WO2018153249A1

WO2018153249A1 - Ultrasonic scalpel bit

Info

Publication number: WO2018153249A1
Application number: PCT/CN2018/075445
Authority: WO
Inventors: 周一新; 曹群; 战松涛
Original assignee: 江苏水木天蓬科技有限公司
Priority date: 2017-02-21
Filing date: 2018-02-06
Publication date: 2018-08-30
Also published as: KR20190002533U; KR200494036Y1; JP3225095U; DE212018000161U1; CN106691543A

Abstract

An ultrasonic scalpel bit, comprising a scalpel bit end (1), a scalpel rod (2), and a scalpel body (3). One end of the scalpel rod (2) is connected to the scalpel bit end (1), and the other end of the scalpel rod (2) is connected to the scalpel body (3). A body of the scalpel bit end (1) is of a cylindrical structure, and the front end of the scalpel bit end (1) draws back. One or more spiral scalpel blades (11) are provided spirally along the scalpel bit end (1) from the front end of the scalpel bit end (1) to form a cutting portion. Cutting blades (12) of the spiral scalpel blades (11) are of square or sharp blade structures. By means of the spiral design of the scalpel bit end (1), doctors can spirally drill holes gradually inwardly in surgery in need of ultrasonic scalpel drilling, so that a drilling operation is controllable, surgery safety is improved, and operation intensity of the doctors is reduced.

Description

Ultrasonic cutter head

Technical field

The invention belongs to the technical field of medical instruments, and in particular relates to an ultrasonic knife head.

Background technique

In modern society, with the development of medical technology, orthopedic surgery presents a diversified trend. Correspondingly, when performing the operation, it is necessary to use different types of scalpel heads for cutting, grinding, scraping, clamping, and the like for different orthopedic conditions. In surgery, soft tissue, hard tissue, and human-like tissue are often used to perform punching operations. At present, the ultrasonic cutter head used for perforating in the operation is mainly a needle-shaped cutter head and an umbrella-shaped cutter head, and the umbrella-shaped cutter head is shown in FIG. These cutter heads can only punch the tissue by straight puncturing. It requires a large downward pressure during use, is inefficient and difficult to control, and is easy to injure the body and cause medical accidents.

Summary of the invention

In order to solve the above problems, the present invention designs an ultrasonic cutter head which adopts a spiral blade and has a chip evacuation hole, which can quickly, safely and labor-savingly assist the doctor to perform the required punching operation.

In order to solve the above-mentioned technical problems, the present invention provides an ultrasonic cutter head including a cutter head end, a cutter bar and a blade body, one end of the cutter bar being connected to the cutter head end, the cutter bar The other end is coupled to the blade body, wherein the body of the tip end of the cutter head is of a cylindrical structure, the front end of which is gathered, and a single or a plurality of spiral blades start from the foremost end of the end of the cutter head, along the The end of the cutter head is spirally arranged to form a cutting portion.

In the ultrasonic blade head of the present invention, preferably, the front end of the cylindrical structure is a conical tip, and the cone bottom diameter of the conical tip is larger than the diameter of the cylindrical structure, the single or multiple spiral blades Starting from the foremost end of the conical tip, a cutting portion is formed by spirally setting along the conical tip.

In the ultrasonic blade head of the present invention, preferably, the cylindrical structure and the conical tip are smoothly connected by a bevel or a circular arc surface.

In the ultrasonic blade head of the present invention, preferably, the cutting edge of the spiral blade has a square blade or a sharp edge structure.

In the ultrasonic blade head of the present invention, preferably, the cutting portion of the end portion of the cutter head is processed with a plurality of chip evacuation holes or chip flutes, and the plurality of chip flute holes or chip flutes along the cutting portion Weekly uniformity.

In the ultrasonic blade head of the present invention, preferably, the axial center line of the chip evacuation hole or the chip flute is parallel to the axial center line of the tip end portion.

In the ultrasonic cutter head of the present invention, preferably, the cutter bar has a hollow structure, and the hollow portion extends up to the front end of the end portion of the cutter head, and the side of the cylindrical structure or the side of the cut portion at the end portion of the cutter head Or the front end, with a water injection hole.

In the ultrasonic blade head of the present invention, preferably, a smooth transitional connection between the arbor and the blade end between the shank and the blade body is performed by a slope or a circular arc surface.

In the ultrasonic blade head of the present invention, preferably, the other end of the blade body is connected to a specific ultrasonic host through an ultrasonic transducer, and the other end of the blade body is provided with a connecting thread, and the connecting thread is an in-line connecting thread. Or externally connected threads.

