WO2012149837A1

WO2012149837A1 - Piezosurgery tool bit

Info

Publication number: WO2012149837A1
Application number: PCT/CN2012/071952
Authority: WO
Inventors: 曹群; 刘庆明
Original assignee: 江苏水木天蓬科技有限公司
Priority date: 2011-05-03
Filing date: 2012-03-05
Publication date: 2012-11-08

Abstract

Disclosed is a piezosurgery tool bit comprising blades (11, 21, 31, 41, 51, 61, 71) and tool tips (12, 22, 32, 42, 52, 62, 72), wherein the noses of the tool (12, 22, 32, 42, 52, 62, 72) are located right in front of the blades (11, 21, 31, 41, 51, 61, 71) for directing all the energy of the piezosurgery tool into the tool tips (12, 22, 32, 42, 52, 62, 72). The piezosurgery tool bit can increase cutting speed, reduce operating time and accurately control the amount and shape of the cut bone.

Description

Description: An ultrasonic bone cutter head

Technical field

The invention relates to the technical field of medical instruments, and in particular to an ultrasonic bone cutter head. Background technique

In orthopedic surgery, the bone is often cut, ground, planed, scraped, or arbitrarily shaped using an ultrasonic osteotome. As shown in Figure 1, the current ultrasonic bone cutter head has multiple teeth, a wide tip portion, and the tip portion is not the effective main cutting portion.

The ultrasonic bone cutter head has the following problems: slow cutting speed, low efficiency, poor load capacity, waste of energy; easy breakage, low service life; complicated shape, high processing difficulty, and high production cost. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide an ultrasonic bone cutter head which can improve the cutting speed, reduce the operation time, and accurately control the amount and shape of the bone.

To this end, the present invention employs the following technical solutions:

An ultrasonic bone cutter head includes a blade and a tip positioned at a front end of the blade for concentrating all of the energy of the ultrasonic bone knife to the tip portion.

Further, the thickness of the cutting edge is greater than the thickness of the blade.

Further, the cutting edge is provided with a circular arc groove.

Alternatively, the tip is provided with a triangular portion.

Further, the utility model further comprises a blade body and a connecting thread. The blade body is connected to the blade at one end, and one end is connected with the connecting thread. The blade body has a thick cylinder at one end, a thin cylinder at one end, a circular arc transition in the middle, and a hex wrench position is provided, and the connecting thread is used for connecting Connected to an ultrasound transducer. Further, the center of the cutting edge is located on the longitudinal central axis of the cutting head, and the side between the center of the cutting edge and the two edges of the blade is a triangle, and the other side is a circular arc groove.

The angle between the end of the arcuate groove between the center of the tip and the edge of the blade and the horizontal line at the center of the tip is 15 to 75 degrees.

Preferably, the angle between the line connecting the two ends of the arcuate groove between the center of the blade edge and the edge of the blade and the horizontal line of the center of the tip is 30 to 60 degrees.

The angle between the triangular edge between the center of the tip and the edge of the blade and the horizontal line at the center of the tip is 0 to 75 degrees.

Preferably, the angle between the triangular edge between the center of the tip and the edge of the blade and the horizontal line of the center of the tip is 30 to 60 degrees.

Further, the center of the cutting edge is located on the longitudinal center axis of the cutting head, the center of the cutting edge is triangular with respect to both edges of the blade, and a circular arc-shaped groove is provided in the middle portion of the triangle.

The angle between the triangular edge between the center of the tip and the edge of the blade and the horizontal line at the center of the tip is 15 to 75 degrees.

Further, the center of the cutting edge is located on the longitudinal central axis of the cutting head, and the center of the cutting edge and the two edges of the blade are triangular near the center of the cutting edge, and the edge portion near the blade is a circular arc shaped groove.

The angle between the edge of the triangle near the center portion of the blade tip and the horizontal line of the center of the blade tip is 15 degrees to 75 degrees.

Preferably, the angle between the edge of the triangle near the center portion of the blade tip and the horizontal line of the center of the blade tip is 30 to 60 degrees.

Further, the center of the tip is located on the longitudinal center axis of the bit, the center of the tip is triangular with respect to both edges of the blade, and two arcuate grooves are provided in the middle portion of the triangle.

Between the triangle edge between the center of the tip and the edge of the blade and the horizontal line at the center of the tip The angle is between 15 and 75 degrees.

