WO2018228128A1

WO2018228128A1 - Ultrasonic osteotome cutter bit

Info

Publication number: WO2018228128A1
Application number: PCT/CN2018/087471
Authority: WO
Inventors: 梁益建; 曹群; 战松涛
Original assignee: 江苏水木天蓬科技有限公司
Priority date: 2017-06-12
Filing date: 2018-05-18
Publication date: 2018-12-20
Also published as: CN207707972U

Abstract

An ultrasonic osteotome cutter bit, comprising a cutter bit head (1), a cutter bar (2), and a cutter body (3). One end of the cutter bar (2) is connected to the cutter bit head (1), and the other end of the cutter bar (2) is connected to the cutter body (3); the cutter bit head (1) is of a flat sheet structure or of a gradient flat sheet structure formed by gradational transition from the cutter bar (2); the thickness of a front cutting portion of the cutter bit head (1) is greater than the thickness of a rear portion of the cutter bit head (1); and a toothed structure (11) is processed at the cutting portion of the cutter bit head (1). A water guide groove (12) is processed between the adjacent teeth on a single side or two sides of the cutter bit head (1). The ultrasonic osteotome cutter bit can greatly improve the cooling effect to the tip of the cutter bit; flushing fluid can flow onto the tip of the cutter bit at any moment in a cutting process; and negative effects on tissues due to high operating temperature are avoided in the cutting process.

Description

Ultrasonic bone cutter head

Technical field

The invention belongs to the technical field of medical instruments, and in particular relates 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, plan, and Scrape or any other shaping. At present, the blade cutter head of the ultrasonic bone cutter is a cutter head mainly for cutting. In order to increase the cutting speed, the sheet shape of equal thickness is used (as shown in Fig. 1), or from the blade body to the tip of the blade. Thin design, but this design will affect the effect of water injection and cooling. It is difficult to reach the surgical site during the operation. It can not fully cool the cutting surface. The cutting tip is easy to overheat during cutting. Injury to body tissues (such as the spinal cord, nerves, etc.) may cause medical malpractice.

Summary of the invention

In order to solve the above problems in the prior art, the present invention designs an ultrasonic bone cutter head having a cutting portion having a thickness slightly larger than a cutter bar, which helps to guide the flushing liquid to the tip end portion of the cutter head, thereby The effect of effectively controlling the tip temperature of the cutter during the operation is achieved.

In order to solve the above-mentioned technical problems, the present invention provides an ultrasonic bone cutter head including a blade body, a cutter bar, and a cutter head end, the cutter bar being connected to one end of the cutter head at one end, and the cutter bar is further One end is connected to the blade body, wherein the cutter head end portion is a flat plate-like structure of uniform thickness or a gradual thickness flat plate-shaped structure gradually formed by the shank, and the cutting portion of the end portion of the cutter head The thickness is greater than the thickness of the rear end of the tip end of the cutter head, and a toothed structure is provided at the cutting portion.

In the ultrasonic bone cutter head of the present invention, it is preferable that a water guide is formed between adjacent teeth on one side or both sides of the end portion of the cutter head.

In the ultrasonic bone cutter head of the present invention, preferably, the water guiding groove is grooved in the direction of the tooth from the end of the cutter head toward the arbor, and the rear end groove bottom of the water guiding groove is the same as the cutter end The rear plane is uniform.

In the ultrasonic bone cutter head of the present invention, preferably, the front end of the tip end portion is a wedge-shaped or approximately wedge-shaped blade-like structure.

In the ultrasonic bone cutter head of the present invention, preferably, the front end of the tip end portion is a circular arc shape or a spade structure.

In the ultrasonic bone cutter head of the present invention, preferably, the flat sheet-shaped structure of the end portion of the cutter head is bent upward or downward with respect to the cutter bar, so that the cutter head end portion and the cutter bar The longitudinal direction forms an angle.

In the ultrasonic bone cutter head of the present invention, preferably, the cutter bar is bent with respect to the blade body such that the cutter bar forms a certain angle with a longitudinal direction of the blade body.

In the ultrasonic bone cutter head of the present invention, preferably, the cutter bar has a hollow structure, and a water outlet hole is opened at a joint between the end of the cutter head and the cutter bar to directly introduce the flushing liquid into the The end of the cutter head.

In the ultrasonic bone cutter head of the present invention, preferably, a connecting thread is provided at a rear end portion of the blade body, and the connecting thread is an in-line connecting thread or an outer connecting thread.

In the ultrasonic bone cutter head of the present invention, preferably, the cutter body is provided with a clamping portion, and the cutter head end portion and the cutter bar are integrally formed.

The ultrasonic bone cutter head of the invention has the following beneficial effects:

(1) The ultrasonic bone cutter head of the present invention has a simple structure and is easy to process.

(2) The ultrasonic bone cutter head of the present invention can concentrate the energy generated by the ultrasonic transducer at the end of the cutter head (the most effective working part), so that the front end portion of the cutter has the strongest energy output. The strongest work effect.

