CN209864259U - Multi-angle cornea incision knife - Google Patents

Abstract

The utility model relates to a multi-angle cornea incision sword, the cutting edge have with the back of a knife is a plurality of cutting edge sections of different angles, through the cutting edge section with the angle that the back of a knife formed increases in proper order from the direction of tool bit top to tool bit afterbody. Thereby form the bigger top cutting edge of contained angle at the tool bit top to make the cornea incision sword pierce through eye tissue more easily, also greatly increased knife tip puncture strength, stopped the risk that the knife tip dropped, was broken in the use, reduced the doctor and operated the degree of difficulty, reduced patient postoperative complication.

Description

Multi-angle cornea incision knife

Technical Field

The application belongs to the technical field of medical surgical instruments, and particularly relates to a multi-angle cornea incision knife.

Background

Currently, in the field of scalpels, especially in the field of ophthalmic scalpels, such as corneal incision scalpels, doctors use scalpels to make incisions for the eyeballs of patients, and such incisions bring great inconvenience to the operation of the doctors when the scalpel heads are not sharp enough, so the angle of the knife tip is very small, as shown in fig. 1, the scalpel is easy to pierce the eye tissue, but the angle a in fig. 1 is too small, and the puncture strength of the knife tip is weak, which may cause the risk that the knife tip falls off and breaks off in the using process.

Therefore, the technical personnel in the field need to provide a cutting tool for increasing the puncture strength of the cutting tool tip, preventing the risk that the cutting tool tip falls off and is broken off in the using process, reducing the operation difficulty of doctors and reducing the postoperative complications of patients.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: aims to solve the defects in the prior art, thereby providing the multi-angle cornea incision knife which can prevent the knife tip from dropping and breaking off in the use process.

The utility model provides a technical scheme that its technical problem adopted is:

a multi-angle keratotomy blade, comprising:

a knife handle;

the cutter head is integrally arranged at the top of the cutter handle, the two sides of the cutter head are respectively a cutter back parallel to the central axis of the cutter handle and a cutting edge, the cutting edge is provided with a plurality of cutter edge sections which are at different angles with the cutter back, and the angles formed by the cutter edge sections and the cutter back are sequentially increased from the top of the cutter head to the tail of the cutter head.

Preferably, the utility model discloses a multi-angle cornea incision sword, the sword section is two.

Preferably, the multi-angle cornea incision knife of the utility model has an angle of 15 ° ± 3 ° formed between the blade section near the top of the knife head and the knife back.

Preferably, the multi-angle cornea incision knife of the utility model has the blade section which is far away from the top of the knife head in the two blade sections and the angle formed by the knife back being 35 degrees +/-3 degrees.

Preferably, the multi-angle cornea incision knife of the utility model has three blade sections.

Preferably, the utility model discloses a multi-angle cornea incision sword, in the three sword section, be close to the sword section at tool bit top with the angle that the back of a knife blade formed is 10 +/-3, middle sword section with the angle that the back of a knife blade formed is 15 +/-3, be close to the sword section of tool bit afterbody with the angle that the back of a knife blade formed is 35 +/-3.

Preferably, the multi-angle cornea incision knife of the utility model has an arc transition section at the connecting part of two adjacent blade sections.

Preferably, the multi-angle corneal incision knife of the present invention is made of 316L medical stainless steel.

The utility model has the advantages that:

the utility model discloses a multi-angle cornea incision sword, the cutting edge have with the back of a knife blade is a plurality of cutting edge sections of different angles, through the cutting edge section with the angle that the back of a knife blade formed increases in proper order from the direction of tool bit top to tool bit afterbody. Thereby form the bigger top cutting edge of contained angle at the tool bit top to make the cornea incision sword pierce through eye tissue more easily, also greatly increased knife tip puncture strength, stopped the risk that the knife tip dropped, was broken in the use, reduced the doctor and operated the degree of difficulty, reduced patient postoperative complication.

Drawings

The technical solution of the present application is further explained below with reference to the drawings and the embodiments.

FIG. 1 is a schematic view of a prior art corneal incision knife;

FIG. 2 is a schematic view showing the structure of a multi-angle keratotomy in example 1;

FIG. 3 is a schematic view showing the structure of a multi-angle keratotomy in example 2;

the reference numbers in the figures are:

1-a knife handle; 2-a cutter head; 20-knife back; 21-knife edge.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the scope of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, unless otherwise specified, "a plurality" means two or more.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

The technical solutions of the present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

The present embodiment provides a multi-angle keratotomy blade, as shown in fig. 2, comprising:

a knife handle 1;

tool bit 2, an organic whole sets up 1 top of handle of a knife, the both sides of tool bit 2 are respectively for the back of a knife 20 and the cutting edge 21 parallel with 1 axis of handle of a knife, cutting edge 21 have with back of a knife 20 is a plurality of cutting edge sections of different angles, just cutting edge section with the angle that back of a knife 20 formed increases in proper order from 2 tops of tool bit to the direction of 2 afterbody of tool bit.

