WO2013007116A1

WO2013007116A1 - Ultrasonic osteotome head

Info

Publication number: WO2013007116A1
Application number: PCT/CN2012/072759
Authority: WO
Inventors: 曹群
Original assignee: 北京水木天蓬医疗技术有限公司
Priority date: 2011-07-13
Filing date: 2012-03-21
Publication date: 2013-01-17

Abstract

An ultrasonic osteotome head comprises a blade (11, 21, 31, 41, 51, 61, 71) and a knife point (12, 22, 32, 42, 52, 62, 72). An included angle (δ) is presented between the longitudinal central axis of the blade (11, 21, 31, 41, 51, 61, 71) and the longitudinal central axis of the knife point (12, 22, 32, 42, 52, 62, 72), a knife edge (13, 23, 33, 43, 53, 63, 73) is disposed at the front end of the knife point (12, 22, 32, 42, 52, 62, 72), and the center of the knife edge (13, 23, 33, 43, 53, 63, 73) is located on the longitudinal central axis of the knife point (12, 22, 32, 42, 52, 62, 72). The use of the head enables the visual field of a surgery to be wide and clear, and enables the surgery to be operated conveniently, and because the head is provided with a strong loading capability, the cutting speed can be improved, and the cutting quantity and the shape of a bone can be precisely controlled.

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 The object of the present invention is to provide an ultrasonic bone cutter head which has a wide and clear surgical field, is easy to operate, has a strong load capacity, improves cutting speed, and can 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 comprising a blade and a cutting edge, wherein a longitudinal central axis of the blade presents an angle with a longitudinal central axis of the cutting edge, a front end of the cutting edge is provided with a cutting edge, and a center of the cutting edge is located in a longitudinal direction of the cutting edge The central axis.

The angle between the longitudinal center axis of the blade and the longitudinal center axis of the tip is between 0 and 90 degrees.

Preferably, the angle between the longitudinal center axis of the blade and the longitudinal center axis of the tip is between 10 and 70 degrees.

The thickness of the tip is greater than the thickness of the blade. The blade is provided with a circular arc groove shape.

The blade is provided with a triangular shape.

The utility model also 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 transition in the middle, and a hex wrench position, and the connecting thread is used for the ultrasonic wave. Transducer connection.

Further, one side of the edge between the blade edge and the edge of the blade is a triangle, and the other side is a circular groove.

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

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

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

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

Further, the blade is a small triangle.

The outer edge of the blade tip near the blade is a straight line or an arc.

Further, the tip is a large triangle.

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

Preferably, the angle between the line connecting the center of the tip and the edge of the cutting edge and the extension of the edge of the cutting edge is 10 to 60 degrees.

Further, the center of the blade and the edges of the blade are both triangular, and a circular groove is provided in the middle portion of the triangle.

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

Further, the center portion of the blade edge and the edge of the blade edge are triangular near the center of the blade edge, and the edge portion near the blade edge is a circular arc groove.

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

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

Further, the center of the blade and the edges of the blade are both triangular, and two arcuate grooves are provided in the middle portion of the triangle.

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

Further, a circular arc-shaped groove is formed between the center of the blade and the two edges of the blade edge.

Preferably, an angle between a line connecting the ends of the circular arc-shaped groove between the center of the blade and the edge of the blade edge and a horizontal line of the center of the blade is 30 to 60 degrees. The technical solution of the invention adopts the technical solution with stronger load capacity, high bone cutting efficiency and high speed, reduces the operation time, reduces the patient's pain and reduces the labor intensity of the doctor; and the surgical field of view is more open and clear due to the certain curvature of the cutting edge It is more convenient to use; the cutter head is exquisite and compact, which can accurately control the cutting amount and shape of the bone, reduce the amount of bone loss during operation, and accelerate the recovery time of the patient; It has a hemostatic coagulation effect, which reduces the amount of intraoperative blood loss; reduces the processing difficulty and reduces the production cost:

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

2 is a schematic view showing the structure of a single arc blade ultrasonic bone cutter according to a first embodiment of the present invention. Figure 3 is a specific embodiment of the present invention; single-arc blade ultrasonic bone knife:

Figure 4 is a specific embodiment of the present invention; a single arc-blade ultrasonic bone knife:: a partial enlargement of: 5 is a partially enlarged structure 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 medium knife edge ultrasonic bone knife: :. Figure 7 is a specific embodiment of the present invention: .