In the ultrasonic blade head of the present invention, preferably, the blade body is further provided with a clamping surface.

The ultrasonic cutter head has the following beneficial effects:

(1) The ultrasonic cutter head of the present invention can concentrate the energy generated by the ultrasonic transducer to the front end portion of the cutter head, so that the end portion of the cutter head has the strongest energy output, thereby achieving the strongest working effect.

(2) The spiral design of the tip end of the ultrasonic cutter head of the present invention can help the doctor to gradually advance in a spiral manner in the operation requiring the use of the ultrasonic knife to punch, thereby making the punching operation more controllable and improved. The safety of the surgery reduces the intensity of the doctor's operation.

(3) In the ultrasonic cutter head of the present invention, the spiral design of the end of the cutter head can take advantage of both the quick screwing in and the increase of the holding force. When the plant in the bone is taken out, the ultrasonic knife can be directly used without using other tools. take out.

(4) The ultrasonic blade head of the present invention adds a chip flute or a chip evacuation hole, so that the debris at the time of punching can be discharged from the chip flute or the chip discharge hole, thereby reducing the resistance of the bit in the punching.

(5) The ultrasonic cutter head of the present invention has a hollow structure, and a water injection hole is arranged at the end of the cutter head to ensure that the perfusate flows out from the end of the cutter head, which helps to cool the spiral contact surface when the spiral blade is cut. This will further reduce the risk of surgery and improve the safety and success rate of surgery.

DRAWINGS

1 is a schematic structural view of a mushroom-shaped ultrasonic blade head for punching in the prior art;

2 is a perspective view of an ultrasonic blade head according to a first embodiment of the present invention;

Figure 3 is a front elevational view of the end of the bit of the ultrasonic blade head of the first embodiment of the present invention;

4 is a perspective view of an ultrasonic blade head according to a second embodiment of the present invention;

Figure 5 is a front elevational view of an ultrasonic blade head according to a second embodiment of the present invention;

Figure 6 is a right side elevational view of the end of the ultrasonic head of Figure 5;

Figure 7 is a front elevational view of the end portion of the ultrasonic blade head of the third embodiment of the present invention;

Figure 8 is a right side elevational view of the end of the ultrasonic head of Figure 7;

Figure 9 is a front elevational view of the end portion of the ultrasonic blade head of the fourth embodiment of the present invention with a chip evacuation hole;

Figure 10 is a right side elevational view of the end of the cutter head of Figure 9.

In the picture:

1—end of the cutter head; 11—spiral blade; 12—cutting edge; 13—chip hole or chip flute; 14—water injection hole; 2—tool bar; 3—blade; 31—connecting thread; Hold the face.

detailed description

The technical solutions of the present invention will be clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the description of the present invention, it is to be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. The orientation or positional relationship of the indications is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, rather than indicating or implying that the device or component referred to has a specific orientation, in a specific orientation. The construction and operation are therefore not to be construed as limiting the invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that the terms "installation", "connected", and "connected" are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; can be mechanical or electrical; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of the two components. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

2 to 3 show an ultrasonic blade head of a first embodiment of the present invention. 2 is a perspective view of an ultrasonic blade head according to an embodiment of the present invention, and FIG. 3 is a front view of the end portion of the cutter head of FIG. As shown in FIG. 2 to FIG. 3, the ultrasonic blade head of the present invention comprises a cutter head end 1, a cutter bar 2 and a blade body 3. One end of the cutter bar 2 is connected to the tip end portion 1, and the other end of the cutter bar 2 is The blade body 3 is connected, and the blade body 3 is connected to a specific ultrasound host through an ultrasonic transducer.

The body of the tip end portion 1 has a cylindrical structure, and the foremost end of the cylindrical structure is gathered. A single or a plurality of spiral blades 11 are arranged from the foremost end (tip) of the tip end portion 1 and spirally disposed along the tip end portion 1 to form a spiral cut portion. The cutting edge 12 of the spiral blade 11 has a square blade or a sharp edge structure. In the first embodiment of the present invention, the end portion 1 of the cutter head adopts a single spiral blade 11, and after being screwed in one direction and inserted into the operation portion, the operated tissue or tissue can be grasped by the spiral blade to complete the subsequent pulling. Wait for the operation. When the spiral blade is taken out, it can be taken out in the reverse spiral.

The shank 2 has a hollow structure, and the hollow portion extends all the way to the front end of the tip end portion 1. A small hole is formed in the side surface of the cylindrical structure of the tip end portion 1 or the side of the cutting portion as the water injection hole 14, which helps to cool the spiral contact surface when the spiral blade is cut. The hollow portion may also extend directly to the foremost end of the tip end portion 1, and a water injection hole 14 is formed at the foremost end of the tip end portion 1, as shown in FIG.