Further, the center of the tip is located on the longitudinal center axis of the tip, and the center of the tip and the two edges of the blade are arcuate grooves.

Further, the center of the tip is located on the longitudinal center axis of the tip, and the center of the tip is triangular with the edges of the blade.

The angle between the triangle edge between the center of the tip and the edge of the blade and the edge extension of the blade edge is 0 to 75 degrees.

Preferably, the angle between the triangular edge between the center of the tip and the edge of the blade and the edge of the blade edge is between 10 and 60 degrees.

Further, the two sides of the cutting edge are respectively on the same line as the two sides of the blade, and one side of the cutting edge is longer than the other side of the cutting edge.

There is a straight line between the end of the long edge of the tip and the end of the short side.

There is an arc between the end of the long edge of the tip and the end of the short side.

The angle between the end of the long edge of the tip and the end of the short edge of the tip and the long edge of the tip is

15 degrees to 90 degrees.

Preferably, the angle between the line connecting the end of the long side of the cutting edge and the end of the short side of the cutting edge and the long side of the cutting edge is 30 to 70 degrees. By adopting the technical scheme of the invention, the bone cutting efficiency is high, the speed is fast, the operation time is reduced, and the operation is reduced. The patient suffers, reduces the labor intensity of the doctor; The cutter head is exquisite and compact, can accurately control the cutting amount and shape of the bone, reduce the amount of bone loss during operation, accelerate the recovery time of the patient; have hemostatic coagulation effect during the bone cutting process, reduce Intraoperative blood loss; reduced processing difficulty and reduced production costs. DRAWINGS

1 is a schematic view showing the structure of an ultrasonic bone cutter head in the prior art.

2 is a schematic structural view of a single arc edge ultrasonic bone cutter head according to a first embodiment of the present invention. 3 is a schematic cross-sectional view of a single arc edge ultrasonic bone cutter head according to a first embodiment of the present invention. 4 is a partial enlarged view of a single arc edge ultrasonic bone cutter head according to a first embodiment of the present invention. FIG. 5 is a schematic structural view of a single arc edge ultrasonic bone cutter head according to a second embodiment of the present invention. Fig. 6 is a structural schematic view of a 戟-type blade ultrasonic bone cutter head according to a third embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view showing the 戟-type blade ultrasonic bone cutter head according to the third embodiment of the present invention.

Fig. 8 is a partial enlarged view of the 戟-blade ultrasonic bone cutter head according to the third embodiment of the present invention.

FIG. 9 is a schematic structural view of a 戟-type blade ultrasonic bone cutter head according to a fourth embodiment of the present invention.

Fig. 10 is a structural schematic view showing a triangular-blade ultrasonic bone cutter head according to a fifth embodiment of the present invention. Figure 11 is a schematic cross-sectional view of a triangular-blade ultrasonic bone cutter head according to a fifth embodiment of the present invention. Figure 12 is a partially enlarged view of a triangular-blade ultrasonic bone cutter head according to a fifth embodiment of the present invention. Figure 13 is a schematic view showing the structure of a triangular-blade ultrasonic bone cutter head according to a sixth embodiment of the present invention. Figure 14 is a schematic view showing the structure of a mountain-shaped blade ultrasonic bone cutter head according to a seventh embodiment of the present invention. Figure 15 is a schematic cross-sectional view of a mountain-shaped blade ultrasonic bone cutter head according to a seventh embodiment of the present invention. Figure 16 is a partial enlarged view of a mountain-shaped blade ultrasonic bone cutter head according to a seventh embodiment of the present invention. Figure 17 is a schematic view showing the structure of a mountain-shaped blade ultrasonic bone cutter head according to an eighth embodiment of the present invention. 18 is a schematic structural view of a double arc edge ultrasonic bone cutter head according to a ninth embodiment of the present invention. Figure 19 is a schematic cross-sectional view showing a double arc edge ultrasonic bone cutter head according to a ninth embodiment of the present invention. Figure 20 is a partially enlarged view of the double arc edge ultrasonic bone cutter head in the ninth embodiment of the present invention. 21 is a schematic structural view of a double-arc blade ultrasonic bone cutter head according to a tenth embodiment of the present invention. Figure 22 is a schematic view showing the structure of a large triangular blade ultrasonic bone cutter head according to an eleventh embodiment of the present invention.

Fig. 23 is a schematic side view showing the large triangular blade ultrasonic bone cutter head in the eleventh embodiment of the present invention.