Figure 8 is a specific embodiment of the present invention: . Partially enlarged blade of the knife-shaped blade ultrasonic knife: :: Fig. 9 is a side view showing the blade-shaped ultrasonic bone cutter head in the fourth embodiment of the present invention. Figure 10 is a partial enlarged structure of the knife-shaped blade ultrasonic bone cutter head in the fifth embodiment of the present invention;

: Figure.

Figure 11 is a schematic view showing the structure of the large triangular blade ultrasonic bone cutter head in the sixth embodiment of the present invention. Figure 12 is a side view of the invention in a sixth embodiment of the large triangular blade ultrasonic bone cutter head. Figure 13 is a partial enlarged view of the large triangular blade ultrasonic bone cutter head of the sixth embodiment of the present invention; Figure 14 is a specific enlarged view of the present invention;

: Figure.

Figure 15 is a schematic view showing the structure of the scalpel blade ultrasonic bone cutter head according to the eighth embodiment of the present invention. Figure 16 is a side view of the eighth embodiment of the scalloped blade ultrasonic bone cutter head. Figure 17 is a partial enlarged view of the scalloped blade ultrasonic bone cutter head of the eighth embodiment of the present invention; Figure 18 is a specific embodiment of the present invention; Figure 19 is a schematic view showing the structure of a triangular-bladed ultrasonic bone cutter head according to the present invention; Figure 20 is a side elevational view of the present invention; Figure 21 is a partial enlarged view of the triangular-blade ultrasonic bone cutter head of the tenth embodiment of the present invention; Figure 22 is a specific embodiment of the present invention; a partial enlarged structure of the triangular-blade ultrasonic bone cutter head of the eleventh embodiment: .

Figure 23 is a schematic view showing the structure of the 12th Zhongshan-shaped ultrasonic bone cutter head; Figure 24 is a side view of the present invention; Figure 25 is a partial enlarged view of the twelfth Zhongshan shape ultrasonic bone cutter head; Fig. 26 is a specific embodiment of the present invention;

Figure.

Figure 27 is a specific embodiment of the present invention;

Figure 28 is a specific embodiment of the present invention;

Figure 29 is a specific embodiment of the present invention; Figure 30 is a specific 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 the structural shape of the ultrasonic bone cutter head.

2 is a schematic structural view of a single arc edge ultrasonic bone cutter head according to a first embodiment of the present invention. image 3 It is a schematic side view of a single arc edge ultrasonic bone cutter head according to a first embodiment of the present invention. 4 is a partially enlarged schematic view showing a single arc edge ultrasonic bone cutter head according to a first embodiment of the present invention. As shown in Figures 2, 3 and 4, the single arc edge ultrasonic bone cutter head employs a single main tooth tip asymmetric structure including a blade 11, a tip 12, a blade 14 and a connecting thread 15.

The longitudinal center axis of the blade and the longitudinal center axis of the cutting edge exhibit an angle δ, the angle δ is 0 degrees to 90 degrees, and the common range is 10 degrees to 70 degrees. The cutting edge naturally forms an inclined angle with the entire tool. Therefore, a tilt angle is naturally formed between the cut portion and the cutter during use, and the effect of the elbow cutter is achieved, thereby expanding the surgical field of view and making it easier to operate the ultrasonic bone cutter.

The edge between the center of the blade and the edge of the blade is triangular, and the other side is a circular groove. Between the center of the arc and the edge of the edge of the blade and the horizontal line between the center of the blade The angle β ranges from 15 degrees to 75 degrees, usually 30 degrees to 60 degrees; the angle between the triangle edge between the center of the blade and the edge of the edge and the horizontal line of the center of the blade ranges from 0 to 75. Degree, usually 30 degrees to 60 degrees; angle β and angle Θ can be combined in any combination.

A cutting edge 13 is provided at the front end of the cutting edge, and the center of the cutting edge is located at the longitudinal center axis of the cutting edge. This structure concentrates all the energy generated by the ultrasonic transducer on the cutting edge portion of the ultrasonic bone cutter head (the most effective working part) ), converging to a point, so that the blade edge of the cutter head has the strongest energy output to achieve the strongest working effect.

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 used for connecting with the ultrasonic transducer. Connect the connecting thread at the end of the cutter head to a specific ultrasonic transducer and tighten with the appropriate wrench. Then connect the ultrasonic transducer to a specific ultrasound host to operate.

FIG. 5 is a partially enlarged 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 a of the blade tip is larger than the thickness of the blade b. , the transition between the tool tip and the blade through the arc R. 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 incision 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.

