CN211382159U - Tool bit and tool of tool - Google Patents

Abstract

The utility model provides a tool bit and cutter of cutter. The tool bit includes the base member, and the relative both sides of base member all is equipped with the flank, and the first end of two flanks is close to each other and is connected the formation link, and the second end of two flanks sets up relatively, along the direction of keeping away from the link, and the outside contour line of each flank all includes the arc line section, the slash section and the straightway that connect gradually. The technical scheme of the utility model can find the position of waiting to cut easily and can avoid causing further injury to patient's eye tissue again.

Description

Tool bit and tool of tool

Technical Field

The utility model relates to a cutter field particularly, relates to a tool bit and cutter of cutter.

Background

In the field of scalpels, a doctor uses a scalpel to perform scleral incision on a patient, and when the scalpel is used for incision, the maximum incision size of an eye tissue to be incised is determined by the width dimension (referred to as "width") of the widest part of the outer contour line of the scalpel head, namely the width of the scalpel head and the size of the maximum incision of the incised part.

To the best of the inventor's knowledge, there are two types of scalpel heads, one having an outside contour of the blade surface consisting of a curved segment and a straight segment, and the other having an outside contour of the blade surface consisting of a curved segment and a diagonal segment. Wherein, under the same circumstances of sword width, the width size of the arc line section of first kind tool bit is bigger than normal, when leading to operator cutting patient's eye tissue, is difficult to find the cutting position accurately to the use degree of difficulty of scalpel has been increased. In the second type of tool bit, the width of the end of the outer contour line of the cutting edge surface is the width of the widest part of the outer contour line, so that when the tool bit with the outer contour line is used for cutting a part to be cut, the size of the notch is ensured to be equal to the width of the knife (namely, the designed size of the notch) only when the cutting edge surface completely penetrates into the part to be cut. When the cutting edge face is completely punctured into the to-be-cut part, the cutting edge face finishes cutting the to-be-cut part, at the moment, the cutting edge face is completely punctured into the to-be-cut part, an operator cannot observe the specific position of the cutting edge face, and when the cutter head is pulled out, the eye tissue of a patient is easily further injured, so that the risk of generating complications after the operation of the patient is increased.

In the above, it is desirable to provide a cutting head which can easily find the position to be cut and avoid further damage to the eye tissue of the patient.

Disclosure of Invention

A primary object of the present invention is to provide a cutter head and a cutter thereof, wherein the cutter head can easily find the position to be cut and avoid further injury to the patient.

In order to realize the above-mentioned purpose, according to the utility model discloses an aspect provides a tool bit of cutter, and the tool bit includes the base member, and the relative both sides of base member all are equipped with the faceted pebble, and the first end of two faceted pebbles is close to each other and is connected the formation link, and the second end of two faceted pebbles sets up relatively, along the direction of keeping away from the link, and the outside outline line of each faceted pebble all includes the arc segment, the slash segment and the straightway that connect gradually.

Further, the tool tip comprises two straight line segments, which are symmetrically arranged with respect to the center line L1 of the base body.

Further, the tool bit comprises two straight line segments with a vertical distance d1 between the two straight line segments, wherein the vertical distance d1 satisfies the following relation: d1 is more than or equal to 2mm and less than or equal to 2.5 mm.

Further, the center of the circle of the arc segment is located on the central line L1 of the base body, and the diameter d2 of the circle of the arc segment satisfies the following relation: d2 is more than or equal to d1/3 and less than d 1.

Further, the length L2 of the straight line segment satisfies the following relationship: l2 is more than or equal to 1.5mm and less than or equal to 2 mm.

Further, the distance between the oblique line section and the central line L1 of the base body is gradually increased along the direction away from the connecting end; alternatively, the diagonal line segment has an angle α with the center line L1 of the base, where the angle α is equal to or greater than 8 ° and equal to or less than 15 °.

Further, the tool tip includes two diagonal segments, which are symmetrically disposed with respect to the center line L1 of the base body.

