Cutting knife device of anastomat

Abstract

The utility model discloses an anastomat cutting knife device which comprises a middle-end knife body, the middle-end knife body comprises a plurality of fishbone assemblies which are movably connected in sequence, the fishbone assemblies and a tail-end knife body are provided with front-end bosses, the fishbone assemblies and the front-end knife body are further provided with two turning bosses which are oppositely arranged, and the turning bosses are arranged in the middle-end knife body. A steering space is formed between the two steering bosses, rivet holes are formed in the front end boss and the two steering bosses, the front end boss is movably connected with the two steering bosses through rivets, and the front end boss can move in the steering space; a plurality of fishbone assemblies are arranged, so that the bent stress part of the knife body is divided into sections; compared with the prior art, the fishbone assemblies which are movably connected in sequence avoid plastic deformation caused by bending stress, and scratching is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of anastomat, especially to anastomat cutting knife device. BACKGROUND

[0002] In the use of anastomat, sometimes cutting work must be carried out under the condition of bending and thick tissue. The cutting knife in the existing anastomat is divided into a tool bit and a blade, the blade is composed of four thin pieces, and the thickness of the blade is two kinds, one is 0.25, and the other is 0.3. Two 0.25 cutting blades are placed on the inner side, and two 0.3 blades are placed on the outer side, and after positioning by a clamp, a complete cutting knife is formed by welding with the tool bit.

[0003] The existing cutting knife must be bent to realize cutting in the operation, after a certain amount of deformation stress, the metal starts to transition from the elastic state to the elastic plastic state, and finally leads to plastic deformation of the cutting knife. After the plastic deformation of the cutting knife, when the cutting knife is retracted, it is inevitable to scratch the nail seat or the tool holder, resulting in that the coating of the nail seat and the debris of the tool holder are attached to the cutting knife, and the anastomat will leave a small amount of debris on the human tissue in the next operation. This situation has certain risk in the operation. SUMMARY

[0004] The utility model overcomes the insufficient prior art and provides anastomat cutting knife device.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of anastomat cutting knife device, which comprises: a front end blade body, a middle end blade body connected with the front end blade body, and a tail end blade body movably connected with the middle end blade body.

[0006] The middle end blade body comprises a plurality of fishbone assemblies movably connected in sequence, the fishbone assemblies and the tail end blade body are provided with a front end boss, the fishbone assemblies and the front end blade body are further provided with two oppositely arranged turning bosses, a turning space is formed between the two turning bosses, the front end boss and the two turning bosses are provided with rivet holes, and the front end boss and the two turning bosses are movably connected through the rivets.

[0007] The front end blade body comprises a blade body main body, and a tool bit is arranged in the blade body main body.

[0008] In a preferred embodiment of the utility model, the front end boss is arc-shaped.

[0009] In a preferred embodiment of the utility model, the movable connection is rotary connection.

[0010] In a preferred embodiment of the utility model, the fishbone assembly side wall is further provided with a steering limiting platform, and the steering limiting platform is in line contact with the steering boss.

[0011] In a preferred embodiment of the utility model, the middle end cutter body bending angle is 0°-70°.

[0012] In a preferred embodiment of the utility model, the distance between the front end boss and the other fishbone assembly is at least 5mm.

[0013] In a preferred embodiment of the utility model, the material of the fishbone assembly is stainless steel.

[0014] The utility model solves the defects in the background art, and has the following beneficial effects:

[0015] (1) by adopting the middle end cutter body, it comprises a plurality of fishbone assemblies which are movably connected in sequence, the fishbone assembly and the tail end cutter body are provided with a front end boss, the fishbone assembly and the front end cutter body are further provided with two oppositely arranged steering bosses, a steering space is formed between the two steering bosses, the front end boss and the two steering bosses are provided with rivet holes, the front end boss and the two steering bosses are movably connected through the rivets, and the front end boss can move in the steering space.

[0016] (2) by arranging the front end boss in an arc shape, meanwhile, the steering limiting platform is in line contact with the steering boss; the contact between the steering boss and the steering limiting platform is reduced, and excessive scratching during rotation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be further described below in combination with the drawings and embodiments;

[0018] Figure 1 It is the perspective structural drawing of the preferred embodiment of the utility model;

[0019] Figure 2 It is the perspective structural drawing of the fishbone assembly of the utility model;

[0020] In the drawing: 1, front end cutter body; 11, cutter body main body; 12, cutter head; 2, middle end cutter body; 21, fishbone assembly; 3, tail end cutter body; 4, front end boss; 5, steering boss; 6, steering limiting platform. DETAILED DESCRIPTION

[0021] The utility model will be further explained in detail in combination with the drawings and embodiments, these drawings are all simplified schematic diagram, only with the schematic way the basic structure of the utility model is explained, therefore it only shows the related structure of the utility model.

[0022] As Figure 1 The cutting knife device of anastomat includes: the front end sword body 1, with the front end sword body 1 connection's middle end sword body 2, with the middle end sword body 2 swing joint's tail end sword body 3;

[0023] Specifically, the tail end sword body 3 swing joint with the last fishbone component 21 of the middle end sword body 2, can control its movement by hand or mechanical mode, to drive the bending of the whole cutting knife device.