6 is a schematic structural view of a knife-shaped blade ultrasonic bone cutter head according to a third embodiment of the present invention. Fig. 7 is a side view showing the blade-shaped ultrasonic bone cutter head in the third embodiment of the present invention. Fig. 8 is a partially enlarged schematic view showing the blade-shaped ultrasonic bone cutter head of the third embodiment of the present invention. As shown in Fig. 6, Fig. 7, and Fig. 8, the knife edge ultrasonic bone cutter head adopts a single main tooth structure including a blade 21, a knife tip 22, a blade body 24, and a connecting thread 25.

The longitudinal center axis of the blade and the longitudinal center axis of the cutting edge exhibit an angle β, the angle β is 0 degrees to 90 degrees, and the common range is 10 degrees to 70 degrees. The cutting edge naturally forms an inclined angle with the entire tool. Therefore, a tilt angle is naturally formed between the cut portion and the cutter during use, and the effect of the elbow cutter is achieved, thereby expanding the surgical field of view and making it easier to operate the ultrasonic bone cutter.

A cutting edge 23 is arranged at the front end of the cutting edge. The center of the cutting edge is located at the longitudinal center axis of the cutting edge, and the cutting edge is a small triangle. Similar to the cutting edge, the outer edge of the blade edge near the blade is curved. This structure will be an ultrasonic transducer. The energy generated is concentrated in the blade portion (the most effective working part) of the ultrasonic bone cutter head, and is concentrated into one point, so that the blade portion of the cutter head has the strongest energy output to achieve the strongest working effect.

Fig. 9 is a side view showing the blade-shaped ultrasonic bone cutter head in the fourth embodiment of the present invention. As shown in FIG. 9, the structure of the knife-edge ultrasonic bone cutter head is basically the same as that of the knife-edge edge ultrasonic bone cutter head in the third embodiment, except that the outer edge of the portion 26 of the blade edge near the blade is straight line.

Fig. 10 is a partially enlarged schematic view showing the blade-shaped ultrasonic bone cutter head according to the fifth embodiment of the present invention. As shown in FIG. 10, the structure of the knife-edge ultrasonic bone cutter head and the specific embodiment three and four The structure of the scalpel blade ultrasonic bone cutter head is basically the same, except that the thickness a of the blade tip is larger than the thickness b of the blade, and the blade edge and the blade pass through the arc R.

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.

11 is a schematic structural view of a large triangular blade ultrasonic bone cutter head according to a sixth embodiment of the present invention. Fig. 12 is a side view showing the large triangular blade ultrasonic bone cutter head according to a sixth embodiment of the present invention. Fig. 13 is a partially enlarged schematic view showing the large triangular blade ultrasonic bone cutter head according to the sixth embodiment of the present invention. As shown in Figures 11, 12 and 13, the large triangular blade ultrasonic bone cutter head employs a single main tooth structure including a blade 31, a cutting edge 32, a blade body 34 and a connecting thread 35.

The tip is a large triangle, and the angle β between the center of the tip and the edge of the edge of the blade and the extension of the edge of the blade is in the range of 0 to 75 degrees, usually 10 to 60 degrees; The angle Θ between the connecting line on the other edge of the cutting edge and the extension line of the edge of the cutting edge ranges from 0 to 75 degrees, usually from 10 to 60 degrees; the angle β and the angle Θ can be combined in any combination, the angle β and Angle Θ theoretically cannot be used at 0 degrees at the same time.

A cutting edge 33 is provided at the front end of the cutting edge, and the center of the cutting edge is located at the longitudinal center axis of the cutting edge. This structure concentrates the energy generated by the ultrasonic transducer on the cutting edge portion of the ultrasonic bone cutter head (the most effective working part) ), converging to a point, so that the blade edge of the cutter head has the strongest energy output to achieve the strongest working effect.

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 hex wrench is provided, and the connecting thread is used for ultrasonic exchange. Energy connector connection. The connecting thread at the end of the cutter head is connected to a specific ultrasonic transducer and tightened with a corresponding wrench, and the ultrasonic transducer is connected to a specific ultrasonic host to operate.

Fig. 14 is a partially enlarged schematic view showing the large triangular blade ultrasonic bone cutter head according to a seventh embodiment of the present invention. As shown in FIG. 14, the structure of the large triangular blade ultrasonic bone cutter head is basically the same as that of the large triangular blade ultrasonic bone cutter head in the sixth embodiment, except that the thickness a of the blade tip is larger than the thickness b of the blade, the knife The transition between the tip and the blade is through an arc R.

