CN216091026U

CN216091026U - Ophthalmic surgical blade and knife

Info

Publication number: CN216091026U
Application number: CN202122274480.9U
Authority: CN
Inventors: 任青生; 解江冰
Original assignee: Eyebright Suzhou Medical Apparatus And Instruments Co ltd
Current assignee: Eyebright Suzhou Medical Apparatus And Instruments Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-03-22
Anticipated expiration: 2031-09-18

Abstract

The utility model provides a cutter head and a cutter for ophthalmic surgery. The cutter head for an ophthalmic scalpel includes: the cutting edge comprises an edge surface, and a first edge is arranged on the edge surface; the ophthalmic scalpel comprises a scalpel back, wherein a reinforcing section is arranged at the position, close to the top of a scalpel head for the ophthalmic scalpel, of the scalpel back and is connected with the scalpel back and a scalpel edge; the reinforcing section is provided with a second edge, and the first edge and the second edge are intersected to form a tool nose. The technical scheme of the utility model can meet the requirements of the ophthalmic scalpel on the strength of the tool tip and the puncture effect at the same time.

Description

Ophthalmic surgical blade and knife

Technical Field

The utility model relates to the field of medical surgical instruments, in particular to a cutter head and a cutter for ophthalmic surgery.

Background

In the field of scalpels, particularly in the field of ophthalmic scalpels, for example, a corneal incision knife and the like, a doctor uses the scalpels to perform a puncture incision on an eyeball of a patient, and under the condition that a knife head is not sharp enough, great inconvenience is brought to the operation of the doctor, so that the angle of the knife tip is very small, as shown in fig. 1, the scalpel is easy to puncture eye tissues, but the angle A in fig. 1 is too small, the puncture strength of the knife tip is weak, and the risk that the knife tip falls off and is broken off in the using process can be caused. Therefore, it is necessary to provide an ophthalmic surgical blade having a blade tip with high strength and being less likely to fall off during use.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a scalpel head and a scalpel for ophthalmologic operation, and aims to solve the problem that the requirements of the scalpel head for the ophthalmologic operation on the strength of a scalpel blade and the puncture effect cannot be met simultaneously in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided an ophthalmic-scalpel head including: the cutting edge comprises an edge surface, and a first edge is arranged on the edge surface; the ophthalmic scalpel comprises a scalpel back, wherein a reinforcing section is arranged at the position, close to the top of a scalpel head for the ophthalmic scalpel, of the scalpel back and is connected with the scalpel back and a scalpel edge; the reinforcing section is provided with a second edge, and the first edge and the second edge are intersected to form a tool nose.

Further, the outer contour line of the reinforcing segment is a straight line or a curved line.

Furthermore, an included angle alpha 1 is formed between the blade edge and the knife back, and the range of the included angle alpha 1 is 15-45 degrees.

Further, the included angle α 1 ranges from 30 ° to 45 °.

Furthermore, an included angle beta 1 is formed between the reinforcing section and the knife back, and the range of the included angle beta 1 is 5-20 degrees.

Further, the tool bit for the ophthalmic scalpel comprises two reinforcing sections, and the two reinforcing sections are symmetrically arranged relative to the central axis of the scalpel back.

Further, the cutting edge comprises two facets, the intersection of the two facets forming a first edge.

Further, the reinforcing section comprises two reinforcing section edge faces formed by inclined surfaces, and the intersection line of the two reinforcing section edge faces forms a second edge.

Furthermore, at least the part of the knife back close to the reinforcing section is provided with a third edge connected with the second edge.

According to another aspect of the present invention, there is provided an ophthalmic scalpel including the above-described ophthalmic scalpel head and a holder connected to the ophthalmic scalpel head.

