CN220655639U

CN220655639U - Surgical knife

Info

Publication number: CN220655639U
Application number: CN202321819410.XU
Authority: CN
Inventors: 徐学术
Original assignee: Mohua Medical Technology Guangzhou Co ltd
Current assignee: Mohua Medical Technology Guangzhou Co ltd
Priority date: 2023-07-11
Filing date: 2023-07-11
Publication date: 2024-03-26
Anticipated expiration: 2033-07-11

Abstract

The utility model relates to a surgical knife which comprises a knife handle and a knife blade, wherein the knife handle is provided with a clamping protrusion, the knife blade is provided with an opening matched with the clamping protrusion, the clamping protrusion penetrates through the opening, and the surgical knife further comprises a limiting part which is fixedly connected with the upper end of the clamping protrusion and is abutted against the side face of the knife blade. The utility model can solve the technical problem of blade fixation of the scalpel, thereby ensuring the safety and efficiency of the operation.

Description

Surgical knife

Technical Field

The utility model relates to the technical field of surgical instruments, in particular to a surgical knife.

Background

During surgery, a scalpel is one of the important tools in the hands of a doctor, and the accuracy and safety of use are directly related to the success or failure of surgery. During the use of the scalpel, the blade needs to be replaced periodically due to abrasion and fatigue of the blade so as to ensure the efficiency and accuracy of the operation. If the blade is not replaced timely or is inconvenient to replace, the problems of poor cutting effect, overlong operation time and the like in the operation process can be caused, the problems not only can influence the effect and quality of the operation, but also can bring a certain risk to doctors and patients.

However, in practical use, the scalpel with the replaceable blade also has a use problem that the blade is easy to fall off, and certain potential danger is brought to the operation.

Disclosure of Invention

In order to overcome the defects of the prior art, the technical problem to be solved by the utility model is to provide the surgical knife, which can solve the technical problem of fixing the blade of the surgical knife and prevent the blade from falling off, thereby ensuring the safety and the efficiency of the operation.

To achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a surgical knife which comprises a knife handle and a knife blade, wherein the knife handle is provided with a clamping protrusion, the knife blade is provided with an opening matched with the clamping protrusion, the clamping protrusion penetrates through the opening, and the surgical knife further comprises a limiting part fixedly connected with the upper end of the clamping protrusion, and the limiting part is abutted against the side face of the knife blade.

The preferable technical scheme of the utility model is that the clamping protrusion and the opening are in a strip shape.

The preferable technical scheme of the utility model is that two limiting parts are arranged and are respectively positioned at the head end and the tail end of the clamping bulge.

The preferable technical scheme of the utility model is that the clamping protrusion is formed by splicing two long strips with different widths.

The preferable technical scheme of the utility model is that the joint of two long strips with different widths is provided with a chamfer angle of 35-55 degrees.

The preferable technical scheme of the utility model is that the tool holder is provided with a containing groove, and the depth of the containing groove is more than or equal to the thickness of the blade.

The preferable technical scheme of the utility model is that the limiting part is sheet-shaped.

The preferable technical proposal of the utility model is that the knife handle is also provided with a non-slip protrusion.

The blade is arranged in the protective sleeve.

The preferable technical scheme of the utility model is that the material of the knife handle and the limiting part is plastic, and the material of the knife blade is stainless steel.

The utility model has the beneficial effects that:

according to the scalpel provided by the utility model, after the blade and the handle are clamped and matched through the clamping protrusions and the perforated structure, the blade is limited between the limiting part and the surface side of the handle by arranging the limiting part, so that the danger caused by accidental falling and flying of the blade in the using process of the scalpel is prevented, and the safety and efficiency of an operation are ensured.

In addition, the utility model has the following advantages: 1. the preparation is implemented based on the current replacement type scalpel, the materials of the blade and the scalpel handle are selected separately, and the production cost is low; 2. the production and preparation steps are simple and convenient to operate, and are convenient and practical; 3. the product has simple structure and low requirement on assembly and processing.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

Fig. 1 is a perspective view of a scalpel of a first embodiment;

FIG. 2 is an exploded view of a scalpel of the first embodiment;

FIG. 3 is a perspective view of a handle of the first embodiment;

fig. 4 is a perspective view of a scalpel covered with a protective sheath according to a first embodiment.

In the figure:

1-a knife handle; 11-a containing groove; 12-a cleat boss; 2-blade; 21-side; 3-clamping the bulge; 4-perforating; 5-a limiting part; and 6, protecting the sleeve.

Detailed Description

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

Example 1

As shown in fig. 1-4, the surgical knife provided in this embodiment includes a handle 1 and a blade 2, wherein a clamping protrusion 3 is provided on the handle 1, the blade 2 is provided with an opening 4 adapted to the clamping protrusion 3, the clamping protrusion 3 passes through the opening 4, and further includes a limiting portion 5, the limiting portion 5 is fixedly connected with one side of the upper end of the clamping protrusion 3, and the limiting portion 5 abuts against a side 21 of the blade 2. In order to prevent the blade from being exposed to hurt people during the idle process, the blade protection device also comprises a protection sleeve 6, wherein the protection sleeve 6 is detachably connected with one end of the knife handle 1, and the blade 2 is positioned in the protection sleeve 6. The scalpel is provided with the limiting part, so that the blade is limited between the limiting part and the surface side of the handle, and the blade is prevented from accidentally falling off and flying out to cause danger in the use process of the scalpel, and the safety and the efficiency of the operation are ensured.