Further, the outer contour further includes an arcuate transition section disposed between the diagonal segment and the straight segment.

Further, the arc transition section is an arc tangent to the oblique line section and the straight line section.

According to the utility model discloses an on the other hand provides a cutter, including handle of a knife and the tool bit of being connected with the handle of a knife, the tool bit is foretell tool bit.

Further, the cutter still includes connecting portion, and the one end and the handle of a knife of connecting portion are connected, and the other end of connecting portion is connected with the base member of tool bit.

Further, the cutter also comprises a bulge arranged on the cutter handle, and the bulge is arranged at one end of the cutter handle close to the cutter head.

Further, an included angle β is formed between the cutter head and the connecting portion, wherein the included angle β is greater than or equal to 40 ° and less than or equal to 45 °.

By applying the technical scheme of the utility model, the outer side contour lines of the two blade surfaces of the knife head comprise the oblique line segment and the arc line segment, so that under the condition of the same knife width, the two arc line segments are connected to form a positioning arc line segment, the arc where the positioning arc line segment is positioned is smaller, an operator can find the cutting position more easily, the use difficulty of the scalpel is reduced, and the operation is facilitated; further, because the straightway has been add to the outside outline line, when the tool bit punctured the widest department of outside outline line, can guarantee that the straightway part of outside outline line exposes by the cutting department, like this, after using the widest position of tool bit, can avoid causing further injury to patient's eye tissue, and then reduce the degree of difficulty of operation, reduce patient postoperative complication.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention. In the drawings:

fig. 1 shows a schematic structural view of an embodiment of a tool according to the present invention;

FIG. 2 shows a schematic view of the structure of the cutting head of the tool of FIG. 1; and

fig. 3 shows a schematic cross-sectional view in the width direction of the cutting head of the tool in fig. 1.

Wherein the figures include the following reference numerals:

10. a cutter head; 11. a substrate; 12. an outer contour line; 121. an arc segment; 122. a diagonal segment; 123. a straight line segment; 124. an arc transition section; 13. a blade face; 20. a connecting portion; 30. a knife handle; 31. and (4) protruding.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

As shown in fig. 2 and 3, the utility model discloses a tool bit 10 of embodiment includes base member 11, and the relative both sides of base member 11 all are equipped with the facet 13, and the first end of two facets 13 is close to each other and is connected and form the link, and the second end of two facets 13 sets up relatively, and along the direction of keeping away from the link, the outside contour line 12 of each facet 13 all includes the segmental arc 121, slash section 122 and the straightway 123 that connect gradually.

According to the arrangement, the outer contour lines 12 of the two edge surfaces 13 of the tool bit 10 respectively comprise the inclined line segment 122 and the arc line segment 121, so that under the condition that the tool width is the same, the two arc line segments 121 are connected to form a positioning arc line segment, the arc of the positioning arc line segment is smaller, an operator can find the cutting position more easily, the use difficulty of the scalpel is reduced, and the operation is facilitated; further, because the straightway 123 has been add to outside outline line 12, when the widest department of outside outline line 12 was punctured to tool bit 10, can guarantee that the straightway 123 part of outside outline line 12 exposes by the cutting department, like this, after using the widest position of tool bit 10, can avoid causing further injury to patient's eye tissue, and then reduce the degree of difficulty of operation, reduce patient postoperative complication.

To the best of the inventor's knowledge, there are two types of scalpel heads, one having an outer contour comprised of an arc segment and a straight segment, and the other having an outer contour comprised of an arc segment and a diagonal segment. Wherein, the circular arc size at the arc segment place of first kind of tool bit is bigger than normal, leads to the doctor when cutting eye tissue, is difficult to the alignment position, can bring certain degree of difficulty to doctor's operation like this. The width of the second cutter head is arranged at the end of the outer contour line, so that when a doctor cuts eye tissues, the end of the outer contour line causes further damage to the eye tissues of a patient. The utility model provides an outside contour line 12 of tool bit 10 comprises arc segment 121, diagonal segment 122 and straightway 123, can find the position of waiting to cut easily and can avoid causing further injury to the patient again.