By applying the technical scheme of the utility model, the first edge is arranged on the blade, so that the cutter head is relatively sharp, and the cutter head is ensured to have a certain puncture effect; the knife back is provided with the reinforcing section, so that the angle range of the included angle between the knife back and the knife edge and the included angle between the reinforcing section and the knife back can be limited, and the knife edge and the knife back form a knife tip with a larger angle at the top of the knife head, so that the knife tip has enough strength, the risk that the knife tip falls off in the operation process can be reduced, and the safety of the operation is improved; simultaneously, set up the second sword limit on strengthening the section, make the tool bit have two sword limits, sharper, have better puncture effect to make ophthalmic surgery sword satisfy the demand of ophthalmic surgery to the knife tip intensity of scalpel and puncture effect simultaneously.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 shows a schematic view of a prior art ophthalmic scalpel;

fig. 2 is a schematic structural view of an ophthalmic surgical knife according to a first embodiment of the present invention;

FIG. 3 shows a partial enlarged view of FIG. 2;

FIG. 4 is a schematic structural view of a second ophthalmic scalpel according to a second embodiment of the present invention;

FIG. 5 is a perspective view showing a second embodiment of the ophthalmic scalpel according to the present invention;

FIG. 6 shows an enlarged partial view of the ophthalmic surgical blade of FIG. 4 according to the present invention;

FIG. 7 shows a top view of the ophthalmic surgical blade of FIG. 5 according to the present invention; and

fig. 8 shows a sectional view in the direction F-F of the ophthalmic-surgical-use blade of fig. 4 according to the present invention.

Wherein the figures include the following reference numerals:

10. a connecting portion; 20. a cutter head; 21. a back of a knife; 22. a blade; 221. a first blade edge; 222. a blade face; 23. a first side surface; 24. a second side surface; 25. a knife tip; 30. a reinforcement section; 31. a second 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. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The ophthalmic surgical blade is made of 316L stainless steel for medical use.

In order to solve the problem that the blade tip of the ophthalmic scalpel in the prior art is easy to fall off and break off in the using process, the inventor of the present application and the present application firstly proposes a technical scheme to ensure the strength of the blade tip, specifically referring to the blade tip for ophthalmic surgery shown in fig. 2 and 3.

The ophthalmic surgical knife head 20 comprises a knife back 21 and a knife edge 22, wherein a reinforcing section 30 is arranged at the position, close to the top of the knife back 21, of the knife back, the knife edge 22 comprises a knife face 222, and a first edge 221 is arranged on the knife face 222; the reinforcing section 30 is connected with the knife back 21 and the knife edge 22 respectively, and the reinforcing section 30 and the first edge 221 form a knife tip 25.

Through the arrangement, an included angle beta 1 is formed between the reinforcing section 30 and the knife back 21, so that the angle of the knife tip 25 is changed into (alpha 1+ beta 1), the strength of the knife tip is increased, and the risk of the knife tip falling in the using process is greatly reduced. In the above embodiment, the piercing effect of the cutter head of this embodiment is slightly weaker than that of the cutter head not provided with the reinforcing segment 30.

In order to provide a cutting tip that can satisfy the cutting tip strength and ensure the cutting tip piercing effect, the applicant further developed a cutting tip in which the reinforcing section 30 is provided with a second blade edge 31 connected to the first blade edge 221, and the first blade edge 221 and the second blade edge 31 intersect to form the cutting tip 25.

In the technical scheme, the first blade edge 221 is arranged on the blade 22, so that the ophthalmic surgical knife head 20 is relatively sharp, and the ophthalmic surgical knife head 20 is ensured to have a certain puncture effect; the second edge 31 (as shown in fig. 5 and 6) is further arranged on the reinforcing section 30, and through the arrangement, the ophthalmic surgical cutter head 20 is respectively provided with edges on the cutter back 21 and the cutter edge 22, so that the strength can be increased, the risk of falling of the cutter point can be reduced, the ophthalmic surgical cutter head 20 can be sharper, a better puncture effect can be achieved, meanwhile, further damage to eye tissues of a patient in the surgical process can be avoided, and postoperative complications of the patient can be reduced; the first edge 221 formed on the blade 22 is connected with the second edge 31 formed on the blade back 21, so that the first edge 221 and the second edge 31 together form a sharper and stronger blade tip 25, and thus, the ophthalmic surgical blade 20 has a better puncturing effect; in conclusion, the ophthalmic scalpel can meet the requirements of the ophthalmic scalpel on the strength and the puncture effect simultaneously.

Specifically, the knife back 21 is provided with the reinforcing section 30, the knife back 21 and the knife edge 22 are connected through the reinforcing section 30, and the knife edge 22 and the knife back 21 form a knife tip 25 with a larger angle at the top of the ophthalmic surgical knife head 20, so that the knife tip 25 has enough strength, the risk that the knife tip 25 falls off and is broken in the operation process can be reduced, and the safety of the operation is improved.