Fig. 24 is a partially enlarged plan view showing the large triangular blade ultrasonic bone cutter head in the eleventh embodiment of the present invention.

Fig. 25 is a schematic view showing the structure of a large triangular blade ultrasonic bone cutter head according to a twelfth embodiment of the present invention.

Figure 26 is a schematic view showing the structure of a wedge-shaped ultrasonic bone cutter head according to a thirteenth embodiment of the present invention. Figure 27 is a schematic cross-sectional view of a wedge-shaped ultrasonic bone cutter head according to a thirteenth embodiment of the present invention. Figure 28 is a partially enlarged view of a wedge-shaped ultrasonic bone cutter head according to a thirteenth embodiment of the present invention. Figure 29 is a schematic side view of a wedge-shaped ultrasonic bone cutter head according to a fourteenth embodiment of the present invention. Figure 30 is a partial enlarged view of the wedge-shaped ultrasonic bone cutter head in the fourteenth embodiment of the present invention. Figure 31 is a schematic view showing the structure of a wedge-shaped ultrasonic bone cutter head according to a fifteenth embodiment of the present invention. detailed description

The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

The main idea of the technical solution of the present invention is that the shape of the ultrasonic bone cutter head is located on the central axis of the entire cutter head, so that the energy generated by the ultrasonic transducer is concentrated on the tip of the ultrasonic bone cutter head. Part of the (most effective working part), converging to a point, so that the tip of the cutter head has the strongest energy output to achieve the strongest working effect.

2 is a schematic structural view of a single arc edge ultrasonic bone cutter head according to a first embodiment of the present invention. 3 is a schematic cross-sectional view of a single arc edge ultrasonic bone cutter head according to a first embodiment of the present invention. As shown in Fig. 2 and Fig. 3, the single arc edge ultrasonic bone cutter head adopts a single main tooth tip asymmetric structure, including a blade 11, The tip 12, the connecting thread 13 and the blade body 14.

The tip of the blade is located at the front end of the blade and concentrates the entire energy of the ultrasonic bone knife to the tip end. The center of the tip is located on the longitudinal center axis of the tip, and the side between the center of the tip and the two edges of the blade is triangular, and the other side is a circular groove.

4 is a partial enlarged view of a single arc edge ultrasonic bone cutter head according to a first embodiment of the present invention. As shown in Fig. 4, the angle β between the line connecting the two ends of the arc-shaped groove between the center of the blade edge and the edge of the blade and the horizontal line of the center of the blade edge may be 15 to 75 degrees, and is usually 30 degrees. To 60 degrees.

The angle between the triangle edge between the center of the blade tip and the edge of the blade and the horizontal line of the center of the blade tip may be 0 to 75 degrees, and is usually 30 to 60 degrees. The angle β and the angle Θ can be combined arbitrarily. Match.

One end of the blade is connected to the blade, and one end is connected with the connecting thread. One end of the blade is a thick cylinder, one end is a thin cylinder, the middle is transitioned by a circular arc, and a normal hex wrench position is set, and the connecting thread is connected with the ultrasonic transducer. Connect the connecting thread at the end of the cutter head to a specific ultrasonic transducer and tighten with a corresponding wrench. Then connect the ultrasonic transducer to a specific ultrasonic host to operate.

FIG. 5 is a schematic structural view of a single arc edge ultrasonic bone cutter head according to a second embodiment of the present invention. As shown in FIG. 5, the structure of the single arc edge ultrasonic bone cutter head is basically the same as that of the single arc edge ultrasonic bone cutter head in the first embodiment, except that the thickness of the blade tip is larger than the thickness of the blade, the knife The transition between the tip and the blade is through a circular arc.

Thus, when used, the width of the cutting edge is larger than the thickness of the blade. During the operation, when the thicker bone is cut or the deep groove or the window cut is cut, the clamping phenomenon does not occur. In addition, the large thickness of the tool tip also increases the strength of the tool tip, which increases the service life of the tool tip.

Fig. 6 is a structural schematic view of a 戟-type blade ultrasonic bone cutter head according to a third embodiment of the present invention. Fig. 7 is a schematic cross-sectional view showing the 戟-type blade ultrasonic bone cutter head according to the third embodiment of the present invention. As shown in FIGS. 6 and 7, the 刃-type ultrasonic bone cutter head employs a single main-tooth tip structure including a blade 21, a tip 22, a connecting thread 23, and a blade 24. The tip of the blade is located at the front end of the blade and concentrates the entire energy of the ultrasonic bone knife to the tip end. The center of the tip is located on the longitudinal center axis of the tip, the center of the tip is triangular with the edges of the blade, and a circular groove is provided in the middle of the triangle.