Figure 15 is a schematic view showing the structure of a serrated edge ultrasonic bone cutter head according to an eighth embodiment of the present invention. Figure 16 is a side elevational view of a serrated edge ultrasonic bone cutter head according to an eighth embodiment of the present invention. Fig. 17 is a partially enlarged schematic view showing the ultrasonic blade cutter head of the humeral blade in the eighth embodiment of the present invention. As shown in Figs. 15, 16, and 17, the split-blade ultrasonic bone cutter head employs a single main tooth structure including a blade 41, a cutting edge 42, a blade 44, and a connecting thread 45.

There is a triangle between the center of the blade and the two edges of the blade tip, and a circular groove is arranged in the middle of the triangle, and the angle between the edge of the blade and the edge of the edge of the blade edge and the horizontal line of the center of the blade edge The range of β is between 15 and 75 degrees, usually 30 to 60 degrees; the angle between the edge of the blade and the edge of the other edge of the blade and the horizontal line of the center of the blade is in the range of 0 to 75 degrees. , usually used from 30 degrees to 60 degrees; angle β and angle Θ can be combined in any combination.

A cutting edge 43 is provided at the front end of the cutting edge, and the center of the cutting edge is located at the longitudinal center axis of the cutting edge. This structure concentrates the energy generated by the ultrasonic transducer on the cutting edge portion of the ultrasonic bone cutter head (the most effective The working part), gathered into a point, so that the blade part of the cutter head has the strongest energy output to achieve the strongest working effect.

Fig. 18 is a partially enlarged schematic view showing the cleavage edge ultrasonic bone cutter head in the ninth embodiment of the present invention. As shown in FIG. 18, the structure of the serrated edge ultrasonic bone cutter head is basically the same as that of the serpentine edge ultrasonic bone cutter head in the eighth embodiment, except that the thickness a of the blade tip is larger than the thickness b of the blade, the knife The transition between the tip and the blade is through an arc R.

Figure 19 is a schematic view showing the structure of a triangular-blade ultrasonic bone cutter head according to a tenth embodiment of the present invention. Figure 20 is a side elevational view of a triangular-blade ultrasonic bone cutter head of a tenth embodiment of the present invention. Fig. 21 is a partially enlarged schematic view showing the ten-blade ultrasonic blade cutter of the tenth embodiment of the present invention. As shown in Figures 19, 20 and 21, the triangular blade ultrasonic bone cutter head employs a single main tooth structure including a blade 51, a cutting edge 52, a blade body 54 and a connecting thread 55.

The center of the blade edge and the edge of the blade edge are triangular near the center of the blade edge, and the edge portion near the blade edge is a circular arc groove, and the angle between the edge of the triangle near the center of the blade edge and the horizontal line of the center of the blade edge is β. Range from 15 degrees to 75 degrees, usually 30 degrees to 60 degrees; close to the blade The angle Θ between the other side of the triangle of the heart portion and the horizontal line of the center of the blade ranges from 0 to 75 degrees, and is usually 30 to 60 degrees; the angle β and the angle Θ can be combined in any combination.

A cutting edge 53 is provided at the front end of the cutting edge, and the center of the cutting edge is located at the longitudinal center axis of the cutting edge. This structure concentrates the energy generated by the ultrasonic transducer on the cutting edge portion of the ultrasonic bone cutter head (the most effective working part) ), converging to a point, so that the blade edge of the cutter head has the strongest energy output to achieve the strongest working effect.

Fig. 22 is a partially enlarged schematic view showing the triangular-blade ultrasonic bone cutter head of the eleventh embodiment of the present invention. As shown in FIG. 22, 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 tenth embodiment, except that the thickness a of the cutting edge is larger than the thickness b of the blade, the cutting edge and The blades pass through an arc R transition.

Figure 23 is a schematic view showing the structure of the 12th Zhongshan-shaped ultrasonic bone cutter head according to a specific embodiment of the present invention. Figure 24 is a side elevational view of the 12th Zhongshan-shaped blade ultrasonic bone cutter head according to a specific embodiment of the present invention. Fig. 25 is a partially enlarged schematic view showing the 12th Zhongshan-shaped ultrasonic bone cutter head according to a specific embodiment of the present invention. As shown in Figures 23, 24 and 25, the mountain-shaped ultrasonic bone cutter head employs a single main tooth structure including a blade 61, a knife tip 62, a blade body 64 and a connecting thread 65.