Preferably, as shown in fig. 4, the ophthalmic-surgical-use blade 20 further includes a first side surface 23 and a second side surface 24 parallel to and opposite the first side surface 23. The back 21 is used for connecting the back 21 of the first side surface 23 and the second side surface 24, and the blade 22 is respectively connected with the first side surface 23 and the second side surface 24.

Providing a first side 23, a second side 24, a back 21 and a blade 22, which together define an ophthalmic surgical blade 20; the blade 22 is provided with a blade face 222 for forming a first blade edge 221 so that the ophthalmic-surgery-use blade 20 has a relatively sharp blade 22 and is easy to pierce eye tissues; by providing the back 21, the first side 23 and the second side 24 can be connected, and at the same time, the back 21 is used for providing the reinforcing section 30, so that the blade 22 and the back 21 form a blade tip 25 with a larger angle at the top of the ophthalmic surgical blade 20, and thus, the blade tip 25 has sufficient strength, and the risk that the blade tip 25 falls off during operation can be reduced, thereby improving the safety of the operation.

In addition, the utility model is also provided with a knife handle, which is convenient for the doctor to hold the cornea incision knife during the operation. The tool tip 20 is connected to the tool shank via the connecting portion 10.

Optionally, the reinforcing section 30 comprises a chamfer. The outer contour of the reinforcing segment 30 is either straight or curved. It should be noted that the outer contour line refers to a contour line of an orthographic projection of the reinforcement segment 30 (e.g., a projection of the reinforcement segment 30 on the first side 23 or the second side 24). Preferably, in the present embodiment, the outer contour line of the reinforcing segment 30 is a straight line.

Specifically, as shown in fig. 4, the back 21 is parallel to the central axis of the connecting portion 10, and the cutting edge 22 is disposed obliquely, i.e., the cutting edge 22 and the back 21 form an included angle therebetween.

As shown in fig. 6, in the embodiment of the present invention, an included angle α 1 is formed between the blade 22 and the blade back 21, where α 1 is in a range of 15 ° to 45 °; an included angle beta 1 is formed between the reinforcing section 30 and the knife back 21, and the range of the beta 1 is 5-20 degrees.

Through the arrangement, the blade 22 and the blade back 21 form an included angle, and the blade edge 25 is intersected and formed at the position of the top of the ophthalmic surgical cutter head 20, so that the ophthalmic surgical cutter head 20 is relatively sharp, and a doctor can easily puncture eye tissues during operation; the angle between the reinforcing section 30 and the blade back 21 is such that the first edge 221 and the second edge 31 form a larger angle of the blade tip 25 at the top of the ophthalmic surgical blade 20, and the blade tip 25 has sufficient strength to reduce the risk of the blade tip 25 falling off during operation.

In addition, since the angle α 2 of the blade edge 25 is α 1+ β 1, the blade edge 25 has a reasonable angle by defining the angles of the included angles α 1 and β 1, thereby ensuring that the blade edge 25 has sufficient strength and reducing the risk of the blade edge 25 falling.

Preferably, in order to further ensure the strength of the knife tip 25, ensure the operation safety, and avoid the risk of dropping and breaking the knife tip 25 during the use process, the angle of the knife tip 25 needs to be controlled to 35 ° < α 2<50 °, so that the included angle α 1 may be set to be in the range of 30 ° to 45 °, and β 1 is set to 5 °.

In the embodiment of the present invention, as shown in fig. 7 and 8, the keratotomy includes two reinforcing sections 30, and the two reinforcing sections 30 are symmetrically arranged with respect to the central axis of the blade back 21.

In the technical scheme, the strength of the tool nose 25 is further enhanced by arranging the two reinforcing sections 30, and the risk that the tool nose 25 falls off is reduced; specifically, the two reinforcing sections 30 are arranged symmetrically relative to the central axis of the knife back 21, so that the knife tip 25 can be uniformly stressed in the process of surgical operation, and a doctor can conveniently and stably operate.

As shown in fig. 5-7, in an embodiment of the present invention, cutting edge 22 includes two facets 222, the intersection of the two facets 222 forming a first edge 221, one facet 222 connecting to first flank 23 and the other facet 222 connecting to second flank 24.

