WO2017211210A1

WO2017211210A1 - Ultrasound bone cutting tool

Info

Publication number: WO2017211210A1
Application number: PCT/CN2017/086368
Authority: WO
Inventors: 姜亮; 战松涛; 曹群
Original assignee: 江苏水木天蓬科技有限公司
Priority date: 2016-06-08
Filing date: 2017-05-27
Publication date: 2017-12-14
Also published as: CN205831876U; JP3224960U; BR212018074793U2

Abstract

An ultrasound bone cutting tool, comprising a cutting portion (1) provided at a front end of the ultrasound bone cutting tool, and a shaft (2) connected to the cutting portion (1) and to an ultrasound bone cutter transducer. The cutting portion (1) comprises two blades (3) disposed on two sides of the cutting portion (1), and an upper cutting surface (4) and a lower cutting surface (5) disposed opposite each other and perpendicular to the blade (3). The upper cutting surface (4) and lower cutting surface (5) are provided at an angle to the axis of the ultrasound bone cutting tool. The ultrasound bone cutting tool has a simple structure, is easy to process, can be flexibly operated, and provides a wide range of use. When performing a specific surgery using the ultrasound bone cutting tool, a bent structure of the ultrasound bone cutting tool can help a physician complete an operation that cannot be achieved by means of a straight blade. The invention reduces the length of a surgical wound, reduces surgical risks, and shortens a surgical duration.

Description

Ultrasonic bone cutter head

Technical field

The present invention relates to the field of medical device equipment, and in particular to a scalpel, and more particularly to an ultrasonic bone cutter head.

Background technique

In modern society, with the development of medical technology, orthopedic surgery presents a diversified trend. Accordingly, when performing surgery, it is necessary to use different scalpel heads for different orthopedic conditions to cut, grind and cure the affected area. Clamp and other operations.

In response to the special construction of bone structure, combined with the development of ultrasound technology in recent years, ultrasonic bone knife has gradually become the main tool for modern orthopedic surgery. Ultrasonic osteotome uses high-intensity focused ultrasound to convert electrical energy into mechanical energy through a transducer. After high-frequency ultrasonic vibration, the water in the contacted tissue cells is vaporized, and the protein hydrogen bonds are broken, thereby thoroughly cutting the bone tissue that needs to be cut during surgery. damage. Since the high-intensity focused ultrasound has a destructive effect on bone tissue of a specific hardness and has a characteristic of being hard and not soft, it is particularly suitable for spinal surgery in which the periphery is a bone structure and the soft tissue in the middle is a spinal cord. Surgery with an ultrasonic bone knife can effectively prevent the occurrence of medical accidents in the spinal cord due to excessive force and accidental injury to the spinal cord, thereby improving the safety of the operation.

In orthopedic surgery, the often used ultrasonic scalpel blade is a cutting-based cutter. However, at present, most of these cutter heads are mainly in the shape of a straight sheet, and the direction of the blade edge is the same as the direction of the axis of the ultrasonic bone cutter head, as shown in FIG. The cutting trajectory can only be carried out along the axis of the ultrasonic bone cutter head, and the vertical cutting has a good cutting effect. However, the specific surgical conditions vary widely. For some surgical operations that require lateral cutting, due to the limited operation space, this straight-shaped knife, which is only used for longitudinal cutting, has lost its usefulness.

Summary of the invention

In order to solve the problems of the prior art, the present invention provides an ultrasonic bone cutter head comprising a cutting portion at the front end of the ultrasonic bone cutter head, a cutter rod connected at one end to the cutting portion and the other end connected to the ultrasonic osteotome transducer. The cutting portion includes two cutting edges respectively located at two sides of the cutting portion and an upper cutting surface and a lower cutting surface perpendicular to and opposite to the cutting edge, the upper cutting surface and the lower cutting surface being inclined to the axis of the ultrasonic bone cutter head.

When using the ultrasonic bone cutter head of the present invention for a specific operation, the curved structure of the ultrasonic bone cutter head can help the doctor to bypass the spinal cord for lateral cutting and osteotomy, and can also complete the lateral section of some invisible areas. Bone operation; when the operation space is small, the ultrasonic bone cutter head of the present invention can complete the osteotomy operation instead of the straight shape, thereby reducing the length of the incision of the operation, reducing the risk of surgery and shortening the operation time.

According to the ultrasonic bone cutter head of the present invention, preferably, the upper cutting surface of the cutting portion and the cutter rod adopt a circular arc transition, and a concave arc is formed at the transition portion; the lower cutting surface of the cutting portion and the cutter rod adopt a circular arc transition, and A convex arc is formed at the transition. The circular arc structure is a common design method for mechanical design. The arc transition can avoid stress concentration on the one hand, and can facilitate the processing on the one hand, and more importantly, can effectively prevent the sharp corners of the sharp corner transition from harming the body tissue. .