The longitudinal center axis of the blade and the longitudinal center axis of the cutting edge exhibit an angle δ, the angle δ is 0 degrees to 90 degrees, and the common range is 10 degrees to 70 degrees. The cutting edge naturally forms an inclined angle with the entire tool. So that when used, the angle between the cut and the tool will naturally form an angle of inclination, reaching the bend The effect of the head knife, thus expanding the surgical field of view, making it easier to operate the ultrasonic bone knife.

There is a triangle between the center of the blade and the two edges of the blade tip, and two arcuate grooves are provided in the middle portion of the triangle, between the edge of the triangle between the center of the blade and the edge of the blade edge and the horizontal line of the center of the blade edge. The angle β ranges from 15 degrees to 75 degrees, usually 30 degrees to 60 degrees; the angle between the other side of the triangle between the center of the blade and the edge of the edge and the horizontal line of the center of the blade is in the range of 0 degrees to 0 degrees. 75 degrees, usually 30 degrees to 60 degrees; angle β and angle Θ can be combined in any combination.

A cutting edge 63 is provided at the front end of the cutting edge, and the center of the cutting edge is located at the longitudinal center axis of the cutting edge. This structure concentrates the energy generated by the ultrasonic transducer on the cutting edge portion of the ultrasonic bone cutter head (the most effective working part) ), converging to a point, so that the blade edge of the cutter head has the strongest energy output to achieve the strongest working effect.

Fig. 26 is a partially enlarged schematic view showing the thirteenth-shaped ultrasonic blade cutter head of the thirteenth embodiment of the present invention. As shown in FIG. 26, 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 twelfth embodiment, except that the thickness a of the cutting edge is larger than the thickness b of the blade, the cutting edge Transition through the arc R between the blade and the blade.

Figure 27 is a schematic view showing the structure of a double arc edge ultrasonic bone cutter head according to a fourteenth embodiment of the present invention. Figure 28 is a side elevational view of the double arc edge ultrasonic bone cutter head of the fourteenth embodiment of the present invention. Figure 29 is a partially enlarged schematic view showing the double arc edge ultrasonic bone cutter head in the fourteenth embodiment of the present invention. As shown in Fig. 27, Fig. 28 and Fig. 29, the double arc edge ultrasonic bone cutter head adopts a single main tooth structure, including a knife. Sheet 71, nose 72, blade 74 and connecting thread 75.

Between the center of the cutting edge and the two edges of the cutting edge, there is a circular arc groove, and the angle between the line connecting the two ends of the circular arc groove between the center of the cutting edge and the edge of the cutting edge and the horizontal line of the center of the cutting edge β The range is from 15 degrees to 75 degrees, usually 30 degrees to 60 degrees; the angle between the end of the arc-shaped groove between the center of the blade and the other edge of the blade edge and the horizontal line of the center of the blade Θ The range is from 0 to 75 degrees, usually from 30 to 60 degrees; the angle β and angle Θ can be combined in any combination.

A cutting edge 73 is provided at the front end of the cutting edge, and the center of the cutting edge is located at the longitudinal center axis of the cutting edge. This structure concentrates the energy generated by the ultrasonic transducer on the cutting edge portion of the ultrasonic bone cutter head (the most effective working part) ), converging to a point, so that the blade edge of the cutter head has the strongest energy output to achieve the strongest working effect.

Figure 30 is a partially enlarged schematic view showing the double arc edge ultrasonic bone cutter head of the fifteenth embodiment of the present invention. As shown in FIG. 30, 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 fourteenth embodiment, except that the thickness a of the blade tip is larger than the thickness of the blade. b, the transition between the tool tip and the blade through the arc R.

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 incision 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

Claim

What is claimed is: 1. An ultrasonic bone cutter head, comprising: a blade and a cutting edge, wherein an angle between a longitudinal central axis of the blade and a longitudinal central axis of the cutting edge is present, and a front end of the cutting edge is provided with a cutting edge, the cutting edge of the cutting edge The center is located on the longitudinal center axis of the tip.

2. An ultrasonic bone cutter head according to claim 1 wherein the angle between the longitudinal center axis of the blade and the longitudinal center axis of the tip is between 0 and 90 degrees.

3. An ultrasonic bone cutter head according to claim 1 wherein the angle between the longitudinal center axis of the blade and the longitudinal center axis of the tip is between 10 and 70 degrees.