Fig. 8 is a partial enlarged view of the 戟-blade ultrasonic bone cutter head according to the third embodiment of the present invention. As shown in Fig. 8, the angle β between the triangle edge between the center of the tip and one edge of the blade and the horizontal line at the center of the tip can be 15 to 75 degrees, and is usually 30 to 60 degrees.

The angle between the triangle edge between the center of the tip and the other edge of the blade and the horizontal line at the center of the tip can be 15 degrees to 75 degrees, usually 30 degrees to 60 degrees, the angle β and the angle Θ can be Any combination.

FIG. 9 is a schematic structural view of a 戟-type blade ultrasonic bone cutter head according to a fourth embodiment of the present invention. As shown in Fig. 9, the structure of the 刃-shaped ultrasonic bone cutter head is basically the same as that of the 戟-type ultrasonic bone cutter head in the third embodiment, except that the thickness of the cutting edge is larger than the thickness of the blade, the cutting edge and The arc transitions between the blades.

FIG. 10 is a schematic structural view of a triangular-blade ultrasonic bone cutter head according to a fifth embodiment of the present invention. Figure 11 is a schematic cross-sectional view of a triangular-blade ultrasonic bone cutter head according to a fifth embodiment of the present invention. As shown in Figures 10 and 11, the triangular blade ultrasonic bone cutter head employs a single main tooth tip structure including a blade 31, a tip 32, a connecting thread 33 and a blade 34.

The tip of the blade is located at the front end of the blade and concentrates the entire energy of the ultrasonic bone knife to the tip end. Knife The center of the tip is located on the longitudinal center axis of the cutter head, and the center of the tip and the edge of the blade are triangular near the center of the blade edge, and the edge portion near the blade is a circular arc groove.

Figure 12 is a partial enlarged view of a triangular-blade ultrasonic bone cutter head according to a fifth embodiment of the present invention. As shown in Fig. 12, the angle β between the edge of the triangle near the center of the blade and the horizontal line at the center of the tip is 15 to 75 degrees, and is usually 30 to 60 degrees. The angle between the edge of another triangle near the center of the tool tip and the horizontal line at the center of the tool tip is 15 degrees to 75 degrees, and is usually 30 degrees to 60 degrees. The angle β and the angle Θ can be combined in any combination.

Figure 13 is a schematic view showing the structure of a triangular-bladed ultrasonic bone cutter head according to a sixth embodiment of the present invention. As shown in FIG. 13, the structure of the triangular edge ultrasonic bone cutter head is basically the same as that of the triangular edge ultrasonic bone cutter head in the fifth embodiment, except that the thickness of the cutting edge is larger than the thickness of the blade, the tip and the blade. Transition through an arc.

Figure 14 is a schematic view showing the structure of a mountain-shaped blade ultrasonic bone cutter head according to a seventh embodiment of the present invention. Fig. 15 is a schematic view showing the top surface of a mountain-shaped blade ultrasonic bone cutter head according to a seventh embodiment of the present invention. As shown in Fig. 14 and Fig. 15, the mountain-shaped ultrasonic bone cutter head adopts a single main tooth tip structure, and both have small auxiliary teeth, including a blade 41, a cutting edge 42, a connecting thread 43 and a blade body 44.

The tip of the blade is located at the front end of the blade and concentrates the entire energy of the ultrasonic bone knife to the tip end. The center of the tip is located on the longitudinal center axis of the bit, the center of the tip is triangular with the edges of the blade, and two arcuate grooves are provided in the middle of the triangle. Figure 16 is a partial enlarged view of a mountain-shaped blade ultrasonic bone cutter head according to a seventh embodiment of the present invention. As shown in Fig. 16, the angle β between the triangle edge between the center of the blade edge and the edge of the blade and the horizontal line of the center of the blade edge may be 15 to 75 degrees, and is usually 30 to 60 degrees.

Figure 17 is a schematic view showing the structure of a mountain-shaped blade ultrasonic bone cutter head according to an eighth embodiment of the present invention. As shown in FIG. 17, the structure of the mountain-shaped ultrasonic bone cutter head is basically the same as that of the mountain-shaped ultrasonic bone cutter head in the seventh embodiment, except that the thickness of the blade tip is larger than the thickness of the blade, the blade tip and the blade. Transition through an arc.