One end of the cutter bar 2 is connected to the tip end portion 1, and the other end of the cutter bar 2 is connected to the blade body 3. Between the shank 2 and the tip end 1, the shank 2 and the blade 3 are smoothly connected by a bevel or a circular arc. A clamping surface 33 is further disposed on the connecting end of the blade body 3 and the blade 2, and the other end of the blade body 3 is further provided with a connecting thread, and the connecting thread is an in-line connecting thread or an external connecting thread, which is in the embodiment Externally connected thread. In operation, the connecting thread of the blade 3 can be connected to a specific ultrasonic transducer and tightened with a corresponding wrench, and then the ultrasonic transducer can be connected to a specific ultrasonic host to operate.

4 to 6 show an ultrasonic blade head according to a second embodiment of the present invention. 4 is a perspective view of an ultrasonic blade head according to a second embodiment of the present invention, FIG. 5 is a front view of the end of the cutter head of FIG. 4, and FIG. 6 is a right end of the cutter head of the ultrasonic cutter head of FIG. view. As shown in FIG. 4 and FIG. 5, the main body of the cutter head end portion 1 has a cylindrical structure, the front end of the cylindrical structure is a conical tip end, and the cylindrical structure and the cone bottom of the conical tip are smoothly connected by a slope or a circular arc surface. And the cone bottom diameter of the conical tip is larger than the diameter of the cylindrical structure. A single or a plurality of spiral blades 11 are formed from the foremost end of the tip end portion 1 and spirally disposed along the conical tip end of the tip end portion 1 to form a cutting portion. In the present embodiment, two spiral blades 11 are employed. The shank 2 has a hollow structure, and the hollow portion extends all the way to the front end of the tip end portion 1. A small hole is formed in the side of the cylindrical structure of the tip end portion 1 or the side of the cutting portion as the water injection hole 14. In the present embodiment, the water injection hole 14 is provided at the side of the cylindrical structure of the tip end portion 1.

In this embodiment, a conical tip is used, the length and the sharpness of the cutting portion are lengthened, and two spiral blades 11 are adopted, which can take advantage of the quick screwing in and increase the holding force, and can be taken when removing the bone plant. Use an ultrasonic knife to remove directly without the aid of other tools.

7 to 8 show a tip end of the ultrasonic blade head of the third embodiment of the present invention with a chip evacuation hole. Fig. 7 is a front elevational view of the end portion of the ultrasonic blade head of the third embodiment of the present invention with a chip evacuation hole, and Fig. 8 is a right side view of the tip end portion of the ultrasonic blade head of Fig. 7. As shown in FIG. 7 and FIG. 8, the ultrasonic blade head according to the third embodiment of the present invention is similar to the ultrasonic blade head of the first embodiment and the second embodiment of the present invention, and the body of the tip end portion 1 has a cylindrical structure. The front end of the cylindrical structure is a conical tip, and the cylindrical structure and the cone bottom of the conical tip are smoothly connected by a slope or a circular arc surface, and the diameter of the cone bottom of the conical tip is larger than the diameter of the cylindrical structure. A single or a plurality of spiral blades 11 are formed from the foremost end of the tip end portion 1 and spirally disposed along the conical tip end of the tip end portion 1 to form a cut portion. Compared with the first embodiment and the second embodiment of the present invention, the ultrasonic blade head according to the third embodiment of the present invention is different in that a plurality of through holes are formed in the cutting portion of the tip end portion 1 as the chip discharge. The hole 13, the plurality of chip evacuation holes 13 are circumferentially distributed around the axial center line of the cutting portion, and the axial center line of the chip discharging hole 13 is parallel to the axial center line of the tip end portion 1.

9 and 10 show an ultrasonic blade head according to a fourth embodiment of the present invention. Fig. 9 is a front elevational view of the end portion of the ultrasonic blade head of the fourth embodiment of the present invention with a chip evacuation hole, and Fig. 10 is a right side view of the tip end portion of the ultrasonic blade head of Fig. 9. As shown in FIG. 9 and FIG. 10, the ultrasonic blade head according to the fourth embodiment of the present invention is similar to the ultrasonic blade head of the first embodiment and the second embodiment of the present invention, and the body of the tip end portion 1 has a cylindrical structure. The front end of the cylindrical structure is a conical tip, and the cylindrical structure and the cone bottom of the conical tip are smoothly connected by a slope or a circular arc surface, and the diameter of the cone bottom of the conical tip is larger than the diameter of the cylindrical structure. A single or a plurality of spiral blades 11 are formed from the foremost end of the tip end portion 1 and spirally disposed along the conical tip end of the tip end portion 1 to form a cut portion. Compared with the first and second embodiments of the present invention, the ultrasonic blade head according to the fourth embodiment of the present invention is different in that a plurality of chip flutes 13 are formed in the cutting portion of the tip end portion 1, and a plurality of The chip flutes 13 are evenly distributed along the outer circumference of the cutting portion, and the axial center line of the flutes 13 is parallel to the axial center line of the tip end portion 1. Of course, the axial center line of the chip flute 13 and the axial center line of the tip end portion 1 may not be completely parallel and have an angle of an angle, and the technical effect of the present invention can also be achieved.