Preferably, the clamping protrusion 3 and the opening 4 are in an elongated shape, and the shapes and the sizes of the clamping protrusion and the opening are matched. The strip-shaped clamping bulges and the open pore structure can uniformly distribute the pressure between the blade and the hilt, so that the blade is fixed more firmly and is not easy to fall off. In addition, the strip-shaped design can also provide a larger contact area, so that the friction force between the blade and the hilt is improved, and the position of the blade is more stable. Specifically, the clamping protrusion 3 is formed by splicing two first long strips 31 and second long strips 32 with different widths. The stability of the clamping structure can be further improved. Preferably, the junction of two strips of different widths is provided with a chamfer of 35-55 °. The chamfer of 35-55 degrees can form a stable structure at the joint of two long strips, so that the overall stability of the scalpel can be enhanced, the blade is more stable and accurate in operation, and the stress concentration of the material of the clamping protrusion at the joint can be reduced, thereby reducing the fatigue degree of the material. In this embodiment, the chamfer is selected to be 45 °.

Preferably, two limiting parts 5 are arranged and are respectively positioned at the head end and the tail end of the clamping protrusion 3. The setting of spacing portion can increase the stability of scalpel, limits the scope of blade removal, guarantees the precision and the stability of scalpel when using. Specifically, the limiting part 5 is sheet-shaped, which is beneficial to saving materials and convenient for processing and assembly.

Specifically, the handle 1 is further provided with a wave-shaped anti-slip protrusion 12. The anti-slip bulge can increase the friction force of surgical personnel when holding the scalpel, improve the holding force, reduce the possibility of the scalpel slipping off, and increase the surgical safety. In addition, the wavy structure is favorable for reducing hand fatigue feeling when a surgical staff holds the scalpel and improving use comfort.

Preferably, the material of the knife handle 1 is plastic, the material of the knife blade 2 is stainless steel, and the material of the limiting part 5 is plastic. The cost of plastic is relatively low and the rotation of the material separating the two parts contributes to a reduction in the cost of the overall product, even if used directly as a disposable scalpel, its cost of sales is relatively low. In this embodiment, the handle 1 and the limiting portion 5 are made of ABS, and the blade 2 is made of 440C steel. The knife handle is made of plastic particle raw materials through injection molding, and after the processed knife blade is embedded into the clamping protrusion with proper size and shape, the upper ends of the limiting part and the clamping protrusion are fixed through an ultrasonic welding process, so that the position of the knife blade is clamped to prevent loosening and falling.

In order to prevent the blade from protruding too much, which is disadvantageous for the protective sleeve on the scalpel sleeve, the handle 1 is preferably provided with a receiving groove 11, and the depth of the receiving groove 11 is greater than or equal to the thickness of the blade 2. In this embodiment, the depth of the accommodating groove 11 is equal to the thickness of the insert 2.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the utility model. The utility model is not to be limited by the specific embodiments disclosed herein, and other embodiments are within the scope of the utility model as defined by the claims of the present application.

Claims

1. A surgical knife, characterized in that:

comprises a knife handle (1) and a knife blade (2);

the knife handle (1) is provided with a clamping protrusion (3), the knife blade (2) is provided with an opening (4) matched with the clamping protrusion (3), and the clamping protrusion (3) penetrates through the opening (4);

the cutting tool further comprises a limiting part (5), the limiting part (5) is fixedly connected with the upper end of the clamping protrusion (3), and the limiting part (5) is propped against the side face (21) of the blade (2).

2. The scalpel according to claim 1, wherein:

the clamping bulge (3) and the opening (4) are in a strip shape.

3. The scalpel according to claim 2, wherein:

the limiting parts (5) are arranged at two ends of the clamping protrusion (3).

4. The scalpel according to claim 2, wherein:

the clamping bulges (3) are formed by splicing two long strips with different widths.

5. The scalpel according to claim 2, wherein:

the joint of two long strips with different widths is provided with a chamfer angle of 35-55 degrees.

6. The scalpel according to claim 1, wherein:

the knife handle (1) is provided with a containing groove (11), and the depth of the containing groove (11) is larger than or equal to the thickness of the knife blade (2).

7. The scalpel according to claim 1, wherein:

the limiting part (5) is sheet-shaped.

8. The scalpel according to claim 1, wherein:

the knife handle (1) is also provided with an anti-slip bulge (12).

9. The scalpel according to claim 1, wherein:

also comprises a protective sleeve (6);

the protective sleeve (6) is detachably connected with one end of the knife handle (1), and the knife blade (2) is positioned in the protective sleeve (6).

10. The scalpel according to claim 1, wherein:

the knife handle (1) and the limiting part (5) are made of plastic, and the knife blade (2) is made of stainless steel.