Adjustable rib cortical bone planing knife

Abstract

The utility model relates to an adjustable rib cortical bone planing knife which comprises a knife head and a knife bar, the knife head is in a sheet shape, a square blade hole is formed in the middle of the knife head, the hole wall of the front side of the blade hole is inclined to form a cutting edge with the lower surface of the knife head, the rear portion of the knife head is connected with the knife bar, the knife head is assembled on the knife bar in a rotating mode through a rotating shaft, and the knife bar is connected with the knife head. And a positioning structure is arranged between the tool bit and the tool bar. The tool bit and the tool bar are rotationally assembled, and the positioning structure is arranged between the tool bit and the tool bar, so that the angle adjustment between the tool bit and the tool bar can be realized, the purpose that the angle between the blade part and the tool bar can be randomly selected can be realized, a plurality of tool bits and one tool bit do not need to be prepared, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cortical bone planing cutter, especially to an adjustable rib cortical bone planing cutter, and belongs to the cosmetic industry. BACKGROUND

[0002] Rhinoplasty is a common cosmetic surgery, which makes the nose high and straight through filling with filling material to achieve the purpose of beautifying. The existing rhinoplasty materials are various, and the self-cortical bone filling is welcomed to a certain extent because it uses self-tissue and does not cause rejection reaction. Cortical bone planing cutter is needed to take cortical bone, and the existing cortical bone planing cutter has a cutter head and a cutter rod as shown in the drawings. Figure 1 The cutter head is sheet-shaped, a square blade hole is formed in the middle part of the cutter head, the front hole wall of the blade hole is inclined to form a cutting edge with the lower surface of the cutter head, the rear part of the cutter head is connected with the cutter rod, a connecting head is fixed on the rear part of the cutter head, the connecting head is cylindrical and has a bend, and the whole is angular. A part of the connecting head is fixed with the cutter head, and the other part of the connecting head is inclined upward and fixedly inserted into the fixed hole formed on the upper end face of the cutter rod. The angle between the cutter head and the cutter rod of this cortical bone planing cutter is fixed and cannot be adjusted. According to the thickness of the bone to be taken, medical staff will replace different cutter heads. The angles of the bends of the connecting heads of different cutter heads are different, so that the angle between the blade part and the cutter rod is adjusted. The adjustment is inconvenient, the adjustment angle cannot be arbitrarily selected, and a plurality of cutter heads need to be prepared, which is high in cost. CONTENT

[0003] The utility model aims at providing an adjustable rib cortical bone planing cutter to solve the problem that the adjustment angle cannot be arbitrarily selected by replacing the cutter head to adjust the angle between the blade part and the cutter rod in the prior art, a plurality of cutter heads need to be prepared, and the cost is high.

[0004] In order to solve the above problems, the adjustable rib cortical bone planing cutter adopts the following technical scheme: an adjustable rib cortical bone planing cutter, comprising a cutter head and a cutter rod, the cutter head is sheet-shaped, a square blade hole is formed in the middle part of the cutter head, the front hole wall of the blade hole is inclined to form a cutting edge with the lower surface of the cutter head, the rear part of the cutter head is connected with the cutter rod, the cutter head is rotatably assembled on the cutter rod through a rotating shaft, and a positioning structure is arranged between the cutter head and the cutter rod.

[0005] A visible catheter is fixed on the cutter rod and extends to the cutting edge of the cutter head.

[0006] A U-shaped groove is formed in the end face of the cutter rod and the cutter head, a connecting head is fixed on the cutter head and extends into the U-shaped groove, and the rotating shaft passes through the groove wall of the U-shaped groove and the connecting head to realize the rotating assembly between the cutter head and the cutter rod.

[0007] The cross section of the connecting head is square.

[0008] The positioning structure is a set screw, which is screwed on one groove wall of the U-shaped groove, and the inner end of the set screw is pressed against the connecting head.

[0009] The connecting head is an angular head with a bend, one part of the connecting head is fixed with the blade head, and the other part of the connecting head is inclined upward and assembled with the blade rod.

[0010] The blade head is provided with a pointer, and the blade rod is provided with an angle scale matched with the pointer.