18 is a schematic structural view of a double arc edge ultrasonic bone cutter head according to a ninth embodiment of the present invention. Figure 19 is a schematic cross-sectional view of a double arc edge ultrasonic bone cutter head according to a ninth embodiment of the present invention. As shown in Figs. 18 and 19, the double arc edge ultrasonic bone cutter head employs a single main tooth tip structure including a blade 51, a tip 52, a connecting thread 53 and a blade 54.

The tip of the blade is located at the front end of the blade and concentrates the entire energy of the ultrasonic bone knife to the tip end. The center of the tip is located on the longitudinal center axis of the tip, and the center of the tip and the edge of the blade are arcuate grooves.

Figure 20 is a partially enlarged view of the double arc edge ultrasonic bone cutter head in the ninth embodiment of the present invention. As shown in Fig. 20, the angle β between the line connecting the two ends of the arc-shaped groove between the center of the blade edge and the edge of the blade and the horizontal line of the center of the blade tip is 15 to 75 degrees, and is usually 30 degrees. To 60 degrees.

The angle between the line connecting the two ends of the arc-shaped groove between the center of the blade tip and the edge of the blade and the horizontal line of the center of the blade tip is 15 degrees to 75 degrees, and is usually 30 degrees to 60 degrees. The angle β and the angle Θ can be combined in any combination.

21 is a schematic structural view of a double-arc blade ultrasonic bone cutter head according to a tenth embodiment of the present invention. As shown in FIG. 21, the structure of the double-arc-edge ultrasonic bone cutter head is basically the same as that of the double-arc-edge ultrasonic bone cutter head in the ninth embodiment, except that the thickness of the cutting edge is larger than the thickness of the blade, the knife The transition between the tip and the blade is through a circular arc.

Fig. 22 is a schematic view showing the structure of a large triangular blade ultrasonic bone cutter head according to a eleventh embodiment of the present invention. Fig. 23 is a schematic side view showing the large triangular blade ultrasonic bone cutter head in the eleventh embodiment of the present invention. As shown in Figures 22 and 23, the large triangular blade ultrasonic bone cutter head employs a single main tooth tip structure including a blade 61, a tip 62, a connecting thread 63 and a blade 64.

The tip of the blade is located at the front end of the blade and concentrates the entire energy of the ultrasonic bone knife to the tip end. The center of the tip is located on the longitudinal center axis of the tip, and the center of the tip is triangular with the edges of the blade.

Figure 24 is a partial enlarged view of the large triangular blade ultrasonic bone cutter head in the eleventh embodiment of the present invention. As shown in Figure 24, the triangular edge between the center of the tip and the edge of the blade extends to the edge of the blade. The angle β between the long lines is 0 to 75 degrees, and is usually 10 to 60 degrees. The angle between the triangle edge between the center of the blade tip and the edge of the blade and the edge extension of the blade edge is 0 to 75 degrees, and is usually 10 to 60 degrees. The angle β and the angle Θ can be combined in any combination, but the angle β and the angle Θ cannot theoretically be 0 degrees at the same time.

Fig. 25 is a schematic view showing the structure of a large triangular blade ultrasonic bone cutter head according to a twelfth embodiment of the present invention. As shown in FIG. 25, the structure of the large triangular blade ultrasonic bone cutter head is basically the same as that of the large triangular edge ultrasonic bone cutter head in the eleventh embodiment, except that the thickness of the cutting edge is larger than the thickness of the blade, the cutting edge Transition through the arc between the blade and the blade.

Figure 26 is a schematic view showing the structure of a wedge-shaped ultrasonic bone cutter head according to a thirteenth embodiment of the present invention. Figure 27 is a schematic cross-sectional view of a wedge-shaped ultrasonic bone cutter head according to a thirteenth embodiment of the present invention. As shown in Figures 26 and 27, the wedge-edged ultrasonic bone cutter head employs a single main tooth tip structure including a blade 71, a tip 72, a connecting thread 73 and a blade 74.

The tip of the blade is located at the front end of the blade and concentrates the entire energy of the ultrasonic bone knife to the tip end. The two sides of the tip are on the same line as the two sides of the blade. One side of the tip is longer than the other side of the tip, and the end of the long side of the tip is an arc from the end of the short side.