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

5. An ultrasonic bone cutter bit according to claim 1, wherein said blade is provided with a circular arc-shaped groove shape.

6. An ultrasonic bone cutter bit according to claim 1, wherein said blade is provided in a triangular shape.

The ultrasonic bone cutter head according to any one of claims 1 to 6, 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.

8. An ultrasonic bone cutter head according to any one of claims 1 to 4, wherein one side between the center of the cutting edge and the edge of the cutting edge is a triangle, and the other side is a circular arc concave groove.

9. The ultrasonic bone cutter bit according to claim 8, wherein a line connecting the two ends of the circular arc groove between the center of the cutting edge and the edge of the cutting edge and the horizontal line of the center of the cutting edge The angle is between 15 and 75 degrees.

10. An ultrasonic bone cutter bit according to claim 9, wherein said cutting edge The angle between the line connecting the ends of the circular arc groove between the heart and the edge of the blade and the horizontal line at the center of the blade is 30 to 60 degrees.

11. An ultrasonic bone cutter bit according to claim 8, wherein an angle between a triangular edge between the center of the cutting edge and the edge of the cutting edge and a horizontal line at the center of the cutting edge is 0 to 75 degrees. .

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 cutting edge and a horizontal line of the center of the cutting edge is 30 to 60 degrees. .

13. An ultrasonic bone cutter head according to any one of claims 1 to 4 wherein the cutting edge is a small triangle.

14. An ultrasonic bone cutter bit according to claim 13 wherein the outer edge of the blade tip adjacent the blade is a straight line or an arc.

An ultrasonic bone cutter head according to any one of claims 1 to 4, wherein the cutting edge is a large triangle.

16. An ultrasonic bone cutter bit according to claim 15, wherein the angle between the line connecting the center of the tip and the edge of the cutting edge and the extension of the edge of the cutting edge is between 0 and 75 degrees.

17. An ultrasonic bone cutter head according to claim 16, wherein the angle between the line connecting the center of the tip and the edge of the cutting edge and the extension of the edge of the cutting edge is 10 to 60 degrees.

18. An ultrasonic bone cutter head according to any one of claims 1 to 4, wherein the center of the cutting edge is triangular between the edges of the cutting edge and is disposed in the middle of the triangle. Circular groove.

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 cutting edge and a horizontal line of the center of the cutting edge is 15 to 75 degrees. .

20. An ultrasonic bone cutter bit according to claim 19, wherein said cutting edge The angle between the triangle edge between the center and the edge of the tool tip and the horizontal line at the center of the blade is 30 degrees to

60 degrees.

An ultrasonic bone cutter head according to any one of claims 1 to 4, wherein the center of the blade edge and the edge of the blade edge are triangular near the edge of the blade edge, near the edge of the blade edge. Part is a circular groove.

22. An ultrasonic bone cutter bit according to claim 21, wherein the angle between the edge of the triangle near the central portion of the blade and the horizontal line of the center of the blade is 15 to 75 degrees.

23. An ultrasonic bone cutter bit according to claim 22, wherein the angle between the edge of the triangle near the central portion of the blade and the horizontal line of the center of the blade is 30 to 60 degrees.

24. An ultrasonic bone cutter head according to any one of claims 1 to 4, wherein the center of the cutting edge is triangular between the edges of the cutting edge and is disposed in the middle of the triangle. Two circular grooves.

The ultrasonic bone cutter head according to claim 24, wherein an angle between a triangular edge between the center of the cutting edge and the edge of the cutting edge and a horizontal line of the center of the cutting edge is 15 to 75 degrees. .

26. An ultrasonic bone cutter bit according to claim 25, wherein an angle between a triangular edge between the center of the blade and the edge of the cutting edge and a horizontal line at the center of the cutting edge is 30 to 60 degrees. .

An ultrasonic bone cutter head according to any one of claims 1 to 4, wherein a circular arc-shaped recess is formed between the center of the cutting edge and the edges of the cutting edge.

The ultrasonic bone cutter head according to claim 27, wherein a line connecting the two ends of the circular arc groove between the center of the cutting edge and the edge of the cutting edge and the horizontal line of the center of the cutting edge The angle is between 15 and 75 degrees.

The ultrasonic bone cutter head according to claim 28, wherein a line connecting the two ends of the circular arc groove between the center of the cutting edge and the edge of the cutting edge and the horizontal line of the center of the cutting edge The angle is 30 degrees to 60 degrees.