Preferably, as shown in fig. 3, in the embodiment of the present invention, the blade face 13 is an inclined surface. According to the arrangement, the blade face 13 is sharp and has certain mechanical strength, so that the blade head 10 can prevent the blade face 13 from being damaged due to insufficient mechanical strength of the blade face 13 when cutting.

As shown in fig. 2, in the embodiment of the present invention, the tool tip 10 includes two straight segments 123, and the two straight segments 123 are symmetrically disposed with respect to the center line L1 of the base 11.

In the above-mentioned setting, when the operator utilizes the widest department of outside contour line 12 to cut, the dynamics of cutting does not change greatly to make the operator can keep good cutting and feel, and then the precision when guaranteeing the cutting. When the cutter head 10 penetrates the widest part of the outer side contour line, the two straight line sections 123 can ensure that the straight line sections 123 of the outer side contour line 12 are partially exposed out of the cutting position, so that the situation that the outer side contour line 12 is completely penetrated into the cutting position and the stopping position of the outer side contour line 12 easily injures the cutting position is avoided, and the difficulty of an operator in performing an operation is further reduced.

Specifically, as shown in fig. 2, in the embodiment of the present invention, there is a vertical distance d1 between two straight line segments 123, wherein the vertical distance d1 satisfies the following relationship: d1 is more than or equal to 2mm and less than or equal to 2.5 mm.

In the above arrangement, the vertical distance d1 is the width dimension (i.e., the knife width) of the widest part of the outer contour line, and the range of the vertical distance d1 is limited to limit the knife width, and thus the size range of the cut by the knife.

It should be noted that, the size range of the vertical distance d1 may be set according to the size of the cut to be cut at the cutting position. Because the knife in the embodiment of the present invention is to cut the sclera of the human eye, the incision size of the sclera of the human eye is generally between 2mm and 2.5mm, so the perpendicular distance d1 is set between 2mm and 2.5 mm. Of course, in alternative embodiments not shown in the drawings, other dimensions of blade width may be provided as practical.

Specifically, as shown in fig. 2, in the embodiment of the present invention, the length L2 of the straight line segment 123 satisfies the following relationship: l2 is more than or equal to 1.5mm and less than or equal to 2 mm. According to the above arrangement, the length of the cutter head 10 can be controlled, thereby reducing the manufacturing cost of the cutter head 10.

As shown in fig. 2, in the embodiment of the present invention, the center of the circle where the arc segment 121 is located on the center line L1 of the base 11, and the diameter d2 of the circle where the arc segment 121 is located satisfies the following relationship: d2 is more than or equal to d1/3 and less than d 1.

According to the above arrangement, the width of the positioning arc segment formed by connecting the two arc segments 121 is smaller than the width of the widest part of the outer contour line, so that the arc size of the cutter head 10 is not large, and thus the cutter head 10 has an accurate cutting positioning function, and an operator can easily find the position to be cut.

Specifically, as shown in fig. 2, in the embodiment of the present invention, the positioning arc segment is a semicircle, and the diameter d2 of the semicircle satisfies the following relationship: d2 is more than or equal to d1/3 and less than d 1. According to the above arrangement, the cutting positioning function of the cutter head 10 is better, so that the operator can more easily find the position to be cut. Meanwhile, the cut made by the outer contour line with the semicircle is smoother and smoother, thereby improving the cutting quality.

Of course, in an alternative embodiment not shown in the drawings, the positioning arc segment formed by connecting the two arc segments 121 can be set to 1/4 circles or 1/8 other circles smaller than a semicircle according to practical situations.

Of course, in an alternative embodiment not shown in the drawings, the center of the circle on which the arc segment 121 is located may not be located on the center line L1 of the substrate 11.