With the above arrangement, the two edge faces 222 are used to connect the first edge 221 with the first side face 23 and the second side face 24, thereby achieving a smooth transition from the first edge 221 to the first side face 23 and the second side face 24; at the same time, facet 222 is provided so that blade 22 has a sharper first edge 221.

In the embodiment of the present invention, the back 21 is provided with a third edge connected to the second edge 31.

Through the setting, the tool bit 20 for ophthalmic surgery has the cutting edge of great length for ophthalmic surgery is sharper with tool bit 20, has better puncture effect, simultaneously, can avoid causing further injury to patient's eye tissue like this at the operation in-process, thereby can reduce patient postoperative complication.

In the embodiment of the utility model, in order to ensure that the corneal incision knife has enough strength and avoid loosening and falling off in the use process, the ophthalmic surgery knife head 20 is fixedly connected with the knife handle through the connecting part 10; preferably, the ophthalmic surgical blade 20 is fixedly connected to the handle via the connecting portion 10 by glue. Optionally, the tool holder is a wood tool holder or a plastic tool holder.

Of course, in other alternative embodiments, the ophthalmic surgical blade 20, the connecting portion 10 and the handle may be integrally formed as desired.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the first edge is arranged on the cutting edge, so that the cutter head is relatively sharp, and the cutter head is ensured to have a certain puncture effect; the knife back is provided with the reinforcing section, the angle range of the included angle between the knife back and the knife edge and the included angle between the reinforcing section and the knife back are limited, and the knife edge and the knife back form a knife tip with a larger angle at the top of the knife head, so that the knife tip has enough strength, the risk that the knife tip falls off in the operation process can be reduced, and the safety of the operation is improved; simultaneously, set up the second sword limit on strengthening the section, make the tool bit have two sword limits, sharper, have better puncture effect to make the requirement of ophthalmic surgery to the knife tip intensity of scalpel and puncture effect is satisfied simultaneously with the sword to ophthalmic surgery.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An ophthalmic-scalpel head (20) comprising:

the cutting edge (22), the cutting edge (22) comprises a cutting surface (222), and a first cutting edge (221) is arranged on the cutting surface (222);

a knife back (21), wherein a reinforcing section (30) is arranged at the position, close to the top of the ophthalmic scalpel bit (20), of the knife back (21), and the reinforcing section (30) is connected with the knife back (21) and the knife edge (22);

the reinforcing section (30) is provided with a second edge (31), and the first edge (221) and the second edge (31) are intersected to form a knife tip (25).

2. The ophthalmic scalpel bit of claim 1, wherein the reinforcing segment (30) has a straight or curved outer contour.

3. The ophthalmic scalpel bit of claim 1, wherein the blade (22) and the back (21) form an angle α 1 therebetween, and the angle α 1 is in the range of 15 ° to 45 °.

4. The ophthalmic scalpel bit of claim 3, wherein the included angle α 1 is in the range of 30 ° to 45 °.

5. The ophthalmic scalpel bit of claim 1, wherein the reinforcing section (30) and the back (21) form an included angle β 1 therebetween, and the included angle β 1 ranges from 5 ° to 20 °.

6. An ophthalmic scalpel head as claimed in any one of claims 1 to 5, wherein the ophthalmic scalpel head (20) comprises two of the reinforcing segments (30), the two reinforcing segments (30) being symmetrically arranged with respect to a central axis of the blade back (21).

7. An ophthalmic scalpel head according to any one of claims 1 to 5, wherein the cutting edge (22) comprises two of the facets (222), the line of intersection of the two facets (222) forming the first edge (221).

8. An ophthalmic scalpel head according to any one of claims 1 to 5, wherein the reinforcing section (30) comprises two reinforcing section facets formed by inclined surfaces, the intersection line of the two reinforcing section facets forming the second edge (31).

9. An ophthalmic scalpel head as claimed in any one of claims 1 to 5, wherein at least a portion of the spine (21) adjacent the reinforcing section (30) is provided with a third edge connected to the second edge (31).

10. An ophthalmic scalpel, comprising the ophthalmic scalpel head (20) according to any one of claims 1 to 8 and a handle connected to the ophthalmic scalpel head (20).