anastomat is directly welded and fixed with the front end of push pedal, and in percussion process, easily the jackknifing of generation cutter and push pedal junction comes off, thus causes cutter to be separated with push pedal retracting in process.

Utility model content

For solving the problem, the utility model proposes a kind of knife assembly and there is the anastomat of described knife assembly, by the cooperation of the draw-in groove between cutter and push pedal, boss, reach the stable object coordinated between cutter with push pedal.

For realizing above-mentioned utility model object, this utility model provides a kind of knife assembly, and in Medical stapler, described knife assembly comprises cutter and push pedal; One of them of described cutter and described push pedal is provided with boss, and another is provided with the draw-in groove coordinating described boss, and described cutter are fixedly connected with described draw-in groove by described boss with described push pedal.

As further improvement of the utility model, described draw-in groove and described boss are connected by multiple phase of solder joint.

As further improvement of the utility model, described multiple solder joint is provided with spacing between any two.

As further improvement of the utility model, described boss and described draw-in groove comprise the end face and sidewall that cooperatively interact, wherein, between the sidewall of described boss and described draw-in groove, are provided with at least one solder joint.

As further improvement of the utility model, the Breadth Maximum of this boss is not less than the A/F of this draw-in groove.

As further improvement of the utility model, the section shape of described draw-in groove is arc, or the abnormity be made up of many line segments.

As further improvement of the utility model, described boss is arranged on described cutter, and described draw-in groove is arranged in described push pedal.

As further improvement of the utility model, described cutter are linear type cutter.

This utility model also provides a kind of chamber mirror anastomat, comprising: anastomat body; Nail bin groupware, described nail bin groupware is arranged at described anastomat body distal end, and described nail bin groupware comprises nail bin and nail anvil; And knife assembly as above.

Compared with prior art, interfixed by draw-in groove and boss between the cutter of the knife assembly that this utility model provides and push pedal, be not easy between the two to depart from, thus solve the problem retracting cutter disengaging push pedal in process.

Accompanying drawing explanation

Fig. 1 is the front view of this utility model knife assembly;

Fig. 2 is the axonometric chart of this utility model knife assembly;

Fig. 3 is the structural representation of this utility model anastomat.

Detailed description of the invention

Below with reference to detailed description of the invention shown in the drawings, this utility model is described in detail.But these embodiments do not limit this utility model, the structure that those of ordinary skill in the art makes according to these embodiments, method or conversion functionally are all included in protection domain of the present utility model.

Expression position described in this utility model and the word in direction are all using exercises on apparatus author as reference, and be near-end near one end of operator, the one end away from operator is far-end.

See the front view that Fig. 1 and Fig. 2, Fig. 1 are this utility model knife assemblies, Fig. 2 is the axonometric chart of this utility model knife assembly.Knife assembly of the present utility model is mainly used in Medical stapler, and as shown in Figures 1 and 2, described knife assembly comprises cutter 20 and push pedal 10; One of them of described cutter 20 and described push pedal 10 is provided with boss 11, and another is provided with the draw-in groove 21 coordinating described boss 11, and described cutter 20 are fixedly connected with described draw-in groove 21 by described boss 11 with described push pedal 10.

As shown in Figures 1 and 2, this utility model arranges boss 11 with one end of push pedal 10, and one end of cutter 20 correspondence arranges draw-in groove 21 for example simultaneously.Described cutter 20 of the present utility model also comprise blade 22, and blade 22 is arranged at the one end back to this draw-in groove 21.In order to fix described push pedal 10 and described cutter 20 better, this utility model preferably can be connected by multiple solder joint 22 between draw-in groove 21 and described boss 11, described multiple solder joint 22 is provided with spacing between any two, thus this draw-in groove 21 and this boss 11 can be stablized and coordinate and do not produce mutual motion, described multiple solder joint 22 is preferably laser weld, thus when ensureing that cooperation stablized mutually by draw-in groove 21 and boss 11, the use of solder can be reduced, reduce welding difficulty.Boss 11 of the present utility model and draw-in groove 21 comprise cooperatively interact comprise sidewall 111 and end face, as shown in Figure 1, sidewall 111 refers near the face of boss 11 with this push pedal 10 connection, at least one solder joint 22 is provided with between the sidewall 111 of this boss 11 and draw-in groove 21, retract in the process of cutter 20 in push pedal 10, the active force produced is less at the component at this sidewall 111 place, not easily make the solder joint 22 at sidewall 111 place split, thus can guarantee that push pedal 10 is not separated all the time with cutter 20 under this active force.In addition, the Breadth Maximum of boss 11 of the present utility model is not less than the A/F of draw-in groove 21, boss 11 slips into this draw-in groove 21 from side, Breadth Maximum due to boss 11 is not less than the A/F of draw-in groove 21, thus can ensure that described push pedal 10 is not separated in the direction of motion of this knife assembly with described cutter 20, retract in the process of cutter 20 in push pedal 10, the active force produced may make the solder joint 22 between boss 11 and draw-in groove 21 rupture, solder joint 22 particularly on the end face of boss 11 between draw-in groove 21, but the Breadth Maximum due to this boss 11 is not less than the A/F of draw-in groove 21, thus restriction is served to the relative motion between boss 11 and draw-in groove 21, the active force of butt welding point 22 also can reduce relatively, can prevent the solder joint between boss 11 and draw-in groove 21 from being ruptured by pullling.