(3) The curved design of the ultrasonic bone cutter head of the present invention can help the doctor to cut a variety of hard-to-reach parts, shorten the operation time, reduce the surgical operation intensity of the doctor, and improve the safety of the operation.

(4) The ultrasonic bone cutter head of the present invention is a thick toothed cutter head with a water guide at the front end, which can maximize the cooling effect on the tip end of the cutter head, so that the rinse liquid is at any time during the cutting process. Both can reach the tip of the cutter head, avoiding the negative impact on the tissue due to excessive operating temperature during the cutting process, and improving the safety of the operation.

DRAWINGS

1 is a schematic structural view of a prior art sheet-shaped ultrasonic bone cutter head;

2 is a plan view of an ultrasonic bone cutter head according to a first embodiment of the present invention;

3 is a plan view of a tip end of an ultrasonic bone cutter head according to a first embodiment of the present invention;

Figure 4 is a perspective view of the end of the cutter head of the ultrasonic bone cutter head according to the first embodiment of the present invention;

Figure 5 is a plan view of an ultrasonic bone cutter head according to a second embodiment of the present invention;

Fig. 6 is a perspective view of the end portion of the ultrasonic bone cutter head according to the second embodiment of the present invention.

Reference mark:

1 to the end of the cutter head; 2 to the cutter bar; 3 to the blade body; 11 to the tooth structure; 12 to the water guide; 31 to the clamping portion.

detailed description

The technical solutions of the present invention will be described clearly and completely in conjunction with the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all 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.

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.

2 to 4 show an ultrasonic bone cutter head according to a first embodiment of the present invention. 2 is a plan view of an ultrasonic bone cutter head according to a first embodiment of the present invention, and FIG. 3 is a plan view of a cutter head end portion of the ultrasonic bone cutter head according to the first embodiment of the present invention, and FIG. 4 is a first embodiment of the present invention. A perspective view of the end of the tip of the ultrasonic bone cutter head. As shown in FIG. 2, the ultrasonic bone cutter head according to the first embodiment of the present invention includes a cutter head end portion 1, a cutter bar 2 and a blade body 3. One end of the cutter bar 2 is connected to the blade body 3, and the other end of the blade bar 2 and the blade are provided. The head end portion 1 is connected, and the tail end of the blade body 3, that is, the other end of the blade body 3 is connected to a specific ultrasonic host through an ultrasonic transducer.

The tip end portion 1 is a flat sheet-like structure of uniform thickness or a flat-shaped sheet-shaped structure of gradual thickness formed by the gradual transition of the shank 2, and the thickness of the front end cutting portion of the tip end portion 1 is slightly larger than the end portion of the cutter head 1 The thickness of the back end. A toothed structure 11 is machined on the front end cutting portion of the tip end portion 1. A water guiding groove 12 is formed between adjacent teeth on one face of the sheet-shaped structure of the tip end portion 1. It is also possible to open the water guiding groove 12 between the adjacent teeth on both faces of the sheet-shaped structure of the tip end portion 1, and the water guiding groove 12 is directed by the cutting portion of the tip end portion 1 in the direction of the tooth. The direction of the shank is slotted. The rear end bottom of the water guide 12 coincides with the rear plane of the tip end portion 1. The front end of the tip end portion 1 may be a wedge-shaped or approximately wedge-shaped blade-like structure, or a circular arc-shaped structure, or a spade-shaped structure. 2 to 4 show a blade-like structure in which the tip end of the tip end portion 1 is approximately wedge-shaped.

The flat sheet-like structure of the tip end portion 1 can be bent upward or downward with respect to the cutter bar 2 such that the tip end portion 1 is at an angle to the longitudinal direction of the cutter bar 2. Alternatively, the cutter bar 2 may be bent with respect to the blade body 3 such that the tip end portion 1 is at an angle to the longitudinal direction of the blade body 3. In the invention, the bending design of the cutter head can help the doctor to cut a plurality of hard-to-reach parts, shorten the operation time, reduce the surgical operation intensity of the doctor, and improve the safety of the operation.

In the ultrasonic bone cutter head according to the first embodiment of the present invention, the cutter bar 2 may have a hollow structure, and a water hole (not shown) may be formed in a portion of the cutter bar 2 near the tip end portion 1 to flush the liquid. Directly diverting to the cutting portion at the front end of the tip end of the cutter head, the flushing liquid flows along the water guiding groove 12, which helps sufficient flushing liquid to flow to the cutting portion of the tip end of the cutter head, and fully cuts the cutting portion of the cutter head end portion. cool down. During the operation, the entire head and the contacted tissue can be completely in the cleaning and cooling of the perfusate in real time, thereby effectively controlling the temperature of the tip of the tip. As a result, the risk of surgery is further reduced, and the safety and success rate of surgery are improved.