Figure 28 is a partial enlarged view of a wedge-shaped ultrasonic bone cutter head according to a thirteenth embodiment of the present invention. As shown in Fig. 28, the angle between the line between the end of the long side of the tool tip and the end of the short side of the tool tip and the long side of the tool tip is 15 to 90 degrees, and is usually 30 to 70 degrees. . One end of the blade is connected to the blade, and one end is connected with the connecting thread. One end of the blade is a thick cylinder, one end is a thin cylinder, the middle is transitioned by a circular arc, and a normal hex wrench position is set, and the connecting thread is connected with the ultrasonic transducer. Connect the connecting thread at the end of the cutter head to a specific ultrasonic transducer and tighten with a corresponding wrench. Then connect the ultrasonic transducer to a specific ultrasonic host to operate.

Figure 29 is a schematic cross-sectional view of a wedge-shaped ultrasonic bone cutter head according to a fourteenth embodiment of the present invention. Figure 30 is a partial enlarged view of the wedge-shaped ultrasonic bone cutter head in the fourteenth embodiment of the present invention. As shown in FIG. 29 and FIG. 30, the wedge-shaped ultrasonic bone cutter head has the same structure as the wedge-shaped edge ultrasonic bone cutter head in the thirteenth embodiment, and the difference is that the end point and the short side of the long side of the cutting edge The end points are straight lines, and the angle between the end of the long edge of the tip and the end of the short side of the tip and the long side of the tip is 15 degrees to 90 degrees, usually 30 degrees to 70 degrees.

Figure 31 is a schematic view showing the structure of a wedge-shaped ultrasonic bone cutter head according to a fifteenth embodiment of the present invention. As shown in FIG. 31, the structure of the wedge-shaped ultrasonic bone cutter head is substantially the same as that of the wedge-shaped ultrasonic bone cutter head in the thirteenth embodiment and the fourteenth embodiment, except that the thickness of the blade tip is larger than that of the blade. Thickness, transition between the tip and the blade through the arc.

Thus, when used, the width of the cutting edge is larger than the thickness of the blade. During the operation, when the thicker bone is cut or the deep groove or the window cut is cut, the clamping phenomenon does not occur. In addition, the large thickness of the tool tip also increases the strength of the tool tip, which increases the service life of the tool tip. The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope of the present invention. All should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

What is claimed is: 1. An ultrasonic bone cutter head, comprising: a blade and a cutting edge, the cutting edge being located at a front end of the blade for collecting the entire energy of the ultrasonic bone knife to the tip portion.

2. An ultrasonic bone cutter bit according to claim 1 wherein the thickness of the cutting edge is greater than the thickness of the blade.

3. An ultrasonic bone cutter bit according to claim 1, wherein the cutting edge is provided with a circular arc shaped groove.

4. An ultrasonic bone cutter bit according to claim 1, wherein the cutting edge is provided with a triangular portion.

The ultrasonic bone cutter head according to any one of claims 1 to 4, further comprising a blade body and a connecting thread, wherein the blade body is connected to the blade at one end, and one end is connected with the connecting thread, and the blade body is thick at one end. The cylinder has a thin cylinder at one end, a circular transition in the middle, and a normal hex wrench position. The connecting thread is used to connect with the ultrasonic transducer.

6. An ultrasonic bone cutter head according to claim 1 or 2, wherein the center of the cutting edge is located on the longitudinal center axis of the cutting head, and the side between the center of the cutting edge and the two edges of the blade is a triangle On the other side is a circular groove.

7. The ultrasonic bone cutter bit according to claim 6, wherein a line connecting the two ends of the circular arc groove between the center of the cutting edge and the edge of the blade and the horizontal line of the center of the cutting edge The angle between the angles is 15 degrees to 75 degrees.

8. The ultrasonic bone cutter bit according to claim 7, wherein a line connecting the two ends of the circular arc groove between the center of the cutting edge and the edge of the blade and the horizontal line of the center of the cutting edge The angle between the angles is 30 degrees to 60 degrees.

9. The ultrasonic bone cutter head according to claim 6, wherein an angle between a triangular edge between the center of the cutting edge and the edge of the blade and a horizontal line of the center of the cutting edge is 0 to 75

10. The ultrasonic bone cutter head according to claim 9, wherein an angle between a triangular edge between the center of the cutting edge and the edge of the blade and a horizontal line of the center of the cutting edge is 30 degrees to 60 degrees. #.