Preferably, the positioning arc segment is a semicircle, and the diameter d2 of the circle where the semicircle is located is equal to d1/3, so that the width dimension of the positioning arc segment of the cutter head 10 is smaller, thereby enabling the operator to find the cutting position more easily. Meanwhile, the cut made by the outer contour line with the semicircle is smoother and smoother, thereby improving the cutting quality.

As shown in fig. 2, in the embodiment of the present invention, the distance between the oblique line section 122 and the center line L1 of the base 11 gradually increases in the direction away from the connection end.

According to the arrangement, the oblique line segment 122 can realize the transitional connection between the arc line segment 121 and the straight line segment 123, so that the condition that the cut part is injured due to the fact that the straight line blade face perpendicular to the straight line segment 123 is formed at the connecting position of the arc line segment 121 and the straight line segment 123 can be avoided, the difficulty of an operator in surgery is reduced, and the success rate of the surgery is improved.

Specifically, as shown in fig. 2, the tool tip 10 includes two diagonal segments 122, and the two diagonal segments 122 are symmetrically disposed with respect to the center line L1 of the base body 11. The diagonal segment 122 forms an angle α with the center line L1 of the base 11, where the angle α is equal to or greater than 8 ° and equal to or less than 15 °.

According to the arrangement, the oblique line segment 122 can better realize the transitional connection between the arc line segment 121 and the straight line segment 123, so that the resistance of the cutter head 10 in the process of puncturing the to-be-cut part is reduced, the difficulty of an operator in performing an operation is further reduced, and the success rate of the operation is improved.

As shown in fig. 2, in the embodiment of the present invention, the outer contour 12 further includes an arc transition section 124 disposed between the diagonal section 122 and the straight section 123.

According to the arrangement, the arc-shaped transition section 124 makes the outer contour line at the joint of the oblique line section 122 and the straight line section 123 smooth, so that the resistance of the widest part of the outer contour line 12 to puncture the cut part can be reduced, and the widest part of the outer contour line 12 can be ensured to cut a smooth and tidy cut.

Specifically, as shown in fig. 2, the arc transition section 124 is an arc that is tangent to the diagonal section 122 and the straight section 123.

Preferably, the diameter of the circle on which the circular arc is located is 40 mm. Thus, the outer contour at the junction of the diagonal line segment 122 and the straight line segment 123 is made smoother, and the resistance to penetration of the widest part of the outer contour 12 into the cut site is further reduced, thereby ensuring a smoother and more orderly cut.

As shown in fig. 1, the embodiment of the present invention further provides a cutting tool, the cutting tool includes the above-mentioned tool bit 10, the tool shank 30 and the connecting portion 20, one end of the connecting portion 20 is connected to the tool shank 30, and the other end of the connecting portion 20 is connected to the base 11 of the tool bit 10. In the above arrangement, the knife handle 30 can be conveniently held by an operator, so that the knife head 10 can be better controlled to perform an operation, and the success rate of the operation is further improved.

As shown in fig. 1, in the embodiment of the present invention, the cutting tool further includes a protrusion 31 disposed on the tool shank 30, and the protrusion 31 is disposed at an end of the tool shank 30 close to the tool bit 10. In the above arrangement, the protrusion 31 is used to be held by the bending tool when the connecting portion 20 of the tool is bent. Therefore, the situation that the outer surface of the tool holder 30 is scratched or collapsed due to the fact that the bending tool directly clamps the tool holder 30 can be prevented, and therefore the attractive appearance of the tool holder 30 is ensured.

As shown in fig. 1, in the embodiment of the present invention, an included angle β is formed between the tool bit 10 and the connecting portion 20, wherein the included angle β is greater than or equal to 40 ° and less than or equal to 45 °.