According to the ultrasonic bone cutter head of the present invention, preferably, the cutting portion is a uniform flat sheet structure in which the upper cut surface is parallel to the lower cut surface. The cutting portion is a flat sheet structure, which occupies less space in space, has more room for maneuvering, and has a wider application range.

According to the ultrasonic bone cutter head of the present invention, preferably, the cutting portion is a graded flat sheet structure which is gradually gathered toward the front end by the rear end of the cutting portion along the upper and lower cut surfaces. The operator can select different shapes of ultrasonic bone cutter heads according to different needs to better complete the operation.

According to the ultrasonic bone cutter head of the present invention, it is preferable that the lower cut surface is provided with a reinforcing rib which protrudes from the outer surface of the reinforcing rib. The rib is a support structure of the cutting portion, which can effectively improve the service life of the ultrasonic bone cutter head. At the same time, since the cut portion is a blade protruding from the rib, the rib does not affect the ultrasonic bone. The cutting effect of the cutter head.

According to the ultrasonic bone cutter head of the present invention, preferably, one of the two cutting edges is provided with a knife Teeth; preferably, the two blades are respectively provided with teeth. The setting of the teeth allows the medical staff to better grip the cutting surface and perform the cutting quickly.

According to the ultrasonic bone cutter head of the present invention, preferably, the end of the cutting portion is a circular arc structure or a planar structure, which can effectively prevent the sharp corner from harming the body tissue.

According to the ultrasonic bone cutter head of the present invention, preferably, a thread is provided at the tail end of the cutter bar. The threaded setting is used to tightly attach the ultrasonic bone cutter head to the ultrasonic bone knife transducer.

Compared with the prior art, the embodiment of the invention has the advantages that the ultrasonic bone cutter head of the invention has the advantages of simple structure, convenient processing, flexible operation and wide application range. When using the ultrasonic bone cutter head of the present invention for a specific operation, the curved structure of the ultrasonic bone cutter head can help the doctor to bypass the spinal cord for lateral cutting and osteotomy, and can also complete the lateral section of some invisible areas. Bone operation; when the operation space is small, the ultrasonic bone cutter head of the present invention can complete the osteotomy operation instead of the straight shape, thereby reducing the length of the incision of the operation, reducing the risk of surgery and shortening the operation time.

DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the specific embodiments or the description of the prior art will be briefly described below, and obviously, the attached in the following description The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

Figure 1 is a perspective view of a first embodiment of an ultrasonic bone cutter head of the present invention;

Figure 2 is a front elevational view showing the first embodiment of the ultrasonic bone cutter head of the present invention;

Figure 3 is a top plan view of a first embodiment of the ultrasonic bone cutter head of the present invention;

4 is a perspective view of a second embodiment of the ultrasonic bone cutter head of the present invention.

Figure 5 is a front elevational view of a prior art straight-shaped ultrasonic bone cutter head;

6A is a schematic view showing a first state when spinal surgery is performed using the ultrasonic bone cutter head of the present invention;

6B is a schematic view showing a second state when performing spinal surgery using the ultrasonic bone cutter head of the present invention;

Fig. 6C is a schematic view showing the state of bone tissue after spinal surgery using the ultrasonic bone cutter head of the present invention.

Reference mark:

1 to cutting section; 2 to shank; 3 to blade; 4 to upper section; 5 to lower section; 6 to inner concave arc; 7 to outer convex arc; 8 to rib;

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.

1 is a perspective view of a first embodiment of an ultrasonic bone cutter head of the present invention, and FIG. 2 is a front elevational view of the first embodiment of the ultrasonic bone cutter head of the present invention. As shown in FIG. 1 and FIG. 2, the ultrasonic bone cutter head of the present invention comprises a cutting portion 1 at the front end of the ultrasonic bone cutter head, and a knife connected at one end to the cutting portion 1 and at the other end to the ultrasonic bone knife transducer. Rod 2. The cutting portion 1 comprises a cutting edge 3 respectively located on both sides of the cutting portion 1 and an upper cutting surface 4 and a lower cutting surface 5 perpendicular to and opposite to the cutting edge 3, the upper cutting surface 4 and the lower cutting surface 5 being inclined to the axis of the ultrasonic bone cutter head.

As shown in FIG. 2, the upper cutting surface 4 of the cutting portion 1 of the ultrasonic bone cutter head of the present invention and the knife bar 2 adopt a circular arc transition, and a concave arc 6 is formed at the transition portion; the lower cutting surface 5 of the cutting portion 1 and the knife The rod 2 adopts a circular arc transition and forms a convex arc 7 at the transition. The circular arc structure is a common design method for mechanical design. On the one hand, the arc transition can avoid stress concentration, and on the other hand, it is easy to process. More importantly, it can effectively prevent the sharp corners of the sharp corners from being damaged to the body tissue. .

In the ultrasonic bone cutter head of the present invention, the cutting portion 1 may also be a uniform flat sheet structure in which the upper cutting surface 4 and the lower cutting surface 5 are parallel. The cutting portion 1 having a flat sheet structure occupies less space in space, has a larger space for swirling, and has a wider application range.