[0024] As Figure 2 The middle end sword body 2 includes several fishbone components 21 swing joint in sequence, the fishbone component 21, the tail end sword body 3 are set up with the front end boss 4, the fishbone component 21, the front end sword body 1 is also set up with two opposite steering boss 5, and the steering space is formed between two steering boss 5, the front end boss 4 is set up with rivet hole with two steering boss 5, the front end boss 4 is swing joint with two steering boss 5 through rivet, and the front end boss 4 can swing in the steering space;Further, the swing joint is rotary joint.

[0025] Specifically, the steering boss 5 is set up on the fishbone component 21 and the tail end sword body 3, cooperates with the front end boss 4 to form the steering space, allows the front end boss 4 to swing in the steering space, realizes the bending of the middle end sword body 2.

[0026] The front end sword body 1 includes sword body main body 11, and the cutter head 12 is set up in the sword body main body 11;

[0027] Specifically, the front end sword body 1 includes sword body main body 11, and the cutter head 12 is set up in the sword body main body 11;

[0028] Further, the front end boss 4 is arc-shaped.

[0029] Specifically, the front end boss 4 is set up on each fishbone component 21, and the boss is arc-shaped, facilitates the cooperation with the steering boss 5 when bending, reduces stress concentration.

[0030] Further, the fishbone component 21 side wall is also set up with steering limiting platform 6, and the steering limiting platform 6 is in line contact with the steering boss 5.

[0031] Specifically, the side wall of the fishbone assembly 21 is also provided with a turning limiting platform 6, which is in line contact with the turning boss 5, used to limit the bending angle of the middle end blade body 2, to prevent damage caused by excessive bending.

[0032] Further, the bending angle of the middle end blade body 2 is 0°-70°.

[0033] Further, the distance between the front end boss 4 and another fishbone assembly 21 is at least 5mm.

[0034] Specifically, the distance between the front end boss 4 and another fishbone assembly 21 is set to at least 5mm, which can ensure that there is enough space between the components during bending, avoiding mutual extrusion and damage, because the connection between the front end boss 4 and the fishbone assembly 21 is achieved by rivets and other fasteners, and the distance between them is crucial to the stability and durability of the device. If the distance is too small, it may cause friction and collision between adjacent components during bending, increasing the risk of stress concentration and damage. Therefore, the distance between the front end boss 4 and another fishbone assembly 21 is set to at least 5mm.

[0035] Further, the material of the fishbone assembly 21 is stainless steel.

[0036] Specifically, in the cutting knife device, the fishbone assembly 21 is a key component that bears bending stress and connects other components, and needs to have good mechanical properties and corrosion resistance. Selecting stainless steel as the material of the fishbone assembly 21 can ensure that it maintains stable performance during surgery and is not easily corroded or damaged.

[0037] After use, the cutting knife device should be thoroughly cleaned and disinfected. Appropriate cleaning agents and disinfectants can be used to remove residual blood, tissue fragments and other contaminants. After cleaning, the cutting knife device should be placed in a dry and well-ventilated environment to avoid corrosion and damage.

[0038] Regular inspection and maintenance of the cutting knife device is also crucial to ensure its long-term stable operation. The connection status, wear and damage of each component should be checked. If damaged or severely worn components are found, they should be replaced in time to ensure the safety and effectiveness of the operation

[0039] When the utility model is used, the medical staff holds the tail end blade body 3, controls its movement by manual or mechanical method, makes the middle end blade body 2 bend according to the operation demand;During bending, the front end boss 4 moves in the turning space, cooperates with the turning boss 5, realizes smooth bending action;The line contact between the turning limiting platform 6 and the turning boss 5 limits the bending angle of the middle end blade body 2, ensures that the bending range is within the safe range;The cutter head 12 of the front end blade body 1 is aligned with the tissue to be cut, and appropriate pressure is applied for cutting.

[0040] The above is based on the ideal embodiment of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A stapler cutting blade device, characterized in that, include: The front blade (1), the middle blade (2) connected to the front blade (1), and the tail blade (3) movably connected to the middle blade (2); The middle blade (2) includes several fishbone components (21) connected in sequence. The fishbone components (21) and the tail blade (3) are provided with a front end boss (4). The fishbone components (21) and the front end blade (1) are also provided with two opposing turning bosses (5). A turning space is formed between the two turning bosses (5). The front end boss (4) and the two turning bosses (5) are provided with rivet holes. The front end boss (4) and the two turning bosses (5) are movably connected by rivets. The front end boss (4) can move within the turning space. The front blade (1) includes a blade body (11) and a blade head (12) formed on the blade body (11).

2. The anastomosis device cutting blade according to claim 1, characterized in that: The front end boss (4) is arc-shaped.

3. The anastomosis device cutting blade according to claim 1, characterized in that: The active connection is a rotational connection.

4. The anastomosis device cutting blade according to claim 1, characterized in that: The fishbone assembly (21) is also provided with a steering limiting platform (6) on its side wall, and the steering limiting platform (6) is in line contact with the steering boss (5).

5. The anastomosis device cutting blade according to claim 1, characterized in that: The bending angle of the middle blade (2) is 0°-70°.

6. The anastomosis device cutting blade according to claim 1, characterized in that: The distance between the front end boss (4) and the other fishbone component (21) is at least 5 mm.

7. The anastomosis device cutting blade according to claim 1, characterized in that: The fishbone component (21) is made of stainless steel.

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