Further, in the ultrasonic bone cutter head according to the first embodiment of the present invention, one end of the holder 2 is connected to the end portion 1 of the cutter head, and the other end of the holder 2 is connected to the blade 3. A smooth transition between the shank 2 and the blade 3 through a bevel or a circular arc surface. The other end of the blade body 3 is provided with a connecting thread, and the connecting thread may be in-line or in-line. A clamping portion 31 is also provided on the blade body 3. In operation, the connecting thread of the tail of the blade 3 is connected to a specific ultrasonic transducer, and is tightened with a corresponding wrench, and then the ultrasonic transducer is connected to a specific ultrasonic host to operate. The ultrasonic bone cutter head of the present invention may be an integrally formed one piece construction.

5 to 6 show an ultrasonic bone cutter head according to a second embodiment of the present invention. 5 is a plan view of an ultrasonic bone cutter head according to a second embodiment of the present invention, and FIG. 6 is a perspective view of the end portion of the ultrasonic bone cutter head according to the second embodiment of the present invention. As shown in FIG. 5 and FIG. 6, the ultrasonic bone cutter head according to the second embodiment of the present invention is basically identical to the ultrasonic bone cutter head of the first embodiment, except that the front end of the cutter head end portion 1 is a semicircular arc. structure. A cut portion is formed on the semicircular arc structure at the front end of the tip end portion 1 and on both sides of the tip end portion 1 that is in contact with the semicircular arc structure. The thickness of the cutting portion is slightly larger than the thickness of the rear portion of the tip end portion 1, and the toothed structure 11 is machined in the cutting portion. A water guide 12 is opened between adjacent teeth on one face of the sheet-like structure of the tip end portion 1. It is also possible to open the water guide 12 between adjacent teeth on both faces of the sheet-like structure of the tip end portion 1, respectively. The water guiding groove 12 is grooved in the direction of the tooth from the end of the cutter head toward the arbor, and the bottom end of the bottom end of the water guiding groove 12 coincides with the rear surface of the tip end portion 1.

The ultrasonic bone cutter head in the second embodiment of the present invention can concentrate the energy generated by the ultrasonic transducer on the end of the cutter head (the most effective working part), so that the front end portion of the cutter has the strongest The energy output achieves the strongest working effect, and the invention is easy to process.

In addition, the present invention provides a blade-shaped cutter head with a water guide at the front end, and the thickness of the cutting portion at the head end of the cutter head is slightly larger than the thickness of the rear portion of the cutter head end, so that the flushing liquid flows to the tip end portion of the cutter head. Thereby achieving the effect of effectively controlling the tip temperature of the cutter during the operation. The ultrasonic bone cutter head of the invention can maximize the cooling effect on the tip end of the cutter head, so that the flushing liquid can flow to the tip end of the cutter head at any time during the cutting process, thereby avoiding the operating temperature being too high during the cutting process. The negative impact on the organization has improved the safety of the operation.

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 blade body, a cutter bar, and a cutter head end, the cutter bar being connected to the cutter head end at one end, and the other end of the cutter bar being connected to the blade body, wherein

The tip end portion is a flat sheet-like structure of uniform thickness or a flat-shaped sheet-shaped structure of gradual thickness formed by the gradual transition of the arbor, and the thickness of the cutting portion of the end portion of the cutter head is larger than the cutter head The thickness of the rear end of the end portion is provided with a toothed structure at the cutting portion.
The ultrasonic bone cutter bit according to claim 1, wherein

A water guide is formed between adjacent teeth on one or both sides of the end of the cutter head.
The ultrasonic bone cutter bit according to claim 2, wherein

The water guiding groove is grooved in the direction of the tooth from the end of the cutter head toward the arbor, and the bottom groove bottom of the water guiding groove is aligned with the rear surface of the cutter head end.
The ultrasonic bone cutter head according to claim 1, 2 or 3, wherein

The front end of the tip end is a wedge-shaped or approximately wedge-shaped blade-like structure.
The ultrasonic bone cutter head according to claim 1, 2 or 3, wherein

The front end of the tip end portion is a circular arc structure or a spade structure.
The ultrasonic bone cutter head according to claim 1, 2 or 3, wherein

The flat sheet-like structure of the end of the cutter head is bent upward or downward with respect to the cutter bar such that the cutter head end portion forms an angle with the longitudinal direction of the cutter bar.
The ultrasonic bone cutter head according to claim 1, 2 or 3, wherein

The shank is laterally bent relative to the blade such that the arbor forms a certain angle with the longitudinal direction of the blade.
The ultrasonic bone cutter head according to claim 1, 2 or 3, wherein

The arbor is a hollow structure, and a water outlet hole is opened at a joint between the end of the cutter head and the arbor to directly direct the rinsing liquid to the end of the cutter head.
The ultrasonic bone cutter head according to claim 1, 2 or 3, wherein

A connecting thread is provided at a rear end portion of the blade body, and the connecting thread is an in-line connecting thread or an external connecting thread.
The ultrasonic bone cutter head according to claim 1, 2 or 3, wherein

A clamping portion is provided on the cutter body, and the cutter head end portion and the cutter bar are integrally formed.