In the ultrasonic bone cutter head of the present invention, the cutting portion 1 may be a graded flat sheet structure which gradually gathers from the rear end of the cutting portion 1 along the generatrices of the upper cut surface 4 and the lower cut surface 5 toward the front end. That is, the cutting portion 1 may be a graded flat sheet structure in which the upper cut surface 4 and the lower cut surface 5 gradually approach from the rear end toward the front end of the cut portion 1. The operator can select different shapes of ultrasonic bone cutter heads according to different needs to better complete the operation.

3 is a top plan view of a first embodiment of an ultrasonic bone cutter head of the present invention. As shown in FIG. 1 and FIG. 3, the ultrasonic bone cutter head of the present invention may be provided with the cutter teeth 9 on the one-side cutting edge 3, or the cutter teeth 9 may be respectively formed on the double-sided cutting edge 3. The teeth 9 are formed by a plurality of grooves spaced apart by a certain distance. The arrangement of the teeth 9 enables the medical staff to better grip the cutting surface and perform the cutting quickly when cutting.

4 is a perspective view of a second embodiment of the ultrasonic bone cutter head of the present invention. In Fig. 4, a rib 8 is provided on the lower section 5 of the ultrasonic bone cutter head, and the blade 3 protrudes from the outer surface of the rib 8. Plus The strong rib 8 is a supporting structure of the cutting portion 1, which can effectively improve the service life of the ultrasonic bone cutter head, and at the same time, since the portion to be cut is the blade edge 3 protruding from the rib 8, the rib 8 Does not affect the cutting effect of the ultrasonic bone cutter head.

In the ultrasonic bone cutter head of the present invention, the end of the cutting portion 1 has a circular arc structure or a planar structure, which can effectively prevent the sharp corner from harming the body tissue.

In the ultrasonic bone cutter head of the present invention, a thread 10 is formed at the trailing end of the cutter bar 2. The ultrasonic bone cutter head is securely attached to the ultrasonic osteotome transducer by threads 10 during surgery.

6A is a schematic view showing a first state when spinal surgery is performed using the ultrasonic bone cutter head of the present invention, and FIG. 6B is a second state diagram when performing spinal surgery using the ultrasonic bone cutter head of the present invention, and FIG. 6C is a schematic view of the present invention. Schematic diagram of the bone tissue state after spinal surgery performed by the ultrasonic bone cutter head. As shown in FIG. 6A to FIG. 6C, when the specific operation is performed by using the ultrasonic bone cutter head of the present invention, the curved structure of the ultrasonic bone cutter head can help the doctor to bypass the spinal cord for lateral cutting and osteotomy, and can also be completed. Transverse osteotomy for certain invisible areas. When the operation space is small, the ultrasonic bone cutter head of the present invention can complete the osteotomy operation instead of the straight shape, thereby reducing the length of the incision of the operation, reducing the risk of surgery and shortening the operation time. This situation is difficult to achieve with the prior art straight-form ultrasonic bone cutter head shown in FIG.

Finally, it should be noted that 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 foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

An ultrasonic bone cutter head comprising a cutting portion at a front end of the ultrasonic bone cutter head, and a cutter rod having one end connected to the cutting portion and the other end connected to the ultrasonic osteotome transducer, wherein

The cutting portion includes two cutting edges respectively located at two sides of the cutting portion and an upper cutting surface and a lower cutting surface perpendicular and opposite to the cutting edge, the upper cutting surface and the lower cutting surface being inclined to the ultrasonic bone cutter The axis of the head.
The ultrasonic bone cutter bit according to claim 1, wherein

The upper cutting surface of the cutting portion and the arbor are arc-transitioned, and a concave arc is formed at the transition.
The ultrasonic bone cutter bit according to claim 1, wherein

The lower cut surface of the cutting portion and the arbor adopt a circular arc transition, and form a convex arc at the transition.
The ultrasonic bone cutter head according to any one of claims 1 to 3, characterized in that

The cutting portion is a flat sheet structure in which the upper cutting surface is parallel to the lower cutting surface.
The ultrasonic bone cutter head according to any one of claims 1 to 3, characterized in that

The cutting portion is a graded flat sheet structure that gradually gathers from the rear end of the cutting portion along the bus bar of the upper cutting surface and the lower cutting surface toward the front end.
The ultrasonic bone cutter head according to any one of claims 1 to 3, characterized in that

The lower cutting surface is provided with a reinforcing rib protruding from the outer surface of the reinforcing rib.
The ultrasonic bone cutter bit according to claim 1, wherein

One of the two cutting edges is provided with a cutter tooth.
The ultrasonic bone cutter bit according to claim 1, wherein

The two cutting edges are respectively provided with teeth.
The ultrasonic bone cutter bit according to claim 1, wherein

The cutting end has a circular arc structure.
The ultrasonic bone cutter bit according to claim 1, wherein

A thread is formed at a tail end of the arbor, and a clamping surface is provided on an outer circumference of the shank.