As shown in Figure 2, described knife assembly also comprises upper cutter head 23 and lower tool rest 24, and described upper cutter head 23 is positioned at the top of described blade 22, and described lower tool rest 24 is positioned at the bottom of described blade 22.Described upper cutter head 23 and lower tool rest 24 are provided with injecting hole, can injection moulding on sliding surface in upper cutter head 23 and lower tool rest 24, injection moulding lubricating layer can reduce frictional force, thus reduces the frictional force of cutter in sliding process, makes cutting process more smooth and easy.The section shape of draw-in groove 21 of the present utility model is arc, or the abnormity be made up of many line segments, but not as limit.

This utility model also provides a kind of anastomat, and described anastomat comprises anastomat body 31, nail bin groupware 32 and knife assembly, and described nail bin groupware 32 is arranged at described anastomat body 31 far-end, and described nail bin groupware 32 comprises nail bin 33 and nail anvil 34; And knife assembly; The structure of described knife assembly can be described above, do not repeat them here, as shown in Figures 1 and 2, described knife assembly comprises cutter 20 and push pedal 10, described push pedal 10 is connected with described anastomat body 30, and described cutter 20 are arranged in the push broach groove on the housing of described nail bin 33, by the promotion of the driving mechanism in anastomat body 30, push pedal 10 promotes described cutter 20 and slides along push broach groove, thus realizes cutting and organizing.

Interfixed by draw-in groove 21 and boss 11 between the cutter 20 of knife assembly of the present utility model and push pedal 10, be not easy between the two to depart from, thus can avoid retracting cutter 20 in process and depart from push pedal 10, ensure carrying out smoothly of cutting process, in addition, add the fixation of the solder joint 22 between draw-in groove 21 and boss 11, can guarantee that push pedal 10 is not separated with cutter 20 further.

Be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.

A series of detailed description listed is above only illustrating for feasibility embodiment of the present utility model; they are also not used to limit protection domain of the present utility model, all do not depart from this utility model skill equivalent implementations of doing of spirit or change all should be included within protection domain of the present utility model.

Claims (9)

1. a knife assembly, in Medical stapler, described knife assembly comprises:

Cutter and push pedal; It is characterized in that,

One of them of described cutter and described push pedal is provided with boss, and another is provided with the draw-in groove coordinating described boss, and described cutter are fixedly connected with described draw-in groove by described boss with described push pedal.

2. knife assembly as claimed in claim 1, it is characterized in that, described draw-in groove and described boss are connected by multiple phase of solder joint.

3. knife assembly as claimed in claim 2, it is characterized in that, described multiple solder joint is provided with spacing between any two.

4. knife assembly as claimed in claim 2, it is characterized in that, described boss and described draw-in groove comprise the end face and sidewall that cooperatively interact, wherein, between the sidewall of described boss and described draw-in groove, are provided with at least one solder joint.

5. knife assembly as claimed in claim 1, it is characterized in that, the Breadth Maximum of this boss is not less than the A/F of this draw-in groove.

6. knife assembly as claimed in claim 1, it is characterized in that, the section shape of described draw-in groove is arc, or the abnormity be made up of many line segments.

7. knife assembly as claimed in claim 1, it is characterized in that, described boss is arranged on described cutter, and described draw-in groove is arranged in described push pedal.

8. knife assembly as claimed in claim 1, it is characterized in that, described cutter are linear type cutter.

9. a chamber mirror anastomat, comprising:

Anastomat body;

Nail bin groupware, described nail bin groupware is arranged at described anastomat body distal end, and described nail bin groupware comprises nail bin and nail anvil; And

As the knife assembly in claim 1-8 as described in any one.