11. An ultrasonic bone cutter head according to claim 1 or 2, wherein the center of the cutting edge is located on the longitudinal central axis of the cutting head, and the center of the cutting edge is triangular between the two edges of the blade. And set a circular groove in the middle of the triangle.

12. The ultrasonic bone cutter head according to claim 11, wherein an angle between a triangular edge between the center of the cutting edge and the edge of the blade and a horizontal line of the center of the cutting edge is 15 degrees to 75 degrees. degree.

13. The ultrasonic bone cutter head according to claim 12, wherein an angle between a triangular edge between the center of the cutting edge and the edge of the blade and a horizontal line of the center of the cutting edge is 30 degrees to 60 degrees. degree.

14. An ultrasonic bone cutter head according to claim 1 or 2, wherein the center of the cutting edge is located on the longitudinal center axis of the cutting head, and the center of the cutting edge is adjacent to the cutting edge between the two edges of the blade The central portion is a triangle, and the edge portion near the blade is a circular arc groove.

15. An ultrasonic bone cutter bit according to claim 14, wherein the angle between the edge of the triangle near the central portion of the tip and the horizontal line of the center of the tip is 15 degrees to 75#.

16. An ultrasonic bone cutter bit according to claim 15, wherein the angle between the edge of the triangle near the central portion of the blade tip and the horizontal line of the center of the blade tip is 30 degrees to 60#.

17. An ultrasonic bone cutter head according to claim 1 or 2, wherein the center of the cutting edge is located on the longitudinal center axis of the cutting head, and the center of the cutting edge is triangular between the two edges of the blade. And set two circular grooves in the middle of the triangle.

18. The ultrasonic bone cutter head according to claim 17, wherein an angle between a triangular edge between the center of the cutting edge and the edge of the blade and a horizontal line of the center of the cutting edge is 15 degrees to 75 degrees. degree.

19. The ultrasonic bone cutter head according to claim 18, wherein an angle between a triangular edge between the center of the cutting edge and the edge of the blade and a horizontal line of the center of the cutting edge is 30 degrees to 60 degrees. degree.

20. An ultrasonic bone cutter head according to claim 1 or 2, wherein the center of the cutting edge is located on the longitudinal center axis of the cutting head, and the center of the cutting edge is rounded between the two edges of the blade. Curved groove.

21 . The ultrasonic bone cutter bit according to claim 20 , wherein a line connecting the two ends of the circular arc groove between the center of the cutting edge and the edge of the blade and the horizontal line of the center of the cutting edge The angle between the angles is 15 degrees to 75 degrees.

The ultrasonic bone cutter head according to claim 21, wherein a line connecting the two ends of the circular arc groove between the center of the cutting edge and the edge of the blade and the horizontal line of the center of the cutting edge The angle between the angles is 30 degrees to 60 degrees.

23. An ultrasonic bone cutter head according to claim 1 or 2, wherein the center of the cutting edge is located on the longitudinal central axis of the cutting head, and the center of the cutting edge is triangular between the two edges of the blade.

24. An ultrasonic bone cutter head according to claim 23, wherein the angle between the triangular edge between the center of the tip and the edge of the blade and the edge extension of the blade edge is between 0 and 75 degrees.

25. An ultrasonic bone cutter bit according to claim 24, wherein the angle between the triangular edge between the center of the tip and the edge of the blade and the edge extension of the blade edge is between 10 and 60 degrees.

26. An ultrasonic bone cutter head according to claim 1 or 2, wherein the two sides of the cutting edge are respectively on the same line as the two sides of the blade, one side of the cutting edge being longer than the other side of the cutting edge.

27. An ultrasonic bone cutter bit according to claim 26, wherein a line between the end of the long side of the tip and the end of the short side is a straight line.

28. An ultrasonic bone cutter bit according to claim 26, wherein the end of the long edge of the tip and the end of the short edge are arcs.

29. An ultrasonic bone cutter head according to claim 26, wherein the angle between the end point of the long side of the cutting edge and the end point of the short side of the cutting edge and the long side of the cutting edge is 15 degrees to 90 degrees.

30. An ultrasonic bone cutter bit according to claim 29, wherein the angle between the end point of the long side of the cutting edge and the end point of the short side of the cutting edge and the long side of the cutting edge is 30 degrees to 70 degrees.