The number of the blade sections is two. The edge segment of the two edge segments near the top of the cutting head 2 makes an angle of 15 ° ± 3 ° (angle a in fig. 2) with said back 20. The edge segment of the two edge segments remote from the top of the cutting head 2 makes an angle of 35 ° ± 3 ° (angle B in fig. 2) with said back 20.

Example 2

The present embodiment provides a multi-angle keratotomy blade, as shown in fig. 3, comprising:

a knife handle 1;

tool bit 2, an organic whole sets up 1 top of handle of a knife, the both sides of tool bit 2 are respectively for the back of a knife 20 and the cutting edge 21 parallel with 1 axis of handle of a knife, cutting edge 21 have with back of a knife 20 is a plurality of cutting edge sections of different angles, just cutting edge section with the angle that back of a knife 20 formed increases in proper order from 2 tops of tool bit to the direction of 2 afterbody of tool bit. The number of the blade sections is three. Of the three edge segments, the edge segment near the top of the tool bit 2 forms an angle of 10 ° ± 3 ° (angle D in the drawing), the middle edge segment forms an angle of 15 ° ± 3 ° (angle E in the drawing) with the tool back 20, and the edge segment near the tail of the tool bit 2 forms an angle of 35 ° ± 3 ° (angle F in the drawing) with the tool back 20.

The shank 1 may be inserted into a plastic or wood handle.

In the embodiments 1 and 2, the connecting part of two adjacent blade sections has an arc transition section. And the arc chamfer structure of the arc transition section is added, so that the puncture resistance is further reduced. The multi-angle cornea incision knife is made of 316L medical stainless steel.

In the multi-angle keratotomy blades of the two embodiments, the blade 21 has a plurality of blade sections with different angles with the blade back 20, and the angles formed by the blade sections and the blade back 20 increase in sequence from the top of the blade head 2 to the tail of the blade head 2. Thereby form the bigger top cutting edge 21 of contained angle at tool bit 2 top to make the cornea incision sword pierce through eye tissue more easily, also greatly increased knife tip puncture strength, stopped the risk that the knife tip drops, breaks in the use, reduced doctor's operation degree of difficulty, reduced patient postoperative complication.

In light of the foregoing description of the preferred embodiments according to the present application, it is to be understood that various changes and modifications may be made without departing from the spirit and scope of the invention. The technical scope of the present application is not limited to the contents of the specification, and must be determined according to the scope of the claims.

Claims (8)

1. A multi-angle keratotomy blade, comprising:

a knife handle (1);

tool bit (2), integrative setting is in handle of a knife (1) top, the both sides of tool bit (2) are back of a knife (20) and cutting edge (21) parallel with handle of a knife (1) axis respectively, cutting edge (21) have with back of a knife (20) are a plurality of cutting edge sections of different angles, just the cutting edge section with the angle that back of a knife (20) formed increases in proper order from tool bit (2) top to the direction of tool bit (2) afterbody.

2. The multi-angle keratotomy blade of claim 1, wherein there are two blade segments.

3. The multi-angle keratotomy as claimed in claim 2, wherein the blade section of the two blade sections near the tip of the cutting head (2) makes an angle of 15 ° ± 3 ° with the blade back (20).

4. The multi-angle keratotomy as claimed in claim 3, wherein the angle formed by the edge section of the two edge sections remote from the tip of the cutting head (2) and the blade back (20) is 35 ° ± 3 °.

5. The multi-angle keratotomy blade of claim 1, wherein said blade segments are three.

6. The multi-angle keratotomy as claimed in claim 5, wherein, of the three blade segments, the blade segment near the top of the cutting head (2) forms an angle of 10 ° ± 3 ° with the back (20), the middle blade segment forms an angle of 15 ° ± 3 ° with the back (20), and the blade segment near the tail of the cutting head (2) forms an angle of 35 ° ± 3 ° with the back (20).

7. The multi-angle keratotomy blade as claimed in any one of claims 1 to 6, wherein the connecting portion of two adjacent blade sections has an arc-shaped transition section.

8. The multi-angle keratotomy blade of any of claims 1-6, wherein the multi-angle keratotomy blade is made of 316L medical stainless steel.