[0011] The blade head and the blade rod are rotationally assembled, and the positioning structure is arranged between the blade head and the blade rod, so that the angle adjustment between the blade head and the blade rod can be realized, the angle between the blade part and the blade rod can be arbitrarily selected, and a plurality of blade heads are not required, only one blade head is required, and the cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments:

[0013] Figure 1 It is a cortical bone planing cutter in the prior art;

[0014] Figure 2 It is a three-dimensional structure schematic view of one direction of the embodiment of the present application;

[0015] Figure 3 It is a three-dimensional structure schematic view of another direction of the embodiment of the present application;

[0016] Figure 4 It is Figure 2 It is a local enlarged view of A in FIG. 4. DETAILED DESCRIPTION

[0017] In order to make the technical purpose, technical scheme and beneficial effects of the present application more clear, the technical scheme of the present application will be further described below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application, that is, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0018] The specific embodiments of the adjustable rib cortical bone planing cutter related by the present application are in Figures 2-4The head 1 is a sheet, a square blade hole 2 is formed in the middle of the head 1, the front hole wall of the blade hole 2 is inclined to form a cutting edge with the lower surface 3 of the head 1, and the above is the prior art. A connecting head 4 is fixedly arranged at the rear of the head 1, the cross section of the connecting head 4 is square, specifically rectangular in the embodiment, the connecting head 4 has a bent angular head, a part of the connecting head 4 is fixed with the head 1, and the other part of the connecting head 4 is inclined upward. The direction of the head 1 is defined as the head lying. A U-shaped groove 6 is formed inwardly on one end surface of a shank 5, the upward inclined part of the connecting head 4 extends into the U-shaped groove 6, and a rotating shaft 11 passes through the groove wall of the U-shaped groove 6 and the connecting head 4 to realize the rotating assembly between the head 1 and the shank 5.

[0019] A positioning structure is arranged between the head 1 and the shank 5, which is a tight screw 7, the tight screw 7 is threadedly arranged on one groove wall of the U-shaped groove 6, and the inner end of the tight screw 7 is pressed against the connecting head 4.

[0020] A pointer 8 is formed on the connecting head 4 of the head 1, and an angle scale 9 matched with the pointer 8 is formed on the outer wall of the U-shaped groove 6 of the shank 5.

[0021] A visible guide pipe 10 is fixed on the shank 5, the front end of the visible guide pipe 10 extends to the cutting edge of the head, that is, the visible guide pipe 10 is below the shank 5 and can illuminate the position of the cutting edge.

[0022] The positioning structure in the above embodiment is a tight screw, and in other embodiments, it can also be a pin and a pin hole.

[0023] The head and the shank in the above embodiment are assembled by a specific structure, and in other embodiments, all rotating assembly structures in the prior art can be used for assembly.

[0024] The cross section of the connecting head in the above embodiment is rectangular, and in other embodiments, it can also be square or even circular.

[0025] The connecting head in the above embodiment is an angular head with a bend, and in other embodiments, it can also be straight.

[0026] The head in the above embodiment is provided with a pointer, and the shank is provided with an angle scale matched with the pointer, and in other embodiments, the pointer and the angle scale can also not be arranged, and adjustment can be made by experience.

[0027] Finally, it should be pointed out that the above embodiments are only used for illustration and do not limit the technical scheme of the utility model, any equivalent replacement, modification or partial replacement of the utility model without departing from the spirit and scope of the utility model should be covered in the protection scope of the utility model claim.

Claims

1. An adjustable rib cortical planing cutter comprising a cutter head and a cutter shaft, said cutter head being a plate shape, a square blade hole being formed in the middle portion of the cutter head, the front hole wall of the blade hole being inclined to form a cutting edge with the lower surface of the cutter head, and the rear portion of the cutter head being connected to the cutter shaft, characterized in that, The cutter head is assembled on the cutter bar through a rotating shaft, and a positioning structure is arranged between the cutter head and the cutter bar.

2. The adjustable rib cortical planer of claim 1, wherein, The cutter bar is fixed with a visible guide pipe of which a front end extends to the cutting edge of the cutter head.

3. The adjustable rib cortical planer of claim 1 or 2, wherein, A U-shaped groove is formed in an end face of the cutter bar and the cutter head is assembled on the cutter bar, a connecting head is fixed on the cutter head and extends into the U-shaped groove, and the rotating shaft passes through the groove wall of the U-shaped groove and the connecting head to realize the rotating assembly of the cutter head and the cutter bar.

4. The adjustable rib cortical planer of claim 3, wherein, The cross section of the connecting head is square.

5. The adjustable rib cortical planer of claim 4, wherein, The positioning structure is a tight screw which is screwed on one groove wall of the U-shaped groove and whose inner end head is pressed against the connecting head.

6. The adjustable rib cortical planer of claim 5, wherein, The connecting head is an angular head with one bending, one part of the connecting head is fixed with the cutter head, and the other part of the connecting head is inclined upward and assembled with the cutter bar.

7. The adjustable rib cortical planer of claim 1, wherein, The cutter head is provided with a pointer, and the cutter bar is provided with an angle scale matched with the pointer.

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