According to the setting, an operator can select the most appropriate included angle beta according to the observation habit in the operation, so that the cutter can be ensured to be in the best observation position when the operator performs the operation, the cutting accuracy is improved, and the success rate of the operation is further improved.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the outer side contour lines of the two edge surfaces of the cutter head comprise an inclined line segment and an arc line segment, so that the two arc line segments are connected to form a positioning arc line segment under the condition of the same cutter width, the arc where the positioning arc line segment is located is smaller, an operator can find the cutting position more easily, the use difficulty of the scalpel is reduced, and the operation is facilitated; further, because the straightway has been add to the outside outline line, when the tool bit punctured the widest department of outside outline line, can guarantee that the straightway part of outside outline line exposes by the cutting department, like this, after using the widest position of tool bit, can avoid causing further injury to patient's eye tissue, and then reduce the degree of difficulty of operation, reduce patient postoperative complication.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

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 (13)

1. The tool bit of the cutter is characterized in that the tool bit (10) comprises a base body (11), two opposite edges of the base body (11) are respectively provided with a cutting surface (13), first ends of the two cutting surfaces (13) are close to each other and connected to form a connecting end, second ends of the two cutting surfaces (13) are oppositely arranged, and outer side contour lines (12) of the cutting surfaces (13) respectively comprise an arc line segment (121), an oblique line segment (122) and a straight line segment (123) which are sequentially connected in the direction away from the connecting end.

2. The cutting head according to claim 1, characterized in that the cutting head (10) comprises two straight segments (123), the two straight segments (123) being symmetrically arranged with respect to a centre line L1 of the basic body (11).

3. The cutting head according to claim 1, wherein the cutting head (10) comprises two straight segments (123), the two straight segments (123) having a perpendicular distance d1 therebetween, wherein the perpendicular distance d1 satisfies the following relationship: d1 is more than or equal to 2mm and less than or equal to 2.5 mm.

4. Cutting head according to claim 3, characterized in that the arc segment (121) is located in a circle with its center located on the centre line L1 of the basic body (11), the diameter d2 of the circle of the arc segment (121) satisfying the following relation: d2 is more than or equal to d1/3 and less than d 1.

5. The cutting head according to any one of claims 1 to 4, wherein the length L2 of the straight line segment (123) satisfies the following relationship: l2 is more than or equal to 1.5mm and less than or equal to 2 mm.

6. The cutter head according to any one of claims 1 to 4, wherein the distance between the oblique line segment (122) and a center line L1 of the base body (11) is gradually increased in a direction away from the connecting end; or an included angle alpha is formed between the oblique line segment (122) and the central line L1 of the base body (11), wherein the included angle alpha is larger than or equal to 8 degrees and smaller than or equal to 15 degrees.

7. Cutter head according to any one of claims 1 to 4, wherein the cutter head (10) comprises two of the oblique line segments (122), the two oblique line segments (122) being symmetrically arranged with respect to a centre line L1 of the basic body (11).

8. The cutting head according to any one of claims 1 to 4, wherein the outer contour (12) further comprises an arcuate transition section (124) disposed between the oblique segment (122) and the straight segment (123).

9. The cutter head according to claim 8, wherein the arcuate transition (124) is an arc of a circle tangent to the oblique segment (122) and the straight segment (123).

10. A tool comprising a shank (30) and a cutting head (10) connected to the shank (30), characterized in that the cutting head (10) is a cutting head according to any one of claims 1 to 9.

11. Tool according to claim 10, characterized in that the tool further comprises a connecting part (20), one end of the connecting part (20) being connected to the shank (30) and the other end of the connecting part (20) being connected to the basic body (11) of the tool head (10).

12. Tool according to claim 11, characterized in that the tool further comprises a protrusion (31) provided on the shank (30), which protrusion (31) is provided at an end of the shank (30) near the tool head (10).

13. Tool according to claim 12, characterized in that the cutting head (10) and the connecting portion (20) have an angle β therebetween, wherein the angle β is greater than or equal to 40 ° and less than or equal to 45 °.

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