Further, in the ultrasonic blade head according to the present invention, the drilling is the main function for the spiral ultrasonic blade head, but the ultrasonic blade head also has the function of external scraping and cutting. That is, the outward scraping operation is performed by the outwardly facing reverse edge of the spiral rear portion. Particularly in the third embodiment and the fourth embodiment of the present invention, the outward scraping operation can be realized by the rear end of the disk.

The ultrasonic cutter head of the invention can concentrate all the energy generated by the ultrasonic transducer on the front end portion of the knife, so that the front end portion of the cutter has the strongest energy output to achieve the strongest working effect. In addition, the spiral design of the end of the cutter head can help the doctor to gradually advance in a spiral manner in the operation requiring the use of the ultrasonic knife to punch the hole, thereby making the punching operation more controllable, improving the safety of the operation and reducing the doctor. Operating intensity. In the ultrasonic cutter head of the present invention, the spiral design of the end of the cutter head can also take advantage of the quick screwing in and the increase of the holding force. When the bone plant is taken out, the ultrasonic blade can be directly taken out without using other tools.

In addition, in the present invention, the chip flute or the chip removing hole is added, so that the debris at the time of punching can be discharged from the chip flute or the chip removing hole, and the resistance of the bit in the punching is reduced. In addition, since the ultrasonic cutter head has a hollow structure, a water injection hole is arranged at the end of the cutter head, which ensures that the perfusion liquid flows out from the end of the cutter head, which helps to cool the spiral contact surface when the spiral blade is cut, so that The risk of surgery is further reduced, and the safety and success rate of surgery are improved.

The above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the above are modified, or the equivalents of some or all of the technical features are replaced, and the modifications or substitutions do not deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

An ultrasonic cutter head comprising a cutter head end, a cutter bar and a blade body, wherein one end of the cutter bar is coupled to the cutter head end, and the other end of the cutter bar is coupled to the blade body, wherein

The main body of the end portion of the cutter head is a cylindrical structure, the front end of which is gathered, and a single or a plurality of spiral blades are spirally arranged along the end of the cutter head from the foremost end of the cutter head to form a cutting portion. .
The ultrasonic blade head according to claim 1, wherein

The front end of the cylindrical structure is a conical tip, and the conical tip has a cone bottom diameter that is larger than the diameter of the cylindrical structure.
The ultrasonic blade head according to claim 2, wherein

The cylindrical structure and the conical tip are smoothly connected by a bevel or a circular arc.
The ultrasonic blade head according to claim 1, 2 or 3, wherein

The cutting edge of the spiral blade has a square blade or a sharp edge structure.
The ultrasonic blade head according to claim 1, 2 or 3, wherein

The cutting portion of the end portion of the cutter head is machined with a plurality of chip evacuation holes or chip flutes, and the plurality of chip evacuation holes or chip flutes are evenly distributed along the circumference of the cutting portion.
The ultrasonic blade head according to claim 5, wherein

The axial centerline of the chip evacuation or chip flute is substantially parallel to the axial centerline of the tip end.
The ultrasonic blade head according to claim 1, 2, 3 or 6, wherein

The arbor is a hollow structure, and the hollow structure extends to the front end of the end of the cutter head, and a water injection hole is opened at a side of the cylindrical structure of the cutter head or a side or a front end of the cutting portion.
The ultrasonic blade head according to claim 1, 2, 3 or 6, wherein

A smooth transition between the arbor and the end of the tip, between the shank and the blade by a bevel or arcuate surface.
The ultrasonic blade head according to claim 1, 2, 3 or 6, wherein

The other end of the blade is connected to a specific ultrasonic host by an ultrasonic transducer, and a connecting thread is provided at the other end of the blade, and the connecting thread is an in-line connecting thread or an external connecting thread.
The ultrasonic blade head according to claim 1, 2, 3 or 6, wherein

A clamping surface is also provided on the knife body.