NOVEL HARD TISSUE SLICING KNIFE

Abstract

The invention provides a novel hard tissue slicing knife, comprising a knife back portion and a knife edge portion which are manufactured as a single piece; wherein the knife back portion has a cross section of an isosceles trapezoid, the knife edge portion has a cross section of an isosceles triangle; an end of the knife back portion which is away from the knife edge portion, has a thickness in a range of 4 mm to 15 mm; a junction between the knife back portion and the knife edge portion has a thickness in a range of 0.1 mm to 0.8 mm; the knife hack portion has a vertical height in a range of 27 mm to 38 mm; two faces of the knife edge portion is at an angle in a range of 10 degrees to 40 degrees.

Claims

1. A novel hard tissue slicing knife, comprising a knife back portion (2) and a knife edge portion (1) which are manufactured as a single piece; wherein the knife back portion (2) has a cross section of an isosceles trapezoid, the knife edge portion (1) has a cross section of an isosceles triangle; an end of the knife back portion (2), which is away from the knife edge portion (1), has a thickness in a range of 4 mm to 15 mm; a junction between the knife back portion (2) and the knife edge portion has a thickness in a range of 0.1 mm to 0.8 mm; the knife back portion (2) has a vertical height in a range of 27 mm to 38 mm; two faces of the knife edge portion (1) is at an angle in a range of 10 degrees to 40 degrees; and a base angle of the isosceles triangle is in a range of 70 degrees to 85 degrees.

2. The hard tissue slicing knife of claim 1, wherein a lower base angle of the isosceles trapezoid is in a range of 70 degrees to 85 degrees and is greater than the angle of the base angle of the isosceles triangle.

3. The hard tissue slicing knife of claim 1, wherein the knife back portion (2) and the knife edge portion (1) each has a horizontal length in a range of 8 cm to 20 cm.

4. The hard tissue slicing knife of claim 1, wherein an end of the knife back portion , which is away from the knife edge portion (1), has a thickness in a range of 4 mm to 12 mm.

5. The hard tissue slicing knife of claim 1, wherein the knife edge portion (1) has a vertical height in a range of 1 mm to 3.5 mm.

6. The hard tissue slicing knife of claim 1, wherein both the knife back portion (2) and the knife edge portion (1) are made from white steel.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, together with the specification, illustrate exemplary embodiments of the present disclosure, and, together with the description, serve to explain the principles of the present invention.

[0017] FIG. 1 is a schematic view of a structure of a novel hard tissue slicing knife according to an embodiment of the present invention;

[0018] FIG. 2 is a side cross-sectional view of a novel hard tissue slicing knife according to an embodiment of the present invention;

[0019] FIG. 3 is an enlarged view of A in FIG. 2;

[0020] FIG. 4 is an enlarged view of B in FIG. 2;

[0021] in the accompanying drawings, 1-knife edge portion; 2-knife back portion.

DETAILED DESCRIPTION

[0022] The present invention provides a novel hard tissue slicing knife.

[0023] The technical solution of the present invention will now be described. more fully hereinafter with reference to the accompanying drawings, so as to better understand the present invention. However, it should not limit the scope of the invention.

[0024] As shown in FIGS. 1-4, the present invention provides a novel hard tissue slicing knife, comprising a knife back portion 2 and a knife edge portion 1 which are manufactured as a single piece; wherein the knife back portion 2 has a cross section of an isosceles trapezoid, the knife edge portion 1 has a cross section of an isosceles triangle; an end of the knife back portion 2, which is away from the knife edge portion 1, has a thickness in a range of 4 mm to 15 mm;

[0025] a junction between the knife back portion 2 and the knife edge portion 1, has a thickness in a range of 0.1 mm to 0.8 mm; preferably in a range of 0.2 mm to 0.6 mm.

[0026] the knife back portion 2 has a vertical height in a range of 27 mm to 38 mm;

[0027] two faces of the knife edge portion 1 is at an angle in a range of 10 degrees to 40 degrees; preferably in a range of 10 degrees to 30 degrees.

[0028] a base angle of the isosceles triangle is in a range of 70 degrees to 85 degrees; preferably in a range of 75 degrees to 85 degrees

[0029] A lower base angle of the isosceles trapezoid is in a range of 70 degrees to 85 degrees and is greater than the angle of the base angle of the isosceles triangle.

[0030] In a preferred embodiment of the present invention, the knife back portion 2 and the knife edge portion 1 each has a horizontal length in a range of 8 cm to 20 cm, preferably in a range of 12 cm to 18 cm.

[0031] In a preferred embodiment of the present invention, an end of the knife back portion 2, which is away from the knife edge portion 1, has a thickness in a range of 4 mm to 12 mm.

[0032] In a preferred embodiment of the present invention, the knife edge portion 1 has a vertical height in a range of 1 mm to 3.5 mm.

[0033] In a preferred embodiment of the present invention, both the knife back portion 2 and the knife edge portion 1 are made from white steel. Use of the white steel ensures the hardness of the slicing knife, and roughness is higher, so that the knife edge is not easy to crack.

[0034] For the novel hard tissue slicing knife provided in the present invention, the angle between two faces of the knife edge portion is reduced, so that tissue slices cut by the slicing knife have a thickness which is more precise, and the thickness is less than 5 μm or greater than 20 μm. Since the knife edge portion and the knife back portion are made from white steel, i.e., high-speed steel, hardness required for the slices are guaranteed, and the toughness of the slicing knife is relatively higher, which makes the knife edge not easy to crack in use; and the thickness and the width of the knife back portion and the knife edge portion are preset for slicing tissues in a more convenient way. The novel hard tissue slicing knife provided in the present invention is not easy to crack, so that costs for the replacement of the broken knife edges are reduced; in addition, the thickness of the tissue slices is more precise.

[0035] The above descriptions are only the preferred embodiments of the invention, not thus limiting the embodiments and scope of the invention. Those skilled in the art should be able to realize that the schemes obtained from the content of specification and drawings of the invention are within the scope of the invention.